551
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Abstract
The amino acid sequence of the precursor to the second-most-abundant serum antifreeze protein (B) in the winter flounder has been determined by a combination of protein and DNA sequencing. The precursor is an 82-residue preproprotein which differs in only three positions from the amino acid sequence of the precursor for the most-abundant serum antifreeze protein (A). The base changes responsible for these substitutions, as well as several silent changes, are all clustered within the DNA coding for the mature protein portion. Among the post-translational modifications that the precursor undergoes is the removal of the c-terminal glycine residue. Cloning of full-length antifreeze protein cDNA has enabled us to identify the transcription initiation site which occurs 49 nucleotides upstream from the initiation codon.
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552
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Durham R, Joshi S. Lead–210 Dating of Sediments From Some Northern Ontario Lakes. DEVELOPMENTS IN PALAEONTOLOGY AND STRATIGRAPHY 1984. [DOI: 10.1016/s0920-5446(08)70065-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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553
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Dixit VP, Joshi S. Effect of Aloe barbedensis & clofibrate on serum lipids in triton-induced hyperlipidaemia in Presbytis monkeys. Indian J Med Res 1983; 78:417-21. [PMID: 6674162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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554
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Joshi RL, Joshi S, Chapeville F, Haenni AL. tRNA-like structures of plant viral RNAs: conformational requirements for adenylation and aminoacylation. EMBO J 1983; 2:1123-7. [PMID: 6556143 PMCID: PMC555245 DOI: 10.1002/j.1460-2075.1983.tb01556.x] [Citation(s) in RCA: 74] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Bromo- and cucumovirus RNAs contain a tRNA-like structure as an integral part of their genome. This structure is located at the 3' end of the viral RNA and is an acceptor of tyrosine. The 3' regions of representative viral RNAs have been sequenced and quite unorthodox secondary foldings have been proposed for these 3' ends. The question therefore remained as to how these structures could be recognized by tRNA-specific enzymes. We have established the minimum number of nucleotides from the 3' end of the brome mosaic virus and broad bean mottle virus RNAs required for the formation of structures recognized by the tyrosyl-tRNA synthetase and/or the tRNA nucleotidyltransferase. The results obtained delineate the length of the tRNA-like region, and indicate that the 5' region of the tRNA-like structure participates in the formation of the amino acid stem. This has led us to propose an 'L'-shaped secondary structure for these tRNA-like regions.
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555
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Hughes J, Joshi S, Sanadi DR. Coupling factor B involvement in the inhibition of Pi-ATP exchange activity by N-ethylmaleimide. FEBS Lett 1983; 153:441-6. [PMID: 6137415 DOI: 10.1016/0014-5793(83)80660-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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556
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Joshi S, Pleij CW, Haenni AL, Bosch L. Age dependence of cowpea protoplasts for uptake of spermidine and infectibility by alfalfa mosaic virus. PLANT MOLECULAR BIOLOGY 1983; 2:89-94. [PMID: 24318141 DOI: 10.1007/bf01595170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/1983] [Accepted: 04/19/1983] [Indexed: 06/02/2023]
Abstract
Cowpea protoplasts were prepared from plants of different ages and examined for their ability to take up polyamines and for their infectibility by alfalfa mosaic virus. A lag period of ∼20 h was necessary before the onset of rapid polyamine uptake; the occurrence of this rapid uptake depended on the age of the leaves used for protoplast preparation. The percentage of infection of cowpea protoplasts by alfalfa mosaic virus, and the amount of virus produced also depended on the age of the plants used for protoplast preparation. In contrast, the uptake of amino acids was rapid in all cowpea protoplasts tested.
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557
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Hughes J, Joshi S, Torok K, Sanadi DR. Isolation of a highly active H+-ATPase from beef heart mitochondria. J Bioenerg Biomembr 1982; 14:287-95. [PMID: 6219103 DOI: 10.1007/bf00743058] [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]
Abstract
The lysolecithin extraction procedure originally described by Sadler et al. (1974) has been modified to yield a H+-ATPase with high levels of Pi-ATP exchange activity (400-600 nmol x min-1 x mg-1). This activity is further enhanced (1400-1600 nmol x min-1 x mg-1) following sucrose density gradient centrifugation in the presence of asolectin. This enhancement results in part from a lipid-dependent activation and in part from removal of inactive complexes. The H+ translocating activity of the complex has been determined spectrophotometrically using binding of oxonol VI as an indicator of membrane potential. Pi-ATP exchange, ATP hydrolysis, and oxonol binding are sensitive to energy-transfer inhibitors (oligomycin, rutamycin) and/or uncouplers (DNP, FCCP).
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558
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Bhargava A, Gupta SD, Mangal DK, Joshi S, Jain TP. Nutritional intervention among rural pre-school children--an evaluatory study. Indian J Pediatr 1982; 49:695-9. [PMID: 7188194 DOI: 10.1007/bf02752656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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559
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Joshi S, Chapeville F, Haenni AL. Turnip yellow mosaic virus RNA is aminoacylated in vivo
in Chinese cabbage leaves. EMBO J 1982; 1:935-8. [PMID: 16453426 PMCID: PMC553138 DOI: 10.1002/j.1460-2075.1982.tb01274.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Turnip yellow mosaic virus (TYMV) contains a tRNA-like structure as an integral part of its genome. This structure is located at the extreme 3' end of the viral RNA and is the acceptor of valine after 3'-terminal adenylation. It is known that in vitro (with bacterial, yeast, or plant systems) and in vivo (upon microinjection into Xenopus laevis oocytes) a series of tRNA-specific enzymes can recognize this structure in the viral RNA. We report that TYMV RNA is valylated and consequently adenylated in vivo in its natural host, Chinese cabbage leaves. This suggests that the acylated form of the viral RNA could play an important role in the life-cycle of the virus.
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560
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Dixit VP, Joshi S. Effects of chronic administration of garlic (Allium sativum Linn) on testicular function. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 1982; 20:534-6. [PMID: 7173985] [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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561
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Hughes JB, Joshi S, Sanadi DR. On the role of factor B and oligomycin on generation and discharge of the proton gradient. J Biol Chem 1982; 257:6697-701. [PMID: 7085595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Bovine mitochondrial coupling factor B (FB) stimulates oxidative phosphorylation as well as other energy-linked reactions which are supported by ATP hydrolysis. Extraction of FB from submitochondrial particles results in a decrease in ATP-dependent proton translocation (delta pH) and binding of the voltage-sensitive dye, oxonol VI. Reconstitution of deficient particles with FB restores ATP-dependent proton translocation and oxonol binding but has little effect on oxonol binding supported by respiratory substrates.l In contrast, low levels of oligomycin stimulate oxonol binding supported by either ATP or NADH. In the case of oligomycin, the stimulatory effect is associated with a decrease in the rate of discharge of the proton gradient, but the depletion of FB or its restoration has no detectable effect on the discharge rate. The data indicate that the primary effect of FB is upon the rate of H+ translocation coupled to ATP hydrolysis, while that of low oligomycin is on the H+ permeability of the membrane.
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562
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Hughes JB, Joshi S, Sanadi DR. On the role of factor B and oligomycin on generation and discharge of the proton gradient. J Biol Chem 1982. [DOI: 10.1016/s0021-9258(18)34486-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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563
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Ribon A, Joshi S. Is there any relationship between food additives and hyperkinesis? ANNALS OF ALLERGY 1982; 48:275-8. [PMID: 6896271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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564
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Joshi S, Chapeville F, Haenni AL. Length requirements for tRNA-specific enzymes and cleavage specificity at the 3' end of turnip yellow mosaic virus RNA. Nucleic Acids Res 1982; 10:1947-62. [PMID: 6176943 PMCID: PMC320582 DOI: 10.1093/nar/10.6.1947] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
This paper describes the minimum length of the turnip yellow mosaic virus (TYMV) RNA necessary to fulfill the tRNA-like properties of the viral RNA: 50 to 75 nucleotides and 86 nucleotides from the 3' end of TYMV RNA are sufficient for adenylation and valylation respectively by the Escherichia coli system. The size of the tRNA-like fragments obtained in vitro in the presence of an E. coli, a reticulocyte or a chinese cabbage leaf extract has also been determined. Among the major fragments liberated from the 3' end of TYMV RNA by the three systems are fragments of 117 and 112 nucleotides. In addition, the E. coli extract liberates fragments of 139 and 61 nucleotides, and the reticulocyte lysate fragments of 109, 94, 84, 73 and 46 nucleotides. The cleavage of the viral RNA by several systems in vitro to yield RNA fragments encompassing the tRNA-like sequence suggests that such fragments might also be liberated in vivo.
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565
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Haenni AL, Joshi S, Chapeville F. tRNA-like structures in the genomes of RNA viruses. PROGRESS IN NUCLEIC ACID RESEARCH AND MOLECULAR BIOLOGY 1982; 27:85-104. [PMID: 6285419 DOI: 10.1016/s0079-6603(08)60598-x] [Citation(s) in RCA: 131] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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566
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Sanadi DR, Hughes JB, Joshi S. Activation of potassium-dependent H+ efflux from mitochondria by cadmium and phenylarsine oxide. J Bioenerg Biomembr 1981; 13:425-31. [PMID: 7334025 DOI: 10.1007/bf00743214] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Addition of Cd2+ or phenylarsine oxide (PhAsO) to respiring rat liver mitochondria results first in acidification of the medium (H+ efflux) followed by disappearance of H+ (discharge of the pH gradient or uncoupling). The first phase of H+ efflux is dependent upon the presence of K+ in the medium, and is not seen in the presence of valinomycin, which is consistent with the conclusion that H+ efflux is linked to membrane potential-dependent uptake of K+. These effects are abolished by low levels of 2,3-dimercaptopropanol but potentiated by excess of 2-mercaptoethanol, showing involvement of a dithiol type of group in the response. Mersalyl produces only the H+ efflux, and subsequent addition of Cd2+ of PhAsO produces collapse of the delta pH.
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567
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Joshi S, Hughes JB. Inhibition of coupling factor B activity by cadmium ion, arsenite-2,3-dimercaptopropanol, and phenylarsine oxide, and preferential reactivation by dithiols. J Biol Chem 1981; 256:11112-6. [PMID: 6116711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Coupling factor B activity was measured by the stimulation of the ATP-driven NAD+ reduction by succinate or the 32Pi-ATP exchange activity of Factor B-depleted submitochondrial particles. Half-maximal coupling activity was inhibited by 30 microM cadmium, 5 microM phenylarsine oxide, or 0.3 mM arsenite-2,3-dimercaptopropanol. The inhibition was relieved by slight excess of dithiol but not by a 10-fold molar excess of 2-mercaptoethanol. Inhibition of coupling activity by phenylarsine oxide or cadmium was not due to interference in binding of Factor B to depleted particles. Isolated Factor B binds phenylarsine oxide resulting in loss of ability to stimulate depleted submitochondrial particles. The inhibition was largely overcome by dithiol but not by monothiols. The residual coupling activity of depleted submitochondrial particles was highly resistant to cadmium or arsenical. Moreover, binding of arsenical to the depleted particles per se, did not result in inhibition of Factor B-stimulated activity. Furthermore, the addition of phenylarsine oxide to H+-ATPase resulted in loss of Pi-ATP exchange and stimulation of oligomycin-sensitive ATPase activities. Both effects were further potentiated by 2-mercaptoethanol and reversed by dithiols. These effects parallel uncoupling of oxidative phosphorylation in mitochondria by these inhibitors and point to Factor B as the probable component sensitive to these inhibitors.
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568
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Joshi S, Hughes JB, Houghton RL, Sanadi DR. Occurrence of proteins immunoreactive with anti-coupling factor B in phosphorylating membrane preparations. BIOCHIMICA ET BIOPHYSICA ACTA 1981; 637:504-11. [PMID: 7284357 DOI: 10.1016/0005-2728(81)90057-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Coupling factor B has been isolated from beef heart mitochondria, apparently in multiple forms which differ in molecular weight and specific activity. Since it has no known intrinsic catalytic activity, detection and quantitation have been based upon the factor B-dependent stimulation of ATP-linked activities in factor B-deficient sub-mitochondrial particles. This communication reports the development of a reliable and more universally applicable enzyme-linked immunosorbent assay (ELISA) for detection and quantitation of factor B in soluble or membranous preparations. The assay requires nanoliter volumes of rabbit antiserum raised against purified factor B and will detect nanogram amounts of the coupling factor. Analysis of beef heart submitochondrial particles using a competitive binding ELISA indicated a factor B content of 0.27 nmol/mg protein, making factor B stoichiometric with F1 (0.3--0.6 nmol/mg). Furthermore, application of the factor B ELISA has indicated the presence of material cross-reacting with the beef heart factor B-antiserum in phosphorylating membranes from chloroplasts, Escherichia coli, Paracoccus denitrificans and the thermophilic bacterium, PS3. Negative results were obtained with mitochondria and microsomes from rat liver, purple membranes from Halobium halobacterium and sarcoplasmic reticulum from rabbit skeletal muscle.
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569
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Hughes J, Joshi S, Ascoli D. Elimination of thiol reagent interference during Lowry protein determination. Anal Biochem 1981; 117:1-5. [PMID: 7316184 DOI: 10.1016/0003-2697(81)90681-3] [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: 01/24/2023]
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570
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Gupta SD, Jain TP, Joshi S, Mangal DK. Infant mortality in Rajasthan villages. Indian Pediatr 1981; 18:101-5. [PMID: 7263000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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571
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Joshi S, Haenni AL. Fluorographic detection of nucleic acids labelled with weak beta-emitters in gels containing high acrylamide concentrations. FEBS Lett 1980; 118:43-6. [PMID: 7409190 DOI: 10.1016/0014-5793(80)81214-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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572
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Agrawal CM, Gupta SD, Jain TP, Joshi S. Age independent indices in assessment of malnutrition. Indian Pediatr 1980; 17:683-7. [PMID: 7228359] [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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573
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Joshi S, Hughes JB, Shaikh F, Sanadi DR. On the role of coupling factor B in the mitochondrial Pi-ATP exchange reaction. J Biol Chem 1979; 254:10145-52. [PMID: 158592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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574
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Joshi S, Hughes J, Shaikh F, Sanadi D. On the role of coupling factor B in the mitochondrial Pi-ATP exchange reaction. J Biol Chem 1979. [DOI: 10.1016/s0021-9258(19)86685-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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575
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Joshi S, Astarita G. Mathematical model of the desorption of swelling solvents from swollen polymer films. POLYMER 1979. [DOI: 10.1016/0032-3861(79)90146-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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576
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Gupta SD, Sharma R, Gupta OP, Joshi S. A study of feeding patterns in rural preschool children. Indian J Pediatr 1979; 46:232-36. [PMID: 528019 DOI: 10.1007/bf02790639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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577
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578
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579
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580
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Joshi S, Zenser TV, Mattammal MB, Herman CA, Davis BB. Kidney metabolism of acetaminophen and phenacetin. THE JOURNAL OF LABORATORY AND CLINICAL MEDICINE 1978; 92:924-31. [PMID: 739171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The metabolism of acetaminophen and phenacetin by rabbit kidney slices was investigated. Phenacetin, like aspirin, inhibited [131I] Hippuran accumulation by the organic acid transport system. Phenacetin exhibited a dose-dependent inhibition with a K1 of 0.5 mM; acetaminophen at concentrations as high as 1 mM did not alter organic acid transport. [3H] acetaminophen slice: media ratios of approximately 1 or less suggested that acetaminophen entered cortex and outer and inner medullary slices by diffusion rather than active transport. Approximately 95% of the acetaminophen within the slices readily diffused out into the media. The chromatographic patterns of this material were similar to that of the incubation media. The acetaminophen remaining within the slices was acid-precipitable and not extractable with organic solvents. This covalent binding of acetaminophen was inhibited by glutathione. More acetaminophen was bound in the renal medullar than cortex. These data suggest that the renal metabolism of acetaminophen observed in this in vitro study may be related to the nephritis observed in analgesic abuse.
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581
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Joshi S, Haenni AL, Hubert E, Huez G, Marbaix G. In vivo aminoacylation and 'processing' of turnip yellow mosaic virus RNA in Xenopus laevis oocytes. Nature 1978; 275:339-41. [PMID: 567751 DOI: 10.1038/275339a0] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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582
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Zenser TV, Mattammal MB, Herman CA, Joshi S, Davis BB. Effect of acetaminophen on prostaglandin E2 and prostaglandin F2alpha synthesis in the renal inner medulla of rat. Biochim Biophys Acta Gen Subj 1978; 542:486-95. [PMID: 210841 DOI: 10.1016/0304-4165(78)90378-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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583
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Joshi S, Prakash MK. The child in orthodontic practice. INTERNATIONAL JOURNAL OF ORTHODONTICS 1978; 16:9-13. [PMID: 278782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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584
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Joshi S, Shaikh F, Sanadi DR. Restoration of Pi-ATP exchange in the oligomycin-sensitive ATPase: effect of a coupling factor. Biochem Biophys Res Commun 1975; 65:1371-7. [PMID: 150273 DOI: 10.1016/s0006-291x(75)80381-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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585
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Joshi S, Wanner HU. [Emissions from combustion of indoor dust (author's transl)]. ZENTRALBLATT FUR BAKTERIOLOGIE, PARASITENKUNDE, INFEKTIONSKRANKHEITEN UND HYGIENE. ERSTE ABTEILUNG ORIGINALE. REIHE B: HYGIENE, PRAVENTIVE MEDIZIN 1975; 160:499-508. [PMID: 242164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Combustion of dust is an old problem which has gained a new importance since the introduction of electric storage heaters for space heating. Physico-chemical changes caused by heating indoor dust in a model apparatus were investigated. Four dust samples of different origins were heated at three temperatures (200, 400, 600 degrees C) for three residence times (5, 15, 30 min). The higher the temperature, the higher the weight loss expressed as percentage (15 to 75%). The residence time had no effect on the loss. Three dust samples showed pH of about 7 before heated, while the fourth showed pH of about 10. After heating to 200 degrees C, the pH of one of the samples rose from 7 to 10. When heated to 400 and 600 degrees C, all the samples showed pH values between 10 and 11. The residence time had no effect. The pH of the gaseous reaction products did not show uniform pattern at 200 degrees C. At 400 degrees C, the measured pH was between 7.5 and 8.5, while at 600 degrees C no further change was observed. Changes in pH took place during the first fifteen minutes. Chemical analysis of the reaction products with help of detector tubes indicated that dust samples when heated emit carbon monoxide, carbon dioxide, oxides of nitrogen and ammonia.
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586
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Fisher RJ, Panet R, Joshi S, Sanadi DR. ATP synthetase: a mixture of factor A and avidin sensitive ATP-Pi exchange activity. Biochem Biophys Res Commun 1973; 54:469-74. [PMID: 4796475 DOI: 10.1016/0006-291x(73)91444-7] [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: 01/12/2023]
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587
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Asahina S, Andrea J, Carmel A, Arnold E, Bishop Y, Joshi S, Coffin D, Epstein SS. Carcinogenicity of organic fractions of particulate pollutants collected in New York City and administered subcutaneously to infant mice. Cancer Res 1972; 32:2263-8. [PMID: 4343014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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588
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Epstein SS, Bass W, Arnold E, Bishop Y, Joshi S, Adler ID. Sterility and semisterility in male progeny of male mice treated with the chemical mutagen TEPA. Toxicol Appl Pharmacol 1971; 19:134-46. [PMID: 5570965 DOI: 10.1016/0041-008x(71)90100-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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589
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Dawaka K, Gupta A, Joshi S, Bajpai S, Basi HS. A rare case of virilizing adult granulosa cell tumor. JNMA J Nepal Med Assoc 1970. [DOI: 10.31729/jnma.806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
A twenty eight year old lady, married for two years with no issue, presented at WesternRegional Hospital Pokhara on 8th July, 1999 with a history of amenorrhea for 1½years, lump abdomen 1 year, hoarseness of voice for 1 year and signs of hirsutism forthe same duration. She was taken up for laparotomy wherein a left ovariectomy withsalpingectomy was done and a large cystic ovarian tumor was removed. Post operativeperiod was uneventful and she was advised follow up. The histopathological diagnosiswas Adult Granulosa Cell Tumor. What made this case interesting is that mostGranulosa Cell Tumors (about 3/4th) are estrogenic or feminizing, but rare examples,including a disproportionate number of large thin walled cystic tumors are androgenic.This was one of those rare virilizing tumors with classical features of infertility,amenorrhea, hoarseness of voice, clitiromegaly, and breast atrophy, but we could notestimate testosterone levels due to lack of facilities available.Key Words: Granulosa Cell Tumor, Virilizing Ovarian Tumors, Sex Cord stromal tumors.
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590
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Epstein SS, Andrea J, Joshi S, Mantel N. Hepatocarcinogenicity of griseofulvin following parenteral administration to infant mice. Cancer Res 1967; 27:1900-6. [PMID: 4294321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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591
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Epstein SS, Andrea J, Jaffe H, Joshi S, Falk H, Mantel N. Carcinogenicity of the herbicide maleic hydrazide. Nature 1967; 215:1388-90. [PMID: 4293419 DOI: 10.1038/2151388a0] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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592
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Diwan BA, Joshi S. Effect of 2,6-diaminopurine on the early development of Planorbis exustus. THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 1967; 54:344. [PMID: 5585353 DOI: 10.1007/bf00621465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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593
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