Acrylamide(AA)is a harmful substance widely found in infant and child biscuits;however,the health hazards of AA,especially endogenous AA,in the biscuit matrix is poorly understood.This study aimed to determine the eff...Acrylamide(AA)is a harmful substance widely found in infant and child biscuits;however,the health hazards of AA,especially endogenous AA,in the biscuit matrix is poorly understood.This study aimed to determine the effects of endogenous(0.11 mg/(kg bw·day))and exogenous(1.31,5.23,and 10.13 mg/(kg bw·day))AA exposure from biscuit diet on the hematology,hormone levels,immune function,and liver and kidney damage in growing female rat pups.For the hematological indices,a quadratic reduction was observed in percentage of neutrophils(Neu%)and percentage of eosinophils(Eos%)in the leukograms and in mean corpuscular hemoglobin concentration and platelet in the erythrograms in all the AA-exposed groups.In terms of hormones,extremely remarkably elevations in estradiol(E_(2))and growth hormone(GH)levels were associated with exogenous AA,and a significant increase in GH levels was noted in the endogenous AA group.Regarding immune function,endogenous and exogenous AA showed a dose-dependent immunotoxic effect on lysozyme(LYSO),nitric oxide(NO),immunoglobulin(Ig)G,and IgM.In particular,the lactate dehydrogenase(LDH)activity was significantly high in the exogenous medium dose(Exo-M)and exogenous high dose(Exo-H)groups,and the percentage of CD3^(+)T cells in the blood and CD8^(+)expression levels in the spleen were significantly elevated in the Exo-H group.For liver and kidney function,exogenous AA had a dose-dependent effect on alanine aminotransferases(ALT),aspartate transferases(AST),alkaline phosphatase(ALP),urea nitrogen(UREA),and creatinine(CREA-S).In addition to the dose-dependent effect on the pathological changes in the liver and kidneys,the endogenous AA group presented with hepatocellular steatosis,kidney inflammatory infiltrates,and glomerular and tubular atrophy.Overall,our findings suggested the dose-dependent harmful effect of endogenous and exogenous AA.Special attention should be paid to the damage caused by exposure to endogenous AA.Stringent AA intake guidelines and measures are required to minimize AA levels in the food matrix.展开更多
Acrylamide is classified as a Class 2A carcinogen and mainly metabolized to produce hepatotoxicity.Phosphatidylcholine is thought to protect the liver from damage,but the protective role of phosphatidylcholine on acry...Acrylamide is classified as a Class 2A carcinogen and mainly metabolized to produce hepatotoxicity.Phosphatidylcholine is thought to protect the liver from damage,but the protective role of phosphatidylcholine on acrylamide-exposed metabolic disorders remains unclear.We investigated protective effect of phosphatidylcholine on the hepatic metabolism in rats exposed to acrylamide using metabolomics and molecular biology approaches.Overall,32 endogenous effect biomarkers and 4 exposure biomarkers were identified as differential signature metabolites responsible for acrylamide exposure and phosphatidylcholine protection.Acrylamide exposure interferes with glutathione metabolism by consuming antioxidant glutathione,cysteine and L-ascorbic acid,and disrupts lipid and carbohydrate metabolism through reducing carnitine content and increasing lipid peroxidation.The phosphatidylcholine treatment reduces the expression of cytochrome P4502E1,alleviates the oxidative stress and inflammation of the liver,and stabilizes the content of glutathione,and thus alleviates the disorder of glutathione.Meanwhile,phosphatidylcholine shifted acrylamide-induced phosphatidylcholine into lysophosphatidylcholine to storage from lysophosphatidylcholine to diacylglycerol,thereby maintaining metabolic homeostasis of glycerophospholipid.The results suggested that phosphatidylcholine supplementation alleviate the disorder of glutathione and lipid metabolism caused by acrylamide exposure,but not significantly change the levels of mercapturic acid adducts of acrylamide,providing the evidence for phosphatidylcholine protection against acrylamide-induced liver injury.展开更多
Acrylamide(AA)is a neurotoxin and carcinogen that formed during the thermal food processing.Conventional quantification techniques are difficult to realize on-site detection of AA.Herein,a flower-like bimetallic FeCu ...Acrylamide(AA)is a neurotoxin and carcinogen that formed during the thermal food processing.Conventional quantification techniques are difficult to realize on-site detection of AA.Herein,a flower-like bimetallic FeCu nanozyme(FeCuzyme)sensor and portable platform were developed for naked-eye and on-site detection of AA.The FeCuzyme was successfully prepared and exhibited flower-like structure with 3D catalytic centers.Fe/Cu atoms were considered as active center and ligand frameworks were used as cofactor,resulting in collaborative substrate-binding features and remarkably peroxidase-like activity.During the catalytic process,the 3,3′,5,5′-tetrame-thylbenzidine(TMB)oxidation can be quenched by glutathione(GSH),and then restored after thiolene Michael addition reaction between GSH and AA.Given the“on–off–on”effect for TMB oxidation and high PODlike activity,FeCuzyme sensor exhibited a wide linear relationship from 0.50 to 18.00μM(R^(2)=0.9987)and high sensitivity(LOD=0.2360μM)with high stability.The practical application of FeCuzyme sensor was successfully validated by HPLC method.Furthermore,a FeCuzyme portable platform was designed with smartphone/laptop,and which can be used for naked-eye and on-site quantitative determination of AA in real food samples.This research provides a way for rational design of a novel nanozyme-based sensing platform for AA detection.展开更多
Aqueous zinc metal batteries(ZMBs)are vital to potable electronics and electric energy infrastructures because of their high energy conversion efficiency,high energy density,and environmental friendliness.However,ramp...Aqueous zinc metal batteries(ZMBs)are vital to potable electronics and electric energy infrastructures because of their high energy conversion efficiency,high energy density,and environmental friendliness.However,rampant zinc dendrite growth and side reactions on the Zn anode seriously impede the practical application of ZMBs.In this work,morpholine-crosslinked polyacrylamide hydrogel electrolytes(ploy(acrylamide),6m-PAM)are successfully developed to simultaneously regulate solvation shell to suppress side reactions and homogenize Zn^(2+)ion migration for dendrite-free ZMBs.Notably,the 6m-PAM electrolyte exhibits excellent mechanical strength of 50.6 kPa,high Zn^(2+)ion conductivity of 52 mS cm^(-1)at room temperature,and fast self-healing ability,providing stable and adaptable electrolyte-anode interfaces.Experimental and theoretical calculation results reveal that Zn^(2+)-N(morpholine)coordination interaction effectively reshapes the primary solvation shell of Zn^(2+),suppressing the activity of free water and Zn dendrites.As a result,the 6m-PAM electrolyte endows symmetric zinc cells with a long-term cycling life of 2000 h at 7.5 mA cm^(-2).Notably,Zn/Polyaniline(PANI)batteries equipped with 6m-PAM electrolytes also exhibit a high capacity of 124 mA h g^(-1)at 1 A g^(-1)and a long cycling life of 4000 times with a high-capacity retention of 98.3%,This functional crosslinked hydrogel electrolyte paves a new way to construct durable dendrite-free ZMBs.展开更多
Hydrogel-based tissue-engineered skin has attracted increased attention due to its potential to restore the structural integrity and functionality of skin.However,the mechanical properties of hydrogel scaffolds and na...Hydrogel-based tissue-engineered skin has attracted increased attention due to its potential to restore the structural integrity and functionality of skin.However,the mechanical properties of hydrogel scaffolds and natural skin are substantially different.Here,we developed a polyvinyl alcohol(PVA)/acrylamide based interpenetrating network(IPN)hydrogel that was surface modified with polydopamine(PDA)and termed Dopa-gel.The Dopa-gel exhibited mechanical properties similar to native skin tissue and a superior ability to modulate paracrine functions.Furthermore,a tough scaffold with tensile resistance was fabricated using this hydrogel by three-dimensional printing.The results showed that the interpenetration of PVA,alginate,and polyacrylamide networks notably enhanced the mechanical properties of the hydrogel.Surface modification with PDA endowed the hydrogels with increased secretion of immunomodulatory and proangiogenic factors.In an in vivo model,Dopa-gel treatment accelerated wound closure,increased vascularization,and promoted a shift in macrophages from a proinflammatory M1 phenotype to a prohealing and anti-inflammatory M2 phenotype within the wound area.Mechanistically,the focal adhesion kinase(FAK)/extracellular signal-related kinase(ERK)signaling pathway may mediate the promotion of skin defect healing by increasing paracrine secretion via the Dopa-gel.Additionally,proangiogenic factors can be induced through Rho-associated kinase-2(ROCK-2)/vascular endothelial growth factor(VEGF)-mediated paracrine secretion under tensile stress conditions.Taken together,these findings suggest that the multifunctional Dopa-gel,which has good mechanical properties similar to those of native skin tissue and enhanced immunomodulatory and angiogenic properties,is a promising scaffold for skin tissue regeneration.展开更多
Quercetin compounds have antioxidant,anti-inflammatory and anticancer pharmacological functions.Longterm exposure to acrylamide(AA)can cause liver injury and endanger human health.However,whether quercetin compounds c...Quercetin compounds have antioxidant,anti-inflammatory and anticancer pharmacological functions.Longterm exposure to acrylamide(AA)can cause liver injury and endanger human health.However,whether quercetin compounds can attenuate AA-induced liver injury and the specific mechanism are not clear.Here,we studied the mechanism and structure-activity relationship of quercetin compounds in reducing AA-induced hepatotoxicity in vivo and in vitro.In vivo studies found that quercetin-like compounds protect against AAinduced liver injury by reducing oxidative stress levels,activating the Akt/m TOR signaling pathway to attenuate autophagy,and improving mitochondrial apoptosis and endoplasmic reticulum stress-mediated apoptosis.In vitro studies found that quercetin compounds protected Hep G2 cells from AA by attenuating the activation of AA-induced autophagy,lowering reactive oxygen species(ROS)levels by exerting antioxidant effects and thus attenuating oxidative stress,increasing mitochondrial membrane potential(MMP),and improving apoptosis-related proteins,thus attenuating AA-induced apoptosis.Furthermore,the conformational differences between quercetin compounds correlated with their protective capacity against AA-induced hepatotoxicity,with quercetin showing the best protective capacity due to its strongest antioxidant activity.In conclusion,quercetin compounds can protect against AA-induced liver injury through multiple pathways of oxidative stress,autophagy and apoptosis,and their protective capacity correlates with antioxidant activity.展开更多
Our previous study has revealed that procyanidin A_(1)(A_(1))and its simulated digestive product(D-A,)can alleviate acrylamide(ACR)-induced intestine cell damage.However,the underlying mechanism remains unknown.In thi...Our previous study has revealed that procyanidin A_(1)(A_(1))and its simulated digestive product(D-A,)can alleviate acrylamide(ACR)-induced intestine cell damage.However,the underlying mechanism remains unknown.In this study,we elucidated the molecular mechanism for and D-A_(1) to alleviate ACR-stimulated IPEC-J2 cell damage.ACR slightly activated nuclear factor erythroid 2-related factor 2(Nrf2)signaling and its target genes,but this activation could not reduce intestine cell damage.A_(1) and D-A_(1) could alleviate ACR-induced cell damage,but the effect was abrogated in cells transiently transfected with Nrf2 small interfering RNA(siRNA).Further investigation confirmed that A_(1) and D-A_(1) interacted with Ketch-like ECH-associated protein 1(Keapl),which boosted the stabilization of Nrf2,subsequently promoted the translocation of Nrf2 into the nucleus,and further increased the expression of antioxidant proteins,thereby inhibiting glutathione(GSH)consumption,maintaining redox balance and eventually alleviating ACR-induced cell damage.Importantly,there was no difference between A_(1) and D-A_(1) treated groups,indicating that A_(1) can tolerate gastrointestinal digestion and may be a potential compound to limit the toxicity of ACR.展开更多
Objective:To evaluate the protective effects of probiotic microorganisms on the reproductive and nervous systems of male rats treated with acrylamide.Methods:Thirty-two rats were randomly divided into 4 groups and rec...Objective:To evaluate the protective effects of probiotic microorganisms on the reproductive and nervous systems of male rats treated with acrylamide.Methods:Thirty-two rats were randomly divided into 4 groups and received normal saline through gavage(control),acrylamide 20 mg/kg body weight,acrylamide plus probiotic microorganisms(Lactobacillus acidophilus,Lactobacillus casei,Lactobacillus bulgaricus,Lactobacillus rhamnosus,Bifidobacterium breve,Bifidobacterium infantis,Streptococcus thermophilus and fructooligosaccharides,all mixed in sachets)20 or 200 mg/kg body weight,respectively.After 30 days,the testis,prostate,seminal vesicle and cerebellum were removed,fixed and stained with hematoxylin-eosin(H&E).The Johnsen score was used to classify spermatogenesis.Cavalieri's principle method was used to evaluate the total volume(in mm3)of the testes.The number of each intratubular cell type as well as intertubular Leydig cells in whole samples was measured using the physical dissector counting techniques.Stereological analysis and the grids were used to determine the volume of cerebellar layers as well as the Purkinje cell number.Results:The testis weight decreased significantly in the acrylamide-treated group compared to the other groups(P<0.001).The number of spermatogonia,spermatocytes,spermatids and Leydig cells in the acrylamide-treated group were significantly less compared to the control group(P<0.05),while they were increased significantly in the acrylamide+200 mg/kg probiotic group(P<0.05;P<0.01).The mean Johnsen score in the acrylamide-treated group was lower than in the control group(P<0.001).Acrylamide-induced changes including congestion,vacuolization in the secretory epithelial cells,and epithelial rupture were observed in the prostate and seminal vesicle.The volumes of cerebellar layers were decreased in the acrylamide group compared to the control group while recovered in both probiotic treated groups.Conclusions:Probiotic microorganisms alleviate acrylamide-induced toxicities against the reproductive and cerebellar tissues in rats.展开更多
This study was carried out to prepare ZnO nanoparticles incorporated acrylamide grafted chitosan composite film for possible biomedical application especially drug loading in wound healing. ZnO nanoparticles were prep...This study was carried out to prepare ZnO nanoparticles incorporated acrylamide grafted chitosan composite film for possible biomedical application especially drug loading in wound healing. ZnO nanoparticles were prepared by co-precipitation method from zinc acetate di-hydrate and incorporated in acrylamide grafted chitosan. FT-IR and TGA of the prepared composite film confirmed the successful incorporation of ZnO nanoparticles in the acrylamide-grafted polymer matrix. SEM images showed that the ZnO nanoparticles were homogeneously distributed on the porous matrix of the composite film. Water uptake and buffer uptake analysis revealed that the composite film could hold water and buffer sufficiently, which facilitated the absorption of exudate from the wound site. Amoxicillin was loaded in the prepared composite film and the maximum loading efficiency was found to be 67.33% with drug concentration of 300 ppm. In vitro studies showed greater antimicrobial activity of drug-loaded composite film compared to both pure film and standard antibiotic disc. Finally, the In vivo mouse model showed maximum healing efficiency compared to conventional gauge bandages because the loading of antibiotic in the film produced a synergistic effect and healing time was reduced.展开更多
Grafting of acrylic acid (AAc) and acrylamide (AAm) onto preirradiated PP film was performed in aqueous solution of AAc and AAm, respectively. Electron beam accelerator was used as irradiation source. The effect of f...Grafting of acrylic acid (AAc) and acrylamide (AAm) onto preirradiated PP film was performed in aqueous solution of AAc and AAm, respectively. Electron beam accelerator was used as irradiation source. The effect of ferrous sulfate, sodium nitrate, methanol and glucose on the degree of grafting was demonstrated. The function of the different additives was compared by the grafting of different monomers (AAc and AAm). The results show that the four of these additives are elective on the grafting of AAc. Only two of these additives, ferrous sulfate and methanol were effective on the grafting of AAm.展开更多
Linear copolymers from N-isopropylacrylamide （NIPA）, acrylic acid （AA） and diacetone acrylamide （DAA） have been prepared. The effect of composition, ionic strength and pH on their lower critical solution tempera...Linear copolymers from N-isopropylacrylamide （NIPA）, acrylic acid （AA） and diacetone acrylamide （DAA） have been prepared. The effect of composition, ionic strength and pH on their lower critical solution temperature （LCST） has been investigated.展开更多
Objective To determine residual acrylamide in medical polyacrylamide hydrogel by high performance liquid chromatography tandem mass spectroscopy （HPLC-MS）. Methods After 13C3 labeled acrylamide was added, the sample...Objective To determine residual acrylamide in medical polyacrylamide hydrogel by high performance liquid chromatography tandem mass spectroscopy （HPLC-MS）. Methods After 13C3 labeled acrylamide was added, the sample was extracted with water and then cleaned up with ExtrelutTM 20. The polyacrylamide hydrogel sample and 20 clinical cases were analyzed by HPLC-MS/MS and isotope dilution quantifying technique in selected reaction monitoring （SRM） mode. Results Acrylamide was separated from polyacrylamide hydrogel. The concentration of acrylamide in polyacrylamide hydrogel ranged from 3.9×10^-9 to 3.1×10^- 8g/L in the 20 clinical cases. The peak area was favorable linear and the range was up to 3 000 μg/L. The recovery rate was 103.1% with a relative standard deviation （RSD） of 6.20%, when the mark level was 50 lag/L. Conelusion HPLC-MS is a rapid, accurate, and sensitive method for the determination of residual acrylamide in medical polyacrylamide hydrogel.展开更多
We report simple acrylamide polymerization process to prepare nanocrystalline tin dioxide(SnO_2) particles.A small amount of the so-called premix solution(monofunctional acrylamide and difunctional N,N'-methyleneb...We report simple acrylamide polymerization process to prepare nanocrystalline tin dioxide(SnO_2) particles.A small amount of the so-called premix solution(monofunctional acrylamide and difunctional N,N'-methylenebisacrylamide) was mixed with the aqueous solution of Sn^(4+) in certain proportion,and a few drops of ammonium persulfate solution were added as initiator.When homogenized by magnetic stirring and heated to about 70℃,the mixed solution became a gel.This hydrous gel was directly decomposed by thermal treatment,resulting in obtaining rutile crystalline SnO_2 particles with a narrow size distribution typically in the range of 20 nm～40 nm.展开更多
Chitosan, as a kind of natural polymer, has many advantages, such as abundant sources, biological degradation, no secondary contamination and facile modification. In this work, we prepared modified chitosan flocculant...Chitosan, as a kind of natural polymer, has many advantages, such as abundant sources, biological degradation, no secondary contamination and facile modification. In this work, we prepared modified chitosan flocculants with double electrical behavior via polymerizing chitosan, acrylamide and sodium carboxymethyl cellulose together by using ammonium persulfate as the indicator in water. The product is a comb-type of chitosan copolymer and a polymeric ampholyte. And then we studied the product by FTIR, UV-Vis, TG, DSC spectrometeries and viscometry, etc. We also performed CACM′s water treat experiment. The effects of pH values, reaction time and dose of the new floccalant on treating various of waste water have been investigated, too.展开更多
Objective To assess the current status of the acrylamide in the Chinese food supply, the dietary acrylamide exposure in the Chinese population and to estimate the public health risks of the current consumption. Method...Objective To assess the current status of the acrylamide in the Chinese food supply, the dietary acrylamide exposure in the Chinese population and to estimate the public health risks of the current consumption. Methods The acrylamide content in the total diet study （TDS） food samples was analyzed using an LC-MS/MS method. Based on the analytical results, the dietary exposure calculations were performed using a deterministic method, combining mean acrylamide concentrations from the food group composite with their associated food consumptions. Results Acrylamide was detected in 43.7% of all samples collected and acrylamide concentration varied from ND to 526.6 I^g/kg. The estimated dietary intakes of acrylamide among Chinese general population given as the mean and the 95th percentile （P95） were 0.286 and 0.490 iJg.kg1 bw.day1, respectively. The margins of exposure （MOEs） for the population calculated using both benchmark dose lower confidence limit for a 10% extra risk of tumors in animals （BMDL10） 0.31 and 0.18 i^g.k8-1 bw-dayz, were 1069 and 621 for the mean dietary exposure, and 633 and 367 for the high dietary exposure respectively. Conclusion These MOE values might indicate a human health concern on acrylamide for Chinese population. Efforts should continue to reduce acrylamide levels in food in order to reduce the dietary risks to the human health.展开更多
A widespread use of acrylamide, probably a neurotoxicant and carcinogen, in various industrial processes has led to environmental contamination. Fortunately, some microorganisms are able to derive energy from acrylami...A widespread use of acrylamide, probably a neurotoxicant and carcinogen, in various industrial processes has led to environmental contamination. Fortunately, some microorganisms are able to derive energy from acrylamide. In the present work, we reported the isolation and characterization of a novel acrylamide-degrading bacterium from domestic wastewater in Chonburi, Thailand. The strain grew well in the presence of acrylamide as 0.5% （W/V）, at pH 6.0 to 9,0 and 25℃. Identification based on biochemical characteristics and 16S rRNA gene sequence identified the strain as Enterobacter aerogenes. Degradation of acrylamide to acrylic acid started in the late logarithmic growth phase as a biomass-dependent pattern. Specificity of cell-free supernatant towards amides completely degraded butyramide and urea and 86% of lactamide. Moderate degradation took place in other amides with that by formanaide 〉 benzamide 〉 acetamide 〉 cyanoacetamide 〉 propionamide. No degradation was detected in the reactions of N,N-methylene bisacrylamide, sodium azide, thioacetamide, and iodoacetamide. These results highlighted the potential of this bacterium in the cleanup of acrylamide/amide in the environment.展开更多
Previous studies show that chronic acrylamide exposure leads to central and peripheral neu- ropathy. However, the underlying mechanisms remained unclear. In this study, we examined the permeability of the blood-cerebr...Previous studies show that chronic acrylamide exposure leads to central and peripheral neu- ropathy. However, the underlying mechanisms remained unclear. In this study, we examined the permeability of the blood-cerebrospinal fluid barrier, and its ability to secrete transthyretin and transport leptin of rats exposed to acrylamide for 7, 14, 21 or 28 days. Transthyretin levels in cerebrospinal fluid began to decline on day 7 after acrylamide exposure. The sodium fluorescein level in cerebrospinal fluid was increased on day 14 after exposure. Evans blue concentration in cerebrospinal fluid was increased and the cerebrospinal fluid/serum leptin ratio was decreased on days 21 and 28 after exposure. In comparison, the cerebrospinal fluid/serum albumin ratio was increased on day 28 after exposure. Our findings show that acrylamide exposure damages the blood-cerebrospinal fluid barrier and impairs secretory and transport functions. These changes may underlie acrylamide-induced neurotoxicity.展开更多
Swelling property of acrylamide hydrogels,prepared from aqueous solutions of acrylamide monomer havingconcentrations in the range of 10-60 wt% by ray irradiation method using a Co-60 gamma radiation source at dosesran...Swelling property of acrylamide hydrogels,prepared from aqueous solutions of acrylamide monomer havingconcentrations in the range of 10-60 wt% by ray irradiation method using a Co-60 gamma radiation source at dosesranging 1-30.0 kGy,has been investigated under various swelling media.These swelling media were basically solvents(solutions),produced by dissolving methanol,ethanol,glucose,sucrose,sodium chloride and sodium persulfate individuallywith distilled water,and solutions prepared with pHs=3,7 and 10.The investigation was performed in order to observe theeffect of these solvents and pHs as well as the influence of monomer concentrations,radiation doses and times on swellingbehavior of hydrogels.Swelling values were found higher for hydrogels prepared with lower monomer concentrations(ca.20 wt%)and radiation doses(ca.5 kGy)and showed a leveling off tendency within 24 h.The glucose solvent and the buffersolution of pH=10 revealed significant increase of swelling of hydrogels as compared to other solutions.Results areexplained based on crosslinking density in hydrogel,polymer-solvent/polymer-polymer interactions in solutions,permeability of molecules in solutions and ionization capacity of hydrogel in pH.展开更多
Objective To investigate the immunotoxicity of acrylamide （ACR） in female BALB/c mice.Methods A total of 200 female mice weighing 18-22 g were randomly divided into four clusters based on body weight, and each weigh...Objective To investigate the immunotoxicity of acrylamide （ACR） in female BALB/c mice.Methods A total of 200 female mice weighing 18-22 g were randomly divided into four clusters based on body weight, and each weight-based cluster included five groups （10 mice per group）： negative control, positive control （cyclophosphamide）, low, intermediate, and high dose ACR groups, and all the groups were administered ACR by gavage for 30 days. At the end of the study, the immunotoxicological effects of the ACR were evaluated through immunopathology, humoral immunity, cellular immunity, and non-specific immunity. Results The terminal body weight, spleen and thymus weights, lymphocyte counts in the ACR-H group were decreased, pathological changes were observed in lymph glands, thymus and spleen. %T cells in blood lymphocytes were significantly increased in all ACR-treated groups, and a significant reduction of % natural killer（NK） cells and increase of %Th cells were observed in the ACR-H group. interleukin-6（IL-6）, Concanavalin A（ConA）-induced splenocyte proliferation and serum half hemolysis value （HCso） were also significantly suppressed in the ACR-H group. Conclusion ACR elicited an inhibitory effect on cellular and humoral immunity of mice after 30 day feeding.展开更多
Previous studies have demonstrated a neuroprotective effect of extract of Ginkgo biloba against neuronal damage, but have mainly focused on antioxidation of extract of Ginkgo biloba. To date, limited studies have dete...Previous studies have demonstrated a neuroprotective effect of extract of Ginkgo biloba against neuronal damage, but have mainly focused on antioxidation of extract of Ginkgo biloba. To date, limited studies have determined whether extrasct of Ginkgo biloba has a protective effect on neuronal damage. In the present study, acrylamide and 30, 60, and 120 mg/kg extract of Ginkgo biloba were administered for 4 weeks by gavage to establish mouse models. Our results showed that 30, 60, and 120 mg/kg extract of Ginkgo biloba effectively alleviated the abnormal gait of poisoned mice, and up-regulated protein expression levels of doublecortin（DCX）, brain-derived neurotrophic factor, and growth associated protein-43（GAP-43） in the hippocampus. Simultaneously, DCX-and GAP-43-immunoreactive cells increased. These findings suggest that extract of Ginkgo biloba can mitigate neurotoxicity induced by acrylamide, and thereby promote neuronal regeneration in the hippocampus of acrylamide-treated mice.展开更多
文摘Acrylamide(AA)is a harmful substance widely found in infant and child biscuits;however,the health hazards of AA,especially endogenous AA,in the biscuit matrix is poorly understood.This study aimed to determine the effects of endogenous(0.11 mg/(kg bw·day))and exogenous(1.31,5.23,and 10.13 mg/(kg bw·day))AA exposure from biscuit diet on the hematology,hormone levels,immune function,and liver and kidney damage in growing female rat pups.For the hematological indices,a quadratic reduction was observed in percentage of neutrophils(Neu%)and percentage of eosinophils(Eos%)in the leukograms and in mean corpuscular hemoglobin concentration and platelet in the erythrograms in all the AA-exposed groups.In terms of hormones,extremely remarkably elevations in estradiol(E_(2))and growth hormone(GH)levels were associated with exogenous AA,and a significant increase in GH levels was noted in the endogenous AA group.Regarding immune function,endogenous and exogenous AA showed a dose-dependent immunotoxic effect on lysozyme(LYSO),nitric oxide(NO),immunoglobulin(Ig)G,and IgM.In particular,the lactate dehydrogenase(LDH)activity was significantly high in the exogenous medium dose(Exo-M)and exogenous high dose(Exo-H)groups,and the percentage of CD3^(+)T cells in the blood and CD8^(+)expression levels in the spleen were significantly elevated in the Exo-H group.For liver and kidney function,exogenous AA had a dose-dependent effect on alanine aminotransferases(ALT),aspartate transferases(AST),alkaline phosphatase(ALP),urea nitrogen(UREA),and creatinine(CREA-S).In addition to the dose-dependent effect on the pathological changes in the liver and kidneys,the endogenous AA group presented with hepatocellular steatosis,kidney inflammatory infiltrates,and glomerular and tubular atrophy.Overall,our findings suggested the dose-dependent harmful effect of endogenous and exogenous AA.Special attention should be paid to the damage caused by exposure to endogenous AA.Stringent AA intake guidelines and measures are required to minimize AA levels in the food matrix.
基金supported by the National Natural Science Foundation of China(21976156)。
文摘Acrylamide is classified as a Class 2A carcinogen and mainly metabolized to produce hepatotoxicity.Phosphatidylcholine is thought to protect the liver from damage,but the protective role of phosphatidylcholine on acrylamide-exposed metabolic disorders remains unclear.We investigated protective effect of phosphatidylcholine on the hepatic metabolism in rats exposed to acrylamide using metabolomics and molecular biology approaches.Overall,32 endogenous effect biomarkers and 4 exposure biomarkers were identified as differential signature metabolites responsible for acrylamide exposure and phosphatidylcholine protection.Acrylamide exposure interferes with glutathione metabolism by consuming antioxidant glutathione,cysteine and L-ascorbic acid,and disrupts lipid and carbohydrate metabolism through reducing carnitine content and increasing lipid peroxidation.The phosphatidylcholine treatment reduces the expression of cytochrome P4502E1,alleviates the oxidative stress and inflammation of the liver,and stabilizes the content of glutathione,and thus alleviates the disorder of glutathione.Meanwhile,phosphatidylcholine shifted acrylamide-induced phosphatidylcholine into lysophosphatidylcholine to storage from lysophosphatidylcholine to diacylglycerol,thereby maintaining metabolic homeostasis of glycerophospholipid.The results suggested that phosphatidylcholine supplementation alleviate the disorder of glutathione and lipid metabolism caused by acrylamide exposure,but not significantly change the levels of mercapturic acid adducts of acrylamide,providing the evidence for phosphatidylcholine protection against acrylamide-induced liver injury.
基金supported by the National Natural Science Foundation of China(32060577 and 32360619)Natural Science Foundation of Jiangxi Province(20224ACB203016 and 20212BAB203034)the Open Project of China Food Flavor and Nutrition Health Innovation Center(CFC2023B-013).
文摘Acrylamide(AA)is a neurotoxin and carcinogen that formed during the thermal food processing.Conventional quantification techniques are difficult to realize on-site detection of AA.Herein,a flower-like bimetallic FeCu nanozyme(FeCuzyme)sensor and portable platform were developed for naked-eye and on-site detection of AA.The FeCuzyme was successfully prepared and exhibited flower-like structure with 3D catalytic centers.Fe/Cu atoms were considered as active center and ligand frameworks were used as cofactor,resulting in collaborative substrate-binding features and remarkably peroxidase-like activity.During the catalytic process,the 3,3′,5,5′-tetrame-thylbenzidine(TMB)oxidation can be quenched by glutathione(GSH),and then restored after thiolene Michael addition reaction between GSH and AA.Given the“on–off–on”effect for TMB oxidation and high PODlike activity,FeCuzyme sensor exhibited a wide linear relationship from 0.50 to 18.00μM(R^(2)=0.9987)and high sensitivity(LOD=0.2360μM)with high stability.The practical application of FeCuzyme sensor was successfully validated by HPLC method.Furthermore,a FeCuzyme portable platform was designed with smartphone/laptop,and which can be used for naked-eye and on-site quantitative determination of AA in real food samples.This research provides a way for rational design of a novel nanozyme-based sensing platform for AA detection.
基金supported by the National Natural Science Foundation of China(22479022)the Natural Science Foundation of Liaoning Province(2020-MS-021)。
文摘Aqueous zinc metal batteries(ZMBs)are vital to potable electronics and electric energy infrastructures because of their high energy conversion efficiency,high energy density,and environmental friendliness.However,rampant zinc dendrite growth and side reactions on the Zn anode seriously impede the practical application of ZMBs.In this work,morpholine-crosslinked polyacrylamide hydrogel electrolytes(ploy(acrylamide),6m-PAM)are successfully developed to simultaneously regulate solvation shell to suppress side reactions and homogenize Zn^(2+)ion migration for dendrite-free ZMBs.Notably,the 6m-PAM electrolyte exhibits excellent mechanical strength of 50.6 kPa,high Zn^(2+)ion conductivity of 52 mS cm^(-1)at room temperature,and fast self-healing ability,providing stable and adaptable electrolyte-anode interfaces.Experimental and theoretical calculation results reveal that Zn^(2+)-N(morpholine)coordination interaction effectively reshapes the primary solvation shell of Zn^(2+),suppressing the activity of free water and Zn dendrites.As a result,the 6m-PAM electrolyte endows symmetric zinc cells with a long-term cycling life of 2000 h at 7.5 mA cm^(-2).Notably,Zn/Polyaniline(PANI)batteries equipped with 6m-PAM electrolytes also exhibit a high capacity of 124 mA h g^(-1)at 1 A g^(-1)and a long cycling life of 4000 times with a high-capacity retention of 98.3%,This functional crosslinked hydrogel electrolyte paves a new way to construct durable dendrite-free ZMBs.
基金supported by the National Natural Science Foundation of China(32271413 and 32271408)the National Basic Research Program of China(2021YFA1201404)+2 种基金the Natural Science Foundation of Jiangsu Province(BK20232023)the Science Program of Jiangsu Province Administration for Market Regulation(KJ2024010)the Jiangsu Provincial Key Medical Center Foundation,and the Jiangsu Provincial Medical Outstanding Talent Foundation.
文摘Hydrogel-based tissue-engineered skin has attracted increased attention due to its potential to restore the structural integrity and functionality of skin.However,the mechanical properties of hydrogel scaffolds and natural skin are substantially different.Here,we developed a polyvinyl alcohol(PVA)/acrylamide based interpenetrating network(IPN)hydrogel that was surface modified with polydopamine(PDA)and termed Dopa-gel.The Dopa-gel exhibited mechanical properties similar to native skin tissue and a superior ability to modulate paracrine functions.Furthermore,a tough scaffold with tensile resistance was fabricated using this hydrogel by three-dimensional printing.The results showed that the interpenetration of PVA,alginate,and polyacrylamide networks notably enhanced the mechanical properties of the hydrogel.Surface modification with PDA endowed the hydrogels with increased secretion of immunomodulatory and proangiogenic factors.In an in vivo model,Dopa-gel treatment accelerated wound closure,increased vascularization,and promoted a shift in macrophages from a proinflammatory M1 phenotype to a prohealing and anti-inflammatory M2 phenotype within the wound area.Mechanistically,the focal adhesion kinase(FAK)/extracellular signal-related kinase(ERK)signaling pathway may mediate the promotion of skin defect healing by increasing paracrine secretion via the Dopa-gel.Additionally,proangiogenic factors can be induced through Rho-associated kinase-2(ROCK-2)/vascular endothelial growth factor(VEGF)-mediated paracrine secretion under tensile stress conditions.Taken together,these findings suggest that the multifunctional Dopa-gel,which has good mechanical properties similar to those of native skin tissue and enhanced immunomodulatory and angiogenic properties,is a promising scaffold for skin tissue regeneration.
基金supported by the National Natural Science Foundation of China(32072142,31972099)Guangxi Science and Technology Base and Talent Special Projects(Guike AD21220004)。
文摘Quercetin compounds have antioxidant,anti-inflammatory and anticancer pharmacological functions.Longterm exposure to acrylamide(AA)can cause liver injury and endanger human health.However,whether quercetin compounds can attenuate AA-induced liver injury and the specific mechanism are not clear.Here,we studied the mechanism and structure-activity relationship of quercetin compounds in reducing AA-induced hepatotoxicity in vivo and in vitro.In vivo studies found that quercetin-like compounds protect against AAinduced liver injury by reducing oxidative stress levels,activating the Akt/m TOR signaling pathway to attenuate autophagy,and improving mitochondrial apoptosis and endoplasmic reticulum stress-mediated apoptosis.In vitro studies found that quercetin compounds protected Hep G2 cells from AA by attenuating the activation of AA-induced autophagy,lowering reactive oxygen species(ROS)levels by exerting antioxidant effects and thus attenuating oxidative stress,increasing mitochondrial membrane potential(MMP),and improving apoptosis-related proteins,thus attenuating AA-induced apoptosis.Furthermore,the conformational differences between quercetin compounds correlated with their protective capacity against AA-induced hepatotoxicity,with quercetin showing the best protective capacity due to its strongest antioxidant activity.In conclusion,quercetin compounds can protect against AA-induced liver injury through multiple pathways of oxidative stress,autophagy and apoptosis,and their protective capacity correlates with antioxidant activity.
基金supported by the project from National Natural Science Foundation of China (31671962)Fundamental Research Funds for the Central Universities (2662019PY034)。
文摘Our previous study has revealed that procyanidin A_(1)(A_(1))and its simulated digestive product(D-A,)can alleviate acrylamide(ACR)-induced intestine cell damage.However,the underlying mechanism remains unknown.In this study,we elucidated the molecular mechanism for and D-A_(1) to alleviate ACR-stimulated IPEC-J2 cell damage.ACR slightly activated nuclear factor erythroid 2-related factor 2(Nrf2)signaling and its target genes,but this activation could not reduce intestine cell damage.A_(1) and D-A_(1) could alleviate ACR-induced cell damage,but the effect was abrogated in cells transiently transfected with Nrf2 small interfering RNA(siRNA).Further investigation confirmed that A_(1) and D-A_(1) interacted with Ketch-like ECH-associated protein 1(Keapl),which boosted the stabilization of Nrf2,subsequently promoted the translocation of Nrf2 into the nucleus,and further increased the expression of antioxidant proteins,thereby inhibiting glutathione(GSH)consumption,maintaining redox balance and eventually alleviating ACR-induced cell damage.Importantly,there was no difference between A_(1) and D-A_(1) treated groups,indicating that A_(1) can tolerate gastrointestinal digestion and may be a potential compound to limit the toxicity of ACR.
基金Shahid Sadoughi University of Medical Sciences,Yazd,Iran(grant number 5689).
文摘Objective:To evaluate the protective effects of probiotic microorganisms on the reproductive and nervous systems of male rats treated with acrylamide.Methods:Thirty-two rats were randomly divided into 4 groups and received normal saline through gavage(control),acrylamide 20 mg/kg body weight,acrylamide plus probiotic microorganisms(Lactobacillus acidophilus,Lactobacillus casei,Lactobacillus bulgaricus,Lactobacillus rhamnosus,Bifidobacterium breve,Bifidobacterium infantis,Streptococcus thermophilus and fructooligosaccharides,all mixed in sachets)20 or 200 mg/kg body weight,respectively.After 30 days,the testis,prostate,seminal vesicle and cerebellum were removed,fixed and stained with hematoxylin-eosin(H&E).The Johnsen score was used to classify spermatogenesis.Cavalieri's principle method was used to evaluate the total volume(in mm3)of the testes.The number of each intratubular cell type as well as intertubular Leydig cells in whole samples was measured using the physical dissector counting techniques.Stereological analysis and the grids were used to determine the volume of cerebellar layers as well as the Purkinje cell number.Results:The testis weight decreased significantly in the acrylamide-treated group compared to the other groups(P<0.001).The number of spermatogonia,spermatocytes,spermatids and Leydig cells in the acrylamide-treated group were significantly less compared to the control group(P<0.05),while they were increased significantly in the acrylamide+200 mg/kg probiotic group(P<0.05;P<0.01).The mean Johnsen score in the acrylamide-treated group was lower than in the control group(P<0.001).Acrylamide-induced changes including congestion,vacuolization in the secretory epithelial cells,and epithelial rupture were observed in the prostate and seminal vesicle.The volumes of cerebellar layers were decreased in the acrylamide group compared to the control group while recovered in both probiotic treated groups.Conclusions:Probiotic microorganisms alleviate acrylamide-induced toxicities against the reproductive and cerebellar tissues in rats.
文摘This study was carried out to prepare ZnO nanoparticles incorporated acrylamide grafted chitosan composite film for possible biomedical application especially drug loading in wound healing. ZnO nanoparticles were prepared by co-precipitation method from zinc acetate di-hydrate and incorporated in acrylamide grafted chitosan. FT-IR and TGA of the prepared composite film confirmed the successful incorporation of ZnO nanoparticles in the acrylamide-grafted polymer matrix. SEM images showed that the ZnO nanoparticles were homogeneously distributed on the porous matrix of the composite film. Water uptake and buffer uptake analysis revealed that the composite film could hold water and buffer sufficiently, which facilitated the absorption of exudate from the wound site. Amoxicillin was loaded in the prepared composite film and the maximum loading efficiency was found to be 67.33% with drug concentration of 300 ppm. In vitro studies showed greater antimicrobial activity of drug-loaded composite film compared to both pure film and standard antibiotic disc. Finally, the In vivo mouse model showed maximum healing efficiency compared to conventional gauge bandages because the loading of antibiotic in the film produced a synergistic effect and healing time was reduced.
文摘Grafting of acrylic acid (AAc) and acrylamide (AAm) onto preirradiated PP film was performed in aqueous solution of AAc and AAm, respectively. Electron beam accelerator was used as irradiation source. The effect of ferrous sulfate, sodium nitrate, methanol and glucose on the degree of grafting was demonstrated. The function of the different additives was compared by the grafting of different monomers (AAc and AAm). The results show that the four of these additives are elective on the grafting of AAc. Only two of these additives, ferrous sulfate and methanol were effective on the grafting of AAm.
文摘Linear copolymers from N-isopropylacrylamide （NIPA）, acrylic acid （AA） and diacetone acrylamide （DAA） have been prepared. The effect of composition, ionic strength and pH on their lower critical solution temperature （LCST） has been investigated.
文摘Objective To determine residual acrylamide in medical polyacrylamide hydrogel by high performance liquid chromatography tandem mass spectroscopy （HPLC-MS）. Methods After 13C3 labeled acrylamide was added, the sample was extracted with water and then cleaned up with ExtrelutTM 20. The polyacrylamide hydrogel sample and 20 clinical cases were analyzed by HPLC-MS/MS and isotope dilution quantifying technique in selected reaction monitoring （SRM） mode. Results Acrylamide was separated from polyacrylamide hydrogel. The concentration of acrylamide in polyacrylamide hydrogel ranged from 3.9×10^-9 to 3.1×10^- 8g/L in the 20 clinical cases. The peak area was favorable linear and the range was up to 3 000 μg/L. The recovery rate was 103.1% with a relative standard deviation （RSD） of 6.20%, when the mark level was 50 lag/L. Conelusion HPLC-MS is a rapid, accurate, and sensitive method for the determination of residual acrylamide in medical polyacrylamide hydrogel.
文摘We report simple acrylamide polymerization process to prepare nanocrystalline tin dioxide(SnO_2) particles.A small amount of the so-called premix solution(monofunctional acrylamide and difunctional N,N'-methylenebisacrylamide) was mixed with the aqueous solution of Sn^(4+) in certain proportion,and a few drops of ammonium persulfate solution were added as initiator.When homogenized by magnetic stirring and heated to about 70℃,the mixed solution became a gel.This hydrous gel was directly decomposed by thermal treatment,resulting in obtaining rutile crystalline SnO_2 particles with a narrow size distribution typically in the range of 20 nm～40 nm.
基金Supported by the National Natural Science Foundation of China(No.30 3716 95 )
文摘Chitosan, as a kind of natural polymer, has many advantages, such as abundant sources, biological degradation, no secondary contamination and facile modification. In this work, we prepared modified chitosan flocculants with double electrical behavior via polymerizing chitosan, acrylamide and sodium carboxymethyl cellulose together by using ammonium persulfate as the indicator in water. The product is a comb-type of chitosan copolymer and a polymeric ampholyte. And then we studied the product by FTIR, UV-Vis, TG, DSC spectrometeries and viscometry, etc. We also performed CACM′s water treat experiment. The effects of pH values, reaction time and dose of the new floccalant on treating various of waste water have been investigated, too.
基金supported by the National Basic Resarch Program of China(2012CB20804)grant from Ministry of Health,PR China(200902009)
文摘Objective To assess the current status of the acrylamide in the Chinese food supply, the dietary acrylamide exposure in the Chinese population and to estimate the public health risks of the current consumption. Methods The acrylamide content in the total diet study （TDS） food samples was analyzed using an LC-MS/MS method. Based on the analytical results, the dietary exposure calculations were performed using a deterministic method, combining mean acrylamide concentrations from the food group composite with their associated food consumptions. Results Acrylamide was detected in 43.7% of all samples collected and acrylamide concentration varied from ND to 526.6 I^g/kg. The estimated dietary intakes of acrylamide among Chinese general population given as the mean and the 95th percentile （P95） were 0.286 and 0.490 iJg.kg1 bw.day1, respectively. The margins of exposure （MOEs） for the population calculated using both benchmark dose lower confidence limit for a 10% extra risk of tumors in animals （BMDL10） 0.31 and 0.18 i^g.k8-1 bw-dayz, were 1069 and 621 for the mean dietary exposure, and 633 and 367 for the high dietary exposure respectively. Conclusion These MOE values might indicate a human health concern on acrylamide for Chinese population. Efforts should continue to reduce acrylamide levels in food in order to reduce the dietary risks to the human health.
基金Financial support was mainly provided to JittimaCharoenpanich from Center of Excellence on Environmental Health,Toxicology and Management of Chemicals(ETM-PERDO)partly from Faculty of Science,Burapha Universitya scholarship support to Kanokhathai Buranasilp from Center of Excellence for Innovation in Chemistry (PERCH-CIC),Commission on Higher Education,Ministry of Education
文摘A widespread use of acrylamide, probably a neurotoxicant and carcinogen, in various industrial processes has led to environmental contamination. Fortunately, some microorganisms are able to derive energy from acrylamide. In the present work, we reported the isolation and characterization of a novel acrylamide-degrading bacterium from domestic wastewater in Chonburi, Thailand. The strain grew well in the presence of acrylamide as 0.5% （W/V）, at pH 6.0 to 9,0 and 25℃. Identification based on biochemical characteristics and 16S rRNA gene sequence identified the strain as Enterobacter aerogenes. Degradation of acrylamide to acrylic acid started in the late logarithmic growth phase as a biomass-dependent pattern. Specificity of cell-free supernatant towards amides completely degraded butyramide and urea and 86% of lactamide. Moderate degradation took place in other amides with that by formanaide 〉 benzamide 〉 acetamide 〉 cyanoacetamide 〉 propionamide. No degradation was detected in the reactions of N,N-methylene bisacrylamide, sodium azide, thioacetamide, and iodoacetamide. These results highlighted the potential of this bacterium in the cleanup of acrylamide/amide in the environment.
基金supported by State Key Development Program for Basic Research of China,No.2012CB525002the National Natural Science Foundation of China,No.30771823
文摘Previous studies show that chronic acrylamide exposure leads to central and peripheral neu- ropathy. However, the underlying mechanisms remained unclear. In this study, we examined the permeability of the blood-cerebrospinal fluid barrier, and its ability to secrete transthyretin and transport leptin of rats exposed to acrylamide for 7, 14, 21 or 28 days. Transthyretin levels in cerebrospinal fluid began to decline on day 7 after acrylamide exposure. The sodium fluorescein level in cerebrospinal fluid was increased on day 14 after exposure. Evans blue concentration in cerebrospinal fluid was increased and the cerebrospinal fluid/serum leptin ratio was decreased on days 21 and 28 after exposure. In comparison, the cerebrospinal fluid/serum albumin ratio was increased on day 28 after exposure. Our findings show that acrylamide exposure damages the blood-cerebrospinal fluid barrier and impairs secretory and transport functions. These changes may underlie acrylamide-induced neurotoxicity.
文摘Swelling property of acrylamide hydrogels,prepared from aqueous solutions of acrylamide monomer havingconcentrations in the range of 10-60 wt% by ray irradiation method using a Co-60 gamma radiation source at dosesranging 1-30.0 kGy,has been investigated under various swelling media.These swelling media were basically solvents(solutions),produced by dissolving methanol,ethanol,glucose,sucrose,sodium chloride and sodium persulfate individuallywith distilled water,and solutions prepared with pHs=3,7 and 10.The investigation was performed in order to observe theeffect of these solvents and pHs as well as the influence of monomer concentrations,radiation doses and times on swellingbehavior of hydrogels.Swelling values were found higher for hydrogels prepared with lower monomer concentrations(ca.20 wt%)and radiation doses(ca.5 kGy)and showed a leveling off tendency within 24 h.The glucose solvent and the buffersolution of pH=10 revealed significant increase of swelling of hydrogels as compared to other solutions.Results areexplained based on crosslinking density in hydrogel,polymer-solvent/polymer-polymer interactions in solutions,permeability of molecules in solutions and ionization capacity of hydrogel in pH.
基金supported by the National Science and Technology Support Program(2012BAK01B00)
文摘Objective To investigate the immunotoxicity of acrylamide （ACR） in female BALB/c mice.Methods A total of 200 female mice weighing 18-22 g were randomly divided into four clusters based on body weight, and each weight-based cluster included five groups （10 mice per group）： negative control, positive control （cyclophosphamide）, low, intermediate, and high dose ACR groups, and all the groups were administered ACR by gavage for 30 days. At the end of the study, the immunotoxicological effects of the ACR were evaluated through immunopathology, humoral immunity, cellular immunity, and non-specific immunity. Results The terminal body weight, spleen and thymus weights, lymphocyte counts in the ACR-H group were decreased, pathological changes were observed in lymph glands, thymus and spleen. %T cells in blood lymphocytes were significantly increased in all ACR-treated groups, and a significant reduction of % natural killer（NK） cells and increase of %Th cells were observed in the ACR-H group. interleukin-6（IL-6）, Concanavalin A（ConA）-induced splenocyte proliferation and serum half hemolysis value （HCso） were also significantly suppressed in the ACR-H group. Conclusion ACR elicited an inhibitory effect on cellular and humoral immunity of mice after 30 day feeding.
基金supported by the Natural Science Foundation of Guangdong Province of China,No.2014A030310455the Pearl River S&T Nova Program Foundation of Guangzhou City of China,No.201710010002
文摘Previous studies have demonstrated a neuroprotective effect of extract of Ginkgo biloba against neuronal damage, but have mainly focused on antioxidation of extract of Ginkgo biloba. To date, limited studies have determined whether extrasct of Ginkgo biloba has a protective effect on neuronal damage. In the present study, acrylamide and 30, 60, and 120 mg/kg extract of Ginkgo biloba were administered for 4 weeks by gavage to establish mouse models. Our results showed that 30, 60, and 120 mg/kg extract of Ginkgo biloba effectively alleviated the abnormal gait of poisoned mice, and up-regulated protein expression levels of doublecortin（DCX）, brain-derived neurotrophic factor, and growth associated protein-43（GAP-43） in the hippocampus. Simultaneously, DCX-and GAP-43-immunoreactive cells increased. These findings suggest that extract of Ginkgo biloba can mitigate neurotoxicity induced by acrylamide, and thereby promote neuronal regeneration in the hippocampus of acrylamide-treated mice.
