4251
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Wang W. [A study of clinical safety of lithium levels in the serum and erythrocytes]. ZHONGHUA SHEN JING JING SHEN KE ZA ZHI = CHINESE JOURNAL OF NEUROLOGY AND PSYCHIATRY 1990; 23:17-8, 61. [PMID: 2347275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A correlative and regression analysis of the serum and erythrocyte lithium level (SLL and ELL) were investigated on 135 times in 31 patients with lithium therapy. It was found that the levels of both were positively-correlated with statistical significance (r = 0.8174). The levels of both and their ratio in relation to clinical manifestation were studied. It was showed that while ELL exceeded 1 mEq/L, SLL exceeded 1.2 mEq/L and the ratio between ELL and SLL exceeded 0.8: 1, symptoms of lithium intoxication occurred in 4 or 5 cases. It is suggested that lithium intoxication may possibly occur when SLL and ELL as well as their ratio reaches the above-mentioned criterion.
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4252
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Wang W. Characterization of phytotoxicity of metal engraving effluent samples. ENVIRONMENTAL MONITORING AND ASSESSMENT 1990; 14:59-69. [PMID: 24243257 DOI: 10.1007/bf00394357] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Two effluent samples were collected from an acid bath of a metal engraving industry. Sample A was lime-treated to pH 6 and sample B, pH 9. Zn concentrations in samples A and B were 1207 and 4.24 mg L(-1), respectively. Both samples A and B caused 100% inhibition on millet seed germination. Sample A was more toxic than B. The 60% concentration of sample A caused 96% inhibition, whereas the 60% concentration of sample B caused 60% inhibition. The toxicity of sample B was not likely due to the presence of cyanide and zinc ions. The results of using various adsorbents and resins for the effluent treatment showed that only powdered activated carbon was partially effective in toxicity removal. By a combination of treatment methods, including using sodium hydroxide precipitation and carbon column adsorption, toxicity removal was calculated to be 29%.
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4253
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Wang W, Williams JM. The use of phytotoxicity tests (common duckweed, cabbage, and millet) for determining effluent toxicity. ENVIRONMENTAL MONITORING AND ASSESSMENT 1990; 14:45-58. [PMID: 24243256 DOI: 10.1007/bf00394356] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The objective of this study was to use higher plants for detecting effluent toxicity. Eight effluent samples were obtained from three industrial sources prior to their entry into a sewer system. The tests were the duckweed reproduction test, and root growth tests using cabbage and millet. The results of repeated phytotoxicity tests were reproducible. Of the three industrial sources, the effluent samples from a specialty chemical industry were the most toxic. For two samples from this source, the IC50 values (the concentrations which caused 50% inhibitory effect) for duckweed were less than 1.6% effluent concentration. The samples from an agricultural product utilization plant were the least toxic. For these samples, root growth tests failed to obtain IC50 values while the duckweed tests showed IC50 values of 91 and 43% effluent concentration. Among the three types of tests conducted, the duckweed reproduction test showed the greatest sensitivity to effluent toxicity, while root growth tests using cabbage and millet had mixed results. Duckweed is recommended as a part of a battery of tests for effluent toxicity.
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4254
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Oberleithner H, Gassner B, Dietl P, Wang W. Amphibian nephron: isolated kidney and cell fusion. Methods Enzymol 1990; 192:710-33. [PMID: 2074815 DOI: 10.1016/0076-6879(90)92104-l] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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4255
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Wang W. [Effects of nimodipine on blood pressure and cardiac function in hypertensive patients]. ZHONGHUA XIN XUE GUAN BING ZA ZHI 1989; 17:341-3. [PMID: 2637128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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4256
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Yin T, Liu D, Li L, Wang W, Yan H, Jin Y, Xu Q, Fu A, Bai J, Dai J. [Studies of the relationship between the nutritional status of lactating mothers and milk composition as well as the milk intake and growth of their infants in Beijing. Pt. 5. Essential inorganic elements and vitamins in human milk]. [YING YANG XUE BAO] ACTA NUTRIMENTA SINICA 1989; 11:233-9. [PMID: 12283957] [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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4257
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Brinton LA, Wu BZ, Wang W, Ershow AG, Song HZ, Li JY, Bracken MB, Blot WJ. Gestational trophoblastic disease: a case-control study from the People's Republic of China. Am J Obstet Gynecol 1989; 161:121-7. [PMID: 2546427 DOI: 10.1016/0002-9378(89)90248-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A case-control study involving 331 patients with complete hydatidiform mole and 662 community controls matched to the cases on age and timing of pregnancy was conducted in Beijing, China. A history of a term birth was associated with reduced risk (odds ratio = 0.6, 95% confidence interval 0.4 to 0.9), with some evidence of further decrease with multiple births. Previous spontaneous abortions were not related to risk, although those with a prior induced abortion were at elevated risk, particularly if two or more abortions were involved (odds ratio = 2.8, 95% confidence interval 1.4 to 5.7). A history of having sought medical advice for infertility was associated with reduced risk (odds ratio = 0.5, 95% confidence interval 0.2 to 0.8), but those who reported use of herbal medicines during a first trimester of a previous pregnancy were at excess risk (odds ratio = 2.2, 95% confidence interval 1.3 to 3.6). In addition, a statistically significant trend in risk was observed with years of oral contraceptive use (odds ratio = 2.6, 95% confidence interval 0.9 to 6.9 for greater than or equal to 4 years of use). Dietary habits and family histories of cancer or trophoblastic disease were not related to risk in this study.
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4258
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Ouyang Y, Wang W, Bhuta S, Chang YH. Mechanism of action of colchicine. VI: Effect of colchicine on generation of leukotriene B4 by human polymorphonuclear leukocytes. Clin Exp Rheumatol 1989; 7:397-402. [PMID: 2574088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Three microtubule-disruptive agents (colchicine, oncodazole, and vinblastine) are shown to suppress ionophore A23187-induced generation of LTB4 in a dose-related manner. The slopes of the dose-response regression lines were similar for the three drugs. Trimethyl-colchicinic acid has no effect on LTB4 generation. The suppressive effect of colchicine (1 x 10(-6) M) can be blocked completely by taxol (1 x 10(-6) M) which promotes and stabilizes microtubule assembly. The data suggest that colchicine suppresses the generation of LTB4 via its effect on microtubules.
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4259
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Zhu YX, Liu LZ, Ling DK, Wang W. [Chemical studies on the constituents of radix Ophiopogonis]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1989; 14:359-60, 383. [PMID: 2511862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this paper four compounds isolated from Radix Ophiopogonis are described. Their structures have been identified as beta-sitosterol (I), 6-aldehydo-7-methoxy-isoophiopogonanone B (II), beta-sitosterol-beta-D-glucopyranoside (III) and 1-borneol-beta-D-apisyl-beta-D-glucopyranoside (IV) on the basis of spectral data and hydrolytic reaction.
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4260
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Tanner CM, Chen B, Wang W, Peng M, Liu Z, Liang X, Kao LC, Gilley DW, Goetz CG, Schoenberg BS. Environmental factors and Parkinson's disease: a case-control study in China. Neurology 1989; 39:660-4. [PMID: 2710356 DOI: 10.1212/wnl.39.5.660] [Citation(s) in RCA: 116] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
We studied the role of environment in the development of Parkinson's disease (PD) in China, where industrialization is relatively recent and the population geographically stable. Using a case-control method, we investigated the relationship between PD and exposure to the following factors before disease onset: place of residence, source of drinking water, environmental and occupational exposure to various agricultural and industrial processes. Occupational or residential exposure to industrial chemicals, printing plants, or quarries was associated with an increased risk of developing PD. In contrast, living in villages and exposure to the common accompaniments of village life, wheat growing and pig raising, were associated with a decreased risk for PD. PD cases and controls did not differ with respect to other factors investigated. These findings are consistent with the hypothesis that environmental exposure to certain industrial chemicals may be related to the development of PD.
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4261
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Chen ZX, Wang W, Wu WL. Heterogenous response of primary cultured bone marrow cells of patients with different varieties of leukemia to differentiation inducers. Chin Med J (Engl) 1989; 102:174-82. [PMID: 2503303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The in vitro induced differentiation of a number of human leukemia cell lines by chemical inducers not only provides a valuable model system for the study on the mechanism of hematopoietic cell proliferation and differentiation at both cellular and molecular levels, but also reveals a new prospect in the treatment of leukemia. In order to find out the possibility of applying inducing agents to the patients with various types of leukemia, the bone marrow cells in primary culture from 50 patients with leukemia were tested for their inducibility in response to the inducers. Only M3 leukemia bone marrow cells can be markedly induced by retinoic acid to the myeloid terminal cells with positive NBT reduction while the cells of other types respond with uncertainty. TPA is able to cause a macrophage-like differentiation in bone marrow cells of all types of leukemia except M1. However, the leukemic cells of chronic myelogenous leukemia in lymphocytic blast crisis will lose response to TPA. The cultured bone marrow cells of acute lymphocytic leukemia respond neither to retinoic acid nor to TPA. Homoharringtonine, a chemotherapeutic drug used in the so-called HOAP regimen for acute nonlymphocytic leukemia, seems to possess the capability of inducing HL-60, the promyelocytic leukemia cell line, to NBT positive myeloid terminal cells, although the inducing effect is weaker than retinoic acid.
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4262
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Hiraoka J, Wang W. A new infusion needle for perfusion fixation. STAIN TECHNOLOGY 1989; 64:102-3. [PMID: 2477917 DOI: 10.3109/10520298909108056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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4263
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Chang TS, Wang W, Guan WX, Jin YT, Hwang WY. The evolution of the free forearm flap. EUROPEAN JOURNAL OF PLASTIC SURGERY 1989. [DOI: 10.1007/bf02892658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4264
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Schlender KK, Wang W, Wilson SE. Evidence for a latent form of protein phosphatase 1 associated with cardiac myofibrils. Biochem Biophys Res Commun 1989; 159:72-8. [PMID: 2538129 DOI: 10.1016/0006-291x(89)92406-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Detergent-purified myofibrils from bovine heart contained very little spontaneously active protein phosphatase 1 activity. Phosphatase 1, extracted from the myofibrils by freeze-thawing in the presence of 500 mM KCl, was markedly activated by cobalt/trypsin treatment. Myofibril phosphatase 1 was separated from phosphatase 2A by chromatography on heparin-Sepharose. The phosphatase 1 was isolated in a latent form. Pretreatment with trypsin released free catalytic subunit and increased activity about 25-fold. Addition of cobalt with the trypsin increased activity another 2-fold. The latent myofibril phosphatase 1 did not appear to be the same as previously characterized forms of protein phosphatase 1. We suggest that cardiac myofibril phosphatase 1 contains a unique inhibitory subunit which directs the enzyme to the myofibril and regulates the dephosphorylation of myofibril phosphoproteins.
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4265
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Liu LS, Zhao Y, Lei YP, Wang W, Zhang XE, Jin L. Calcium antagonists in prevention of hypertension and stroke in stroke-prone spontaneously hypertensive rats. Chin Med J (Engl) 1989; 102:106-13. [PMID: 2505975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
To investigate the effect of Calcium antagonists (Ca-An) with different tissue specificity in the development of hypertension and stroke in salt-loading SHRSP, three experiments were conducted. In experiment I (1), 50 8-week-old male SHRSP were divided into three groups and given nifedipine (NF, 32 mg/kg/day), menidipine (MN 32 mg/kg/day) and placebo (control group) respectively. In the control group 83.3% (15/18) died of stroke and 17 showed renal vascular sclerosis. Their average lifespan was 84 days. NF and MN significantly reduced systolic blood pressure (SBP), and no stroke of renal vascular sclerosis developed. In experiment I (2), 54 7-week-old male SHRSP were divided into three groups (18 in each group). They were treated with nimodipine (NM) 20 mg/kg/day, 2 mg/kg/day and placebo respectively. NM (20 mg/kg/day) markedly lowered SBP and postponed the onset of stroke. Only 11% died in 17 weeks. NM (2 mg/kg/day did not lower SBP but postpond the onset of stroke. In experiment II (1), 29 10-week-old female SHRSP were divided into three groups: Group A was given NF 32 mg/kg/day, group B was parathyroidectomized (PTX) and group C served as control. PTX group did not lower SBP but could postpone the onset of stroke. In experiment II (2), 33 male SHRSP were divided into three groups and ticated as described above in experiment II (1) (11 in each group). Seven weeks after the experiment, the brain blood flow of NF group was significantly greater (67.5%) than that of the control and PTX groups. In experiment III, 27 7-week-old male SHRSP were divided into three groups as described above in experiment I (2).(ABSTRACT TRUNCATED AT 250 WORDS)
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4266
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Zopf D, Ohlson S, Dakour J, Wang W, Lundblad A. Analysis and purification of oligosaccharides by high-performance liquid affinity chromatography. Methods Enzymol 1989; 179:55-64. [PMID: 2622361 DOI: 10.1016/0076-6879(89)79113-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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4267
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Zeng YL, Wang W. CT measurement of the normal cervical and lumbar spinal canal in Chinese. Chin Med J (Engl) 1988; 101:898-900. [PMID: 3150737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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4268
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Wang M, Wang B, Zheng P, Wang W, Lin J. Structure of the extraction complex bis[(dicyclohexano-18-crown-6)oxonium] hexanitratothorate(IV) isomer A. Acta Crystallogr C 1988. [DOI: 10.1107/s0108270188008674] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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4269
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Wang JX, Yamamura HI, Wang W, Roeske WR. Irreversible inhibition by tyrosine-directed alkylating reagents of muscarinic cholinergic receptors in membranes from rat forebrain and heart. Biochem Pharmacol 1988; 37:3787-90. [PMID: 3178894 DOI: 10.1016/0006-2952(88)90418-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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4270
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Binnie NE, Haley LV, Mattioli TA, Thibodeau DL, Wang W, Koningstein JA. Molecular emission and electronic structure of associated chlorophyll a. CAN J CHEM 1988. [DOI: 10.1139/v88-279] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We report the wavelength-selective Raman and fluorescence spectra of monomeric and aggregate species of chlorophyll a in solution. The excitation profile for the molecular emission of the various chlorophyll complexes permit the construction of part of the electronic energy level diagram. For a T-shaped dimeric chlorophyll a, pseudo-exciton splittings of 667 cm−1 in the Soret and 397 cm−1 in the Qy bands are obtained.
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4271
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Liu XJ, Tao CH, Chen HX, Wang W. [Determination of cyclosporine in whole blood by reversed phase high performance liquid chromatography]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1988; 23:397-400. [PMID: 3213523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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4272
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Wang JX, Roeske WR, Wang W, Yamamura HI. Himbacine recognizes a high affinity subtype of M2 muscarinic cholinergic receptors in the rat cerebral cortex. Brain Res 1988; 446:155-8. [PMID: 3370478 DOI: 10.1016/0006-8993(88)91306-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The in vitro receptor binding properties of a muscarinic antagonist himbacine have been studied in rat cerebral cortical, cardiac and ileal membranes. Himbacine displayed high affinity (KH = 2.94 nM) for 19%, and low affinity (KL = 71.2 nM) for the remaining muscarinic receptors in rat cerebral cortex. This high affinity of himbacine agrees with its affinity for the 62% of cerebral cortical [3H]AF-DX 116 binding sites (KH = 2.30 nM). The affinity of himbacine for cardiac receptors (Ki = 9.06 nM) and ileal receptors (Ki = 12.4 nM) was the same. Therefore, himbacine appears to be a high-affinity M2-selective ligand which recognizes a subtype of M2 receptors in the cerebral cortex.
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4273
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Wang W, Wang JH, Shi TR. [Effect of Polygonum multiflorum on the life-span and lipid metabolism in senile Japanese quails]. ZHONG XI YI JIE HE ZA ZHI = CHINESE JOURNAL OF MODERN DEVELOPMENTS IN TRADITIONAL MEDICINE 1988; 8:223-4, 198. [PMID: 3191547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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4274
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Abstract
The clinical features of a 5-year-old patient with osteopetrosis and severe obstructive sleep apnea are presented. The patient responded to tonsillectomy, adenoidectomy, uvulectomy, and tracheostomy. The tracheostomy was later removed. Osteopetrosis, while rare, may be added to the list of causes of obstructive sleep apnea.
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4275
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Fu YF, Zhang SL, Lu ZM, Wang W. Effects of gossypol on the activity of kidney (Na+ + K+)-ATPase and the functions of erythrocyte membrane. Contraception 1988; 37:179-84. [PMID: 2836126 DOI: 10.1016/0010-7824(88)90128-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Gossypol extracted from cottonseed oil, reputed to exert contraceptive action in males, may induce a side effect of hypokalemia. The cellular and molecular mechanisms by which gossypol produces hypokalemia are not quite understood. We have examined the inhibitory effect of gossypol on the activity of (Na+ + K+)-ATPase purified from the outer medulla of rabbit kidney, the half maximal inhibitory concentration (IC50) is 6.5 micron. The kinetic studies using this enzyme preparation show that gossypol is noncompetitive with ATP, Mg2+, Na+ and K+ with apparent Ki of 15.0, 13.0, 14.0 and 4.4 micron, respectively. On the other hand, in order to estimate the effects of gossypol on membrane transport of intact cells, we have investigated the effects of gossypol on the activity of (Na+ + K+)-ATPase, membrane integrity and permeability of human erythrocytes. It shows that gossypol inhibited the enzyme activity (greater than 5 micron) and expressed the hemolysis (greater than 50 micron) in vitro in a concentration-dependent manner, and increased the K+-efflux of the cells (10-40 micron). The above effects are antagonized by 1-2% bovine serum albumin. The data demonstrate that gossypol is a specific and potent membrane active agent. These results may be relevant to the in vivo actions of gossypol.
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