Humans

人类
  • 文章类型: Journal Article
    同胞物种之间的时空关联支撑了生物相互作用,结构生态组合,维持生态系统的功能和稳定。然而,种间时空关联对人类活动的复原力仍然知之甚少,特别是在山区森林中,人为影响通常很普遍。这里,我们将上下文相关的联合物种分布模型应用于喜马拉雅东部全球生物多样性热点的系统相机陷阱调查数据集,以了解山区森林中突出的人类活动如何影响陆地哺乳动物群落中的物种关联。在43,163个相机天的努力中,我们从322个站点获得了10,388个独立的17个重点物种(12个食肉动物和5个有蹄类动物)的独立检测。我们发现,与人类修饰水平较高(87%)和人类存在(83%)的栖息地相比,人类修饰水平较高(64%)和人类存在(65%)的栖息地的正相关发生率更高。我们还发现,在人类干扰水平增加时,成对相遇时间显着减少,对应于物种对之间更频繁的相遇。我们的发现表明,人类活动可以将哺乳动物推到更频繁的相遇和联想中,这可能会影响野生动物的共存和持久性,具有潜在的深远的生态后果。
    Spatial and temporal associations between sympatric species underpin biotic interactions, structure ecological assemblages, and sustain ecosystem functioning and stability. However, the resilience of interspecific spatiotemporal associations to human activity remains poorly understood, particularly in mountain forests where anthropogenic impacts are often pervasive. Here, we applied context-dependent Joint Species Distribution Models to a systematic camera-trap survey dataset from a global biodiversity hotspot in eastern Himalayas to understand how prominent human activities in mountain forests influence species associations within terrestrial mammal communities. We obtained 10,388 independent detections of 17 focal species (12 carnivores and five ungulates) from 322 stations over 43,163 camera days of effort. We identified a higher incidence of positive associations in habitats with higher levels of human modification (87%) and human presence (83%) compared to those located in habitats with lower human modification (64%) and human presence (65%) levels. We also detected a significant reduction of pairwise encounter time at increasing levels of human disturbance, corresponding to more frequent encounters between pairs of species. Our findings indicate that human activities can push mammals together into more frequent encounters and associations, which likely influences the coexistence and persistence of wildlife, with potential far-ranging ecological consequences.
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  • 文章类型: Journal Article
    葡萄膜炎患儿发生白内障的长期估计风险尚不清楚。
    描述与葡萄膜炎患儿白内障发展相关的因素。
    这项队列研究使用国际TriNetX数据库,从2002年1月1日至2022年12月31日招募有和没有葡萄膜炎的儿科患者。非葡萄膜炎队列由随机选择的对照患者组成,这些患者的年龄相匹配,性别,种族和民族,和特定的合并症。
    葡萄膜炎的诊断,使用诊断代码识别。
    主要结果是葡萄膜炎组与非葡萄膜炎对照组相比患白内障的风险,报告了风险比(HR)和95%CI。
    共有22687例小儿葡萄膜炎患者(平均[SD]年龄,10.3[5.6]岁;54.2%男性)和22687名没有葡萄膜炎的对比者(平均[SD]年龄,10.3[5.6]岁;54.5%男性)参加了研究。在患有葡萄膜炎的儿科患者中,白内障的风险增加了,随访时间长达20年(HR,17.17;95CI,12.90-22.80)自指数日起。亚组分析显示,各年龄组的白内障风险升高:0至6岁(HR,19.09;95%CI,10.10-36.00),7至12年(HR,27.16;95%CI,15.59-47.20),和13到18岁(人力资源,13.39;95%CI,8.84-20.30);女性(HR,13.76;95%CI,9.60-19.71)和男性(HR,11.97;95%CI,8.47-16.91);亚洲(HR,13.80;95%CI,3.28-58.07),黑人或非裔美国人(HR,10.41;95%CI,5.60-19.36),和怀特(HR,15.82;95%CI,11.05-22.60)种族。此外,在有和没有免疫抑制剂病史的人群中也观察到白内障风险增加(与:HR,26.52[95%CI,16.75-41.90];无:HR,17.69[95%CI:11.39-27.40]),类固醇滴眼液使用史(与:HR,29.51[95%CI,14.56-59.70];无:HR,16.49[95%CI,11.92-22.70]),和眼内手术史(与:HR,11.07[95CI,4.42-27.71];无:HR,14.49[95%CI,10.11-20.70])。
    在这项针对小儿葡萄膜炎患者的队列研究中,与没有葡萄膜炎的儿科患者相比,葡萄膜炎诊断后白内障的风险升高。研究结果表明,应监测患有葡萄膜炎的小儿患者的白内障发展。
    UNASSIGNED: The long-term estimated risk of development of cataracts among pediatric patients with uveitis is not clear.
    UNASSIGNED: To describe factors associated with the development of cataracts among pediatric patients with uveitis.
    UNASSIGNED: This cohort study used the international TriNetX database to enroll pediatric patients with and without uveitis from January 1, 2002, to December 31, 2022. The nonuveitis cohort consisted of randomly selected control patients matched by age, sex, race and ethnicity, and specific comorbidities.
    UNASSIGNED: Diagnosis of uveitis, identified using diagnostic codes.
    UNASSIGNED: The primary outcome was the risk of developing cataracts among the uveitis group compared with the nonuveitis comparison group, with hazard ratios (HRs) and 95% CIs reported.
    UNASSIGNED: A total of 22 687 pediatric patients with uveitis (mean [SD] age, 10.3 [5.6] years; 54.2% male) and 22 687 comparators without uveitis (mean [SD] age, 10.3 [5.6] years; 54.5% male) were enrolled in the study. The risk of cataracts was increased among pediatric patients with uveitis up to a follow-up duration of 20 years (HR, 17.17; 95%CI, 12.90-22.80) from the index date. Subgroup analyses revealed an elevated cataract risk across age groups: 0 to 6 years (HR, 19.09; 95% CI, 10.10-36.00), 7 to 12 years (HR, 27.16; 95% CI, 15.59-47.20), and 13 to 18 years (HR, 13.39; 95% CI, 8.84-20.30); both female sex (HR, 13.76; 95% CI, 9.60-19.71) and male sex (HR, 11.97; 95% CI, 8.47-16.91); and Asian (HR, 13.80; 95% CI, 3.28-58.07), Black or African American (HR, 10.41; 95% CI, 5.60-19.36), and White (HR, 15.82; 95% CI, 11.05-22.60) race. Furthermore, increased cataract risks were also observed among those with and without a history of immunosuppressive agents (with: HR, 26.52 [95% CI, 16.75-41.90]; without: HR, 17.69 [95% CI: 11.39-27.40]), a history of steroid eye drop use (with: HR, 29.51 [95% CI, 14.56-59.70]; without: HR, 16.49 [95% CI, 11.92-22.70]), and a history of intraocular procedures (with: HR, 11.07 [95%CI, 4.42-27.71]; without: HR, 14.49 [95% CI, 10.11-20.70]).
    UNASSIGNED: In this cohort study of pediatric patients with uveitis, an elevated risk of cataracts following a uveitis diagnosis was found compared with pediatric patients without uveitis. The findings suggest that pediatric patients with uveitis should be monitored for cataract development.
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  • 文章类型: Journal Article
    目的:探讨特质焦虑人格在生存质量(QoL)与死亡焦虑(DA)关系中的中介作用。以及检验社会支持在中介模式中的调节作用。
    方法:死亡焦虑量表,生活质量量表,状态-特质焦虑量表,采用社会支持评定量表对588名晚期癌症患者的家庭照顾者进行测量。然后,我们构建了一个适度的调解模型。
    结果:QoL的存在与DA呈负相关(β=-0.67,p<0.01)。特质焦虑人格部分介导了QoL与DA之间的关系(间接效应β=-0.08,p<0.01)。社会支持调节了“QoL→特质焦虑人格→DA”的中介路径的前段和后段,以及QoL与DA之间的直接关系。在社会支持水平低的护理人员中,特质焦虑人格的中介效应系数高于0.25(95%置信区间(CI):0.059-0.182),与拥有高水平社会支持的护理人员相比,其中特质焦虑人格的中介效应系数为0.11(95%CI:0.029-0.072)。
    结论:QoL与DA的风险增加直接相关,而与DA的间接相关则是通过增加护理人员的特质焦虑人格风险。社会支持可以调节特质焦虑人格的中介作用以及QoL与DA之间的关系。在遇到QoL减少的护理人员中预防DA的干预策略应侧重于减少特质焦虑人格和社会支持。
    OBJECTIVE: To explore the mediating role of trait anxious personality in the association between quality of life (QoL) and death anxiety (DA), as well as to test the moderating effect of social support in the mediation model.
    METHODS: The Death Anxiety Scale, Quality of Life Scale, State-Trait Anxiety Scale, and Social Support Rating Scale were used to measure 588 family caregivers of advanced cancer patients. We then constructed a moderated mediation model.
    RESULTS: The presence of QoL was negatively associated with DA (β =  - 0.67, p < 0.01). Trait anxious personality partially mediated the relationship between QoL and DA (indirect effect β =  - 0.08, p < 0.01). Social support moderated both the antecedent and subsequent segments of the mediating paths of \"QoL → trait anxious personality → DA\" and the direct relationship between QoL and DA. Among caregivers with a low level of social support, the mediating effect coefficient of trait anxious personality was higher at 0.25 (95% confidence interval (CI): 0.059-0.182), in contrast to caregivers with a high level of social support, where the mediating effect coefficient of trait anxious personality was 0.11 (95% CI: 0.029-0.072).
    CONCLUSIONS: QoL is directly associated with an increased risk of DA and indirectly related to DA by increasing the risk of trait anxious personality among caregivers. Social support can moderate the mediating effect of trait anxious personality and the relationship between QoL and DA. The intervention strategy for preventing DA among caregivers who have encountered QoL reduction should focus on reducing trait anxious personality and social support.
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  • 文章类型: Journal Article
    目的:乳腺癌及其雌激素受体(ER)亚型与中性粒细胞减少和粒细胞缺乏之间的因果关系尚不清楚。
    方法:在双样本孟德尔随机化(MR)中,我们使用方差逆加权(IVW),贝叶斯加权MR(BWMR),MR-Egger,加权中位数,简单模式,和加权模式方法分析ER阳性乳腺癌的因果关系,ER阴性乳腺癌,整体乳腺癌,以及药物诱导的中性粒细胞减少和粒细胞缺乏症。为了验证结果,我们再次使用来自不同数据库的中性粒细胞减少的GWAS数据进行分析.在多变量MR(MVMR)中,我们评估了ER阳性和ER阴性乳腺癌对因果关系的独立影响.
    结果:双样本MR分析显示ER阳性乳腺癌之间存在因果关系(IVW比值比(OR)=1.319,P=7.580×10-10),ER阴性乳腺癌(OR=1.285,P=1.263×10-4),整体乳腺癌(OR=1.418,P=2.123×10-13),和药物诱导的中性粒细胞减少与ER阳性乳腺癌之间的因果关系(OR=1.349,P=1.402×10-7),ER阴性乳腺癌(OR=1.235,P=7.615×10-3),整体乳腺癌(OR=1.429,P=9.111×10-10),和中性粒细胞减少症.同样,ER阳性乳腺癌(OR=1.213,P=5.350×10-8),ER阴性乳腺癌(OR=1.179,P=1.300×10-3),总体乳腺癌(OR=1.275,P=8.642×10-11)也与粒细胞缺乏有因果关系。MVMR分析显示ER阳性乳腺癌与药物性中性粒细胞减少有因果关系(OR=1.233,P=4.188×10-4)。中性粒细胞减少症(OR=1.283,P=6.363×10-4),粒细胞缺乏(OR=1.142,P=4.549×10-3)。异质性分析和多效性检验表明我们的结果是可靠的。
    结论:我们的研究为乳腺癌及其雌激素受体亚型与中性粒细胞减少症之间的因果关系提供了遗传学证据。在临床实践中,除了关注治疗因素,应额外注意乳腺癌患者,以避免严重的中性粒细胞减少。
    OBJECTIVE: The causal relationship between breast cancer and its estrogen receptor (ER) subtypes and neutropenia and agranulocytosis is unclear.
    METHODS: In two-sample Mendelian randomization (MR), we used inverse variance weighting (IVW), Bayesian weighted MR (BWMR), MR-Egger, weighted median, simple mode, and weighted mode methods to analyze causality for ER-positive breast cancer, ER-negative breast cancer, overall breast cancer, and drug-induced neutropenia and agranulocytosis. To validate the results, we performed the analysis again using GWAS data on neutropenia from different databases. In multivariable MR (MVMR), we assessed the independent effects of ER-positive and ER-negative breast cancer on causality.
    RESULTS: Two-sample MR analysis showed a causal relationship between ER-positive breast cancer (IVW odds ratio (OR) = 1.319, P = 7.580 × 10-10), ER-negative breast cancer (OR = 1.285, P = 1.263 × 10-4), overall breast cancer (OR = 1.418, P = 2.123 × 10-13), and drug-induced neutropenia and a causal relationship between ER-positive breast cancer (OR = 1.349, P = 1.402 × 10-7), ER-negative breast cancer (OR = 1.235, P = 7.615 × 10-3), overall breast cancer (OR = 1.429, P = 9.111 × 10-10), and neutropenia. Similarly, ER-positive breast cancer (OR = 1.213, P = 5.350 × 10-8), ER-negative breast cancer (OR = 1.179, P = 1.300 × 10-3), and overall breast cancer (OR = 1.275, P = 8.642 × 10-11) also had a causal relationship with agranulocytosis. MVMR analysis showed that ER-positive breast cancer remained causally associated with drug-induced neutropenia (OR = 1.233, P = 4.188 × 10-4), neutropenia (OR = 1.283, P = 6.363 × 10-4), and agranulocytosis (OR = 1.142, P = 4.549 × 10-3). Heterogeneity analysis and pleiotropy test showed that our results were reliable.
    CONCLUSIONS: Our study provides genetic evidence for a causal association between breast cancer and its estrogen receptor subtypes and neutropenia. In clinical practice, in addition to focusing on therapeutic factors, additional attention should be given to breast cancer patients to avoid severe neutropenia.
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  • 文章类型: Journal Article
    目的:本研究旨在开发和验证用于诊断上颌侧切牙(MLIs)的神经根沟(RG)的预测列线图,整合人口统计信息,解剖学测量,和锥形束计算机断层扫描(CBCT)数据,以在诉诸CBCT扫描之前根据临床观察诊断MLI中的RG。
    方法:来自口腔医学学校和医院的正畸患者的回顾性队列,武汉大学,被分析,包括人口特征,摄影解剖学评估,和CBCT诊断。该队列分为开发组和验证组。单变量和多变量逻辑回归分析确定了RG的重要预测因子,它为列线图的开发提供了信息。使用接收器工作特性分析验证了该列线图的性能。
    结果:该研究包括381名患者(64.3%为女性),评估了760名MLI,在26.25%的MLI中存在RG。列线图包含了RG存在的四个重要的解剖学预测因子,在发展队列中曲线下面积为0.75,在验证队列中曲线下面积为0.71,显示出实质性的预测功效。
    结论:成功建立了MLIs中RG诊断的列线图。该工具提供了实用的解剖预测指标清单,以改善临床实践中的诊断过程。
    结论:开发的列线图提供了一种新颖的,在诊断和治疗策略中增强RG的MLIs检测和治疗计划的循证工具。
    OBJECTIVE: This study aimed to develop and validate a predictive nomogram for diagnosing radicular grooves (RG) in maxillary lateral incisors (MLIs), integrating demographic information, anatomical measurements, and Cone Beam Computed Tomography (CBCT) data to diagnose the RG in MLIs based on the clinical observation before resorting to the CBCT scan.
    METHODS: A retrospective cohort of orthodontic patients from the School and Hospital of Stomatology, Wuhan University, was analyzed, including demographic characteristics, photographic anatomical assessments, and CBCT diagnoses. The cohort was divided into development and validation groups. Univariate and multivariate logistic regression analyses identified significant predictors of RG, which informed the development of a nomogram. This nomogram\'s performance was validated using receiver operating characteristic analysis.
    RESULTS: The study included 381 patients (64.3% female) and evaluated 760 MLIs, with RG present in 26.25% of MLIs. The nomogram incorporated four significant anatomical predictors of RG presence, demonstrating substantial predictive efficacy with an area under the curve of 0.75 in the development cohort and 0.71 in the validation cohort.
    CONCLUSIONS: A nomogram for the diagnosis of RG in MLIs was successfully developed. This tool offers a practical checklist of anatomical predictors to improve the diagnostic process in clinical practice.
    CONCLUSIONS: The developed nomogram provides a novel, evidence-based tool to enhance the detection and treatment planning of MLIs with RG in diagnostic and therapeutic strategies.
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  • 文章类型: Journal Article
    分泌的趋化因子在靶组织中形成浓度梯度,以控制免疫细胞响应炎症刺激的迁移方向和模式;然而,梯度是如何形成的还有很多争议。硫酸乙酰肝素(HS)与趋化因子结合并调节其活性。在这项研究中,我们研究了HS在已知与HS结合的CCL5的梯度形成和化学引诱物活性中的作用。CCL5与肝素进行液-液相分离,形成梯度,使用固定在肝素珠上的CCL5证实了这一点。通过Transwell测定,在CHO-K1(野生型)和CHO-677(缺乏HS)细胞中建立了HS在CCL5梯度形成中的生物学意义。人外周血细胞的Transwell测定进一步证明了HS对CCL5化学引诱物活性的影响。最后,通过突变CCL5(缺乏肝素结合序列)或通过向野生型CCL5添加肝素,向小鼠腹膜注射趋化因子显示炎性细胞募集减少。我们的实验数据表明,CCL5与HS的共相分离建立了特定的趋化因子浓度梯度以触发定向细胞迁移。结果值得对其他肝素结合趋化因子进行进一步研究,并可以更详细地了解疾病过程和新的治疗策略。
    Secreted chemokines form concentration gradients in target tissues to control migratory directions and patterns of immune cells in response to inflammatory stimulation; however, how the gradients are formed is much debated. Heparan sulfate (HS) binds to chemokines and modulates their activities. In this study, we investigated the roles of HS in the gradient formation and chemoattractant activity of CCL5 that is known to bind to HS. CCL5 and heparin underwent liquid-liquid phase separation and formed gradient, which was confirmed using CCL5 immobilized on heparin-beads. The biological implication of HS in CCL5 gradient formation was established in CHO-K1 (wild-type) and CHO-677 (lacking HS) cells by Transwell assay. The effect of HS on CCL5 chemoattractant activity was further proved by Transwell assay of human peripheral blood cells. Finally, peritoneal injection of the chemokines into mice showed reduced recruitment of inflammatory cells either by mutant CCL5 (lacking heparin-binding sequence) or by addition of heparin to wild-type CCL5. Our experimental data propose that co-phase separation of CCL5 with HS establishes a specific chemokine concentration gradient to trigger directional cell migration. The results warrant further investigation on other heparin-binding chemokines and allows for a more elaborate insight into disease process and new treatment strategies.
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  • 文章类型: Journal Article
    哮喘是一种慢性肺病,在全世界范围内流行。气道壁的结构改变,称为“气道重塑”,被证明是慢性哮喘期间气道功能障碍的核心因素。叉头盒转录因子FOXK2是糖酵解的关键调节因子,与肺纤维化相关的代谢重编程途径。然而,FOXK2在哮喘中的作用有待进一步探讨.在这项研究中,通过卵清蛋白(OVA)致敏和重复OVA攻击诱导慢性哮喘小鼠。FOXK2在OVA小鼠的肺中上调,并且在腺病毒介导的FOXK2沉默后下调。肺部炎症,支气管周围胶原沉积,FOXK2敲低后,OVA小鼠的糖酵解明显减弱。此外,人支气管上皮细胞(BEAS-2B)中FOXK2和SIRT2的表达在TGF-β1刺激后逐渐上调,在FOXK2敲低后下调。此外,FOXK2的功能丧失显著抑制了TGF-β1诱导的BEAS-2B细胞上皮间质转化(EMT)和糖酵解,表现为EMT标记和糖酵解酶的表达改变。糖酵解抑制剂2-脱氧-d-葡萄糖(2-DG)抑制TGF-β1诱导细胞的EMT,使糖酵解成为EMT的驱动力。验证了FOXK2与SIRT2的结合,和SIRT2过表达阻断了FOXK2敲低介导的TGF-β1处理细胞中EMT和糖酵解的抑制,这表明FOXK2以SIRT2依赖性方式调节TGF-β1处理的细胞中的EMT和糖酵解。总的来说,这项研究强调了FOXK2敲低对慢性哮喘气道重塑的保护作用.
    Asthma is a chronic pulmonary disease with the worldwide prevalence. The structural alterations of airway walls, termed as \"airway remodeling\", are documented as the core contributor to the airway dysfunction during chronic asthma. Forkhead box transcription factor FOXK2 is a critical regulator of glycolysis, a metabolic reprogramming pathway linked to pulmonary fibrosis. However, the role of FOXK2 in asthma waits further explored. In this study, the chronic asthmatic mice were induced via ovalbumin (OVA) sensitization and repetitive OVA challenge. FOXK2 was upregulated in the lungs of OVA mice and downregulated after adenovirus-mediated FOXK2 silencing. The lung inflammation, peribronchial collagen deposition, and glycolysis in OVA mice were obviously attenuated after FOXK2 knockdown. Besides, the expressions of FOXK2 and SIRT2 in human bronchial epithelial cells (BEAS-2B) were increasingly upregulated upon TGF-β1 stimulation and downregulated after FOXK2 knockdown. Moreover, the functional loss of FOXK2 remarkably suppressed TGF-β1-induced epithelial-mesenchymal transition (EMT) and glycolysis in BEAS-2B cells, as manifested by the altered expressions of EMT markers and glycolysis enzymes. The glycolysis inhibitor 2-deoxy-d-glucose (2-DG) inhibited the EMT in TGF-β1-induced cells, making glycolysis a driver of EMT. The binding of FOXK2 to SIRT2 was validated, and SIRT2 overexpression blocked the FOXK2 knockdown-mediated inhibition of EMT and glycolysis in TGF-β1-treated cells, which suggests that FOXK2 regulates EMT and glycolysis in TGF-β1-treated cells in a SIRT2-dependnet manner. Collectively, this study highlights the protective effect of FOXK2 knockdown on airway remodeling during chronic asthma.
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  • 文章类型: Journal Article
    Wild rodents serve as reservoirs for Cryptosporidium and are overpopulated globally. However, genetic data regarding Cryptosporidium in these animals from China are limited. Here, we have determined the prevalence and genetic characteristics of Cryptosporidium among 370 wild rodents captured from three distinct locations in the southern region of Zhejiang Province, China. Fresh feces were collected from the rectum of each rodent, and DNA was extracted from them. The rodent species was identified by PCR amplifying the vertebrate cytochrome b gene. Cryptosporidium was detected by PCR amplification and amplicon sequencing the small subunit of ribosomal RNA gene. Positive samples of C. viatorum and C. parvum were further subtyped by analyzing the 60-kDa glycoprotein gene. A positive Cryptosporidium result was found in 7% (26/370) of samples, involving five rodent species: Apodemus agrarius (36), Niviventer niviventer (75), Rattus losea (18), R. norvegicus (155), and R. tanezumi (86). Their respective Cryptosporidium positive rates were 8.3%, 5.3%, 11.1%, 7.1%, and 7.0%. Sequence analysis confirmed the presence of three Cryptosporidium species: C. parvum (4), C. viatorum (1), and C. muris (1), and two genotypes: Cryptosporidium rat genotype IV (16) and C. mortiferum-like (4). Additionally, two subtypes of C. parvum (IIdA15G1 and IIpA19) and one subtype of C. viatorum (XVdA3) were detected. These results demonstrate that various wild rodent species in Zhejiang were concurrently infected with rodent-adapted and zoonotic species/genotypes of Cryptosporidium, indicating that these rodents can play a role in maintaining and dispersing this parasite into the environment and other hosts, including humans.
    UNASSIGNED: Transmission interspécifique de Cryptosporidium chez les rongeurs sauvages de la région sud de la province chinoise du Zhejiang et son impact possible sur la santé publique.
    UNASSIGNED: Les rongeurs sauvages servent de réservoirs à Cryptosporidium et ont des grandes populations à l’échelle mondiale. Cependant, les données génétiques concernant Cryptosporidium chez ces animaux en Chine sont limitées. Ici, nous avons déterminé la prévalence et les caractéristiques génétiques de Cryptosporidium parmi 370 rongeurs sauvages capturés dans trois endroits distincts de la région sud de la province du Zhejiang, en Chine. Des excréments frais ont été collectés dans le rectum de chaque rongeur et l’ADN en a été extrait. L’espèce de rongeur a été identifiée par amplification par PCR du gène du cytochrome b des vertébrés. Cryptosporidium a été détecté par amplification PCR et séquençage d’amplicons de la petite sous-unité du gène de l’ARN ribosomal. Les échantillons positifs de C. viatorum et C. parvum ont ensuite été sous-typés en analysant le gène de la glycoprotéine de 60 kDa. Un résultat positif pour Cryptosporidium a été trouvé dans 7 % (26/370) des échantillons, impliquant cinq espèces de rongeurs : Apodemus agrarius (36), Niviventer niviventer (75), Rattus losea (18), R. norvegicus (155) et R. tanezumi (86). Leurs taux respectifs de positivité pour Cryptosporidium étaient de 8,3 %, 5,3 %, 11,1 %, 7,1 % et 7,0 %. L’analyse des séquences a confirmé la présence de trois espèces de Cryptosporidium : C. parvum (4), C. viatorum (1) et C. muris (1), et de deux génotypes : Cryptosporidium génotype IV de rat (16) et C. mortiferum-like (4). De plus, deux sous-types de C. parvum (IIdA15G1 et IIpA19) et un sous-type de C. viatorum (XVdA3) ont été détectés. Ces résultats démontrent que diverses espèces de rongeurs sauvages du Zhejiang sont simultanément infectées par des espèces/génotypes de Cryptosporidium zoonotiques et adaptés aux rongeurs, ce qui indique que ces rongeurs peuvent jouer un rôle dans le maintien et la dispersion de ce parasite dans l’environnement et d’autres hôtes, y compris les humains.
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  • 文章类型: Journal Article
    糖皮质激素诱导的青光眼(GIG)是与糖皮质激素(GC)相关的常见并发症,导致不可逆转的失明。GIG的特征是细胞外基质(ECM)在小梁网(TM)中的异常沉积,眼内压(IOP)升高,和视网膜神经节细胞(RGC)的损失。本研究的目的是研究烟酰胺核苷(NR)对GIG中TM的影响。
    利用对GC有反应的原代人TM细胞(pHTMs)和C57BL/6J小鼠建立体外和体内GIG模型,分别。该研究评估了TM中ECM相关蛋白的表达以及pHTMs的功能,以反映NR的作用。还在GIG细胞模型中检查了线粒体形态和功能。通过IOP监测GIG进展,RGC,和线粒体形态。酶促测定pHTM的细胞内烟酰胺腺嘌呤二核苷酸(NAD)水平。
    NR在地塞米松治疗后显著阻止ECM相关蛋白的表达并减轻pHTM的功能障碍。重要的是,NR保护受损的ATP合成,防止线粒体活性氧(ROS)的过度表达,并且还可以防止体外GCs诱导的线粒体膜电位降低。在GIG小鼠模型中,NR部分防止了IOP的升高和RGC的损失。此外,NR有效抑制ECM相关蛋白的过度表达,减轻体内线粒体损伤。
    根据结果,NR有效增强细胞内NAD+水平,从而通过减弱由GC诱导的线粒体损伤来减轻GIG中的异常ECM沉积和TM功能障碍。因此,NR作为GIG治疗的治疗候选物具有有希望的潜力。
    UNASSIGNED: Glucocorticoid-induced glaucoma (GIG) is a prevalent complication associated with glucocorticoids (GCs), resulting in irreversible blindness. GIG is characterized by the abnormal deposition of extracellular matrix (ECM) in the trabecular meshwork (TM), elevation of intraocular pressure (IOP), and loss of retinal ganglion cells (RGCs). The objective of this study is to investigate the effects of nicotinamide riboside (NR) on TM in GIG.
    UNASSIGNED: Primary human TM cells (pHTMs) and C57BL/6J mice responsive to GCs were utilized to establish in vitro and in vivo GIG models, respectively. The study assessed the expression of ECM-related proteins in TM and the functions of pHTMs to reflect the effects of NR. Mitochondrial morphology and function were also examined in the GIG cell model. GIG progression was monitored through IOP, RGCs, and mitochondrial morphology. Intracellular nicotinamide adenine dinucleotide (NAD+) levels of pHTMs were enzymatically assayed.
    UNASSIGNED: NR significantly prevented the expression of ECM-related proteins and alleviated dysfunction in pHTMs after dexamethasone treatment. Importantly, NR protected damaged ATP synthesis, preventing overexpression of mitochondrial reactive oxygen species (ROS), and also protect against decreased mitochondrial membrane potential induced by GCs in vitro. In the GIG mouse model, NR partially prevented the elevation of IOP and the loss of RGCs. Furthermore, NR effectively suppressed the excessive expression of ECM-associated proteins and mitigated mitochondrial damage in vivo.
    UNASSIGNED: Based on the results, NR effectively enhances intracellular levels of NAD+, thereby mitigating abnormal ECM deposition and TM dysfunction in GIG by attenuating mitochondrial damage induced by GCs. Thus, NR has promising potential as a therapeutic candidate for GIG treatment.
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  • 文章类型: Journal Article
    急性A型主动脉夹层(AAAD)是最危及生命的疾病之一,常伴有急性生理应激引起的短暂性高血糖。应激性高血糖对ST段抬高型心肌梗死预后的影响已有报道。然而,应激性高血糖与AAAD患者预后的关系尚不明确.
    回顾性分析456例急性A型主动脉夹层患者的临床资料。根据入院血糖将患者分为两组。进行Cox模型回归分析以评估应激诱导的高血糖与这些患者的30天和1年死亡率之间的关系。
    在456名患者中,149例(32.7%)出现AAAD合并应激性高血糖(SIH)。Cox模型的多因素回归分析结果表明,高血糖(RR=1.505,95%CI:1.046-2.165,p=0.028),涉及肾动脉的主动脉缩窄(RR=3.330,95%CI:2.237-4.957,p<0.001),主动脉缩窄累及肠系膜上动脉(RR=1.611,95%CI:1.056-2.455,p=0.027),主动脉缩窄(RR=2.034,95%CI:1.364-3.035,p=0.001)是AAAD患者术后1年死亡率的独立影响因素。
    目前的研究结果表明,在AAAD患者中,入院时测得的应激性高血糖与1年死亡率密切相关。此外,应激性高血糖可能与AAAD患者病情的严重程度有关。
    UNASSIGNED: Acute Type A Aortic Dissection (AAAD) is one of the most life-threatening diseases, often associated with transient hyperglycemia induced by acute physiological stress. The impact of stress-induced hyperglycemia on the prognosis of ST-segment elevation myocardial infarction has been reported. However, the relationship between stress-induced hyperglycemia and the prognosis of AAAD patients remains uncertain.
    UNASSIGNED: The clinical data of 456 patients with acute type A aortic dissection were retrospectively reviewed. Patients were divided into two groups based on their admission blood glucose. Cox model regression analysis was performed to assess the relationship between stress-induced hyperglycemia and the 30-day and 1-year mortality rates of these patients.
    UNASSIGNED: Among the 456 patients, 149 cases (32.7%) had AAAD combined with stress-induced hyperglycemia (SIH). The results of the multifactor regression analysis of the Cox model indicated that hyperglycemia (RR = 1.505, 95% CI: 1.046-2.165, p = 0.028), aortic coarctation involving renal arteries (RR = 3.330, 95% CI: 2.237-4.957, p < 0.001), aortic coarctation involving superior mesenteric arteries (RR = 1.611, 95% CI: 1.056-2.455, p = 0.027), and aortic coarctation involving iliac arteries (RR = 2.034, 95% CI: 1.364-3.035, p = 0.001) were independent influences on 1-year postoperative mortality in AAAD patients.
    UNASSIGNED: The current findings indicate that stress-induced hyperglycemia measured on admission is strongly associated with 1-year mortality in patients with AAAD. Furthermore, stress-induced hyperglycemia may be related to the severity of the condition in patients with AAAD.
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