FBS

FBS
  • 文章类型: Journal Article
    这项随机临床试验旨在评估水飞蓟素补充剂对2型糖尿病(T2DM)患者血糖指数和血脂谱的影响。在这项开放标签的随机临床试验研究中,48名T2DM患者有资格参加12周,随机分为两组:24名受试者在干预(每天接受3个140mg水飞蓟素胶囊和饮食计划)和24名对照组(接受饮食计划)。收集空腹血样和人体测量数据,在基线和研究结束时测定血糖指数和血脂谱.在纳入临床试验的60名患者中,48人完成了这项研究。在比较研究前后的水飞蓟素和对照组,体重和体重指数显著降低.然而,调整后,两组间无显著性差异。此外,每日食用三粒140毫克水飞蓟素12周没有显示对空腹血糖水平的任何显着差异(p=0.789),HbA1c(p=0.719),和脂质分布。本研究的结果表明,水飞蓟素不会导致T2DM患者血糖指数和血脂水平的变化。
    This randomized clinical trial was conducted to evaluate the effects of silymarin supplementation on glycemic indices and serum lipid profile in type 2 diabetes mellitus (T2DM) patients. In this open-label randomized clinical trial study, 48 patients with T2DM were eligible to participate for 12 weeks and were divided into two groups randomly: 24 subjects in the intervention (received three 140 mg silymarin capsules daily and diet plan) and 24 in control (received a diet plan). Fasting blood samples and anthropometric data were collected, and glycemic indices and lipid profiles were determined at baseline and at the end of the study. Out of 60 patients included in the clinical trial, 48 people completed the study. In comparing silymarin and control groups before and after the study, a significant reduction was observed in weight and body mass index. However, after adjustment, no significant difference was seen between the two groups. Furthermore, daily consumption of three capsules of 140 mg silymarin for 12 weeks did not show any significant difference on the level of fasting blood sugar (p = 0.789), HbA1c (p = 0.719), and lipid profile. The findings of the present study show that silymarin did not lead to changes in the level of glycemic index and lipid profile in patients with T2DM.
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  • 文章类型: Journal Article
    背景:多囊卵巢综合征(PCOS)是最常见的卵巢功能障碍。最近的研究表明,甘草对代谢谱的有效性,但发现不一致。所以,我们调查了甘草对肥胖指数的影响,血糖指数,PCOS女性的血脂状况。
    方法:这是随机的,双盲,我们对66名超重/肥胖的PCOS女性进行了安慰剂对照试验.参与者被随机分配接受1.5克/天的甘草提取物加低热量饮食(n=33)或安慰剂加低热量饮食(n=33),为期8周。使用标准协议评估参与者的人体测量指数和身体成分。空腹血糖(FBS),胰岛素水平,低密度脂蛋白胆固醇(LDL-C),总胆固醇(TC),甘油三酯(TG),使用酶试剂盒测量高密度脂蛋白胆固醇(HDL-C)。使用有效公式计算稳态模型评估-胰岛素抵抗(HOMA-IR)和β细胞功能的HOMA(HOMA-B)。
    结果:组间比较表明,两组之间在肥胖指数方面存在显着差异(体重,BMI,和身体脂肪),血脂谱(TG,TC,LDL-C,和HDL-C),FBS和胰岛素水平,HOMA-IR,研究结束时HOMA-B(P<0.05)。在调整混杂因素后,补充甘草加低热量饮食也比单独低热量饮食更有效地改善所有参数(基线值,年龄,体重变化,和身体活动变化)(P<0.05)。
    结论:研究结果表明,食用甘草可以改善肥胖指数,葡萄糖稳态,和与安慰剂相比的脂质分布。由于本研究可能存在的局限性,需要进一步的研究来证实这些发现.
    BACKGROUND: Polycystic ovary syndrome (PCOS) is the most common ovarian dysfunction. Recent studies showed the effectiveness of licorice on metabolic profiles with inconsistent findings. So, we investigated the effect of licorice on obesity indices, glycemic indices, and lipid profiles in women with PCOS.
    METHODS: This randomized, double-blind, placebo-controlled trial was performed on 66 overweight/obese women with PCOS. The participants were randomly assigned to receive either 1.5 gr/day licorice extract plus a low-calorie diet (n = 33) or placebo plus a low-calorie diet (n = 33) for 8 weeks. Participants\' anthropometric indices and body composition were assessed using standard protocols. Fasting blood sugar (FBS), insulin levels, low-density lipoprotein-cholesterol (LDL-C), total cholesterol (TC), triglyceride (TG), and high-density lipoprotein-cholesterol (HDL-C) were measured using enzymatic kits. The homeostasis model assessment-insulin resistance (HOMA-IR) and HOMA of β-cell function (HOMA-B) were calculated using valid formulas.
    RESULTS: Between-group comparisons demonstrated significant differences between the groups in terms of obesity indices (body weight, BMI, and body fat), lipid profiles (TG, TC, LDL-C, and HDL-C), FBS and insulin levels, HOMA-IR, and HOMA-B at the end of the study (P < 0.05). Supplementation with licorice plus a low-calorie diet was also more effective in improving all parameters than a low-calorie diet alone after adjusting for confounders (baseline values, age, weight changes, and physical activity changes) (P < 0.05).
    CONCLUSIONS: The findings showed that licorice consumption leads to improvements in obesity indices, glucose homeostasis, and lipid profiles compared to placebo. Due to possible limitations of the study, further research is needed to confirm these findings.
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  • 文章类型: Journal Article
    中国仓鼠卵巢(CHO)细胞是上皮样细胞,其产生具有类似于人糖基化的翻译后修饰的蛋白质。它广泛用于生产重组治疗性蛋白质和单克隆抗体。培养CHO细胞通常需要添加一定比例的胎牛血清(FBS)以维持细胞增殖和传代。然而,血清的特点是其复杂的成分,批次间的可变性,高成本,和潜在的风险的外源性污染物,如支原体和病毒,影响合成蛋白质的纯度和安全性。因此,寻找血清替代品和开发基于CHO的蛋白质生物制造的无血清培养基具有重要意义。本文系统总结了CHO细胞的应用优势和高密度表达策略。它强调了从人血小板裂解物到无动物提取物和微生物来源物质的血清替代品的发展趋势,并阐明了这些替代品增强CHO细胞培养性能和重组蛋白生产的机制,旨在为探索新型血清替代品和开发CHO细胞无血清培养基提供理论指导。
    The Chinese hamster ovary (CHO) cell is an epithelial-like cell that produces proteins with post-translational modifications similar to human glycosylation. It is widely used in the production of recombinant therapeutic proteins and monoclonal antibodies. Culturing CHO cells typically requires the addition of a certain proportion of fetal bovine serum (FBS) to maintain cell proliferation and passaging. However, serum is characterized by its complex composition, batch-to-batch variability, high cost, and potential risk of exogenous contaminants such as mycoplasma and viruses, which impact the purity and safety of the synthesized proteins. Therefore, search for serum alternatives and development of serum-free media for CHO-based protein biomanufacturing are of great significance. This review systematically summarizes the application advantages of CHO cells and strategies for high-density expression. It highlights the developmental trends of serum substitutes from human platelet lysates to animal-free extracts and microbial-derived substances and elucidates the mechanisms by which these substitutes enhance CHO cell culture performance and recombinant protein production, aiming to provide theoretical guidance for exploring novel serum alternatives and developing serum-free media for CHO cells.
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  • 文章类型: Journal Article
    有模棱两可的证据表明车前子可以预防或减轻空腹血糖的增加。因此,本系统评价和荟萃分析旨在研究车前子对血红蛋白A1C(HbA1c)的影响,空腹血糖(FBS),胰岛素,和胰岛素抵抗的稳态模型评估(HOMAIR)。我们搜索了PubMed,ISIWebofScience(WOS),和Scopus为合格的出版物,截至2022年7月15日,包括评估车前子对HbA1c影响的随机对照试验(RCT),FBS,胰岛素,和成人的HOMAIR水平。使用随机效应模型,我们以95%置信区间(CI)报告加权平均差(WMD).在这篇文章中,19项RCT研究,由962名参与者组成,包括在内。车前子显著降低FBS,HbA1c,和HOMAIR水平,但不是胰岛素水平,与安慰剂相比(FBS:WMD):-6.89;95%CI:-10.62,-3.16;p<.001),HbA1c:(大规模毁灭性武器:-0.75;95%CI:-1.21,-0.29;p<.001),霍马IR:(大规模杀伤性武器:-1.17;95%CI:-2.11,-0.23;p<0.05),和胰岛素:(WMD:-2.08;95%CI:-4.21,-0.035;p>.05))。亚组分析说明了车前子对FBS的影响的差异:小于和大于10g/d的剂量显示出显著差异(p值<0.05)。然而,干预时间少于50天的无显著性差异(p值>0.05).对于HbA1c:车前子消耗小于10g/d(p值>0.05)是不显著的。对于HOMAIR和胰岛素:车前子消耗量小于vs.超过10g/d。总之,我们发现车前子可以显着降低FBS,HbA1c,和HOMAIR水平,但不是胰岛素水平,与安慰剂相比。
    There is equivocal evidence that psyllium can prevent or attenuate increases in fasting blood sugar. Therefore, this systematic review and meta-analysis sought to investigate the influence of psyllium on hemoglobin A1C (HbA1c), fasting blood sugar (FBS), insulin, and Homeostatic Model Assessment of Insulin Resistance (HOMA IR). We searched PubMed, ISI Web of Science (WOS), and Scopus for eligible publications, up to 15 July 2022, including randomized controlled trials (RCT) assessing the effect of psyllium on HbA1c, FBS, insulin, and HOMA IR levels in adults. Using a random effects model, we report the weighted mean differences (WMD) with 95% confidence intervals (CI). In this article, 19 RCT studies, consisting of 962 participants, were included. Psyllium significantly decreased FBS, HbA1c, and HOMA IR levels, but not insulin levels, as compared to placebo (FBS: WMD): -6.89; 95% CI: -10.62, -3.16; p < .001), HbA1c: (WMD: -0.75; 95% CI: -1.21, -0.29; p < .001), HOMA IR: (WMD: -1.17; 95% CI: -2.11, -0.23; p < .05), and insulin: (WMD: -2.08; 95% CI: -4.21, -0.035; p > .05)). Subgroup analyses illustrated differences in the effects of psyllium on FBS: dosages less than and more than 10 g/d showed significant differences (p value < 0.05). However, it was not significant in intervention durations less than 50 days (p value > 0.05). For HbA1c: psyllium consumption less than 10 g/d (p value > 0.05) was non-significant. For HOMA IR and insulin: no significant changes were noted with psyllium consumption less than vs. more than 10 g/d. In conclusion, we found that psyllium could significantly decrease FBS, HbA1c, and HOMA IR levels, but not insulin levels, as compared to placebo.
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  • 文章类型: Journal Article
    实现良好的血糖控制对于降低糖尿病并发症的风险至关重要。胰岛素是实现良好血糖控制的最有效疗法;然而,它与低血糖的高风险有关,尤其是人类胰岛素。这项研究旨在评估从人类到类似物胰岛素的强化功效及其增加的成本。
    这项回顾性研究是在马来西亚附属大学医院(HUSM)进行的。这项研究包括2型糖尿病(T2DM)患者,其从人胰岛素到类似物胰岛素至少经历了3个月的强化治疗。病人的医疗记录,检索血红蛋白A1c(Hba1c)和空腹血糖(FBS)。从药房数据库获得胰岛素强化前后的总成本。HbA1c的差异,分析了强化前后的FBS和总胰岛素成本。
    本研究纳入了163名T2DM患者,这些患者从人胰岛素强化到类似物胰岛素强化。HbA1c和FBS水平在类似物胰岛素中显著降低。然而,差异没有临床意义,因为HbA1c的平均降低小于0.5%。同时,3个月的类似物胰岛素总费用较高.
    胰岛素强化后,患者的HbA1c和FBS没有临床显着改善,尽管花费了额外的费用。因此,至关重要的是选择正确的患者组接受胰岛素类似物,以最大限度地提高其效益,但以最佳的成本。
    UNASSIGNED: Achieving good glycaemic control is essential to reducing the risk of diabetes complications. Insulin is the most effective therapy for achieving good glycaemic control; however, it is associated with a higher risk of hypoglycaemia, especially with human insulin. This study aimed to evaluate the efficacy of intensification from human to analogue insulin and its added cost.
    UNASSIGNED: This retrospective study was conducted at the Hospital Universiti Sains Malaysia (HUSM). Patients with type 2 diabetes mellitus (T2DM) who underwent intensification for at least 3 months from human to analogue insulin were included in this study. The patients\' medical records, haemoglobin A1c (Hba1c) and fasting blood sugar (FBS) were retrieved. The total cost pre- and post-intensification of insulin was obtained from the pharmacy database. Differences in HbA1c, FBS and total insulin cost pre- and post-intensification were analysed.
    UNASSIGNED: A total of 163 patients with T2DM who had intensification from human to analogue insulin were included in this study. HbA1c and FBS levels were significantly lower in analogue insulin. However, the differences were not clinically significant, as the mean reduction in HbA1c was less than 0.5%. Meanwhile, the total costs of analogue insulin for 3 months were higher.
    UNASSIGNED: There were no clinically significant improvements in patients\' HbA1c and FBS after the intensification of insulin, despite the extra costs spent. Hence, it is vital to choose the right group of patients to receive an insulin analogue to maximise its benefit but at the most optimal cost.
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  • 文章类型: Journal Article
    通过配体观察到的1DNMR进行的基于片段的筛选和通过蛋白质观察到的2DNMR进行的结合界面作图是药物发现中使用的流行方法。这些方法使研究人员能够在广泛的亲和力范围内检测化合物的结合,并同时评估溶解度。纯度,通过1D和2DNMR检查时,目标化合物和15N标记蛋白质的化学式准确性,分别。这些方法可用于筛选与致癌KRAS突变体的活性(GMPPNP-结合)和非活性(GDP-结合)状态结合的片段。
    Fragment-based screening by ligand-observed 1D NMR and binding interface mapping by protein-observed 2D NMR are popular methods used in drug discovery. These methods allow researchers to detect compound binding over a wide range of affinities and offer a simultaneous assessment of solubility, purity, and chemical formula accuracy of the target compounds and the 15N-labeled protein when examined by 1D and 2D NMR, respectively. These methods can be applied for screening fragment binding to the active (GMPPNP-bound) and inactive (GDP-bound) states of oncogenic KRAS mutants.
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  • 文章类型: Journal Article
    多巴胺-2受体激动剂,溴隐亭和卡麦角林,最初被引入用于泌乳素瘤,垂体瘤,和帕金森病,但有降糖作用。本文系统综述了多巴胺2受体激动剂对糖化血红蛋白(HbA1c)和空腹血糖(FBS)的影响,并进行了全面系统的检索,以确定多巴胺2受体激动剂对糖化血红蛋白(HbA1c)和空腹血糖(FBS)的相关临床试验。
    我们在数据库中进行了系统的综述搜索(PubMed,谷歌学者,科克伦图书馆,寄存器,和引文),直到2022年11月30日,使用PRISMA2020声明。牛津质量评分(Jadad评分)用于评估研究质量。本研究方案在PROSPERO数据库上注册,ID:CRD42023389582。该研究包括完整摘要的研究,预定剂量,明确的干预措施,和血糖测量。
    数据来自招募6125名研究对象的23项临床研究。临床试验的汇总效应分析显示,多巴胺2激动剂改善了HbA1c[SMD=-1.26;95%CI(-1.60,-0.93),P<.00001],和FBS[SMD=-1.84;95%CI(-2.61,-1.07),P<.00001].每种药物的混合效应分析表明溴隐亭显着改善了HbA1c[SMD=-1.25;95%CI(-1.64,-0.87),P<.00001]和FBS[SMD=-1.90;95%CI(-2.79,-1.01),P<.00001]和类似的,卡麦角林显着改善HbA1c[SMD=-1.29;95%CI(-1.96,-0.62),P<.00001]和FBS[SMD=-1.62;95%CI(-2.82,-0.41),P<.00001].汇总和单独的分析表明,多巴胺2激动剂在临床研究中具有降低血糖水平的显着能力。
    这项研究表明,多巴胺2激动剂显着降低了FBS和HbA1c的水平,而不会引起严重的负面影响。即使结果很有希望,额外的研究是必要的,以建立适当的抗高血糖剂量,日常使用的频率,副作用,和潜在的产物相互作用时,使用多巴胺2受体激动剂的抗高血糖作用。
    UNASSIGNED: The Dopamine-2 receptor agonists, Bromocriptine and Cabergoline, were originally introduced for prolactinomas, pituitary tumors, and parkinson\'s disease but have glucose-lowering effects. This paper systematically reviewed the significance of their effects on lowering blood glucose level and conducted a comprehensive systematic search to identify relevant clinical trials of dopamine 2 agonists on glycated hemoglobin (HbA1c) and fasting blood sugar (FBS).
    UNASSIGNED: We conducted a systematic review search in the databases (PubMed, Google Scholar, Cochrane Library, Registers, and Citations) until November 30, 2022, using the PRISMA 2020 statement. The Oxford quality score (Jadad score) was used to assess the study\'s quality. The present study protocol was registered on the PROSPERO database with ID: CRD42023389582. The study included studies with full abstracts, predefined doses, clear interventions, and blood glucose measurements.
    UNASSIGNED: Data were synthesized from 23 clinical studies that recruited 6125 study subjects. The pooled effect analysis of the clinical trials revealed that dopamine 2 agonists improved HbA1c [SMD = -1.26; 95% CI (-1.60, -0.93), P < .00001], and FBS [SMD = -1.84; 95% CI (-2.61, -1.07), P < .00001]. Each drug\'s pooled effect analysis indicates bromocriptine significantly improved HbA1c [SMD = -1.25; 95% CI (-1.64, -0.87), P < .00001] and FBS [SMD = -1.90; 95% CI (-2.79, -1.01), P < .00001] and similarly, cabergoline significantly improved HbA1c [SMD = -1.29; 95% CI (-1.96, -0.62), P < .00001] and FBS [SMD = -1.62; 95% CI (-2.82, -0.41), P < .00001]. The pooled and individual analyses demonstrated that dopamine 2 agonists have a significant ability to lower blood glucose levels in clinical studies.
    UNASSIGNED: This study shows that dopamine 2 agonists significantly lowered FBS and HbA1c levels without causing severe negative effects. Even though the results are promising, additional research is necessary to establish the appropriate antihyperglycemic dosage, frequency of daily use, side effects, and potential product interactions when employing dopamine 2 receptor agonists for their antihyperglycemic effect.
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  • 文章类型: Journal Article
    Pv11来自睡眠的摇蚊Polypedilumvanderplanki的胚胎,表现出一种极端形式的脱水耐受性,称为脱水生物。用高浓度海藻糖预处理允许Pv11细胞进入脱水生物。在干燥状态下,Pv11细胞保留转基因荧光素酶,同时保留其活性。因此,这些细胞可用于干燥保存抗体,酶,信号蛋白或其他有价值的生物材料没有变性。然而,Pv11细胞悬浮生长,这限制了它们的适用性;例如,它们不能集成到微流体设备中或用于传感器芯片等设备中。因此,在本文中,我们开发了一种有效的Pv11细胞固定化系统,至关重要的是,使它们即使在固定时也能保持其脱水生物的潜力。Pv11细胞表现出非常高的粘附率,具有生物相容性膜锚(BAM)和Cell-Tak涂层,据报道对其他培养细胞有效。我们还发现,如果在无血清培养基中处理,Pv11细胞可以很好地固定在未涂覆的玻璃上。有趣的是,当在细胞固定之前进行海藻糖处理时,Pv11细胞显示出脱水耐受性。相比之下,固定Pv11细胞后的海藻糖处理导致脱水耐受性显着降低。因此,在固定化前诱导脱水是很重要的。总之,我们报告了成功开发了一种用于固定化Pv11细胞的干燥保存方案。
    在线版本包含补充材料,可在10.1007/s10616-023-00592-0获得。
    Pv11 was derived from embryos of the sleeping chironomid Polypedilum vanderplanki, which displays an extreme form of desiccation tolerance known as anhydrobiosis. Pre-treatment with a high concentration of trehalose allows Pv11 cells to enter anhydrobiosis. In the dry state, Pv11 cells preserve transgenic luciferase while retaining its activity. Thus, these cells could be utilized for dry-preserving antibodies, enzymes, signaling proteins or other valuable biological materials without denaturation. However, Pv11 cells grow in suspension, which limits their applicability; for instance, they cannot be integrated into microfluidic devices or used in devices such as sensor chips. Therefore, in this paper, we developed an effective immobilization system for Pv11 cells that, crucially, allows them to maintain their anhydrobiotic potential even when immobilized. Pv11 cells exhibited a very high adhesion rate with both biocompatible anchor for membrane (BAM) and Cell-Tak coatings, which have been reported to be effective on other cultured cells. We also found that Pv11 cells immobilized well to uncoated glass if handled in serum-free medium. Interestingly, Pv11 cells showed desiccation tolerance when trehalose treatment was done prior to immobilization of the cells. In contrast, trehalose treatment after immobilization of Pv11 cells resulted in a significant decrease in desiccation tolerance. Thus, it is important to induce anhydrobiosis before immobilization. In summary, we report the successful development of a protocol for the dry preservation of immobilized Pv11 cells.
    UNASSIGNED: The online version contains supplementary material available at 10.1007/s10616-023-00592-0.
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  • 文章类型: Journal Article
    我们使用前爪桶子场(FBS),通常从前爪皮肤表面接收输入,在大鼠初级体感皮层中作为模型系统,以研究快速和延迟的下颌到前爪皮层重组。FBS神经元的单单元和多单元记录用于检查FBS是否存在“新”下颌输入,包括前肢截肢,臂丛神经切断,臂丛神经麻醉.主要发现如下:(1)前肢脱脂后立即,来自下颌的新输入在前FBS中表达;(2)前肢截肢后7-27周,来自下颌的新输入在前FBS和后FBS中均有表达;(3)与来自前爪的输入到达FBS或来自下颌的输入到达LJBSF的对照潜伏期相比,在对下颌皮肤表面进行电刺激后,在快速和延迟的去电FBS中记录的诱发反应潜伏期明显更长;(4)较长的时间表明,沿着下颌的感觉传导途径施加的附加输入潜伏期。我们得出的结论是,不同的投入来源和不同的机制是FBS快速和延迟重组的基础,并表明这些发现是相关的,作为第一步,用于开发啮齿动物模型以研究幻肢现象。
    We used the forepaw barrel subfield (FBS), that normally receives input from the forepaw skin surface, in rat primary somatosensory cortex as a model system to study rapid and delayed lower jaw-to-forepaw cortical reorganization. Single and multi-unit recording from FBS neurons was used to examine the FBS for the presence of \"new\" lower jaw input following deafferentations that include forelimb amputation, brachial plexus nerve cut, and brachial plexus anesthesia. The major findings are as follows: (1) immediately following forelimb deafferentations, new input from the lower jaw becomes expressed in the anterior FBS; (2) 7-27 weeks after forelimb amputation, new input from the lower jaw is expressed in both anterior and posterior FBS; (3) evoked response latencies recorded in the deafferented FBS following electrical stimulation of the lower jaw skin surface are significantly longer in both rapid and delayed deafferents compared to control latencies for input from the forepaw to reach the FBS or for input from lower jaw to reach the LJBSF; (4) the longer latencies suggest that an additional relay site is imposed along the somatosensory pathway for lower jaw input to access the deafferented FBS. We conclude that different sources of input and different mechanisms underlie rapid and delayed reorganization in the FBS and suggest that these findings are relevant, as an initial step, for developing a rodent animal model to investigate phantom limb phenomena.
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  • 文章类型: Journal Article
    用胎牛血清(FBS)处理纤毛虫四膜虫的培养物可提高细胞增殖的速率。生长促进活性从FBS中部分纯化为高Mr复合物,包括四个明显的Mr值为180kDa的组分,68kDa,60kDa和30kDa的4步程序。通过氨基酸测序将180kDa组分鉴定为α2-巨球蛋白。还发现从牛血浆中添加纯化的α2-巨球蛋白到四膜虫培养物中可提高细胞增殖速率。该报告是第一个直接鉴定促进自由生活原生动物生长的哺乳动物因子的报告。
    Treatment of cultures of the ciliate Tetrahymena with fetal bovine serum (FBS) enhanced the rate of cell proliferation. The growth promoting activity was partially purified from FBS as a high Mr complex including four components with apparent Mr values of 180 kDa, 68 kDa, 60 kDa and 30 kDa by a 4-step procedure. The 180 kDa component was identified by amino acid sequencing as α2-macroglobulin. The addition of purified α2-macroglobulin from bovine plasma to cultures of Tetrahymena was also found to enhance the rate of cell proliferation. This report is the first dealing with the direct identification of a mammalian factor which promotes the growth of free-living protozoa.
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