Patient acceptable symptom state and minimal clinically important difference for patient-reported outcomes in systemic sclerosis: A secondary analysis of a randomized controlled trial comparing personalized physical therapy to usual care

Background

To estimate patient acceptable symptom state (PASS) and minimal clinically important difference (MCID) for patient-reported outcomes in systemic sclerosis (SSc).

肥胖与雌性幼龄SD大鼠青春发育提前的相关性

目的 探讨肥胖与雌性幼龄SD大鼠与青春发育提前之间的相关性。方法 将10只雌性SD大鼠与6只雄性SD大鼠随机分为两组,分别为亲代模型组(雌鼠n=5,雄鼠n=3)、亲代对照组(雌鼠n=5,雄鼠n=3)。模型组以高脂饲料饲喂8周造模,对照组用普通大鼠饲料饲喂,8周后筛选体质量大于对照组20%的模型组亲代大鼠体进行交配,繁殖的雌性仔鼠设定为模型组仔鼠,亲代对照组大鼠繁殖的雌性仔鼠作为对照组仔鼠。模型组仔鼠造模方法与模型组亲代大鼠相同,均为同配方高脂饲料饲喂,21日龄断乳后饲喂5周,对照组仔鼠则用普通饲料饲喂5周。自21日龄起每日观察仔鼠阴门开启情况,阴门开启后每日均进行阴道涂片检查,观察动情周期,并称量体重;体长及腹围的测量每两周进行1次;两组实验仔鼠均在56日龄时结束实验,腹主动脉取血,检测两组幼鼠56日龄血清胆固醇(CH)、甘油三酯(TG)、血清卵泡刺激素(FSH)、促黄体生成素(LH)、雌二醇(E2)。实验结束后解剖56日龄仔鼠,取材子宫、卵巢,计算卵巢指数、子宫指数,子宫、卵巢做病理切片HE染色,计数卵巢最大横截面黄体个数和成熟卵个泡数。结果 ①56日龄造模结束,模型组幼鼠体重、腹围均高于对照组幼鼠,P<0.001;②模型组幼鼠血清TG、CH均高于对照组,P<0.001;③模型组幼鼠血清LH、E2浓度高于对照组幼鼠,P<0.001,血清FSH浓度低于对照组,P<0.001;④模型组幼鼠卵巢病理切片中最大横截面黄体计数较对照组多,P<0.001;成熟卵泡计数少于对照组,P<0.001;⑤Pearson相关性分析结果为:幼龄SD大鼠体质量与第一次动情间期、阴门开启时间两项指标呈成负相关,与血清LH、卵巢最大横截面切片黄体计数两项指标成正相关;幼龄SD大鼠腹围与第一次动情间期出现时间、阴门开启时间两项指标成负相关,与血清LH、卵巢最大横截面切片黄体计数两项指标成正相关。结论 幼龄SD大鼠青春发育评判指标与肥胖指标具有相关性,呈正相关。即具有肥胖特征的幼龄SD大鼠青春发育较之正常对照组幼鼠提前。     

Correlations between stress,anxiety and depression and sociodemographic and clinical characteristics among outpatients with heart failure

AimTo describe and investigate correlations among anxiety, stress and depression and identify their relationship with sociodemographic and clinical characteristics of patients with heart failure.

大鼠体内大脏器创伤模型涂布康派特?医用胶后生物反应观测

目的：评价康派特?医用胶对大鼠内脏创面止血后的安全性及其体内降解情况。方法：大鼠随机分为空白对照组,手术对照组和手术涂胶组,给胶组分别给予8μL或40μL康派特?医用胶。术后动物进行临床症状观察,体重、摄食量测定,血常规、血清生化学、脏器重量和组织病理学检查。结果：各项指标均未见与康派特?医用胶相关毒性反应;6个月组织病理学检查可见胶体被纤维结缔组织逐渐分割,多核巨细胞和炎症细胞参与异物降解。结论本实验条件下,未见康派特?医用胶对大鼠机体有毒性作用,胶体在大鼠体内6个月开始降解。     

3,4-Bis(3′-hydroxyphenyl)hexane — A new mammary tumor-inhibiting compound

Summary The syntheses of the hexestrol derivatives 3,4-bis-(3-hydroxyphenyl)hexane (4a), 3,4-bis(4-fluoro-3-hydroxyphenyl)hexane (4b), 3,4-bis(3, 4dihydroxyphenyl)hexane (4c), and 3,4-bis(3,4-diacetoxyphenyl)hexane (4d) are described. All compounds showed a marked, competitive inhibition of the estradiol receptor interaction (K _a4c>K_a4a>K_a4d>K_a4b). Evaluated in the mouse uterine weight test compounds 4c and 4d almost reached the estrone effect, whereas 4a and 4b did not produce full uterotrophic response. Compounds 4a-d antagonized the estrone stimulated uterine growth of the immature mouse. Compound 4a (NSC-297170) exhibited a specific, dose-related growth inhibition of the estrogen responsive MCF-7 human breast tumor cell line. Tested on the 9,10-dimethyl-1,2-benzanthracene-induced hormonedependent mammary adenocarcinoma of the Sprague-Dawley rat all compounds showed marked inhibition of tumor growth. As in all experiments compounds 4a and 4b, which is resistant to hydroxylation in 4position exhibited an identical pattern of action, which is different from that shown by compound 4c, the effect of compound 4a cannot be explained by its possible catechol metabolite 4c.Supported by grants from the Deutsche Forschungsgemeinschaft and the Verband der Chemischen Industrie-Fonds der Chemischen Industrie     

Complement factor H gene (CFH) polymorphisms C-257T,G257A and haplotypes are associated with protection against severe dengue phenotype,possible related with high CFH expression

Four genetic polymorphisms located at the promoter (C-257T) and coding regions of CFH gene (exon 2 G257A, exon 14 A2089G and exon 19 G2881T) were investigated in 121 dengue patients (DENV-3) in order to assess the relationship between allele/haplotypes variants and clinical outcomes. A statistical value was found between the CFH-257T allele (TT/TC genotypes) and reduced susceptibility to severe dengue (SD). Statistical associations indicate that individuals bearing a T allele presented significantly higher protein levels in plasma. The −257T variant is located within a NF-κB binding site, suggesting that this variant might have effect on the ability of the CFH gene to respond to signals via the NF-κB pathway. The G257A allelic variant showed significant protection against severe dengue. When CFH haplotypes effect was considered, the ancestral CG/CG promoter-exon 2 SNP genotype showed significant risk to SD either in a general comparison (ancestral × all variant genotypes), as well as in individual genotypes comparison (ancestral × each variant genotype), where the most prevalent effect was observed in the CG/CG × CA/TG comparison. These findings support the involvement of −257T, 257A allele variants and haplotypes on severe dengue phenotype protection, related with high basal CFH expression.     

Proteolytic activity of Plasmodium falciparum subtilisin-like protease 3 on parasite profilin,a multifunctional protein

Subtilisin-like proteases of malaria parasite Plasmodium falciparum (PfSUB1, 2 and 3) are expressed at late asexual blood stages. PfSUB1 and 2 are considered important drug targets due to their essentiality for parasite blood stages and role in merozoite egress and invasion of erythrocytes. We have earlier shown the in vitro serine protease activity of PfSUB3 and its localization at asexual blood stages. In this study, we attempted to identify the biological substrate(s) of PfSUB3 and found parasite profilin (PfPRF) as a substrate of the protease. Eukaryotic profilins are multifunctional proteins with primary role in regulation of actin filament assembly. PfPRF possesses biochemical features of eukaryotic profilins and its rodent ortholog is essential in blood stages. Profilin from related apicomplexan parasite Toxoplasma gondii (TgPRF) is known to be involved in parasite motility, host cell invasion, active egress from host cell, immune evasion and virulence in mice. In this study, mature PfSUB3 proteolysed recombinant PfPRF in a dose-dependent manner in in vitro assays. Recombinant PfPRF was assessed for its proinflammatory activity and found to induce high level of TNF-α and low but significant level of IL-12 from mouse bone marrow-derived dendritic cells. Proteolysis of PfPRF by PfSUB3 is suggestive of the probable role of the protease in the processes of motility, virulence and immune evasion.     

亚高原地区大、小鼠生化指标正常参考值实验研究

目的 探讨亚高原地区SD大鼠和KM小鼠血液生化指标变化规律,确立参考值.方法 将2w龄SD大鼠和KM小鼠各60只,按饲养地区分为亚高原组(海拔1890 m)和平原组(海拔540 m),分别于4、6、10 w龄时检测血液生化指标,比较两组肝功能、肾功能、血脂及血糖的差异.结果 取得亚高原地区不同周龄、不同性别SD大鼠和KM小鼠的血液生化指标均值.亚高原组的肝功能指标普遍高于平原组,以谷丙转氨酶、谷草转氨酶、白蛋白的改变为主(P＜0.05);亚高原组肾功能指标也高于平原组(P＜0.05),特别是习服时间越长,改变越明显;亚高原组血脂指标高于平原组(P＜0.05);除平原组雄性KM小鼠血糖(GLU)高于亚高原组(P＜0.05)外,其余亚高原组大、小鼠GLU均高于平原组(P＜0.05).结论 建立了亚高原地区不同周龄、不同性别SD大鼠和KM小鼠的血液生化指标数据库,为该地区生物医学研究奠定了基础,也为亚高原地区KM小鼠和SD大鼠标准化鉴定和质量控制提供了可靠依据.