401
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Tao KL, Khan AA. Occurrence of some enzymes in starchy endosperm and hormonal regulation of isoperoxidase in aleurone of wheat. PLANT PHYSIOLOGY 1975; 56:797-800. [PMID: 16659397 PMCID: PMC541927 DOI: 10.1104/pp.56.6.797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Peroxidase, indoleacetic acid-oxidase, alkaline, and acid phosphatases were detected in dry starchy endosperm (minus aleurone) of wheat grain. The isoperoxidase pattern differed in different parts of the dry grain. Several new isoperoxidases were found in embryos after soaking. The intensity of isoperoxidases in aleurones was enhanced in the presence of embryo or 2 muM GA(3) after 24 hours of soaking, but decreased after 72 hours. Indoleacetic acid and kinetin had no effect on isoperoxidase of aleurone. Actinomycin D and cycloheximide had no effect on isoperoxidases of aleurones from embryonectomized or naturally occurring embryoless grains. However, these two inhibitors increased the intensity of isoperoxidases in aleurones of intact embryonated grains after soaking.
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402
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Khan AA, Kolattukudy PE. Solubilization of fatty acid synthetase, acyl-CoA reductase, and fatty acyl-CoA alcohol transacylase from the microsomes of Euglena gracilis. Arch Biochem Biophys 1975; 170:400-8. [PMID: 811169 DOI: 10.1016/0003-9861(75)90135-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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403
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Rao VS, Sankhla N, Khan AA. Additive and synergistic effects of kinetin and ethrel on germination, thermodormany, and polyribosome formation in lettuce seeds. PLANT PHYSIOLOGY 1975; 56:263-6. [PMID: 16659284 PMCID: PMC541801 DOI: 10.1104/pp.56.2.263] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The inhibition of germination of Grand Rapids lettuce (Lactuca sativa L.) seeds at 35 C was removed to a marked extent by kinetin and 2-chloroethylphosphonic acid (ethrel). When both compounds were used together, an additive effect was observed. A synergistic effect was, however, noted when ethrel promoted the kinetin reversal of abscisic acid inhibition of seed germination (light- as well as gibberellic acid-, induced). Both kinetin and ethrel increased the total ribosomal material and the percentage of polyribosomes in lettuce seeds imbibed in the light for 24 hours. A combination of the two compounds showed a synergism in polyribosome formation only at high ethrel concentration. The inability of ethrel to reverse abscisic acid inhibition indicates that kinetin action cannot always be substituted by ethrel. The possible mechanisms involved in the enhanced response by a combination of kinetin and ethrel are discussed.
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404
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Khan AA, Bhargava RK, Misra NP. Platelet adhesiveness and serum magnesium ischaemic heart disease. Indian Heart J 1975; 27:186-90. [PMID: 1193649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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405
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Khan AA. Induction of labour in multiparae--oral prostaglandin or intravenous syntocinon. J PAK MED ASSOC 1975; 25:53-6. [PMID: 814291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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406
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Rao VS, Khan AA. Enhancement of polyribosome formation by gibberellic acid and 3',5'-adenosine monophosphate in barley embryos. Biochem Biophys Res Commun 1975; 62:25-30. [PMID: 163079 DOI: 10.1016/s0006-291x(75)80400-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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407
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Khan AA, Kolattukudy PE. Decarboxylation of long chain fatty acids to alkanes by cell free preparations of pea leaves (Pisum sativum). Biochem Biophys Res Commun 1974; 61:1379-86. [PMID: 4218104 DOI: 10.1016/s0006-291x(74)80436-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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408
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Ansari MN, Asharaf SN, Khan AA, Raza SM. Blue rubber bleb naevus syndrome. JOURNAL OF THE INDIAN MEDICAL ASSOCIATION 1974; 63:368-9. [PMID: 4549218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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409
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Tao KL, Khan AA. Penetration of dry seeds with chemicals applied in acetone. PLANT PHYSIOLOGY 1974; 54:956-8. [PMID: 16659008 PMCID: PMC366641 DOI: 10.1104/pp.54.6.956] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Acetone is able to carry chemicals through the seed coats to reach the embryo. The amount of chemical penetrating into the seeds depends on the seed type, permeation time, and the concentration of solution. The chemicals reaching the embryo are biologically effective.
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410
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Tao KL, McDonald MB, Khan AA. Synergistic and additive effects of kinetin and ethrel on the release of seed dormancy. Life Sci 1974; 15:1925-33. [PMID: 4620997 DOI: 10.1016/0024-3205(74)90043-5] [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: 01/11/2023]
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411
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Ashraf SM, Khan AA, Ansari MN, Ansari MZ. Peutz-Jeghers syndrome. JOURNAL OF THE INDIAN MEDICAL ASSOCIATION 1974; 63:335-6. [PMID: 4452792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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412
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413
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Maibach HI, Akers WA, Johnson HL, Khan AA, Skinner WA. Insects. Topical insect repellents. Clin Pharmacol Ther 1974; 16:970-3. [PMID: 4418745 DOI: 10.1002/cpt1974165part2970] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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414
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Khan AA, Mathew B. Parosteal lipoma. JOURNAL OF THE INDIAN MEDICAL ASSOCIATION 1974; 63:285-6. [PMID: 4448935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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415
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Tao KL, Khan AA. Increases in activities of aminoacyl-tRNA synthetases during cold-treatment of dormant pear embryo. Biochem Biophys Res Commun 1974; 59:764-70. [PMID: 4368813 DOI: 10.1016/s0006-291x(74)80045-8] [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: 01/10/2023]
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416
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Van Onckelen HA, Verbeek R, Khan AA. Relationship of ribonucleic Acid metabolism in embryo and aleurone to alpha-amylase synthesis in barley. PLANT PHYSIOLOGY 1974; 53:562-8. [PMID: 16658743 PMCID: PMC541397 DOI: 10.1104/pp.53.4.562] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
RNA metabolism of embryo and aleurone of barley grains (Hordeum vulgare L. cv. Himalaya) was studied to elucidate the role of these tissues in the control of alpha-amylase synthesis and germination. The extent of (3)H-uridine incorporated into various RNA classes of the embryo during the first 12 hours of germination was low but constant. Subsequently, there was a rapid increase in RNA synthesis of all fractions. In the aleurones, after 16 hours, a gradual decrease in (3)H-uridine incorporation was observed, and by the time the synthesis of RNA in the aleurones had stopped, alpha-amylase level was at its highest in the grain.On transfer to accelerated aging conditions (43 C; 85% relative humidity), the grains lost their viability within 4 weeks. That this was due to a rapid deterioration of the embryo and not of the aleurone was apparent in studies on alpha-amylase formation, RNA metabolism, and ATP content in grains in various physiological states reported here. Results presented here also reveal a marked influence of the embryo and GA(3) on the quality of the newly synthesized RNAs. Aleurones which lacked the impulse of embryo or GA(3) were capable of synthesizing RNA but these RNAs were less heterodisperse than RNAs from aleurones which were under the influence of an embryo or GA(3).
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417
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Maibach HI, Khan AA, Akers W. Use of insect repellents for maximum efficacy. ARCHIVES OF DERMATOLOGY 1974; 109:32-5. [PMID: 4588202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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418
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Khan AA, Kohli IS. A note on the sexual behaviour of male camel (Camelus dromedarius). THE INDIAN JOURNAL OF ANIMAL SCIENCES 1973; 43:1092-4. [PMID: 4806534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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419
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Abstract
A case of ovarian ectopic conception, complicating a simultaneous twin intra-uterine pregnancy is described, in which the operative diagnosis was confirmed by histological examination. Such cases are extremely rare and comment is made upon this with references.
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420
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Khan AA, Kolattukudy PE. A microsomal fatty acid synthetase coupled to acyl-CoA reductase in Euglena gracilis. Arch Biochem Biophys 1973; 158:411-20. [PMID: 4147082 DOI: 10.1016/0003-9861(73)90638-3] [Citation(s) in RCA: 25] [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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421
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Khan AA, Tao KL, Roe CH. Application of chemicals in organic solvents to dry seeds. PLANT PHYSIOLOGY 1973; 52:79-81. [PMID: 16658505 PMCID: PMC366443 DOI: 10.1104/pp.52.1.79] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Various chemicals were applied to dry seeds by means of organic solvents. The gibberellic acid-treated (1 mm) lettuce seeds (Lactuca sativa L.) germinated nearly 100% in the dark even after prolonged storage, and those treated with abscisic acid (1 mm or 0.5 mm) failed to germinate in the light. The seedlings emerging from morphactin-treated (1 mm) cucumber seeds (Cucumis sativus L.) exhibited profound changes in morphology. Different combinations of hormones applied to lettuce seeds caused a promotion or an inhibition of germination. Germination promotion or inhibition studies showed that the applied chemicals could be removed by washing with an organic solvent or water. Progressively larger amounts of chemicals were removed with increasing periods of washing. Thus the chemical appeared to penetrate the seed to some degree. The potential of the organic solvent method is discussed.
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422
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Khan AA, Kolattukudy PE. Control of synthesis and distribution of acyl moieties in etiolated Euglena gracilis. Biochemistry 1973; 12:1939-48. [PMID: 4634163 DOI: 10.1021/bi00734a017] [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: 01/11/2023]
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423
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Khan AA, Verbeek R, Waters EC, van Onckelen HA. Embryoless Wheat Grain: A Natural System for the Study of Gibberellin-induced Enzyme Formation. PLANT PHYSIOLOGY 1973; 51:641-5. [PMID: 16658386 PMCID: PMC366322 DOI: 10.1104/pp.51.4.641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Yorkstar wheat, grown in New York State, has a high percentage (10-11) of grains without embryos. The embryoless grains have viable aleurone layers and show no sign of injury. These grains are able to support alpha-amylase synthesis only in the presence of gibberellin A(3) (GA(3)). In the absence of GA(3) some protein synthesis occurs in embryoless grains during the early hours of soaking, indicating that such activity occurs prior to and independent of GA(3) induction of alpha-amylase. The level of beta-amylase on a dry weight basis is the same in embryoless and normal grains and decreases with time of soaking. In the presence of GA(3), beta-amylase decreases at a slower rate. Isoenzymes of alpha-amylase from GA(3)-treated embryoless and normal grains show quantitative as well as qualitative differences. Cycloheximide (60 mug/ml) completely inhibits the synthesis of alpha-amylase by embryoless grains. Of the RNA synthesis inhibitors, actinomycin D (60 mug/ml) was ineffective while 6-methylpurine (60 mug/ml) gave 65% inhibition without decreasing the number of isoenzymes.
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424
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Gaspar T, Khan AA, Fries D. Hormonal control of isoperoxidases in lentil embryonic axis. PLANT PHYSIOLOGY 1973; 51:146-9. [PMID: 16658276 PMCID: PMC367372 DOI: 10.1104/pp.51.1.146] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Detachment of the cotyledons from the lentil (Lens culinaris Med.) embryonic axis causes in the latter an increase in total peroxidase activity which is shown to be due to enhancement of specific cathodic isoperoxidases. Kinetin treatment of attached or detached axes promotes activity of essentially the same cathodic isoperoxidases. In addition kinetin enhances the activity of two anodic peroxidases and represses specifically that of a cathodic one. Abscisic acid inhibits the production of all isoenzymes in the presence or absence of kinetin. Cytokinin and abscisic acid actions are discussed in relation to the nature of a wounding hormone and the role of natural inhibitors in cotyledons during germination. Indoleacetic acid stimulates the activity of certain isoenzymes which are also stimulated by kinetin, whereas in others the effects of the two hormones are different. Specific inverse effects of indoleacetic acid and kinetin are demonstrated on the two most cathodic isoperoxidases. Indoleacetic acid-kinetin interactions on the cathodic isoperoxidases have been found in the literature and are discussed as a possible mechanism for explaining interactions of the two regulators on growth and other physiological processes.
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425
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Khan AA. The hospital care of East African children. "Who goes where?" Selection and direction (functions of the filter clinic). THE JOURNAL OF TROPICAL PEDIATRICS AND ENVIRONMENTAL CHILD HEALTH 1972; 18:77-81. [PMID: 4483813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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426
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Khan AA. Treatment of malnourished children. Lancet 1972; 1:90. [PMID: 4108961 DOI: 10.1016/s0140-6736(72)90081-5] [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: 01/08/2023]
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427
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Abstract
In the United Kingdom the more liberal attitude towards abortions engendered by the 1967 Act has increased the work of a gynaecological unit at Salford, Lancashire, by about 10%. In 1964-65 there were 15 therapeutic abortions, and in 1969-70 the number had increased to 447. The increased demand has been catered for by a reduction of stay in gynaecological patients: in fact, the "through-put" has increased and the waiting-list diminished. The increased work-load on the blood transfusion service has been slight, and on the credit side there has been a reduction in the numbers of septic abortions. The major problem has been in the outpatient department, since these cases are time-consuming and it is difficult to make a fair and impartial decision.
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428
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Harman GE, Khan AA, Drury RE. Morphactin influences sexual and asexual reproduction in fungi. Can J Microbiol 1971; 17:1477-9. [PMID: 5156943 DOI: 10.1139/m71-236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
It has been reported that fungi are not affected morphologically by morphactins. We found, however, that levels of perithecial formation by Nectria haematococca and pycnidial formation by Ascochyta pisi were strikingly lowered by concentrations of morphactin not inhibiting or only slightly inhibiting vegetative growth. Photo- or geo-tropism of Phycomyces blakesleeanus was not affected, and there was no evidence for interference by morphactin in the light reactions stimulating perithecial production by Nectria haematococca.
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429
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Abstract
The determination of the crystal structure of muirite, Ba(10)(Ca,Mn,Ti)(4)Si(8)O(24)(Cl,OH,O)(12) . 4H(2)O, revealed the presence of discrete cyclic silicate anions, (Si(8)O(24))(16-), formed by the condensation of eight silicate tetrahedra. This first reported occurrence of eight-membered rings is of particular interest, because rings with eight tetrahedra are reported to be energetically less stable than rings with six tetrahedra, which have been found in many minerals.
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430
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431
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Rosenberg IK, Gupta SL, Lucas CE, Khan AA, Rosenberg BF. Renal insufficiency after trauma and sepsis. A prospective functional and ultrastructural analysis. ARCHIVES OF SURGERY (CHICAGO, ILL. : 1960) 1971; 103:175-83. [PMID: 5562806 DOI: 10.1001/archsurg.1971.01350080091013] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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432
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Khan AA, Maibach HI. A study of the probing response of Aedes aegypti. 2. Effect of desiccation and blood feeding on probing to skin and an artificial target. JOURNAL OF ECONOMIC ENTOMOLOGY 1971; 64:439-442. [PMID: 5551924 DOI: 10.1093/jee/64.2.439] [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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433
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Khan AA, Maibach HI. A study of the probing response of Aedes aegypti. 4. Effect of dry and moist heat on probing. JOURNAL OF ECONOMIC ENTOMOLOGY 1971; 64:442-443. [PMID: 5551925 DOI: 10.1093/jee/64.2.442] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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434
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Khan AA, Maibach HI, Strauss WG. A quantitative study of variation in mosquito response and host attractiveness. JOURNAL OF MEDICAL ENTOMOLOGY 1971; 8:41-43. [PMID: 5555004 DOI: 10.1093/jmedent/8.1.41] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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435
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436
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Khan AA, Sanwal GG. Diurnal variation in the activities of isocitrate and glucose-6-phosphate dehydrogenase in cactus phylloclades. EXPERIENTIA 1971; 27:136. [PMID: 5544713 DOI: 10.1007/bf02145852] [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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437
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Khan AA, Maibach HI. A study of the probing response of Aedes aegypti. 3. Effect of oviposition on probing. JOURNAL OF ECONOMIC ENTOMOLOGY 1970; 63:2009. [PMID: 5508375 DOI: 10.1093/jee/63.6.2009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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438
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Vishwakarma SK, Tyagi SP, Khan AA. Benign metastasizing thyroid struma presenting as nasal polyp. J Laryngol Otol 1970; 84:1261-5. [PMID: 5491648 DOI: 10.1017/s002221510007300x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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439
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Khan AA, Pal SP, Raghavan SR, Bhattacharyya PK. Studies on Serratia marcescens L-asparaginase. Biochem Biophys Res Commun 1970; 41:525-33. [PMID: 4920868 DOI: 10.1016/0006-291x(70)90044-6] [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: 01/13/2023]
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440
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Khan AA, Andersen L, Gaspar T. Abscisic Acid-induced Changes in Nucleotide Composition of Rapidly Labeled Ribonucleic Acid Species of Lentil Root: Reversal by Kinetin. PLANT PHYSIOLOGY 1970; 46:494-5. [PMID: 16657493 PMCID: PMC396623 DOI: 10.1104/pp.46.3.494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
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441
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Khan AA, Anojulu CC. Abscisic acid induced changes in nucleotide composition of rapidly labelled RNA species of pear embryos. Biochem Biophys Res Commun 1970; 38:1069-75. [PMID: 4314390 DOI: 10.1016/0006-291x(70)90348-7] [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: 01/10/2023]
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442
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Khan AA, Krishnan PS, Sanwal GG. Influence of detergents on enzymic activity of cactus mitochondria. INDIAN JOURNAL OF BIOCHEMISTRY 1969; 6:208-10. [PMID: 4314883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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443
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444
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Khan AA, Maibach HI, Strauss WG, Fisher JL. Increased attractiveness of man to mosquitoes with induced eccrine sweating. Nature 1969; 223:859-60. [PMID: 5799038 DOI: 10.1038/223859a0] [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: 01/16/2023]
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445
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Khan AA, Waters EC. On the hormonal control of post-harvest dormancy and germination in barley seeds. Life Sci 1969; 8:729-36. [PMID: 5801491 DOI: 10.1016/0024-3205(69)90009-5] [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: 01/16/2023]
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446
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Khan AA, Heit CE. Selective effect of hormones on nucleic acid metabolism during germination of pear embryos. Biochem J 1969; 113:707-12. [PMID: 5386193 PMCID: PMC1184754 DOI: 10.1042/bj1130707] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
1. The effect of hormones on (32)P incorporation into various RNA fractions in germinating pear embryos was studied by fractionation on methylated albumin-kieselguhr columns. Abscisic acid inhibited labelling of soluble RNA, DNA-RNA hybrid and light-ribosomal RNA fractions with (32)P and this effect was reversed by both kinetin and gibberellic acid. 2. Kinetin reversed the inhibition by abscisic acid of (32)P incorporation into total ribosomal RNA and appeared to promote labelling of heavy-ribosomal RNA. Gibberellic acid was more active than kinetin in reversing the inhibition by abscisic acid of labelling of the DNA-RNA hybrid fraction with (32)P, but in contrast with kinetin appeared to increase further the inhibition by abscisic acid of labelling of total ribosomal RNA. 3. The percentage of radioactivity in various RNA fractions showed marked variation in response to hormones. 4. The pattern of labelling of RNA in pear embryos during reversal of inhibition by abscisic acid with a combination of kinetin and gibberellic acid was similar to that after cold-treatment of dormant pear embryos. This is suggestive of hormonal interplay in dormancy release by cold-treatment in pear embryos.
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447
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Jafri RH, Khan AA. A study of the development of a nuclear-polyhedrosis virus of Heliothis in Galleria mellonella larvae exposed to gamma rays. J Invertebr Pathol 1969; 14:104. [PMID: 5804150 DOI: 10.1016/0022-2011(69)90017-2] [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: 01/16/2023]
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448
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449
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Khan AA, Maibach HI, Strauss WG. Gross variations in the response to man among yellow-fever mosquito populations in the laboratory. JOURNAL OF ECONOMIC ENTOMOLOGY 1969; 62:96-98. [PMID: 5763289 DOI: 10.1093/jee/62.1.96] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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450
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Maibach HI, Khan AA, Strauss WG, Skinner WA. Human skin in relationship to mosquito attraction and repulsion. CONNECTICUT MEDICINE 1969; 33:23-8. [PMID: 4387529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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