4676
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Zhang Z. 5-[(p-Methyl-phenyl)azo]-8-aminoquinoline as a new reagent for trace determination of nickel by adsorptive cathodic stripping voltammetry. Talanta 1991; 38:1487-91. [DOI: 10.1016/0039-9140(91)80300-o] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/1991] [Revised: 03/11/1991] [Accepted: 03/29/1991] [Indexed: 10/17/2022]
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4677
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Zhang Z, Ferenczi MA, Lush AC, Thomas CR. A novel micromanipulation technique for measuring the bursting strength of single mammalian cells. Appl Microbiol Biotechnol 1991; 36:208-10. [PMID: 1368109 DOI: 10.1007/bf00164421] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Information about the bursting strength of animal cells is essential if the mechanisms of cell damage in bioreactors are to be understood, and if cell mechanical properties are ever to be related to cell structure and physiology. We have developed a novel cell compression technique that makes it possible to directly measure the bursting strength of single mammalian cells, and to infer information about cell mechanical properties.
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4678
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Rinaldo C, Huang XL, Piazza P, Armstrong J, Rappocciolo G, Pazin G, McMahon D, Gupta P, Fan Z, Zhang Z. Augmentation of cellular immune function during the early phase of zidovudine treatment of AIDS patients. J Infect Dis 1991; 164:638-45. [PMID: 1680135 DOI: 10.1093/infdis/164.4.638] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Twenty-five patients with AIDS in AIDS Clinical Trials Group Protocol 002 were treated with either low or high dosages of zidovudine. This resulted in moderate, transient increases by 10 and 20 weeks in lymphocyte blastogenesis and interferon-gamma (IFN-gamma) production in vitro in response to phytohemagglutinin with and without recombinant interleukin-2. Immune responses to cytomegalovirus and herpes simplex virus type 1 antigens were augmented less frequently during therapy. Natural killer (NK) cell lysis of uninfected and human immunodeficiency virus-infected cells was also transiently increased by 10 and 20 weeks. IFN-gamma production, the only immune parameter directly associated with increases in numbers of CD4+ T cells, peaked at 10 weeks of treatment. The limited efficacy of zidovudine treatment in AIDS patients is associated with moderate, temporary increases in nonspecific and herpesvirus-specific T lymphocyte responses and NK cell function.
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4679
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Wollgarten M, Gratias D, Zhang Z, Urban K. On the determination of the Burgers vector of quasicrystal dislocations by transmission electron microscopy. ACTA ACUST UNITED AC 1991. [DOI: 10.1080/01418619108213951] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4680
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Li Z, Ren H, Zhang Z, Sun C, Xu L, Yu H, Li L, Zhou J, Yan H, Liu H. Treatment of small cell lung cancer. CHINESE MEDICAL SCIENCES JOURNAL = CHUNG-KUO I HSUEH K'O HSUEH TSA CHIH 1991; 6:160-2. [PMID: 1665363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
During a 28-year period, 110 patients with small cell lung cancer were treated at our hospital. Fifty-nine patients received surgery, and 58 patients (including 7 cases after exploratory thoracotomy) received chemotherapy and/or radiotherapy. The 5-year survival rate of the surgically treated group was 17%, while none in the non-surgical group survived for more than 5 years.
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4681
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Jungmann K, Baird PEG, Barr JRM, Bressler C, Curley PF, Dixson R, Eaton GH, Ferguson AI, Geerds H, Hughes VW, Kenntner J, Lea SN, Maas F, Persaud MA, zu Putlitz G, Sandars PGH, Schwarz W, Toner WT, Towrie M, Woodman G, Zhang L, Zhang Z. Two-photon laser spectroscopy of the muonium 1S?2S transition. ACTA ACUST UNITED AC 1991. [DOI: 10.1007/bf01426380] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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4682
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Zhang S, Xu S, Li G, Su Z, Liu W, Xie Q, Zhang J, Zhang Z, Qian Y, Shen J. [Clinical value of the Chengdu classification of non-Hodgkin's lymphomas]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1991; 22:307-10. [PMID: 1748417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Two hundred forty-nine cases of non-Hodgkin's lymphomas (NHL) were reviewed by using the working classification of NHL (Chengdu, 1985). The results showed that the patients of 249 cases of NHL ranging in age from 5 to 76 years, with the mean age of 42 of the types were separated into three major prognostic groupings as follows: 1. low (41 of 249 cases, small lymphocytic 27 cases, lymphoplasmacytoid 2 cases, follicular cleaved 7 cases, follicular cleaved and noncleaved 5 cases); 2. intermediate (58 of 249 cases, diffuse cleaved 28 cases, diffuse cleaved and noncleaved 27 cases, follicular noncleaved 3 cases); and 3. high grade malignancy (150 of 249 cases, diffuse noncleaved 49 cases, lymphoblastic 41 cases, immunoblastic 13 cases, polymorphic 39 cases, clear cell 2 cases, histiocytic 6 cases). Each group was significantly different from the others (P less than 0.05). The prognosis of patients with angioimmunoblastic lymphadenopathy like T-cell lymphoma (9 of 249 cases) was not more significant (P greater than 0.05) than that of patients with other polymorphic lymphoma (30 of 249 cases). The results showed this Chengdu classification of NHL is good for practice and usage in clinical evaluation and routine surgical pathology.
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4683
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Jeng SP, Zhang Z, Henrich VE. O2 chemisorption on CoO(100): A resonant-photoemission study. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:3266-3271. [PMID: 9999925 DOI: 10.1103/physrevb.44.3266] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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4684
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Zhang Z, Davis DL. Prostaglandin E and E2 alpha secretion by glandular and stromal cells of the pig endometrium in vitro: effects of estradiol-17 beta, progesterone, and day of pregnancy. PROSTAGLANDINS 1991; 42:151-62. [PMID: 1775637 DOI: 10.1016/0090-6980(91)90074-p] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Prostaglandins (PGs) are believed to play important roles in the establishment of pregnancy. Glandular and stromal cells were isolated from pig endometrium on days 11 through 19 of pregnancy and cultured in the presence of estradiol-17 beta (E2) and progesterone (P4) to determine the effect of day of pregnancy and steroids on the secretion of PGE and PGF2 alpha. Estradiol at concentrations between .01 and 1 microM did not affect PGE and PGF2 alpha secretion into the medium by glandular and stromal cells. Progesterone (.1 microM) suppressed (P less than .001) PGE and PGF2 alpha production from both cell types. Glandular cells secreted more (P less than .01) PGF2 alpha than PGE, whereas stromal cells collected on days 11, 12, 13, and 19 secreted more (P less than .05) PGE than PGF2 alpha. Stromal cells isolated from tissues collected on day 13 of pregnancy produced PGs with higher (P less than .01) PGE:PGF2 alpha ratio than those from tissues harvested on other days of pregnancy. Glandular cells isolated from tissues collected on days 13 and 19 and stromal cells isolated from tissue collected on day 13 of pregnancy secreted more (P less than .05) PGE and PGF2 alpha than cells isolated on other days of pregnancy. We conclude that: 1) P4 has a suppressing effect on PG secretion; 2) endometrial glandular and stromal cells each produce a unique profile of PGs; and 3) endometrial cells harvested on different days of pregnancy secrete different amounts of PGE and PGF2 alpha.
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4685
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Zhang Z, Webb G, Lyster D, Orvig C. Gallium-67 complexes for myocardial imaging. J Inorg Biochem 1991. [DOI: 10.1016/0162-0134(91)84606-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4686
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Zhang Z, Sun X, Chen X. [Effect of drug processing on shaoyao gancao decoction]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1991; 16:407-9, 447. [PMID: 1910504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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4687
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Zhang Z, Paria BC, Davis DL. Pig endometrial cells in primary culture: morphology, secretion of prostaglandins and proteins, and effects of pregnancy. J Anim Sci 1991; 69:3005-15. [PMID: 1885410 DOI: 10.2527/1991.6973005x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Luminal epithelial, glandular epithelial, and stromal cells were isolated from pig endometrium by enzymatic dispersion and sieve filtration. The three cell types, maintained in primary culture, showed distinctly different morphologies when viewed by light and scanning electron microscopy. Immunocytochemical staining indicated that luminal and glandular epithelial cells were positive for both cytokeratin and vimentin. However, stromal cells were positive only for vimentin. Acid phosphatase activity was detected in the culture medium of glandular cells and increased (P less than .05) when progesterone (.1 microM) was included in the culture medium. The secretion of uteroferrin by glandular cells was also indicated by one-dimensional PAGE and Western blot analysis. Stromal cells produced more (P less than .01) prostaglandin E (PGE) than prostaglandin F2 alpha (PGF2 alpha), whereas glandular cells secreted more (P less than .01) PGF2 alpha than PGE. Pregnancy status affected prostaglandin secretion in that stromal cells secreted less (P less than .01) PGE and PGF2 alpha and glandular cells secreted less (P less than .05) PGF2 alpha when they were harvested from pregnant vs cyclic pigs. Furthermore, the PGE:PGF2 alpha ratio in medium from stromal cells was greater (P less than .01) for cells collected from pregnant pigs. This culture system provides an in vitro model for studying the hormonal regulation of the endometrium and potentially may be useful for studying interactions between endometrial cells and embryos in the pig.
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4688
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Zhang Z. [Geographic distribution of Lyme disease in Mudanjiang]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 1991; 12:154-7. [PMID: 1863948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Four forestry plant in Mudanjiang with different geographic characteristics were investigated in 1989. 2178 people were inquired and examined. 74 cases including 54 of ECM, 12 of nervous system disorder and 8 of arthritis were confirmed as Lyme disease. There were some patients at other places of forest areas of Mudanjiang. The prevalence rate of Lyme disease ranged from 1% to 4.5% at four plants with higher rate in mountainous area than in hilly land. It is first report that one strain of Lyme disease spirochetes was isolated from a patient with psychiatric derangement. It proved that Ixodes persulcatus play the leading role in transmission of Lyme disease spirochetes, as the growth curve of Ixodes persul catus is coincident with that of the patient with ECM.
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4689
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Lang X, Li M, Jia B, Wu S, Li L, Zhao S, Shi X, Zhang Z. [Experimental research of the effect of polysaccharides in semen Ziziphis Spinosae and Ziziphis Spinosae on enhancing the immune function of mice injured by radiation]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1991; 16:366-8, 384. [PMID: 1786101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This article surveys the pharmacological effect of the polysaccharides in Semen Ziziphis Spinosae and Ziziphis Spinosae. The result shows that oral administration of this polysaccharide (0.1g/kg/d) can strengthen the immune function of cells nd body fluids and to a certain extent protect mice from radioactive injuries.
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4690
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Pan H, Ji Z, Liu E, Zhang Z. Erythrocyte vesiculation in paroxysmal nocturnal hemoglobinuria. CHINESE MEDICAL SCIENCES JOURNAL = CHUNG-KUO I HSUEH K'O HSUEH TSA CHIH 1991; 6:84-6. [PMID: 1725134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Red blood cells from patients with paroxysmal nocturnal hemoglobinuria (PNH) were found to be liable to vesiculate, as demonstrated by both DMPC liposome- and CaCl2-induced vesiculation and measured in terms of acetylcholinesterase activity and 3H-inositol radioactivity in the supernatant. Membrane proteins released from the cells during vesiculation included several constituents with molecular weights identical to those of some complement regulating factors (e.g. DAF) which play an essential role in complement-mediated hemolysis. Red blood cells from both normal and PNH patients showed decreased deformability after vesiculation. Liability to vesiculate and the consequential loss of certain essential membrane proteins and decreased deformability might be a factor contributing to the mechanism of hemolysis in PNH.
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4691
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Zhang Z, Jeng SP, Henrich VE. Cation-ligand hybridization for stoichiometric and reduced TiO2 (110) surfaces determined by resonant photoemission. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:12004-12011. [PMID: 9996977 DOI: 10.1103/physrevb.43.12004] [Citation(s) in RCA: 128] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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4692
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Stern EA, Livns P, Zhang Z. Thermal vibration and melting from a local perspective. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:8850-8860. [PMID: 9996553 DOI: 10.1103/physrevb.43.8850] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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4693
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Wu XL, Wang YL, Zhang Z, Lieber CM. Electronic and structural effects of oxygen doping in Bi2Sr2CaCu2Ox superconductors characterized by tunneling microscopy. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:8729-8732. [PMID: 9996532 DOI: 10.1103/physrevb.43.8729] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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4694
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Pan H, Lin F, Qiu J, Huang F, Chiu T, Zhang Z. Antioxidant action of certain simple phenolic compounds derived from Chinese herbs. CHINESE MEDICAL SCIENCES JOURNAL = CHUNG-KUO I HSUEH K'O HSUEH TSA CHIH 1991; 6:52-5. [PMID: 1786406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
H2O2 and hydroxyl free radical active oxygen generation systems were utilized to define the antioxidant activities of simple phenolic compounds derived from Chinese herbs. Although the antioxidant activities of compounds differed when assessed in the two systems, all compounds tested were found to be effective at preventing red blood cell membrane lipid peroxidation, with the propyl and butyl esters of gallic acid being especially potent. No compound was able to prevent hemoglobin oxidation. All compounds but salicylic acid were found to interact dose-dependently with H2O2 and hydroxyl free radical as determined by a chemiluminescence method.
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4695
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Ge L, Wang F, Zhang Z, Ma Y. [Determination of cholic acid in man-made bezoar by derivative spectrometry]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1991; 16:166-7, 191. [PMID: 1883500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Cholic acid in man-made bezoar can be determined by the suggested first order derivative spectrometric method. The peak amplitude within 310-290 nm is independent of the other components and only varies linearly with cholic acid concentration. The method is simple and accurate with good reproducibility.
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4696
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Zhang Z, Liu X, Ma I. [A nonisotopic enzymolysis assay method of phosphatidylinositol kinase]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1991; 22:70-3. [PMID: 1663483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A nonisotopic enzymolysis assay method of phosphatidylinositol kinase (PIK) has been developed. Phosphatidylinositol 4-phosphate (PIP), phosphorylated from phosphatidylinositol (PI) by PIK was hydrolyzed with phosphainositide-specific phospholipase C. The product, inositol 1, 4-bisphosphate (IP2), was separated from inositol 1-phosphate (IP) with Dowex-1 column chromatography. Then, the IP2 was hydrolyzed by alkaline phosphatase to yield PI, and the PI was determined by colorimetry. The PIK activity was defined as PI nmol/mg protein per min. The recovery was 91%, CV = 6.5%
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4697
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4698
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Satpathy S, Zhang Z, Salehpour MR. Satpathy, Zhang, and Salehpour reply. PHYSICAL REVIEW LETTERS 1991; 66:394. [PMID: 10043795 DOI: 10.1103/physrevlett.66.394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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4699
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Chen B, Zhang Z, Yuan H. The feasibility of population migration from arid mountainous areas of Central Gansu to the oasis west of the Yellow River in the province. CHINESE JOURNAL OF POPULATION SCIENCE 1991; 3:145-56. [PMID: 12317652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
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4700
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Thomson JR, Cowan WM, Elder KR, Daviet P, Soga G, Zhang Z, Grant M, Zuckermann MJ. Neural networks with constrained inputs as models for pattern formation in primate visual cortex. J Biol Phys 1991. [DOI: 10.1007/bf00417810] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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