Aim To study the effective mechanism of curcumin on abnormal cell cycle and apoptosis of serum-deprived PC12 cells induced by ?-amyloid peptide 25-35(A?25-35).Methods Synchronized PC12 cells were pretreated with 5 ?mol?L-1 Cur for 1 h,and then 25 ?mol?L-1 A?25-35 for 24 h.Protein and mRNA expression of p21,CDK4,E2F1 and bax were detected by RT-PCR and Western blot respectively.Results After synchronized PC12 cells being pretreated with 5 ?mol?L-1 Cur for 1 h,the mRNA and protein expression of p21 gene were increased gradually,while CDK4,E2F1 and bax gene were decreased.Conclusion Cur maybe effects the redistribution of cell cycle and apoptosis of serum-deprived PC12 cells induced by A?25-35,through increasing the mRNA and protein expression of p21,and decreasing the mRNA and protein expression of CDK4,E2F1 and bax gene.

Objective To study the effects of A?25-35 on the expression of gene P21,CDK4,E2F1 and BAX in cultured PC12 cells.MethodsPC12 cells were treated with 25 ?mol/L A?25-35,the relation between cell cycle redistribution and apoptosis was analyzed by flow cytometry(FCM).Protein and mRNA expression of P21,CDK4,E2F1 and BAX were detected by RT-PCR and Western-blot respectively.Results About 90% PC12 cells were found arrest on G0/G1 by FCM being deprived serum.Treated with 25 ?mol/L A?25-35 for 8,16,24 h,the percent of S phase cells was raised remarkably(P

Aim To study the effects of Procyanidins (PC) on apoptosis of PC12 cells induced by A? 25-35. Methods Cell survival rate was evaluated by MTT assay, and apoptosis was analyzed by Hoechst-PI fluorescence staining. The expressions of mRNA and protein for P53 and Bcl-2 were tested by RT-PCR and Western blot. Results Pretreatment with different concentrations of PC (10~30 mg?L -1) for 1h increased the survival rate of PC12 cells in a dose-dependent fashion. PC prevented the PC12 cells nuclei from shrinkage, condensation and cleavage induced by A? 25-35. PC decreased the expressions of P53 mRNA and P53 protein, and increased the expression of bcl-2 mRNA and Bcl-2 protein. Conclusion These results indicated that PC can protect PC12 cells from apoptosis induced by A? 25-35. The mechanism of protection is likely related to decreasing P53 gene expression, and increasing bcl-2 gene expression.

Objective To explore the design and application of the multifunctional treatment beds on patients′ position compliance and comfort after intraocular retinal reattachment surgery. Methods Eighty-six patients needing special position nursing after intraocular retinal reattachment surgery were randomly divided into experiment and control groups. The former received the special multifunction treatment beds while normal ward beds were used for the control patients . The position compliance , comfort and the complications were observed one month after surgery. Result The position compliance and the degree of comfort in the experiment group were significantly better than those in the control group and the complication rate was significantly lower than that of the control group (all P<0.05). Conclusion The special multifunction treatment beds can be effective in increasing the patients compliance in positions and compliance as well as reducing postoperative complications and increasing the operation success rate.

Objective To study the effect of procyanidins (PC) on mRNA and protein expression of par-4 and bcl-2 genes in PC12 cells induced by A?_ 25-35 . Methods Cell survival rate was evaluated by MTT assay and apoptosis was analyzed by Hoechst 33258-PI fluorescence staining. The expressions of mRNA and protein for par-4 and bcl-2 were tested by RT-PCR and Western blotting. Results Pretreatment with different concentrations of PC (5、10、20, and 30 mg/L) for 1 h increased the survival rate of PC12 cell in a dose-dependent manner. PC prevented the PC12 cells nuclei from shrinkage, condensation, and cleavage induced by A?_ 25-35 . PC decreased the expression of par-4 mRNA and protein, and increased the expression of bcl-2 mRNA and protein. Conclusion PC can protect PC12 cells from apoptosis induced by A?_ 25-35 in a dose dependent manner. The mechanism of protection is likely related to decreasing the par-4 gene expression and increasing the bcl-2 gene expression.

The coronavirus disease 2019 (COVID-19) has outbroken globally. As an acute infectious disease, COVID-19 has significant impacts on multiple organs and systems throughout the body. Among patients with COVID-19, especially severe and critical cases, a variety of potential risk factors for coagulation dysfunction exist. Furthermore, the coagulation dysfunction of COVID-19 patients was mainly characterized by elevated D-dimer levels. The coagulation dysfunction could directly affect the prognosis of COVID-19 patients and is a major cause of death in patients with severe COVID-19. In this article, the literatures on the basic clinical manifestations, clinical risk factor, mechanism of coagulation dysfunction and evaluation of coagulation function in COVID-19 were reviewed.

ObjectiveTo develop a questionnaire on the knowledge needs of respiratory rehabilitation training for in-service healthcare workers, and test its reliability and validity. MethodsA theoretical framework was constructed based on the contents of the respiratory rehabilitation course modules of American Association of Cardiopulmonary Rehabilitation and American Association for Respiratory Care. The first draft of the questionnaire was prepared through literature searches and analyses, semi-structured interviews, and expert group discussions. The reliability and validity of the questionnaire was tested by interviewing 17 respiratory rehabilitation professionals and 16 respiratory rehabilitation experts by correspondence, and investigating 380 cases of in-service healthcare workers engaged in respiratory rehabilitation. ResultsThe knowledge needs questionnaire of respiratory rehabilitation training for in-service healthcare workers included progress in respiratory rehabilitation, physiological basis and diagnosis of chronic lung diseases, individualized assessment and management principles of chronic lung diseases, treatment of chronic lung diseases and guideline-recommended medications, oxygen therapy, exercise assessment and exercise prescription, tobacco addiction and cessation, nutritional assessment and weight management, psychological screening and intervention, self-management and health behavior promotion, and effectiveness assessment of respiratory rehabilitation, totaling eleven dimensions and 52 items. The total Cronbach's α was 0.921, the total folded half reliability was 0.904, the total retest reliability was 0.922, and the Cronbach's α of each dimension ranged from 0.909 to 0.953; the folded half reliabilities ranged from 0.882 to 0.924, and the retest reliabilities ranged from 0.908 to 0.950. The validity of the questionnaire's content was 0.902. In exploratory factor analysis, eleven metric factors were extracted, and their cumulative variance contribution rate was 75.324%. ConclusionThe questionnaire on the knowledge needs of respiratory rehabilitation training for in-service healthcare workers is reliable and valid, and can be used to assess the knowledge needs of healthcare workers participating in in-service training in respiratory rehabilitation.

BACKGROUND: LY01005 (Goserelin acetate sustained-release microsphere injection) is a modified gonadotropin-releasing hormone (GnRH) agonist injected monthly. This phase III trial study aimed to evaluated the efficacy and safety of LY01005 in Chinese patients with prostate cancer. METHODS: We conducted a randomized controlled, open-label, non-inferiority trial across 49 sites in China. This study included 290 patients with prostate cancer who received either LY01005 or goserelin implants every 28 days for three injections. The primary efficacy endpoints were the percentage of patients with testosterone suppression ≤50 ng/dL at day 29 and the cumulative probability of testosterone ≤50 ng/dL from day 29 to 85. Non-inferiority was prespecified at a margin of -10%. Secondary endpoints included significant castration (≤20 ng/dL), testosterone surge within 72 h following repeated dosing, and changes in luteinizing hormone, follicle-stimulating hormone, and prostate specific antigen levels. RESULTS: On day 29, in the LY01005 and goserelin implant groups, testosterone concentrations fell below medical-castration levels in 99.3% (142/143) and 100% (140/140) of patients, respectively, with a difference of -0.7% (95% confidence interval [CI], -3.9% to 2.0%) between the two groups. The cumulative probabilities of maintaining castration from days 29 to 85 were 99.3% and 97.8%, respectively, with a between-group difference of 1.5% (95% CI, -1.3% to 4.4%). Both results met the criterion for non-inferiority. Secondary endpoints were similar between groups. Both treatments were well-tolerated. LY01005 was associated with fewer injection-site reactions than the goserelin implant (0% vs . 1.4% [2/145]). CONCLUSION: LY01005 is as effective as goserelin implants in reducing testosterone to castration levels, with a similar safety profile. TRIAL REGISTRATION ClinicalTrials.gov, NCT04563936.
Humans ; Male ; Antineoplastic Agents, Hormonal/therapeutic use* ; East Asian People ; Gonadotropin-Releasing Hormone/agonists* ; Goserelin/therapeutic use* ; Prostate-Specific Antigen ; Prostatic Neoplasms/drug therapy* ; Testosterone