ObjectiveTo investigate the efficacy and safety of simplified diagnosis and treatment strategies and regimens in the treatment of patients with human immunodeficiency virus （HIV）/hepatitis C virus （HCV） co-infection. MethodsThis multicenter prospective real-world study was conducted among 198 patients with HIV/HCV co-infection who received hepatitis C treatment in 10 designated primary hospitals for hepatitis C in Yuxi， China from July 2023 to June 2024， and according to whether genotype detection was performed， they were divided into genotype detection group with 122 patients and non-genotype detection group with 76 patients. The patients were observed in terms of sustained virologic response at 12 weeks （SVR12）， safety， and liver biochemical parameters. Propensity score matching was used to match the two cohorts， using caliper matching （caliper value = 0.02） at a ratio of 1∶1. The independent-samples t test or the Wilcoxon signed-rank test was used for comparison of continuous data between two groups， and the chi-square test was used for comparison of categorical data between groups. ResultsAmong the 122 patients in the genotype detection group， 63.11% （77/122） had genotype 3， while the non-genotype detection group had 76 patients； both groups achieved an SVR12 rate of 100%. From baseline to 12 weeks after treatment， both groups had a significant increase in the serum level of albumin， significant reductions in the serum levels of total bilirubin， alanine aminotransferase， aspartate aminotransferase， and alpha-fetoprotein， and a significant reduction in FibroScan value （all P<0.05）. A total of 54 patients （27.27%） experienced at least one adverse reaction， and anemia was the most common adverse reaction （38 patients， 19.19%）， with an incidence rate of 50.00% （33/66） in patients with liver cirrhosis. HIV viral load remained <50 IU/mL before and after treatment， and there was no significant change in CD4⁺ T lymphocyte count after treatment （Z=-0.969， P=0.202）. Compared with the genotype detection group， the non-genotype detection group had a significantly shorter time from positive HCV RNA testing to treatment initiation （4±2 days vs 19±4 days， t=5.321， P<0.05） and significantly lower testing costs （618±97 yuan vs 789±129 yuan， t=3.661， P<0.05）. ConclusionFor patients with HIV/HCV co-infection， the simplified diagnosis and treatment strategies can achieve a relatively high SVR12 rate， improve biochemical indicators， and effectively reduce time cost and economic burden， with a favorable safety profile.

ObjectiveTo investigate the therapeutic effects and mechanism of Shenqi Dihuang decoction （SQDHD） on diabetic kidney disease （DKD）， with a focus on its impact on arachidonic acid-related ferroptosis. MethodsSixty C57BL/6 mice were allocated into a normal group （n=10） and a modeling group （n=50）， with 43 mice successfully modeled. The successfully modeled mice were further allocated into model， low-， medium-， and high-dose （4.68， 9.36， and 18.72 g·kg^-1， respectively） SQDHD， and dapagliflozin （0.13 mg·kg^-1） groups. The drug treatment groups were administrated with corresponding agents by gavage， and the normal and model groups were administrated with equal volumes of normal saline by gavage. An electronic balance and a glucometer were used to monitor the body weight and fasting blood glucose level from the tail tip， respectively. Serum creatinine （Scr） and blood urea nitrogen （BUN） levels were measured by enzyme-linked immunosorbent assay （ELISA）. Histopathological changes in the renal tissue were assessed by hematoxylin-eosin staining， Masson staining， and periodic acid-Schiff （PAS） staining. The fluorescence intensity of reactive oxygen species （ROS） in frozen sections was observed by an inverted fluorescence microscope to evaluate the levels of ferrous ions （Fe²⁺） and lipid peroxidation in the renal tissue. Immunofluorescence staining of glutathione peroxidase 4 （GPX4） and acyl-CoA synthetase long-chain family member 4 （ACSL4） in the renal tissue was performed to detect their localization and expression. Western blot was employed to assess the expression levels of key ferroptosis proteins such as GPX4 and cystine/glutamate antiporter （xCT）， as well as the arachidonic acid metabolic pathway-related proteins， including ACSL4， lysophosphatidylcholine acyltransferase 3 （LPCAT3）， and arachidonate 15-lipoxygenase （ALOX15）. Real-time PCR was employed to measure the mRNA levels of key ferroptosis proteins， including solute carrier family 7 member 11 （SLC7A11） and GPX4， as well as arachidonic acid metabolism-related factors （ACSL4， LPCAT3， and ALOX15） in the renal tissue. ResultsCompared with the normal group， DKD model mice exhibited a decrease in body weight （P<0.01）， increases in levels of blood glucose （P<0.01）， 24-hour urinary protein， Scr， and BUN （P<0.01）， along with severe pathological changes， such as mesangial cell proliferation， basement membrane thickening， tubular atrophy， and interstitial inflammatory cell infiltration. In addition， the modeling elevated the levels of Fe²⁺， MDA， LPO， and ROS （P<0.01）， lowered the GPX4 and xCT levels （P<0.01）， raised the ACSL4， LPCAT3， and ALOX15 levels （P<0.01）， down-regulated the mRNA levels of GPX4 and SLC7A11 （P<0.01）， and up-regulated the mRNA levels of ACSL4， LPCAT3， and ALOX15 （P<0.01） in the renal tissue. Compared with the model group， low-， medium-， and high-dose SQDHD groups and the dapagliflozin group showed an increase in body weight （P<0.01）， decreases in levels of blood glucose （P<0.01）， 24-hour urinary protein， and Scr （P<0.01）， alleviated pathological changes in glomeruli and tubules， and reduced degree of glomerular and tubular fibrosis. The high-dose SQDHD group and the dapagliflozin group showed reductions in Fe²⁺， MDA， LPO， and ROS levels （P<0.01）. The medium- and high-dose SQDHD groups and the dapagliflozin group exhibited increased levels of GPX4 and xCT （P<0.01）， decreased levels of ACSL4， LPCAT3， and ALOX15 （P<0.05， P<0.01）， and down-regulated mRNA levels of ACSL4， LPCAT3， and ALOX15 （P<0.01）. ConclusionSQDHD ameliorates DKD by inhibiting ferroptosis potentially by reducing iron ion levels， inhibiting lipid peroxidation， up-regulating GPX4 expression， and down-regulating ACSL4 expression. This study provides new insights and a theoretical basis for the treatment of DKD with traditional Chinese medicine and identifies potential targets for developing novel therapeutics for DKD.

ObjectiveTo investigate the therapeutic effects and mechanism of Shenqi Dihuang decoction （SQDHD） on diabetic kidney disease （DKD）， with a focus on its impact on arachidonic acid-related ferroptosis. MethodsSixty C57BL/6 mice were allocated into a normal group （n=10） and a modeling group （n=50）， with 43 mice successfully modeled. The successfully modeled mice were further allocated into model， low-， medium-， and high-dose （4.68， 9.36， and 18.72 g·kg^-1， respectively） SQDHD， and dapagliflozin （0.13 mg·kg^-1） groups. The drug treatment groups were administrated with corresponding agents by gavage， and the normal and model groups were administrated with equal volumes of normal saline by gavage. An electronic balance and a glucometer were used to monitor the body weight and fasting blood glucose level from the tail tip， respectively. Serum creatinine （Scr） and blood urea nitrogen （BUN） levels were measured by enzyme-linked immunosorbent assay （ELISA）. Histopathological changes in the renal tissue were assessed by hematoxylin-eosin staining， Masson staining， and periodic acid-Schiff （PAS） staining. The fluorescence intensity of reactive oxygen species （ROS） in frozen sections was observed by an inverted fluorescence microscope to evaluate the levels of ferrous ions （Fe²⁺） and lipid peroxidation in the renal tissue. Immunofluorescence staining of glutathione peroxidase 4 （GPX4） and acyl-CoA synthetase long-chain family member 4 （ACSL4） in the renal tissue was performed to detect their localization and expression. Western blot was employed to assess the expression levels of key ferroptosis proteins such as GPX4 and cystine/glutamate antiporter （xCT）， as well as the arachidonic acid metabolic pathway-related proteins， including ACSL4， lysophosphatidylcholine acyltransferase 3 （LPCAT3）， and arachidonate 15-lipoxygenase （ALOX15）. Real-time PCR was employed to measure the mRNA levels of key ferroptosis proteins， including solute carrier family 7 member 11 （SLC7A11） and GPX4， as well as arachidonic acid metabolism-related factors （ACSL4， LPCAT3， and ALOX15） in the renal tissue. ResultsCompared with the normal group， DKD model mice exhibited a decrease in body weight （P<0.01）， increases in levels of blood glucose （P<0.01）， 24-hour urinary protein， Scr， and BUN （P<0.01）， along with severe pathological changes， such as mesangial cell proliferation， basement membrane thickening， tubular atrophy， and interstitial inflammatory cell infiltration. In addition， the modeling elevated the levels of Fe²⁺， MDA， LPO， and ROS （P<0.01）， lowered the GPX4 and xCT levels （P<0.01）， raised the ACSL4， LPCAT3， and ALOX15 levels （P<0.01）， down-regulated the mRNA levels of GPX4 and SLC7A11 （P<0.01）， and up-regulated the mRNA levels of ACSL4， LPCAT3， and ALOX15 （P<0.01） in the renal tissue. Compared with the model group， low-， medium-， and high-dose SQDHD groups and the dapagliflozin group showed an increase in body weight （P<0.01）， decreases in levels of blood glucose （P<0.01）， 24-hour urinary protein， and Scr （P<0.01）， alleviated pathological changes in glomeruli and tubules， and reduced degree of glomerular and tubular fibrosis. The high-dose SQDHD group and the dapagliflozin group showed reductions in Fe²⁺， MDA， LPO， and ROS levels （P<0.01）. The medium- and high-dose SQDHD groups and the dapagliflozin group exhibited increased levels of GPX4 and xCT （P<0.01）， decreased levels of ACSL4， LPCAT3， and ALOX15 （P<0.05， P<0.01）， and down-regulated mRNA levels of ACSL4， LPCAT3， and ALOX15 （P<0.01）. ConclusionSQDHD ameliorates DKD by inhibiting ferroptosis potentially by reducing iron ion levels， inhibiting lipid peroxidation， up-regulating GPX4 expression， and down-regulating ACSL4 expression. This study provides new insights and a theoretical basis for the treatment of DKD with traditional Chinese medicine and identifies potential targets for developing novel therapeutics for DKD.

Objective:To investigate the effect and underlaying mechanism of aerobic exercise on aging-induced hepatic fi-brosis.Method:Thirty-two SPF grade C57BL/6J male mice were used,including 16 mice aged 2 months(young group)and 16 mice aged 19 months(senescent group).Both the aging group and the young group underwent one week of acclimatization.The animals were randomly divided into four groups:young control group(Y group),young exercise group(YE group),aging control group(A group)and aging exercise group(AE group),with 8 animals in each group.The experiment carried out exercise intervention in the way of running on the treadmill.All the exercise mice in each group received adaptive exercise with increasing load for one week,and then received formal aerobic exercise intervention for 12 weeks according to the protocol.HE,Mas-son and Sirius scarlet staining were used to observe the pathological morphology of liver tissue.The levels of Collagen Ⅰ and α-SMA in liver were observed by immunohistochemical staining.The mRNA expressions of miR-21,Collagen Ⅰ,α-smooth muscle actin(α-SMA),transforming growth factor-β1(TGF-β1)and SMAD7 in liver tissues were detected by q-PCR.Western Blot assay was used to detect the protein expressions of Collagen Ⅰ,α-SMA,CTGF,TGF-β1,TGF-β receptor Ⅱ(TβR-Ⅱ),Smad7 and P-Smad2/3 in liver tissues.Result:Compared with Y group,hepatocyte degeneration and fiber deposition were observed in group A.The mRNA and protein levels of Collagen Ⅰ,α-SMA,CTGF,TGF-β1,TβR-Ⅱ,P-SMAD2/3 and miR-21 in liver tissues were significantly increased(P<0.05),while the level of Smad7 was significantly decreased(P<0.05).After exercise intervention,liver tissue degeneration and fiber deposition were alleviated in the AE group,and the expressions of Collagen Ⅰ,α-SMA,CTGF,TGF-β1,TβR-Ⅱ,P-Smad2/3 and miR-21 in liver tissue were significantly decreased(P<0.05),the level of Smad7 was significantly increased(P<0.05).Conclusion:Aerobic exercise can effectively improve age-induced hepatic fibrosis.The underlying mechanism may be related to inhibiting the overexpression of TGF-β1,reducing the expression of TGF-β1/Smad signaling pathway related molecules,inhibiting miR-21,improving the activity of Smad7,and reducing the deposition of liver cell fibers.

Objective:To understand the awareness of influenza and influenza vaccine, influenza incidence, influenza vaccination status and intention and related factors in primary and secondary school teachers.Methods:Cross-sectional study design and stratified random sampling method were used to select 5 teachers from each of 51 primary schools and 40 middle schools in a district of Beijing from April 17 to 21, 2024. A questionnaire survey was conducted in the selected teachers with an estimated sample size of 1 040. The survey collected the information about their demographic characteristics, awareness of influenza and influenza vaccine, influenza incidence, influenza vaccination status and intention. Multivariate logistic regression model was used to analyze the factors related to influenza vaccination status and intention.Results:In the 975 primary and secondary school teachers, the awareness of susceptibility and severity of influenza and the benefits of influenza vaccination were high. In terms of safety of influenza vaccine, 48.00% (468/975) of the teachers believed that adverse reaction would occur after the vaccination. Influenza like illness occurred in 41.13% (401/975) of the teachers during 2023-2024, and in these teachers, 40.15% (161/401) asked for leave from work due to illness, 40.90% (164/401) sought medical care and 32.93% (54/164) were influenza virus positive. In the 975 teachers, 13.95% (136/975) were vaccinated against influenza during 2023-2024 and 34.46% (336/975) were willing to be vaccinated against influenza during 2024-2025. Multivariate logistic regression analysis showed that being teacher in charge of a class (a OR=1.58, 95% CI: 1.06-2.35), believing that influenza vaccination could effectively prevent influenza (a OR=1.99, 95% CI: 1.05-3.80), believing that teachers' vaccination could improve students' willingness to be vaccinated (a OR=1.98, 95% CI: 1.12-3.50) were the positive factors for teachers' vaccination, and worrying about adverse reactions after the vaccination (a OR=0.52, 95% CI: 0.34-0.80) was the negative factor. Doctors' recommendation (a OR=2.62, 95% CI: 1.41-4.86) and free influenza vaccination (a OR=10.26, 95% CI: 5.17-20.39) were positively correlated with teachers' intention to influenza vaccination. Conclusions:Primary and secondary school teachers in a district of Beijing had high awareness of influenza and influenza vaccine, but their awareness of influenza vaccine safety should be improved. The incidence of influenza-related infection was high in the primary and secondary school teachers. The influenza vaccination rate was low and the willingness to receive influenza vaccination in following year was not strong. For the better prevention and control of influenza in schools, it is necessary to strengthen the health education in primary and secondary school teachers to improve their awareness of influenza vaccine safety and vaccination rate.

Objective:To understand the awareness of influenza and influenza vaccine, influenza incidence, influenza vaccination status and intention and related factors in primary and secondary school teachers.Methods:Cross-sectional study design and stratified random sampling method were used to select 5 teachers from each of 51 primary schools and 40 middle schools in a district of Beijing from April 17 to 21, 2024. A questionnaire survey was conducted in the selected teachers with an estimated sample size of 1 040. The survey collected the information about their demographic characteristics, awareness of influenza and influenza vaccine, influenza incidence, influenza vaccination status and intention. Multivariate logistic regression model was used to analyze the factors related to influenza vaccination status and intention.Results:In the 975 primary and secondary school teachers, the awareness of susceptibility and severity of influenza and the benefits of influenza vaccination were high. In terms of safety of influenza vaccine, 48.00% (468/975) of the teachers believed that adverse reaction would occur after the vaccination. Influenza like illness occurred in 41.13% (401/975) of the teachers during 2023-2024, and in these teachers, 40.15% (161/401) asked for leave from work due to illness, 40.90% (164/401) sought medical care and 32.93% (54/164) were influenza virus positive. In the 975 teachers, 13.95% (136/975) were vaccinated against influenza during 2023-2024 and 34.46% (336/975) were willing to be vaccinated against influenza during 2024-2025. Multivariate logistic regression analysis showed that being teacher in charge of a class (a OR=1.58, 95% CI: 1.06-2.35), believing that influenza vaccination could effectively prevent influenza (a OR=1.99, 95% CI: 1.05-3.80), believing that teachers' vaccination could improve students' willingness to be vaccinated (a OR=1.98, 95% CI: 1.12-3.50) were the positive factors for teachers' vaccination, and worrying about adverse reactions after the vaccination (a OR=0.52, 95% CI: 0.34-0.80) was the negative factor. Doctors' recommendation (a OR=2.62, 95% CI: 1.41-4.86) and free influenza vaccination (a OR=10.26, 95% CI: 5.17-20.39) were positively correlated with teachers' intention to influenza vaccination. Conclusions:Primary and secondary school teachers in a district of Beijing had high awareness of influenza and influenza vaccine, but their awareness of influenza vaccine safety should be improved. The incidence of influenza-related infection was high in the primary and secondary school teachers. The influenza vaccination rate was low and the willingness to receive influenza vaccination in following year was not strong. For the better prevention and control of influenza in schools, it is necessary to strengthen the health education in primary and secondary school teachers to improve their awareness of influenza vaccine safety and vaccination rate.

Objective:To observe the effectiveness of extracorporeal counterpulsation therapy in patients with heart failure in ischaemic cardiomyopathy.Methods:A total of 112 patients with ischemic cardiomyopathy and heart failure admitted to the Second Affiliated Hospital of Xingtai Medical College from August 2020 to June 2023 were prospectively selected and divided into two groups by random number table method. The control group was treated with conventional drugs and conventional cardiac rehabilitation program, and the observation group was combined with external counterbeating therapy on the basis of the control group. The levels of N-terminal B-type brain natriuretic peptide (NTproBNP), soluble growth stimulation-expression gene-2 protein (sST2), neutrophil gelatinase-associated lipid carrier protein (NGAL), galactin-3 (Gal-3), cardiopulmonary exercise test (CPET) parameters and cardiac ultrasound indexes were compared between the two groups before and after treatment. The curative effect and the rate of re-hospitalization within 6 months were compared between the two groups.Results:After treatment, the levels of NTproBNP, sST2, NGAL and Gal-3 in the observation group were lower than those in the control group: (1941.36 ± 312.59) ng/L vs. (2674.22 ± 404.64) ng/L, (44.78 ± 3.97) ng/L vs. (52.45 ± 4.13) ng/L, (22.63 ± 3.65) μg/L vs. (26.41 ± 3.77) μg/L, (4.63 ± 1.29) ng/L vs. (6.11 ± 1.78) ng/L, there were statistical differences ( P<0.05); the maximum kilogram oxygen uptake (VO 2max/kg), maximum kilogram oxygen uptake as a percentage of predicted value (VO 2max/kg%pred), maximum minute ventilation as a percentage of predicted value (VEmax%pred) in the observation group were higher than those in the control group: (22.41 ± 2.23) ml/(min·kg) vs. (21.35 ± 2.09) ml/(min·kg), (83.79 ± 11.04)% vs. (78.74 ± 10.14)%, (88.95 ± 12.74)% vs. (75.45 ± 11.14)%, there were statistical differences ( P<0.05 or <0.01); the left ventricular ejection fraction (LVEF) in the observation group was higher than that in the control group and the left ventricular posterior wall thickness (LVPWT) and left ventricular posterior wall end-systolic thickness (PWS) were lower than those in the control group: (50.12 ± 3.87)% vs. (48.63 ± 3.74)%, (8.77 ± 1.58) mm vs. (9.63 ± 1.97) mm, (9.34 ± 1.54) mm vs. (10.14 ± 1.79) mm, there were statistical differences ( P<0.05). There was no statistical difference in the total effective rate between the two groups ( P>0.05). The patient readmission rate within 6 months of follow-up in the observation group was lower than that in the control group: 5.45%(3/55) vs. 20.00%(11/55), there was statistical difference( χ2 = 5.24, P<0.05). Conclusions:Extracorporeal counterpulsation therapy for the treatment of heart failure in ischaemic cardiomyopathy can improve the cardiorespiratory function, reduce the expression of NTproBNP, sST2, NGAL and Gal-3, and decrease the patient readmission rate.

Objective:This study aimed to systematically evaluate the efficacy of glucagon-like peptide-1(GLP-1) receptor agonists and multi-target analogs on weight reduction and cardiometabolic outcomes in non-diabetic individuals with obesity, and to compare the efficacy and safety across different GLP-1 receptor agonists.Methods:Randomized controlled trials(RCTs) published between January 2000 and March 2025 were identified through a systematic search of CNKI, Wanfang, Web of Science, PubMed, and Cochrane databases. Two reviewers independently screened the studies, extracted data, and assessed methodological quality. Meta-analysis was performed using RevMan 5.4.1 software. Results:A total of 16 RCTs involving 11 032 non-diabetic individuals with obesity were included. Meta-analysis showed that GLP-1 receptor agonists significantly reduced body weight(ΔWeight=-8.71 kg, 95% CI -10.68 to -6.74, P<0.001) and BMI(ΔBMI=-3.01 kg/m 2, 95% CI -3.77 to -2.25, P<0.001), as well as improved systolic blood pressure(ΔSBP=-4.13 mmHg, 1 mmHg=0.133 kPa, 95% CI -4.87 to -3.39, I2=60%) and diastolic blood pressure(ΔDBP=-1.39 mmHg, 95% CI -2.32 to -0.46, I2=95%). Tirzepatide showed the most pronounced effects on both weight and blood pressure reduction. In addition, GLP-1 receptor agonists significantly lowered LDL-C, TC, and TG, while moderately increasing HDL-C levels. In terms of safety, GLP-1 receptor agonists were associated with an increased risk of gastrointestinal adverse events, but did not significantly increase the risk of hypoglycemia. Conclusion:GLP-1 receptor agonists are effective in reducing weight, BMI, and blood pressure, and in improving lipid profiles in non-diabetic individuals with obesity. However, gastrointestinal side effects should be closely monitored. Given the variability in efficacy and safety among various GLP-1 receptor agonists, personalized treatment approaches are recommended.

Objective:To establish a quantitative diagnostic standard for Crohn's disease with dampness syndrome based on clinical data using a disease syndrome combination model and conduct bidirectional validation.Methods:256 patients with Crohn's disease from the Department of Spleen and Stomach Diseases at Guangdong Provincial Hospital of Chinese Medicine, the Department of Gastroenterology at the Sixth Affiliated Hospital of Sun Yat-sen University, and the Outpatient Department of Guangdong Provincial Hospital of Chinese Medicine from October 2021 to January 2022 were selected as the observation objects. They were divided into an operation group of 205 patients and a verification group of 51 patients in an 8:2 ratio using a random number table method. The frequency advantage method, χ2 test, and binary logistic regression analysis were used to screen for relevant standard factors. The conditional probability method was used to assign scores to relevant items, and the maximum likelihood method was used to determine the quantitative diagnostic threshold. A quantitative diagnostic standard for Crohn's disease with dampness syndrome based on disease syndrome combination was established, and it was retrospectively analyzed and prospectively verified. Results:On the basis of the 20 candidate quantitative diagnostic criteria items for Crohn's disease dampness syndrome, binary logistic regression analysis was performed to calculate the OR values between each item. The quantitative diagnostic criteria for Crohn's disease with dampness syndrome included tongue coating greasiness (7 points), body heaviness (13 points), waist and knee soreness (8 points), head weight (9 points), bland mouth (6 points), anal heaviness (8 points), uncomfortable bowel movements (8 points), and sticky stools (7 points), with a quantitative diagnostic threshold of 11. Conclusion:The scoring of relevant items in the quantitative diagnostic criteria for Crohn's disease with dampness syndrome is reasonable and has good diagnostic value, which can provide reference for further quantitative research on Crohn's disease syndromes.

Objective:To investigate the effect and underlaying mechanism of aerobic exercise on aging-induced hepatic fi-brosis.Method:Thirty-two SPF grade C57BL/6J male mice were used,including 16 mice aged 2 months(young group)and 16 mice aged 19 months(senescent group).Both the aging group and the young group underwent one week of acclimatization.The animals were randomly divided into four groups:young control group(Y group),young exercise group(YE group),aging control group(A group)and aging exercise group(AE group),with 8 animals in each group.The experiment carried out exercise intervention in the way of running on the treadmill.All the exercise mice in each group received adaptive exercise with increasing load for one week,and then received formal aerobic exercise intervention for 12 weeks according to the protocol.HE,Mas-son and Sirius scarlet staining were used to observe the pathological morphology of liver tissue.The levels of Collagen Ⅰ and α-SMA in liver were observed by immunohistochemical staining.The mRNA expressions of miR-21,Collagen Ⅰ,α-smooth muscle actin(α-SMA),transforming growth factor-β1(TGF-β1)and SMAD7 in liver tissues were detected by q-PCR.Western Blot assay was used to detect the protein expressions of Collagen Ⅰ,α-SMA,CTGF,TGF-β1,TGF-β receptor Ⅱ(TβR-Ⅱ),Smad7 and P-Smad2/3 in liver tissues.Result:Compared with Y group,hepatocyte degeneration and fiber deposition were observed in group A.The mRNA and protein levels of Collagen Ⅰ,α-SMA,CTGF,TGF-β1,TβR-Ⅱ,P-SMAD2/3 and miR-21 in liver tissues were significantly increased(P<0.05),while the level of Smad7 was significantly decreased(P<0.05).After exercise intervention,liver tissue degeneration and fiber deposition were alleviated in the AE group,and the expressions of Collagen Ⅰ,α-SMA,CTGF,TGF-β1,TβR-Ⅱ,P-Smad2/3 and miR-21 in liver tissue were significantly decreased(P<0.05),the level of Smad7 was significantly increased(P<0.05).Conclusion:Aerobic exercise can effectively improve age-induced hepatic fibrosis.The underlying mechanism may be related to inhibiting the overexpression of TGF-β1,reducing the expression of TGF-β1/Smad signaling pathway related molecules,inhibiting miR-21,improving the activity of Smad7,and reducing the deposition of liver cell fibers.