The gastrointestinal tract is essential for food digestion,nutrient absorption,waste elimination,and microbial defense.Single-cell transcriptome profiling of the intestinal tract has greatly enriched our understanding...The gastrointestinal tract is essential for food digestion,nutrient absorption,waste elimination,and microbial defense.Single-cell transcriptome profiling of the intestinal tract has greatly enriched our understanding of cellular diversity,functional heterogeneity,and their importance in intestinal tract development and disease.Although such profiling has been extensively conducted in humans and mice,the single-cell gene expression landscape of the pig cecum remains unexplored.Here,single-cell RNA sequencing was performed on 45572 cells obtained from seven cecal samples in pigs at four different developmental stages(days(D)30,42,150,and 730).Analysis revealed 12 major cell types and 38 subtypes,as well as their distinctive genes,transcription factors,and regulons,many of which were conserved in humans.An increase in the relative proportions of CD8^(+)T and Granzyme A(low expression)natural killer T cells(GZMA^(low)NKT)cells and a decrease in the relative proportions of epithelial stem cells,Tregs,RHEX^(+)T cells,and plasmacytoid dendritic cells(pDCs)were noted across the developmental stages.Moreover,the post-weaning period exhibited an up-regulation in mitochondrial genes,COX2 and ND2,as well as genes involved in immune activation in multiple cell types.Cell-cell crosstalk analysis indicated that IBP6^(+)fibroblasts were the main signal senders at D30,whereas IBP6^(−)fibroblasts assumed this role at the other stages.NKT cells established interactions with epithelial cells and IBP6^(+)fibroblasts in the D730 cecum through mediation of GZMA-F2RL1/F2RL2 pairs.This study provides valuable insights into cellular heterogeneity and function in the pig cecum at different development stages.展开更多
Toll-like receptors （TLRs） are a group of highly conserved molecules which initiate the innate immune response to pathogens by recognizing structural motifs of microbes. Understanding the changes in chicken Toll-lik...Toll-like receptors （TLRs） are a group of highly conserved molecules which initiate the innate immune response to pathogens by recognizing structural motifs of microbes. Understanding the changes in chicken Toll-like receptors （ChTLRs） and signal adaptors expression that occur with Eimeria tenella infection will help to elucidate the molecular basis of immune control of coccidiosis caused by Eimeria. The present study detected the dynamic changes in the expression of ChTLRs and associated signal adaptors in the spleen and cecum ofE. tenella-infected chickens during the early stage of infection. The results showed that the expression peak for ChTLRs, MyD88 and TRIF occurred at 12 h post-infection （hpi）, ChTLR3, ChTLRI 5 and MyD88 mRNA expression in the spleen ofE. tenella infected chickens were significantly higher （P〈0.05） than that of negative control chickens, and there were similar tendencies of these molecules expression in the cecum and spleen of E. tenella-infected chickens. The expression of MyD88 was upregnlated at four time points in the cecum of E. tenella-infected chickens. The results of this study indicate that ChTLR3, ChTLR15 and MyD88 play a role in young chickens infected with E. tenella.展开更多
[ Objective] This study aimed to investigate the effects of crude extract of Poria cocos on intestinal smooth muscle contraction of rabbits in vitro and re- veal the related mechanism. [Method] With in vitro experimen...[ Objective] This study aimed to investigate the effects of crude extract of Poria cocos on intestinal smooth muscle contraction of rabbits in vitro and re- veal the related mechanism. [Method] With in vitro experimental method, using the tension of jejunal and cecal smooth muscle as an indicator, 3.75, 7.50, 15.00, and 22.5 g/L crude extract of P. cocos were added into Tyrede＇s solution of jejunum and cecum tissues of rabbits to observe the effects of crude extract of P. cocos on motion dynamics of jejunum and cecum of rabbits. [ Result] The addition of crude extract of P. cocos could inhibit the contraction of jejunal and cecal smooth muscle of rabbits in vitro, enhance contraction tension and relaxation tension, and reduce contraction amplitude. The effects were improved as the dose of crude extract of P. cocos increased, displaying a dose-effect relationship. [Condusion] This study provided theoretical basis for the clinical use of P. cocos.展开更多
A granular cell tumor (GCT) is a benign neoplasm of unclear histogenesis that is generally believed to be of nerve sheath origin.GCT is not common and most often affects the tongue,skin and soft tissue,although it may...A granular cell tumor (GCT) is a benign neoplasm of unclear histogenesis that is generally believed to be of nerve sheath origin.GCT is not common and most often affects the tongue,skin and soft tissue,although it may occur anywhere in the body.We experienced a case of GCT that arose in the cecum of a 55-yearold man.The GCT was removed by laparoscopic resection.In addition to the tumor,endoscopic examination revealed the presence of a 5-mm-polyp in the descending colon and multiple tiny polyps in the sigmoid colon and rectum.Histological examination demonstrated a cecal tumor 1.5 cm × 1.0 cm × 0.7 cm with a hard consistency;in cut sections,mixed cells with yellowish and whitish portions were seen.The tumor was located between the mucosa and subserosa,and was composed of plump histiocyte-like tumor cells with abundant granular eosinophilic cytoplasm,which were immunoreactive for S-100 protein,vimentin,neuron-specific enolase,inhibin-α and calretinin.The tumor showed extensive hyalinization and focal dystrophic calcification.Immunohistochemical profiles did not confirm any particular cell type for the histogenetic origin of the GCT,including a nerve sheath origin.Extensive hyalinization and calcifi cation showing involution of tumor cells suggest benign clinical behavior of GCT.展开更多
We report a case of 28-year-old woman presenting with small bowel obstruction. She had neither prior surgery nor delivery. An upright abdominal radiograph revealed several air-fluid levels in the small bowel in the mi...We report a case of 28-year-old woman presenting with small bowel obstruction. She had neither prior surgery nor delivery. An upright abdominal radiograph revealed several air-fluid levels in the small bowel in the midabdomen and the pelvic cavity. Computed tomography demonstrated a dilated small bowel loop in the Douglas＇s fossa, but no definite diagnosis could be made. Supportive therapy with draining the intestinal fluid by a long intestinal tube did not result in improvement, which suggested the possibility of a strangulated hernia. Exploratory laparotomy revealed mobile cecum and a 20-cm length of the ileum herniated into a defect of the right broad ligament. As a gangrenous change was recognized in the incarcerated bowel, its resection was carried out, followed by endto-end anastomosis and closure of the defects of the broad ligament. The postoperative course was uneventful. Intestinal obstruction is a very common cause for presentation to an emergency department, while internal hernia is a rare cause of obstruction. Among internal hernias, those through defects of the broad ligament are extremely rare. Defects of the broad ligament can be either congenital or secondary to surgery, pelvic inflammatory disease, and delivery trauma. In conclusion, we emphasize that hernia of the broad ligament should be added to the list of differential diagnosis for female patients presenting with an intestinal obstruction. Early diagnosis and surgical repair reduce morbidity and mortality from strangulation.展开更多
A 27-year-old man with recurrent right lower quadrant pain was admitted to our hospital. Ultrasonography and computed tomography examination of the abdomen revealed a target sign in the ascending colon, which was comp...A 27-year-old man with recurrent right lower quadrant pain was admitted to our hospital. Ultrasonography and computed tomography examination of the abdomen revealed a target sign in the ascending colon, which was compatible with the diagnosis of cecal intussusception. The intussusception was spontaneously resolved at that time, but it relapsed 6 mo later. The patient underwent a successful colonoscopic disinvagination; there was no evidence of neoplastic or inflammatory lesions in the colon and terminal ileum. The patient underwent laparoscopic surgery for recurring cecal intussusception. During laparoscopy, we observed an unfixed cecum on the posterior peritoneum(i.e. a mobile cecum). Thus, we performed laparoscopic appendectomy and cecopexy with a lateral peritoneal flap using a barbed wound suture device. The patient's post-operative course was uneventful, and he continued to do well without recurrence at 10 mo after surgery. Laparoscopic cecopexy using a barbed wound suture device is a simple and reliable procedure that can be the treatment of choice for recurrent cecal intussusception associated with a mobile cecum.展开更多
AIM To study the counteraction of perforated cecum lesion using BPC 157 and nitric oxide(NO) system agents.METHODS Alongside with the agents' application(after 1 min, medication(/kg, 10 ml/2 min bath/rat) includes...AIM To study the counteraction of perforated cecum lesion using BPC 157 and nitric oxide(NO) system agents.METHODS Alongside with the agents' application(after 1 min, medication(/kg, 10 ml/2 min bath/rat) includes: BPC 157(10 μg), L-NAME(5 mg), L-arginine(100mg) alone or combined, and saline baths(controls)) on the rat perforate cecum injury, we continuously assessed the gross reappearance of the vessels(USB microcamera) quickly propagating toward the defect at the cecum surface, defect contraction, bleeding attenuation, MDA-and NO-levels in cecum tissue at 15 min, and severity of cecum lesions and adhesions at 1 and 7 d. RESULTS Post-injury, during/after a saline bath, the number of vessels was significantly reduced, the defect was slightly narrowed, bleeding was significant and MDA-levels increased and NO-levels decreased. BPC 157 bath: the vessel presentation was markedly increased, the defect was noticeably narrowed, the bleeding time was shortened and MDA-and NO-levels remained normal. L-NAME: reduced vessel presentation but not more than the control, did not change defect and shortened bleeding. L-arginine: exhibited less vessel reduction, did not change the defect and prolonged bleeding. In combination, mutual counteraction occurred(L-NAME + L-arginine) or the presentation was similar to that of BPC 157 rats(BPC 157 + L-NAME; BPC 157 + L-arginine; BPC 157 + L-NAME + L-arginine), except the defect did not change. Thereby at day 1 and 7, saline, L-NAME, L-arginine and L-NAME + L-arginine failed(defect was still open and large adhesions present). CONCLUSION The therapeutic effect was achieved with BPC 157 alone or in combination with L-NAME and L-arginine as it was able to consolidate the stimulating and inhibiting effects of the NO-system towards more effective healing recruiting vessels.展开更多
AIM： Although the radiological teatures of acute appendicitis have been well documented, the value of plain radiography has not been fully appredated. The aim of this study was to determine the frequency of the assoc...AIM： Although the radiological teatures of acute appendicitis have been well documented, the value of plain radiography has not been fully appredated. The aim of this study was to determine the frequency of the association of acute appendicitis with images of fecal loading in the cecum,METHODS： Plain abdominal radiographs of 400 patients operated upon for acute appendicitis （n = 100）, acute cholecystitis （n = 100）, right acute pelvic inflammatory disease （n = 100） and right nephrolithiasis （n = 100） were assessed. The presence of fecal loading was recorded and the sensitivity and specificity of this sign for acute appendicitis were calculated.RESULTS： The presence of fecal loading in the cecum occurred in 97 patients with acute appendicitis, 13 patients with acute cholecystitis, 12 patients with acute inflammatory pelvic disease and 19 patients with nephrolithiasis. The sensitivity of this sign for appendicitis was 97% and its specificity to this disease was 85.3%. Its positive predictive value for appendicitis was 68.7%; however, its negative predictive value for appendicitis was 98.8%.CONCLUSION： The present study suggests that the presence of radiological images of fecal loading in the cecum may be a useful sign of acute appendicitis, and the absence of this sign probably excludes this disease.This is the first description of fecal loading as a radiological sign for acute appendicitis.展开更多
A cavernous hemangioma of the cecum is a rare vascular malformation but is clinically important because of the possibility of massive bleeding.We report a case of a large cavernous hemangioma with pericolic inf iltrat...A cavernous hemangioma of the cecum is a rare vascular malformation but is clinically important because of the possibility of massive bleeding.We report a case of a large cavernous hemangioma with pericolic inf iltration in the cecum which was removed successfully using minimally invasive surgery.展开更多
Acute lung injury(ALI)is a significant complication of sepsis,characterized by high morbidity,mortality,and poor prognosis.Neutrophils,as critical intrinsic immune cells in the lung,play a fundamental role in the deve...Acute lung injury(ALI)is a significant complication of sepsis,characterized by high morbidity,mortality,and poor prognosis.Neutrophils,as critical intrinsic immune cells in the lung,play a fundamental role in the development and progression of ALI.During ALI,neutrophils generate neutrophil extracellular traps(NETs),and excessive NETs can intensify inflammatory injury.Research indicates that Taohe Chengqi decoction(THCQD)can ameliorate sepsis-induced lung inflammation and modulate immune function.This study aimed to investigate the mechanisms by which THCQD improves ALI and its relationship with NETs in sepsis patients,seeking to provide novel perspectives and interventions for clinical treatment.The findings demonstrate that THCQD enhanced survival rates and reduced lung injury in the cecum ligation and puncture(CLP)-induced ALI mouse model.Furthermore,THCQD diminished neutrophil and macrophage infiltration,inflammatory responses,and the production of pro-inflammatory cytokines,including interleukin-1β(IL-1β),IL-6,and tumor necrosis factorα(TNF-α).Notably,subsequent experiments confirmed that THCQD inhibits NET formation both in vivo and in vitro.Moreover,THCQD significantly decreased the expression of peptidyl arginine deiminase 4(PAD4)protein,and molecular docking predicted that certain active compounds in THCQD could bind tightly to PAD4.PAD4 overexpression partially reversed THCQD’s inhibitory effects on PAD4.These findings strongly indicate that THCQD mitigates CLP-induced ALI by inhibiting PAD4-mediated NETs.展开更多
Perivascular epithelioid cell tumors （PEComas） are a group of rare mesenchymal neoplasms which composed of histologically and immunohistochemically distinctive perivascular epithelioid cells （PECs）. In recent year...Perivascular epithelioid cell tumors （PEComas） are a group of rare mesenchymal neoplasms which composed of histologically and immunohistochemically distinctive perivascular epithelioid cells （PECs）. In recent years, PEComas have been manily reported in liver, kidney, lung, uterus and adnexa,1 but rare in small or large intestine.2-6 Here, we describe a case of PEComa restricted in the cecal mucosa, which displayed histological characteristics of epithelioid clear cells.展开更多
基金supported by the National Natural Science Foundation of China(31790410,32160781)。
文摘The gastrointestinal tract is essential for food digestion,nutrient absorption,waste elimination,and microbial defense.Single-cell transcriptome profiling of the intestinal tract has greatly enriched our understanding of cellular diversity,functional heterogeneity,and their importance in intestinal tract development and disease.Although such profiling has been extensively conducted in humans and mice,the single-cell gene expression landscape of the pig cecum remains unexplored.Here,single-cell RNA sequencing was performed on 45572 cells obtained from seven cecal samples in pigs at four different developmental stages(days(D)30,42,150,and 730).Analysis revealed 12 major cell types and 38 subtypes,as well as their distinctive genes,transcription factors,and regulons,many of which were conserved in humans.An increase in the relative proportions of CD8^(+)T and Granzyme A(low expression)natural killer T cells(GZMA^(low)NKT)cells and a decrease in the relative proportions of epithelial stem cells,Tregs,RHEX^(+)T cells,and plasmacytoid dendritic cells(pDCs)were noted across the developmental stages.Moreover,the post-weaning period exhibited an up-regulation in mitochondrial genes,COX2 and ND2,as well as genes involved in immune activation in multiple cell types.Cell-cell crosstalk analysis indicated that IBP6^(+)fibroblasts were the main signal senders at D30,whereas IBP6^(−)fibroblasts assumed this role at the other stages.NKT cells established interactions with epithelial cells and IBP6^(+)fibroblasts in the D730 cecum through mediation of GZMA-F2RL1/F2RL2 pairs.This study provides valuable insights into cellular heterogeneity and function in the pig cecum at different development stages.
基金the Fundamental Research Funds for the Central Universities,China(XDJK2010C099)the Science Fundation for Young Scientists of Southwest University,China(QNRC200804)the Scientific Research Fund of Veterinary Medicine Department of Southwest University,China
文摘Toll-like receptors （TLRs） are a group of highly conserved molecules which initiate the innate immune response to pathogens by recognizing structural motifs of microbes. Understanding the changes in chicken Toll-like receptors （ChTLRs） and signal adaptors expression that occur with Eimeria tenella infection will help to elucidate the molecular basis of immune control of coccidiosis caused by Eimeria. The present study detected the dynamic changes in the expression of ChTLRs and associated signal adaptors in the spleen and cecum ofE. tenella-infected chickens during the early stage of infection. The results showed that the expression peak for ChTLRs, MyD88 and TRIF occurred at 12 h post-infection （hpi）, ChTLR3, ChTLRI 5 and MyD88 mRNA expression in the spleen ofE. tenella infected chickens were significantly higher （P〈0.05） than that of negative control chickens, and there were similar tendencies of these molecules expression in the cecum and spleen of E. tenella-infected chickens. The expression of MyD88 was upregnlated at four time points in the cecum of E. tenella-infected chickens. The results of this study indicate that ChTLR3, ChTLR15 and MyD88 play a role in young chickens infected with E. tenella.
基金Supported by Key Program for Science and Technology Research from the Education Department of Henan Province(13B230336)
文摘[ Objective] This study aimed to investigate the effects of crude extract of Poria cocos on intestinal smooth muscle contraction of rabbits in vitro and re- veal the related mechanism. [Method] With in vitro experimental method, using the tension of jejunal and cecal smooth muscle as an indicator, 3.75, 7.50, 15.00, and 22.5 g/L crude extract of P. cocos were added into Tyrede＇s solution of jejunum and cecum tissues of rabbits to observe the effects of crude extract of P. cocos on motion dynamics of jejunum and cecum of rabbits. [ Result] The addition of crude extract of P. cocos could inhibit the contraction of jejunal and cecal smooth muscle of rabbits in vitro, enhance contraction tension and relaxation tension, and reduce contraction amplitude. The effects were improved as the dose of crude extract of P. cocos increased, displaying a dose-effect relationship. [Condusion] This study provided theoretical basis for the clinical use of P. cocos.
基金Supported by Research funds from Chosun University,2009
文摘A granular cell tumor (GCT) is a benign neoplasm of unclear histogenesis that is generally believed to be of nerve sheath origin.GCT is not common and most often affects the tongue,skin and soft tissue,although it may occur anywhere in the body.We experienced a case of GCT that arose in the cecum of a 55-yearold man.The GCT was removed by laparoscopic resection.In addition to the tumor,endoscopic examination revealed the presence of a 5-mm-polyp in the descending colon and multiple tiny polyps in the sigmoid colon and rectum.Histological examination demonstrated a cecal tumor 1.5 cm × 1.0 cm × 0.7 cm with a hard consistency;in cut sections,mixed cells with yellowish and whitish portions were seen.The tumor was located between the mucosa and subserosa,and was composed of plump histiocyte-like tumor cells with abundant granular eosinophilic cytoplasm,which were immunoreactive for S-100 protein,vimentin,neuron-specific enolase,inhibin-α and calretinin.The tumor showed extensive hyalinization and focal dystrophic calcification.Immunohistochemical profiles did not confirm any particular cell type for the histogenetic origin of the GCT,including a nerve sheath origin.Extensive hyalinization and calcifi cation showing involution of tumor cells suggest benign clinical behavior of GCT.
文摘We report a case of 28-year-old woman presenting with small bowel obstruction. She had neither prior surgery nor delivery. An upright abdominal radiograph revealed several air-fluid levels in the small bowel in the midabdomen and the pelvic cavity. Computed tomography demonstrated a dilated small bowel loop in the Douglas＇s fossa, but no definite diagnosis could be made. Supportive therapy with draining the intestinal fluid by a long intestinal tube did not result in improvement, which suggested the possibility of a strangulated hernia. Exploratory laparotomy revealed mobile cecum and a 20-cm length of the ileum herniated into a defect of the right broad ligament. As a gangrenous change was recognized in the incarcerated bowel, its resection was carried out, followed by endto-end anastomosis and closure of the defects of the broad ligament. The postoperative course was uneventful. Intestinal obstruction is a very common cause for presentation to an emergency department, while internal hernia is a rare cause of obstruction. Among internal hernias, those through defects of the broad ligament are extremely rare. Defects of the broad ligament can be either congenital or secondary to surgery, pelvic inflammatory disease, and delivery trauma. In conclusion, we emphasize that hernia of the broad ligament should be added to the list of differential diagnosis for female patients presenting with an intestinal obstruction. Early diagnosis and surgical repair reduce morbidity and mortality from strangulation.
文摘A 27-year-old man with recurrent right lower quadrant pain was admitted to our hospital. Ultrasonography and computed tomography examination of the abdomen revealed a target sign in the ascending colon, which was compatible with the diagnosis of cecal intussusception. The intussusception was spontaneously resolved at that time, but it relapsed 6 mo later. The patient underwent a successful colonoscopic disinvagination; there was no evidence of neoplastic or inflammatory lesions in the colon and terminal ileum. The patient underwent laparoscopic surgery for recurring cecal intussusception. During laparoscopy, we observed an unfixed cecum on the posterior peritoneum(i.e. a mobile cecum). Thus, we performed laparoscopic appendectomy and cecopexy with a lateral peritoneal flap using a barbed wound suture device. The patient's post-operative course was uneventful, and he continued to do well without recurrence at 10 mo after surgery. Laparoscopic cecopexy using a barbed wound suture device is a simple and reliable procedure that can be the treatment of choice for recurrent cecal intussusception associated with a mobile cecum.
文摘AIM To study the counteraction of perforated cecum lesion using BPC 157 and nitric oxide(NO) system agents.METHODS Alongside with the agents' application(after 1 min, medication(/kg, 10 ml/2 min bath/rat) includes: BPC 157(10 μg), L-NAME(5 mg), L-arginine(100mg) alone or combined, and saline baths(controls)) on the rat perforate cecum injury, we continuously assessed the gross reappearance of the vessels(USB microcamera) quickly propagating toward the defect at the cecum surface, defect contraction, bleeding attenuation, MDA-and NO-levels in cecum tissue at 15 min, and severity of cecum lesions and adhesions at 1 and 7 d. RESULTS Post-injury, during/after a saline bath, the number of vessels was significantly reduced, the defect was slightly narrowed, bleeding was significant and MDA-levels increased and NO-levels decreased. BPC 157 bath: the vessel presentation was markedly increased, the defect was noticeably narrowed, the bleeding time was shortened and MDA-and NO-levels remained normal. L-NAME: reduced vessel presentation but not more than the control, did not change defect and shortened bleeding. L-arginine: exhibited less vessel reduction, did not change the defect and prolonged bleeding. In combination, mutual counteraction occurred(L-NAME + L-arginine) or the presentation was similar to that of BPC 157 rats(BPC 157 + L-NAME; BPC 157 + L-arginine; BPC 157 + L-NAME + L-arginine), except the defect did not change. Thereby at day 1 and 7, saline, L-NAME, L-arginine and L-NAME + L-arginine failed(defect was still open and large adhesions present). CONCLUSION The therapeutic effect was achieved with BPC 157 alone or in combination with L-NAME and L-arginine as it was able to consolidate the stimulating and inhibiting effects of the NO-system towards more effective healing recruiting vessels.
文摘AIM： Although the radiological teatures of acute appendicitis have been well documented, the value of plain radiography has not been fully appredated. The aim of this study was to determine the frequency of the association of acute appendicitis with images of fecal loading in the cecum,METHODS： Plain abdominal radiographs of 400 patients operated upon for acute appendicitis （n = 100）, acute cholecystitis （n = 100）, right acute pelvic inflammatory disease （n = 100） and right nephrolithiasis （n = 100） were assessed. The presence of fecal loading was recorded and the sensitivity and specificity of this sign for acute appendicitis were calculated.RESULTS： The presence of fecal loading in the cecum occurred in 97 patients with acute appendicitis, 13 patients with acute cholecystitis, 12 patients with acute inflammatory pelvic disease and 19 patients with nephrolithiasis. The sensitivity of this sign for appendicitis was 97% and its specificity to this disease was 85.3%. Its positive predictive value for appendicitis was 68.7%; however, its negative predictive value for appendicitis was 98.8%.CONCLUSION： The present study suggests that the presence of radiological images of fecal loading in the cecum may be a useful sign of acute appendicitis, and the absence of this sign probably excludes this disease.This is the first description of fecal loading as a radiological sign for acute appendicitis.
文摘A cavernous hemangioma of the cecum is a rare vascular malformation but is clinically important because of the possibility of massive bleeding.We report a case of a large cavernous hemangioma with pericolic inf iltration in the cecum which was removed successfully using minimally invasive surgery.
基金supporteded by the National Natural ScienceFoundation of China(Nos.82374183,82405092,82204991,82274246,and 82374341)the Planned Science TechnologyProjectofGuangzhouCity(Nos.2023A03J0419and2023A03J0420)+3 种基金the General Project of Natural Science Foundationof Guangdong Province(No.2023A1515011090)Hong KongScholars Program 2024(No.XJ2024005)the Basic and AppliedBasic Research Foundation of Guangdong Province(No.2021A151510809)the Project of Administration of TraditionalChinese Medicine of Guangdong Province of China(No.20223013).
文摘Acute lung injury(ALI)is a significant complication of sepsis,characterized by high morbidity,mortality,and poor prognosis.Neutrophils,as critical intrinsic immune cells in the lung,play a fundamental role in the development and progression of ALI.During ALI,neutrophils generate neutrophil extracellular traps(NETs),and excessive NETs can intensify inflammatory injury.Research indicates that Taohe Chengqi decoction(THCQD)can ameliorate sepsis-induced lung inflammation and modulate immune function.This study aimed to investigate the mechanisms by which THCQD improves ALI and its relationship with NETs in sepsis patients,seeking to provide novel perspectives and interventions for clinical treatment.The findings demonstrate that THCQD enhanced survival rates and reduced lung injury in the cecum ligation and puncture(CLP)-induced ALI mouse model.Furthermore,THCQD diminished neutrophil and macrophage infiltration,inflammatory responses,and the production of pro-inflammatory cytokines,including interleukin-1β(IL-1β),IL-6,and tumor necrosis factorα(TNF-α).Notably,subsequent experiments confirmed that THCQD inhibits NET formation both in vivo and in vitro.Moreover,THCQD significantly decreased the expression of peptidyl arginine deiminase 4(PAD4)protein,and molecular docking predicted that certain active compounds in THCQD could bind tightly to PAD4.PAD4 overexpression partially reversed THCQD’s inhibitory effects on PAD4.These findings strongly indicate that THCQD mitigates CLP-induced ALI by inhibiting PAD4-mediated NETs.
文摘Perivascular epithelioid cell tumors （PEComas） are a group of rare mesenchymal neoplasms which composed of histologically and immunohistochemically distinctive perivascular epithelioid cells （PECs）. In recent years, PEComas have been manily reported in liver, kidney, lung, uterus and adnexa,1 but rare in small or large intestine.2-6 Here, we describe a case of PEComa restricted in the cecal mucosa, which displayed histological characteristics of epithelioid clear cells.
