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READ CP, ROTHMAN H, SIMMONS JE. STUDIES ON MEMBRANE TRANSPORT, WITH SPECIAL REFERENCE TO PARASITE-HOST INTEGRATION*. Ann N Y Acad Sci 2006; 113:154-205. [PMID: 14088693 DOI: 10.1111/j.1749-6632.1963.tb40664.x] [Citation(s) in RCA: 149] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Crane RK. The gradient hypothesis and other models of carrier-mediated active transport. Rev Physiol Biochem Pharmacol 2005; 78:99-159. [PMID: 322241 DOI: 10.1007/bfb0027722] [Citation(s) in RCA: 253] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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MANCHESTER KL. Insulin and incorporation of amino acids into protein of muscle. Cellular amino acid levels and aminoisobutyric acid uptake. Biochem J 1998; 81:135-47. [PMID: 14469128 PMCID: PMC1243308 DOI: 10.1042/bj0810135] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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FERNANDO MA, WONG HA. METABOLISM OF HOOKWORMS. II. GLUCOSE METABOLISM AND GLYCOGEN SYNTHESIS IN ADULT FEMALE ANCYLOSTOMA CANINUM. Exp Parasitol 1996; 15:284-92. [PMID: 14201360 DOI: 10.1016/0014-4894(64)90024-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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BROWN AD. ASPECTS OF BACTERIAL RESPONSE TO THE IONIC ENVIRONMENT. BACTERIOLOGICAL REVIEWS 1996; 28:296-329. [PMID: 14220657 PMCID: PMC441227 DOI: 10.1128/br.28.3.296-329.1964] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Scriver CR, Tenenhouse HS. Mendelian Phenotypes as “Probes” of Renal Transport Systems for Amino Acids and Phosphate. Compr Physiol 1992. [DOI: 10.1002/cphy.cp080242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Lever JE. The use of membrane vesicles in transport studies. CRC CRITICAL REVIEWS IN BIOCHEMISTRY 1980; 7:187-246. [PMID: 6243082 DOI: 10.3109/10409238009105462] [Citation(s) in RCA: 61] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Transport-competent plasma membrane vesicles isolated from mammalian cells provide a system to investigate mechanisms and regulation of nutrient and ion transport systems. The characteristics of membrane vesicle systems to study transport in erythrocytes, renal and epithelial membranes, Ehrlich ascites cells, and mouse fibroblasts are discussed. Studies of Na+-stimulated and Na+-independent amino acid and glucose transport in these systems are evaluated, with emphasis on experimental verification of concepts stated in the Na+ gradient hypothesis. Nucleoside, phosphate, and calcium transport systems in plasma membrane vesicles from mouse fibroblast cultures are discussed. Also, current biochemical approaches to investigate mechanisms of regulation of nutrient transport systems by hormones or cellular proliferative state are described.
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Skovsgaard T. Carrier-mediated transport of daunorubicin, adriamycin, and rubidazone in Ehrlich ascites tumour cells. Biochem Pharmacol 1978; 27:1221-7. [PMID: 567991 DOI: 10.1016/0006-2952(78)90455-0] [Citation(s) in RCA: 92] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Stillwell W. Facilitated diffusion of amino acids across bimolecular lipid membranes as a model for selective accumulation of amino acids in a primordial protocell. Biosystems 1976; 8:111-7. [PMID: 1016694 DOI: 10.1016/0303-2647(76)90014-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Scriver CR, McInnes RR, Mohyuddin F. Role of epithelial architecture and intracellular metabolism in proline uptake and transtubular reclamation in PRO/re mouse kidney. Proc Natl Acad Sci U S A 1975; 72:1431-5. [PMID: 1055415 PMCID: PMC432549 DOI: 10.1073/pnas.72.4.1431] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The homozygous PRO/Re mouse has less than 1 percent of the very high proline oxidase activity that characterizes normal kidney cortex. In PRO/Re mouse the endogenous proline concentration is eight times normal in plasma and four times normal in kidney cortex cell, but 50 times normal in urine. The integrity of the membrane transport systems for proline uptake at the antiluminal surface of absorbing epithelium is retained in PRO/Re kidney, as determined by the slice method. Clearance studies in vivo under steady-state conditions indicate that the integrity of the luminal uptake system shared by glycine and proline, and serving proline absorption, is also intact. The exaggerated renal clearance of proline in PRO/Re mice (50 times normal) is explained when its raised intracellular concentration, caused by impaired proline oxidation, is considered. Backflux into urine flowing down the nephron will occur under these conditions, thus impairing net reclamation of proline in PRO/Re kidney. The findings reveal that membrane transport and intracellular metabolism of a substrate are, indeed, independent functions, but that metabolism of a substance can influence its transcellular transport.
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Tenenhouse HS, Scriver CR. Orthophosphate transport in the erythrocyte of normal subjects and of patients with X-linked hypophosphatemia. J Clin Invest 1975; 55:644-54. [PMID: 1117070 PMCID: PMC301793 DOI: 10.1172/jci107972] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
We have examined the mechanism of TCA-soluble orthophosphate (Pi) transfer across the membrane of mature human erythrocytes in normal subjects and in patients with X-linked hypophosphatemia (X-LH). The studies were carried out largely at pH 7.4 and 37 degrees C, in partial stimulation of conditions in vivo. (a) At physiological concentrations (1-2 mM) Pi enters the intact normal erythrocyte down its chemical gradient and under no conditions could we identify a steady-state trans-membrane gradient for Pi greater than 0.6. Calculations of the phosphate anion distribution ratio using the Nernst equation yield theoretical values that closely approximate observed values. (b) Glycolytic inhibitors have little effect on total entry of 32Pi inti erythrocytes but they do affect the intracellular distribution of Pi. In the presence of iodoacetamide, label accumulates almost exclusively in the orthophosphate pool and less than 1% enters the organic phosphate pool. (c) Specific activity measurements in unblocked cells indicate that Pi anion equilibrates first with its intracellular Pi pool. These initial findings imply that neither group translocation, nor energy coupling, influence Pi permeation into the human erythrocytes. (d) The relationship between 32P entry and extracellular Pi concentration is parabolic in the presence of chloride, and linear in the presence of sulfate. The kinetics of concentration dependent entrance cannot be examined and saturability of Pi entry cannot be identified under these conditions. (e) The competitive inhibitor arsenate partially inhibits the initial rate and steady-state flux of orthophosphate in erythrocytes treated with iodoacetamide to inhibit glycolysis. However, a significant portion of Pi transport escapes arsenate inhibition. (f) Activation energies for Pi entry, in nonglycolizing erythrocytes are much higher than those required by simple diffusion in an aqueous system. (g) Neither the inward or outward movement of Pi is modulated by trans-phosphate. These latter findings suggest that transport of phosphate across the human erythrocyte is compatible with slow facilitated diffusion with symmetry for influex and efflux. The transmembrane chemical distribution ratio, and the equilibrium flux of Pi were not different from normal in the X-LH erythrocyte. Nor did the extracellular Pi concentration, arsenate, or temperature affect Pi entry differently in the two types of cells. We dedjce that different gene products serve the diffusional type of Pi transport in the erythrocyte membrane and the saturable component of transepithelial absorption in the gut and kidney. Only the latter is affected by the X-LH mutation. The former is apparently present not only in erythrocytes but also in epithelial tissue, where it can serve the absorption of pharmacologic amounts of Pi in the therapeutic repair of the depleted phosphate pools in X-LH.
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Stillwell W, Winter HC. The diffusion of glycine and N-substituted glycines across bimolecular lipid membranes. Biochem Biophys Res Commun 1973; 54:1437-43. [PMID: 4754721 DOI: 10.1016/0006-291x(73)91147-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Asatoor AM, Chadha AK, Dawson IM, Milne MD, Prosser DI. The effect of pyridoxine deficiency on intestinal absorption of amino acids and peptides in the rat. Br J Nutr 1972; 28:417-23. [PMID: 5085700 DOI: 10.1079/bjn19720051] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Evans MJ, Stephens RJ, Cabral LJ, Freeman G. Electron Microscopic Study of Cadmium Nephrotoxicity in the Rat. ACTA ACUST UNITED AC 1972. [DOI: 10.1080/00039896.1972.10666072] [Citation(s) in RCA: 47] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Shah NS, Himwich HE. A comparative study of mescaline and 3,4-dimethoxy-phenylethylamine in isolated brain mitochondria and brain homogenate. Brain Res 1971; 34:163-70. [PMID: 5124914 DOI: 10.1016/0006-8993(71)90357-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Saifer A. Rapid screening methods for the detection of inherited and acquired aminoacidopathies. Adv Clin Chem 1971; 14:145-218. [PMID: 4109903 DOI: 10.1016/s0065-2423(08)60146-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Structure of Membranes and Role of Lipids Therein1 1Contribution No. 358, Animal Research Institute. ACTA ACUST UNITED AC 1971. [DOI: 10.1016/b978-0-12-024909-1.50011-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Scriver CR, Hechtman P. Human genetics of membrane transport with emphasis on amino acids. ADVANCES IN HUMAN GENETICS 1970; 1:211-74. [PMID: 4950283 DOI: 10.1007/978-1-4684-0958-1_4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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23
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Abstract
It has been determined that cortisol and a few other steroids are transported outward from certain mammalian cells growing in vitro. The extrusion process is temperature dependent, glucose dependent, saturable, and operates for only a few selected steroids. Many, but not all, steroids are able to block the extrusion process but are not themselves transported. The outward transport process for steroids has been found in mouse fibroblasts, mouse lymphoma cells, and functional mouse adrenal gland tumor cells growing in vitro. The transport process is not present in two varieties of cells cultured from human sources-HeLa or diploid fibroblasts, WI-38.
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Matthews DM. [Absorption and malabsorption of protein digestion products]. KLINISCHE WOCHENSCHRIFT 1969; 47:397-414. [PMID: 4910981 DOI: 10.1007/bf01745784] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Thomas OA, Davidson J, Boyne AW. Dietary factors affecting the utilisation of protein by laying hens and their effects on the concentrations of certain nitrogenous constituents in the excreta. Br Poult Sci 1969; 10:67-82. [PMID: 5773475 DOI: 10.1080/00071666908415743] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Bartlett P, Johnston CC, Podsiadly CJ. Transport of alpha-aminoisobutyric acid by separated rabbit renal tubules. BIOCHIMICA ET BIOPHYSICA ACTA 1968; 163:418-20. [PMID: 5721904 DOI: 10.1016/0005-2736(68)90128-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Griffin DM, Szego CM. Adenosine 3',5'-monophosphate stimulation of uterine amino acid uptake in vitro. Life Sci 1968; 7:1017-23. [PMID: 4305723 DOI: 10.1016/0024-3205(68)90137-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Reiser S, Christiansen PA. Formation of a complex between valine and intestinal mucosal lipid; its possible role in valine absorption. J Lipid Res 1968. [DOI: 10.1016/s0022-2275(20)42707-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Gillespie E. Homo- and hetero-exchange diffusion of amino acids in Ehrlich ascites carcinoma cells. BIOCHIMICA ET BIOPHYSICA ACTA 1967; 135:1016-29. [PMID: 6065670 DOI: 10.1016/0005-2736(67)90072-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Abstract
The title of this review would be regarded by some psychiatrists as provocative; they would relegate the biochemical concomitants of depression and mania to a secondary position and deny that biochemical changes have any place in the aetiology of these conditions. However, in my view, the weight of evidence, although it is by no means conclusive, suggests that biochemical changes are most important in the aetiology of affective disorders. A biochemical aetiology implies that there are certain biochemical changes in the brain which need to be restored to normal before the patient's clinical condition will improve. This does not deny that psychological and environmental events may precipitate and maintain the biochemical events which in turn lead to the affective disorder. The study of these biochemical events is clearly at too early a stage for speculations about the interrelationship between environmental and endogenous elements to be fruitful; this study must wait until the biochemical aetiology is clearer than at present.
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Sirotnak FM, Sargent MG, Hutchison DJ. Genetically alterable transport of amethopterin in Diplococcus pneumoniae. I. Physiological properties and kinetics of the wild-type system. J Bacteriol 1967; 93:309-14. [PMID: 4381315 PMCID: PMC315003 DOI: 10.1128/jb.93.1.309-314.1967] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
A system of H(3)-amethopterin uptake, physiologically and kinetically resembling active transport, has been described in Diplococcus pneumoniae. Uptake by this system has a pH optimum near 6.0, is temperature-dependent, requires a readily available source of energy, and conforms to Michaelis-Menten kinetics. The system showed a K(m) of 0.9 x 10(-6)m and a V(max) of 1.9 x 10(-13) moles per min per mg (dry weight). Both folate and H(2)-folate compete with H(3)-amethopterin for the same system, but to a limited degree. The intracellular concentration of H(3)-amethopterin accumulated at equilibrium was 1.06 x 10(-9) moles/ml or fivefold the external concentration when the latter was limiting, but at least 60-fold the internal concentration attained solely by diffusion in the same time interval at 0 C.
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Mandels GR, Vitols R. Constitutive and induced trehalose transport mechanisms in spores of the fungus Myrothecium verrucaria. J Bacteriol 1967; 93:159-67. [PMID: 6067002 PMCID: PMC314984 DOI: 10.1128/jb.93.1.159-167.1967] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Trehalose is absorbed by two distinct systems-one constitutive, the other induced by turanose and to a lesser extent by nigerose but not by trehalose. The constitutive system is apparently mediated by a surface trehalase; the induced system has the characteristics of a permease. The specificity of the induced system is apparently limited to the alpha glucosyl-glucose or glucosyl-fructose linkage, because absorption of kojibiose, nigerose, maltose, isomaltose, turanose, sucrose, and melezitose, in addition to that of trehalose, was increased. Absorption of beta-linked or of galactose-containing disaccharides was not increased. The constitutive and induced trehalose-absorbing systems differ in their activity, specificity, lability to acid treatment, effects of substrate concentration, and pH optima. Both systems require oxygen, and no marked differential effects of inhibitors were observed. The activity of the induced system is proportional to log turanose concentration (from about 1 to 300 mug/ml), and is an approximate linear function of time of exposure (from about 1 to 50 min). Accumulation of trehalose occurred against a concentration gradient in both systems but particularly in the induced. No leakage was observed. The activity of the induced system declined slowly upon removal of the inducer. Accumulated trehalose is metabolized after activation by azide as are the endogenous trehalose reserves. The accumulated trehalose appears to enter the endogenous trehalose pool found in these spores, although some data suggest it may be more accessible. Respiratory data indicate that absorbed trehalose is available for metabolism while in transit from the external membrane to the internal pool.
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Abstract
Wiley, W. R. (Battelle Memorial Institute, Richland, Wash.), and W. H. Matchett. Tryptophan transport in Neurospora crassa. I. Specificity and kinetics. J. Bacteriol. 92:1698-1705. 1966.-The transport of tryptophan in Neurospora crassa is mediated by a distinct stereospecific system which is chemically specific for a family of neutral amino acids. The process shows typical saturation kinetics and a sharp decrease in the rate of tryptophan uptake at low temperatures. The Q(10) for the process is approximately 2 between 20 and 30 C. The apparent K(m) for uptake is 5 x 10(-5)m. Leucine and phenylalanine competitively inhibit the rate of tryptophan transport; the K(i) values are 1.1 x 10(-4)m and 4.0 x 10(-5)m, respectively. These data are interpreted as evidence that these amino acids are transported by the same transport site(s). Inhibition studies with amino acids and other compounds structurally related to leucine and phenylalanine suggest that an uncharged side chain and an alpha amino group, next to a carboxyl, represent three attachment points for the uptake site.
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Grenson M, Mousset M, Wiame JM, Bechet J. Multiplicity of the amino acid permeases in Saccharomyces cerevisiae. I. Evidence for a specific arginine-transporting system. BIOCHIMICA ET BIOPHYSICA ACTA 1966; 127:325-38. [PMID: 5964977 DOI: 10.1016/0304-4165(66)90387-4] [Citation(s) in RCA: 324] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Scriver CR, Goldman H. Renal tubular transport of proline, hydroxyproline, and glycine. II. Hydroxy-l-proline as substrate and as inhibitor in vivo. J Clin Invest 1966; 45:1357-63. [PMID: 5926078 PMCID: PMC292812 DOI: 10.1172/jci105443] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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Scriver CR, Pueschel S, Davies E. Hyper-beta-alaninemia associated with beta-aminoaciduria and gamma-aminobutyricaciduria, somnolence and seizures. N Engl J Med 1966; 274:635-43. [PMID: 17926374 DOI: 10.1056/nejm196603242741201] [Citation(s) in RCA: 99] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Hyper-beta-alaninemia was found in a somnolent, convulsing infant. Hyper-beta-aminoaciduria (beta-ala, betaAIB and taurine) was also observed, varying directly with plasma beta-alanine concentration. The beta-aminoaciduria is explained by the interaction between beta-alanine and a specific cellular-transport system with preference for beta-amino compounds. Gamma-aminobutyricaciduria was also observed, its excretion being independent of beta-alanine levels. Dietary modifications, pyridoxine, pantothenic acid and antibiotic therapy were not beneficial. Post-mortem tissues had elevated levels of beta-alanine and carnosine; GABA levels in brain were probably elevated for the age of the patient. A proposed block in beta-alanine-alpha-ketoglutarate transaminase would expand the free beta-alanine pool, thus increasing tissue carnosine. beta-Alanine is a central-nervous-system depressant. Associated inhibition of GABA transaminase and displacement of GABA from central-nervous-system binding sites would produce GABAuria and convulsions.
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Affiliation(s)
- C R Scriver
- Department of Pediatrics, McGill University, Montreal, Quebec
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Vidaver GA. Inhibition of parallel flux and augmentation of counter flux shown by transport models not involving a mobile carrier. J Theor Biol 1966; 10:301-6. [PMID: 5964395 DOI: 10.1016/0022-5193(66)90128-7] [Citation(s) in RCA: 105] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Hillman H. The role of potassium and sodium ions as studied in mammalian brain. INTERNATIONAL REVIEW OF CYTOLOGY 1966; 20:125-37. [PMID: 5337297 DOI: 10.1016/s0074-7696(08)60799-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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44
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Alvarado F. The relationship between Na+ and the active transport of arbutin in the small intestine. BIOCHIMICA ET BIOPHYSICA ACTA 1965; 109:478-94. [PMID: 5893798 DOI: 10.1016/0926-6585(65)90173-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Waller JR, Lichstein HC. Biotin transport and accumulation by cells of Lactobacillus plantarum. I. General properties of the system. J Bacteriol 1965; 90:843-52. [PMID: 5847805 PMCID: PMC315747 DOI: 10.1128/jb.90.4.843-852.1965] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Waller, James R. (University of Cincinnati, Cincinnati, Ohio), and Herman C. Lichstein. Biotin transport and accumulation by cells of Lactobacillus plantarum. I. General properties of the system. J. Bacteriol. 90:843-852. 1965.-Resting cells of Lactobacillus plantarum were saturated with bound biotin by incubation in phosphate buffer with biotin and glucose for 2 hr. This bound biotin was stable to wide changes in temperature, pH, and reaction time. Free biotin could be eluted from the cells by suspending them in cold water or saline. Immersing the cells in boiling water for 30 sec released all free biotin. Recoveries of added biotin exceeded 92%. Free biotin uptake by bound biotin-saturated cells occurred by two mechanisms. One process was independent from temperature (Q(10), 1.25), pH, cellular metabolism, and inhibition by iodoacetate. The other mechanism was dependent upon temperature (Q(10), 2.58; optimum, 37 C), pH (optimum, 7.5), and active cellular metabolism, and was inhibited by iodoacetate. Activation energies of 3,700 and 13,800 cal per mole, respectively, were observed for glucose-independent and -dependent free biotin uptake. Both processes exhibited approximately the same degree of inhibition by homobiotin. Higher concentrations of homobiotin were required to inhibit growth than to inhibit free biotin uptake. Intracellular-extracellular ratios as high as 600 were established in the absence of glucose, whereas ratios of nearly 4,000 occurred in the presence of glucose.
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Harold FM, Harold RL, Abrams A. A Mutant of Streptococcus faecalis Defective in Phosphate Uptake. J Biol Chem 1965. [DOI: 10.1016/s0021-9258(18)97300-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Hempling HG, Hare D. The effect of pyridoxal on potassium fluxes in the Ehrlich mouse ascites tumor cell. J Cell Physiol 1965; 65:419-31. [PMID: 5836972 DOI: 10.1002/jcp.1030650316] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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