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Objective:To investigate the association between time in target range and risk of vertebral fracture in patients with type 2 diabetes.Methods:The clinical data of 1 032 patients with type 2 diabetes who were hospitalized in endocrine department of Henan Provincial People′s Hospital from June 2017 to July 2021 were collected. Among which 632 patients were included into final analysis. The diabetes-specific risk score for vertebral fracture was used to assess the risk of vertebral fracture. Multivariate linear regression analysis was used to test the association between time in target range and risk score of vertebral fracture. Risk score≥9 was defined as increased risk of vertebral fracture. Multivariate logistic regression was used to estimate the association between time in target range and risk of vertebral fracture. Results:Among the included patients, mean age was(55.0±12.4) years and the percent of male was 72.5%. The mean course of diabetes was(9.4±8.0) years, and mean score of risk of vertebral fracture was 5.6±4.3. Time in target range was negatively correlated with risk score of vertebral fracture( P for trend <0.001), which was independent of potential confounders and continuous glucose monitoring parameters. The included patients were divided into four groups based on quartiles of time in target range. Multivariate logistic regression indicated that the risk of vertebral fracture in the first quartile of time in target range was 4.6 times higherthanthatinthe4thquartile, and the significance remained adjusted for potential confounders, s, CV, or meanamplitudeofglycemicexcursions(MAGE), respectively. Conclusion:Timein target rangewasnegativelycorrelatedwithriskscoreofvertebralfracturein patient with type 2 diabetes. Low time in range level was an independent risk factor for increased risk of vertebral fracture.
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Objective: To analyze the status of prevention and treatment of occupational diseases among mining and manufacturing industries in China in 2019, provide the scientific basis for the formulation and revision of policies and standards of prevention and treatment of occupational diseases. Methods: In May 2022, Collecting data of a project named Surveillance of Occupational Hazards in the Workplace in 2019 through the National Surveillance System for Occupational Hazards in the workplace. Compare the status of prevention and treatment of occupational diseases in 63 563 enterprises of mining and manufacturing industries among different dimensions. Results: The training rate of managers was 76.17% and that of occupational health managers was 76.97%. The rate of reporting of occupational diseases hazardous items was 67.58%, the rate of launching of the detection of occupational hazards was 57.16%, and the rate of launching of occupational health examination was 62.42%. Excluding the distribution rate of dust mask, the installation rate of various occupational prevention facilities and the distribution rate of gas mask and hearing protector were less than 80%. The differences in all the indicators among different areas, enterprise scales, economic types were statistically significant (P<0.05) . Conclusion: There are still some enterprises which are relatively weak in the ability of the prevention and treatment of occupational diseases in China. Measures such as special support, guidance and strengthen supervision should be taken towards those enterprises toimprove the awareness of prevention and treatment of occupational diseases and the level of that.
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Humains , Exposition professionnelle , Maladies professionnelles/prévention et contrôle , Secteur secondaire , Lieu de travail , Chine/épidémiologie , Santé au travailRésumé
Objective: To understand the exposure level of dust and noise in the mining industry and provide data support for revising policy for the prevention and control of occupational diseases. Methods: In May 2022, Data was collected through the National Surveillance Program for Occupational Hazards in the Workplace. Descriptive analysis was conducted for dust and noise levels by industry type and enterprise size from 7, 679 enterprises in the mining industry among 29 provincial regions nationwide. Results: The enterprises in the mining industry included in the National Surveillance Program for Occupational Hazards in the Workplace are mainly small and micro, accounting for 47.97% (3684/7679) and 30.00% (230/7679) respectively. The industry is mainly compred of employers in the non-metallic ming and beneficiation industry, accounting for 50.25% (3859/7679). Among the enterprises with silica dust, coal dust, and noise hazards, the proportion of enterprises where total dust concentration and noise intensity exceed the standard is higher than 50%. 30% of the posts are with an exposure level of silica dust, coal dust, and noise that exceeds the standard. The exceedance rate and the median of the time-weighted average concentration of total coal dust among large and medium-sized enterprises are higher than those among small and micro-sized enterprises (P<0.05) . Conclusion: The dust and noise hazards in the mining industry are lower than in the past in China, but more than 25% of workers are still at a high risk of occupational pneumoconiosis and noise deafness. Therefore, intervention and surveillance strategies should be strengthened in the future.
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Humains , Poussière/analyse , Exposition professionnelle/analyse , Santé au travail , Charbon , Silice/analyse , Industrie minière charbonRésumé
Objective: To study the construction of a prognostic model for hepatocellular carcinoma (HCC) based on pyroptosis-related genes (PRGs). Methods: HCC patient datasets were obtained from the Cancer Genome Atlas (TCGA) database, and a prognostic model was constructed by applying univariate Cox and least absolute shrinkages and selection operator (LASSO) regression analysis. According to the median risk score, HCC patients in the TCGA dataset were divided into high-risk and low-risk groups. Kaplan-Meier survival analysis, receiver operating characteristic (ROC) curves, univariate and multivariate Cox analysis, and nomograms were used to evaluate the predictive ability of the prognostic models. Functional enrichment analysis and immune infiltration analysis were performed on differentially expressed genes between the two groups. Finally, two HCC datasets (GSE76427 and GSE54236) from the Gene Expression Omnibus database were used to externally validate the prognostic value of the model. Univariate and multivariate Cox regression analysis or Wilcoxon tests were performed on the data. Results: A total of 366 HCC patients were included after screening the HCC patient dataset obtained from the TCGA database. A prognostic model related to HCC was established using univariate Cox regression analysis, LASSO regression analysis, and seven genes (CASP8, GPX4, GSDME, NLRC4, NLRP6, NOD2, and SCAF11). 366 cases were evenly divided into high-risk and low-risk groups based on the median risk score. Kaplan-Meier survival analysis showed that there were statistically significant differences in the survival time between patients in the high-risk and low-risk groups in the TCGA, GSE76427, and GSE54236 datasets (median overall survival time was 1 149 d vs. 2 131 d, 4.8 years vs. 6.3 years, and 20 months vs. 28 months, with P = 0.000 8, 0.034 0, and 0.0018, respectively). ROC curves showed good survival predictive value in both the TCGA dataset and two externally validated datasets. The areas under the ROC curves of 1, 2, and 3 years were 0.719, 0.65, and 0.657, respectively. Multivariate Cox regression analysis showed that the risk score of the prognostic model was an independent predictor of overall survival time in HCC patients. The risk model score accurately predicted the survival probability of HCC patients according to the established nomogram. Functional enrichment analysis and immune infiltration analysis showed that the immune status of the high-risk group was significantly decreased. Conclusion: The prognostic model constructed in this study based on seven PRGs accurately predicts the prognosis of HCC patients.
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Humains , Carcinome hépatocellulaire/génétique , Pronostic , Pyroptose , Tumeurs du foie/génétique , Facteurs de risqueRésumé
Objective The dense fibrous connective tissue that connects sub-occipital muscles which consist of the rectus capitis posterior minor muscle (RCPmi), rectus capitis posterior major muscle (RCPma), obliquus capitis inferior muscle (OCI) and nuchal ligament (NL) to the spinal dura mater (SDM), is described as the myodural bridge (MDB) in humans. The MDB is perceived as an essential anatomical structure and has been a subject of interest for clinicians. Studies have revealed that MDB may be related to the dynamic circulation of the cerebrospinal fluid (CSF) and a chronic cervicogenic headache. To date, the MDB is identified as a universal, existing structure in mammals and it exists in other vertebrates as well, such as Gallus domesticus and Rock pigeons in Avifauna, Siamese crocodile and Trachemys scripta elegans in Reptile. The current study is to further analyze different structures features of the MDB in sundry classes and provide the anatomical basis for functional studies. The JapaLura Splendida is the most common species in Lacertiformes, Reptilia. So we chose it as the experimental object to supply the morphological study of the MDB in Reptilia. Methods The study was based on gross anatomical dissection, thick sheet section, histological staining to observe the structural characteristics of the post-occipital area of twenty JapaLura Splendidas and the existence of the MDB. Results The deep post-occipital muscles were composed of the rectus capitis dorsal muscle (RCD) and the obliquus capital posterior (OCP) muscle. The RCD was merged by the rectus capitis dorsal major muscle (RCDma), the rectus capitis dorsal minor muscle (RCDmi) and the obliquus capitis anterior muscle (OCA). In the atlanto-occipital space, the dense fibrous bundles were found to originate from the ventral aspect of the RCD and run ventral, closely inserting into the SDM. In the atlanto-axial space, the dense fibrous bundles were found to originate from the ventral aspect of the OCP and run ventral, closely contacted with the SDM. These dense fibrous bundles were the collagen type I fibers with strong double refraction. Conclusion The result of this study indicates that the MDB is located between the post-occipital muscles and the SDM in JapaLura Splendida. The MDB of Japalura splendida may be related to the activities of the head and neck, and exert a physiological function similar to the MDB in humans.
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Due to the particularity of mental diseases, doctor-patient relationship in psychiatric medicine is a subject that needs to be paid attention to. This paper focused on the discussion of the model of doctor-patient relationship in psychiatric medicine from the perspective of constructing a harmonious doctor-patient relationship. Based on the Szasz & Hollender’s Model of Doctor-patient Relationship and combined with the characteristics of psychiatric medicine, this paper discussed the applicable doctor-patient relationship models, namely, the shared participation model, the guidance-cooperation model, the active-passive model, and the protective-constraint model. The specific application of the shared participation model, the guidance-cooperation model, and the active-passive model in the psychiatric medicine context were introduced in detail, and the reasons and characteristics of the protective-constraint model added on the basis of Szasz & Hollender’s Model of Doctor-patient Relationship were elaborated. Meanwhile, the realization paths of the protective-constraint model in clinical practice were further explored, which included evaluating the behavioral capacity and consciousness state of patients with mental disorders, obtaining informed consent, and standardizing the use of intervention rights and withdrawal mechanisms. The discussion of this model will promote the improvement of doctor-patient relationship and the development of psychiatric medicine.
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Objective:To explore the relationship between renal ultrasound shear wave elastography (SWE) and renal biopsy pathology in patients with primary glomerulonephritis (PGN).Methods:A total of 137 confirmed PGN patients admitted to Bin hai wan Central Hospital of Dongguan from January 2021 to March 2023 were selected as the study subjects for quantitative analysis of renal SWE and pathological examination of renal biopsy. The differences in renal elastic modulus among different pathological types, as well as the relationship between renal elastic modulus and pathological factors of renal biopsy and IgA nephropathy Lee grading, were analyzed.Results:IgA nephropathy, membranous nephropathy, and minimal degenerative glomerulopathy were the most common pathological types of PGN, and the difference in renal elastic modulus among the three was not statistically significant (all P>0.05). The maximum elastic modulus of the immune complex deposition positive group was greater than that of the negative group ( P<0.05). The average, median, and maximum elastic modulus of the group with severe degree of foot cell fusion were lower than those of the group with mild degree of foot process fusion (all P<0.05). The average and maximum values of elastic modulus in the group with mesangial eosinophil deposition were higher than those in the group without mesangial eosinophil deposition (all P<0.05), while the maximum value of elastic modulus in the group with pericystic fibrosis was lower than that in the group without pericystic fibrosis ( P<0.05). There was no statistically significant difference in the renal elastic modulus values among the Lee grading subgroups of 61 IgA nephropathy cases (all P>0.05), and there was no correlation between Lee grading and renal elastic modulus values ( P>0.05). There was no statistically significant correlation analysis between the renal elastic modulus value and the glomerular sclerosis rate, the degree of mesangial cell and matrix proliferation, and the percentage of renal tubular atrophy area (all P>0.05). Conclusions:SWE is expected to provide new imaging diagnostic indicators for monitoring pathological damage factors in PGN. SWE may not be able to efficiently monitor the pathological progression of IgA nephropathy.
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Diabetic kidney disease is a severe microvascular complication of diabetes characterized by complex etiology, diverse mechanisms, long course, and poor prognosis, posing a significant threat to patients′ quality of life. In recent years, research on gut microbiota has progressed deeper, and the concept of the gut-kidney axis emerges, introducing novel therapeutic concepts. This article provides an overview of the role of gut microbiota in the development of diabetic kidney disease and explores potential therapeutic strategies involving gut microbiota for the treatment of this condition.
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Neoadjuvant chemotherapy (NAC) has shown promising results in patients with locally advanced penile cancer. However, no consensus exists on its applications for locally advanced penile cancer. Thus, it is unclear which kind of chemotherapy regimen is the best choice. Consequently, a systematic search of PubMed, Web of Science, and EMBASE was performed in March 2021 to assess the efficacy and safety of NAC for the treatment of patients with locally advanced penile cancer. The Newcastle-Ottawa Scale was used to assess the risk of bias in each study. This study synthesized 14 published studies. The study revealed that patients who achieved an objective response to NAC obtained a better survival outcome compared with those who did not achieve an objective response. In addition, the objective response rates (ORRs) and pathological complete response (pCR) rates were 0.57 and 0.11, respectively. The incidence of grade ≥3 toxicity was 0.36. Subgroup analysis found that the ORR and pCR of the taxane-platinum (TP) regimen group performed better than those of the nontaxane-platinum (NTP) regimen group (0.57 vs 0.54 and 0.14 vs 0.07, respectively). Moreover, the TP regimen group had more frequent toxicity than the NTP regimen group (0.41 vs 0.26). However, further studies were warranted to confirm the findings.
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Humains , Mâle , Protocoles de polychimiothérapie antinéoplasique/usage thérapeutique , Traitement néoadjuvant/méthodes , Tumeurs du pénis/traitement médicamenteux , Platine , Résultat thérapeutiqueRésumé
Although anti-thrombotic therapy has been successful for prevention of deaths from acute myocardial infarction (MI), by far, there are few preventive and therapeutic options for ischemic heart failure (IHF) after MI. Qi-Tai-Suan (QTS) is an oleanolic acid (OA) derivative which once underwent a clinical trial for treating hepatitis. In this study, we investigated the potential cardioprotective effect of QTS on IHF. IHF mouse model was constructed by coronary artery ligation in male C57BL/6J mice, and the protective effects of QTS on IHF were examined by echocardiography measurement, histological and TUNEL analysis, etc. We found that QTS exhibited promising cardioprotective effect on IHF. QTS treatment significantly improved cardiac function of IHF mice and the symptoms of heart failure. Notably, QTS had much better oral bioavailability (F = 41.91%) in mice than its parent drug OA, and took effects mainly as its original form. Mechanistically, QTS ameliorated ischemic heart failure likely through suppression of cardiac apoptosis, inflammation and fibrosis. Taken together, QTS holds great promise as a preventive and therapeutic agent for ischemic heart failure and related diseases.
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Animaux , Mâle , Souris , Apoptose , Fibrose , Défaillance cardiaque/traitement médicamenteux , Inflammation/traitement médicamenteux , Souris de lignée C57BL , Ischémie myocardique/anatomopathologie , Acide oléanolique/pharmacologieRésumé
Objective To explore the expression profiles of circulating microRNA(miRNA)and potential markers for the diagnosis of adult fulminant myocarditis(FM). Methods The expression profiles of circulating miRNA were determined by microarray analysis and verified by real-time quantitative PCR.The key role of circulating miRNA in FM was determined via KEGG pathway enrichment.The correlations between miRNA and cardiac function parameters in patients with FM were analyzed.The receiver operating characteristic(ROC)curve was established to evaluate the sensitivity and specificity of circulating miRNA in the diagnosis of FM. Results Compared with healthy controls,the FM patients had up-regulated expression levels of miR-29b(t=18.925,P<0.001)and miR-125b(t=5.981,P=0.029)in the plasma.After treatment,the expression levels of miR-29b(t=12.943,P<0.001)and miR-125b(t=14.016,P<0.001)were significantly down-regulated.KEGG pathway enrichment showed that the targets of miR-29b were involved in inflammatory response and apoptosis pathways.The results of cell proliferation and apoptosis assay demonstrated the transfection of miR-29b mimic had a more significant inducing effect on cardiomyocyte apoptosis than that of miR-125b mimic(χ 2=6.168,P=0.047),whereas there was no significant difference in the inhibition of cell proliferation between the two groups(χ2=1.452,P=0.417).The expression levels of miR-29b and miR-125b were negatively correlated with left ventricular ejection fraction(r=-0.67,P=0.071;r=-0.49,P=0.003).They were positively correlated with cardiac troponin I level(r=0.61,P=0.019;r=0.52,P=0.016),interferon β level(r=0.42,P=0.014;r=0.36,P=0.021),and myocardial edema area(r=0.86,P=0.005;r=0.73,P=0.013).The ROC curve analysis demonstrated that miR-29b had higher sensitivity for the diagnosis of FM(93.6% vs.89.2%;t=0.896,P=0.795)and specificity(72.4% vs.59.6%;t=9.478,P=0.002)than miR-125b. Conclusion The circulating miR-29b may be a potential biomarker for the diagnosis of FM.
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Adulte , Humains , Marqueurs biologiques/métabolisme , MicroARN circulant/métabolisme , microARN/métabolisme , Myocardite/diagnostic , Débit systolique , Fonction ventriculaire gaucheRésumé
Objective To investigate the inhibitory effect of melatonin on the migration and invasion of gastric cancer cell and the underlying molecular mechanism. Methods Human gastric cancer SGC-7901 cells were treated with different concentrations of melatonin ( 0. 1, 1, 2 and 4 mmol/L ) for 24 hours, and the changes in the migration and invasion of gastric cancer cells were detected by scratch test and Transwell assay. The expressions of matrix metalloproteinase ( MMP) -2 and MMP-9 in the supernatant were detected by ELISA kit. The changes of MMP-2, MMP-9, intercellular cell adhesion molecule-1 ( ICAM-1 ) and CD44 expressions were detected by using Real-time PCR. The protein expressions of ICAM-1, CD44, p-P38, P38 and phosphorylated mitogen-activated protein kinase kinase ( p-MKK) 3/6 were detected by Western blotting. Results Melatonin inhibited the migration and invasion of gastric cancer cells in a dose- dependent manner. Compared with the blank control group, melatonin reduced the expression of MMP-2, MMP-9, ICAM-1 and CD44, and inhibited the expressions of p-P38, P38 and p-MKK3/6 in gastric cancer cells. Conclusion Melatonin inhibits the migration and invasion of gastric cancer cells by inhibiting the expressions of MMP-2, MMP-9, ICAM-1 and CD44. Inhibition may be related to the p38MAPK signaling pathway.
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Objective:To explore the influencing factors of satisfaction with thyroid nodule fine needle biopsy (FNA).Methods:The ultrasonic images of 88 patients with thyroid nodules (95 nodules) in Dongguan Binhai Bay Central Hospital from September 2016 to January 2019 were analyzed retrospectively. According to Bethesda cytological classification standard, Bethesda class Ⅰ cytological specimens were defined as unsatisfactory, and Bethesda class Ⅱ-Ⅵ cytological specimens were defined as satisfactory. The thyroid nodule location, composition, internal echo, morphology, aspect ratio, calcification, blood supply mode and American College of Radiology Thyroid Imaging Reporting and Data System(ACR TI-RADS) classification on the satisfaction rate of thyroid nodule FNA samples were evaluated, and then the meaningful influencing factors were analyzed by logistic regression.Results:The overall satisfaction of the sample in this study was 84.2% (80/95). The results of univariate analysis showed that the location, aspect ratio and ACR TI-RADS classification of thyroid nodules were the related factors affecting the satisfaction of FNA specimens of thyroid nodules, with statistically significant difference ( P<0.05). Logistic regression analysis showed that the aspect ratio of thyroid nodules was an independent factor affecting the satisfaction of FNA specimens of thyroid nodules ( OR=13.5, P=0.02). Conclusions:The main factor affecting the satisfaction rate of FNA specimens of thyroid nodules may lie in the characteristics of the aspect ratio of the nodules themselves. Optimizing the puncture route may help to reduce the dissatisfaction rate of FNA specimens of thyroid nodules.
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Biochemical recurrence (BCR) is important for measuring the oncological outcomes of patients who undergo radical prostatectomy (RP). Whether transurethral resection of the prostate (TURP) has negative postoperative effects on oncological outcomes remains controversial. The primary aim of our retrospective study was to determine whether a history of TURP could affect the postoperative BCR rate. We retrospectively reviewed patients with prostate cancer (PCa) who had undergone RP between January 2009 and October 2017. Clinical data on age, prostate volume, serum prostate-specific antigen levels (PSA), biopsy Gleason score (GS), metastasis stage (TNM), D'Amico classification, and American Society of Anesthesiologists (ASA) classification were collected. Statistical analyses including Cox proportional hazard models and sensitivity analyses which included propensity score matching, were performed, and the inverse-probability-of-treatment-weighted estimator and standardized mortality ratio-weighted estimator were determined. We included 1083 patients, of which 118 had a history of TURP. Before matching, the non-TURP group differed from the TURP group with respect to GS (P= 0.047), prostate volume (mean: 45.19 vs 36.00 ml, P < 0.001), and PSA level (mean: 29.41 vs 15.11 ng ml-1, P= 0.001). After adjusting for age, PSA level, T stage, N stage, M stage, and GS, the TURP group showed higher risk of BCR (hazard ratio [HR]: 2.27, 95% confidence interval [CI]: 1.13-3.94, P= 0.004). After matching (ratio 1:4), patients who underwent TURP were still more likely to develop BCR according to the adjusted propensity score (HR: 2.00, 95% CI: 1.05-3.79, P= 0.034). Among patients with PCa, those with a history of TURP were more likely to develop BCR after RP.
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Sujet âgé , Humains , Mâle , Adulte d'âge moyen , Grading des tumeurs , Récidive tumorale locale/anatomopathologie , Antigène spécifique de la prostate/sang , Tumeurs de la prostate/chirurgie , Études rétrospectives , Facteurs de risque , Résection transuréthrale de prostate/effets indésirablesRésumé
@#【Objective】To determine the effects of an open-lung strategy(OLS)comprising moderate positive end- expiratory pressure (PEEP) and intermittent recruitment manoeuvres(RMs) on plasma levels of lung epithelial injury markers[i.e. soluble receptor for advanced glycation end products(sRAGE)and Clara cell protein(CC16)]during low- tidal-volume ventilation for surgery.【Methods】One hundred patients who were undergoing laparoscopic colorectal cancer resection under low-tidal-volume ventilation were enrolled in this study. They were randomly assigned(1∶1)to the OLS group(using PEEP of 6~8 cmH2O and intermittent RM),or the NOLS group(without using PEEP and RM). Blood samples were taken before anesthesia induction(T1),immediately after surgery(T2)and the postoperative day 3(T3)to measure the plasma concentrations of sRAGE and CC16. 【Results】 Significant differences were not observed in the concentrations of sRAGE and CC16 at T1,T2 and T3 between the two groups(all P > 0.05). For all the enrolled patients, the concentrations of sRAGE at T2 and T3 were higher than that at T1,the concentration of sRAGE at T3 was higher than that at T2,and the concentration of CC16 at T3 was higher than that at T1 and T2(all P < 0.05).【Conclusions】In patients under general anesthesia with low-tidal-volume ventilation,the using of an OLS comprising medium PEEP and intermittent RMs can not alter plasma levels of lung epithelial injury markers(sRAGE and CC16)in three days after surgery.
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Objective To forecast the risk distribution of inter-animal plague in Meriones unguiculatus effectively and provide scientific evidence for prevention and control of inter-animal plague,through studying the correlation between meteorological and environmental factors and inter-animal plague in Meriones unguiculatus.Methods Positive data of plague bacterial culture in 30 epidemic source areas of Merioncs unguiculatus in the Inner Mongolia plateau from 2005 to 2018,including detecting time,number of bacteria,latitude and longitude or detailed location,host type,were from the Chinese Disease Prevention and Control System Plague Prevention Management Information System and related professional institutions for plague prevention and treatment.Logistic regression was used to explore the relationship between the inter-animal plague and climate-related risk factors.The Maximum Entropy (Maxent) model was used to predict the habitat distributions of inter-animal plague,and the receiver operating characteristic (ROC) curve was used to vzlidate the model.Results There were 11 climatic factors including annual mean temperature,isothermality,temperature seasonality,mean temperature of driest quarter,mean temperature of warmest quarter,mean temperature of coldest quarter,annual precipitation,precipitation seasonality,globcover,normalized difference vegetation index and slope,were related to the outbreak of plague among Meriones unguiculatus and included in the model (OR =1.302,0.455,0.957,0.9130,4.864,0.179,0.986,1.126,0.992,0.981,0.721,P < 0.01).The increase of annual mean temperature,mean temperature of warmest quarter and precipitation seasonality will increase the risk of animal plague in the plague foci of Meriones unguiculatus;the increase of isothermality,temperature seasonality,mean temperature of driest quarter,mean temperature of coldest quarter,annual precipitation,globcover,normalized difference vegetation index,and slope will reduce the risk of animal plague in the plague foci of Meriones unguiculatus.The areas under the curve (AUCs) of the Maxent model training data and test data were 0.988 and 0.985,the prediction effect of the model was better.The habitat distribution of Meriones unguiculatus plague mainly concentrated in the central and northem Ulanqabplateau,Ordos plateau,and eastern Hetao plain.Conclusions The use of Maxent model and climate data can predict the potential risks and spatial distribution of animal plague in Meriones unguiculatus;the results are accurate and reliable.
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Urease decomposes urea to ammonia, and has application potential in agriculture and medical treatment. Urease proteins include structural proteins (UreA, UreB and UreC) and accessory proteins (UreD/UreH, UreE, UreF and UreG), each of them has its own unique role in urease maturation. The structural proteins form the active center of urease, and the accessory proteins are responsible for the delivery of nickel. We review here the structure and function of bacterial urease complexes, and how each protein interacts to complete the activation process. We hope to provide theoretical basis for the regulation of urease activity and the development of urease inhibitors.
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Protéines bactériennes , Nickel , Urease , MétabolismeRésumé
Ginsenoside Rh_2,firstly isolated from red ginseng,is protopanaxadiol type of steroidal saponin. Rh_2 possessed variety of activities,but bioavailability of oral administration Rh_2 was extremely low due to poor absorption. Moreover,ginsenoside Rh_2 exhibited toxicity on human normal cells. Therefore,to improve stronger anti-tumor activity and attenuate toxicity,it was essential to design and optimize chemical structure of ginsenoside Rh_2. Through n-octanoylchloride modifications,a novel ester derivative of ginsenoside Rh_2 named caprylic acid monoester of Rh_2( C-Rh_2) was designed and synthesized. Structure of novel ginsenoside derivative was identified by1 D and 2 D NMR,as well as ESI-MS analyses. Anti-tumor effect of C-Rh_2 was tested on H22 tumor bearing mice. C-Rh_2 displayed certain anti-tumor activities and exhibited less toxicity than Rh_2. In the present study,C-Rh_2 as ester form of ginsenoside Rh_2 showed better anti-tumor activity and less toxicity,but the specific mechanism needs further investigation.
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Animaux , Souris , Caprylates , Ginsénosides , Pharmacologie , Structure moléculaire , Tumeurs expérimentales , Traitement médicamenteux , SaponinesRésumé
BACKGROUND@#Endothelial dysfunction, the initial pathogenic factor in atherosclerosis, can be alleviated via transient limb ischemia. We observed the effects of regular transient limb ischemia (RTLI) on atherosclerosis in hypercholesterolemic rabbits.@*METHODS@#Twenty-eight rabbits were randomized to control, cholesterol, sham, ischemia groups (n = 7 each) between October 2010 and March 2011. They were fed a normal diet in the control group and hypercholesterolemic diet in other groups for 12 weeks. Six cycles of RTLI were performed once per day on the ischemia group. Serum samples were prepared to measure the total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C) before the experiment (W0), at the end of weeks 4, 8, 12 (W4, W8, W12). The whole aorta was harvested at W12 and stained using Sudan IV to identify the plaque. The plaque area was measured using Image J. Results were analyzed by analysis of variance or rank sum test.@*RESULTS@#Concentrations of TC in the cholesterol group were higher than those in the control group at W4 (29.60 [23.75, 39.30] vs. 1.00 [0.80, 1.55], Z = -2.745, P = 0.006), W8 (41.78 [28.08, 47.37] vs. 0.35 [0.10, 0.68], Z = -2.739, P = 0.006), W12 (48.32 [40.04, 48.95] vs. 0.61 [0.50, 0.86], Z = -2.739, P = 0.006). Similar results were obtained for HDL-C and LDL-C. Serum concentrations of TC, HDL-C, and LDL-C in the hypercholesterolemic groups had no differences (all P > 0.05). The percentage of plaque area in the cholesterol group was higher than that in the control group (47.22 ± 23.89% vs. 0, Z = -2.986, P = 0.003). Square root of the percentage of plaque area was smaller in the ischemia group than that in the cholesterol (0.44 ± 0.13 vs. 0.67 ± 0.18, P = 0.014) or sham groups (0.44 ± 0.13 vs. 0.61 ± 0.12, P = 0.049).@*CONCLUSION@#In hypercholesterolemic rabbits, RTLI might prevent atherosclerosis progression by reducing the percentage of plaque area.
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Animaux , Mâle , Lapins , Athérosclérose , Sang , Cholestérol , Sang , Cholestérol HDL , Sang , Cholestérol LDL , Sang , Membres , Anatomopathologie , Hypercholestérolémie , Sang , Accident ischémique transitoire , Sang , Postconditionnement ischémique , Méthodes , Triglycéride , SangRésumé
Objective To investigate the relationship between prostate volume and postoperative stress urinary incontinence (SUI) in the elderly benign prostatic hyperplasia (BPH) patients following holmium laser enucleation of the prostate (HoLEP). Methods A retrospective analysis was performed on clinical data of 110 elderly (age ≥60 years) BPH patients who underwent HoLEP in Grand Hospital of Jincheng in Shanxi between 2014 and 2018. In these patients, preoperative transrectal ultrasonography revealed that the prostate volume was 21-198(74.53 ± 31.26) ml. According to prostate volume, the patients were allocated to large prostate volume group (prostate volume≥80 ml) , intermediate prostate volume group (40 ml<prostate volume<80 ml) and small prostate volume group (prostate volume≤40 ml). All patients underwent the HoLEP, the incidence of postoperative SUI was compared among the three groups after withdrawal of stenting catheters. Results After HoLEP, 74 patients were uneventful, while 36 patients experienced the postoperative SUI. No perpetual SUI patient was found after follow-up for 1 week to 6 months. The incidence of postoperative SUI after HoLEP was positively correlated with prostate volume (ri0.331, P<0.05). The 36 elderly BPH patients with postoperative SUI accounted for 51.35% (19/37), 33.33% (12/36) and 13.51% (5/37), respectively in large, intermediate and small prostate volume groups, with statistically significant difference among three groups after Kruskal-Walls test (χ2 = 11.930, P < 0.05). Conclusions The incidence of postoperative stress urinary incontinence after HoLEP of the prostate is positively correlated with prostate volume in the elderly BPH patients.