701
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Lopez A, Vial R, Gremillion L, Bell L. Automated simultaneous turbidimetric determination of cholesterol in beta- and pre-beta-lipoproteins. Clin Chem 1971; 17:994-7. [PMID: 5095155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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702
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Lopez A, Vial R, Gremillion L, Bell L. Automated Simultaneous Turbidimetric Determination of Cholesterol in β- and pre-β-Lipoproteins. Clin Chem 1971. [DOI: 10.1093/clinchem/17.10.994] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
An automated method is described for simultaneously determining cholesterol in serum β- and pre-β-lipoprotein fractions. This fast, reproducible, accurate method depends on the ability of β- and pre-β-lipoproteins to form insoluble complexes with polyanionic polysaccharides such as heparin. Values obtained by this method and by similar manual methods described in the literature agree well. This method is extremely useful in mass screening for hyperlipidemias; in certain cases it may be more useful than the determination of only cholesterol or triglycerides.
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703
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Blackard WG, Hull EW, Lopez A. Effect of lipids on growth hormone secretion in humans. J Clin Invest 1971; 50:1439-43. [PMID: 5090059 PMCID: PMC292082 DOI: 10.1172/jci106627] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
To determine the effect of elevations of plasma lipids on growth hormone secretion in humans, paired insulin hypoglycemia tests and paired arginine infusion tests were performed on eight and six normal female volunteers respectively. On 1 of the 2 test days for each growth hormone stimulus, subjects were given 60 g corn oil (Lipomul) 3 hr before testing followed by intravenous heparin (5000 U) at the time of insulin or arginine administration. Lipomul plus heparin administration inhibited both insulin- and arginine-induced plasma HGH elevations with almost complete suppression of the response to arginine. The plasma HGH (human growth hormone) inhibition was associated with elevation in plasma triglycerides and inhibition of plasma FFA (free fatty acid) depression after insulin or arginine. Neither the hypoglycemic response to insulin nor the blood glucose and plasma immunoreactive-insulin responses to arginine were altered by Lipomul plus heparin administration. In four additional subjects in whom Lipomul was given without heparin, the elevated plasma triglyceride values were not associated with suppression of arginine-induced plasma HGH elevations. In the same four subjects, heparin administration without Lipomul neither suppressed arginine-induced plasma HGH elevations nor prevented the depression in plasma FFA after arginine as much as when Lipomul plus heparin had been given. These latter observations suggest that the elevation in plasma FFA was responsible for suppression of growth hormone secretion by Lipomul plus heparin. These studies indicate a possible role of plasma FFA in regulation of growth hormone secretion.
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704
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705
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Latorre JJ, Doberti A, Lopez A. [Mikity-Wilson syndrome]. REVISTA CHILENA DE PEDIATRIA 1971; 42:261-3. [PMID: 5097298] [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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706
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Contreras MC, Lopez A, Douglas R. [The role of the thyroid gland in the arterial lipolytic activity in rabbits on atherogenic diets]. ARCHIVOS DE BIOLOGIA Y MEDICINA EXPERIMENTALES 1971; 8:8-12. [PMID: 5173057] [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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707
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Berenson GS, Srinivasan SR, Pargaonkar PS, Lindsey S, Plavidal F, Radhakrishnamurthy B, Dalferes ER, Lopez A, Dugan FA. The detection of individuals prone to coronary artery disease--a screening program conducted on medical students. THE JOURNAL OF THE LOUISIANA STATE MEDICAL SOCIETY : OFFICIAL ORGAN OF THE LOUISIANA STATE MEDICAL SOCIETY 1971; 123:49-56. [PMID: 5573242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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708
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Lopez A, Srinivasan SR, Dugan FA, Radhakrishnamurthy B, Berenson GS. Detection of subtle abnormalities of serum beta- and pre-beta-lipoproteins in "normal" individuals by turbidimetric and electrophoretic methods. Clin Chim Acta 1971; 31:123-32. [PMID: 5544043 DOI: 10.1016/0009-8981(71)90369-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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709
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Lopez A, Good EI, Krehl WA. Weight loss and lipid changes in overweight subjects. GERONTOLOGIA CLINICA 1971; 13:171-80. [PMID: 5116151 DOI: 10.1159/000245336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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710
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Srinivasan SR, Lopez A, Radhakrishnamurthy B, Berenson GS. Complexing of serum pre-beta and beta-lipoproteins and acid mucopolysaccharides. Atherosclerosis 1970; 12:321-34. [PMID: 5497520 DOI: 10.1016/0021-9150(70)90036-5] [Citation(s) in RCA: 125] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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711
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Loaharanu P, Lopez A. Bacteriological and shelf-life characteristics of canned, pasteurized crab cake mix. Appl Microbiol 1970; 19:734-41. [PMID: 5422305 PMCID: PMC376779 DOI: 10.1128/am.19.5.734-741.1970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The bacteriological spoilage characteristics of a canned, pasteurized crab cake mix product stored at various temperatures were investigated. A large number of bacteria, both mesophilic and psychrophilic, survived the pasteurization process. Bacillus and Micrococcus were found to predominate when the product was stored at 30 C (86 F) and 18 C (64 F), whereas Alcaligenes predominated at 2 C (36 F). The product was found to be free of Escherichia coli. Bacterial counts, trimethylamine nitrogen, volatile reducing substances, and ammonia determinations were evaluated as indices of quality for the product. Close correlation was observed between bacterial counts, volatile reducing substance values, and organoleptic tests when the product was stored at 30 C (86 F). The shelf-life of the product was approximately 6 months at 2 C (36 F), 4 days at 18 C (64 F), and 27 hr at 30 C (86 F).
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712
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Nichol L, Lopez A, Robertson A, Prestwich W, Kennett T. A versatile tangential irradiation facility. ACTA ACUST UNITED AC 1970. [DOI: 10.1016/0029-554x(70)90556-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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713
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Piguet B, Lepoivre M, Commissionat Y, Coumel J, Lopez A, Thibault JC. [Physiopathological syndrome of the upper maxillary nerve and its branches with facial ichthiosiform hyperkeratosis. (2 cases)]. REVUE DE STOMATOLOGIE ET DE CHIRURGIE MAXILLO-FACIALE 1969; 70:561-71. [PMID: 5264264] [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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714
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Crawford MA, Hansen IL, Lopez A. The excretion of 3-hydroxyanthranilic and quinolinic acid in Uganda Africans. Br J Cancer 1969; 23:644-54. [PMID: 4243334 PMCID: PMC2008413 DOI: 10.1038/bjc.1969.80] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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715
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Lopez A, Commissionat Y, Lepoivre M. [Maxillary sinusitis of dental origin]. LES CAHIERS DU COLLEGE DE MEDECINE DES HOPITAUX DE PARIS 1969; 10:259-67. [PMID: 5398289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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716
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717
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Deykin D, Cochios F, DeCamp G, Lopez A. Hepatic removal of activated factor X by the perfused rabbit liver. THE AMERICAN JOURNAL OF PHYSIOLOGY 1968; 214:414-9. [PMID: 5639568 DOI: 10.1152/ajplegacy.1968.214.2.414] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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718
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719
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Lopez A, Krehl WA. A possible interrelation between glucose-6-phosphate dehydrogenase and dehydroepiandrosterone in obesity. Lancet 1967; 2:485-7. [PMID: 4166407 DOI: 10.1016/s0140-6736(67)91654-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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720
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Lopez A, Krehl WA, Hodges RE. Relationship between total cholesterol and cholesteryl esters with age in human blood plasma. Am J Clin Nutr 1967; 20:808-15. [PMID: 6051145 DOI: 10.1093/ajcn/20.8.808] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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721
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Buchanan H, Phillips JM, Lopez A, Moore WF. Temperature-sensing telemetry system for unrestrained rhesus monkeys (Macaca mulatta). SAM-TR-67-63. [TECHNICAL REPORT] SAM-TR. USAF SCHOOL OF AEROSPACE MEDICINE 1967:1-11. [PMID: 4967969] [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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722
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Lopez A. Some notes on fertility problems in a colombian semi-urban community. Demography 1967; 4:453-63. [PMID: 21318663 DOI: 10.2307/2060292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Significant efforts in the field of study and control of reproductive habits of the Colombian population have been made in the last few years by local medical groups. This article attempts to illustrate how the data obtained in this program can be meaningfully exploited from the demographic point of view. Although data available at the time of writing did not comply with the principles of scientific sampling procedures, it is thought that such studies can throw some light on particular issues, such as the patterns of mating, the effect of contraception on birth spacing among married couples, and the relation of fecundity to frequency of coitus. This article deals with some methodological issues which center around these problems.
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723
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Lopez A, Krehl WA, Good E. Influence of time and temperature on ascorbic acid stability. JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION 1967; 50:308-10. [PMID: 6021193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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724
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Krehl WA, Lopez A, Good EI, Hodges RE. Some metabolic changes induced by low carbohydrate diets. Am J Clin Nutr 1967; 20:139-48. [PMID: 6020514 DOI: 10.1093/ajcn/20.2.139] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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725
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Hodges RE, Krehl WA, Stone DB, Lopez A. Dietary carbohydrates and low cholesterol diets: effects on serum lipids on man. Am J Clin Nutr 1967; 20:198-208. [PMID: 6020521 DOI: 10.1093/ajcn/20.2.198] [Citation(s) in RCA: 67] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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726
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Lopez A, Krehl WA, Hodges RE, Good EI. Relationship between food consumption and mortality from atherosclerotic heart disease in Europe. Am J Clin Nutr 1966; 19:361-9. [PMID: 5923594 DOI: 10.1093/ajcn/19.5.361] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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727
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Abstract
"True" pulmonary blood volume has been determined by three indicator-dilution methods in 96 subjects. In two methods a right or left ventricular mixing chamber is interposed between the injection and sampling sites while in the third such a mixing chamber is absent. The results strongly suggest that a ventricular mixing chamber is essential for valid determination of true pulmonary blood volume.
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728
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Lopez A, Hodges RE, Krehl WA. Some interesting relationships between dietary carbohydrates and serum cholesterol. Am J Clin Nutr 1966; 18:149-53. [PMID: 4951499 DOI: 10.1093/ajcn/18.2.149] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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729
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Samet P, Bernstein WH, Levine S, Lopez A. Hemodynamic effects of tachycardias produced by atrial and ventricular pacing. Am J Med 1965; 39:905-10. [PMID: 5322354 DOI: 10.1016/0002-9343(65)90112-9] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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730
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Carleton RO, Lopez A, Freedman R, Kiser CV. Fertility Trends and Differentials in Latin America. ACTA ACUST UNITED AC 1965. [DOI: 10.2307/3348915] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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731
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Lopez A. Spiders Discharged from the Eye. Hysteric Monomania. West J Med 1843; 7:47-9. [DOI: 10.1136/bmj.s1-7.160.47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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