测定甲状腺激素在判断重症病例预后中的价值

目的:通过测定重症疾病患者甲状腺激素(TH),判断其在病情严重程度及疾病预后中的价值.方法:把重症疾病分为三组,分别采用放射免疫分析(RIA)测定血清甲状腺激素进行对照,并作统计学处理.结果:与正常人组比较重症疾病组血清T3、FT3显著降低,rT3浓度升高,T4、FT4、TSH无明显变化.结论:非甲状腺疾病重症病例血清T3、rT3、FT3含量变化与疾病严重程度相关,激素含量在治疗中的变化预示疾病转归情况.     

Protective effects of astragaloside IV on porcine-serum-induced hepatic fibrosis in rats and in vitro effects on hepatic stellate cells

Ethnopharmacological relevance

Astragaloside IV is the primary pure saponin isolated from Astragalus membranaceus, one of the valuable traditional medical herbs. Antifibrotic activities of Astragalus membranaceus have been extensively proved.

Aim of the study

To investigate the effects of astragaloside IV on hepatic stellate cells (HSCs) and hepatic fibrosis in rats induced by porcine-serum (PS).

Materials and methods

Liver fibrosis was induced by PS injection (0.5 ml, twice a week) for 12 weeks. Astragaloside IV (2.0, 4.0 mg kg⁻¹) was administered intragastrically. Liver samples were subjected to histological and immunohistochemical studies. In vitro effects of astragaloside IV on primary cultured HSCs were detected by incorporation assays.

Results

Astragaloside IV delayed the formation of liver fibrosis and decrease the serum levels of hyaluronic acid (HA), procollagen type III (PCIII) and hydroxyproline (Hyp) content in liver. The levels of transforming growth factor-β₁ (TGF-β₁) in serum and expression in liver were significantly decreased by astragaloside IV. Collagen synthesis and proliferation were significantly inhibited by astragaloside IV (1.5, 3.0, 6.0, 12.0 and 24.0 mg L⁻¹) in HSCs.

Conclusion

The results showed that astragaloside IV displays antifibrotic effects in rats induced by PS, the mechanism by which might be associated with its inhibitory effects on collagen synthesis and proliferation in HSCs.     

丙型病毒性肝炎患者血清瘦素的检测

研究丙肝患者血清leptin水平的变化。采用RIA检测65例丙肝组患者,80名对照组血清leptin水平,以及各种生化指标,比较各组的leptin水平以及leptin与各生化指标的相关性。结果显示慢性丙肝患者血清leptin水平较对照组明显升高(P<0.01);血清leptin水平与谷丙转氨酶(ALT)、谷草转氨酶(AST)呈显著性正相关(P<0.05);而与血糖(Glu)、总胆固醇(TC)无明显相关性(P>0.05)。慢性丙肝患者血清leptin水平升高且与肝脏炎症病变严重程度有关,leptin可以作为一个判断肝脏炎症严重程度的指标。     

急性颅脑损伤颅内出血、脑梗死患者血浆Hcy、NPY、β2-m和Cor水平的临床意义

目的:为了探讨急性颅脑损伤颅内出血和脑梗死患者血浆(CSF)中Hcy、β2-m、皮质醇(Cor)和神经肽Y(NPY)的临床意义.方法:68例急性颅脑损伤颅内出血,39例脑梗死和35例正常对照组血浆β2-m、Cor(8h和24h)和NPY(CSF)的测定应用放射免疫分析,血浆Hcy的测定采用化学发光免疫分析.结果:急性颅脑损伤颅内出血和脑梗死患者血浆Hcy和β2-m水平明显高于正常对照组(P＜0.01),全部病例组的8h和24h的Cor均高于正常对照组(P＜0.01),并随着疾病的严重程度而增高,8例急性颅脑损伤颅内出血治疗后死亡的病例,血浆Cor持续增高,而脑脊液中NPY水平较之血浆更具诊断意义.结论:血浆和脑脊液中的Hcy、β2-m、NPY和Cor参与急性颅脑损伤颅内出血和脑梗死发生和发展过程,并具有重要的临床意义.     

三种血清肿瘤标志物在胃癌诊断中的应用

目的 :探讨癌胚抗原 (CEA)和糖类相关抗原 (CA19- 9、CA72 - 4 )三种肿瘤标志物在胃癌诊断、手术效果评价中的应用价值 ,并将它们联合检测 ,以提高临床诊断胃癌的灵敏度、有效诊断率。方法 :应用放射免疫分析 (RIA)法和生物素—链霉亲和素双抗夹心法测定 6 0例患有不同良性胃部疾病病人和 5 8例胃癌患者血清中CEA、CA19- 9及CA72 - 4的含量 ,并对癌症患者进行术后 3个月到 1年的动态随访监测。结果 :良性疾病组CEA为 (11 8± 3 7) μg/L ,CA19- 9为 (2 2 8± 9 9)KU/L ,CA72 - 4为 (2 1± 0 8)KU/L。胃癌患者血清中这三种肿瘤标志物的含量明显高于良性疾病组 ,差异均具有显著性意义 (P <0 0 1)。患者术后血清中CEA、CA19- 9及CA72 - 4水平较术前明显下降 (P <0 0 1)。将CEA、CA19- 9及CA72 - 4三者联合检测较单测任何一项其灵敏度和有效诊断率均有提高。结果 :三种血清肿瘤标志物联合检测可提高胃癌诊断的灵敏度、特异性及有效诊断率 ,胃癌患者血清中三种标志物含量变化对胃癌的诊断、疗效监测有重要的临床意义