OBJECTIVETo investigate the relation of peripheral blood estradiol, progesterone and testosterone levels with irritable bowel syndrome (IBS).

METHODSForty-eight patients with IBS identified according to Rome II diagnostic criteria and 30 healthy subjects as controls were analyzed for peripheral blood sex hormone levels by radioimmunoassay and corresponding software.

RESULTSIn male patients with IBS, blood testosterone level was significantly lower than that of the control group (P<0.05), but blood estradiol and progesterone showed no significant differences between the two groups (P>0.05). In the female patients, blood estradiol level was significantly lower than that of the control group (P<0.05), whereas blood progesterone and testosterone levels had no significant differences between the two groups (P>0.05).

CONCLUSIONPeripheral blood testosterone level in male IBS patients and estradiol level in female patients are lower than those of healthy subjects, suggesting that IBS might be associated with blood sex hormone disorder.

Adult ; Aged ; Estradiol ; blood ; Female ; Humans ; Irritable Bowel Syndrome ; blood ; Male ; Middle Aged ; Progesterone ; blood ; Radioimmunoassay ; Testosterone ; blood

Objective To demonstrate the nuclear orphan receptor Nur77 agonist fungal polyketone (Cytosporone B,Csn-B) protects the neurons in Parkinson's disease cell model.Methods The SH-SY5Y cells were divided into blank group,control group (Csn-B),model group (MPP +) and experimental group (MPP + + Csn-B).The relative viability of human neuroblastoma cells SH-SY5Y induced by 1-methyl-4-pehny1-pyridine (MPP+) was measured with MTT assay.The expression of microtubule associated protein 1 light chain3 (LC3)-Ⅱ / Ⅰ and α-synuclein protein was detected by Western blotting.The expression of LC3 mRNA and α-synuclein mRNA were detected by qPCR.Immunofluorescence was used to observe the expression of LC3 and α-synuclein in each group.Results The MTT results showed that MPP + significantly inhibited proliferation of SH-SY5Y cells in a dose dependent manner.Western blotting showed that,LC3-Ⅱ and LC3-Ⅰ gray scale in blank group,control group,model group and experimental group were 0.21 ±0.02,0.23 ±0.03,0.32 ±0.03,0.69 ±0.05,LC3-Ⅱ/Ⅰ in model group and experimental group was significantly higher than that in blank group(P ＜ 0.01),and LC3-Ⅱ/Ⅰ in experimental group was significantly higher than that in model group (P ＜ 0.01).The α-synuclein in blank group,control group,model group and experimental group were 0.30 ± 0.05,0.51 ± 0.06,2.18 ± 0.12,0.73 ± 0.08,the expression of α-synuclein in model group and experimental group were significantly higher than that in blank group (P ＜0.01).The expression of α-synuclein protein in experimental group was significantly lower than that in model group (P ＜ 0.01).The relative expression of LC3 mRNA in blank group,control group,model group and experimental group were 3.94 ±0.18,4.04 ±0.13,6.01 ±0.21,7.43 ±0.35,the LC3 mRNA in model group and experimental group were significantly higher than that in blank group (P ＜ 0.01),LC3 mRNA in experimental group was significantly higher than that in model group (P ＜0.01).The α-synuclein mRNA in blank group,control group,model group and experimental group were 3.09 ±0.19,3.47 ±0.24,7.18 ±0.30,4.60 ±0.27,the expression of α-synuclein mRNA in model group and experimental group were significantly higher than that in blank group (P ＜0.01).The expression of α-synuclein mRNA in experimental group was significantly lower than that in model group (P ＜0.01).Immunofluorescence showed that LC3 protein was mainly located in cytoplasm.The expression of LC3 in model group and experimental group were significantly higher than that in blank group,and the expression level of LC3 in experimental group was higher than that in model group.oα-synuclein protein was distributed evenly in the cytoplasm and nucleus.The expression of α-synuclein in model group and experimental group was higher than that in blank group,experimental group was lower than that in model group.Conclusion In Parkinson' s disease cell model,Nur77 agonist can promote the degradation of α-synuclein,the mechanism may be related to increase autophagy level.

Objective To learn the quality of life for people with disabilities in Hangzhou City, and to provide the basisfor targeted interventions. Methods Using the health survey list (SF-36) and the self-compiled population learningvolume, 350 disabled people were investigated face to face in Xiaoshan, Jiande and Fuyang District of Hangzhou City,and the quality of life of different disabled people with demographic characteristics were compared. Results A total of 335disabled people were investigated. The SF-36 score of the 335 disabled people was (62.36±18.40) . Compared with thehealthy people, the scores were lower in the survey of 335 people with disabilities(P<0.001) . The scores of the maledisabled in VT, MH, and PF were lower than the female. In terms of PF, RP, BP, scores of people above 48 years oldwere lower than people under the age of 48 years old, and in terms of mental health, scores of people above 48 years oldwere higher than people under the age of 48 years old. Score in physiological function of the physical disabled people waslower than other types of disabled people(MD=-19.447, -18.509, -19.792, P<0.008) . In terms of PF, score ofgrade 2 disabled people was lower than grade 1 and 4 disabled people (MD=-17.925, -18.162, P <0.008) .Conclusion The quality of life of disabled people in Hangzhou is low, which is affected by gender, age, and disabilitytype and disability grade.

Senescence is an inevitable natural life process that involves structural and functional degeneration of tissues and organs. Recently, the process of skin aging has attracted much attention. Determining a means to delay or even reverse skin aging has become a research hotspot in medical cosmetology and anti-aging. Dysfunction in the epidermis and fibroblasts and changes in the composition and content of the extracellular matrix are common pathophysiological manifestations of skin aging. Reactive oxygen species and matrix metalloproteinases play essential roles in this process. Stem cells are pluripotent cells that possess self-replication abilities and can differentiate into multiple functional cells under certain conditions. These cells also possess a strong ability to facilitate tissue repair and regeneration. Stem cell transplantation has the potential for application in anti-aging therapy. Increasing studies have demonstrated that stem cells perform functions through paracrine processes, particularly those involving exosomes. Exosomes are nano-vesicular substances secreted by stem cells that participate in cell-to-cell communication by transporting their contents into target cells. In this chapter, the biological characteristics of exosomes were reviewed, including their effects on extracellular matrix formation, epidermal cell function, fibroblast function and antioxidation. Exosomes derived from stem cells may provide a new means to reverse skin aging.

Objective To establish an evaluation system of pathogen detection rate of hospitalized patients before antimicrobial treatment based on process and outcome indicators,and study its application effect.Methods Hospi-talized patients with therapeutic antimicrobial treatment in a tertiary first-class hospital from July 2022 to June 2023 were selected as the study objects.Difference in process and outcome indicators were compared between before(Ju-ly-December 2022,control group)and after(January-June 2023,intervention group)the implementation of inter-vention in the evaluation system for pathogen detection rate of hospitalized patients before antimicrobial treatment.Results 41 577 and 27 052 hospitalized patients received therapeutic antimicrobial agents were included in the inter-vention group and control group,respectively.Pathogen detection rate and the accurate pathogen detection rate in the intervention group were both higher than those in the control group(74.2％vs 62.8％and 90.3％vs 82.5％,respectively),both with statistically significant differences(both P＜0.001).The goal achievement rate and im-provement rate for pathogen detection rate were 237.5％and 18.2％respectively,the goal achievement rate and im-provement rate for accurate pathogen detection rate were 104.0％and 9.5％respectively.For the process indica-tors,the conformity rate of detection and diagnosis,accurate collection rate,timely transfer rate,acceptance rate of pathogen specimens in the intervention group were all higher than those in the control group,differences were all statistically significant(all P＜0.001).For the outcome indicators,detection rates of targeted indicators and blood culture specimens,pathogen detection rate before treatment of restricted and special grade antimicrobial agent,as well as detection rate of sterile body fluid specimens in the intervention group were all higher than those in the con-trol group,with statistical significance(all P＜0.05).In addition,the positive rate of blood culture specimens in-creased from 18.5％before intervention to 21.7％after intervention,with statistically significant difference(P＜0.05).Conclusion The establishment of indicator evaluation system can improve the detection rate and accurate detection rate of pathogens before antimicrobial treatment,as well as the management quality and connotation of indicators.

OBJECTIVES: By retrospective study of the epidemiological characteristics of sports-related sudden death (SrSD), the risk factors associated with SrSD were analyzed and explored to provide a scientific basis for comprehensive prevention and treatment of SrSD. METHODS: The personal information (sex, age, occupation, etc.), case information (time, place, type of sports, relative time between SrSD occurrence and exercise, etc.), death related information (sign or prodrome, medical history and surgical history, etc.), rescue situation (witnesses, on-site assistance, the availability of paramedics, etc.) of 374 SrSD cases in Guangdong Province from 2017 to 2021 were collected. Statistical analysis was conducted aiming at the key factors. RESULTS: In the 374 cases, there were significantly more males than females (19.78:1); the number of people aged between >39 and 59 was the largest (151, 40.37%); non-manual workers (68.98%) were more than manual workers; the top three sports with the highest number cases were basketball (34.49%), running (19.52%) and badminton (12.03%); from 3 pm to 9 pm (63.10%) was the time period with the highest incidence of events; sudden death mainly occurred during exercise (75.27%) and within 1 h after exercise (20.05%); the on-site rescue rate was very low (6.15%); the rate of autopsies was extremely low (1.07%); sudden cardiac death was the most common cause (67.11%). CONCLUSIONS SrSD is most common in males aged >39 to 59 years old, mostly in non-manual workers, and usually occurs in basketball and running. Sudden death is more likely to occur during exercise and within 1 h after exercise. Therefore, the above potential risk factors should be focused on and studied in daily comprehensive prevention and treatment to provide scientific basis for accurate prevention and first aid of such sudden death.
Adult ; Autopsy ; China/epidemiology* ; Death, Sudden, Cardiac/prevention & control* ; Female ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Sports

BACKGROUNDThe optimal timing of surgical revascularization for patients presenting with ST-segment elevation myocardial infarction (STEMI) and impaired left ventricular function is not well established. This study aimed to examine the timing of surgical revascularization after STEMI in patients with ischemic heart disease and left ventricular dysfunction (LVD) by comparing early and late results.

METHODSFrom January 2003 to December 2013, there were 2276 patients undergoing isolated coronary artery bypass grafting (CABG) in our institution. Two hundred and sixty-four (223 male, 41 females) patients with a history of STEMI and LVD were divided into early revascularization (ER, <3 weeks), mid-term revascularization (MR, 3 weeks to 3 months), and late revascularization (LR, >3 months) groups according to the time interval from STEMI to CABG. Mortality and complication rates were compared among the groups by Fisher's exact test. Cox regression analyses were performed to examine the effect of the time interval of surgery on long-term survival.

RESULTSNo significant differences in 30-day mortality, long-term survival, freedom from all-cause death, and rehospitalization for heart failure existed among the groups (P > 0.05). More patients in the ER group (12.90%) had low cardiac output syndrome than those in the MR (2.89%) and LR (3.05%) groups (P = 0.035). The mean follow-up times were 46.72 ± 30.65, 48.70 ± 32.74, and 43.75 ± 32.43 months, respectively (P = 0.716). Cox regression analyses showed a severe preoperative condition (odds ratio = 7.13, 95% confidence interval 2.05-24.74, P = 0.002) rather than the time interval of CABG (P > 0.05) after myocardial infarction was a risk factor of long-term survival.

CONCLUSIONSSurgical revascularization for patients with STEMI and LVD can be performed at different times after STEMI with comparable operative mortality and long-term survival. However, ER (<3 weeks) has a higher incidence of postoperative low cardiac output syndrome. A severe preoperative condition rather than the time interval of CABG after STEMI is a risk factor of long-term survival.

Aged ; Coronary Artery Bypass ; methods ; Female ; Humans ; Male ; Middle Aged ; Myocardial Infarction ; mortality ; surgery ; Myocardial Ischemia ; mortality ; surgery ; Proportional Hazards Models ; Retrospective Studies ; Risk Factors ; Time Factors ; Treatment Outcome ; Ventricular Dysfunction, Left ; mortality ; surgery

Sempervirine, a yohimbane-type alkaloid isolated from Gelsemium elegans, was found to significantly inhibit the cellular proliferation of U251 cells in vitro and in vivo in a dose-dependent manner. U251 cells were treated with 0-16 μmol·L^-1 of sempervirine for 24, 48 or 72 h. An MTT assay and clone formation assay were used to investigate cell survival and clone formation. Hoechst staining and Annexin V-FITC/PI staining were used to measure cell apoptosis. The expression of PI3K, AKT, p-AKT, Bax, Bcl-2, caspase-3 and cleaved caspase-3 was determined by Western blot analysis. The antitumor effect of sempervirine in vivo was investigated by inoculating nude mice with U251 cells. All animal experiments were in strict accordance with the regulations of the Biomedical Ethics Committee of Fujian Medical University (Fujian, China). The results show that sempervirine significantly inhibits the proliferation and induces the apoptosis of U251 cells, promotes cleavage of caspase-3, down-regulates the protein expression of PI3K and Bcl-2/Bax, and inhibits phosphorylation of AKT in vitro. Intraperitoneal injection of 4 or 8 mg·kg^-1·day^-1 of sempervirine inhibits U251 cells tumor growth in the xenograft nude mice, and tumor weight decreased by 44.76% and 61.26%, respectively. Our study shows that sempervirine significantly inhibits the proliferation of U251 cells in vitro and in vivo, laying a foundation for further research and development of its anti-glioma effect.

Muscarinic acetylcholine receptors (mAChRs), including M1-M5 subtypes, are classic receptors in regulating water, ion, and solute transport in salivary gland. Our work focuses on the studies on the expression pattern and function of mAChR in the submandibular gland (SMG), and the underlying mechanism involved in the mAChR-regulated secretion, together with the effect of parasympathectomy on the salivary secretion. Microvascular autotransplantation of SMG into the temporal fossa provides a continuous and endogenous source of fluids, and is currently an effective method for treating severe keratoconjunctivitis sicca. By using RT-PCR, Western blotting, and immunofluorescence, our data demonstrated that the expression of M1 and M3 subtypes were decreased in latent period in rabbit SMG autotransplantation model, whereas carbachol stimulation promoted the salivary secretion, as well as M1 and M3 expressions. By contrast, mAChRs were hypersensitive in epiphora SMGs, whereas atropine gel and botulinum toxin A application significantly inhibited the hypersecretion in both animal models and patients. Furthermore, the possible intracellular signal molecules involved in the mAChR-modulated salivary secretion were explored. Activation of mAChR upregulated the expression of aquaporin 5 (AQP5), the main transporter that mediated water secretion through transcellular pathway, and led to AQP5 trafficking from lipid rafts to non-lipid microdomain. Extracellular signal-regulated kinase 1/2 (ERK1/2) was involved in the mAChR-regulated AQP5 content. mAChR activation also modulated the expression, distribution, and function of tight junction proteins, and increased paracellular permeability. ERK1/2/β-arrestin2/clathrin/ubiquitin signaling pathway was responsible for the mAChR-regulated downregulation of tight junction molecule claudin-4. Cytoskeleton filamentous actin (F-actin) was also involved in the distribution and barrier function of epithelial tight junctions. Besides, endothelial tight junctions were opened by mAChR agonist-evoked salivation in the mice. Furthermore, parasympathetic denervation increased resting salivary secretion in the long terminrats and minipigs. Taken together, our work demonstrated that mAChR regulated saliva secretion via transcellular and paracellular pathways in SMG epithelium as well as tight junction opening in SMG endothelium. Modulation of mAChR might be a promising strategy to ameliorate SMG dysfunction.
Animals ; Aquaporin 5 ; Carbachol ; Humans ; Mice ; Rabbits ; Receptors, Muscarinic ; Salivation ; Submandibular Gland

Physical exercise can reduce the overall risk of cardiovascular disease, prolong lifespan and improve the quality of life, but some studies have shown that there is a certain correlation between vigorous physical exercise and sudden cardiac death. A number of retrospective or prospective studies on sports-related sudden cardiac death (SrSCD) have been conducted at home and abroad. This article reviews the related studies on the definition, epidemiological characteristics, common causes of SrSCD and effects of excercise on cardiovascular function, pre-exercise screening and evaluation of SrSCD, in order to understand the latest research progress on SrSCD and provide clues and references for SrSCD research.
Humans ; Retrospective Studies ; Prospective Studies ; Quality of Life ; Incidence ; Death, Sudden, Cardiac/prevention & control*