6551
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Wang H, Gu TH, Pan WH. [Hypotensive responses of different types of Goldblatt hypertensive rat to MK-421]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1986; 21:469-71. [PMID: 3028039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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6552
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Kwak JF, Schirber JE, Chaikin PM, Williams JM, Wang H, Chiang LY. Spin-density-wave transitions in a magnetic field. PHYSICAL REVIEW LETTERS 1986; 56:972-975. [PMID: 10033334 DOI: 10.1103/physrevlett.56.972] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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6553
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Schnitt SJ, Wang H, Dvorak AM. Morphologic changes in primary neuroendocrine carcinoma of the skin following radiation therapy. Hum Pathol 1986; 17:198-201. [PMID: 3949339 DOI: 10.1016/s0046-8177(86)80295-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A case of primary neuroendocrine carcinoma of the skin (NECS) treated by radiation therapy is reported. Biopsy prior to irradiation showed a tumor with the characteristic light microscopic, immunohistochemical, and ultrastructural features of NECS. Following external beam irradiation, 6,000 rad, the size of the lesion decreased markedly. Examination of the excised residual mass revealed dense fibrous connective tissue with entrapped nests of large tumor cells that differed markedly from those in the previous biopsy specimen. The neoplastic cells in the excised mass had abundant, vacuolated, eosinophilic cytoplasm and pleomorphic nuclei. In spite of these marked morphologic alterations, the original immunohistochemical phenotype was retained. These observations suggest that radiation may induce profound histologic changes in NECS.
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6554
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Ellis WR, Wang H, Blair DF, Gray HB, Chan SI. Spectroelectrochemical study of the cytochrome a site in carbon monoxide inhibited cytochrome c oxidase. Biochemistry 1986; 25:161-7. [PMID: 3006749 DOI: 10.1021/bi00349a023] [Citation(s) in RCA: 73] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The reduction potential of the cytochrome a site in the carbon monoxide derivative of beef heart cytochrome c oxidase has been studied under a variety of conditions by thin-layer spectroelectrochemistry. The reduction potential exhibits no ionic strength dependence and only a 9 mV/pH unit dependence between pH 6.5 and 8.5. The weak pH dependence indicates that protonation of the protein is not stoichiometrically linked to oxidoreduction over the pH range examined. The temperature dependence of the reduction potential implies a relatively large standard entropy of reduction of cytochrome a. The measured thermodynamic parameters for reduction of cyctochrome a are (all relative to the normal hydrogen electrode) delta Go'(25 degrees C) = -6.37 kcal mol-1, delta Ho' = -21.5 kcal mol-1, and delta So' = -50.8 eu. When cytochrome c is bound to the oxidase, the reduction potential of cytochrome a and its temperature dependence are not measurably affected. Under all conditions studied, the cytochrome a site did not exhibit simple Nernstian n = 1 behavior. The titration behavior of the site is consistent with a moderately strong anticooperative interaction between cytochrome a and CuA [Wang, H., Blair, D. F., Ellis, W. R., Jr., Gray, H. B., & Chan, S. I. (1985) Biochemistry (following paper in this issue)].
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6555
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Wang H, Blair DF, Ellis WR, Gray HB, Chan SI. Temperature dependence of the reduction potential of CuA in carbon monoxide inhibited cytochrome c oxidase. Biochemistry 1986; 25:167-71. [PMID: 3006750 DOI: 10.1021/bi00349a024] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The temperature dependence of the reduction potential of the CuA site in carbon monoxide inhibited cytochrome c oxidase has been measured with a spectroelectrochemical method adapted to the relatively weak near-infrared absorption of this copper ion. These measurements, together with parallel measurements on the 604-nm absorption due to Fea, indicate that an interaction between CuA and Fea causes the reduction potential for one of these sites to be decreased by approximately 40 mV upon reduction of the other. The temperature dependence of the CuA reduction potential indicates a relatively large and negative standard entropy of reduction of CuA (delta So' = -48.7 +/- 2.3 eu). Possible implications of the intersite redox interaction and the large standard entropy of reduction of the CuA site are discussed.
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6556
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Goldberg AL, Rosenbaum AE, Wang H, Kim WS, Lewis VL, Hanley DF. Computed tomography of dural sinus thrombosis. J Comput Assist Tomogr 1986; 10:16-20. [PMID: 3944306 DOI: 10.1097/00004728-198601000-00003] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The four patients presented here demonstrate the value of contrast enhanced CT in the diagnosis and serial evaluation of dural sinus thrombosis. Two patients were young women using oral contraceptives; another patient had lateral sinus thrombosis complicating mastoiditis; a fourth patient developed superior sagittal sinus thrombosis following hip surgery. Improvements in CT diagnosis, including the use of thin sections for evaluation of the deep venous structures and lateral sinuses complemented by multiplanar reconstruction or direct coronal scanning, are discussed. Sequential scans for following the progress of two patients treated by barbiturate coma added to the understanding of dural sinus occlusive disease.
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6557
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Wang H, Gu R, Liu KM. Studies on muntiacus muntjak cells infected with poliovirus. Chin Med J (Engl) 1986; 99:32-8. [PMID: 3015504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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6558
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Wang H, Ding MX, Zhai ZH. [Dynamics of DNA synthesis in IBRV (infectious bovine rhinotracheitis virus) infected cells and the morphogenesis of the viruses]. WEI SHENG WU XUE BAO = ACTA MICROBIOLOGICA SINICA 1985; 25:306-12. [PMID: 3017010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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6559
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Zinreich SJ, Wang H, Updike ML, Kumar AJ, Ahn HS, North RB, Rosenbaum AE. CT myelography for outpatients. An inpatient/outpatient pilot study to assess methodology. Radiology 1985; 157:387-90. [PMID: 4048445 DOI: 10.1148/radiology.157.2.4048445] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The diagnostic usefulness, limitations, and adverse reactions associated with computed tomographic myelography using metrizamide were assessed for broad outpatient application. The initial approach was to examine inpatients (n = 38) with low-dose metrizamide (100 mgI/ml). This low dose was believed less likely to be associated with side effects. They were then treated as if they were outpatients, with the liberties this entailed. The consequences of needle puncture were minimized by using a 25-gauge disposable needle. Thirty-four (89%) patients remained free of side effects after the procedure. Subsequently, this technique was extended to 42 outpatients, 38 (90.5%) of whom remained asymptomatic. For comparison, 170 mgI/ml was used in another 25 outpatients, who evidenced more symptoms. The potential medical, economic, and therapeutic benefits of obviating hospitalization by safer outpatient CT myelography seem clear.
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6560
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Weissman DE, Gilbert M, Wang H, Grossman SA. The use of computed tomography of the spine to identify patients at high risk for epidural metastases. J Clin Oncol 1985; 3:1541-4. [PMID: 4056845 DOI: 10.1200/jco.1985.3.11.1541] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The usefulness of spinal computed tomography (CT) in predicting the presence of epidural tumor was evaluated in cancer patients undergoing CT myelography for suspected epidural tumor. Two hundred ninety two vertebral levels were evaluated in 30 patients. Spinal CT demonstrated cortical disruption surrounding the epidural space from metastatic cancer in 109 vertebrae. Eighty-five (78%) of these vertebral levels had tumor extension into the adjacent epidural space. The incidence of epidural tumor adjacent to vertebrae which had normal spinal CT or metastatic tumor without cortical disruption was 11%. Eighty-six percent of the epidural tumor adjacent to these vertebrae were a result of craniocaudal tumor extension in the epidural space from adjacent vertebral levels with cortical disruption. Twenty-one of 23 patients (91%) with cortical disruption at more than one vertebral level on spinal CT had epidural tumor. Synchronous noncontiguous epidural lesions were observed in 38% of patients with epidural tumor. Spinal CT is an important diagnostic test in determining which patients are at high risk for epidural tumor. Myelography should be performed in all patients with suspected epidural tumor to accurately define the full extent of tumor.
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6561
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Gao J, Xue KX, Li BG, Dong HY, Wang H, Lai BT, Zhen XP. [Histological and ultrastructural observations on the process of invasion by the cell line of human lung adenocarcinoma (LTEP-alpha-2) in vitro]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1985; 7:393-5. [PMID: 2938764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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6562
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Toung TJ, Grayson R, Saklad J, Wang H. Movement of the distal end of the endotracheal tube during flexion and extension of the neck. Anesth Analg 1985; 64:1030-2. [PMID: 4037385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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6563
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Wang H, Kaveh M. Coherent signal-subspace processing for the detection and estimation of angles of arrival of multiple wide-band sources. ACTA ACUST UNITED AC 1985. [DOI: 10.1109/tassp.1985.1164667] [Citation(s) in RCA: 741] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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6564
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Wang H, Chi ZS. [Clinical analysis of vascular complications in patients with insulin-dependent diabetes]. ZHONGHUA YI XUE ZA ZHI 1985; 65:457-60. [PMID: 3931872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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6565
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Shigematsu T, Wang H, Nagano M, Maki H. Evaluation of anesthetic management for the surgery of the aortic aneurysm. Keio J Med 1985; 34:105-13. [PMID: 4046275 DOI: 10.2302/kjm.34.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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6566
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Chen DL, Chen TL, Xu GR, Chen YL, Peng L, Wang H. A study of dynamic development in radiolesion and cell death of eukaryotes after exposure to ionizing radiation--the visualization of the dynamic reaction by means of cytochemical method with lactate dehydrogenase (LDH) as a nuclear marker and radiation-induced nuclear anomalization by an ultramicrostructural manifestation: a dynamic explanation. SCIENTIA SINICA. SERIES B, CHEMICAL, BIOLOGICAL, AGRICULTURAL, MEDICAL & EARTH SCIENCES 1985; 28:584-98. [PMID: 4023692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The present work deals with the radiation effect on adult rats suffering from acute, whole-body irradiation with cobalt-60 gamma rays of dosages 100R and 300R respectively. The morphological alteration of the lymphocytic nucleus and exhibition of cytochemical reaction of LDH in intra- or extra-nuclear region has been observed at the end of predetermined time intervals after irradiation. A close relationship between the percentage of damage of the lymphocytic nucleus and that of positivity of LDH reaction is seen from their variations with time parallel. From technical color microphotographs which exhibit cytochemical reactions, the existence of enzyme LDH in the nucleus so far obscure has been visually recognized. The events happening in enzymic reaction and the leakage of enzyme across the nuclear envelope reflect the dynamic nature. The ultrastructural alteration of nuclear anomalization confirms the dynamic development of inducing radiolesion. The experimental facts inspire us to attempt an explanation of cellular radiolesion and cell death owing to ionization radiation in light of the dynamic concept.
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6567
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6568
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McPherson RW, Toung TJ, Johnson RM, Rosenbaum AE, Wang H. Intracranial subdural gas: a cause of false-positive change of intraoperative somatosensory evoked potential. Anesthesiology 1985; 62:816-9. [PMID: 4003810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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6569
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Zhang XY, He SG, Wang H. [Clinical analysis of 11 cases of hypophosphatemia complicating total parenteral nutrition]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 1985; 23:196-8, 252. [PMID: 3926419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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6570
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Matsumori A, Wang H, Abelmann WH, Crumpacker CS. Treatment of viral myocarditis with ribavirin in an animal preparation. Circulation 1985; 71:834-9. [PMID: 2982522 DOI: 10.1161/01.cir.71.4.834] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The therapeutic effects of ribavirin, a broad-spectrum, antiviral agent, on experimental myocarditis caused by encephalomyocarditis (EMC) virus were investigated. Four-week-old DBA/2 mice were inoculated with 10 plaque-forming units (pfu) of EMC virus. Ribavirin in a dose of 100 (group 1, n = 20), 200 (group 2, n = 10), or 400 mg/kg/day (group 3, n = 10) was administered subcutaneously on days 0 to 12 after virus inoculation, and animals were observed for 12 days. Control animals were injected with saline (n = 20). Mice treated with ribavirin survived longer than controls (mean survival 6.7 days for group 1, 7.4 days for group 2, 7.7 days for group 3, and 5.2 days for control; p less than .005). Myocardial virus titers on days 6 to 8 were significantly lower in group 2 (3.24 +/- 0.49 log10pfu/mg; p less than .005) and in group 3 (1.70 +/- 0.65 log10 pfu/mg; p less than .001) compared with controls (4.09 +/- 0.57 log10 pfu/mg). The incidence of gross myocardial lesions was significantly lower in group 1 (13/20, 65%), group 2 (2/10, 20%), and group 3 (0/20, 0%) compared with controls (20/20, 100%) (p less than .05). Histologic examination showed extensive myocardial necrosis and cellular infiltration in untreated groups; there was less infiltration in groups 2 and 3 (p less than .01) and less severe necrosis in group 3 (p less than .01). Thus ribavirin effectively inhibited myocardial virus replication and reduced the inflammatory response and myocardial damage in an experimental preparation of viral myocarditis.
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6571
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Wang H. [Establishment of five human pulmonary carcinoma cell lines and their biologic properties]. ZHONGHUA YI XUE ZA ZHI 1985; 65:208-11. [PMID: 2988714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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6572
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Xie BZ, Hu GJ, Yuan LX, Wang H, Jiang WD. [Effect of the central action of propranolol on coronary circulation in dogs]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1985; 6:33-6. [PMID: 3158156] [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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6573
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Wang H, Ikeda K, Kihara M, Nara Y, Horie R, Yamori Y. Sodium preference and excretion in spontaneously hypertensive rats on various diets. Clin Exp Pharmacol Physiol 1985; 12:139-44. [PMID: 4006318 DOI: 10.1111/j.1440-1681.1985.tb02316.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Stroke-prone spontaneously hypertensive rats (SHRSP) and stroke-resistant SHR (SHRSR) exhibited an increased preference for a 2% NaCl solution, relative to water, in comparison with normotensive Wistar-Kyoto (WKY), but the preference was lost quickly in SHRSP with unbroken exposure. Neither a high protein diet (50% fish protein) nor a low protein diet (5% protein) changed the salt water preference in SHRSR and the former abolished the preference more quickly in SHRSP. The fish protein diet, however, increased the ratio of urinary sodium excretion to dietary sodium intake in the first three days of exposure to a high salt intake in all groups. Results from this experiment suggest that an increased dietary protein intake can facilitate sodium excretion and may possibly ameliorate the adverse effect of a high sodium diet.
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6574
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Rosenbloom SB, Carson BS, Wang H, Rosenbaum AE, Udvarhelyi GB. Cerebellopontine angle lipoma. SURGICAL NEUROLOGY 1985; 23:134-8. [PMID: 3871257 DOI: 10.1016/0090-3019(85)90330-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Lipomas rarely occur intracranially. Moreover, the cerebellopontine angle is one of the more unusual sites of such hamartomas. Of the 11 reported cases, all but three caused symptoms related to compression of the cranial nerves in the cerebellopontine angle. Only three separate cases have been studied by computed tomography, and in one the fat density was not recognized. This report deals with the clinical presentations, surgical management, and radiologic assessment of these lesions.
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6575
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Wang H, Ikeda K, Kihara M, Nara Y, Horie R, Yamori Y. Effect of dietary urea on blood pressure in spontaneously hypertensive rats. Clin Exp Pharmacol Physiol 1984; 11:555-61. [PMID: 6536416 DOI: 10.1111/j.1440-1681.1984.tb00867.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The feeding of a normal diet containing 13.5% urea (in place of protein in a high protein diet) attenuated the development of severe hypertension and decreased the incidence of stroke in spontaneously hypertensive rats (SHR), when 1% NaCl solution was given to them. The urea not only increased urine volume, but also increased urinary sodium excretion in SHR given 1% NaCl for drinking. Although there was no obvious difference in erythrocyte size between the urea and the control groups, there was a significant inverse correlation between plasma urea level and erythrocyte size. These results suggest that a high protein diet reduced blood pressure partly through the diuretic effect of urea, the common metabolite of various proteins.
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