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Chakraborty M, Anderson GM, Chakraborty A, Chatterjee D. Accumulation of high level of pp60c-srcN is an early event during GM3-antibody mediated differentiation of neuro-2a neuroblastoma cells. Brain Res 1993; 625:197-202. [PMID: 7506109 DOI: 10.1016/0006-8993(93)91059-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Neuro-2a neuroblastoma cells, when differentiated via a cAMP-dependent pathway by treatment with anti-GM3 monoclonal antibody, accumulated a high level of pp60c-src protein and pp60c-src kinase activity just before the onset of neurite formation. The specific kinase activity of the accumulated c-src protein was found to be comparable to that of normal cerebellar neurons, but was about 6- to 8-fold higher than that of normal astrocytes. These results, and migrations of peptide fragments in the SDS-polyacrylamide gels after V8 proteolysis, strongly indicate the accumulation of the neuron-specific isoform of the c-src protein (pp60c-srcN) in the GM3 antibody-treated Neuro-2a cells. Similar high levels of pp60c-src protein and pp60c-src kinase activity were observed in the Neuro-2a cells differentiated via a cAMP-dependent pathway by treatment with dibutyryl cAMP, but not in the same cell line when differentiated via a cAMP-independent pathway with 5-bromo-2'-deoxyuridine. These results demonstrate that the accumulation of high levels of the neuron-specific isoform of the pp60c-src protein (pp60c-srcN) in the Neuro-2a neuroblastoma cells depends on the specific signal transduction pathway involved during the differentiation of these cells.
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Baral R, Chakraborty A, Maity P. Alterations in large gut associated lymphatic tissues (LGALT) during experimental colorectal carcinogenesis. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 1993; 31:793-6. [PMID: 8276429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Alterations in large gut associated lymphatic tissues (LGALT) were studied histologically during 20-methylcholanthrene (MCA) induced colorectal carcinogenesis. Precancerous changes in LGALT included hyperplasia, hyperchromasia of lymphocytes and enlargement of lymphoid follicles. In addition, follicular invasion in muscular layer and cellular disorganization of diffuse lymphatic tissues were observed in neoplasia. Since, LGALT showed remarkable changes during carcinogenesis, this aspect may be considered during assessment of preneoplastic lesions, along with other histologic features of early neoplasia.
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253
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Ali AA, Marcus JN, Harvey JP, Roll R, Hodgson CP, Wildrick DM, Chakraborty A, Boman BM. RB1 protein in normal and malignant human colorectal tissue and colon cancer cell lines. FASEB J 1993; 7:931-7. [PMID: 8344490 DOI: 10.1096/fasebj.7.10.8344490] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The pattern of human retinoblastoma (RB1) gene protein expression was directly examined in normal and malignant human colorectal tissues and in seven colorectal carcinoma cell lines by immunohistochemistry using the mouse monoclonal antibody (RB-MAb-1) directed against the retinoblastoma protein (RB). This is the first demonstration of RB immunostaining in adult human colonic epithelium and colorectal carcinomas. Specificity using RB-MAb-1 was confirmed by western blot analysis, which showed bands of 110-116 kDa corresponding to the sizes of unphosphorylated and phosphorylated RB. RB staining of normal adult colonic epithelium was confined to the nucleus and was most intense in the transitional zone of the crypt, whereas lumenal cells (fully differentiated) were RB negative. Primary colorectal carcinomas and all the colon cancer cell lines stained positively for nuclear RB, but the expression was heterogeneous with varying fractions of RB negative cells present. Because we and others have previously shown that loss or inactivation of the RB1 gene is infrequent in colorectal carcinomas, reduced RB expression in such cells is probably due to a cellular regulatory mechanism. For example, RB negative cells may be those in early-G1 phase (known to have reduced RB levels) or growth-arrested cells that have differentiated. The ability to directly detect RB in primary colorectal carcinomas will permit assessment of whether heterogeneous expression of the RB1 gene product has prognostic significance for survival of patients with this cancer.
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254
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Ray MK, Chakraborty A, Datta B, Chattopadhyay A, Saha D, Bose A, Kinzy TG, Wu S, Hileman RE, Merrick WC. Characteristics of the eukaryotic initiation factor 2 associated 67-kDa polypeptide. Biochemistry 1993; 32:5151-9. [PMID: 8098621 DOI: 10.1021/bi00070a026] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A eukaryotic initiation factor 2 (eIF-2) associated 67-kDa polypeptide (p67) protects the eIF-2 alpha-subunit from eIF-2 kinase(s) catalyzed phosphorylation, and this promotes protein synthesis in the presence of active eIF-2 kinase(s), [Datta, B., et al. (1988) Proc. Natl. Acad. Sci. U.S.A. 85, 3324-3328]. This report presents the results of studies related to characteristics of p67 action and the mechanism of p67:eIF-2 interaction: (1) p67 antibodies inhibited protein synthesis in hemin-supplemented rabbit reticulocyte lysates, and such inhibition was reversed by preincubation of the antibodies, specifically with p67. (2) p67 inhibited HRI- and dsI-catalyzed phosphorylations of the eIF-2 alpha-subunit and histones, but it did not inhibit casein kinase catalyzed phosphorylation of the eIF-2 beta-subunit. (3) p67 bound specifically to the eIF-2 gamma-subunit. p67 co-immunoprecipitated with the eIF-2 subunits when a p67/eIF-2 mixture was treated with p67 or eIF-2 subunit antibodies and protein A agarose. However, when eIF-2 was preincubated specifically with the eIF-2 gamma-subunit antibodies, subsequent co-immunoprecipitation of p67 with the eIF-2 subunits was completely inhibited. Similarly, preincubation of p67 and p67 antibodies prevented subsequent p67 binding to eIF-2. Preincubation of eIF-2, with either eIF-2 alpha- or beta-subunit antibodies, had no effect on p67 co-immunoprecipitation with the eIF-2 subunits. (4) p67:eIF-2 interaction is necessary for p67 activity to protect the eIF-2 alpha-subunit from eIF-2 kinase(s) catalyzed phosphorylation.(ABSTRACT TRUNCATED AT 250 WORDS)
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Broor S, Husain M, Chatterjee B, Chakraborty A, Seth P. Temporal variation in the distribution of rotavirus electropherotypes in Delhi, India. JOURNAL OF DIARRHOEAL DISEASES RESEARCH 1993; 11:14-8. [PMID: 8391036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The present study was carried out to investigate the varying pattern of rotavirus electropherotypes in Delhi, India. During a 25-month study period, rotavirus was detected in 104 of 990 (10.5%) samples collected from children with acute gastroenteritis, except in the months of June 1988, June 1989, October 1989, January 1990 and March 1990. Viral RNA migration was studied by PAGE in 83 rotavirus positive samples, and 69 (83.1%) of them gave a discernible RNA pattern. A "long" RNA pattern was observed in 58 (84%) and a "short" RNA pattern in 11 (16%) samples. There were three major electropherotypes among the "long" RNA types and two major electropherotypes among the "short" RNA RNA types. Sequential appearance of electropherotypes was seen with every seasonal peak of infection.
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256
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Chakraborty AK, Chakraborty A, Chakraborty DP. Hydroquinone simultaneously induces indole amine 2,3 dioxygenase (IOD) and inhibits tyrosinase in Bufo melanostictus. Life Sci 1993; 52:1695-8. [PMID: 8502114 DOI: 10.1016/0024-3205(93)90477-k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Hydroquinone administration in Bufo melanostictus causes an induction of indole amine 2,3-dioxygenase in skin and liver while simultaneously inhibiting tyrosinase in these organs. The result is discussed with the reports of higher urinary excretion of abnormal indole metabolites including derivatives of anthranilic acid in vitiliginous subjects (Roychoudhury and Chakraborty, Clinica. Chim. Acta 22, 298, 1968; Kurbanov and Berezov, Vopr. Med. Khim. 22, 683, 1976).
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257
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Chatterjee TK, Chakraborty A, Pathak M, Sengupta GC. Effects of plant extract Centella asiatica (Linn.) on cold restraint stress ulcer in rats. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 1992; 30:889-91. [PMID: 1293014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Extract of C. asiatica (Linn.) inhibited significantly gastric ulceration induced by cold and restraint stress (CRS) in Charles-Foster rats, Antiulcer activity of plant extract was compared with famotidine (H2-antagonist) and sodium valproate (anti-epileptic). Plant extract, formotidine and sodium valproate showed a dose dependent reduction of gastric ulceration. Plant extract increased brain GABA level which was also dose dependent. Pretreatment with bicuculline methiodide (specific GABAA-antagonist) at the dose level of 0.5 mg/kg im, reversed the antiulcerogenic activity of both plant extract and sodium valproate. Bicuculline as such did not induce gastric ulceration in normal rat.
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258
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Chakraborty A. Psychiatry in India. THE NATIONAL MEDICAL JOURNAL OF INDIA 1992; 5:184-6. [PMID: 1304307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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259
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Ray MK, Datta B, Chakraborty A, Chattopadhyay A, Meza-Keuthen S, Gupta NK. The eukaryotic initiation factor 2-associated 67-kDa polypeptide (p67) plays a critical role in regulation of protein synthesis initiation in animal cells. Proc Natl Acad Sci U S A 1992; 89:539-43. [PMID: 1346232 PMCID: PMC48274 DOI: 10.1073/pnas.89.2.539] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The eukaryotic initiation factor 2 (eIF-2)-associated 67-kDa polypeptide (p67) isolated from reticulocyte lysate protects the eIF-2 alpha subunit from eIF-2 kinase-catalyzed phosphorylation and promotes protein synthesis in the presence of active eIF-2 kinases. We have now studied the roles of p67 and eIF-2 kinases in regulation of protein synthesis using several animal cell lysates and an animal cell line (KRC-7) in culture under various growth conditions. The results are as follows. (i) Both p67 and eIF-2 kinase(s) are present in active forms in all animal cells under normal growth conditions and p67 protects the eIF-2 alpha subunit from eIF-2 kinase-catalyzed phosphorylation, thus promoting protein synthesis in the presence of active eIF-2 kinases. (ii) In heme-deficient reticulocyte lysates and in serum-starved KRC-7 cells in culture, p67 is deglycosylated and subsequently degraded. This leads to eIF-2 kinase-catalyzed eIF-2 alpha-subunit phosphorylation and thus to protein synthesis inhibition. (iii) Addition of a mitogen (namely, phorbol 12-myristate 13-acetate) to serum-starved KRC-7 cells in culture induces an increase of p67 and thus increases protein synthesis. These results suggest the following conclusions. (i) Protein synthesis inhibition in a heme-deficient reticulocyte lysate is not due to the activation of an eIF-2 kinase (heme-regulated inhibitor), as is generally believed, but is due to degradation of p67. The heme-regulated inhibitor is present in an active form and possibly in equal amounts in both heme-deficient and heme-supplemented reticulocyte lysates but cannot phosphorylate eIF-2 alpha subunit because of the presence of p67. (ii) p67 is essential for protein synthesis as it protects the eIF-2 alpha subunit from eIF-2 kinase-catalyzed phosphorylation and promotes protein synthesis in the presence of one or more active eIF-2 kinases present in all animal cells. (iii) p67 is both degradable and inducible. Only the p67 level correlates directly with the protein synthesis activity of the cell, indicating that p67 is a critical factor in protein synthesis regulation in animal cells.
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260
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Chakraborty A. Cultural perspective in Indian psychiatry. Indian J Psychiatry 1992; 34:1-2. [PMID: 21776086 PMCID: PMC2980973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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261
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Chakraborty A, Eghbali M. An immunoassay for qualitative estimation of collagenase activity in mammalian tissues. Clin Biochem 1991; 24:455-61. [PMID: 1663430 DOI: 10.1016/s0009-9120(05)80002-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Collagen, the most abundant protein of the mammalian body, is specifically degraded by collagenase. Collagenase activity and subsequent collagen degradation are the main aspects of essential biological processes such as bone remodeling, tissue repair and wound healing. Measurement of collagenase activity is of interest to a wide variety of investigations using mammalian tissues, including clinical specimens. Most assays for collagenase activity are based on chemical modification of the substrate collagen. A unique feature of the present method is that it allows the rapid, qualitative measurement of collagenase activity without the requirement of substrate modification. It is based upon both substrate digestion by collagenase and reaction of undigested collagen with its antibody. Collagenase activity is measured by quantitation of immunoreactivity of undigested collagen using an enzyme-linked immunosorbent assay (ELISA). The assay is performed in 96-well microtiter plates used for ELISA. The advantages of this method are several: (a) a highly specific reaction between substrate collagen and its antibody that rules out the possibility of nonspecific quantitation; (b) the use of a nonmodified substrate; (c) the ease and rapidity of performance of a microassay. Application of the microassay to mammalian tissue homogenates was demonstrated in rat uterus tissue and ventricular myocardium of normal and hypertensive rats.
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262
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Chakraborty A, Sharma SC, Behera D, Negi PS. Effect of radiation on pulmonary functions in patients with breast cancer. THE INDIAN JOURNAL OF CHEST DISEASES & ALLIED SCIENCES 1991; 33:195-200. [PMID: 1818843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
There is no systematic study available from our country regarding pulmonary function tests in patients of breast cancer who receive postoperative radiotherapy. Therefore, we planned a prospective study to find out the effect of radiation on pulmonary functions in patients with breast cancer; who had undergone surgery in the form of simple mastectomy and axillary clearance. Transient radiological changes were seen in two cases and one patient had fibrosis at 9 months.
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263
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Chakraborty A, Dutta P, Deb B. Maintenance therapy for hospital out-patients. Indian J Psychiatry 1991; 33:281-5. [PMID: 21897471 PMCID: PMC2988313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A study of dosage requirements undertaken among chronic OPD patients found on unnecessarily high drug dosage regimes. Basing on OPD experiences authors discuss long term treatment strategies and strongly advocate low dose intermittent oral therapy.
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264
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265
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Javadi HH, Chakraborty A, Li C, Theophilou N, Swanson DB, MacDiarmid AG, Epstein AJ. Highly conducting polyacetylene: Three-dimensional delocalization. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:2183-2186. [PMID: 9997489 DOI: 10.1103/physrevb.43.2183] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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266
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Chakraborty A. Psychotropic drugs in a new perspective. JOURNAL OF THE INDIAN MEDICAL ASSOCIATION 1990; 88:333-4. [PMID: 2074348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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267
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Chakraborty A, Epstein AJ, Lawless WN, Miller JS. Specific heat of decamethylferrocenium tetracyanoethanide (DMeFc)(TCNE). PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:11422-11424. [PMID: 9991735 DOI: 10.1103/physrevb.40.11422] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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268
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Chakraborty A, Epstein AJ, Jarrell M, McCarron EM. Magnetic ordering in La2Cu1-xZnxO4-y. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:5296-5299. [PMID: 9992556 DOI: 10.1103/physrevb.40.5296] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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269
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Chakraborty A, Epstein AJ, Cox DL, McCarron EM, Farneth WE. Specific heat of Bi2Sr2CuO6 and Bi2Sr2CaCu2O8 in the superconducting state. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 39:12267-12270. [PMID: 9948064 DOI: 10.1103/physrevb.39.12267] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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270
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Sanyal R, Chakraborty A, Ghosh D. Primary carcinoma of the fallopian tube with torsion. JOURNAL OF THE INDIAN MEDICAL ASSOCIATION 1989; 87:145-6. [PMID: 2584734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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271
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Chakraborty A, Eghbali M. Collagenase activity in the normal rat myocardium. An immunohistochemical method. HISTOCHEMISTRY 1989; 92:391-6. [PMID: 2555318 DOI: 10.1007/bf00492496] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Fibrillar collagen in the myocardium provides a supportive framework for myocytes and capillaries. Disruption of this organized framework has been observed in certain pathological states. Collagen degradation is primarily mediated by the specific enzyme collagenase, which has been found to exist in various tissues including the myocardium. In this report we describe a method that detects collagenase activity in sections of cardiac tissue. This method is on the basis of degradation of collagen by collagenase on one hand and the visualization of disrupted collagen fibers by immunofluorescence on the other. Frozen rat heart sections were incubated under optimal conditions for collagenase activity (37 degrees C in the presence of 0.1 M calcium at pH 7.4) for 24 h and 48 h. Subsequently, immunofluorescence staining with antibody to type I collagen was performed and the collagenous structures were visualized by immunofluorescence light microscopy. As control, untreated rat heart sections and sections incubated in the absence of calcium were similarly treated with antibody. After the 24 h of incubation, we found no change in the structural integrity of collagen fibers. Marked disruption of the type I collagen fibers was observed 48 h after incubation. No evidence of collagen fiber disruption was found in control sections. Experiments with exogenous collagenase resulted in similar collagen fiber disruption in the frozen rat heart sections. We conclude that the disruption of collagen type I fibers after 48 h of incubation, under optimal conditions for collagenolytic digestion, is the result of collagen degradation by intrinsic collagenase of the myocardium.
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272
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Chakraborty A, Forker A, Reese H, Casey J. Tracheobronchitis and pneumonia due to herpes simplex virus (HSV) infection. THE NEBRASKA MEDICAL JOURNAL 1988; 73:347-50. [PMID: 3265485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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273
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Mandal P, Poddar A, Das AN, Chakraborty A, Ghosh B, Choudhury P, Lahiri SK. Magnetoresistance and thermoelectric power of the Bi-Sr-Ca-Cu-O system. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 38:9205-9208. [PMID: 9945713 DOI: 10.1103/physrevb.38.9205] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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274
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Mitra S, Roy DN, Biswas TK, Pal S, Chakraborty A, Das D, Mondal PS, Das PK, Biswas AK. A case of tuberculous haemorrhagic pericardial effusion with some therapeutic problem. Indian Heart J 1987; 39:365-9. [PMID: 3455400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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275
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Chakraborty A, Mondal PR, Kundu SC, Batabyal SK. Serum lipids and lipoproteins in diabetic retinopathy. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 1986; 34:631-2. [PMID: 3793696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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276
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Chakraborty A, Chatterjee R. Prevention of growth of transplanted sarcoma in mice by vitamin C. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 1985; 23:472-3. [PMID: 4077146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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277
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Chakraborty A, Chatterjee R, Chowdhury JR. Studies on concanavalin A receptor sites of tumour cells following ultraviolet exposure. Oncology 1984; 41:61-3. [PMID: 6322087 DOI: 10.1159/000225792] [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: 01/19/2023]
Abstract
Alteration of surface receptor of Ehrlich tumour cells by concanavalin A (Con A), shortwave UV and UV plus Con A have been studied. DNA of nuclear chromatins is highly sensitive to UV but receptor glycoprotein sites are UV resistant as evidenced by their retention of agglutination properties after radiation. Con A and UV plus Con A treatments of tumour cells delay the in vivo growth of solid tumour which may be due to some immunological mechanism.
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278
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Talwar V, Gupta HC, Chakraborty A. Deoxyribonuclease & heat stable nuclease tests for identification of Staphylococcus aureus. Indian J Med Res 1984; 79:19-21. [PMID: 6373582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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279
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Chakraborty A. An epidemic of koro in west bengal (India). Indian J Psychiatry 1983; 25:138-9. [PMID: 21847272 PMCID: PMC3012338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
An epidemic of Koro which occured in West Bengal has been described. Theories for the genesis of Koro as epidemic have been discussed. It has been shown that the present epidemic was related to social tensions.
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280
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Sen S, Chakraborty A. Acute inflammatory polyneuropathy. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 1982; 30:459-61. [PMID: 7169471] [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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281
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Chakraborty A, Gangadharam PR, Damle P, Pratt P, Wright P, Davidson PT. Antituberculosis activity of 6 cyclo-octylamino-5,8-quinolinequinone (CQQ). TUBERCLE 1981; 62:37-41. [PMID: 6791340 DOI: 10.1016/0041-3879(81)90033-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A new compound, 6 cyclo-octylamino-5,8-quinolinequinone (CQQ), a dual analogue of vitamin K and coenzyme Q, was effective against several drug-susceptible and drug-resistant strains of Mycobacterium tuberculosis. In vitro studies indicated the bactericidal nature of its action at 1 microgram/ml. Pulse exposure studies using M. tuberculosis H37Rv showed that a growth lag period of 96 hours resulted with exposure to 1 microgram/ml for 24 hours or longer.
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282
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Chakraborty A, Meyer TJ. Remission of cerebellar dysfunction after pneumonectomy for bronchogenic carcinoma. N Engl J Med 1980; 302:1309-10. [PMID: 7366697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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283
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Chakraborty A, Kwatra MS. Serological study on bovine brucellosis and it histopathology in reproductive organs of nonpregnant slaughtered cows. INDIAN J PATHOL MICR 1980; 23:125-8. [PMID: 7450823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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284
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Chakraborty A, Mishra SP, Mehrotra Y. An unusual presentation of an intra-abdominal foreign in body. JOURNAL OF THE INDIAN MEDICAL ASSOCIATION 1975; 65:18-20. [PMID: 1102613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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285
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Chatterjee SK, Chakraborty A, Daruka M. Repair of oesophageal atresia with tracheo-oesophageal fistula. A one and a half years' follow-up. JOURNAL OF THE INDIAN MEDICAL ASSOCIATION 1972; 59:478 passim. [PMID: 4656364] [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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286
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Chakraborty A. Yoga and psychoanalysis. Br J Psychiatry 1970; 117:478. [PMID: 5481214 DOI: 10.1192/bjp.117.539.478-a] [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: 01/15/2023]
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287
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Talukdar PB, Banerjee S, Chakraborty A. Studies on Dithiocarbamates. XII. Kinetic Studies on the Hydrolysis of Mesoionic 4,5-Diphenyl-1,3,4-thiadiazole. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1970. [DOI: 10.1246/bcsj.43.125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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