1351
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Kroll J, Linde P, Habenicht M, Chan S, Yang M, Vang T, Souvannasoth L, Nguyen T, Ly M, Nguyen H. Medication compliance, antidepressant blood levels, and side effects in Southeast Asian patients. J Clin Psychopharmacol 1990; 10:279-83. [PMID: 2286700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A study of medication compliance, side effects, and clinical change with the use of antidepressants in 32 Southeast Asian refugee patients seen at an urban mental health center is reported. Patients met criteria for either major depressive episode, posttraumatic stress disorder, or both. Only five of the 32 patients who stated that they were taking their medications regularly had antidepressant blood levels in the therapeutic range. Another 10 patients had subtherapeutic levels and the remaining 17 had undetectable blood levels. Patients with therapeutic blood levels had fewer side effects (p = 0.049) than patients with undetectable blood levels. Blood levels tended (p = 0.070) to be correlated with clinical improvement. The authors discuss cultural attitudes of Southeast Asian refugee patients toward medication use and side effects that appear to influence medication compliance.
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1352
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Kao Y, Yang M. Note on regularization dependence of loop corrections to the non-Abelian Chern-Simons term. Int J Clin Exp Med 1990; 41:3267-3268. [PMID: 10012260 DOI: 10.1103/physrevd.41.3267] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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1353
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Smith TL, Gaskell J, Berka RM, Yang M, Henner DJ, Cullen D. The promoter of the glucoamylase-encoding gene of Aspergillus niger functions in Ustilago maydis. Gene 1990; 88:259-62. [PMID: 2112106 DOI: 10.1016/0378-1119(90)90040-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Promoter sequences from the Aspergillus niger glucoamylase-encoding gene (glaA) were linked to the bacterial hygromycin (Hy) phosphotransferase-encoding gene (hph) and this chimeric marker was used to select Hy-resistant (HyR) Ustilago maydis transformants. This is an example of an Ascomycete promoter functioning in a Basidiomycete. HyR transformants varied with respect to copy number of integrated vector, mitotic stability, and tolerance to Hy. Only 216 bp of glaA promoter sequence is required for expression in U. maydis but this promoter is not induced by starch as it is in Aspergillus spp. The transcriptional start points are the same in U. maydis and A. niger.
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1354
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Andresen MC, Yang M, Nelson SH, Steinsland OS. Cocaine inhibits baroreflex control of blood pressure by actions at arterial baroreceptors. THE AMERICAN JOURNAL OF PHYSIOLOGY 1990; 258:H1244-9. [PMID: 2331013 DOI: 10.1152/ajpheart.1990.258.4.h1244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Blood pressure and heart rate often increase during cocaine intoxication, but the mechanisms of these cardiovascular responses are poorly understood. The most often suggested theories are central nervous system mechanisms involving the blockade of neuronal transmitter uptake. Cocaine also has potent local anesthetic properties, and in this study we tested the possible role of peripheral actions of cocaine at baroreceptor afferents. Single fiber baroreceptors were recorded using an in vitro preparation of the rat aortic arch. Diameter, pressure, and baroreceptor discharge were recorded. Cocaine perfused through the lumen of the aortic arch at a suprathreshold pressure reduced baroreceptor discharge within 90 s of entering the lumen of the aorta. Slow ramps of pressure elicited complete pressure- and diameter-discharge curves every 5 min. Beginning at about 1 microM, cocaine inhibited baroreceptor function; threshold increased, the maximum discharge decreased, and at 100 microM cocaine, all discharge ceased. The vasodilator nitroprusside or the alpha 1-adrenoreceptor antagonist prazosin did not affect baroreceptor responses to cocaine. In in vivo tests in rabbits, cocaine that perfused through a vascularly isolated carotid sinus reduced the slope of the baroreflex relationship between carotid sinus pressure and systemic mean arterial pressure. Significant depression of baroreceptor function was found at concentrations similar to the plasma cocaine levels measured in clinical studies. The local anesthetic properties of cocaine may be involved in baroreceptor effects. Our studies suggest a possible contributing role of a new site of action of cocaine outside the central nervous system. Compromise of baroreceptor reflexes could facilitate the development of serious cardiovascular complications associated with cocaine abuse.
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1355
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Sekar MC, Yang M, Meezan E, Pillion DJ. Angiotensin II and bradykinin stimulate phosphoinositide breakdown in intact rat kidney glomeruli but not in proximal tubules: glomerular response modulated by phorbol ester. Biochem Biophys Res Commun 1990; 166:373-9. [PMID: 2154205 DOI: 10.1016/0006-291x(90)91955-r] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We have investigated the effect of angiotensin II, bradykinin, insulin and insulin-like growth factor I on phosphoinositide turnover in intact rat glomeruli and tubules. Angiotensin II produced a dose-dependent increase in inositol monophosphate formation with an IC50 of 10(-7)M, when added to isolated rat glomeruli. Angiotensin II-stimulated inositol phosphates formation was inhibited by the angiotensin receptor antagonist [Sar-Leu8]angiotensin II, indicating that the above response was mediated through activation of an angiotensin receptor in intact glomeruli. Besides angiotensin, in intact glomeruli, only bradykinin stimulated a phosphoinositide response, while in intact proximal tubules, none of the agonists tested produced an activation of the inositol phosphate formation. Angiotensin II- and bradykinin-stimulated inositol phosphate accumulation in intact glomeruli was inhibited by phorbol myristate acetate, an activator of protein kinase C.
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1356
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Chen TF, Lin SG, Chen LX, Jiang GF, Liang ZY, Yang M, Qian YZ, Xie YA. [Enhancement of absorption of tetramethylpyrazine by synthetic borneol]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1990; 11:42-4. [PMID: 2403013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Sprague-Dawley rats were given ig tetramethylpyrazine phosphate (TMP) 5 mg/kg with or without previous borneol 5 mg/kg. The plasma TMP concentrations were analysed by GC method, and the data were treated by NONLIN program. The Cmax were 931 and 562 ng/ml, respectively, (P less than 0.01); while the AUC were 68,849 and 37,174, respectively, (P less than 0.05). It is suggested that the borneol enhances the absorption of the TMP but not in elimination.
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1357
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Kroll J, Habenicht M, Mackenzie T, Yang M, Chan S, Vang T, Nguyen T, Ly M, Phommasouvanh B, Nguyen H. Depression and posttraumatic stress disorder in Southeast Asian refugees. Am J Psychiatry 1989; 146:1592-7. [PMID: 2589553 DOI: 10.1176/ajp.146.12.1592] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The authors report on 404 Southeast Asian refugees seen at a community clinic. Approximately three-quarters of these patients met DSM-III criteria for major depressive episode, and 14% had posttraumatic stress disorder. Complaints of pain and sleep disturbances were the predominant presenting symptoms. Most of the men were married, but more than 40% of the women were widowed. Between 15% and 30% of the patients reported specific traumatic experiences either in their homeland or during their escape. Widowhood and such traumatic experiences were positively correlated with more symptoms of depression and anxiety.
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1358
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Arulkumaran S, Yang M, Ingemarsson I, Singh P, Ratnam SS. Augmentation of labour: does oxytocin titration to achieve preset active contraction area values produce better obstetric outcome? ASIA-OCEANIA JOURNAL OF OBSTETRICS AND GYNAECOLOGY 1989; 15:333-7. [PMID: 2696457 DOI: 10.1111/j.1447-0756.1989.tb00197.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The value of quantifying active contraction area to guide oxytocin titration in augmentation of labour was investigated by a randomised trial. Sixty-eight nulliparae with slow progress of labour had oxytocin titrated to achieve preset "optimal" active contraction area or "optimal" frequency of contractions in a randomised manner. There was no difference in maternal characteristics of age and height, pre-augmentation period of observed labour or cervical dilatation at the onset of augmentation between the 2 groups. The maximum dose of oxytocin, post-augmentation period and the number of operative deliveries were similar. There was no difference in the mean birth weight of neonates, or in the number of neonates who had low Apgar score or acidotic cord arterial blood pH. Our results suggest that there may be no advantage in oxytocin titration to achieve preset "optimal" active contraction area compared with "optimal" frequency of uterine contractions in nulliparae with slow progress of labour.
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1359
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Pillion DJ, Arnold P, Yang M, Stockard CR, Grizzle WE. Receptors for insulin and insulin-like growth factor-I in the human adrenal gland. Biochem Biophys Res Commun 1989; 165:204-11. [PMID: 2556134 DOI: 10.1016/0006-291x(89)91055-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Human adrenal glands contain high-affinity receptors for insulin and insulin-like growth factor I (IGF-I). Comparative studies with rat, hamster and human adrenal membranes confirmed that IGF-I receptors are most abundant in rat and hamster adrenals, whereas insulin and IGF-I receptors are present in equivalent numbers in human adrenal glands. Covalent crosslinking studies revealed that the human adrenal gland IGF-I receptor binding subunit migrated on dodecyl sulfate polyacrylamide gels with Mr = 135,000, which is identical to the migration of IGF-I receptor binding subunits isolated from other tissues. Autoradiography of frozen human adrenal slices incubated with [125I]insulin showed prominent, displaceable binding of this radioligand to the zona reticularis, zona glomerulosa, vasculature and medulla; in contrast, [125I]IGF-I binding to human adrenal tissue was most prominent in the zona reticularis and negligible in the medullary region.
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1360
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Grau CR, Roudybush TE, Vohra P, Kratzer FH, Yang M, Nearenberg D. Obscure relations of feather melanization and avian nutrition. WORLD POULTRY SCI J 1989. [DOI: 10.1079/wps19890015] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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1361
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Andresen MC, Yang M. Arterial baroreceptor resetting: contributions of chronic and acute processes. CLINICAL AND EXPERIMENTAL PHARMACOLOGY & PHYSIOLOGY. SUPPLEMENT 1989; 15:19-30. [PMID: 2805444 DOI: 10.1111/j.1440-1681.1989.tb02993.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
1. Pressure threshold (Pth) and suprathreshold pressure sensitivity (Sth) are important measures of the pressure-discharge characteristics of arterial baroreceptors. An in vitro preparation of the rat aortic arch-aortic nerve has been used to assess the influence of extracellular ion concentration, distensibility, smooth muscle activation and rapid resetting on single fibre baroreceptor discharge. 2. Changes in extracellular cations alter Pth and Sth in a reciprocal manner, suggesting that these two properties share common excitatory mechanisms probably at the level of membrane ion conductance channels. 3. During normal development and ageing in normotensive rats, Pth and blood pressure are fairly constant even during periods of greatly changing aortic distensibility. Sth increases progressively to maturity and then decreases somewhat with advanced age. 4. During hypertension, changes in distensibility in spontaneously hypertensive rats do not account for changes in Pth and Sth. 5. The capacity of arterial baroreceptors to rapidly reset during acute changes in the conditioning mean arterial pressure is not altered by chronic resetting, decreases in distensibility or by differences in the initial Pth or Sth of individual baroreceptors. 6. Within the maximal physiological or pathophysiological range, the prevailing or conditioning mean arterial pressure appears to be the most potent modulator of arterial baroreceptor discharge.
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1362
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Yang M, Huang G, Zheng DY, Qian YJ, Wu KM, Li YF, Tang SF. [Differences in length and weight growth patterns between urban and rural infants]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1989; 20:194-7. [PMID: 2591933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Mixed longitudinal data of length and weight growth from 595 rural and 337 urban infants were analysed. Count models were fitted to the means of length and weight in different ages, sexes and feedings separately. The curve fitting to the data was rather satisfactory. Comparison of model parameters between urban and rural infants suggested that rural infants had a higher length level at birth but lower accelerative growth afterwards than urban ones, which was even more obvious in breast-fed infants. The difference in birth weight between them was not significant; and the urban infants had a faster linear growth velocity than rural ones. These results might be caused by the fact that food supplementing in urban infants was significantly earlier and better than in rural ones.
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1363
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Rosenberg JW, Yang M. Carcinoid tumor of the testicle. NEW JERSEY MEDICINE : THE JOURNAL OF THE MEDICAL SOCIETY OF NEW JERSEY 1989; 86:299-300. [PMID: 2725976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Carcinoid tumors commonly are found in the gastrointestinal tract; they rarely are found in the testicle. An illustrative case is presented and the entity discussed. Variables regarding prognosis are reviewed.
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1364
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Andresen MC, Yang M. Interaction among unitary spike trains: implications for whole nerve measurements. THE AMERICAN JOURNAL OF PHYSIOLOGY 1989; 256:R997-1004. [PMID: 2539760 DOI: 10.1152/ajpregu.1989.256.4.r997] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Interaction among action potential trains was examined in electroneurograms (ENGs) from filaments containing several fibers. In an in vitro preparation, increasing aortic pressure generated trains of action potentials (spikes) from regularly discharging aortic baroreceptors. Multifiber records were electronically sorted, and spikes from each separate baroreceptor were identified. "True" discharge rates, measured as the instantaneous frequency of the sorted records, were compared with the results of three quantitation approaches commonly used for multifiber or whole nerve activity in mass ENGs: "spike" counts per unit time, ENG voltage integration, and normalizations of counts or integration. Even in ENGs containing only two active baroreceptors, numerous interactions of the two spike trains occurred. Of 33 paired recordings (66 baroreceptors), 77.3% of the individual baroreceptors had spike trains that could not be clearly discriminated because of interactions with signals from other baroreceptors. Virtually all baroreceptors (96.3%) in nine three-fiber ENGs (27 baroreceptors) showed evidence of missed spikes. Corrected or true spike rates were always greater than activity rates measured by simple counting. Similarity of discharge frequencies in the different baroreceptors was the most important determinant of the rate of voltage signal interaction. Simple count or integration methods underestimated slopes of pressure-response curves and peak activity values by 20-40% compared with sorted instantaneous frequency. Not all coincidence of action potentials in the ENG resulted in simple additions of peak voltages. We conclude that simple counting and integrative techniques substantially underestimate multifiber nerve activity and such quantitation techniques should be used cautiously, particularly in experimental comparisons across groups of animals.(ABSTRACT TRUNCATED AT 250 WORDS)
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1365
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Xu CJ, Wan DG, Yang M. [A study on traditional processing methods using drug juice]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1989; 14:22-5, 63. [PMID: 2504201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The traditional processing with drug juice has a long history, rich contents, rigid regularities and a variety of method. It is one of the important processing methods in Chinese medicine. To systematize and make better use of the traditional methods of processing drug juices, this paper has conducted an investigation from such angles as historical background, approximate rules of composing and clinical application.
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1366
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Pon LA, Vestweber D, Yang M, Schatz G. Interaction between mitochondria and the nucleus. JOURNAL OF CELL SCIENCE. SUPPLEMENT 1989; 11:1-11. [PMID: 2693455 DOI: 10.1242/jcs.1989.supplement_11.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The interaction between the mitochondrial and the nuclear genome is in part mediated by proteins (and possibly also RNAs) which are encoded in the nucleus and imported into mitochondria. We are beginning to understand how proteins can penetrate across both mitochondrial membranes and how some of these proteins can regulate the expression of specific mitochondrial genes.
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1367
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Yang M, Jensen RE, Yaffe MP, Oppliger W, Schatz G. Import of proteins into yeast mitochondria: the purified matrix processing protease contains two subunits which are encoded by the nuclear MAS1 and MAS2 genes. EMBO J 1988; 7:3857-62. [PMID: 2905264 PMCID: PMC454964 DOI: 10.1002/j.1460-2075.1988.tb03271.x] [Citation(s) in RCA: 135] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We have purified the metalloprotease which is localized in the soluble matrix space of Saccharomyces cerevisiae mitochondria and cleaves the amino-terminal matrix-targeting sequences from imported mitochondrial precursor proteins. The enzyme consists of two loosely associated non-identical subunits of mol. wt 48,000 and 51,000, respectively. Attempts to separate the two subunits from each other caused loss of activity. The smaller subunit had been identified as the product of the nuclear MAS1 gene (Witte et al., 1988). The larger subunit is now identified as the product of the nuclear MAS2 gene.
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1368
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Henner DJ, Yang M, Chen E, Hellmiss R, Rodriguez H, Low MG. Sequence of the Bacillus thuringiensis phosphatidylinositol specific phospholipase C. Nucleic Acids Res 1988; 16:10383. [PMID: 3194218 PMCID: PMC338883 DOI: 10.1093/nar/16.21.10383] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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1369
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Henner DJ, Yang M, Ferrari E. Localization of Bacillus subtilis sacU(Hy) mutations to two linked genes with similarities to the conserved procaryotic family of two-component signalling systems. J Bacteriol 1988; 170:5102-9. [PMID: 3141378 PMCID: PMC211577 DOI: 10.1128/jb.170.11.5102-5109.1988] [Citation(s) in RCA: 122] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Mutations in the sacU region have a pleiotropic phenotype. Certain mutations designated sacU(Hy), for example, express degradative enzymes at high levels, are able to sporulate in the presence of glucose, have severely reduced transformation efficiencies, and are nonmotile. We isolated and sequenced the sacU gene region of Bacillus subtilis. Two open reading frames were found in the sacU region, and sacU(Hy) mutations were localized to both of these open reading frames. The two open reading frames have similarities to two widespread families of proteins that mediate responses to environmental stimuli.
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1370
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Abstract
A high-frequency switching system is demonstrated to exist in Dictyostelium discoideum. Switch phenotypes are distinguished by colony morphology and include changes in developmental timing as well as blocks in morphogenesis. The switching system exhibits the following characteristics: (1) a "low" spontaneous frequency of switching (approximately 10(-2] in the parent strain; (2) stimulation of the basal level of switching roughly fivefold with low doses of ultraviolet light; (3) "high" spontaneous frequencies of switching (as high as 10(-1] in particular variant strains; (4) high spontaneous frequencies of interconvertibility between variant phenotypes; (5) high spontaneous frequencies of reversion to the wild-type phenotype; (6) a set of reproducible switch phenotypes; (7) heritability of switch phenotypes; and (8) a rough correlation between switch phenotype and switching frequency. The extraordinary similarity between the switching systems in D. discoideum and Candida albicans is discussed.
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1371
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Pillion DJ, Yang M, Grizzle WE. Distribution of receptors for insulin and insulin-like growth factor I (somatomedin C) in the adrenal gland. Biochem Biophys Res Commun 1988; 154:138-45. [PMID: 2969238 DOI: 10.1016/0006-291x(88)90661-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Rat adrenal glands contain cell surface high-affinity receptors for several peptide hormones. Receptors for IGF-I were abundant in this tissue, but receptors for insulin were relatively scarce. The behavior of adrenal membrane IGF-I receptors in radioligand binding assays was similar to the behavior of IGF-I receptors from other tissues, with a KD congruent to 6.2 x 10(-9) M. Covalent cross-linking studies with [125I]IGF-I revealed an IGF-I receptor alpha-subunit with Mr congruent to 135,000 on dodecyl sulfate polyacrylamide gel electrophoresis under reducing conditions, as well as a smaller radiolabeled peptide, Mr = 116,000. In contrast, little binding of [125I]insulin to adrenal membranes was observed and no labeling occurred in cross-linking studies using [125I]insulin. These results contrast with the findings of whole-body autoradiographic studies that indicated substantial binding of [125I]insulin to adrenal glands and suggest that IGF-I, rather than insulin, may play a critical role in the growth and development of the adrenal gland.
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1372
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Abstract
A method is described for calculating age-related centiles which makes no assumption about the nature of the distribution of the measurement at a fixed age.
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1373
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Zhang YF, Zhang ZS, Yang M. [Factors influencing 5-year survival and 6-month mortality after resection of lung cancer]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 1987; 25:583-5, 613. [PMID: 3449340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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1374
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Yang M, Yang Y. [Logit analysis for comparison of treatment effects of categorical data]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1987; 18:153-6. [PMID: 3623541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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1375
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Yang M, Reilly J. A reflectron mass spectrometer with UV laser-induced surface ionization. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0168-1176(87)83055-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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1376
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Yang M, Shimotsu H, Ferrari E, Henner DJ. Characterization and mapping of the Bacillus subtilis prtR gene. J Bacteriol 1987; 169:434-7. [PMID: 3098734 PMCID: PMC211789 DOI: 10.1128/jb.169.1.434-437.1987] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
A gene from Bacillus natto encoding a 60-amino-acid peptide has been previously described that, when cloned on a high-copy plasmid in B. subtilis, enhances production of alkaline protease, neutral protease, and levansucrase. An identical gene was isolated from B. subtilis and caused a similar phenotype when placed on a high-copy plasmid. Genetic mapping localized this gene near metB, distant from other pleiotropic genes causing similar effects. Deletion of this gene from the B. subtilis chromosome had no obvious phenotypic effect.
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1377
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Rabow L, DeSalles AF, Becker DP, Yang M, Kontos HA, Ward JD, Moulton RJ, Clifton G, Gruemer HD, Muizelaar JP. CSF brain creatine kinase levels and lactic acidosis in severe head injury. J Neurosurg 1986; 65:625-9. [PMID: 3772449 DOI: 10.3171/jns.1986.65.5.0625] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The posttraumatic creatine kinase-BB isoenzyme (CKBB) activity and lactate concentration in ventricular cerebrospinal fluid (CSF) have been studied in 29 patients with severe head injuries. The CKBB activity reaches its maximum a few hours after trauma, and has a monoexponential drop with a half-time of approximately 10 hours. Ventricular CSF lactate concentration continues to rise in patients with a poor outcome, and decreases only slowly and inconsistently in most of the other patients. Thus, increase of lactate in the ventricular CSF is not, like CKBB, a direct one-stage consequence of the trauma but is due to continuous production from a derangement of metabolism caused by the trauma. Since even higher ventricular CSF lactate levels can be survived when not caused by head injury, and since no significant pH changes were related to the ventricular CSF lactic acidosis in these artificially ventilated patients, it is concluded that ventricular CSF lactic acidosis is indicative of a severe, although not necessarily intractable, disturbance of brain function associated with intracellular lactate production and acidosis.
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1378
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Yang M, Ferrari E, Chen E, Henner DJ. Identification of the pleiotropic sacQ gene of Bacillus subtilis. J Bacteriol 1986; 166:113-9. [PMID: 3007431 PMCID: PMC214565 DOI: 10.1128/jb.166.1.113-119.1986] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The sacQ gene of Bacillus subtilis, a pleiotropic gene affecting the expression of a number of secreted gene products, has been identified as a small 46-amino-acid polypeptide. The increased expression of this polypeptide in strains carrying the sacQ36 allele, or in strains carrying the sacQ gene on a high copy plasmid, appears to be responsible for the phenotype of higher levels of proteases seen in these strains. A deletion of the sacQ gene had no apparent phenotype, indicating that it is not an essential gene.
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1379
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Wang Y, Cheng MC, Lin LC, Koh VC, Yang M. Structure of 3-benzylidenephthalide, C15H10O2. Acta Crystallogr C 1985. [DOI: 10.1107/s0108270185006023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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1380
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Yang M. [A method of dissecting mixed samples for estimating the normal value in medicine]. ZHONGHUA YU FANG YI XUE ZA ZHI [CHINESE JOURNAL OF PREVENTIVE MEDICINE] 1983; 17:275-9. [PMID: 6675965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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1381
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Ottinger C, Reichmuth J, Yang M. Luminescent charge transfer of ground-state and metastable B+ ions. Chem Phys 1983. [DOI: 10.1016/0301-0104(83)85050-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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1382
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Xu Y, Liu J, Yang M. [A study of the prenatal growth and development of the temporomandibular joint (TMJ)]. SICHUAN YI XUE YUAN XUE BAO = ACTA ACADEMIAE MEDICINAE SICHUAN 1983; 14:1-7. [PMID: 6573027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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1383
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Yang M, Galizzi A, Henner D. Nucleotide sequence of the amylase gene from Bacillus subtilis. Nucleic Acids Res 1983; 11:237-49. [PMID: 6186986 PMCID: PMC325711 DOI: 10.1093/nar/11.2.237] [Citation(s) in RCA: 156] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The gene coding for amylase (EC.3.2.1.1) has been isolated and sequenced from Bacillus subtilis by cloning in lambda Charon4A and pBR322. The entire coding sequence and large preceding and following regions, comprising the presumed transcriptional and translational regulatory regions, were sequenced. The coding sequence shows a large open reading frame with a translated molecular weight of 72,800 and a presumed signal sequence of approximately thirty-two amino acids. When the intact gene is present in Escherichia coli, it confers the ability to degrade starch, indicating that the gene is expressed in a functional state.
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1384
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Sargent TD, Jagodzinski LL, Yang M, Bonner J. Fine structure and evolution of the rat serum albumin gene. Mol Cell Biol 1981; 1:871-83. [PMID: 6287210 PMCID: PMC369375 DOI: 10.1128/mcb.1.10.871-883.1981] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The exons, their boundaries, and approximately half of the intronic deoxyribonucleic acid of the rat serum albumin gene were sequenced. In addition to the 14 exons identified earlier by R-loop analysis, a small exon was detected between the "leader" exon (Z) and exon B. The leader exon encoded the 5'-untranslated portion of albumin messenger ribonucleic acid and the "pre-pro" oligopeptide present on the nascent protein. The sites of initiation and termination of transcription were tentatively identified by comparison of the 5' and 3' gene-flanking sequences with those of other eucaryotic genes. All 28 intron/exon junctions conformed to the "GT-AG rule" (Breathnach et al., Proc. Natl. Acad. Sci. 75:4853-4857, 1978). The three homologous domains of albumin were encoded by three subgenes that consisted of four exons each and evolved by intragenic duplication of a common ancestor. The second and forth exons of each subgene appeared to be the result of an even earlier duplication event. We propose a model for the evolution of this gene that accounts for the observed patterns of exon size and homology.
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1385
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Jagodzinski LL, Sargent TD, Yang M, Glackin C, Bonner J. Sequence homology between RNAs encoding rat alpha-fetoprotein and rat serum albumin. Proc Natl Acad Sci U S A 1981; 78:3521-5. [PMID: 6167988 PMCID: PMC319601 DOI: 10.1073/pnas.78.6.3521] [Citation(s) in RCA: 123] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
We have determined the sequences of the recombinant DNA inserts of three bacterial plasmid cDNA clones containing most of the rat alpha a-fetoprotein mRNA. The resultant nucleotide sequence of alpha-fetoprotein was exhaustively compared to the nucleotide sequence of the mRNA encoding rat serum albumin. These two mRNAs have extensive homology (50%) throughout and the same intron locations. The amino acid sequence of rat alpha-fetoprotein has been deduced from the nucleotide sequence, and its comparison to rat serum albumin's amino acid sequence reveals a 34% homology. The regularly spaced positions of the cysteines found in serum albumin are conserved in rat alpha-fetoprotein, indicating that these two proteins may have a similar secondary folding structure. These homologies indicate that alpha-fetoprotein and serum albumin were derived by duplication of a common ancestral gene and constitute a gene family.
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1386
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Awazawa Y, Hayashi K, Nishimoto H, Tobari H, Yang M. On the entire aspect of the enamel lamella in human tooth enamel examined by parallel grinding close to its location. BULLETIN DU GROUPEMENT INTERNATIONAL POUR LA RECHERCHE SCIENTIFIQUE EN STOMATOLOGIE & ODONTOLOGIE 1981; 24:11-25. [PMID: 7030436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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1387
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Sargent TD, Yang M, Bonner J. Nucleotide sequence of cloned rat serum albumin messenger RNA. Proc Natl Acad Sci U S A 1981; 78:243-6. [PMID: 7017712 PMCID: PMC319028 DOI: 10.1073/pnas.78.1.243] [Citation(s) in RCA: 154] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The nucleotide sequences of the recombinant DNA inserts of three bacterial plasmid clones containing nearly all of the rat serum albumin mRNA have been determined. A statistical analysis of the nucleotide sequence reveals a pattern of repeated internal homology that confirms the "intragenic triplication" model of albumin evolution.
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1388
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Pang PK, Yang M, Oguro C, Phillips JG, Yee JA. Hypotensive actions of parathyroid hormone preparations in vertebrates. Gen Comp Endocrinol 1980; 41:135-8. [PMID: 6967035 DOI: 10.1016/0016-6480(80)90043-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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1389
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Pang PK, Tenner TE, Yee JA, Yang M, Janssen HF. Hypotensive action of parathyroid hormone preparations on rats and dogs. Proc Natl Acad Sci U S A 1980; 77:675-8. [PMID: 6102381 PMCID: PMC348338 DOI: 10.1073/pnas.77.1.675] [Citation(s) in RCA: 73] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Bovine parathyroid extract and two commercial preparations containing the first 34 amino acids of synthetic bovine parathyroid hormone [bPTH-(1-34)]produced dose-related hypotension in anesthetized rats. Dogs were 10 times more sensitive to the two bPTH-(1-34) preparations than were rats. Propranolol, phentolamine, atropine, and promethazine did not affect the hypotensive action of bPTH-(1-34) in rats and dogs. bPTH-(1-34) decreased perfusion pressure in rat hindlimbs perfused in situ with Ringer's solution and was a vasodilator in dog kidneys perfused in vitro with Ringer's solution. Helical strips of rabbit aorta were also relaxed by bPTH-(1-34). We conclude that the direct vasodilatory action of bPTH preparations represents an intrinsic property of parathyroid hormone and that the hypotensive effect of this hormone is produced by part or all of the first NH2-terminal 34 amino acids.
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1390
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Smith JR, Karacan I, Yang M. Ontogeny of delta activity during human sleep. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY 1977; 43:229-37. [PMID: 69533 DOI: 10.1016/0013-4694(77)90130-4] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The study describes the ontogenetic and time-related changes in peak amplitude, frequency, and incidence of delta waves of twenty-five normal subjects between the ages of 3 and 79 years of age. All slow waves greater then 5 muV in magnitude and between 0.5 and 3.0 c/sec were analyzed for the first 6 h of the night's sleep. In this study increasing age was accompanied by decreases in average peak amplitude of delta waves over 5 muV, slowing of delta frequencies, and decreases in incidence of waves greater than 20 muV. Across 2-h epochs of the night there were tendencies for the average peak amplitude of delta waves to decrease, for the average frequency for a given amplitude range to decrease, and for the incidence of low-amplitude delta waves to increase and high-amplitude waves to decrease. The incidence of waves greater than 5 muV remained constant across ages and epochs. Frontal channel delta waves exhibited an age-group difference whereas no such difference was apparent for central channel delta activity, suggesting that the frontal channel may possess advantages over the central because of greater sensitivity to age related changes.
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1391
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Sousa MD, Yang M, Lopes-Corrales E, Tan C, Hansen JA, Dupont B, Good RA. Ecotaxis: the principle and its application to the study of Hodgkin's disease. Clin Exp Immunol 1977; 27:143-51. [PMID: 300302 PMCID: PMC1540896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A study of the function, characterization and distribution of T and B lymphocytes in five children with Hodgkin's disease is presented. The results, indicating that lymphocyte depletion in the peripheral blood does not necessarily reflect an overall lack of circulating lymphocytes, are presented to demonstrate that failure of ecotaxis (normal lymphocyte migration and distribution) can occur in man. The underlying reasons for such failure and their relevance to the pathogenesis of Hodgkin's disease are discussed.
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1392
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Wang JH, Yang M. Generation of ATP by chloroplasts through solvent perturbation. Biochem Biophys Res Commun 1976; 73:673-8. [PMID: 12757 DOI: 10.1016/0006-291x(76)90863-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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1393
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Smith JR, Karacan I, Keane BP, Yang M. Automated sleep EEG analysis applied to the evaluation of drugs: illustration by study of clorazepate dipotassium. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY 1976; 41:587-94. [PMID: 62653 DOI: 10.1016/0013-4694(76)90004-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An automated sleep EEG analysis system was used to evaluate the effects of clorazepate dipotassium in normal subjects. Ten young-adult men slept 18 consecutive nights in the laboratory. On days 8-15 clorazepate (7.5 mg) was administered three times daily; on days 5-7 and 16-18 a placebo was administered in a similar fashion. The drug reduced amounts of alpha and delta activity and increased the amount of beta activity and the number of spindles. These effects generally persisted through the 3 day placebo recovery period. Our results suggest that sleep EEG waveform descriptors are sensitive indicators of drug activity and that beta activity in particular may be useful in the detailed description of various drug effects.
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1394
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Berlinger NT, Tsakraklides V, Pollak K, Adams GL, Yang M, Good RA. Prognostic significance of lymph node histology in patients with squamous cell carcinoma of the larynx, pharynx, or oral cavity. Laryngoscope 1976; 86:792-803. [PMID: 778514 DOI: 10.1288/00005537-197606000-00007] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In a double-blind retrospective analysis, sections of lymph nodes regional to head and neck squamous cell carcinomas were microscopically examined to assess morphologically the immunologic pattern of response. Patients whose nodes showed evidence of immunologic stimulation had five-year survival rates significantly higher than those whose nodes showed no evidence of immunologic stimulation. None of the patients whose nodes showed the lymphocyte depletion pattern survived five years. The stage or histologic grade of the tumors did not influence these correlations. Metastases occurred much more frequently in patients whose nodes showed immunologic activity than in those whose did not. The data support the concept that immunologic capacities are important host defense mechanisms against malignancy. Histologic assessment of immunologic activity in regional nodes seems to be an important parameter for predicting survival.
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1395
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Berlinger NT, Tsakraklides V, Pollack K, Adams GL, Yang M, Good RA. Immunologic assessment of regional lymph node histology in relation to survival in head and neck carcinoma. Cancer 1976; 37:697-705. [PMID: 1253104 DOI: 10.1002/1097-0142(197602)37:2<697::aid-cncr2820370214>3.0.co;2-i] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Histologic material from 84 cases of squamous cell carcinoma of head and neck regions was studied by double blind retrospective analysis. Sections of lymph nodes draining the tumors were examined microscopically to assess the morphologic pattern of response. Patients whose lymph nodes demonstrated active immunologic responses in the form of expanded inner cortices or increased numbers of germinal centers had 5-year survival rates significantly greater than those patients whose regional lymph nodes showed an unstimulated pattern. None of the patients whose lymph nodes showed the depleted pattern survived 5 years. These correlations were independent of the stage or grade of the tumor. Metastases occurred much more frequently in patients having regional nodes showing an unstimulated or depleted pattern than in those whose regional nodes showed evidence of immunologic activity. The data support the concept of a relationship between immunologic activity, progression of neoplasia, and survival. Morphologic assessment of immunologic activity in lymph nodes draining malignant tumors appear to be of significant value in the predicting survival.
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1396
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Sanger VL, Yang M, Mickelsen O. Cycasin-induced central nervous system lesions in postnatal mice. FEDERATION PROCEEDINGS 1972; 31:1524-9. [PMID: 5056177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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1397
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Jones M, Yang M, Mickelsen O. Effects of methylazoxymethanol glucoside and methylazoxymethanol acetate on the cerebellum of the postnatal Swiss albino mouse. FEDERATION PROCEEDINGS 1972; 31:1508-11. [PMID: 5056175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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1398
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Yang M, Jin YH, Kim ES, Kim IS. [Nursing care of a patient with kidney transplantation]. TAEHAN KANHO. THE KOREAN NURSE 1969; 8:22-30. [PMID: 4183742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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