1.Research of medication rules and multi-pathway mechanism of action in the treatment of vitiligo by traditional Chinese medicine compound patent
Xiaoyi DONG ; Deyou JIANG ; Zeyun WANG ; Yuxi MENG ; Zongfu MIN ; Xuan ZHANG ; Shaoying WANG ; Yuanhong WANG
Chinese Journal of Pharmacoepidemiology 2024;33(9):993-1005
Objective To explore the medication rules and mechanism of action of traditional Chinese medicine compound patent formulas for vitiligo,and provide ideas for the development and the patent declaration work of new Chinese medicines for vitiligo.Methods China Patent Publication Bulletin website,National Knowledge Infrastructure Database,Patent Information Service Platform of China Intellectual Property Right Net(CNIPR),and Baiten Patent Platform were used to search for the patents of traditional Chinese medicine compound formulas for vitiligo from the establishment of the databases to 30th September,2023.Excel software and Traditional Chinese Medicine Inheritance Computing Platform(TCMICS V3.0)were used to establish a database of compound formulas,and carry out the statistics of frequency,association rules and clustering analysis of the formulas for internal and external prescriptions.The target and mechanism of action of the internal prescriptions of core high-frequency Traditional Chinese Medicine group for the treatment of vitiligo were further explored by Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP),Symptom Mapping(Symmap),The Human Gene Database(Genecards),UniversalProtein(UniProt),STRING,Pharmaceutical DataBase(PDB)and other databases as well as software such as R Studio 4.2.2 and Cytoscape 3.9.1,and AutoDock Vina was used for molecular docking validation.Results The internal formulas included 335 patents and the external formulas included 189 patents.The rules of internal and external use are similar.The high-frequency traditional Chinese medicines are Tribuli Fructus,Psoraleae Fructus,Angelicae sinensis,Radix Polygoni Multiflori,Carthami Flos,Angelica dahurica,etc.;the key efficacies of the medicines are based on tonifying the deficiency,activating blood circulation and removing blood stasis;and the properties of the Chinese medicines are the nature of warmth,coldness and flatness,sweetness,bitterness,pungency and attribution to the liver,the spleen,the heart and the kidneys.Commonly used oral medicine pairs are Chuanxiong rhizome-Angelica,Astragalus-Angelica,etc.,high-frequency pairs of external medicines are Fructus mume-Psoraleae fructus,cuscuta-Psoraleae fructus,etc.;internal and external clustering of the core drugs are Psoraleae fructus,Tribuli Fructus,Angelica,Polygonum multiflorum,Angelica dahurica,Safflower,and other high-frequency medicines.The key targets of internal patents for the treatment of vitiligo are genes such as albumin,protein kinase B1,cystatinase 3,etc.The main active ingredients of the internal grouping for the treatment of vitiligo may be quercetin,kaempferol,luteolin,etc.,and the therapeutic mechanism may be related to the end products of glycosylation/receptor for glycosylation end products,tumour necrosis factor signalling pathway,phosphatidylinositol 3-kinase/protein kinase B and other signalling pathways,and involved in the process of blood lipids and atherosclerosis,human cytomegalovirus infection.The molecular docking results confirmed the docking activity of the herbal components with key receptor proteins.Conclusion This study reveals the similarity between the internal and external patented formulas of vitiligo in terms of medication,flavour,and meridian,suggesting that the pathways and indexes such as albumin,interleukin,and tumour necrosis factor of vitiligo patients can be improved by tonifying the liver and kidney,activating blood circulation and removing blood stasis,which also provides a reference for the research and development of new medicines for vitiligo,patent protection,and the use of clinical prescriptions.
2.Analysis of podocyte projects funded by National Natural Science Foundation of China from 2011 to 2021
China Modern Doctor 2024;62(24):36-40
Objective Analyzed the funding status and development trend of podocyte projects funded by National Natural Science Foundation of China(NSFC)from 2011 to 2021,and provided reference for researchers to apply for NSFC projects and scientific researching in the future.Methods Used the offical website of NSFC and LetPub database to obtain the podocyte research projects funded by NSFC from 2011 to 2021,and analyzed the key informations such as project fundings,funding types and discipline classifications.Results A total of 411 podocyte related projects were funded by NSFC from 2011 to 2021.Among them,Youth Science Foundation Projects and General Programs were the main types of fundings;Shanghai Jiao Tong University and Shandong University undertook more projects.The subject classification was mainly secondary kidney disease.The main diseases studied was diabetic nephropathy.The research projects mainly focused on autophagy,endoplasmic reticulum stress and mitochondrial pathway to explore the mechanism of podocyte injury and intervention.Conclusion In recent years,NSFC has paid more attention to podocyte related research,which provides a reference for the determination of related research directions in this field.
3.To investigate the efficacy of pentoxifylline sequential therapy combined with rasagiline and levodopa and benserazide in the treatment of Parkinson disease with fluctuations in elderly patients
Shaoying WANG ; Jie GAO ; Ming LIU ; Ning LI ; Lidi WANG ; Lijie LIU ; Qingqing WANG ; Jingbing LI ; Cuiqing LIU
Chinese Journal of Postgraduates of Medicine 2024;47(5):409-416
Objective:To investigate the clinical efficacy of pentoxifylline sequential therapy combined with rasagiline and levodopa in the treatment of elderly patients with symptoms of Parkinson disease (PD), and the influence on hemorheology and serum Toll-like receptor 4 (TLR4) signaling pathway downstream related inflammatory factors.Methods:A prospective study method was used to select 90 elderly patients with PD with fluctuating symptoms who were admitted to the Eighth People′s Hospital of Hebei Province from June 2021 to October 2022 as research objects. The patients were divided into observation group and control group with 45 cases in each group according to random number table method. The observation group was treated with pentoxifylline sequential therapy combined with rasagiline and levodopa. The control group was treated with rasagiline combined with levodopa. The clinical efficacy of the two groups was compared. The unified Parkinson disease rating scale (UPDRS), Montreal cognitive assessment scale (MoCA), Berg balance scale (BBS) and 39-item Parkinson disease quality of life questionnaire (PDQ-39) were scored before and after treatment. Hemorheology indexes and serum levels of related inflammatory factors downstream of TLR4 signaling pathway, including whole blood high viscosity (HBV), whole blood low shear viscosity (LBV), plasma viscosity (PV), fibrinogen (FIB); TLR4, interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF) -α, were detected before and after treatment in both groups. The adverse reactions of the two groups were compared.Results:The total effective rate in observation group was significantly higher than that in control group: 93.33% (42/45) vs. 77.78% (35/45), and there was statistical difference ( P<0.05). After treatment, the UPDRS mental activity and emotional disorders, daily living ability, motor function, motor complications scores and PDQ-39 score of the two groups were significantly lower than before treatment, the MoCA and BBS scores were significantly higher than before treatment, and the improvement was more significant in the observation group, there were statistical differences ( P<0.05). After treatment, HBV, LBV, PV and FIB in the observation group were significantly decreased compared with those before treatment: (6.52 ± 0.92) mPa·s vs. (7.25 ± 1.24) mPa·s, (11.45 ± 1.24) mPa·s vs. (14.13 ± 1.64) mPa·s, (1.55 ± 0.17) mPa·s vs. (1.88 ± 0.22) mPa·s, (3.25 ± 0.47) g/L vs. (3.82 ± 0.52) g/L, and there were statistical differences ( P<0.05). There were no significant differences in hemorheology indexes of control group before and after treatment ( P>0.05). After treatment, serum levels of TLR4, IL-1β, IL-6 and TNF-α in both groups were significantly decreased compared with those before treatment, and the indexes in observation group were significantly lower than those in control group: (2.07 ± 0.18) ng/L vs. (2.58 ± 0.21) ng/L, (1.42 ± 0.17) ng/L vs. (2.28 ± 0.25) ng/L, (1.56 ± 0.22) ng/L vs. (2.42 ± 0.28) ng/L, (46.31 ± 3.17) ng/L vs. (54.34 ± 3.65) ng/L, and the differences were statistically significant ( P<0.05). There was no significant difference in the incidence of adverse reactions between the two groups ( P>0.05). Conclusions:Pentoxifylline sequential therapy combined with rasagiline and levodopa can effectively improve the hemorheology of elderly patients with PD accompanied by symptom fluctuations, reduce the levels of related inflammatory factors downstream of serum TLR4 signaling pathway, and improve clinical efficacy.
4.Clinical Diseases Responding Specifically to Traditional Chinese Medicine:Chronic Prostatitis
Zhan QIN ; Mei MO ; Chaoba HE ; Liguo GENG ; Bin WANG ; Jisheng WANG ; Kecheng LI ; Nianwen HUANG ; Zhiming HONG ; Shaoying YUAN ; Xiaoxiao ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(24):152-158
Chronic prostatitis is a common and frequently occurring disease in male clinics. Due to the diverse symptoms, complex etiology, unclear mechanisms, and recurrent episodes of chronic prostatitis, Western medicine often faces the challenge of limited treatment options and unsatisfactory outcomes. In order to fully leverage the unique advantages of traditional Chinese medicine (TCM) in the treatment of chronic prostatitis, the China Association of Chinese Medicine organized a discussion among experts from the fields of TCM urology, Western urology, and related pharmacy. The experts focused on the advancements in the understanding of chronic prostatitis in modern medicine, various theories on the etiology, pathogenesis, and treatment of chronic prostatitis in TCM, entry points from interdisciplinary fields, the role and advantages of TCM in the comprehensive management of chronic prostatitis, and research into mechanisms related to chronic prostatitis. After discussions, the experts concluded that chronic prostatitis is one of the diseases where TCM has a distinct advantage. TCM can effectively improve the clinical syndromes of chronic prostatitis, including urinary issues, social psychology, organ specificity, infection, nervous system problems, pain and discomfort, sexual dysfunction, etc., and can enhance the quality of life. For patients with chronic prostatitis who cannot tolerate or may not accept the adverse effects of Western medicine, as well as for those with non-inflammatory chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS), those with pain as the primary symptom, those with urinary tract symptoms, those with coexisting anxiety and depression, and those with abnormal semen liquefaction, TCM-based treatment can be the main approach. Currently, the optimal diagnosis and treatment strategy for chronic prostatitis has not yet been established, and further research from perspectives such as clinical epidemiology, evidence-based medicine, and molecular biology is needed. Both TCM and Western medicine should integrate their respective strengths, clarify the role and advantages of TCM interventions based on mutual reference, and improve the diagnosis and treatment standards for chronic prostatitis in China.
5.Fatigue status and influencing factors of heavy-duty commercial truck drivers
Jianjiang ZHANG ; Shaoying WANG ; Siping CHEN ; Jianling LIU
Journal of Environmental and Occupational Medicine 2024;41(7):789-795
Background Fatigue driving is an important cause of road traffic accidents in modern society, and the fatigue condition of heavy-duty commercial truck drivers has attracted widespread attention. Research on the fatigue status and influencing factors of heavy-duty commercial truck drivers in China is relatively rare at present. Objective To analyze the main characteristics of fatigue among heavy-duty commercial truck drivers and the impacts of factors such as working hours, insomnia, and occupational burnout on their fatigue status. Methods Using cluster sampling method, a cross-sectional study was conducted from July to August 2023, enrolling heavy-duty commercial truck drivers in long-distance freight logistics markets (stations) located in three administrative regions of W City, Xinjiang Uygur Autonomous Region. A self-designed questionnaire was used to collect demographic and occupational characteristics of heavy-duty commercial truck drivers, and the Chinese versions of Fatigue Scale-14 (FS-14), Athens Insomnia Scale (AIS), and Maslach Burnout Inventory General Survey (MBI-GS) were used to evaluate their fatigue, insomnia, and occupational burnout status, respectively. Mann-Whitney U test and Kruskal-Walls H test were used to compare intergroup differences, and Spearman correlation coefficient was used to analyze the correlation between variables. Hierarchical regression models were used to study the impacts of selected variables on fatigue status. Results This study obtained 311 valid questionnaires, with a valid recovery rate of 88.86% (311/350). The physical fatigue, mental fatigue, and total fatigue scores of the survey subjects in M (P25, P75) were 3.00 (2.00, 4.00), 2.00 (1.00, 3.00), and 5.00 (4.00, 6.00), respectively. The comparison results showed that, except for smoking, there were statistically significant differences in total fatigue scores between different groups of age, marital status, number of children, educational level, service length of freight transportation, average daily working time, and average monthly income (P<0.05). The difference in total fatigue score among the groups without sleep disorders, with suspected insomnia, and with insomnia was statistically significant (P<0.001). The difference in total fatigue score among the groups without occupational burnout, with moderate occupational burnout, and with severe occupational burnout was also statistically significant (P<0.001). Positive correlations were found between insomnia score and scores of physical fatigue (rs=0.507), mental fatigue (rs=0.547), and total fatigue (rs=0.618) (P<0.001). Hierarchical regression models revealed that having more children, extended daily working hours, insomnia, and increased scores of decreased personal accomplishment were negative factors affecting the fatigue status of heavy-duty commercial truck drivers (P<0.05), and the final regression equation was: total fatigue score=7.579+0.581×number of children+0.916×average daily working time+0.434×score of AIS+0.754×score of reduced personal accomplishment. Conclusion The fatigue status of heavy-duty commercial truck drivers is not optimistic. An increase in the number of children, extended daily working hours, severe insomnia symptoms, and increased scores of decreased personal accomplishment associate with their worse fatigue status.
6.Exploring the mechanism of regulating Bcl-2/Bax pathway by the therapy of promoting blood circulation and nourishing yin to improve spermatogenesis in rats with varicocele
Yichun LIANG ; Wen WANG ; Shulin LIANG ; Ruijie FU ; Zhan QIN ; Liguo GENG ; Chaoba HE ; Shaoying YUAN
Journal of Beijing University of Traditional Chinese Medicine 2024;47(11):1481-1489
Objective To explore the mechanism of the therapy of promoting blood circulation and nourishing yin(PBCNY)in improving spermatogenesis in rats with varicocele based on Bcl-2/Bax pathway.Methods Thirty 8-week-old male SD rats were randomly divided into six groups(five rats per group):sham,model,levocarnitine(1.0 g/kg),and PBCNY low-dose(5.2 g/kg),PBCNY medium-dose(10.4 g/kg),and PBCNY high-dose(20.8 g/kg)groups.Apart from the sham group,all the groups were built a varicocele model by the classical Turner method.After 4 weeks,the sham group and model group were gavaged with normal saline,and the remaining groups were given with levocarnitine or different doses of PBCNY decoction once a day for 4 weeks.At the end of gavage,the sperm quality of rats in each group was detected by a computer-assisted sperm analyzer,and HE staining was used to observe the testicular tissue morphology of rats in each group and performed with Johnsen score.TUNEL method was used to detect apoptosis,RT-qPCR was used to detect Bcl-2 and Bax mRNA expression,and immunohistochemical method was used to detect cytochrome C protein expression.Results Compared to the sham group,sperm total count,motility rate and percentage of sperm with grade(a+b)motility were lower in the model group of rats(P<0.05).HE staining showed disturbed arrangement of seminiferous tubules in the testicular tissue with significant changes and decreased Johnsen score(P<0.05).The result of TUNEL assay showed that the apoptosis rate was increased in the model group(P<0.05).Bax mRNA expression was increased in testicular tissue(P<0.05).The result of immunohistochemistry showed that the positive expression of cytochrome C was increased in the model group(P<0.05).Compared with the model group,the rat sperm total count in the PBCNY medium-dose group,motility rate in the PBCNY low-and medium-dose groups,and percentage of sperm with grade(a+b)motility in the PBCNY low-dose group increased(P<0.05);the pathological structure of rat testis had different degrees of improvement,and Johnsen score increased in the PBCNY medium-dose group(P<0.05);the apoptosis rate of testicular cells decreased in the levocarnitine group and all doses of PBCNY groups(P<0.05);the expression of Bcl-2 mRNA increased in the PBCNY low-dose and high-dose groups(P<0.05),and the expression of Bax mRNA decreased in the levocarnitine group and the PBCNY medium-dose group(P<0.05);the positive expression of cytochrome C decreased in the PBCNY medium-dose group(P<0.05).Conclusion The therapy of PBCNY can improve sperm quality,repair damaged testicular tissue structure and improve spermatogenic function in rats with varicocele,and its mechanism of action may be related to the activation of Bcl-2/Bax pathway and inhibition of cell apoptosis.
7.Exploring the mechanism of regulating Bcl-2/Bax pathway by the therapy of promoting blood circulation and nourishing yin to improve spermatogenesis in rats with varicocele
Yichun LIANG ; Wen WANG ; Shulin LIANG ; Ruijie FU ; Zhan QIN ; Liguo GENG ; Chaoba HE ; Shaoying YUAN
Journal of Beijing University of Traditional Chinese Medicine 2024;47(11):1481-1489
Objective To explore the mechanism of the therapy of promoting blood circulation and nourishing yin(PBCNY)in improving spermatogenesis in rats with varicocele based on Bcl-2/Bax pathway.Methods Thirty 8-week-old male SD rats were randomly divided into six groups(five rats per group):sham,model,levocarnitine(1.0 g/kg),and PBCNY low-dose(5.2 g/kg),PBCNY medium-dose(10.4 g/kg),and PBCNY high-dose(20.8 g/kg)groups.Apart from the sham group,all the groups were built a varicocele model by the classical Turner method.After 4 weeks,the sham group and model group were gavaged with normal saline,and the remaining groups were given with levocarnitine or different doses of PBCNY decoction once a day for 4 weeks.At the end of gavage,the sperm quality of rats in each group was detected by a computer-assisted sperm analyzer,and HE staining was used to observe the testicular tissue morphology of rats in each group and performed with Johnsen score.TUNEL method was used to detect apoptosis,RT-qPCR was used to detect Bcl-2 and Bax mRNA expression,and immunohistochemical method was used to detect cytochrome C protein expression.Results Compared to the sham group,sperm total count,motility rate and percentage of sperm with grade(a+b)motility were lower in the model group of rats(P<0.05).HE staining showed disturbed arrangement of seminiferous tubules in the testicular tissue with significant changes and decreased Johnsen score(P<0.05).The result of TUNEL assay showed that the apoptosis rate was increased in the model group(P<0.05).Bax mRNA expression was increased in testicular tissue(P<0.05).The result of immunohistochemistry showed that the positive expression of cytochrome C was increased in the model group(P<0.05).Compared with the model group,the rat sperm total count in the PBCNY medium-dose group,motility rate in the PBCNY low-and medium-dose groups,and percentage of sperm with grade(a+b)motility in the PBCNY low-dose group increased(P<0.05);the pathological structure of rat testis had different degrees of improvement,and Johnsen score increased in the PBCNY medium-dose group(P<0.05);the apoptosis rate of testicular cells decreased in the levocarnitine group and all doses of PBCNY groups(P<0.05);the expression of Bcl-2 mRNA increased in the PBCNY low-dose and high-dose groups(P<0.05),and the expression of Bax mRNA decreased in the levocarnitine group and the PBCNY medium-dose group(P<0.05);the positive expression of cytochrome C decreased in the PBCNY medium-dose group(P<0.05).Conclusion The therapy of PBCNY can improve sperm quality,repair damaged testicular tissue structure and improve spermatogenic function in rats with varicocele,and its mechanism of action may be related to the activation of Bcl-2/Bax pathway and inhibition of cell apoptosis.
8.Exploring the mechanism of regulating Bcl-2/Bax pathway by the therapy of promoting blood circulation and nourishing yin to improve spermatogenesis in rats with varicocele
Yichun LIANG ; Wen WANG ; Shulin LIANG ; Ruijie FU ; Zhan QIN ; Liguo GENG ; Chaoba HE ; Shaoying YUAN
Journal of Beijing University of Traditional Chinese Medicine 2024;47(11):1481-1489
Objective To explore the mechanism of the therapy of promoting blood circulation and nourishing yin(PBCNY)in improving spermatogenesis in rats with varicocele based on Bcl-2/Bax pathway.Methods Thirty 8-week-old male SD rats were randomly divided into six groups(five rats per group):sham,model,levocarnitine(1.0 g/kg),and PBCNY low-dose(5.2 g/kg),PBCNY medium-dose(10.4 g/kg),and PBCNY high-dose(20.8 g/kg)groups.Apart from the sham group,all the groups were built a varicocele model by the classical Turner method.After 4 weeks,the sham group and model group were gavaged with normal saline,and the remaining groups were given with levocarnitine or different doses of PBCNY decoction once a day for 4 weeks.At the end of gavage,the sperm quality of rats in each group was detected by a computer-assisted sperm analyzer,and HE staining was used to observe the testicular tissue morphology of rats in each group and performed with Johnsen score.TUNEL method was used to detect apoptosis,RT-qPCR was used to detect Bcl-2 and Bax mRNA expression,and immunohistochemical method was used to detect cytochrome C protein expression.Results Compared to the sham group,sperm total count,motility rate and percentage of sperm with grade(a+b)motility were lower in the model group of rats(P<0.05).HE staining showed disturbed arrangement of seminiferous tubules in the testicular tissue with significant changes and decreased Johnsen score(P<0.05).The result of TUNEL assay showed that the apoptosis rate was increased in the model group(P<0.05).Bax mRNA expression was increased in testicular tissue(P<0.05).The result of immunohistochemistry showed that the positive expression of cytochrome C was increased in the model group(P<0.05).Compared with the model group,the rat sperm total count in the PBCNY medium-dose group,motility rate in the PBCNY low-and medium-dose groups,and percentage of sperm with grade(a+b)motility in the PBCNY low-dose group increased(P<0.05);the pathological structure of rat testis had different degrees of improvement,and Johnsen score increased in the PBCNY medium-dose group(P<0.05);the apoptosis rate of testicular cells decreased in the levocarnitine group and all doses of PBCNY groups(P<0.05);the expression of Bcl-2 mRNA increased in the PBCNY low-dose and high-dose groups(P<0.05),and the expression of Bax mRNA decreased in the levocarnitine group and the PBCNY medium-dose group(P<0.05);the positive expression of cytochrome C decreased in the PBCNY medium-dose group(P<0.05).Conclusion The therapy of PBCNY can improve sperm quality,repair damaged testicular tissue structure and improve spermatogenic function in rats with varicocele,and its mechanism of action may be related to the activation of Bcl-2/Bax pathway and inhibition of cell apoptosis.
9.Exploring the mechanism of regulating Bcl-2/Bax pathway by the therapy of promoting blood circulation and nourishing yin to improve spermatogenesis in rats with varicocele
Yichun LIANG ; Wen WANG ; Shulin LIANG ; Ruijie FU ; Zhan QIN ; Liguo GENG ; Chaoba HE ; Shaoying YUAN
Journal of Beijing University of Traditional Chinese Medicine 2024;47(11):1481-1489
Objective To explore the mechanism of the therapy of promoting blood circulation and nourishing yin(PBCNY)in improving spermatogenesis in rats with varicocele based on Bcl-2/Bax pathway.Methods Thirty 8-week-old male SD rats were randomly divided into six groups(five rats per group):sham,model,levocarnitine(1.0 g/kg),and PBCNY low-dose(5.2 g/kg),PBCNY medium-dose(10.4 g/kg),and PBCNY high-dose(20.8 g/kg)groups.Apart from the sham group,all the groups were built a varicocele model by the classical Turner method.After 4 weeks,the sham group and model group were gavaged with normal saline,and the remaining groups were given with levocarnitine or different doses of PBCNY decoction once a day for 4 weeks.At the end of gavage,the sperm quality of rats in each group was detected by a computer-assisted sperm analyzer,and HE staining was used to observe the testicular tissue morphology of rats in each group and performed with Johnsen score.TUNEL method was used to detect apoptosis,RT-qPCR was used to detect Bcl-2 and Bax mRNA expression,and immunohistochemical method was used to detect cytochrome C protein expression.Results Compared to the sham group,sperm total count,motility rate and percentage of sperm with grade(a+b)motility were lower in the model group of rats(P<0.05).HE staining showed disturbed arrangement of seminiferous tubules in the testicular tissue with significant changes and decreased Johnsen score(P<0.05).The result of TUNEL assay showed that the apoptosis rate was increased in the model group(P<0.05).Bax mRNA expression was increased in testicular tissue(P<0.05).The result of immunohistochemistry showed that the positive expression of cytochrome C was increased in the model group(P<0.05).Compared with the model group,the rat sperm total count in the PBCNY medium-dose group,motility rate in the PBCNY low-and medium-dose groups,and percentage of sperm with grade(a+b)motility in the PBCNY low-dose group increased(P<0.05);the pathological structure of rat testis had different degrees of improvement,and Johnsen score increased in the PBCNY medium-dose group(P<0.05);the apoptosis rate of testicular cells decreased in the levocarnitine group and all doses of PBCNY groups(P<0.05);the expression of Bcl-2 mRNA increased in the PBCNY low-dose and high-dose groups(P<0.05),and the expression of Bax mRNA decreased in the levocarnitine group and the PBCNY medium-dose group(P<0.05);the positive expression of cytochrome C decreased in the PBCNY medium-dose group(P<0.05).Conclusion The therapy of PBCNY can improve sperm quality,repair damaged testicular tissue structure and improve spermatogenic function in rats with varicocele,and its mechanism of action may be related to the activation of Bcl-2/Bax pathway and inhibition of cell apoptosis.
10.Exploring the mechanism of regulating Bcl-2/Bax pathway by the therapy of promoting blood circulation and nourishing yin to improve spermatogenesis in rats with varicocele
Yichun LIANG ; Wen WANG ; Shulin LIANG ; Ruijie FU ; Zhan QIN ; Liguo GENG ; Chaoba HE ; Shaoying YUAN
Journal of Beijing University of Traditional Chinese Medicine 2024;47(11):1481-1489
Objective To explore the mechanism of the therapy of promoting blood circulation and nourishing yin(PBCNY)in improving spermatogenesis in rats with varicocele based on Bcl-2/Bax pathway.Methods Thirty 8-week-old male SD rats were randomly divided into six groups(five rats per group):sham,model,levocarnitine(1.0 g/kg),and PBCNY low-dose(5.2 g/kg),PBCNY medium-dose(10.4 g/kg),and PBCNY high-dose(20.8 g/kg)groups.Apart from the sham group,all the groups were built a varicocele model by the classical Turner method.After 4 weeks,the sham group and model group were gavaged with normal saline,and the remaining groups were given with levocarnitine or different doses of PBCNY decoction once a day for 4 weeks.At the end of gavage,the sperm quality of rats in each group was detected by a computer-assisted sperm analyzer,and HE staining was used to observe the testicular tissue morphology of rats in each group and performed with Johnsen score.TUNEL method was used to detect apoptosis,RT-qPCR was used to detect Bcl-2 and Bax mRNA expression,and immunohistochemical method was used to detect cytochrome C protein expression.Results Compared to the sham group,sperm total count,motility rate and percentage of sperm with grade(a+b)motility were lower in the model group of rats(P<0.05).HE staining showed disturbed arrangement of seminiferous tubules in the testicular tissue with significant changes and decreased Johnsen score(P<0.05).The result of TUNEL assay showed that the apoptosis rate was increased in the model group(P<0.05).Bax mRNA expression was increased in testicular tissue(P<0.05).The result of immunohistochemistry showed that the positive expression of cytochrome C was increased in the model group(P<0.05).Compared with the model group,the rat sperm total count in the PBCNY medium-dose group,motility rate in the PBCNY low-and medium-dose groups,and percentage of sperm with grade(a+b)motility in the PBCNY low-dose group increased(P<0.05);the pathological structure of rat testis had different degrees of improvement,and Johnsen score increased in the PBCNY medium-dose group(P<0.05);the apoptosis rate of testicular cells decreased in the levocarnitine group and all doses of PBCNY groups(P<0.05);the expression of Bcl-2 mRNA increased in the PBCNY low-dose and high-dose groups(P<0.05),and the expression of Bax mRNA decreased in the levocarnitine group and the PBCNY medium-dose group(P<0.05);the positive expression of cytochrome C decreased in the PBCNY medium-dose group(P<0.05).Conclusion The therapy of PBCNY can improve sperm quality,repair damaged testicular tissue structure and improve spermatogenic function in rats with varicocele,and its mechanism of action may be related to the activation of Bcl-2/Bax pathway and inhibition of cell apoptosis.

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