Purine alkaloids from the South China Sea gorgonian Subergorgia suberosa

Four new purine alkaloids, namely, 6-(1'-purine-6',8'-dionyl)suberosanone ( 1), 3,9-(2-imino-1-methyl-4-imidazolidinone-5-yl)isopropenylpurine-6,8-dione ( 2), 1-(3'-carbonylbutyl)purine-6,8-dione ( 3), and 9-(3'-carbonylbutyl)purine-6,8-dione ( 4), together with three known compounds, guanosine ( 5), thymidine ( 6), and adenosine ( 7), were isolated from the EtOH/CH 2Cl 2 extracts of the South China Sea gorgonian Subergorgia suberosa. The structures of 1- 4 were determined on the basis of extensive spectroscopic analysis, including 1D and 2D NMR data. Compounds 1- 4 all showed weak cytotoxicity toward human cancer cell lines MDA-MB-231 and A435.     

Thrombophilic mutations in pre-eclampsia and pregnancy-induced hypertension

AIM: The aim of the present study was to determine the existence or prevalence of thrombophilic markers such as Factor V Leiden, prothrombin G20210A, protein S, protein C, activated protein C and anti-thrombin in pre-eclampsia and pregnancy-induced hypertensive patients. METHODS: Blood samples were collected from a total number of 124 women at the maternity unit, University of Malaya Medical Center. These included 49 patients with pre-eclampsia, 63 patients with pregnancy-induced hypertension and 12 normal pregnant women. DNA was extracted from the blood samples. Factor V Leiden (Taq I) and prothrombin G20210A (Hind III) genotyping was done on polymerase chain reaction-restriction fragment length polymorphism. Anti-thrombin activity and the concentrations of protein C, protein S and activated protein C were measured using the IL Coagulation System (Hemosil). RESULTS: Of the 124 subjects, one pre-eclampsia patient was homozygous for Factor V Leiden mutation but prothrombin G20210A mutation was not present in any of the subjects. The subject with Factor V Leiden mutation also had a low activated protein C resistance and a low protein S concentration. CONCLUSIONS: Factor V Leiden mutation is present in the Asian population and may very well serve as one of the genetic factors responsible for pre-eclampsia and other adverse pregnancy outcomes.     

经直肠三维超声对良性前列腺增生分度的诊断价值

目的探讨经直肠三维超声对良性前列腺增生分度的诊断价值。方法对104例前列腺增生患者应用经直肠三维超声进行常规扫查前列腺,测量前列腺全腺和内腺的上下径、左右径、前后径及前列腺内腺动脉阻力指数;采用三维体积自动测量技术测量前列腺全腺、内腺体积和重量,计算内外腺宽度之比、内外腺厚度之比及移行带指数。结果依据前列腺全腺重量将前列腺增生分为Ⅰ、Ⅱ、Ⅲ和Ⅳ四组,前列腺内腺重量、移行带指数、内外腺宽度之比、内外腺厚度之比以及前列腺内腺动脉阻力指数在四组间均为Ⅳ>Ⅲ>Ⅱ>Ⅰ(P<0.01),且与前列腺重量呈正相关(P<0.01),是前列腺增生分度较好的指标。结论前列腺体积及形态改变是超声诊断前列腺增生的重要依据,经直肠三维超声可以准确测量前列腺全腺及内腺体积,为前列腺增生分度提供最直观的形态学指标,移行带指数、内外腺宽度之比等前列腺参数有助于前列腺增生的分度。     

实时定量PCR分析B-ALL病人TCRζ链表达特点

分析T细胞信号传导分子TCRζ链基因在B细胞-急性淋巴细胞白血病(B-ALL)病人外周血中的表达水平.方法:采用SYBR Green Ⅰ荧光定量PCR和相对定量检测15例初发B-ALL、5例完全缓解期(CR)患者和30例正常人外周血的单个核细胞的TCRζ链表达情况,以β2微球蛋白基因(β2M)作为内参,根据相对定量公式(2-△△Ct)分别计算B-ALL初发患者、CR期患者与正常人TCRζ链表达差异倍数等.结果:根据相对定量公式分析显示:与正常人相比,B-ALL初发患者外周血TCRζ链表达存在3种情况,即不表达(20%)、表达下降(53%)和表达上升(27%).TCRζ链表达水平在所有初发B-ALL病人均低于CR期病人.结论:本研究首先报道B-ALL病人中TCRRζ链表达水平的变化特点,TCRζ链基因表达水平以降低为主,可能与T细胞免疫缺陷有一定关系.     

四肢创伤围术期的脂肪栓塞综合征

目的:论述四肢创伤围术期脂肪栓塞综合征的病因、病理、临床表现及防治。方法:查阅关于四肢创伤围术期脂肪栓塞综合征方面的文献,进行总结。结果:脂肪栓塞综合征在四肢多发骨折中应引起临床医师认识和重视。结论:脂肪栓塞综合征防治的关键是防止应激反应发生、低血容量、组织缺氧、骨折早期固定、髓内钉手术进行减压处理及皮质类固醇的应用。     

Association of Vitamin D in Different Trimester with Hemoglobin during Pregnancy

The association between vitamin D and hemoglobin has been suggested. Vitamin D can affect erythropoiesis by the induction of erythroid progenitor cell proliferation and enhance iron absorption by regulating the iron-hepcidin-ferroportin axis in monocytes. However, this relationship in pregnant women is scarce. The purpose of this study was to investigate the association between plasma vitamin D levels with hemoglobin concentration in pregnant women considering each trimester and iron supplementation. The data were obtained from Zhoushan Pregnant Women Cohort, collected from 2011 to 2018. Plasma 25(OH)D was measured in each trimester using liquid chromatography–tandem mass spectrometry. Generalized estimating equations and multiple linear regressions were performed. Finally, 2962 pregnant women and 4419 observations in the first trimester were included in this study. Plasma 25(OH)D in first trimester (T1) (β = 0.06, p = 0.0177), second trimester (T2) (β = 0.15, p < 0.0001), and third trimester (T3) (β = 0.12, p = 0.0006) were positively associated with Hb. Association between plasma 25(OH)D levels in T1 and Hb concentration was positively associated with gestational age (β = 0.005, p = 0.0421). Pregnant women with VD deficiency in T1 (OR = 1.42, 95% CI: 1.07–1.88) or T2 (OR = 1.94, 95% CI: 1.30–2.89) presented an increased risk of anemia, compared with women without VD deficiency. Moreover, the significant relationship between VD and Hb was only observed among women with iron supplementation during pregnancy. Plasma 25(OH)D levels in each trimester were positively associated with Hb concentration. Iron supplementation might be an important factor affecting the relationship between VD and Hb.     

迷走神经心脏效应的离子通道基础

近年来自主神经与心律失常、血管迷走性晕厥(vasovagal syncope, VS)、心脏性猝死(sudden cardiac death, SCD)和离子通道病(ion channelopathy, ICP or ion channel disease ICD)等心血管疾病的关系越来越受到人们的重视.本文从离子通道和心脏M受体的角度对迷走神经的心脏效应予以回顾,这对于揭示迷走神经心脏效应的深层机制及深化对上述疾病的认识是有必要的.     

Comparative study on the gastrointestinal- and immune- regulation functions of Hedysari Radix Paeparata Cum Melle and Astragali Radix Praeparata cum Melle in rats with spleen-qi deficiency,based on fuzzy matter-element analysis

ContextHedysari Radix Praeparata Cum Melle (HRPCM) and Astragali Radix Praeparata Cum Melle (ARPCM) are used interchangeably in clinics to treat spleen-qi deficiency (SQD) symptom mainly including gastrointestinal dysfunction and decreased immunity, which has unknown differences in efficacy.ObjectiveTo investigate the differences between HRPCM and ARPCM on intervening gastrointestinal- and immune-function with SQD syndrome.Materials and methodsAfter the SQD model was established, the Sprague–Dawley (SD) rats were randomly divided into nine groups (n = 10): normal; model; Bu-Zhong-Yi-Qi Pills; 18.9, 12.6 and 6.3 g/kg dose groups of HRPCM and ARPCM. Gastrointestinal function including d-xylose, gastrin, amylase vasoactive intestinal peptide, motilin, pepsin, H⁺/K⁺-ATPase, Na⁺/K⁺-ATPase, sodium-glucose cotransporter 1 (SGLT1), glucose transporter 2 (GLUT2) and immune function including spleen and thymus index, blood routine, interleukin (IL)-2, IL-6, interferon-γ (IFN-γ), tumour necrosis factor-α (TNF-α), immunoglobulin (Ig) M, IgA, IgG and delayed-type hypersensitivity (DTH) were detected. Finally, the efficacy differences were analysed comprehensively by the fuzzy matter-element method.ResultsIn regulating immune, the doses differences in efficacy between HRPCM and ARPCM showed in the high-dose (18.9 g/kg), but there were no differences in the middle- and low- dose (12.6 and 6.3 g/kg); the efficacy differences were primarily reflected in levels of IL-6, IFN-γ, TNF-α and IgM in serum, and the mRNA expression of IL-6 and IFN-γ in the spleen. In regulating gastrointestinal, the efficacy differences were primarily reflected in the levels of D-xylose, MTL, and GAS in serum, and the mRNA and protein expression of SGLT1 and GLUT2 in jejunum and ileum.Discussion and conclusionsHRPCM is more effective than ARPCM on regulating gastrointestinal function and immune function with SQD syndrome. Therefore, we propose that HRPCM should be mainly used to treat SQD syndrome in the future.     

Meditation-based intervention for obsessive-compulsive disorder: A PRISMA-compliant systematic review and meta-analysis

Background:The purpose of this study was to investigate the effects of the meditation-based intervention on obsessive-compulsive disorder (OCD).Methods:The following databases were searched up to April 2021: the Cochrane Central Register of Controlled Trials (CENTRAL), EMBASE, Medline (via PubMed), PsycARTICLES, 4 Korean databases (Korean Medical Database [KMbase], Koreanstudies Information Service System [KISS], National Digital Science Library [NDSL], and Oriental Medicine Advanced Searching Integrated System [OASIS]), and China National Knowledge Infrastructure (CNKI). The search terms related to meditation-based intervention and OCD were used. This systematic review was based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. The selected articles were evaluated using the Cochrane risk of bias tool. The Review Manager (RevMan) 5.4 was used to perform the meta-analysis.Results:In all, 16 randomized controlled trials were selected. The meta-analysis showed that the group receiving the treatment combining medication and meditation-based intervention for OCD showed a more significant post-treatment improvement in Yale-Brown obsessive compulsive scale than the group receiving medication only. Compared with other non-medication interventions that are known to be effective in treating OCD, the Yale-Brown obsessive compulsive scale showed a significant improvement immediately after the meditation-based intervention. However, no significant difference was found in the follow-up monitoring data across all examined cases.Conclusion:This study was conducted to verify the effects of meditation-based intervention on OCD. The results suggested that combined treatment with medication and meditation-based intervention was more effective in treating OCD than medication alone; the positive effects of meditation-based intervention may be greater than the effects of other non-medication interventions. However, the lack of significant difference in the follow-up indicates that long-term effect of meditation-based interventions is unclear.Trial registration number:PROSPERO CRD42021244408     

注射用前列地尔水分测定方法的建立

目的建立测定注射用前列地尔中水分的方法。方法以无水甲醇作为样品溶剂,用费休氏法测定前列地尔中的水分。结果方法平均回收率为100.62%,RSD为0.51%（n=9）。结论费休氏法简便、快捷、准确,可作为注射用前列地尔中水分的测定方法。