特发性嗜酸性粒细胞增多综合症1例

病例男性,25岁,因“反复发热、咳嗽1个多月,加重伴胸痛2w”,于2006年10月17日入院。入院后查血常规WBC15.5×109/L,中性26%,淋巴8%,单核1%,嗜酸性粒细胞65%,嗜酸性粒细胞计数10.4×109/L,血沉64mm/h,结核抗体阴性,结核菌素试验阳性,多次痰涂片未查见抗酸杆菌。肝功生化及心肌酶     

儿童多吃碱性食物可提升智商

<正>英国科学家发现,人类大脑体液的酸碱度与智商有关系。在体液酸碱性允许的范围内,酸性时智商低,碱性时智商高。这与人体疲劳时机体内乳酸和尿素等酸性物质增多,体液酸性上升具有同样道理。     

CO中毒致迟发性脑病大鼠脑内CD4+T淋巴细胞浸润及神经胶质酸性蛋白的表达

目的观察CO中毒致迟发性脑病（DNS）大鼠脑内CD4^＋T淋巴细胞浸润以及神经胶质酸性蛋白（GFAP）的表达情况，探讨CO中毒致DNS的病理过程。方法25只SD雄性大鼠随机分为对照组、染毒后3、7、10、20d组，每组5只。采用HE和免疫组织化学染色方法，观察染毒后各时间点大鼠脑内病理形态学变化，及CD4^＋T淋巴细胞浸润和GFAP的表达情况。结果HE染色结果显示：各染毒组在大脑皮层及海马均出现神经细胞不同程度的变性、坏死，染毒后7d组最重。免疫组织化学染色结果显示：对照组无CD4^＋T淋巴细胞浸润，有少量GFAP表达；各染毒组不同脑区CD4^＋T淋巴细胞、GFAP均有不同程度的浸润和表达。CD4^＋T淋巴细胞染毒后3d开始浸润，7d达峰值，两者在数量上差异有统计学意义（P〈0．01）。各组染毒后GFAP均有大量表达，随染毒时间延长表达数量呈上升趋势。结论CD4^＋T淋巴细胞可能参与了CO中毒致DNS的免疫病理过程，GFAP阳性细胞对CO中毒引发的DNS可能具有保护作用。     

精浆α-糖苷酶和酸性磷酸酶活性与顶体酶活性的关系

目的研究精子顶体酶活性与精浆α-糖苷酶和酸性磷酸酶活性的关系。方法分光光度比色法测定精子顶体酶、酸性磷酸酶和α-1，4糖苷酶活性一结果精浆α-糖苷酶和酸性磷酸酶活性异常组顶体酶活性均明显低于其相应正常组(P＜0．001，P＜0．001)。顶体酶活性与精浆α-糖苷酶活性、酸性磷酸酶活性之间存在明显正相关(P＜0．001，P＜0．001)。结论精浆α-糖苷酶和酸性磷酸酶活性影响精子顶体酶活性。     

警惕儿童心理病“从口而入”

儿童孤独症患呈增多的趋势，已引起很多学的关注。研究人员发现，儿童孤独症的发生、发展与过量食用“酸性食物”密切相关。高脂肪、高糖和动物性食物中的磷、硫、氯等在人体内易于形成酸性物质，故有人把富含磷、硫、氯等成分的食物统称为“酸性食物”。若过量食用肉类、糖类等酸性食品，则易使血液等体液酸性化，呈现“酸性体质”。     

不同频率振动应变对成骨细胞增殖及分化能力的影响

目的 观察不同频率振动应变(vibration strain)对体外培养成骨细胞细胞周期、增殖能力及分化的影响,确定最佳振动频率.方法 应用自制复合振动仪,将振动强度0.5g(g为加速度),不同频段3～10、15～30、25～45、50～80和80～100Hz振动应变分别作用于成骨细胞,振动应变加载后分别检测细胞周期、细胞增殖能力(MTT法)及碱性磷酸酶(alkaline phosphatase, ALP)活性的变化.结果 15～30和25～45Hz频段诱导成骨细胞周期循环(P<0.01),促进细胞增殖(P<0.01),增强ALP活性(P<0.01);80～100和3～10Hz频段抑制细胞周期循环(P<0.01);80～100Hz频段抑制细胞增殖(P<0.01);50～80和80～100Hz频段抑制ALP活性(P<0.01).结论 不同频率振动应变对成骨细胞周期、增殖能力、ALP活性均有影响,振动应变促进成骨细胞增殖及分化的最佳频率为15～45Hz.     

幽门螺杆菌CagA及其致病作用的研究进展

CagA是幽门螺杆菌最重要的毒力因子之一，CagA阳性的Hp菌株同胃炎、萎缩性胃炎、十二指肠疾病和胃癌等消化道疾病相关。本文综述了Hp的毒力因子CagA的基因组、CagA定植于胃上皮细胞、CagA酪氨酸磷酸化位点、CagA入胞的靶向以及CagA多态性、毒性与胃癌的关系的近年研究状况。     

Effect of curcumin on nitric oxide synthase expression in Iipopolysaccharide-activated microglia cells and the anti-oxidative effect of curcumin

BACKGROUND: It has been demonstrated that curcumin can increase the activities of various anti-oxidase in blood and tissue, effectively eliminate various free radicals, reduce the production of peroxisome, and alleviate oxidative stress reaction. Whether it has the same effect on microglia? OBJECTIVE: To observe the effects of curcumin on the expressions of inducible nitric oxide synthase (iNOS), nuclear factor-κB (NF-κB), and superoxide dismutase (SOD) in microglial cell line BV stimulated by lipopolysaccharide (LPS). DESIGN: An observational comparative study. SETTING: Research Room of Biochemistry, Medical College of Nantong University. MATERIALS: Mice microglia cell line BV, iNOS and NF-κB reporter gene plasmids were presented by Dr. Bhat.NR. from the Medical University of South Carolina (USA). Curcumin was produced by the Xi'an Branch of China Chengdu Scholar Bio-Tech. Co.,Ltd.; LPS (E.Coli O26:B6), anti-mice iNOS monoclonal antibody, horseradish peroxidase labeled goat-anti-mice IgG were the products of Sigma Company (USA). METHODS: The experiments were carried out in the Research Room of Biochemistry, Medical College of Nantong University from May 2006 to April 2007. ① Detection of iNOS: The cells were seeded onto 24-well plate at the density of 1×105, After the cells had adhered to the cover glasses, the cells were grouped as negative control group (the primary antibody was replaced by phosphate buffered solution PBS); normal control group (the cells were normally cultured); LPS-treated group (the cells were treated with LPS for 24 hours); curcumin+LPS group (the cells were treated with curcumin for 1 hour and LPS for 24 hours). The expressions of iNOS protein were detected with immunocytochemical staining. ② Determination of iNOS and NF-κB gene activities: According to the introduction of the kit for transfection, iNOS or NF-κB report gene plasmids were transiently transfected with LipofectamineTM2000 liposomes into the cells in the 24-well plate for 24 hours. The cells were divided into normal control group (the cells were normally cultured after transfected with report gene plasmids); blank plasmid group (the cells were normally cultured after transfected with blank plasmids); LPS-treated group (the cells were treated with LPS for 4 hours after transfected with report gene plasmids); curcumin+LPS group (the cells were treated with curcumin for 1 hour and LPS for 24 hours after transfected with report gene plasmids). The content of luciferase in the cell lysis buffer was determined after cell lysis. ③ Determination of SOD activity: The cells were seeded into culture bottle at the density of 1×106, and the divided into four groups, including normal control group (the cells were normally cultured); LPS-treated group (the cells were treated with LPS for 24 hours); curcumin+LPS group (the cells were treated with curcumin for 1 hour and LPS for 24 hours); vitamin C+LPS group (the cells were treated with vitamin C for 1 hour and LPS for 24 hours). The SOD activity was determined with xanthine oxidase and quantitative colorimetric assay. MAIN OUTCOME MEASURES: The expressions of iNOS protein, iNOS and NF-κB, and the activity of SOD were observed. RESULTS: ① Expression of iNOS protein in microglia: The expression of iNOS protein in the LPS-treated group was obviously higher than that in the negative control group (P < 0.01); Those in the curcumin+LPS group were significantly decreased as compared with that in the LPS-treated group (P < 0.01). ② Expressions of iNOS and NF-κB genes: The expressions of iNOS and NF-κB genes in the LPS-treated group were significantly higher than those in the normal control group (P < 0.01); Those in the curcumin+LPS group were significantly lower than those in the LPS-treated group (P < 0.01). ③ SOD activity: The activity of SOD in the LPS-treated group was significantly lower than those in the normal control group (P < 0.01). It in the curcumin+LPS group and vitamin C +LPS group was significantly higher than that in the LPS-treated group (P < 0.01). CONCLUSION: Curcumin could inhibit the expression of iNOS in the activated microglia, and it also has the abilities in eliminating free radicals and antagonizing lipid peroxidation.     

嗜酸粒细胞增多性皮肤病

近年来，对嗜酸粒细胞大分子物质及其生物学作用的研究取得显著进展，深化人们对嗜酸粒细胞增多性疾病的认识和关注。Sade等对100例嗜酸粒细胞增多性疾病住院患者的回顾性分析中发现，哮喘和其他特应性疾病占13％，嗜酸性肺炎10％，肿瘤10％，感染10％，原因不明34％，而特发性嗜酸粒细胞增多综合征、Churg-Strauss综合征、皮肤病、药物过敏和真菌过敏占23％。足见与皮肤病相关疾病占相当大的比例。[第一段]     

嗜酸性粒细胞性胃肠炎三例临床分析

嗜酸性粒细胞性胃肠炎是一种消化道组织中嗜酸性粒细胞浸润的少见疾病,其病因及发病机制尚不清楚.该病于1937年由Kaijser首次报道,至1997年文献报道仅300余例 [1].由于其临床表现多样且尤特异性,误诊率很高.我们于2003年9月至2008年9月共收治嗜酸性粒细胞性胃肠炎患者3例,对其临床资料分析如下.