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11.
The functional of B-L (Ia-equivalent)-positive (B-L+) adn -negative (B-L-) chicken peripheral blood lymphocytes (PBL) was studied in vitro and in vivo. The PBL were first stained in direct immunofluorescence tests with a fluorescein isothiocyanate-labelled anti-B-L alloantiserum and then separated by means of a fluorescence-activated cell sorter. In agreement with our previous findings, B-L- cells showed functional properties of T lymphocytes, responding to concanavalin A and phytohaemagglutinin-P in vitro and inducing a graft-versus-host (GVH) reaction when injected into allogeneic embryos. Sorted B-L+ gave no responses in any of these assays. Neither B-L+ nor B-L- cells, when tested alone, responded significantly to pokeweed mitogen, but mixtures of the two restored the responsiveness to that of the original unsorted suspension. Of the B-L+ PBL, 10% were T cells, which may account for the low GVH reactivity given by this population. 相似文献
12.
Breidt FJ Davis RA Lii KS Rosenblatt M 《Proceedings of the National Academy of Sciences of the United States of America》1990,87(1):179-181
The structure of non-Gaussian autoregressive schemes is described. Asymptotically efficient methods for the estimation of the coefficients of the models are described under appropriate conditions, some of which relate to smoothness and positivity of the density function f of the independent random variables generating the process. The principal interest is in nonminimum phase models. 相似文献
13.
台风伤害及其影响因素的现场流行病学研究 总被引:2,自引:0,他引:2
目的分析台风伤害的危险因素。方法采用现场流行病学调查方法,1:2配对的病例对照研究。对照组选伤害者邻居,按照同职业、同村庄、同性别和年龄±5岁配对。结果台风造成392人受伤住院治疗,50人死亡。伤害罹患率为27.3/10万,伤害致死率为11.3%,伤害死亡率3.1/10万。调查了209名受伤者和31名死亡者。发现伤害主要发生在台风来临前,其中台风来临前1~6小时之间有病例155例,占64.6%。209例伤害病例中,67.5%的病例曾得到过台风预警,但138名应答者中重视预警的只有47人,仅占34.0%。发现“台风来临时不在家中”[调整OR值(MH)=3.9 (95%CI:1.9~7.7)]、“台风来临前未得到预警”[调整OR值(MH)=3.3(95%CI:1.3~8.6)]和“虽得到预警但不重视”[调整OR值(MH)=17(95%CI:4.2~68)]是台风伤害的危险因素。结论外出、不重视预警是台风伤害的危险因素,应加强台风来临的预警宣传力度。 相似文献
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Carrier detection in hemophilia A: a cooperative international study. I. The carrier phenotype 总被引:1,自引:0,他引:1
Graham JB; Rizza CR; Chediak J; Mannucci PM; Briet E; Ljung R; Kasper CK; Essien EM; Green PP 《Blood》1986,67(6):1554-1559
Eight laboratories in six countries cooperated to clarify several issues concerning the phenotypes of heterozygous carriers of hemophilia "A." Plasma levels of factor VIII (F.VIII:C, formerly VIII:C) and von Willebrand factor (VWF:Ag, formerly VIIIR:Ag) of carriers and normal women were determined by various "in-house" methods; a single lyophilized plasma standard was used for all assays. Analysis of the collated data from 336 carriers (296 obligatory carriers and 40 sporadic carriers) and 137 normal women showed that there was no difference in the F.VIII:C levels of "paternal" carriers (women who had obtained the abnormal gene from their fathers) and "maternal" carriers. Neither was there a difference in the VWF:Ag levels of normal women and either type of carrier. Age was found to have a significant effect on both F.VIII:C and VWF:Ag, values being higher at very young and very old ages, the minima occurring in the 25- to 30-year range. ABO blood type had a striking effect. Women of types A, B, and AB (designated non- O in the study), both normals and carriers, had significantly higher levels of both factors than did women of type O. Analysis by laboratories showed that differences in mean levels of both factors between laboratories were highly significant. It was concluded that age, ABO blood type, and laboratory variation should be taken into account in carrier detection. 相似文献
17.
Insulin receptors on leukemia and lymphoma cells 总被引:1,自引:0,他引:1
Tumor cells obtained from leukemia and lymphoma patients were investigated for specific insulin receptors. Using radioactive 125I- labeled insulin, specific insulin binding sites were demonstrated on most acute lymphocytic leukemia (ALL) and acute myelocytic leukemia (AML) cells, including acute promyelocytic leukemia (APL), chronic myelocytic leukemia (CML), and acute monocytic leukemia (AMoL) cells. Insulin receptors were not found on chronic lymphocytic leukemia (CLL) and malignant lymphoma (ML) cells. Specific insulin binding sites were also found on monocytes and thymocytes after treatment with phytohemagglutinin (PHA-P), but not on inactivated tonsil cells, peripheral blood lymphocytes, or thymocytes. There was no inverse correlation between the content of insulin receptors and the basal level of circulating insulin. These data suggest that the insulin receptor may be a new marker of acute leukemia and chronic myelocytic leukemia. 相似文献
18.
Kuan‐Ho Lin Shibu Marthandam Asokan Wei‐Wen Kuo You‐Liang Hsieh Chong‐Kuei Lii Vijayapadma Viswanadha Yi‐Lin Lin Shulin Wang Caixian Yang Chih‐Yang Huang 《Environmental toxicology》2020,35(6):707-713
Excessive intake of high fat diet (HFD) and associated obese conditions are critical contributors of cardiac diseases. In this study, an active metabolite andrographolide from Andrographis paniculata was found to ameliorate HFD‐induced cardiac apoptosis. C57/BL6 mouse were grouped as control (n = 9), obese (n = 8), low dose (25 mg/kg/d) andrographolide treatment (n = 9), and high dose (50 mg/kg/d) andrographolide treatment (n = 9). The control group was provided with standard laboratory chow and the other groups were fed with HFD. Andrographolide was administered through oral gavage for 1 week. Histopathological analysis showed increase in apoptotic nuclei and considerable cardiac‐damages in the obese group signifying cardiac remodeling effects. Further, Western blot results showed increase in pro‐apoptotic proteins and decrease in the proteins of IGF‐1R‐survival signaling. However, feeding of andrographolide significantly reduced the cardiac effects of HFD. The results strongly suggest that andrographolide supplementation can be used for prevention and treatment of cardiovascular disease in obese patients. 相似文献
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目的比较儿科煮散剂与饮片汤剂对小儿肺炎喘嗽的临床疗效和经济成本分析,探讨中药煮散剂的成本优势。方法对2010年10月至2013年3月广东省中西医结合医院儿科病房收治的300例肺炎喘嗽患儿按风寒闭肺、风热闭肺、痰热闭肺3种证型随机分配到煮散剂组和饮片组,比较3种证型各自方剂不同剂型口服给药对患儿临床症状、体征的影响,观察煮散剂与饮片的疗效差异,探讨煮散剂口服给药的安全性。同时,对煮散剂与饮片进行临床经济成本对比评价。结果煮散剂组在小儿肺炎喘嗽3种证型中的临床疗效与饮片汤剂组比较差异无统计意义(P〉0.05),但煮散剂组在中药经济成本上明显少于饮片组。结论通过对小儿肺炎喘嗽3种证型的临床观察及对比,煮散剂在有效性、安全性方面与饮片剂型无明显差异,但在经济成本土明显优于饮片汤剂型。 相似文献