1151
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Miller DP, Toivio-Kinnucan M, Wu G, Wilt GR. Ultrastructural and electrophoretic analysis of Treponema hyodysenteriae axial filaments. Am J Vet Res 1988; 49:786-9. [PMID: 3400914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Axial filaments of Treponema hyodysenteriae were purified and examined by transmission electron microscopy. The size and fine structure of the filaments were similar to those of Treponema zuelzerae and Treponema phagedenis biotype reiterii. Filaments were dissociated by heat and 2-mercaptoethanol and examined by polyacrylamide-gel electrophoresis. Six protein bands were evident, with approximate molecular weights of 39,000, 29,000, 27,000, 22,000, 21,000, and 18,500 daltons. All the proteins reacted with T hyodysenteriae and T innocens rabbit antisera, using the immunoblot technique.
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1152
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Wu G, Thompson JR. Arachidonic acid, prostaglandin E2 and F2 alpha inhibit leucine degradation in chick skeletal muscle. BIOCHEMISTRY INTERNATIONAL 1988; 16:227-34. [PMID: 3130060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Arachidonic acid (5 microM), prostaglandin E2 (0.28 microM) and F2 alpha (14 microM) inhibited (P less than 0.01) the rates of net leucine transamination, leucine oxidative decarboxylation and total CO2 production from leucine in extensor digitorum communis muscles from fed ten-day-old chicks. Indomethacin (50 microM) markedly inhibited (P less than 0.01) the rate of PGE2 production in the presence of 5 microM arachidonic acid and prevented the inhibition of leucine degradation by arachidonic acid in skeletal muscle. These results demonstrate that the actions of arachidonic acid on leucine degradation in chick skeletal muscle are mediated by metabolites generated via the cyclooxygenase pathway and that prostaglandins may play a role in the regulation of leucine degradation in skeletal muscle.
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1153
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Wu G, Thompson JR. Effect of pyruvate, octanoate and glucose on leucine degradation in skeletal muscle from fed and fasted chicks. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1988; 20:521-6. [PMID: 3371527 DOI: 10.1016/0020-711x(88)90500-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
1. Pyruvate at 5 mM decreased the rate of leucine oxidative decarboxylation and increased the rate of 2-oxoisocaproate production in extensor digitorum communis (EDC) muscles from both fed and 24-hr fasted chicks. Pyruvate at 5 mM increased the net rate of leucine transamination in EDC muscle from fed chicks and had no effect in EDC muscles from 24-hr fasted chicks. 2. Octanoate at 0.2 and 1 mM markedly increased the rates of net leucine transamination, leucine oxidative decarboxylation and oxidation of decarboxylated leucine carbons 2-6 in EDC muscles from fed chicks, but had no effect on these parameters of leucine degradation in muscles from 24-hr fasted chicks. 3. Glucose at 5 and 12 mM decreased the rates of leucine oxidative decarboxylation and oxidation of decarboxylated leucine carbons 2-6, and increased the net rate of 2-oxoisocaproate production as compared to control (no glucose) group in muscles from fed chicks. Glucose had no effect on these parameters of leucine degradation in muscles from 24-hr fasted chicks.
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1154
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Tolentino FA, Wu G. Diamond-dusted microspatula tips for vitreoretinal surgery. ARCHIVES OF OPHTHALMOLOGY (CHICAGO, ILL. : 1960) 1987; 105:1732-3. [PMID: 2825627 DOI: 10.1001/archopht.1987.01060120130040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We have developed a microsurgical spatula set consisting of four different tips and a universal handle. The set offers a range of tip angulation of 30 degrees, 45 degrees, 60 degrees, and 80 degrees. The bottom surfaces of the spatula tips are covered with fine diamond dust. The 30 degrees tip has a blunt and tapered end. All tips can be introduced through a conventional 20-gauge sclerotomy in a pars plana vitrectomy. The tips fit on a universal handle. The set has been used as a complement to vitreous forceps in dissecting and removing preretinal membrane.
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1155
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Wu G, Gao LD, Zhou CG, Liu MJ. [Surgical treatment of epilepsy with ECoG monitoring]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1987; 18:275-8. [PMID: 3119458] [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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1156
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Gomez R, Dauwe L, Haggerty H, Malamud E, Nikolic M, Hagopian S, Pifer A, Abrams R, Ares J, Goldberg H, Halliwell C, Margulies S, McLeod D, Salminen A, Solomon J, Wu G, Blessing S, Crittenden R, Draper P, Dzierba A, Heinz R, Krider J, Marshall T, Martin J, Sambamurti A, Smith P, Snyder A, Stewart C, Sulanke T, Zieminski A, Ellsworth R, Goodman J, Gupta S, Yodh G, Watts T, Abramov V, Antipov Y, Baldin B, Denisov S, Glebov V, Gorin Y, Kryshkin V, Petrukhin A, Polovnikov S, Sulyaev R. Measurement of the nuclear enhancement in high-Et and jet event production. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1987; 35:2736-2746. [PMID: 9957982 DOI: 10.1103/physrevd.35.2736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1157
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Wu G, Thompson JR. Ketone bodies inhibit leucine degradation in chick skeletal muscle. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1987; 19:937-43. [PMID: 3666283 DOI: 10.1016/0020-711x(87)90175-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
1. DL-beta-hydroxybutyrate (4 mM) increased the net rate of leucine transamination and the net rate of 2-oxoisocaproate (KIC) production in extensor digitorum communis muscles from fed chicks. 2. DL-beta-hydroxybutyrate at 1 and 4 mM inhibited leucine oxidative decarboxylation in muscles from fed chicks. 3. Acetoacetate at 1 and 4 mM inhibited leucine oxidative decarboxylation and total leucine oxidation, but increased net KIC production in muscles from fed chicks. 4. Both DL-beta-hydroxybutyrate and acetoacetate at 1 and 4 mM inhibited the net rate of leucine transamination and the rates of leucine oxidative decarboxylation and total leucine oxidation in muscles from 24-hr fasted chicks.
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1158
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Ho P, Wu G. Sorbents used for removal of urea in the system of artificial kidney. BIOMATERIALS, ARTIFICIAL CELLS, AND ARTIFICIAL ORGANS 1987; 15:199-205. [PMID: 3130113 DOI: 10.3109/10731198709118520] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Three copolymers were made from the suspension polymerization of methyl acrylate, divinyl benzene and triallyl isocyanurate; acrylamide and N,N'-methylene-bis-acrylamide; and styrene and divinyl benzene. These copolymers were then converted into derivatives of hydrazides through several steps. They were used as polymeric sorbents. They sorbed in situ a little bit less than 40 mg. of urea per gram of sorbent at 37 degrees C, pH = 7.0-7.4 and the percentage of urea in the buffer solution being 130 mg%. The sorption of urea was related to the specific surface area of the sorbent, temperature of sorption and time of sorption, concentration of urea, pH value of solution etc. In order to find out whether the above-prepared derivatives of hydrazide can be used clinically as polymeric sorbents in artificial kidney system, the junior author carried out experiments with patient's dialysate as imitated to hemodialysis. From the results, it indicates the sorbents might be used in artificial kidney system because they sorbed the urea from hemodialysate as much as that of the pure urea in a buffer solution.
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1159
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Wang KQ, Li ZG, Hao QL, He JL, Wu G, Chen BS, Xue H, Wang JM, Li XZ, Hu YM. [The characteristic transportation of cholesterol by serum lipoproteins and its role in anti-atherogenesis in Beijing duck]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1986; 8:88-95. [PMID: 2944650] [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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1160
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Hu YM, Xue H, Wu G. [Studies on the effects of lipoproteins and apoproteins on lipoprotein receptors. III. The comparison of normal and hyperlipidemic serum LDL in smooth muscle cells in the rabbit by the LDL receptor]. ZHONGHUA XIN XUE GUAN BING ZA ZHI 1985; 13:179-82, 239. [PMID: 4092597] [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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1161
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Hu YM, Xue H, Wu G, Wang KQ, Xia RY, An WM, Zhao SM. [Release of LDL from cell surface receptor by heparin and comparison of the binding ability of serum LDL between rabbit and man]. SHI YAN SHENG WU XUE BAO 1985; 18:311-6. [PMID: 3835757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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1162
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Wu G, Kim D, Oreopoulos DG. The efficacy and adequacy of continuous ambulatory peritoneal dialysis. THE ULSTER MEDICAL JOURNAL 1985; 54 Suppl:S48-61. [PMID: 3909582 PMCID: PMC2447969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Since it was introduced in 1976, continuous ambulatory peritoneal dialysis (CAPD) has won acceptance in many centres and it is now regarded as an important alternative to haemodialysis. CAPD patients have comparable and, in some circumstances, better survival than those on chronic haemodialysis. It is indicated particularly in patients with diabetes mellitus, cardiovascular instability and at the extremes of life. The success of kidney transplantation is similar in those maintained on CAPD and on haemodialysis. CAPD also achieves satisfactory physical and psychological rehabilitation, and the quality of life, including the level of sexual function, is similar during CAPD and haemodialysis. Women on CAPD menstruate more often than those on haemodialysis. CAPD provides adequate clearance of metabolic wastes, maintains fluid balance and ameliorates neurotoxic cognitive dysfunction. CAPD gives control of hypertension and anaemia which is superior to that on haemodialysis. Neuropathy remains stable but osteitis fibrosa seems to progress. CAPD is the most economical of the various forms of dialysis. We conclude that CAPD is an adequate form of replacement and should be made available in every nephrology centre providing treatment for patients with end-stage renal disease.
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1163
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Wu G, Katz A, Cardella C, Oreopoulos DG. Spontaneous remission of nephrotic syndrome in IgA glomerular disease. Am J Kidney Dis 1985; 6:96-9. [PMID: 4025333 DOI: 10.1016/s0272-6386(85)80148-7] [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: 01/08/2023]
Abstract
We report two cases of adult onset nephrotic syndrome with pathologic features of minimal change disease but a predominance of IgA in mesangial regions. Both cases underwent spontaneous remission despite an episode of recurrent nephrotic syndrome in one patient. The relationship of the glomerular disease to minimal change and IgA nephritis is discussed.
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1164
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Saber MA, Wu G. In-vitro catabolism of L-histidine by adult Schistosoma mansoni. JOURNAL OF THE EGYPTIAN SOCIETY OF PARASITOLOGY 1985; 15:29-39. [PMID: 4056475] [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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1165
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Hu YM, Xue H, Wu G, Wang KQ. [Studies on the effect of lipoproteins and apoproteins on lipoprotein receptors. IV. Comparison of the physico-chemical properties of LDL between normal and hyperlipidemic rabbit serum]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1985; 7:182-6. [PMID: 3011287] [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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1166
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Wu G, Cotlier E, Brodie S. A carrier state of X-linked juvenile retinoschisis. OPHTHALMIC PAEDIATRICS AND GENETICS 1985; 5:13-7. [PMID: 4058866 DOI: 10.3109/13816818509007850] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The carrier state of X-linked juvenile retinoschisis has not been known to be associated with any fundus abnormalities. We report a case where there are funduscopic changes and mild visual acuity changes in one eye of a carrier.
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1167
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Schilling H, Wu G, Mitwalli A. Four 3-Liter Exchanges: An Ideal Dialysis Scheme for Large Anuric Patients. Perit Dial Int 1985. [DOI: 10.1177/089686088500500126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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1168
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Wu G, Khanna R, Vas SI, Digenis G, Oreopoulos DG. Continuous ambulatory peritoneal dialysis: no longer experimental. CANADIAN MEDICAL ASSOCIATION JOURNAL 1984; 130:699-707. [PMID: 6697277 PMCID: PMC1875924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Many patients with end-stage renal disease have now been maintained for 5 years or more with continuous ambulatory peritoneal dialysis (CAPD). Viewed initially as an experimental alternative to be used only when hemodialysis was not feasible, CAPD is now seen as the treatment of choice in an increasing number of situations. CAPD is suitable for self-care. The main concern in the early years--peritonitis--is now less frightening and less frequent (one episode occurring every 18 patient-months as compared with every 8 initially), and this has allowed chronic complications of CAPD, such as malnutrition and loss of the peritoneum's capacity for ultrafiltration, to come to light. As would be expected, among patients of advanced age and those who have heart disease or diabetes, survival rates tend to be lower than among other CAPD patients. However, hypertension seems to be more easily controlled, pre-existing anemia can be significantly ameliorated, and young children grow more normally than they do with hemodialysis. Diabetes-related changes in vision stabilize in most CAPD patients, and control of the blood glucose level is good; insulin is administered intraperitoneally. CAPD is thus showing itself to be a feasible form of long-term treatment for end-stage renal disease.
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1169
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Kim D, Tapson J, Wu G, Khanna R, Vas SI, Oreopoulos DG. Staph aureus peritonitis in patients on continuous ambulatory peritoneal dialysis. TRANSACTIONS - AMERICAN SOCIETY FOR ARTIFICIAL INTERNAL ORGANS 1984; 30:494-497. [PMID: 6533929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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1170
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Digenis GE, Rabinovich S, Medline A, Rodella H, Wu G, Oreopoulos DG. Electron microscopic study of the peritoneal kinetics of iron dextran during peritoneal dialysis in the rabbit. Nephron Clin Pract 1984; 37:108-12. [PMID: 6728083 DOI: 10.1159/000183224] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Iron dextran, an electron-dense tracer, was given intravenously (100 mg of iron/100 g of body weight) to 8 normal rabbits to study its movement from the plasma to the peritoneal cavity during peritoneal dialysis. The dialysate infused at 75 ml/kg contained 1.5 g/dl of glucose in 4 animals and 4.25 g/dl in the remainder. Peritoneal dialysis was discontinued and the peritoneum was fixed in vivo at various times (20-120 min) after the injection of the iron dextran. Large amounts of tracer were detected in the effluent after draining the peritoneal cavity. Electron microscopic examination of the mesentery showed particles of iron dextran in the endothelial cells of small vessels (capillaries and venules) the interstitium and the mesothelial cells adjacent to vessels irrespective of the dialysate concentration or duration of dialysis. Tracer was not clearly demonstrated in the interendothelial or intermesothelial spaces. In the mesothelial cells, the particles were found exclusively in (small, elongated or large) vesicles, while in the endothelial cells they were both in vesicles and free in the cytoplasm. Our findings suggest that during the 20- to 120-min period after intravenous administration, the intracellular transport of iron dextran, depends on either moving vesicles or the presence of pre-existing tunnels in the mesothelial cells of rabbit mesentery.
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1171
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Khanna R, Wu G, Vas SI, Digenis G, Oreopoulos DG. Update on continuous ambulatory peritoneal dialysis. LA RICERCA IN CLINICA E IN LABORATORIO 1983; 13:381-95. [PMID: 6658301 DOI: 10.1007/bf02906919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
By now many patients have been successfully maintained on CAPD for five years or more, thus demonstrating that CAPD is a viable long-term treatment for end-stage renal disease. Peritonitis--the main concern of the earlier years--is now a less frightening complication. We know better how to treat peritonitis and its incidence has decreased from one episode every 8 months initially to one episode every 18 months now. In addition, several innovations, which have been or soon will be introduced, promise to decrease the frequency of peritonitis to an even lower rate. The problem of peritonitis is now being replaced by the chronic complications of CAPD, predominantly malnutrition and decrease in peritoneal ultrafiltration. CAPD has become an important adjunct in the treatment of children with ESRD, especially the very young. Even though not normal, their growth on CAPD is better than that of children on hemodialysis and as good as that after a successful transplant. CAPD has become a promising treatment for the diabetic with ESRD. This experience has stimulated interest and research in the role of intraperitoneal administration of insulin for blood glucose control. With the present worldwide experience of CAPD, this treatment has ceased to be experimental. A percentage of patients requiring dialysis will be better off on CAPD than on hemodialysis. Even though this percentage will vary among various countries, the nephrologist who wants to provide the best treatment for each patient must be well experienced in and have all treatments at his disposal including CAPD.
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1172
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1173
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Abstract
A two-stage arthroplasty technique was used to treat an isolated fibrous ankylosis that developed in the index metacarpophalangeal joint of a 14-year-old boy after a rattlesnake bite. The first stage consisted of a minimal joint resection combined with rib perichondrial grafts to resurface the joint. The second stage, performed 5 months later, consisted of a capsulotomy and removal of a silicone membrane left within the joint to separate the grafts. Biopsy of the joint surfaces revealed the presence of hyaline-like cartilage. Nearly normal pain-free motion was restored. Follow-up now exceeds 30 months.
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1174
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Chen GY, Yi DS, Li WS, Chen SZ, Wu G. Adhesion-precipitation technic for Schistosome cercariae recovery from natural waters. Chin Med J (Engl) 1982; 95:762-4. [PMID: 6817982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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1175
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Hozumi N, Wu G, Murialdo H, Baumal R, Mosmann T, Winberry L, Marks A. Arrangement of lambda light chain genes in mutant clones of the MOPC 315 mouse myeloma cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 1982; 129:260-6. [PMID: 6806362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The synthesis of lambda light chains and the arrangement of the lambda-chain genes was examined in cells of the mouse myeloma MOPC 315, which is an alpha lambda 2 producer, and in several mutants derived from it. The mutants produce lambda 2 chains only (MOPC 315.26, MOPC 315.34, and MOPC 315.37) or fail to produce alpha and lambda 2 chains (MOPC 315.25 and MOPC 315.36). Messenger RNA from the lambda 2 chain-producing cells directed the synthesis of a lambda 2 chain precursor and a fragment of the lambda 1 chain (lambda 1 F) in a wheat embryo cellfree system, whereas mRNA from the cells that do not produce lambda 2 chains directed the synthesis of lambda 1 F only. DNA from the parental MOPC 315 cells and from the lambda 2 chain-producing cells contained discrete EcoRI restriction fragments coding for rearranged lambda 1 and lambda 23 chain genes and their respective germ-line V and J-C regions. DNA from the no-Ig-producing cells contained fragments coding for the rearranged lambda 1 chain gene and the germ-line V lambda 2 region, but it lacked the sequences coding for the rearranged lambda 2 chain gene and the germ-line V lambda 1 and J-C lambda 1 regions. These results suggest that rearrangements of the lambda 1 and lambda 2 chain genes occur on different chromosomes in MOPC 315 cells and imply that rearrangements of the lambda 1 and lambda 2 chain genes on the same chromosome may be mutually exclusive.
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1176
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Hozumi N, Wu G, Murialdo H, Baumal R, Mosmann T, Winberry L, Marks A. Arrangement of lambda light chain genes in mutant clones of the MOPC 315 mouse myeloma cells. THE JOURNAL OF IMMUNOLOGY 1982. [DOI: 10.4049/jimmunol.129.1.260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
The synthesis of lambda light chains and the arrangement of the lambda-chain genes was examined in cells of the mouse myeloma MOPC 315, which is an alpha lambda 2 producer, and in several mutants derived from it. The mutants produce lambda 2 chains only (MOPC 315.26, MOPC 315.34, and MOPC 315.37) or fail to produce alpha and lambda 2 chains (MOPC 315.25 and MOPC 315.36). Messenger RNA from the lambda 2 chain-producing cells directed the synthesis of a lambda 2 chain precursor and a fragment of the lambda 1 chain (lambda 1 F) in a wheat embryo cellfree system, whereas mRNA from the cells that do not produce lambda 2 chains directed the synthesis of lambda 1 F only. DNA from the parental MOPC 315 cells and from the lambda 2 chain-producing cells contained discrete EcoRI restriction fragments coding for rearranged lambda 1 and lambda 23 chain genes and their respective germ-line V and J-C regions. DNA from the no-Ig-producing cells contained fragments coding for the rearranged lambda 1 chain gene and the germ-line V lambda 2 region, but it lacked the sequences coding for the rearranged lambda 2 chain gene and the germ-line V lambda 1 and J-C lambda 1 regions. These results suggest that rearrangements of the lambda 1 and lambda 2 chain genes occur on different chromosomes in MOPC 315 cells and imply that rearrangements of the lambda 1 and lambda 2 chain genes on the same chromosome may be mutually exclusive.
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1177
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Wu G, Whitehouse GH, Littler TR. The demonstration of lymphatic channels on wrist arthrography in rheumatoid disease with particular reference to associated lymphoedema. RHEUMATOLOGY AND REHABILITATION 1982; 21:65-71. [PMID: 7079658 DOI: 10.1093/rheumatology/21.2.65] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Delineation of lymphatic vessels is a frequent finding in arthrograms of rheumatoid joints. Arthrography of the rheumatoid wrist when associated with oedema of the upper limb reveals a characteristic pattern consistent with lymphatic obstruction. In our opinion, these findings may be regarded as further evidence in favour of lymphatic obstruction as the cause of peripheral oedema in rheumatoid arthritis. The syndrome appears to be a separate entity from idiopathic oedema of women.
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1178
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Abstract
This is a case report of an anterior chamber hemorrhage noted two days after spontaneous delivery in a full-term infant with perinatal asphyxia. There was probably vitreous hemorrhage in the same eye and extensive retinal hemorrhages in both eyes. By two weeks, the hyphema and vitreous hemorrhage had resolved and the retinal hemorrhages largely cleared.
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1179
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Chowdhury JR, Chowdhury NR, Wu G, Shouval R, Arias IM. Bilirubin mono- and diglucuronide formation by human liver in vitro: assay by high-pressure liquid chromatography. Hepatology 1981; 1:622-7. [PMID: 6796486 DOI: 10.1002/hep.1840010610] [Citation(s) in RCA: 57] [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: 01/21/2023]
Abstract
Bilirubin diglucuronide, the major pigment in human bile is formed in two steps. Bilirubin is converted to bilirubin monoglucuronide by transfer of the glucuronosyl moiety of uridine diphosphoglucuronic acid catalyzed by the microsomal enzyme, uridine diphosphoglucuronate glucuraonosyl transferase (UDP glucuronyl transferase, EC 2.4.1.17). Bilirubin monoglucuaronide is converted to bilirubin diglucuronide in vitro by two enzymatic mechanisms: (a) UDP glucuronyl transferase-mediated transfer of a second mole of glucuronic acid form UDP-glucuronic acid to bilirubin monoglucuronide; (b) dismutation of 2 moles of bilirubin monoglucuronide to 1 mole of bilirubin diglucuronide and 1 mole of unconjugated bilirubin, catalyzed by bilirubin monoglucuronide dismutase (bilirubin glucuronoside glucuronosyl transferase EC 2.4.1.95). Assay methods for the three enzymatic mechanisms in human liver homogenate by high-pressure liquid chromatography analysis of underivatized bilirubin tetrapyrroles have been developed. UDP glucuronyl transferase was activated in five human liver homogenates with digitonin, Triton X-100, or UDP-N-acetylglucosamine. Greatest activation was observed with Triton X-100. The pH optimum for conversion of bilirubin to bilirubin monoglucuronide was 7.4, and UDP glucuronyl transferase activity was 625 +/- 51 nmoles per 20 min per gm liver. At high initial bilirubin concentrations (342 microM), the product of UDP glucuronyl transferase assay with bilirubin as substrate was predominantly bilirubin monoglucuronide. At lower initial bilirubin concentrations (6.5 to 34 microM), up to 15% bilirubin diglucuronide was formed. Glucuronyl transferase-mediated UDP glucuronic acid-dependent conversion of bilirubin monoglucuronide to diglucuronide was assayed using UDP-14-C-glucuronic acid. The pH optimum was 7.4, and the rate was 21 +/- 7 nmoles per gm liver per 20 min. The rate of bilirubin diglucuronide formation by enzymatic dismutation of bilirubin monoglucuronide was 470 +/- 112 nmoles per gm liver per min. The pH optimum was 6.6. The products of enzymatic dismutation were of the IX alpha configuration.
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1180
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Wu G, Wada O. [Purification and biological significance of a specific chromium binding substance (A low molecular weight chromium-binding substance) found in organs of mammals (author's transl)]. Nihon Eiseigaku Zasshi 1981; 36:621-9. [PMID: 7328849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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1181
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Wu G. Faithful transcription of adenovirus 5.5 S RNA gene by RNA polymerase III in a human KB cell-free extract. J Biol Chem 1980; 255:251-8. [PMID: 7350157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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1182
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Wu G. Faithful transcription of adenovirus 5.5 S RNA gene by RNA polymerase III in a human KB cell-free extract. J Biol Chem 1980. [DOI: 10.1016/s0021-9258(19)86291-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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1183
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Soerens D, Sandrin J, Ungemach F, Mokry P, Wu G, Yamanaka E, Hutchins L, DiPierro M, Cool J. Additions and Corrections: Study of the Pictet-Spengler Reaction in Aprotic Media: Synthesis of the β-Galactosidase Inhibitor, Pyridinolol. J Org Chem 1979. [DOI: 10.1021/jo01335a608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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1184
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Wu G, Calamel PM, Shedd DP. THe hazards of injecting local anesthetic solutions with epinephrine into flaps: experimental study. Plast Reconstr Surg 1978; 62:396-403. [PMID: 358228 DOI: 10.1097/00006534-197809000-00010] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In a study using paired longitudinal flaps on the back of the rat, we found evidence to support the findings of previous investigators regarding the toxic effects of injecting local anesthetic solutions containing epinephrine into delayed flaps. Epinephrine concentrations of 1:200,000 and 1:400,000 were demonstrated to significantly increase losses in these flaps. Epinephrine concentrations of 1:100,000, 1:200,000, and 1:400,000 were not demonstrated to be harmful to undelayed flaps, in the dosages used.
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1185
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Boyer JS, Wu G. Auxin increases the hydraulic conductivity of auxin-sensitive hypocotyl tissue. PLANTA 1978; 139:227-237. [PMID: 24414264 DOI: 10.1007/bf00388634] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/1977] [Accepted: 12/16/1977] [Indexed: 06/03/2023]
Abstract
The ability of water to enter the cells of growing hypocotyl tissue was determined in etiolated soybean (Glycine max (L.) Merr.) seedlings. Water uptake was restricted to that for cell enlargement, and the seedlings were kept intact insofar as possible. Tissue water potentials (ψ w) were measured at thermodynamic equilibrium with an isopiestic thermocouple psychrometer. ψ wwas below the water potential of the environment by as much as 3.1 bars when the tissue was enlarging rapidly. However, ψ w was similar to the water potential of the environment when cell enlargement was not occurring. The low ψ w in enlarging tissue indicates that there was a low conductivity for water entering the cells.The ability of water to enter the enlarging cells was defined as the apparent hydraulic conductivity of the tissue (L'p). Despite the low L'p of growing cells, L'p decreased further as cell enlargement decreased when intact hypocotyl tissue was deprived of endogenous auxin (indole-3-acetic acid) by removal of the hypocotyl hook. Cell enlargement resumed and L'p increased when auxin was resupplied exogenously. The auxin-induced increase in L'p was correlated with the magnitude of the growth enhancement caused by auxin, and it was observed during the earliest phase of the growth response to auxin. The increase in L'p appeared to be caused by an increase in the hydraulic conductivity of the cell protoplasm, since other factors contributing to L'p remained constant. The rapidity of the response is consistent with a cellular site of action at the plasmalemma, although other sites are not precluded.Because the experiments involved only short times, auxin-induced changes in cell enlargement could not be attributed to changes in cell osmotic potentials. Neither could they be attributed to changes in turgor, which increased when the rate of enlargement decreased. Rather, auxin appeared to act by altering the extensibility of the cell walls and by simultaneously altering the ability of water to enter the growing cells under a given water potential gradient. The hydraulic conductivity and extensibility of the cell walls appeared to contribute about equally to the control of the growth rate of the hypocotyls.
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1186
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Minami trt, kaplan EN, Wu G, Jobe RP. Velopharyngeal incompetence without overt cleft palate. A collective review and experience with 98 patients. Plast Reconstr Surg 1975; 55:573-87. [PMID: 1144534 DOI: 10.1097/00006534-197505000-00007] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Our experience in patients with velopharyngeal incompetence but without overt cleft palate is described, and the literature is reviewed.
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1187
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Frater RW, Silverstein M, Epstein W, Lipson D, Wu G, Yellin E. The mode of action of the natural mitral valve. BULLETIN OF THE NEW YORK ACADEMY OF MEDICINE 1971; 47:1224-5. [PMID: 5286457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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1188
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Greenburg AG, Dreisin RB, Wu G, Kittle CF. Isoproterenol, hemodynamics and acid-base alterations. ARCHIVES OF SURGERY (CHICAGO, ILL. : 1960) 1969; 99:744-9. [PMID: 5370198 DOI: 10.1001/archsurg.1969.01340180068014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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1189
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Greenburg AG, Wu G, Dreisin R, Kittle CF. Pulmonary recirculation: effects on arterial oxygen saturation. ARCHIVES OF SURGERY (CHICAGO, ILL. : 1960) 1969; 99:344-345. [PMID: 5798425 DOI: 10.1001/archsurg.1969.01340150052008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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