BACKGROUND:Understanding the characteristics and influencing factors of the gut microbiota in athletes can help determine the optimal gut microbial composition for relevant sport events.Further investigation in this area could provide important insights for improving athletic performance and recovery as well as developing personalized nutrition prescriptions.OBJECTIVE:To summarize the characteristics of gut microbiota in athletes,and to elucidate the important factors influencing the gut microbiota characteristics of athletes from the perspectives of exercise training and dietary intake.METHODS:A literature search was conducted using the PubMed,ScienceDirect,CNKI,WanFang and VIP databases for publications from 2004 to 2024.The search terms included"microbiota,microbiome,athlete,exercise,training,diet,nutrition,dietary fiber,protein,ketogenic,fat"in English and Chinese.After excluding studies of poor quality and irrelevant content,a total of 65 articles were included for review and analysis.RESULTS AND CONCLUSION:(1)The gut microbiota of elite athletes differs from that of the general population,characterized by increased α-diversity,elevated Firmicutes/Bacteroidetes ratio,increased abundance of beneficial bacteria,and enrichment of functional pathways contributing to athletic performance.(2)The type of sport and training load are closely related to the species structure and functional expression of the gut microbiota in athletes.(3)The bidirectional communication between the host and gut microbiota mediated by metabolites is an important mechanism by which exercise influences the gut microbiota.(4)Phase training typically induces adaptive changes in the gut microbiota,and alterations in the structure or function of the microbiota have lasting effects.(5)The type,quantity,and combination of macronutrients intake can significantly influence the structure and function of the gut microbiota,and interact synergistically or antagonistically with exercise training.(6)In the future,it is important to continue the exploration of the gut microbiota in athletes,clarify causal relationships,and establish new targets for exercise training interventions.

BACKGROUND:Understanding the characteristics and influencing factors of the gut microbiota in athletes can help determine the optimal gut microbial composition for relevant sport events.Further investigation in this area could provide important insights for improving athletic performance and recovery as well as developing personalized nutrition prescriptions.OBJECTIVE:To summarize the characteristics of gut microbiota in athletes,and to elucidate the important factors influencing the gut microbiota characteristics of athletes from the perspectives of exercise training and dietary intake.METHODS:A literature search was conducted using the PubMed,ScienceDirect,CNKI,WanFang and VIP databases for publications from 2004 to 2024.The search terms included"microbiota,microbiome,athlete,exercise,training,diet,nutrition,dietary fiber,protein,ketogenic,fat"in English and Chinese.After excluding studies of poor quality and irrelevant content,a total of 65 articles were included for review and analysis.RESULTS AND CONCLUSION:(1)The gut microbiota of elite athletes differs from that of the general population,characterized by increased α-diversity,elevated Firmicutes/Bacteroidetes ratio,increased abundance of beneficial bacteria,and enrichment of functional pathways contributing to athletic performance.(2)The type of sport and training load are closely related to the species structure and functional expression of the gut microbiota in athletes.(3)The bidirectional communication between the host and gut microbiota mediated by metabolites is an important mechanism by which exercise influences the gut microbiota.(4)Phase training typically induces adaptive changes in the gut microbiota,and alterations in the structure or function of the microbiota have lasting effects.(5)The type,quantity,and combination of macronutrients intake can significantly influence the structure and function of the gut microbiota,and interact synergistically or antagonistically with exercise training.(6)In the future,it is important to continue the exploration of the gut microbiota in athletes,clarify causal relationships,and establish new targets for exercise training interventions.

Objective To explore the feasibility of peritoneal dialysis catheter placement assisted by flexible ureteroscope.Methods A retrospective analysis was conducted on clinical data of 54 cases of end-stage renal disease receiving peritoneal dialysis catheter placement from May 2019 to March 2023.The placement method was chosen by the patient.In the conventional group,23 cases were guided by a metal guide wire for insertion of the peritoneal dialysis catheter,while in the flexible ureteroscope group,31 cases were guided by flexible ureteroscope instead of guide wire for insertion of the peritoneal dialysis catheter.The success rate of catheterization,surgical time,use of postoperative analgesic,complications related to peritoneal dialysis catheter,and postoperative creatinine decrease were compared between the two groups.Results The catheter placement was successfully performed in both groups.The total incidence of complications related to peritoneal dialysis catheter in the flexible ureteroscope group was lower than that in the conventional group[6.5%(2/31)vs.30.4%(7/23),χ2 =3.878,P =0.049].Between the conventional group and the flexible ureteroscope group,there were no statistically significant differences in the surgical time,postoperative analgesic usage,and the decrease of creatinine at 2 weeks after surgery(P>0.05).The median postoperative follow-up period was10 months(range,3-24 months)in the two groups,and there were no complications such as peritoneal leakage,intestinal perforation,or intraperitoneal bleeding.Conclusion The placement of peritoneal dialysis catheter guided by the flexible ureteroscope instead of metal guide wire is a safe,visible,and accurate method,which can reduce complications related to peritoneal dialysis catheter,and detect and manage comorbidities in the abdominal cavity.

Animals ; SARS-CoV-2 ; Antibodies, Neutralizing ; Macaca mulatta ; COVID-19/prevention & control* ; Antibodies, Viral ; Vaccines

Objective Toexplorethecorrelationanalysisofmammographyandclinicalcharacteristicsassociatedwiththerecurrence ofearlystageoftripleGnegativebreastcancer(TNBC).Methods Thedataofmammographyandclinicalcharacteristicsof231TNBC patientsfromJanuary2009to October2017 wereretrospectivelyanalyzed,andthenthedifferencesofmammographyandclinical characteristicswerecomparedbetweenthepatientswithrecurrence(n＝64)andthosewithoutrecurrence(n＝167).Results Compared withthepatientswithoutrecurrence,thepresenceoffamilyhistoryinpatientswithrecurrencewashigherthanthosewithoutrecurrence (12.5%vs3.6%,P＜0.05).Thehistologicalgradesofthepatientswithrecurrenceweremainlyshowedasgrade2(6.3%)and3(93.7%), andthehistologicalgradeinpatientswithrecurrencewashigherthanthosewithoutrecurrence(P＜0.05).Themammographicfindingsin TNBCshowedthatthepatientswithrecurrenceweremorelikelytohavedensebreasttissue(84.4%),axillarylymphnodesinvasion (53.1%)andlowercalcification(12.5%)(P＜0.05).Multivariatelogisticregressionanalysisshowedthatthefamilyhistoryofbreast cancer(P＝0.01,OR＝2.54),histologicalgradeof2(P＝0.01,OR＝2.23)and3(P＜0.001,OR＝3.79),mammographicdensity breasttissue(P＝0.02,OR＝2.32),calcification(P＝0.02,OR＝0.45),andaxillarylymphnodesinvasion(P＝0.03,OR＝1.75)were statisticallysignificancewithTNBCrecurrence.Conclusion Thefamilyhistory,histologicalgrade,thepresenceofdensebreasttissue andaxillarylymphnodesinvasionsatmammographywereassociatedwiththeincreasedriskofrecurrenceinTNBC,whilethepresenceof calcificationwasrelatedtothelowerriskofrecurrenceinTNBC.