Pathogenesis of glucocorticoid-induced osteoporosis based on label-free mass proteomics / 中国骨伤

OBJECTIVE@#To explore pathogenesis of glucocortocoid-induced osteoporosis(GIOP) based on label-free mass proteomics.@*METHODS@#Twevle female Sprague-Dawley(SD) rats were randomly divided into two groups, named as sham group and GIOP group. After one-week adaptive feeding, the rats of GIOP group were administered with dexamethasone via intramuscular injection according to 2.5 mg/kg weighting, while the rats of sham group were administered with the same amount of saline, twice a week. The tibias of each group were collected after 8-week modeling and made pathological sections to confirm the success of modeling. Three samples of each group were picked up to perform label-free mass proteomics. After quality control, differentially expressed proteins were identified according to qualitative and quantitative analyses. Then gene ontology(GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analysis, cluster analysis as well as protein-protein interaction analysis were performed using bioinformatics analysis.@*RESULTS@#Compared with sham group, the structure of bone trabecular in GIOP group showed abnormal arrangement, uneven distribution and obvious fragmentation, which could demonstrate successful modeling. A total of 47 differentially expressed proteins (DEPs) were identified including 20 up-regulated and 27 down-regulated proteins. The expression of protein nucleophosmin 1(NPM1), adipocyte plasma membrane associated protein (APMAP), cytochromec oxidase subunit 6A1 (COX6A1) and tartrate-resistant acid phosphatase (ACP5) showed a significant difference between two groups. KEGG results showed DEPs were enriched on metabolism-related pathways, immune-related pathways and AMP-activated kinase (AMPK) signaling pathway.@*CONCLUSION@#Protein NPM1, APMAP, COX6A1 and ACP5 showed a close relationship with pathogenesis of GIOP, which could serve as potential biomarkers of GIOP. AMPK signaling pathway played an important role in the occurrence and development of GIOP, which could be regarded as potential signaling pathway to treatment GIOP.

Effect of proinflammatory factors TNF-α,IL-1β, IL-6 on neuropathic pain / 中国中药杂志

Cytokines can be divided into two types： proinflammatory cytokines and anti-inflammatory cytokines. Proinflammatory cytokines are a kind of small molecular peptides synthesized and excreted by immune and non-immune cells, which can regulate a variety of physiological functions and play an important role in the process of trauma, pain and infection. Proinflammatory cytokines include TNF, IL-1, IL-6 and IL-8. More and more evidences suggest that proinflammatory cytokines(PICs), such as interleukin-1β(IL-1β), interleukin-6(IL-6) and tumor necrosis factor-α(TNF-α), are induced in the spinal cord(SC) and dorsal root ganglion (DRG) under various injury conditions, and contribute to pain hypersensitivity. In recent years, with the deepening of studies on neuropathic pain mechanism and the increasing expansion of the neuroinflammation study field, the action mechanisms of cytokines and molecules in regulating cytokines in neuropathic pain are expected to provide new targets for the development of analgesic drugs. This review aims to provide an overview of inflammatory mechanisms for proinflammatory cytokines TNF-α, IL-1β, IL-6, with a focus on neuropathic pain.

A study on the plasma lipids level and its influencing factors among adults in Tongxiang City / 预防医学

Objective To know the plasma lipids level and influencing factors among adults in Tongxiang city,and to provide evidence for prevention and intervention of dyslipidemia.Methods Multistage stratified cluster sampling method was conducted to select participants in Tongxiang city.Questionnaire interview,physical examination and blood lipid detection were performed among the selected subjects.Models of the univariate and multivariate unconditional logistic regressions were used to analyze the influencing factors of dyslipidemia.Results A total of 600 people were involved in this study.The prevalence and standardized rates of dyslipidemia were 36.33% and 36.11 %,and abnormal rates of HDL -C,TG,TC and LDL -C were 27.33%,15.67%,4.83% and 4.83%,which standardized were 29.17%,15.1 3%,3.1 8% and 3.12%, respectively.The abnormal rate of LDL -C in females was higher than that in males (P <0.05).Borderline abnormal rate of TC and dyslipidemia rates were increased with age (P <0.05),and the abnormal rate of HDL -C were decreased with age (P <0.05).Multivariate logistic regression analysis showed that BMI (OR =3.398),diabetes mellitus(OR =1.694), hypertension (OR =1.717)and total static time(OR =1.712)were the risk factors for dyslipidemia.Conclusion The prevalence of dyslipidemia was high among the adults in Tongxiang city,especially the abnormity of HDL -C and TG. Community comprehensive prevention and control of dyslipidemia should be carried out according to its risk factors.

A case -control study on risk factors of malignant tumors in Tongxiang city / 预防医学

Objective To exam the influence of psychological factors,occupational factors and dietary habits on malignant tumors.Methods A total of 2 471 patients with malignant tumor were selected from 2010 to 2012 and 1 to 1 matching method was used controlling sex and age distribution in the case and control groups.Data collected by interviewing was analyzed by univariate and multivariate conditional logistic regression.Results 12 related factors including 6 psychological factors were found in relation to malignant tumor after univariate logistic regression analysis.The multivariate logistic regression analysis showed that harmful occupational history (OR =1.731,95%CI:1.337 ~2.242),often having fried food (OR =1.889,95%CI:1.398 ~2.551),heavy salty diet(OR =1.457,95%CI:1.169 ~1.818),psychological problems (OR =1.274,95%CI:1.003 ~1.617),poor marital life (OR =2.007,95%CI:1.111 ~3.623)and lack of self -regulation (OR =1.460,95%CI:1.189 ~1.793 )were the risk factors.Conclusion Malignant tumor was related to a variety of exposure factors and psychological factor has become an important risk factor for malignant tumor in Tongxiang city.