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??Objective To investigate the relationship between CCL2-2518A/G gene polymorphism and severity of enterovirus 71??EV71?? infection. Methods CCL2 gene polymorphism in 188 EV71-infected patients and 235 healthy controls were detected by the improved multiplex ligation detection reaction technique??iMLDR??. The level of CCL2 in two groups was determined by enzyme-linked immunosorbent assay??ELISA??. Results No significant differences were found in the distribution of genotype CCL2-2518A/G between EV71-infected patients and the healthy control group??P??0.05??. The G allele??genotypes AG or GG?? in the CCL2-2518A/G??P??0.001?? was more frequent in patients with severe EV71 infection. The level of CCL2 in infected patients was higher than that of the heathy controls ??P??0.05???? the severe cases had higher level of CCL2 than that of the slight cases and healthy controls??P??0.05??. The level of CCL2 in GG gene group was significantly higher than that in AG gene group and the level of CCL2 in AG gene group was significantly higher than that in AA gene group.The people with CCL2-2518G allele??GG+AG?? had higher level of CCL2 than those only with CCL2-2518A allele??AA????P??0.05??. Conclusion The G carrier of the CCL2-2518A/G is found to be associated with severity of EV71 infection??and could be susceptibility factors in the development of EV71 infection.     

首诊于眼科的IgG4相关疾病初步研究

目的 对一组首诊于眼科的IgG4相关疾病患者进行总结分析.方法 回顾性病例分析.选取2011年1月～2021年4月解放军总医院第一医学中心神经眼科住院治疗的9例IgG4相关眼病(IgG4-ROD)纳入分析.总结患者临床表现、实验室检查、眼眶磁共振成像(MRI)、病理学检查和治疗情况.结果 9例患者,男性6例、女性3例,...     

佛司可林类化合物对离体豚鼠气管条舒张作用的研究

目的研究佛司可林、异佛司可林、佛司可林G、J、A、I对磷酸组胺(His)、氯化乙酰胆碱(ACh)引起的离体豚鼠气管条收缩作用的影响。方法取豚鼠气管制成螺旋状气管条,用磷酸组胺、氯化乙酰胆碱诱发气管条收缩,按累积剂量法加入系列浓度的佛司可林、异佛司可林、佛司可林G、J、A、I,观察其对气管条收缩反应的舒张作用,记录各累积浓度下的量效曲线,计算解痉百分率。结果异佛司可林、佛司可林均能明显舒张由His、ACh引起的离体豚鼠气管条的收缩(P<0.01)。佛司可林G、J、A、I均能舒张由His引起的离体豚鼠气管条的收缩(P<0.01)。且随着剂量的增加,舒张作用也有所增强。结论佛司可林、异佛司可林、佛司可林G、J、A、I对His或ACh引起的离体豚鼠气管条的收缩均具有舒张作用。     

G蛋白抑制肽GCIP-27对小鼠心肌肥大的影响

目的:探讨G蛋白抑制肽GCIP-27对去甲肾上腺素诱导的小鼠心肌肥大的作用。方法:50只小鼠随机分为对照组、模型组和GCIP-27组,分别给予生理盐水、去甲肾上腺素和GCIP-27低、中、高剂量(10、30、100μg·kg-1)连续15d。之后称量小鼠体质量、心脏重、左心室重,计算心脏指数和左心室指数。采用免疫组化法测定心肌组织的原癌基因c-Fos和细胞外信号调节激酶p-ERK1/2表达。结果:与对照组比较,模型组可明显诱导小鼠产生心肌肥大。与模型组比较,GCIP-27各剂量组能明显降低心脏指数和左心室指数,减少心肌组织中c-Fos和p-ERK1/2的表达量(P<0.05或P<0.01)。结论:GCIP-27可抑制小鼠发生心肌肥大,其机制可能与抑制c-Fos和p-ERK1/2表达有关。     

乳状液膜法提取青霉素非稳态传质数学模型的研究

在“渐进前沿模型”的基础上 ,建立并推导了乳状液膜法提取青霉素的非稳态传质数学模型。实验条件下乳状液膜法提取青霉素的过程属扩散控制 ,其阻力主要来源于膜相。青霉素在膜相中的扩散是提取过程的速控步骤     

Two generation reproduction and teratogenicity studies of feeding cyadox in Wistar rats

To investigate the teratogenic potential and reproductive toxicity of cyadox, a growth promoting agent, Wistar rats (F₀) were fed with diets containing cyadox (0, 50, 150 and 2500 mg/kg) or olaquindox (150 mg/kg), approximately equivalent to cyadox 5, 15, 250 or olaquindox 15 mg/kg b.w./day across two generations. Half of the pregnant rats (F₀, F_1b) were subjected to caesarean section on gestational day 20 for teratogenic examination and the other half produced pups F_1a and F_2a, respectively. At the 250 mg/kg b.w./day cyadox group, body weights of F_1b pregnant rats and F_2a on day 21 after birth decreased; fetal body lengths and tail lengths decreased; the number of fetal resorptions increased significantly; litter weights, number of viable fetuses decreased; number of embryo resorptions increased significantly; number of liveborn F_1a, F_1b and F_2a decreased. No macroscopic or microscopic change of any significance was found in the reproductive organs. Significant increases in the incidence of cervial ribs or lumbar ribs in F_2a pups and significant increases of relative organ weight of testis and epididymis in F_1b were observed at the 250 mg/kg b.w./day cyadox group. The NOAEL for reproduction/development of cyadox for rats was estimated to be 150 mg/kg diet, which was equivalent to approximately 15 mg/kg b.w./day.     

Mas在肿瘤中的研究进展

肾素-血管紧张素系统是肿瘤微环境的重要组成部分,在肿瘤代谢,血管生成和侵袭中发挥重要作用。Mas是该系统ACE2-Ang-(l-7)-Mas轴的重要成分,是一种重要的致癌基因,在多种癌组织中均表达。主要针对Mas在肿瘤形成中所涉及的相关通路进行简要综述。     

Cyanidin-3-O-glucoside and Peonidin-3-O-glucoside-Rich Fraction of Black Rice Germ and Bran Suppresses Inflammatory Responses from SARS-CoV-2 Spike Glycoprotein S1-Induction In Vitro in A549 Lung Cells and THP-1 Macrophages via Inhibition of the NLRP3 Inflammasome Pathway

Black rice is a functional food that is high in anthocyanin content, primarily C3G and P3G. It possesses nutraceutical properties that exhibit a range of beneficial effects on human health. Currently, the spike glycoprotein S1 subunit of SARS-CoV-2 (SP) has been reported for its contribution to pathological inflammatory responses in targeting lung tissue and innate immune cells during COVID-19 infection and in the long-COVID phenomenon. Our objectives focused on the health benefits of the C3G and P3G-rich fraction of black rice germ and bran (BR extract) on the inhibition of inflammatory responses induced by SP, as well as the inhibition of NF-kB activation and the NLRP3 inflammasome pathway in an in vitro model. In this study, BR extract was identified for its active anthocyanins, C3G and P3G, using the HPLC technique. A549-lung cells and differentiated THP-1 macrophages were treated with BR extract, C3G, or P3G prior to exposure to 100 ng/mL of SP. Their anti-inflammatory properties were then determined. BR extract at concentrations of 12.5–100 μg/mL exhibited anti-inflammation activity for both A549 and THP-1 cells through the significant suppression of NLRP3, IL-1β, and IL-18 inflammatory gene expressions and IL-6, IL-1β, and IL-18 cytokine secretions in a dose-dependent manner (p < 0.05). It was determined that both cell lines, C3G and P3G (at 1.25–10 μg/mL), were compatibly responsible for the significant inhibition of SP-induced inflammatory responses for both gene and protein levels (p < 0.05). With regard to the anti-inflammation mechanism, BR extract, C3G, and P3G could attenuate SP-induced inflammation via counteraction with NF-kB activation and downregulation of the inflammasome-dependent inflammatory pathway proteins (NLRP3, ASC, and capase-1). Overall, the protective effects of anthocyanins obtained from black rice germ and bran can be employed in potentially preventive strategies that use pigmented rice against the long-term sequelae of COVID-19 infection.