活力苏口服液对自然衰老小鼠肝、脑、肾组织p16基因表达的影响

目的观察活力苏口服液对自然衰老小鼠肝、脑、肾组织p16基因的影响,探讨活力苏口服液抗衰老的机制。方法取自然衰老小鼠,给予活力苏口服液治疗,采用实时荧光定量PCR法观察小鼠肝、脑、肾组织p16基因的mRNA表达。结果在肝、脑、肾组织中,活力苏口服液各剂量组均能降低p16基因mRNA表达,与衰老模型对照组比较均有显著性差异(P均<0.01)。结论活力苏能降低自然衰老小鼠肝、脑、肾组织p16基因的表达,发挥抗衰老作用。     

Treatment of subclinical varicocele with acupuncture: A case report

Varicocele is a vascular lesion characterized by abnormal dilatation and/or tortuosity of the veins of the pampiniform plexus, which sometimes manifests as chronic, dull pain in the scrotum, testicle or inguinal area. Subclinical varicocele (SCV) is as an early phase in the progression of its clinical analog. Given the lack of relevant studies on treatment strategies, no conclusive answer exists regarding how SCV should be managed. In this case report, a 40-year-old male patient visited our acupuncture outpatient clinic for left-sided scrotal pain and heaviness caused by SCV. After ten sessions of acupuncture treatments (acupuncture was performed at Zhongji (CV3), Guanyuan (CV4), qihai (CV6) and bilateral Guilai (ST29), Hegu (LI4), Taichong (LR3), Zusanli (ST36), Sanyinjiao (SP6), with electroacupuncture (EA) stimulation at Qihai (CV6) and Zhongji (CV3) as well as Guilai (ST29) on both sides), the patient was symptom-free. More unexpectedly, ultrasound reexamination showed no obvious abnormalities in bilateral spermatic veins. From this case, we conclude that acupuncture may be an effective alternative therapy for SCV treatment.     

肾虚证的基因 蛋白 代谢组学研究进展

从系统生物学角度对不同病种的肾虚证患者和肾虚模型动物的研究,目前已建立了部分肾阳虚、肾阴虚证的基因组学、蛋白组学和代谢组学数据库,为下一步揭示中医肾虚证的本质提供了客观的指标和依据。     

川芎嗪对心血管作用研究进展

川芎嗪（Ligustrazine）是从中药川芎中提取的一种活性生物碱单体,随着对川芎嗪研究的不断深入,其临床应用范围亦日趋广泛,尤其对心血管疾病有显著的疗效。川芎嗪化学结构为四甲基吡嗪,其四个甲基被不同的功能基团替代后可产生不同效应,研究发现川芎嗪对心血管系统的作用有多种不同的作用途径和作用机制。本文仅介绍川芎嗪对心血管系统作用的研究进展。     

白花蛇舌草对裸鼠宫颈癌细胞增殖和凋亡的实验研究

目的：探究白花蛇舌草对宫颈癌的抑制作用及可能的分子生物学机制。方法：建立裸鼠人宫颈癌细胞移植模型及采用胃内灌药。当肿瘤生长至直径10mm时,将荷瘤鼠随机分组,比较给药组与对照组在抑瘤率、生存时间、HeLa细胞Ki-67抗原蛋白的表达率以及肿瘤组织凋亡上的差异。结果：白花蛇舌草对HeLa细胞移植瘤生长有明显抑制作用,并可诱导HeLa细胞凋亡,Ki-67蛋白的表达下降（P〈0.05）,并明显延长荷瘤小鼠的平均生存时间（P〈0.05）。结论：白花蛇舌草通过直接抑瘤增殖和诱导、促进肿瘤细胞凋亡,实现了其清热解毒、软坚散结的作用。     

清肠化湿方对实验性结肠炎小鼠IL-6反式信号转导的影响

目的：观察清肠化湿方对实验性结肠炎小鼠白介素6（IL-6）反式信号转导trans-signaling的影响,初步探讨该方治疗溃疡性结肠炎（UC）作用机制是否与调控IL-6 trans-signaling有关。方法： TNBS法制备小鼠结肠炎模型,药物干预后,ELISA法检测可溶性白细胞介素6受体（sIL-6R）含量,实时荧光定量PCR法检测IL-6、糖蛋白130（gp130）mRNA 相对表达水平,Western Blot法观察结肠黏膜IL-6、gp130蛋白的表达情况。结果：模型组小鼠sIL-6含量、IL-6及gp130 mRNA和蛋白表达水平较正常小鼠明显增高。清肠化湿方可以降低实验性结肠炎小鼠结肠sIL-6水平（P<0.01）,降低IL-6及gp130mRNA 和蛋白表达水平（P< 0.01）。 结论：清肠化湿方对小鼠实验性结肠炎发挥良好抗炎效应,可能与调控IL-6 trans-signaling有关。     

血小板明显波动的难治性贫血伴环状铁粒幼细胞增多的临床与生物学特征

为了探讨血小板明显波动的RARS与RARS—T在临床表现、分子生物学特征及预后转归的相关意义，采用骨髓细胞涂片和骨髓活检观察细胞形态学改变，用流式细胞术检测细胞免疫学特征，染色体分析检测细胞遗传学改变，应用AS—PCR、基因测序检测JAK2V617F、MPLW515L点突变。结果表明：本例患者确诊为RARS，多次发生血栓相关并发症，血钾水平与血小板计数呈正相关。血小板计数增高时，外周血及骨髓涂片中发现巨大畸形血小板，血小板大簇易见；骨髓活检示巨核细胞数量显著增多；JAK2V617F、MPLW515L基因突变均阴性。结论：RARS可向RARS—T转化，伴骨髓巨核细胞增殖、巨大畸形血小板、JAK2 V617F可能为阴性。病程中出现巨大血小板、血小板计数明显波动时同样要高度重视相关血栓事件的防治，监测相关基因突变。     

Low-dose of multi-glycoside of Tripterygium wilfordii Hook. f., a natural regulator of TGF-β1/Smad signaling activity improves adriamycin-induced glomerulosclerosis in vivo

Ethnopharmacological relevance

Transforming growth factor (TGF)-β1/Smad signaling pathway plays a critical role in the prolonged glomerulosclerosis (GS), which is an important determinant during the progression in chronic kidney disease (CKD). For recent 30 years, multi-glycoside of Tripterygium wilfordii Hook. f. (GTW), an extract from Chinese herbal medicine has been proved clinically effective in improving GS in CKD in China. However, therapeutic mechanisms involved in vivo are still unclear. In this study, we aimed to explain the dose-effects and molecular mechanisms of GTW on GS by regulating TGF-β1/Smad signaling activity in adriamycin (ADR)-induced nephropathy (ADRN).

Materials and methods

Rats with ADRN, created by unilateral nephrectomy and twice adriamycin injections (ADR, 4 mg/kg and 2 mg/kg) within 4 weeks, were divided into four groups, the Sham group, the Vehicle group, the low-dose GTW-treated group, and the high-dose GTW-treated group, and that, sacrificed at the end of the 6th week after administration. Proteinuria, blood biochemical parameters, glomerulosclerotic morphological makers, podocyte shape, and nephrin expression were examined, respectively. Protein expressions of key signaling molecules in TGF-β1/Smad pathway, such as TGF-β1, Smad3, phosphorylated-Smad2/3 (p-Smad2/3), and Smad7, were also evaluated individually.

Results

The results indicated that the characterizations of ADRN involved the typical prolonged GS, a small amount of abnormal proteinuria, and the failing renal function; TGF-β1/Smad signaling molecules, especially Smad3, p-Smad2/3, and Smad7 were activated in vivo, accompanied by the exasperation of glomerulosclerotic lesion; GTW at high-dose (100 mg/kg) and low-dose (50 mg/kg) could slightly ameliorate the prolonged GS and nephrin expression, furthermore, the anti-proliferative action of GTW at high-dose was superior to that at low-dose, but caused the significant liver injury; in ADRN model rats, protein expressions of TGF-β1, p-Smad2/3, and Smad7 in the kidneys could be regulated with the treatment of GTW at low-dose.

Conclusion

This study farther demonstrated that the low-dose of GTW, as a natural regulator in vivo, could effectively and safely ameliorate the prolonged GS in FSGS model, via the potential molecular mechanisms involving the reduction of ECM components and the suppression of TGF-β1 over-expression, as well as the bidirectional regulation of TGF-β1/Smad signaling activity.     

健脾化瘀方对胃癌细胞SGC-7901凋亡和周期的影响

目的:观察健脾化瘀方体外对人胃癌细胞株SGC-7901增殖、凋亡及细胞周期的影响。方法:①采用MTT法观察不同浓度健脾化瘀方体外对人胃癌细胞株SGC-7901增殖的抑制作用;②用Annexin V/PI荧光双染法检测健脾化瘀方诱导肿瘤细胞进入凋亡的影响;③用流式细胞仪检测健脾化瘀方对SGC-7901细胞周期的阻滞效应。结果:①健脾化瘀方能抑制人胃癌细胞SGC-7901增殖,随着药物浓度的增大以及作用时间的延长,其对细胞的抑制率也明显增强,呈现剂量及时间依赖性。②当2mg/ml和4mg/ml健脾化瘀方作用于人胃癌SGC-7901细胞48h可显著诱导细胞凋亡的产生。③细胞周期方面,健脾化瘀方作用于人胃癌细胞SGC-7901后G2/M期比例与阴性对照组相较显著上升,G0/G1期稍有上升,而S期比例下降,表明细胞被阻滞于G2/M期。结论:健脾化瘀方可明显抑制人胃癌细胞SGC-7901的增殖作用并能够诱导该细胞凋亡,改变细胞周期。