血清趋化素、瘦素、脂联素浓度与学龄前单纯性肥胖儿童糖脂代谢的关系

目的 研究血清趋化素、瘦素、脂联素水平与3~6岁学龄前期儿童单纯性肥胖及代谢的关系,为学龄前单纯性肥胖儿童临床监测及治疗效果提供依据。方法 选取2019年1月—2020年5月于大连市妇幼保健院儿童保健门诊体检的3~6岁儿童为研究对象,获取单纯性肥胖儿童41例作为研究组,另获取同年龄、同时期儿童43例作为对照组。测量其身高和体重,并计算身高别体重;测定血清趋化素、瘦素、脂联素、空腹血糖(FPG)、空腹胰岛素(FINS)、甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-c)、低密度脂蛋白胆固醇(LDL-c),同时计算胰岛素抵抗指数。结果 单纯性肥胖组的FINS、胰岛素抵抗指数(HOMA-IR),LDL-c,血清趋化素,瘦素明显高于对照组,差异有统计学意义(t=3.288、2.927、4.939、3.078、5.456,P＜0.05),HDL-c,脂联素明显低于对照组,差异有统计学意义(t=-5.179、-3.145,P＜0.05)。而两组FPG、TG、TC差异无统计学意义(t=0.391、0.768、-0.266,P＞0.05); 趋化素与身高别体重、FINS、HOMA-IR、 LDL-c、瘦素呈正相关(r=0.339、0.416、0.227、0.376、0.266,P＜0.05),与HDL-c、脂联素呈负相关(r=-0.410、-0.309,P＜0.05)。瘦素与身高别体重、FINS、HOMA-IR、 LDL-c、趋化素呈正相关(r=0.492、0.375、0.279、0.269、0.266,P＜0.05),与HDL-c、脂联素呈负相关(r=-0.467、-0.326,P＜0.05)。脂联素与身高别体重、FINS、HOMA-IR,LDL-c、趋化素、瘦素呈负相关(r=-0.296、-0.351、-0.278、-0.229、-0.309、-0.326,P＜0.05),与HDL-c呈正相关(r=0.234,P=0.032)。结论 血清趋化素、瘦素、脂联素水平与学龄前单纯性肥胖儿童糖脂代谢密切相关,这些指标对于识别、监测、干预学龄前单纯性肥胖儿童有着重要意义。     

脂肪因子Chemerin对骨代谢影响的研究进展

现代社会肥胖人群逐年增多,肥胖相关代谢性骨病的患者也日益增多,严重危害人群健康。Chemerin作为一种脂肪因子,主要由脂肪细胞和肝细胞分泌,在循环中水平高于经典脂肪因子如Leptin和Adiponectin,对全身代谢和免疫发挥重要作用。近年研究发现,肥胖状态下伴随着外周脂肪组织的增多,骨髓内脂肪组织也急剧增加。骨髓内脂肪细胞分泌Chemerin,通过旁分泌或自分泌方式抑制成骨细胞分化和促进破骨细胞分化以及影响骨髓腔微环境。本文将系统回顾国内外有关Chemerin与骨代谢相关研究的文献,并探讨Chemerin对骨代谢的影响及其机制。     

Chemerin/chemR23对银屑病患者外周血Th9/Treg细胞平衡的影响

目的：探究chemerin对银屑病患者外周血辅助性T淋巴细胞9(helper T cells 9,Th9)/调节性T淋巴细胞 (regulatory T cells,Treg)免疫平衡的调节作用及其潜在的机制。方法：选取25例银屑病患者和20例健康志愿者,采用 磁珠分离法分离出受试者外周血中CD4+ T细胞,行实时RT-PCR和ELISA检测细胞中chemerin和其受体chemR23的表 达;用不同浓度的chemerin(50,100,150,200 ng/mL)分别处理从健康志愿者外周血分离得到的CD4+ T细胞,行MTT 比色法检测细胞活力以筛选最适浓度;采用ELISA检测炎性细胞因子水平;行流式细胞术检测Th9和Treg细胞数。 结果：与对照相比,银屑病患者外周血中chemerin和chemR23的表达均显著增加,Th 9/Treg比例明显上升(均P<0.05); 选取最适浓度150 ng/mL的chemerin处理CD4+ T细胞后,细胞中白细胞介素(IL)-6,IL-9和IL-17的水平均显著增加, Th9/Treg比例明显上升(均P<0.05),而chemR23沉默可反转chemerin对CD4+ T细胞的上述作用(均P<0.05)。结论： Chemerin通过chemR23调节银屑病患者外周血CD4+ T淋巴细胞中的Th 9/Treg细胞免疫平衡。     

Chemerin在婴幼儿呼吸道合胞病毒肺炎中的调节作用

目的探讨趋化蛋白chemerin在呼吸道合胞病毒(RSV)肺炎中的临床意义。方法入选RSV肺炎患儿82例,其中轻症65例,重症17例;对照组儿童40例。ELISA法检测并比较各组血清chemerin、肿瘤坏死因子(TNF-α)、细胞因子(IL-17)、IL-10及转化生长因子(TGF-β)水平。结果 RSV肺炎轻症组、重症组和对照组的血清chemerin水平分别为(539.98±65.86)pg/ml、(786.62±82.59)pg/ml和(337.24±43.37)pg/ml,差异有统计学意义(F=150.29,P=0.000);重症组血清chemerin水平分别高于轻症组和对照组,轻症组高于对照组,差异有统计学意义(P均0.05)。三组间TNF-α、IL-17、IL-10和TGF-β水平的差异均有统计学意义(F=46.80~284.36,P均0.05)。RSV肺炎患儿的血清chemerin水平与TNF-α、IL-17水平均呈显著正相关(r=0.81、0.61,P均0.05),而与IL-10、TGF-β则呈显著负相关(r=–0.80、–0.75,P均0.05)。结论 RSV肺炎患儿血清chemerin水平升高,与炎症程度相关,并与促炎细胞因子水平正相关;chemerin可能在RSV感染中发挥重要的调节作用。     

Chemerin is associated with inflammatory markers and metabolic syndrome phenotypes in hypertension patients

Background: Chemerin is a new adipokine elevated in states of obesity and metabolic syndrome. In order to identify the role of chemerin in hypertension, we conducted a case--control study to evaluate the role of chemerin in hypertension.

Methods: Two hundred and thirty-seven new-diagnosed essential hypertensive (EH) patients and one hundred and ten normotensive healthy subjects (NT) were enrolled. After an overnight fasting, participants underwent an oral glucose-tolerance test (OGTT). Anthropometric measurements and serum analyses were checked, including body mass index (BMI), waist circumference, insulin, triglycerides, total cholesterol, HDL-cholesterol, LDL-cholesterol, glucose, chemerin, hs-CRP, TNF-α and IL-6.

Results: Compared with healthy controls, subjects with hypertension had significantly higher chemerin serum levels (p?chemerin level was significantly associated with metabolic characteristics including BMI, systolic blood pressure, fasting glucose and insulin, OGTT 2-hour glucose, plasma triglycerides, plasma total cholesterol, HOMA-IR and markers of inflammation including hs-CRP, TNF-α and IL-6, independent of age and gender. Only gender, HOMA-IR, TNF-α and TG were independently related factors to plasma chemerin level after multiple regression analysis. In logistic regression analysis, high chemerin level was an independent predictor of the presence of hypertension (OR: 1.045, p?p?=?0.289).

Conclusions: Chemerin is strongly associated with markers of inflammation and components of the metabolic syndrome in hypertensive subjects and was independently associated with hypertension after adjustment for age, gender and metabolic risk factors.     

胆红素、血脂及Chemerin水平对冠心病患者病情进展的影响

目的：探讨胆红素、血脂及Chemerin水平对冠心病患者病情进展的影响。方法选择冠心病患者157例,分为单支病变组（A组）、双支病变组（B组）、多支病变组（C组）,分别为61、52、44例。分别检测血胆红素及血脂、Chemer-in水平。结果 B组IBIL、DBIL、TBIL及Chemerin较A组均有显著性差异（P〈0.05）;C组IBIL、TBIL及Chemerin较A、B组有显著性差异（P〈0.05）;DBIL较 A组均有显著性差异（P〈0.05）。B组TG、TC、HDL、LDL较 A组均有显著性差异（P〈0.05）;C组TC、LDL较 A、B 组有显著性差异（P〈0.05）;TG、HDL 较 A 组均有显著性差异（P〈0.05）。IBIL与TC、LDL、Chemerin呈显著负相关（P〈0.05）,DBIL 与 Chemerin 呈显著负相关（P〈0.05）,TBIL 与TC、LDL、Chemerin呈显著负相关（P〈0.05）。结论胆红素代谢异常与血脂代谢及脂肪因子紊乱密切相关,是导致冠状动脉粥样硬化的重要因素。     

Chemerin aggravates DSS-induced colitis by suppressing M2 macrophage polarization

Chemerin is present in various inflammatory sites and is closely involved in tissue inflammation. Recent studies have demonstrated that chemerin treatment can cause either anti-inflammatory or pro-inflammatory effects according to the disease model being investigated. Elevated circulating chemerin was recently found in patients with inflammatory bowel disease （IBD）; however, the role of chemerin in intestinal inflammation remains unknown. In this study, we demonstrated that the administration of exogenous chemerin （aa 17-156） aggravated the severity of dextran sulfate sodium （DSS）-induced colitis, which was characterized by higher clinical scores, extensive mucosal damage and significantly increased local and systemic production of pro-inflammatory cytokines, including IL-6, TNF-a and interferon （IFN-7）. Interestingly, chemerin did not appear to influence the magnitudes of inflammatory infiltrates in the colons, but did result in significantly decreased colonic expression of M2 macrophage-associated genes, including Arginase 1 （Arg-1）, Yml, FIZZ1 and IL-IO, following DSS exposure, suggesting an impaired M2 macrophage skewing in vivo. Furthermore, an in vitro experiment showed that the addition of chemerin directly suppressed M2 macrophage-associated gene expression and STAT6 phosphorylation in IL-4-stimulated macrophages. Significantly elevated chemerin levels were found in colons from DSS-exposed mice and from ulcerative colitis （UC） patients and appeared to positively correlate with disease severity. Moreover, the in vivo administration of neutralizing anti-chemerin antibody significantly improved intestinal inflammation following DSS exposure. Taken together, our findings reveal a pro-inflammatory role for chemerin in DSS-induced colitis and the ability of chemerin to suppress the anti-inflammatory M2 macrophage response. Our study also suggests that upregulated chemerin in inflamed colons may contribute to the pathogenesis of IBD.     

急性脑梗死患者血清chemerin检测的临床意义

目的探讨急性脑梗死（ACI）患者血清chemerin检测的临床意义。方法用酶联免疫吸附试验法检测78例ACI患者（ACI组）和70例健康体检者（对照组）血清chemerin水平。同时测量其体质量指数、空腹血糖、血脂和C反应蛋白（CRP）等生化指标,并对脑梗死患者进行美国国立卫生院神经功能缺损评分（NIHSS）。结果与对照组比较,ACI组血清chemerin水平升高,其升高水平与体质量指数、CRP、空腹血糖、三酰甘油、低密度脂蛋白胆固醇和NIHSS呈显著正相关。结论 ACI患者血清chemerin水平升高,chemerin可能通过影响胰岛素抵抗、血脂代谢,参与炎症反应和动脉粥样硬化等机制在脑梗死的发生中起重要作用。     

脂肪因子chemerin的研究进展

Chemerin是2007年新发现的脂肪因子,chemerin及其受体CMKLR1在组织中广泛分布,在白色脂肪组织中高表达,以自分泌/旁分泌的方式发挥生物学作用.动物实验和临床研究结果显示在炎症和代谢综合征相关疾病中,局部和(或)循环chemerin的表达水平明显升高.Chemerin在炎症反应、调节脂肪细胞分化和代谢等方面发挥着重要作用,其表达水平与糖代谢异常、肥胖、高血压及心血管疾病的发生密切相关.本文对chemerin在细胞和动物模型中的生物学功能进行讨论分析,以进一步了解chemerin与人类健康和疾病的相关性.     

中药熏蒸联合手法推拿、股四头肌锻炼对膝骨性关节炎患者关节液内脂肪因子visfatin及chemerin含量的影响

【目的】研究中药熏蒸、手法推拿、股四头肌锻炼综合治疗对膝骨性关节炎患者关节液中脂肪因子visfatin及chemerin含量的影响,探讨中药熏蒸联合手法推拿、股四头肌锻炼治疗膝骨性关节炎的可能机理。【方法】选取膝骨性关节炎患者60例,按照完全随机方法分为治疗组和对照组各30例,治疗组给予中药熏蒸+中医手法推拿+股四头肌锻炼治疗,对照组单纯给予中药熏蒸治疗。治疗2个疗程(2周)后,观察2组临床疗效及治疗前后膝关节西安大略和麦克马斯特大学骨关节炎调查量表(WOMAC)评分,并检测关节液中脂肪因子visfatin和chemerin含量。【结果】(1)经2个疗程治疗后,治疗组总有效率为96.7%,对照组为83.3%,治疗组疗效优于对照组(P0.01)。(2)治疗后,2组WOMAC评分均明显下降(P0.01),且治疗组的下降作用更为明显(P0.01)。(3)治疗后,2组关节液visfatin和chemerin含量均较治疗前明显下降(P0.01),且治疗组的下降作用优于对照组,差异均有统计学意义(P0.05)。【结论】中药熏蒸联合手法推拿、股四头肌锻炼治疗膝骨性关节炎临床疗效明显,并能明显减少关节液内visfatin和chemerin含量,这可能是中药熏蒸联合手法推拿、股四头肌锻炼治疗膝骨性关节炎的机理之一。