Recently,Mueller matrix(MM)polarimetric imaging-assisted pathology detection methods are showing great potential in clinical diagnosis.However,since our human eyes cannot observe polarized light directly,it raises a n...Recently,Mueller matrix(MM)polarimetric imaging-assisted pathology detection methods are showing great potential in clinical diagnosis.However,since our human eyes cannot observe polarized light directly,it raises a notable challenge for interpreting the measurement results by pathologists who have limited familiarity with polarization images.One feasible approach is to combine MM polarimetric imaging with virtual staining techniques to generate standardized stained images,inheriting the advantages of information-abundant MM polarimetric imaging.In this study,we develop a model using unpaired MM polarimetric images and bright-field images for generating standard hematoxylin and eosin(H&E)stained tissue images.Compared with the existing polarization virtual staining techniques primarily based on the model training with paired images,the proposed Cycle-Consistent Generative Adversarial Networks(CycleGAN)-based model simplifies data acquisition and data preprocessing to a great extent.The outcomes demonstrate the feasibility of training CycleGAN with unpaired polarization images and their corresponding bright-field images as a viable approach,which provides an intuitive manner for pathologists for future polarization-assisted digital pathology.展开更多
This study aims to compare the clinical value of a general large language model(DeepSeek GPT)and a disease-specific optimized model(BAIMGPT)in pulmonary nodule consultation and management.Through a multicenter real-wo...This study aims to compare the clinical value of a general large language model(DeepSeek GPT)and a disease-specific optimized model(BAIMGPT)in pulmonary nodule consultation and management.Through a multicenter real-world study,1,000 patients with pulmonary nodules from 12 hospitals will be recruited for a randomized self-controlled trial evaluating the performance of the two models across eight dimensions:convenience,friendliness,sense of security,accuracy in question comprehension,response professionalism,voice interaction,visual empowerment,and demand level.The core methodologies include dual user evaluation,third-party blinded review,and endpoint assessment.The study was expected to validate BAIMGPT’s advantages in improving screening awareness,personalized management,and physician-patient trust,providing evidence-based support for AI-powered early lung cancer screening.The protocol has passed ethical review,with anonymized data processing ensuring both innovation and safety.展开更多
Programmed cell death(PCD)plays a crucial role in the biological processes of living organisms and occurs in various forms,such as apoptosis,necroptosis and ferroptosis.However,traditional methods for PCD analysis are...Programmed cell death(PCD)plays a crucial role in the biological processes of living organisms and occurs in various forms,such as apoptosis,necroptosis and ferroptosis.However,traditional methods for PCD analysis are time-consuming and complex.In this paper,we propose a facile surface-enhanced Raman spectroscopy(SERS)-based strategy for the real-time analysis of three PCD patterns utilizing black phosphorus–gold nanoparticles(BP–Au NPs)as the ultrasensitive unlabeled Raman probe.BP–Au NPs,which possess excellent biocompatibility,are capable of detecting dye molecules at concentrations as low as 5×10^(-8)M and remain stable for at least one week in different physiological environments.In view of this,BP–Au NPs-based SERS technique can distinguish the tiny differences in the molecular fingerprints of cancer cells undergoing three PCD patterns(apoptosis,necroptosis and ferroptosis)triggered by doxorubicin,shikonin and erastin,respectively.We also have real-time monitoring of the intracellular molecular events during PCD,which spy the fluctuations of some typical SERS bands assigned to protein,DNA and lipid,revealing the unique phenotypic characteristics of each PCD pattern.This strategy provides a detailed and comprehensive analysis of the mechanisms of drug-induced PCD at the Raman level.展开更多
OBJECTIVE:To evaluate the efficacy and safety of Hemoheal cream,an anti-hemorrhoid herbal preparation,(inspired by Persian medicine literatures in a double-blind,randomized placebo-controlled trial.METHODS:Hemoheal cr...OBJECTIVE:To evaluate the efficacy and safety of Hemoheal cream,an anti-hemorrhoid herbal preparation,(inspired by Persian medicine literatures in a double-blind,randomized placebo-controlled trial.METHODS:Hemoheal cream consists of aqueous extract of Allium ampeloprasum L.,Commiphora mukul(Hook.Ex Stocks)Engl and the oil of Sesamum indicum L.Fifty-two patients with symptomatic hemorrhoids were randomized to receive hemoheal cream or placebo for 3 weeks.The patients were evaluated before and after the intervention in terms of the severity of anal irritation,bleeding,anal itching,pain,defecation discomfort and swelling sense,and overall subjective improvement(%),as well as any reported adverse events.RESULTS:The results showed that after 3 weeks of treatment,distribution of anal irritation,bleeding,pain as well as swelling sense were significantly different(P<0.05),while the analysis showed no significant differences between two groups for anal itching and defecation discomfort(P>0.05).Furthermore,a significant difference was observed between the overall subjective improvement of Hemoheal cream and placebo groups(P=0.012).One patient in the treatment group complained of rashes on the application site.CONCLUSION:The present study showed a positive effect of Hemoheal cream in improving clinical signs and symptoms in patients with hemorrhoids.展开更多
AIM： To characterize the clinical, serologic and virologic features of hepatitis B virus （HBV） infection in Iranian patients with different stages of liver disease.METHODS： Sixty two patients comprising of 12 inac...AIM： To characterize the clinical, serologic and virologic features of hepatitis B virus （HBV） infection in Iranian patients with different stages of liver disease.METHODS： Sixty two patients comprising of 12 inactive carriers, 30 chronic hepatitis patients, 13 patients with liver cirrhosis and 7 patients with hepatocellular carcinoma （HCC） were enrolled in the study. The HBV S, C and basal core promoter （BCP） regions were amplified and sequenced, and the clinical, serologic, phylogenetic and virologic characteristics were investigated.RESULTS： The study group consisted of 16 HBeAgpositive and 46 HBeAg-negative patients. Anti-HBepositive patients were older and had higher levels of ALT, ASL and bilirubin compared to HBeAg-positive patients. Phylogenetic analysis revealed that all patients were infected with genotype D （mostly ayw2）. The G1896A precore （PC） mutant was detected in 58.1% patients. HBeAg-negative patients showed a higher rate of PC mutant compared to HBeAg-positive patients （2,2 = 9.682, P = 0.003）. The majority of patients with HCC were HBeAg-negative and were infected with PC mutant variants. There was no significant difference in the occurrence of BCP mutation between the two groups, while the rate of BCP plus PC mutants was higher in HBeAg-negative patients （2,2 = 4.308, P = 0.04）. In the HBV S region, the genetic variability was low, and the marked substitution was P120T/S, with a rate of 9.7% （n = 6）.CONCLUSION： In conclusion, HBV/D is the predominant genotype in Iran, and the nucleotide variability in the BCP and PC regions may play a role in HBV disease outcome in HBeAg-negative patients.展开更多
Two-dimensional(2D)nanomaterials have captured an increasing attention in biophotonics owing to their excellent optical features.Herein,2D hafnium ditelluride(HfTe_(2)),a new member of transition metal tellurides,is e...Two-dimensional(2D)nanomaterials have captured an increasing attention in biophotonics owing to their excellent optical features.Herein,2D hafnium ditelluride(HfTe_(2)),a new member of transition metal tellurides,is exploited to support gold nanoparticles fabricating HfTe_(2)-Au nanocomposites.The nanohybrids can serve as novel 2D surface-enhanced Raman scattering(SERS)substrate for the label-free detection of analyte with high sensitivity and reproducibility.Chemical mechanism originated from HfTe_(2) nanosheets and the electromagnetic enhancement induced by the hot spots on the nano-hybrids may largely contribute to the superior SERS effect of HfTe_(2)-Au nanocomposites.Finally,HfTe_(2)-Au nanocomposites are utilized for the label-free SERS analysis of foodborne pathogenic bac-teria,which realize the rapid and ultrasensitive Raman test of Escherichia coli,Listeria mono-cytogenes,Staphylococcus aureus and Salmonella with the limit of detection of 10 CFU/mL and the maximum Raman enhancement factor up to 1.7×10^(8).Combined with principal component analysis,HfTe_(2)-Au-based SERS analysis also completes the bacterial classification without extra treatment.展开更多
Theranostic carbon dots(CDs)have attracted widespread attention recently due to their tunable optical properties and diverse bioactivities.Beyond fluorescent imaging application,the photothermal property endows CDs wi...Theranostic carbon dots(CDs)have attracted widespread attention recently due to their tunable optical properties and diverse bioactivities.Beyond fluorescent imaging application,the photothermal property endows CDs with the potential for microbial inactivation.However,realization of the effective conversion between fluorescence and heat in one CD system has rarely been reported.Herein,we provide a simple strategy for targeted microbial theranostics based on 4-carboxyphenylboronic acid-derived CDs(PCBA-CDs)which possess concentration-dependent photoluminescence/photothermal features.At lower concentrations,PCBA-CDs show bright and stable fluorescent signals ranging from blue to green.The fluorescence intensity gradually decreases with increasing concentration,while on the contrary,the photothermal effect of PCBA-CDs ascends progressively due to the rearrangement of electronic transitions in aggregated CDs.PCBA-CDs also demonstrate high affinity to the polysaccharide structures on the surface of microbe which allows rapid microbial fluorescence imaging as well as specific photothermal ablation of pathogens in skin wounds using PCBA-CDs at lower and higher concentrations,respectively.This study supplies a facile nanotheranostic strategy for just-in-time microbial management using bioactive CDs.展开更多
Mucinous cystic tumor of the gallbladder is an extremely rare benign tumor,with potential for malignant degeneration.Mucinous cystic tumors of the cystic duct are divided into mucinous cystadenoma and mucinous cystade...Mucinous cystic tumor of the gallbladder is an extremely rare benign tumor,with potential for malignant degeneration.Mucinous cystic tumors of the cystic duct are divided into mucinous cystadenoma and mucinous cystadenocarcinoma.Currently,cystadenoma is generally considered to be a precancerous lesion of cystadenocarcinoma.At present,there are few cases reported worldwide,and there are no relevant guidelines for diagnosis and treatment of this disease.This article presents the collected clinical data of a patient with mucinous cystic tumor of the gallbladder who was admitted to the First Affiliated Hospital of Hunan Normal University,with the characteristics of the disease summarized in combination with a focused literature review.展开更多
基金Shenzhen Key Fundamental Research Project(No.JCYJ20210324120012035).
文摘Recently,Mueller matrix(MM)polarimetric imaging-assisted pathology detection methods are showing great potential in clinical diagnosis.However,since our human eyes cannot observe polarized light directly,it raises a notable challenge for interpreting the measurement results by pathologists who have limited familiarity with polarization images.One feasible approach is to combine MM polarimetric imaging with virtual staining techniques to generate standardized stained images,inheriting the advantages of information-abundant MM polarimetric imaging.In this study,we develop a model using unpaired MM polarimetric images and bright-field images for generating standard hematoxylin and eosin(H&E)stained tissue images.Compared with the existing polarization virtual staining techniques primarily based on the model training with paired images,the proposed Cycle-Consistent Generative Adversarial Networks(CycleGAN)-based model simplifies data acquisition and data preprocessing to a great extent.The outcomes demonstrate the feasibility of training CycleGAN with unpaired polarization images and their corresponding bright-field images as a viable approach,which provides an intuitive manner for pathologists for future polarization-assisted digital pathology.
文摘This study aims to compare the clinical value of a general large language model(DeepSeek GPT)and a disease-specific optimized model(BAIMGPT)in pulmonary nodule consultation and management.Through a multicenter real-world study,1,000 patients with pulmonary nodules from 12 hospitals will be recruited for a randomized self-controlled trial evaluating the performance of the two models across eight dimensions:convenience,friendliness,sense of security,accuracy in question comprehension,response professionalism,voice interaction,visual empowerment,and demand level.The core methodologies include dual user evaluation,third-party blinded review,and endpoint assessment.The study was expected to validate BAIMGPT’s advantages in improving screening awareness,personalized management,and physician-patient trust,providing evidence-based support for AI-powered early lung cancer screening.The protocol has passed ethical review,with anonymized data processing ensuring both innovation and safety.
基金supported by the National Natural Science Foundation of China(62175071 and 32071399)the Guangdong Basic and Applied Basic Research Foundation(2021A1515011988 and 2021A1515110265)+2 种基金the Project of the Education Department of Guangdong Province,China(2021KTSCX238 and 2022ZDZX2077)the Project of Guangdong Food and Drug Vocational College(2020ZR01,2022ZR02 and 2024GCZX01)the Open Foundation of Key Laboratory of Optoelectronic Science and Technology for Medicine(Fujian Normal University),Ministry of Education,China(JYG2008 and JYG2009).
文摘Programmed cell death(PCD)plays a crucial role in the biological processes of living organisms and occurs in various forms,such as apoptosis,necroptosis and ferroptosis.However,traditional methods for PCD analysis are time-consuming and complex.In this paper,we propose a facile surface-enhanced Raman spectroscopy(SERS)-based strategy for the real-time analysis of three PCD patterns utilizing black phosphorus–gold nanoparticles(BP–Au NPs)as the ultrasensitive unlabeled Raman probe.BP–Au NPs,which possess excellent biocompatibility,are capable of detecting dye molecules at concentrations as low as 5×10^(-8)M and remain stable for at least one week in different physiological environments.In view of this,BP–Au NPs-based SERS technique can distinguish the tiny differences in the molecular fingerprints of cancer cells undergoing three PCD patterns(apoptosis,necroptosis and ferroptosis)triggered by doxorubicin,shikonin and erastin,respectively.We also have real-time monitoring of the intracellular molecular events during PCD,which spy the fluctuations of some typical SERS bands assigned to protein,DNA and lipid,revealing the unique phenotypic characteristics of each PCD pattern.This strategy provides a detailed and comprehensive analysis of the mechanisms of drug-induced PCD at the Raman level.
基金Supported by Kermanshah University of Medical Sciences(grant No.96455)。
文摘OBJECTIVE:To evaluate the efficacy and safety of Hemoheal cream,an anti-hemorrhoid herbal preparation,(inspired by Persian medicine literatures in a double-blind,randomized placebo-controlled trial.METHODS:Hemoheal cream consists of aqueous extract of Allium ampeloprasum L.,Commiphora mukul(Hook.Ex Stocks)Engl and the oil of Sesamum indicum L.Fifty-two patients with symptomatic hemorrhoids were randomized to receive hemoheal cream or placebo for 3 weeks.The patients were evaluated before and after the intervention in terms of the severity of anal irritation,bleeding,anal itching,pain,defecation discomfort and swelling sense,and overall subjective improvement(%),as well as any reported adverse events.RESULTS:The results showed that after 3 weeks of treatment,distribution of anal irritation,bleeding,pain as well as swelling sense were significantly different(P<0.05),while the analysis showed no significant differences between two groups for anal itching and defecation discomfort(P>0.05).Furthermore,a significant difference was observed between the overall subjective improvement of Hemoheal cream and placebo groups(P=0.012).One patient in the treatment group complained of rashes on the application site.CONCLUSION:The present study showed a positive effect of Hemoheal cream in improving clinical signs and symptoms in patients with hemorrhoids.
基金A grant from the Nanotechnology committee of the Ministry of Science, Research and Technology, Iran, No. 31.1895 on 05.03.2004 to Majid Sadeghizadeh
文摘AIM： To characterize the clinical, serologic and virologic features of hepatitis B virus （HBV） infection in Iranian patients with different stages of liver disease.METHODS： Sixty two patients comprising of 12 inactive carriers, 30 chronic hepatitis patients, 13 patients with liver cirrhosis and 7 patients with hepatocellular carcinoma （HCC） were enrolled in the study. The HBV S, C and basal core promoter （BCP） regions were amplified and sequenced, and the clinical, serologic, phylogenetic and virologic characteristics were investigated.RESULTS： The study group consisted of 16 HBeAgpositive and 46 HBeAg-negative patients. Anti-HBepositive patients were older and had higher levels of ALT, ASL and bilirubin compared to HBeAg-positive patients. Phylogenetic analysis revealed that all patients were infected with genotype D （mostly ayw2）. The G1896A precore （PC） mutant was detected in 58.1% patients. HBeAg-negative patients showed a higher rate of PC mutant compared to HBeAg-positive patients （2,2 = 9.682, P = 0.003）. The majority of patients with HCC were HBeAg-negative and were infected with PC mutant variants. There was no significant difference in the occurrence of BCP mutation between the two groups, while the rate of BCP plus PC mutants was higher in HBeAg-negative patients （2,2 = 4.308, P = 0.04）. In the HBV S region, the genetic variability was low, and the marked substitution was P120T/S, with a rate of 9.7% （n = 6）.CONCLUSION： In conclusion, HBV/D is the predominant genotype in Iran, and the nucleotide variability in the BCP and PC regions may play a role in HBV disease outcome in HBeAg-negative patients.
基金supported by the National Natural Science Foundation of China(11874021,61675072 and 21505047)the Science and Technology Project of Guangdong Province of China(2017A020215059)+2 种基金the Science and Technology Project of Guangzhou City(201904010323 and 2019050001)the Innovation Project of Graduate School of South China Normal University School(2019LKXM023)the Natural Science Research Project of Guangdong Food and Drug Vocational College(2019ZR01)
文摘Two-dimensional(2D)nanomaterials have captured an increasing attention in biophotonics owing to their excellent optical features.Herein,2D hafnium ditelluride(HfTe_(2)),a new member of transition metal tellurides,is exploited to support gold nanoparticles fabricating HfTe_(2)-Au nanocomposites.The nanohybrids can serve as novel 2D surface-enhanced Raman scattering(SERS)substrate for the label-free detection of analyte with high sensitivity and reproducibility.Chemical mechanism originated from HfTe_(2) nanosheets and the electromagnetic enhancement induced by the hot spots on the nano-hybrids may largely contribute to the superior SERS effect of HfTe_(2)-Au nanocomposites.Finally,HfTe_(2)-Au nanocomposites are utilized for the label-free SERS analysis of foodborne pathogenic bac-teria,which realize the rapid and ultrasensitive Raman test of Escherichia coli,Listeria mono-cytogenes,Staphylococcus aureus and Salmonella with the limit of detection of 10 CFU/mL and the maximum Raman enhancement factor up to 1.7×10^(8).Combined with principal component analysis,HfTe_(2)-Au-based SERS analysis also completes the bacterial classification without extra treatment.
基金supported by the National Natural Science Foundation of China(Nos.32071399 and 62175071)the Guangdong Basic and Applied Basic Research Foundation(Nos.2021A1515011988 and 2021A1515110265)+2 种基金the Science and Technology Program of Guangzhou(No.2019050001)the Project on the Education Department of Guangdong(Nos.2021KTSCX238 and 2022ZDZX2077)the Natural Science Research Project of Guangdong Food and Drug Vocational College(Nos.2020ZR01 and 2022ZR02).
文摘Theranostic carbon dots(CDs)have attracted widespread attention recently due to their tunable optical properties and diverse bioactivities.Beyond fluorescent imaging application,the photothermal property endows CDs with the potential for microbial inactivation.However,realization of the effective conversion between fluorescence and heat in one CD system has rarely been reported.Herein,we provide a simple strategy for targeted microbial theranostics based on 4-carboxyphenylboronic acid-derived CDs(PCBA-CDs)which possess concentration-dependent photoluminescence/photothermal features.At lower concentrations,PCBA-CDs show bright and stable fluorescent signals ranging from blue to green.The fluorescence intensity gradually decreases with increasing concentration,while on the contrary,the photothermal effect of PCBA-CDs ascends progressively due to the rearrangement of electronic transitions in aggregated CDs.PCBA-CDs also demonstrate high affinity to the polysaccharide structures on the surface of microbe which allows rapid microbial fluorescence imaging as well as specific photothermal ablation of pathogens in skin wounds using PCBA-CDs at lower and higher concentrations,respectively.This study supplies a facile nanotheranostic strategy for just-in-time microbial management using bioactive CDs.
基金This work was financially supported by following funds:Huxiang Youth Talent Support Program(Grant No.2020RC3066)Postdoctoral Innovation Talents Project(Grant No.2020RC2064)+1 种基金Hunan Provincial Natural Science Foundation of China(Grant No.2019JJ50320/2020JJ5610)The Project of Improving the Diagnosis and Treatment Capacity of Hepatobiliary,Pancreas and Intestine Disease in Hunan Province(Xiangwei[2019]Grant No.118).
文摘Mucinous cystic tumor of the gallbladder is an extremely rare benign tumor,with potential for malignant degeneration.Mucinous cystic tumors of the cystic duct are divided into mucinous cystadenoma and mucinous cystadenocarcinoma.Currently,cystadenoma is generally considered to be a precancerous lesion of cystadenocarcinoma.At present,there are few cases reported worldwide,and there are no relevant guidelines for diagnosis and treatment of this disease.This article presents the collected clinical data of a patient with mucinous cystic tumor of the gallbladder who was admitted to the First Affiliated Hospital of Hunan Normal University,with the characteristics of the disease summarized in combination with a focused literature review.
