151
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Goswami R. High-dose intravenous immunoglobulin treatment in Graves' ophthalmopathy. ACTA ENDOCRINOLOGICA 1992; 126:474. [PMID: 1621491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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152
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Goswami R, Gurtoo A, Agarwal SK. Worsening heart failure in a case of rheumatic heart disease--the hypocalcaemic link. Int J Cardiol 1992; 35:126-7. [PMID: 1563871 DOI: 10.1016/0167-5273(92)90067-d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A case of rheumatic heart disease is reported with hypocalcaemia due to hypoparathyroidism. This rare combination has therapeutic implications which affect the course and outcome of the cardiac symptoms.
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153
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Taskar VS, Sharma RR, Goswami R, John PJ, Mahashur AA. Effect of bromhexeine on sputum amoxycillin levels in lower respiratory infections. Respir Med 1992; 86:157-60. [PMID: 1615182 DOI: 10.1016/s0954-6111(06)80233-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Bromhexeine has been widely used as an adjunct in the management of lower respiratory infections and is useful in altering the physical characteristics of sputum. Its effect on the sputum penetration of an antibiotic has been sparsely studied. The present study highlights the improvement in sputum amoxycillin (amoxy) levels when a combination tablet, amoxy 500 mg plus bromhexeine 8 mg, is administered as compared to plain amoxy 500 mg. Sputum amoxy levels were significantly higher in the combination group (0.674 +/- 0.588 micrograms ml-1) as compared to 0.272 +/- 0.19 micrograms ml-1 in the amoxy group (P = 0.028). The clinical responses assessed by the physician as well as the patient were significantly better in the amoxy plus bromhexeine group as compared to the amoxy group. The radiological and bacteriological responses were similar in both groups. There was no increase in the side-effects due to bromhexeine and, overall, its use can be recommended in the treatment of acute lower respiratory infections.
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154
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Goswami R, Turk B, Enderle K, Howe A, Rundell K. Effect of zinc ions on the biochemical behavior of simian virus 40 small-t antigen expressed in bacteria. J Virol 1992; 66:1746-51. [PMID: 1310775 PMCID: PMC240925 DOI: 10.1128/jvi.66.3.1746-1751.1992] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The simian virus 40 small-t antigen contains 10 cysteine residues, 6 of which are organized in two CysXCysXXCys clusters. Mutation of individual Cys residues in the two clusters or mutation of specific residues found between these clusters causes pronounced instability of the protein in animal cells. Protein instability correlates with failure of the bacterially expressed mutant proteins to bind zinc ions, an interaction which allows purification of large amounts of small-t antigen in monomeric form.
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155
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Venepalli BR, Aimone LD, Appell KC, Bell MR, Dority JA, Goswami R, Hall PL, Kumar V, Lawrence KB, Logan ME. Synthesis and substance P receptor binding activity of androstano[3,2-b]pyrimido[1,2-a]benzimidazoles. J Med Chem 1992; 35:374-8. [PMID: 1370695 DOI: 10.1021/jm00080a025] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Several heterosteroids containing a dihydroethisterone skeleton were prepared and shown to displace substance P in a receptor binding assay. Further biochemical (kinetic and Scatchard analyses) and pharmacological evaluation (substance P-induced plasma extravasation and salivation in the rat) of a representative example in this series (5a) established that these compounds are competitive antagonists at the substance P receptor.
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156
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Banerjee P, Sethi B, Chatterjee MB, Goswami R. Properties of high spin states in 53Cr and 53Mn. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1991; 44:1128-1136. [PMID: 9967512 DOI: 10.1103/physrevc.44.1128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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157
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Appell KC, Babb BE, Goswami R, Hall PL, Lawrence KB, Logan ME, Przyklek-Elling R, Tomczuk BE, Venepalli BR, Yanni JM. Imidazo[4,5-b]quinoxaline cyanines as neurokinin antagonists. J Med Chem 1991; 34:1751-3. [PMID: 1851847 DOI: 10.1021/jm00109a034] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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158
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Goswami HK, Chandorkar M, Bhattacharya K, Vaidyanath G, Parmar D, Sengupta S, Patidar SL, Sengupta LK, Goswami R, Sharma PN. Search for chromosomal variations among gas-exposed persons in Bhopal. Hum Genet 1990; 84:172-6. [PMID: 2298454 DOI: 10.1007/bf00208935] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A chromosomal survey using standard lymphocyte cultures employing different media and G-banding techniques was initiated in 1984. This study became particularly important following the tragic gaseous exposure of the population in Bhopal at midnight on 2 December 1984. We have been able to formulate a chromosomal profile for each person whom we have studied; during 1986-1988, 154 persons were examined twice. Among seemingly normal individuals, as many as 20% might possess some chromosomal abnormality; of these, 50% may develop, at a later date, some kind of pathological complication (such as tumours, recurrent abortion or transmission of defects to their offspring). The people exposed to methyl isocyanate have repeatedly shown Robertsonian translocations, mostly in acrocentric chromosomes 13 and 21. Other types of translocations have been studied among all exposed (53) and normal (101) persons; the involvement of chromosomes 5, 9, 11, 14 and 16 is statistically significant (P = less than 0.001). One of the major clinical symptoms is dyspnoea; we have estimated that almost all seriously dyspnoeic patients have developed at least two categories of chromosomal aberrations, one of which is Robertsonian translocation, in at least 10% metaphases. Our chromosomal survey will be of significance because we are able to identify people with chromosomal aberrations that might be correlated with future pathological consequences of the accident. The "chromosomal load" that can be sustained with an apparently normal phenotype can also be measured.
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159
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Walters MT, Stevenson FK, Goswami R, Smith JL, Cawley MI. Comparison of serum and synovial fluid concentrations of beta 2-microglobulin and C reactive protein in relation to clinical disease activity and synovial inflammation in rheumatoid arthritis. Ann Rheum Dis 1989; 48:905-11. [PMID: 2512862 PMCID: PMC1003912 DOI: 10.1136/ard.48.11.905] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
beta 2-Microglobulin and C reactive protein (CPR) were measured in 33 and 57 matched pairs of serum and synovial fluid (SF) respectively, from patients with active rheumatoid arthritis (RA). Serum beta 2-microglobulin concentrations were higher than in normal controls and the SF concentration was higher than the serum concentration on 25 of 33 occasions (76%), suggesting a local production of beta 2-microglobulin within the synovial membrane. There was a correlation between serum and SF concentrations of beta 2-microglobulin (r = 0.50). Patients' serum CRP concentrations in 57 samples were higher than in normal controls and were greater than in the matched SFs on 49 of the 57 paired samples (86%). In 18 samples CRP was absent in the SF, suggesting a local consumption or binding within the synovial membrane. Twenty four patients with RA given either sodium aurothiomalate or D-penicillamine for six months showed highly significant clinical improvements accompanied by reductions in serum and SF immunoglobulin concentrations and knee joint suprapatellar pouch synovial membrane T lymphocyte infiltrates. In this group of patients serum CRP, but not beta 2-microglobulin, fell significantly, but there were no significant changes in SF beta 2-microglobulin or CRP. These data suggest that serum and SF beta 2-microglobulin concentrations are not a useful index for determining the therapeutic response to sodium aurothiomalate and D-penicillamine and that serum rather than SF CRP concentrations are more helpful. The persistent raised serum and SF concentrations of beta 2-microglobulin probably reflect synovial inflammatory infiltrates, which are still considerable despite apparent clinical remission.
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160
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Goswami R, Krishan K, Suryaprakash B, Vaidyanathan S, Rao K, Rao MS, Goswami AK, Goel AK, Sharma PL. Circadian desynchronization in pulse rate, systolic and diastolic blood pressure, rectal temperature and urine output in traumatic tetraplegics. INDIAN JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY 1985; 29:199-206. [PMID: 3842372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An investigation was undertaken to study the circadian rhythmicity in pulse rate, systolic and diastolic blood pressure, rectal temperature and urine output in eight traumatic tetraplegics in view of the fact that diurnal rhythmicity in prolactin response to thyrotropin-releasing hormone was absent in such patients. The data, analysed by single cosinor procedure, showed absence of rhythmicity in all five parameters. Analysis of variance also showed no significant difference in these parameters at various time points. Knowledge of the alterations in circadian biology subsequent to cervical spinal cord trauma would provide useful guidelines towards chronotherapy and vocational rehabilitation of tetraplegics besides possible restoration of euchronism by pharmacological means.
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161
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Raychowdhury MK, Goswami R, Chakrabarti P. Effect of unsaturated fatty acids in growth inhibition of some penicillin-resistant and sensitive bacteria. THE JOURNAL OF APPLIED BACTERIOLOGY 1985; 59:183-8. [PMID: 3900022 DOI: 10.1111/j.1365-2672.1985.tb03319.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The growth of two penicillin-resistant Gram-positive bacteria, Bacillus licheniformis (749/C, penicillin G-resistant) and Staphylococcus aureus (metR 18, methicillin-resistant) and one Gram-negative strain, Escherichia coli (cloxacillin-resistant) as well as that of their wild counterparts was inhibited by the long-chain unsaturated fatty acids, linoleic, linolenic and arachidonic acid. The minimum inhibitory concentrations (MIC) of all the fatty acids were found to be 4-6 micrograms/ml for Staph. aureus (metR 18 & wild), 8-30 micrograms/ml for B. licheniformis (749/C & wild) and 70-90 micrograms/ml for E. coli (cloxacillin-resistant & wild). The inhibitory activity increased as the number of double bonds in the fatty acids increased. In most instances the concentrations of fatty acids required to inhibit the growth of the penicillin-resistant strains were lower than that required for their sensitive counterparts. This inhibition of growth in the presence of fatty acids may be due to an increase in permeability of the membrane as evidenced by the measurement of the leakage of 260 nm absorbing material and fluidity.
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162
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Raychowdhury MK, Goswami R, Chakrabarti P. A new method of estimation of nystatin by ferric chloride-sulfuric acid reagent. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 1984; 22:447-8. [PMID: 6392079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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163
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Raychowdhury MK, Goswami R, Chakrabarti P. Agglutination of some bacterial cells by concanavalin A. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 1982; 20:748-50. [PMID: 6761268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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164
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Goswami R, Chowdhury MK, Chakrabarti P. Lipid compositions of two penicillin-resistant bacteria, Staphylococcus aureus (met R 18) & Bacillus licheniformis (749/C). INDIAN JOURNAL OF BIOCHEMISTRY & BIOPHYSICS 1982; 19:217-20. [PMID: 7173961] [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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165
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Goswami R, Chowdhury MK, Chakrabarti P. Isolation & characterization of a cloxacillin-resistant Escherichia coli. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 1982; 20:21-5. [PMID: 6749669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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166
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Chowdhury MK, Goswami R, Chakrabarti P. Liposome-trapped penicillins in growth inhibition of some penicillin-resistant bacteria. THE JOURNAL OF APPLIED BACTERIOLOGY 1981; 51:223-7. [PMID: 7028711 DOI: 10.1111/j.1365-2672.1981.tb01236.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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167
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Chowdhury MK, Goswami R, Chakrabarti P. A new rapid agar cup assay of beta-lactam antibiotics in the presence of a chemical reagent. Anal Biochem 1980; 108:126-8. [PMID: 7457851 DOI: 10.1016/0003-2697(80)90701-0] [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: 01/25/2023]
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168
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Goswami R, Harsy SG, Heiman DF, Katzenellenbogen JA. Estrogen receptor based imaging agents. 2. Synthesis and receptor binding affinity of side-chain halogenated hexestrol derivatives. J Med Chem 1980; 23:1002-8. [PMID: 6251218 DOI: 10.1021/jm00183a008] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We have synthesized as potential imaging agents for human breast tumors a series of hexestrol analogues bearing the halogens fluorine, chlorine, bromine, and iodine at the terminus of the hexane chain. The binding affinity of these compounds for the estrogen receptor from uterine tissues forms a monotonically decreasing series, starting at 129% of that of estradiol for the fluoro analogue and decreasing to 60% for the iodo analogue. Such a modest decrease in binding affinity is thought to reflect the preference of the receptor for lipophilic groups and for substituents of moderate steric size at this site, parameters which change in opposite directions in the halogen sequence going from fluorine to iodine. Three estrogenic bis(trifluoromethyl)diphenylethylenes, prepared by DuPont, also showed substantial binding affinities for the estrogen receptor. In terms of ease of radiolabeling and high receptor binding selectivity, the compound that appears to be the most promising candidate for a breast tumor imaging agent in these series is the chain terminal fluorohexestrol.
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169
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Katzenellenbogen JA, Carlson KE, Heiman DF, Goswami R. Receptor-binding radiopharmaceuticals for imaging breast tumors: estrogen-receptor interactions and selectivity of tissue uptake of halogenated estrogen analogs. J Nucl Med 1980; 21:550-8. [PMID: 6247466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Four halogenated estrogen analogs--o-fluorohexestrol, and 1-fluoro-, 1-bromo-, and 1-iodohexestrol--have been prepared and tritium-labeled in high specific activity, to investigate their potential as estrogen-receptor-based agents for imaging breast tumors. These compounds bind with high affinity in vitro to the cytoplasmic uterine estrogen receptor from rat and lamb and sediment as 8S receptor complexes on sucrose gradients. After 1 hr in immature rats, these compounds show high uptake into the uterus, but low uptakes (10--25% of the uterine levels) into most nontarget tissues. The uterine uptake is estrogen specific since it is depressed by excess nonradioactive estradiol. Uptake selectivity is greatest for the fluorohexestrols and decreases for the bromo and iodo compounds. In mature rats bearing DMBA-induced mammary tumors, selective uptake by the uterus and tumors is seen with 1-fluoro[3H4]hexestrol and o-fluoro[3H3]hexestrol. The studies indicate that these four halogenated hexestrols are promising candidates as estrogen-receptor-based agents for the imaging of human breast tumors.
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