目的 探討HIF-1α和BAK蛋白在胃癌中的表達情況，以及二者在胃癌中的相互關系及作用。方法 應用免疫組化SABC染色法檢測80例胃癌組織和20例正常胃組織中的HIF-1α和BAK蛋白的表達情況。結果 胃癌中HIF-lα和BAK蛋白的表達陽性率分別為56.3%（45/80）和67.5%（54/80），而在胃正常組織中分別為5.0%（1/20）和20.0%（4/20），二者在胃癌中的表達顯著高于胃正常組織，其差異有統計學意義（P＜0.05）。HIF-1α蛋白表達與胃癌組織的浸潤范圍、分化程度及淋巴結轉移有關（P＜0.05），與臨床分期、年齡及性別無關（P＞0.05）；BAK蛋白表達與胃癌浸潤及分化程度相關（P＜0.05），與淋巴結轉移、臨床分期、年齡及性別無關（P＞0.05）。胃癌組織中HIF-1α與BAK蛋白的陽性表達之間呈正相關（列聯系數r=0.056，P＜0.05）。結論 HIF-1α與BAK蛋白在胃癌的臨床分期及浸潤轉移中存在關系，這對于研究胃癌的發生和發展，以及對于探索以二者為靶點的抗腫瘤治療有重要意義。
摘要:目的:分析本院住院城鎮及農村患者的乙型肝炎病毒感染及免疫情況,推測不同區域發病及免疫狀況,為免疫預防及臨床提供參考。方法:收集我科2000年度,2004年度,2008年度住院患者的乙肝五項檢測報告,按患者長期居住地分為農村組及城鎮組,對比分析兩組患者乙型肝炎病毒感染、具有免疫力及無免疫力年度變化情況及不同組別的差異。結果:同農村組相比,城鎮組乙型肝炎病毒感染率、無免疫率低于農村組,免疫率高于農村組。年度對比乙型肝炎病毒感染率及免疫率呈上升趨勢,無免疫率呈下降趨勢。結論:近年來乙型病毒性肝炎發病有上升趨勢,農村地區免疫普及率相對較低,仍為發病及預防免疫的重點區域,應給予足夠重視。Abstract: Objective: To observe the disposition of infection and immunifaction on type B hepatitis in patients from hospital, suppose the disposition of infection and immunifaction in differently region, and provide information for immunifaction and clinical treatment. Methods: Reports of type B hepatitis from patients in hospital were collected, and were divided into town group and country group according to the habitation of patients. The difference of infection, immunifaction and no immunifaction were compared between two groups. Results: In comparison with the country group, the percentage of infection and no immunifaction was lower in town, and immunifaction was higher, attack rate of type B hepatitis had a tendency to increasing and no immunifaction was decreased by contrasting with annum. Conclusion: Recent years, attack rate of type B hepatitis has a tendency to increasing, and the popular rate of immunifaction is lower in country, so country is still the focal point of immunifaction and infection, and sufficient attention must be paid.
Experimental uveitis was induced in rabbits by bovine serum albumin. Ocular inflammation,protein content of aqueous humor,T lymphocyte transformation and serum circulating immune complex were reduced markedly after the treatment of tetrandrine (Tet, 50mg/kg/d,ip)and dexamethasone(Dex, 5mg/kg/d,ip)for 8 days. Four days after withdrawal of Tet and Dex the protien content of the aqueous humor and serum eiucrlating immune complexes rose again,but these parameters in Tet group is lower than that in Dex group. The pathological study showed that inflammation of choroid in Tet treated group was lighter than that in untreated group. These results suggest that Tet is an effective inhibitory agent on bovine serum albumin-induced experimental uveitis. Its mechanism may be related to the suppression of cellular and humoral immune function aside from antiinflammation. （Chin J Ocul Fundus Dis,1994,10:149-152）
Objective To study the expression of p16 and Rb gene in primary gallbladder carcinoma (PGC). MethodsFiftysix cases of PGC and 26 of gallbladder benign lesions were observed by immunohistochemistry (SP). ResultsThe positive rates of p16 and Rb protein in PGC were 46.3% and 71.4% respectively. No association of Rb expression with histological grade, histological type, invasion, metastasis and prognosis was found. There were close correlation between p16 expression and invasion, metastasis as well as prognosis. The inverse correlation of p16 and Rb gene expression in PGC was confirmed. Conclusion The loss of p16 or Rb gene protein is an important molecular event in PGC,and closely related to the block in the negative regulatory pathway of all cell cycle. The detection of p16 protein may be useful in evaluating biological characteristics and prognosis in PGC.
Objective To study the relationships between expressions of somatostatin receptor subtypes（SSTR1-SSTR5） and angiogenesis in colorectal cancer. Methods The expressions of SSTR1-SSTR5, VEGF, and CD34 in the paraffin sections of colorectal cancer tissues from 127 cases were detected by the standard streptavidin-peroxidase (SP) technique. CD34 was used as a marker to account microvessel density (MVD) in colorectal cancer tissues. The relationships between the expressions of SSTR1-SSTR5 and VEGF expression, or MVD were analyzed. Results The positive expression rate of SSTR1, SSTR2, SSTR3, SSTR4, and SSTR5 was 64.6% （82/127）, 36.2% （46/127）, 18.9% （24/127）, 18.9% （24/127）, and 38.6% （49/127） in colorectal cancer tissues, meanwhile, the positive expression rate of VEGF was 63.8% （81/127） and MVD was (34.67±16.62)/HP in colorectal cancer tissues. The positive expression rate of VEGF (47.8%， 22/46) and MVD 〔(29.00±15.32)/HP〕 in colorectal cancer tissues with SSTR2 positive expression were significantly lower than those in colorectal cancer tissues with SSTR2 negative expression 〔72.8%， 59/81； (37.90±16.56)/HP〕, Plt;0.05. There were no relationships between SSTR1, SSTR3, SSTR4, and SSTR5 expression and VEGF expression or MVD （Pgt;0.05）. Conclusion The positive expression of SSTR2 is related with angiogenesis in colorectal cancer tissues.
ObjectiveTo evaluate the clinical value of detecting specific IgG against Toxocara canis in intraocular fluid for the diagnosis of ocular toxocariasis(OT). MethodsFifty patients diagnosed as having OT(OT group), 152 otolaryngology patients (serum control group) and 70 other oculopathy patients (intraocular fluid control group) were enrolled in the study. Intraocular fluids(28 aqueous humor and 22 vitreous humor) and serum samples of OT group were analyzed for specific IgG against Toxocara canis by enzymelinked immunosorbent assay, so were the intraocular fluids(46 aqueous humor and 24 vitreous humor) and 152 serum samples of two control group. Specific IgG level was compared between paired serum and intraocular fluids of OT group. Results68.00% serum samples of OT group were positive for specific IgG against Toxocara canis and the U value was 20.42±17.01. The positive rate was 88.00% and U value 25.72±23.04 in intraocular fluids. In serum control group, it was 2.63% and 2.37±2.71 respectively. The intraocular fluids were negative and U value 0.69±0.34 in intraocular fluid control group. The difference of specific IgG level was proved significant between OT group and control group in both serum and intraocular fluid (Z=8.962, 8.120; P=0.000, 0.000). Twenty-eight patients (56.00%) were positive for specific IgG in both serum and intraocular fluid. Six patients (12.00%) were positive only in serum, and 16 patients (32.00%) only in intraocular fluid. The positive rate was significantly higher in intraocular fluid than in serum (χ2=4.720, P=0.028). Moreover, 64.00% intraocular fluid showed higher specific IgG level than pared serum. ConclusionThe complementary detection of intraocular specific IgG have referential value in diagnosing ocular toxocariasis.