The clinical effect of a combined technical system for bicuspid aortic valves repair / 中国胸心血管外科临床杂志

@#Objective    To summarize the clinical result of a combined technical system for bicuspid aortic valve (BAV) repair. Methods    Patients who diagnosed as BAV and sever aortic regurgitation (AR) underwent a strategy of combined repair technics including annuloplasty, sinus plasty, leaflet plasty, sinus-tubular junction (STJ) plasty depending on anatomy pathological characteristics between October 2019 and January 2021 were enrolled. The clinical data of the patients were analyzed. Results    A total of 17 patients were enrolled. There were 11 males and 6 females with an average age of 18-49 (32.4±13.6) years. Fifteen patients had typeⅠand 2 patients had typeⅡBAV according to Sievers classification. Annuloplasty was applicated in 13 patients, sinus plasty in 8 patients, leaflet plasty in 17 patients, and STJ plasty in 11 patients, respectively. The cardiopulmonary bypass (CPB) time was 95 (84, 135) min, aortic cross-clamping time was 68 (57, 112) min, and the ICU stay time was 17 (12, 25) h. After the operation, mild AR was presented in 14 patients, moderate AR in 1 patient and severe AR in 2 patients. The latter 3 patients underwent second operation under CPB, after then, 1 patient had mild AR and 2 patients had moderate AR. The follow-up time was 13.1±4.6 months. At the latest follow-up, 12 patients had mild AR and 5 patients had moderate AR, and no patient had reoperation. Conclusion    A combined technical system for BAV repair can be used effectively and safely with an acceptable short and middle-term result.

Development and validation of a predictive model for the risk of positive after transperineal ultrasound-guided prostate biopsy / 中华泌尿外科杂志

Objective:To develop a nomogram to predict the probability of prostate cancer after transeperineal prostate biopsy, and verify the diagnostic efficacy and clinical applicable value of the model.Methods:The clinicopathologic data of 475 patients who underwent prostate biopsy at Yijishan Hospital of Wannan Medical College between January 2019 to August 2021 were retrospectively reviewed. Of all the patients, 367 patients from January 2019 to December 2020 were in the development cohort and 108 patients from January 2021 to August 2021 were in the validation cohort. Patients in the development cohort were (68.86±9.00) years old. The tPSA level was 13.6(8.6, 23.3)ng/ml, and Prostate Imaging Reporting and Data System (PI-RADS) score was 4(3, 4) points. Patients in the validation cohort were (68.89±8.67) years old. The tPSA was 13.1(8.7, 25.6)ng/ml, and PI-RADS score was 4 (3, 5) points. Univariate and multivariate logistic regression were used to analyze prostate cancer risk factors in the development cohort. Then the nomogram prediction model was established by the risk factors. The prediction model's performance was evaluated using receiver operating characteristic (ROC) curves, calibration maps, and decision curve (DCA) analysis in the development cohort. The performance of the model was verified in the validation cohort.Results:The pathological results showed 180 patients with prostate cancer and 187 patients without prostate cancer in the development cohort. The validation cohort included 53 patients with and 55 without prostate cancer. Based on the results of the univariate and multivariate logistic regression analysis, this model incorporates factors including age ( OR=1.059, P=0.003), platelet-to-monocyte ratio (PMR) ( OR=0.002, P=0.011), f/tPSA ( OR=0.009, P=0.020), and PI-RADS score ( OR= 3.076, P<0.001). The calibration curve revealed a great agreement. Internal validation of the nomogram showed that the area under the ROC curve was 0.845 (95% CI 0.794-0.895). The Hosmer-Lemeshow test was also performed( χ2=1.476, P=0.224). The validation group with an area under the ROC curve was 0.869 (95% CI 0.797-0.941). The results of the decision curve analysis indicated that the decision curve was located above the positive and negative lines in the threshold range of 10% to 90%, within which the model has clinical application. Conclusions:The nomogram, which combines patient age, PMR, f/t PSA, and PI-RADS scores, has high predictive efficacy for prostate cancer and has clinical application value.

Association analysis of various obesity-related indices and vitamin D deficiency in middle-aged and elderly population in Lanzhou / 中华临床营养杂志

Objective:To analyze and compare the association between different obesity-related indices and vitamin D deficiency in middle-aged and elderly population dwelled in Lanzhou city.Methods:From May, 2011 to September, 2012, middle-aged and elderly individuals with complete baseline data were included via randomly cluster sampling from 3 communities in Lanzhou. The subjects were divided into 4 subgroups by vitamin D levels and various obesity-related indices were compared across subgroups with the same gender. The relationship between the obesity-related indices and the severity of vitamin D deficiency was analyzed using Spearman correlation analysis, and the effects of different obesity-related indices on the severity of vitamin D deficiency was analyzed using multivariate logistic regression analysis.Results:A total of 9 437 residents were included. The overall prevalence of vitamin D deficiency was 97.7%. Compared with the group with lower vitamin D level, participants in the group with higher vitamin D level showed evidently lower body mass index (BMI), waist circumference (WC), lipid accumulation product (LAP), visceral adiposity index (VAI) and triglyceride/ high density lipoprotein cholesterol (TG/HDL-C) ratio in the total population and females, while only WC, LAP, VAI and TG/HDL-C in the males (all P<0.05). Spearman correlation analysis showed that BMI, WC, LAP, VAI and TG/HDL-C were positively correlated with the severity of vitamin D deficiency in the total population and the females, while only LAP, VAI and TG/HDL-C in the males (all P<0.05) . Multivariate logistic regression analysis showed that higher levels of these obesity related indices were correlated with more severe vitamin D deficiency in the total population and the females, while only higher LAP, VAI and TG/HDL-C in the males (all P<0.05). The effects of higher LAP was the most prominant in the total population ,the females and the males. Conclusion:Various obesity phenotypes are closely related to vitamin D deficiency in middle-aged and elderly women, while only visceral obesity and abnormal lipid metabolism are related to vitamin D deficiency in middle-aged and elderly men, with LAP being the most important influencing factor.

Research progress and clinical application of allergen nasal provocation test / 临床耳鼻咽喉头颈外科杂志

The allergen nasal provocation testing（NPT）, in which allergens are applied directly to the nasal mucosa under standard and controlled conditions to provoke the main symptoms of allergic rhinitis（AR）, reproduces the response of the upper respiratory tract to natural exposure to allergens under controlled conditions and is the only test currently available to confirm nasal reactivity to allergens. It is invaluable in studying the mechanisms of AR and in assessing the response to novel anti-allergic treatments. The test may play an increasingly important role in clinical practice, especially in the identification of local AR, the diagnosis of occupational AR, the clarification of the composition of allergens, the assessment of the efficacy of AR treatment and the selection of candidates undergoing allergen immunotherapy. This article reviewed the application of NPT in the diagnosis of allergic and non-allergic rhinitis, and also introduces the indications, contraindications, advantages and limitations of NPT in evaluating nasal response.

Transportation of citrinin is regulated by the CtnC gene in the medicinal fungus Monascus purpureus / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Monascus is one of the most essential microbial resources in China, with thousands of years of history. Modern science has proved that Monascus can produce pigment, ergosterol, monacolin K, γ-aminobutyric acid, and other functionally active substances. Currently, Monascus is used to produce a variety of foods, health products, and pharmaceuticals, and its pigments are widely used as food additives. However, Monascus also makes a harmful polyketide component called citrinin in the fermentation process; citrinin has toxic effects on the kidneys such as teratogenicity, carcinogenicity, and mutagenicity (Gong et al., 2019). The presence of citrinin renders Monascus and its products potentially hazardous, which has led many countries to set limits and standards on citrinin content. For example, the citrinin limit is less than 0.04 mg/kg according to the Chinese document National Standard for Food Safety Food Additive Monascus (GB 1886.181-2016) (National Health and Family Planning Commission of the People's Republic of China, 2016), and the maximum level in food supplements based on rice fermented with Monascus purpureus is 100 µg/kg in the European Union (Commission of the European Union, 2019).

Correlation between MLH1 methylation and distant metastasis of solid pseudopapillary tumor of pancreas / 中华肝胆外科杂志

Objective:To investigate the significance of MLH1 protein expression and MLH1 gene methylation rate between metastatic solid pseudopapillary tumor of pancreas (SPT) and non-metastatic SPT, and to explore the correlation between MLH1 gene methylation and SPT metastasis.Methods:Twelve metastatic SPT patients admitted to Peking University People's Hospital, Rizhao Central Hospital and Chaoyang Central Hospital of Liaoning Province from January 2009 to May 2022 were studied retrospectively, including 3 males and 9 females, with a median age of 47 years old, ranging from 21 to 73 years old. Thirty non-metastatic SPT patients with clear diagnosis, clear medical history and complete follow-up data from pathological database of Peking University People's Hospital from January 2009 to May 2017 were selected as the control group, including 12 males and 18 females, with a median age of 42 years old, ranging from 34 to 69 years old. Clinical data such as gender, age and pathological data were collected. Immunohistochemical expression of MLH1 protein and methylation of MLH1 gene were detected by pathological paraffins.Results:There was no significant difference in general data between the two groups (all P>0.05). Among the 12 metastatic SPT patients, 4 cases metastasized to liver, 2 to spleen, 2 to lung, 2 to lymph nodes, 1 to mediastinum, and 1 to sacrum. Compared with the non-metastatic tissue, the MLH1 protein deletion in metastatic pancreatic lesions (metastatic SPT-P) and metastatic lesions (metastatic SPT-M) were increased [both 33.3%(4/12)], and the difference was statistically significant (both Chi square=5.00, both P=0.041). Compared with 0 (0/30) MLH1 gene methylation rate in non-metastatic SPT tissues, the methylation rate of MLH1 gene in metastatic SPT-M and metastatic SPT-P tissues [both 30% (3/10)] were higher, with statistical significance (both Chi square=0.96, both P=0.032). Conclusion:Compared with non-metastatic SPT, the loss rate of MLH1 protein expression and MLH1 gene methylation are increased in metastatic SPT. MLH1 methylation may occur before metastasis, which can be used as a predictor of SPT metastasis.

A case report of bladder clear cell carcinoma / 中华泌尿外科杂志

Bladder clear cell carcinoma is a rare variant of epithelial carcinoma of the lower urinary tract. This manuscript reported a case of 71-year-old female patient with the main complaint of gross hematuria. Transurethral resection of baldder tumor(TURBT) was performed after Gynecological consultation, and postoperative pathology results revealed clear cell carcinoma in bladder. Four months after surgery, the pelvic CT showed tumor recurrence in bladder. Another TURBT was performed followed with gemcitabine infusion chemotherapy. At 5 months after the second surgery, the tumor recurred again, and also resected by TURBT. No relapse or metastasis occurred during the 5-month follow-up after the third operation.

Immunogenicity and influencing factors of hepatitis B vaccination based on different vaccination schedules among chronic kidney disease patients / 中华流行病学杂志

Objective: To explore the immunogenicity and influencing factors of hepatitis B vaccination based on different vaccination schedules among chronic kidney disease (CKD) patients. Methods: CKD patients who participated in randomized controlled trials in four hospitals in Shanxi province and completed three doses of 20 µg vaccination (at months 0, 1 and 6) and four doses of 20 µg or 60 µg vaccination (at months 0, 1, 2, and 6) were surveyed from May 2019 to July 2020.According to the ratio of 1∶1∶1, 273 CKD patients were divided into 3 groups randomly. Quantification of the anti-hepatitis B surface antigen-antibody (anti-HBs) in serum samples was performed using chemiluminescent microparticle immunoassay at months 1 and 6 after the entire course of the vaccinations. The positive rate, high-level positive rate, geometric mean concentration (GMC) of anti-HBs, and the influencing factors were analyzed by χ2 tests, analysis of variance, unconditional logistic regression analysis. Results: A total of 273 CKD patitents were participants.The positive rates in the CKD patients with four doses of 20 µg vaccination (92.96%,66/71) or 60 µg vaccination (93.15%, 68/73) were higher than that in the CKD patients with three doses of 20 µg vaccination (81.69%, 58/71) at month one after the full course of the vaccinations (P<0.05). The GMCs of anti-HBs showed similar results (2 091.11 mIU/ml and 2 441.50 mIU/ml vs. 1 675.21 mIU/ml) (P<0.05). The positive rate was higher in the CKD patients with four doses of 60 µg vaccination (94.83%,55/58) than in those with three doses of 20 µg vaccination (78.79%,52/66) (P<0.05) at month six after the full course of the vaccinations. And the GMC of anti-HBs in the patients with four doses of 60 µg vaccination (824.28 mIU/ml) was significantly higher than those in the patients with 3 or 4 doses of 20 µg vaccination (639.74 mIU/ml and 755.53 mIU/ml) (P<0.05). After controlling the confounding factors, the positive rate in the CKD patients with four doses of 60 µg vaccination were 3.19 (95%CI: 1.02-9.96) and 5.32 (95%CI: 1.27-22.19) times higher than those in the patients with three doses of 20 µg vaccination at months 1 and 6 after the full course of the vaccinations, respectively. The positive rate in CKD patients without immune suppression or hormone therapy was 3.33 (95%CI: 1.26-8.80) and 4.78 (95%CI: 1.47-15.57) times higher than those in the patients with such therapy, respectively. Conclusions: Four doses of 20 µg or 60 µg hepatitis B vaccination could improve the immunogenicity in patients with CKD. And four doses of 60 µg vaccination might play a positive role in maintaining anti-HBs in this population. The immunogenicity in the CKD patients with immune suppression or hormone therapy was poor.

Functional magnetic stimulation can improve the urination of persons with urine retention after a spinal cord injury / 中华物理医学与康复杂志

Objective:To observe any effect of functional magnetic stimulation (FMS) of the sacral 3 nerve root on relieving urine retention after a spinal cord injury.Methods:Forty-four patients with neurogenic bladder disorders after a spinal cord injury were divided at random into a 5Hz group ( n=14), a 20Hz group ( n=15), and a sham stimulation group ( n=15). In addition to conventional bladder control training, the 5Hz and 20Hz groups were given 20 minutes of FMS of the sacral 3 nerve root at the appropriate frequency five days a week for 4 weeks. The sham stimulation group was not given any stimulation. A detailed urination diary was kept during the treatment, and before and after the 4 weeks, everyone′s bladder pressure volume was assessed and an electromyogram was recorded. Results:After the treatment those in the 5Hz and 20Hz groups had improved significantly in terms of average bladder capacity, bladder pressure, residual urine volume, daily number of urethral catheterizations, daily micturition frequency, single urine output, H-reflex latency, and the amplitude and incubation period of the F wave. Those in the sham stimulation group showed no consistent improvement in any of these indicators. Moreover, the average residual urine volume, daily urination frequency and H-reflex latency and amplitude of the 20Hz group were significantly better than those of the 5Hz group.Conclusions:Magnetic stimulation of the S3 nerve roots can effectively improve the urination of persons with neurogenic bladder disorders after a spinal cord injury. The preferred frequency is 20Hz.

Mogroside V inhibits H202-induced oxidative damage in MIN6 cells by PI3K/Akt pathway / 中国药理学通报

Aim To investigate the protective effect of mogroside V on hydrogen peroxide ( H,02 )-induced oxidative stress response in mouse islet (3 cells MIN6 and the relation of its mechanism to PI3K/Akt signa¬ling pathway.Methods MIN6 cells were treated with 500 (jimol • L_1 H,(), after mogroside V,and cell via¬bility was detected by MTT.The release of reactive ox¬ygen species ( ROS) and apoptotic percentage of MIN6 cells were determined by flow cytometry.The expres¬sions of apoptosis-related factor Bel-2 , proliferation-re¬lated factor PCNA, protein Akt and p-Akt were deter¬mined by Western blot.Results H,02 restrained the proliferation of MIN6 cells obviously, induced ROS pro¬duction and apoptosis, and reduced the expression of Bel-2 and PCN A.The expressions of protein Akt and p-Akt decreased.After treatment of mogroside V , the release of ROS decreased, and the apoptosis of MIN6 cells was inhibited.The expression levels of apoptosis- related protein Bcl-2 and proliferation-related protein PCN A were reversed.The expressions of protein Akt and P-Akt increased.The viability of MIN6 cells in¬duced by H,0, increased.In addition, mogroside V partly reversed the apoptosis induction and ROS pro¬duction of Akt inhibitor MK2206 (5 jjimol • L"1 ) on MIN6 cells.Conclusions Mogroside V has protec¬tive effect on H202-induced oxidative damage in MIN6 cells and its mechanism is related to PI3K/Akt signa¬ling pathway.

Optimization of Agrobacterium-Mediated Genetic Transformation System of Armillaria gallica / 中国实验方剂学杂志

ObjectiveTo optimize the existing genetic transformation system of Armillaria gallica to improve the transformation efficiency and lay a foundation for the follow-up research on Armillaria molecular marker-assisted breeding and gene function. MethodThe genetically transformed plasmid pH101-PAgGPD-GFP-TrpC was constructed，transformed into Escherichia coli，amplified， and cultured，and the plasmid was extracted. The extracted plasmid was transformed into four different agrobacteria LBA4404，EHA105，GV3101，and AGL-1，respectively. The transformed agrobacteria were used for impregnating A. gallica，and the agrobacteria with the highest conversion rate were screened out. Then the agrobacterium-mediated genetic transformation system of A. gallica was optimized from the type and concentration of antibiotics，co-culture time，concentration of bacterial solution， and impregnation method. The phenotype profiles of A. gallica under different conditions were observed using Synbiosis ProtoCol 3. ResultThe optimized genetic transformation conditions of A. gallica were as follows： the Agrobacterium strain of EHA105 at absorbance A600 nm=0.6， the co-culture time of 2 d， the infection mode of negative pressure impregnation for 10 min， the primary screening medium of PDA medium containing 400 mg·L-1 cefotaxime sodium and 10 mg·L-1 hygromycin，and the secondary screening medium of PDA medium containing 12 mg·L-1 hygromycin. ConclusionIn this study，the existing genetic transformation system of A. gallica was optimized，and there was a significant difference in the transformation rate before and after optimization （P<0.05）. After optimization，the transformation efficiency of A. gallica was about 4.33%，which was about eight times higher than that before optimization.

Aortic valve repair in adult patients with aortic regurgitation: the construction of a technics system and a short and mid-term result / 中华胸心血管外科杂志

Objective:To summarize the construction of a technics system of aortic valve repair in adult patients with aortic regurgitation(AR).Methods:From March 2013 to May 2020, aortic valve repair was performed in 79 patients. In which 43 cases underwent simple technics such as subcommissural annuloplasty, leaflet plication etc. Cases done before May, 2018 were defined as A group, yet the other 36 cases underwent a routine repair technics system including annuloplasty, sinusplasty, cuspidplasty and sinotubularplasty after then as B group. The general data and the operation procedure, also the follow-up were analyzed.Results:In group A, there were 2 cases with simple aortic valve repair and 41 cases with other intracardiac operations. In group B, 23 patients had aortic valve repair alone and 13 patients had other intracardiac operations. Group A mostly adopts the technologies of subjunctional involution and ridge suspension. In group B, flap ring molding, flap leaf molding, sinus tube joint molding and other technologies were used. Postoperative reflux was reduced to moderate or mild in most patients in group A. In group B, postoperative reflux was reduced to mild in most patients. There were 7 cases of severe reflux in group A, and 2 cases of severe reflux were worse after repair than before surgery. In group B, 8 patients had no effective repair, and 3 patients continued to have satisfactory repair after the second turnaround. Aortic regurgitation at 1 year(or the last echocardiographic follow-up) after surgery: 15 patients in group A were mild, 17 were moderate, and 4 were severe; In group B, 2 patients underwent revalve replacement within 1 year, and the remaining 29 patients were moderate and mild, 20 cases were moderate, 7 cases were moderate, and 2 cases were severe.Conclusion:In some adult moderate and severe AR cases, a routine combined repair system can be applied to increase success rate of repair, and shows a good short and mid-term result.

A Soybean Straw Cultivation Medium for Armillaria gallica and Optimal Composition / 中国实验方剂学杂志

Objective:To explore the feasibility of replacing wood （or wood chips） with crop residues for culturing <italic>Armillaria gallica</italic> targeting the problems of forest resource destruction and increased cultivation cost caused by the extensive use of wood in <italic>Gastrodia elata</italic> cultivation， so as to reduce the cultivation cost of <italic>G. elata</italic>， promote the effective use of crop residues， and protect forest resources. Method:The growth situation of <italic>A. gallica</italic> in different media was observed， followed by the measurement of its growth rate using streaking method and the determination of total polysaccharide content of <italic>A. gallica</italic> by phenol-concentrated sulfuric acid colorimetric method. In order to further optimize the soybean straw cultivation medium， we carried out a four-factor three-level L₉（3⁴） orthogonal assay on the ratio of main ingredients， sucrose content， inorganic salt content， and water content. Result:The comparison of growing states of <italic>A. gallica</italic> cultured in different media revealed that <italic>A. gallica</italic> in soybean straw medium began to grow since the fourth day of inoculation， and the mycelium grew well， with the growth rate being 0.352 cm·d^-1， which was 1.48 times that in birch wood medium. The total polysaccharide content of <italic>A. gallica</italic> cultured in soybean straw medium was the highest， which was 39.260 mg·g^-1， much higher than 17.028 mg·g^-1 of that cultured in birch wood medium. This demonstrated the obvious advantage of soybean straw medium， whose main ingredients were soybean straw and wheat bran at the ratio of 8：2， with the sucrose and inorganic salt content accounting for 1% and 0.5% of the main ingredients， respectively. When the water content reached 50%， the growth rate of <italic>A. gallica</italic> was maintained at 0.392 cm·d^-1. Conclusion:This study has provided a basis for utilizing soybean straw instead of wood （or wood chips） as cultivation medium for <italic>A. gallica</italic>， thus better reducing the waste of forest resources and protecting the natural environment in the cultivation of <italic>G. elata</italic>.

Effects of Exogenous Substances on Growth of Polyporus umbellatus Mycelium and Its Polysaccharide Content / 中国实验方剂学杂志

Objective:To explore the effects of diverse exogenous substances at different concentrations on the growth of<italic> Polyporus umbellatus</italic> mycelium and polysaccharide content and screen out the optimal growth condition for <italic>P. umbellatus</italic> mycelium， so as to provide a reference for its large-scale artificial cultivation. Method:<italic>P. umbellatus</italic> mycelium was cultured in media containing different exogenous substances using the method for fungal culturing in plate. The growth rate of the mycelium was judged by the colony diameter and the polysaccharide content was determined by the phenol-sulfuric acid method. Result:The high-dose cyclic adenosine monophosphate， 6-benzyl aminopurine （6-BA）， gibberellic acid （GA）， 2，4-dichlorophenoxyacetic acid （2，4-D）， vitamin （V） B₁， VB₃， VB₆， VB₉， and VB₁₂ all promoted the growth of <italic>P. umbellatus</italic> mycelium and elevated polysaccharides content. By contrast， indole acetic acid （IAA）， VC， and VB₂ inhibited its growth， with the most obvious inhibition detected in the high-dose VC group. IAA and VB₂ both reduced the polysaccharide content， whereas the high-dose VC significantly increased the polysaccharide content. Cyclic adenosine monophosphate， 6-BA， GA， 2，4-D， VB₁， VB₃， VB₆， VB₉， and VB₁₂ at the concentrations of 2 mmol·L^-1， 6 mg·L^-1， 15 mg·L^-1， 2 mg·L^-1， 4 mg·L^-1， 2 mg·L^-1， 4 mg·L^-1， 6 mg·L^-1， and 10 mg·L^-1， respectively， contributed to the growth of <italic>P. umbellatus</italic> mycelium<italic> </italic>and polysaccharide accumulation. Conclusion:The growth of <italic>P. umbellatus </italic>mycelium and polysaccharide accumulation can be regulated by adding exogenous substances to the culture medium.

A Meta analysis on the effectiveness of multiple health education implementation forms on exercise behavior among college students / 中国学校卫生

Objective@#To compare the effectiveness of three forms of health education including classroom teaching, network teaching and after class tutoring on exercise behavior among college students.@*Methods@#A literature search was performed using web of science, PubMed, ScienceDirect, Scopus, Cochrane Library, and CNKI database on randomized controlled trials of health education intervention on exercise behavior among college students. Literature filtering, data extraction, and assessment of the risks of bias were conducted by two independent researchers using Stata 16.0 software based on traditional Meta analysis and network meta analysis.@*Results@#A total of 23 literatures were included. The results showed that health education courses could effectively increase the weekly exercise time of college students( SMD =0.29), exercise frequency ( SMD =0.25) and number of students participating in exercise( OR =1.33). Subgroup analysis revealed that the increase in classroom teaching and network teaching associated with increased weekly exercise time ( SMD =0.45, 0.36), exercise frequency ( SMD =0.22, 0.37) and exercise number ( OR =1.36, 1.26)(all P <0.05); The effect of after class tutoring on the time and frequency of weekly exercise was not statistically significant( P >0.05). Indirect comparison showed that the effects of classroom teaching and network teaching on weekly exercise time, and exercise frequency were superior to that of extracurricular counselling( P <0.05); There were no significant differences in the weekly exercise time, frequency and number of participants between the two groups( P >0.05). Based on SUCRA method and the effect size, health education in the form of classroom teaching may have the greatest effect on the weekly exercise time, frequency and the number of students participating in the exercise( SUCRA =91.5, 94.1, 87.1).@*Conclusion@#Health education in the form of classroom teaching and network teaching can positively influence exercise behavior of college students.It is suggested that health education courses should be carried out in college courses so as to better promote college students to participate in physical exercise.

Hydrogen sulfide restores cardioprotective effects of remote ischemic preconditioning in aged rats via HIF-1α/Nrf2 signaling pathway

The present study explored the therapeutic potential of hydrogen sulfide (H2 S) in restoring aging-induced loss of cardioprotective effect of remote ischemic preconditioning (RIPC) along with the involvement of signaling pathways. The left hind limb was subjected to four short cycles of ischemia and reperfusion (IR) in young and aged male rats to induce RIPC. The hearts were subjected to IR injury on the Langendorff apparatus after 24 h of RIPC. The measurement of lactate dehydrogenase, creatine kinase and cardiac troponin served to assess the myocardial injury.The levels of H2S, cystathionine β-synthase (CBS), cystathionine γ-lyase (CSE), nuclear factor erythroid 2-related factor 2 (Nrf2), and hypoxia-inducible factor (HIF-1α) were also measured. There was a decrease in cardioprotection in RIPC-subjected old rats in comparison to young rats along with a reduction in the myocardial levels of 2, CBS, CSE, HIF-1α, and nuclear: cytoplasmic Nrf2 ratio. Supplementation with sodium hydrogen sulfide (NaHS, an H2S donor) and l-cysteine ( H 2S precursor) restored the cardioprotective actions of RIPC in old hearts. It increased the levels of H2S, HIF-1α, and Nrf2 ratio without affecting CBS and CSE. YC-1 (HIF-1α antagonist) abolished the effects of NaHS and l-cysteine in RIPC-subjected old rats by decreasing the Nrf2 ratio and HIF-1α levels, without altering 2.The late phase of cardioprotection of RIPC involves an increase in the activity of H2S biosynthetic enzymes, which increases the levels of H2S to upregulate HIF-1α and Nrf2. H2S has the potential to restore aging-induced loss of cardioprotective effects of RIPC by upregulating HIF-1α/Nrf2 signaling.

Soluble receptor for advanced glycation end-products inhibits myocardial fibrosis of ischemia/reperfusion mice / 解剖学报

Objective To investigate the effect of soluble receptor for advanced glycation end-products (sRAGE) on inflammation in myocardial ischemia/reperfusion ( I/R ) mice and its mechanism. Methods Myocardial I/R injury model was conducted by left anterior descending ligation for 30 minutes and reperfusion for 2 weeks in male C57BL/6 mice aged 6-8 weeks. The mice were randomly divided into four groups with five C57BL/6 mice in each group. The cardiac function was detected by echocardiography, the inflammatory cells infiltration was observed by HE staining, the myocardial fibrosis was detected by Masson and Sirius red staining, the expression of galectin-3 was detected by immunohistochemical staining. Results Compared with the sham group, the cardiac function decreased, the inflammatory cells infiltrated increased among the myocardial tissue, the percentage of myocardial fibrosis area increased, and the expression of galectin-3 increased in I/R groups. After exogenous sRAGE treatment, the cardiac function of mice was significantly improved, the inflammatory cells infiltration decreased, the myocardial fibrosis area decreased, and the expression of galectin-3 decreased as well. Conclusion sRAGE may reduce inflammatory cells infiltration in mice heart by inhibiting the expression of galectin-3, and then alleviating myocardial fibrosis during myocardial ischemia/reperfusion injury.

Effects of budesonide on proliferation and apoptosis of airway smooth muscle cells in asthmatic rats / 解剖学报

Objective To investigate the effect of budesonide ( BUD) inhalation on the proliferation and apoptosis of airway smooth muscle cells ( ASMCs) in asthmatic rats and its molecular biological mechanism. Methods Totally 40 SD rats were randomly divided into control group, asthma model group, low (0. 25 mg/kg) and high (2 mg/kg) BUD group. The rat asthma model was induced by ovalbumin (VOA) combined with aluminium hydroxide Gel sensitization stimulation. After sensitization, the intervention group inhaled different doses of BUD before stimulation. The related parameters of lung tissue and airway were measured and calculated by medical image analysis system, immunofluorescence was used to detect the expression of type I collagen ( Col I ) and Col III in rat airway smooth muscle ( ASM ), and the protein expressions of Bcl-2, Bax, Caspase-3, phosphorylated ERK 1 and 2(p-ERK 1 / 2), p-p38 MAPK were detected by Western blotting. The proliferation activity of ASMCs was detected by MTT method, and the apoptosis rate of ASMCs was detected by flow cytometry. Results Compared with the control group, airway remodeling occurred in the asthmatic model group, and the airway wall thickness ( WAt/Pbm ), inner wall thickness ( WAi/Pbm ) and smooth muscle thickness ( WAm/Pbm ) increased, compared with the model group, the airway remodeling was inhibited in BUD intervention group, and the tracheal WAt/Pbm, WAi/Pbm and WAm/Pbm decreased in bud treatment group. BUD could decrease the proliferation activity of ASMCs, increase the apoptosis rate of ASMCs, inhibit the expression of Col I and Col III, deregulate the expression of Bcl-2, upregulate the expression of Bax and Caspase-3 ( all P<0. 05), and inhibit the activity of ERK 1/2 and p38 MAPK signal pathway. Conclusion BUD can inhibit the proliferation and the promote apoptosis of ASMCs in asthmatic rats, which may be related to the inhibition of ERK 1/2 and p38 MAPK signal pathways.

Prevention and control of HIV/AIDS in China: lessons from the past three decades / 中华医学杂志(英文版)

In the past 37 years, human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) has undergone various major transmission routes in China, with the world most complex co-circulating HIV-1 subtypes, even the prevalence is still low. In response to the first epidemic outbreak of HIV in injecting drug users and the second one by illegal commercial blood collection, China issued the Anti-Drug Law and launched the Blood Donation Act and nationwide nucleic acid testing, which has avoided 98,232 to 211,200 estimated infections and almost ended the blood product-related infection. China has been providing free antiretroviral therapy (ART) since 2003, which covered >80% of the identified patients and achieved a viral suppression rate of 91%. To bend the curve of increasing the disease burden of HIV and finally end the epidemic, China should consider constraining HIV spread through sexual transmission, narrowing the gaps in identifying HIV cases, and the long-term effectiveness and safety of ART in the future.

Correlations between content of linarin in Chrysanthemum indicum and climatic factors in habitats / 中国中药杂志

Chrysanthemi Indici Flos(CIF), the capitulum of Chrysanthemum indicum, is widely used in proprietary Chinese medicine and daily chemical products. At present, CIF is mainly produced from wild resources and rarely cultivated. This study aims to reveal the correlations between linarin content in CIF and climatic factors in different habitats, and provide a theoretical basis for suitable zoning and rational production of medicinal materials. The content of linarin in CIF was determined by HPLC. Grey relational analysis and Pearson correlation analysis were carried out for linarin content with climatic factors. The results showed that the content of linarin in CIF was significantly different among different habitats. The grey relational degrees of climatic factors with linarin content was in an order of average annual precipitation>annual average sunshine hours>annual average temperature>longitude>annual frost-free period>latitude>altitude. Longitude, annual average temperature and average annual precipitation had significantly positive correlations with the content of linarin in CIF, whereas latitude and altitude showed negative correlations with it. The annual frost-free period and annual average sunshine hours had no significant correlation with the content of linarin in CIF. The content of linarin in CIF varied significantly in different habitats. High longitude, low latitude, low altitude, high annual average temperature and high annual average precipitation could be used as indicators for the habitats of high-quality Ch. indicum. This study provides a reference for selecting suitable producing areas of Ch. indicum and establishing artificial cultivation system.