A clinical study on plasma biomarkers for deciding the use of adjuvant corticosteroid therapy in bronchopulmonary dysplasia of premature infants

Objective: The study was designed to investigate some plasma markers which help us to decide the use of adjuvant corticosteroid therapy in bronchopulmonary dysplasia (BPD) of premature infants.Methods: Thirty BPD infants were treated by dexamethasone. Among these cases, dexamethasone was significant effective in 10 cases, and no significant effective in 20 cases. These patients were divided into two groups as the significant effect (SE) group (n=10) and the non-significant effect (NE) group (n=20) according to the curative effect of dexamethasone. Fifteen non-BPD infants with gestational age and gender matching were selected as the control group. Plasma samples before and after dexamethasone treatment were collected from three infants chosen randomly from SEG for the data-independent acquisition (DIA) analysis. ELISA was further used to detect the levels of differential proteins LRP1 and S100A8 in all individuals, including SE, NE and control groups.Results: DIA analysis results showed that after dexamethasone treatment, there were a total of 52 plasma proteins that showed significant differences, of which 43 proteins were down-regulated and 9 proteins were up-regulated. LRP1 and S100A8 were two plasma proteins that were significantly changed after dexamethasone treatment. Compared with the control group, plasma LRP1 was significantly increased in BPD. Interestingly, the plasma concentration of LRP1 in the NE group was significantly higher than that in the SE group. S100A8, as an indicator of plasma inflammation, was significantly higher in BPD than the control group. Unlike LRP1, there was no significantly difference between the SE and NE group (P=0.279) before dexamethasone treatment.Conclusion: Elevated plasma LRP1 and S100A8 in BPD infants are two indicators that correlated with the efficacy of dexamethasone, and might be used as biomarkers for deciding the use of adjuvant corticosteroids therapy in the BPD.     

SLE患者血清AnuA、Hcy、TGF-β1和红细胞CR1测定的临床评价

目的:探讨系统性红斑狼疮(systemic lupus erythematosus,SLE)患者相关血清和细胞免疫指标水平的变化及意义。方法:60例SLE分为两组:活动性和非活动性SLE各占30例,并以62例健康者作为正常对照组。本文分别采用放射免疫分析、酶联免疫法、化学免疫发光法和郭峰法检测SLE患者及正常对照组血清转化生长因子β1(transforming growth factor-β1,TGF-β1),抗核小体抗体(antinucleosome antibody,AnuA)、同型半胱氨酸(homocysteine,Hcy)和红细胞补体Ⅰ型受体(red cell complement receptor typeⅠ,RCR1)水平,并分析其水平的变化与临床病情活动程度的关系。结果:本文结果表明,SLE缓解期组AnuA[相对单位/ml(RU/ml)]水平与正常对照组比较无显著差异(P>0.05);活动期组水平则显著高于正常对照组(P<0.01),且活动期组水平显著高于缓解期组(P<0.05)。TGF-β1水平缓解期组和活动期组均显著低于正常对照组(P<0.05),且患者两组间活动期组略低,但无显著性差异(P>0.05)。Hcy水平缓解期组和活动期组均显著高于正常对照组(P<0.05,P<0.01),且活动期组水平显著高于缓解期组(P<0.05)。RCR1水平缓解期组和活动期组均显著低于正常对照组(P均<0.01),且活动期组水平显著高于缓解期组(P<0.05),患者两组间活动期组略低,然水平无显著差异(P>0.05)。结论:SLE患者血清AnuA、Hcy TGF-β1和RCR1水平的变化,与SLE的发生及病情进展关系密切。     

脑损伤早产儿远期神经发育的影响因素分析

影响脑损伤早产儿远期神经发育的因素包括产前因素和产后因素。产前因素包括严重宫内窘迫、宫内感染、宫内生长受限等。产后因素包括住院期间相关治疗及护理、喂养方式、感染、体内铁平衡、睡眠状况、社会因素、基因因素等。因此,应尽量规避不良因素,做到早期干预、长期随访、父母参与,以期改善脑损伤早产儿预后。此外还应制订针对性的干预措施,以减少长期损害。     

眼周年轻化治疗方案的选择

目的：为提高手术效果,综合分析患者的具体情况和要求,采取合适的术式矫正眼周老化征象。方法：根据患者眼周皮肤衰老情况选择肉毒素注射、眼袋整形术、重睑术、提眉术等个性化的手术方案。结果：本组85例患者,选择不同的个性化治疗方案,效果满意。结论：针对眼周制定个性化治疗方案,针对性强,效果可靠,患者满意度高,值得临床推广应用。     

Pre-existing CD19-independent GL7− Breg cells are expanded during inflammation and in mice with lupus-like disease

Interleukin 10 (IL-10)-producing regulatory B-cells (Bregs) suppress inflammatory responses that mediate autoimmune diseases. However, it is unknown whether Bregs derive from a pre-existing dedicated B-cell lineage or if any B-cell can differentiate into Bregs in response to BCR or TLR activation. GL7⁺ B-cells are antigen-experienced differentiated B-cells while GL7^−/lo are at an early stage of B-cell differentiation. While both GL7^−/lo and GL7⁺ B cells can produce IL-10, differentiation of GL7⁻ B-cells into Bregs does not require CD19- or Bcl6-induced signals, suggesting that BCR-induced proliferation or Ig class-switching is not necessary for generation of Breg cells. Of particular importance, we show that GL7⁻ Breg cells are dramatically expanded in lupus-like mice and GL7⁻ Bregs suppressed inflammatory responses in lupus-like mice by inducing expansion of Foxp3⁺Treg cells. Taken together, these results suggest that pre-existing GL7⁻IL-10⁺ cells are expanded during inflammation, differentiate into GL7⁺ Bregs and contribute to immune-regulation in lupus-like mice.     

腹腔镜与开腹手术治疗门脉高压症的对比研究

目的探讨腹腔镜与开腹手术行脾切除联合贲门周围血管离断术治疗门脉高压症的手术效果。 方法回顾性分析2013年3月至2018年12月因门脉高压、脾大、脾功能亢进及食管胃底静脉曲张行脾切除术联合贲门周围血管离断术的患者资料,其中腹腔镜下手术21例(腹腔镜组),开腹手术50例(开腹组)。应用GraphPad Prism 6.0软件对所有数据进行分析。术中、术后相关指标采用( ±s)表示,独立样本t检验;并发症发生率采用χ²检验。P<0.05为差异有统计学意义。 结果与开腹组比较,腹腔镜组手术时间较长(P<0. 05),而术中出血量、切口长度、术后排气时间、镇痛药物使用次数、引流管拔除时间、术后住院时间、术后切口感染率均少于开腹组(P<0. 05);两组间的腹腔出血、腹、盆腔积液、肺部感染、胰瘘以及门静脉血栓形成差异无统计学意义(P>0.05)。 结论腹腔镜手术治疗门脉高压症行脾切除联合贲门周围血管离断术具有手术创伤小、术中出血少、术后恢复快、术后切口感染率低、住院时间短等优点,腹腔镜手术治疗门脉高压症是安全、可行的。     

A combination of Sinomenine and Methotrexate reduces joint damage of collagen induced arthritis in rats by modulating osteoclast-related cytokines

ObjectiveTo analyze the combination therapy of Sinomenine (SIN) and Methotrexate (MTX) in rheumatoid arthritis (RA), we herein demonstrated the combination effect of SIN and MTX on collagen-induced arthritis (CIA) in rats through their modulation on osteoclast-related cytokines.MethodsCIA was induced by the immunization of type II collagen (CII) in SD rats. SIN and MTX were administrated alone or in combination after the onset of arthritis. Arthritis index and histological analysis were used to evaluate the effect of treatments. Effects of SIN and MTX on expression of receptor activator of NF-κB ligand (RANKL) and osteopontin (OPN) in synovial tissues were assayed by immunohistochemistry. RANKL, osteoprotegerin (OPG), IL-6, IL-17 and matrix metalloproteinases (MMPs) in rat serum were measured by ELISA. The expression of osteoclast-related cytokines in fibroblast-like synoviocytes (FLS) from RA patients was assayed by RT-PCR.ResultsSIN and MTX combination additively reduced the inflammatory symptoms and joint damage in CIA. Combination of SIN and MTX significantly repressed synovial RANKL and OPN production. SIN and MTX exhibited complementary and synergistic effect upon down-regulating RANKL, IL-6, IL-17 and MMPs in rat serum. SIN and MTX also modulated the expression of RANKL and OPG in RA-FLS.ConclusionSIN and MTX have additive effects, decreasing inflammation and joint damage in CIA rats by modulating osteoclast-related cytokines. These results are indicative of the combined effect of SIN and MTX for anti-arthritic treatment in RA.