601
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Gopal R, Advani SH, Arora S, Nair CN, Saikia TK, Pai SK, Nadkarni KS, Kurkure PA, Pai VR, Pande SC. Non-Hodgkin's lymphomas in children, clinical histological and treatment analysis. Indian J Cancer 1987; 24:202-9. [PMID: 3505508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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602
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Ray A, Arora S, Plaut AG, Rocklin RE. Sustained B-lymphocyte immunodeficiency attributed to phenytoin therapy. J Allergy Clin Immunol 1987; 80:752-3. [PMID: 3500198 DOI: 10.1016/0091-6749(87)90298-3] [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: 01/06/2023]
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603
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Arora RC, Agarwal N, Arora S, Garg RK, Gupta G. High fat and cholesterol diet induced changes in plasma cholesterol and lipoprotein in healthy human volunteers. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 1987; 35:774-5. [PMID: 3449515] [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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604
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Arora S, Nair CN, Gopal R, Saikia T, Nadkarni KS, Das Gupta A, Advani SH. Primary plasma cell leukaemia. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 1987; 35:733-5. [PMID: 3328747] [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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605
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Arora RC, Agarwal N, Arora S, Mehra V, Garg RK. Triglyceride tolerance test. Is it feasible? MATERIA MEDICA POLONA. POLISH JOURNAL OF MEDICINE AND PHARMACY 1987; 19:88-9. [PMID: 3448424] [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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606
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Arora RC, Agarwal N, Arora S, Garg RK, Mehra V. Triglyceride tolerance test: is it feasible? THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 1987; 35:276-8. [PMID: 3654524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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607
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Kaplan MM, Arora S, Pincus SH. Primary sclerosing cholangitis and low-dose oral pulse methotrexate therapy. Clinical and histologic response. Ann Intern Med 1987; 106:231-5. [PMID: 2948435 DOI: 10.7326/0003-4819-106-2-231] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Two patients with sclerosing cholangitis responded to low-dose methotrexate treatment. A 40-year-old man who had previously undergone total colectomy for ulcerative colitis presented with refractory erythroderma and sclerosing cholangitis. Both disorders were alleviated and have remained in remission on methotrexate, 5 mg every 12 hours three times each week (15 mg/wk). Liver function improved, bile duct scarring did not worsen, and repeat liver biopsy samples have shown striking improvement. A 60-year-old man with long-standing ulcerative colitis and repeated exacerbations of sclerosing cholangitis had a similar response to low-dose methotrexate, 2.5 mg every 12 hours three times each week (7.5 mg/wk), during a 6-year period. Recurrent episodes of cholangitis have disappeared, liver function has become normal, bile duct scarring has not worsened, and liver histologic findings have become normal. Because of the potential hepatotoxicity of methotrexate, we suggest that a prospective, randomized trial be done.
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608
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Arora S, Kaplan M. Portal hypertension in early-stage primary biliary cirrhosis: a possible explanation. Am J Gastroenterol 1987; 82:90-1. [PMID: 3799588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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609
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Datta U, Gupta S, Arora S, Sehgal S. Diagnostic problems of kala azar in non-endemic area. INDIAN J PATHOL MICR 1987; 30:23-9. [PMID: 3315993] [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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610
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Arora RC, Agarwal N, Arora S, Gupta GC. A study of high fat and cholesterol diet induced changes in plasma cholesterol and lipoprotein in healthy human volunteers--vegetarians. MATERIA MEDICA POLONA. POLISH JOURNAL OF MEDICINE AND PHARMACY 1986; 18:198-202. [PMID: 3613679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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611
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Mistry S, Mistry NP, Arora S, Antia NH. Cellular immune response following thermal injury in human patients. Burns 1986; 12:318-24. [PMID: 2942227 DOI: 10.1016/0305-4179(86)90101-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Cellular immune response was studied longitudinally for a period of 1 month in a group of 51 patients sustaining burns between 20 and 55 per cent of their body surface area. The results indicated lymphocytopenia and significant depression in the total T cells in all the patients. T cells showed a significant rise in their levels in those patients who showed clinical improvement. Further, the loss of expression of 'E' receptor correlated with the lowering of the protein-synthesizing capacity of the mononuclear cells. The functional integrity of the lymphocytes also showed an inability to recognize and stimulate normal alloantigens in an MLR reaction. Investigation of the mechanisms responsible for immunosuppression revealed the generation of T suppressor activity.
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612
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Abstract
An attempt was made to establish an animal model for analysing the cellular immune alterations following thermal injury and to correlate the results with those obtained in humans. A standard burn involving 20 per cent of the body surface area was established in C57 black mice (b1). The results revealed a loss of total T cells until post-burn day 10 and an increase in B cells only during post-burn day 1. The lymphocyte proliferative response to PHA was elevated with the appearance of null cells on post-burn day 10. This observation revealed a generalized depression in the immune responses which was significant until post-burn day 10. However, the results were not comparable with the human studies.
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613
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Arora S, Ramaswamy NK, Nair PM. Partial purification and some properties of a latent CO2 reductase from green potato tuber chloroplasts. EUROPEAN JOURNAL OF BIOCHEMISTRY 1985; 153:509-14. [PMID: 3841062 DOI: 10.1111/j.1432-1033.1985.tb09331.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We have partially purified the CO2 reductase, present in green potato tuber chloroplasts, as a latent form. Illumination of the chloroplasts in the absence of substrate, bicarbonate, activated the enzyme, which could then be obtained in soluble forms. Purification of the enzyme was achieved by (NH4)2SO4 fractionation (0-30%) and adsorption and elution from a DEAE-Sephadex A-50 column. The final preparation showed 15-fold purification and 50% recovery of the activity. The pH optimum for CO2 reductase was 8.0. Hepes and Tricine buffers showed maximum activity whereas Tris/phosphate or borate failed to show any activity. The enzyme reaction was sensitive to the presence of metal ions like Fe3+, Hg2+, Cu2+, Mo6+ and Zn2+, however, a threefold activation was observed with Fe2+. The metal requirement for CO2 reductase was evident from the observed inhibition by metal chelators like o-phenanthroline, alpha, alpha'-dipyridyl, bathocuproine, 8-hydroxyquinoline etc. Out of these o-phenanthroline was the strongest inhibitor and its concentration for 50% inhibition was 40 microM. The presence of Fe2+ ions in the reaction mixture protected the enzyme from heat denaturation upto 50 degrees C. Maximum enzyme activity was observed at 15 degrees C. The enzyme activity showed a 30-s lag period and the maximum was reached in 90 s. Supplementation of sodium dithionite in the reaction activated enzyme activity threefold, suggesting involvement of dithiol groups in the catalytic activity. There was strong inhibition by -SH inhibitors like 5,5'-dithiobis(2-nitrobenzoic acid) and N-ethylmaleimide and -SH reagents like dithiothreitol, 2-mercaptoethanol and cysteine. Various nucleotide coenzyme tried inhibited the enzyme strongly.
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614
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Mistry SS, Mistry NF, Arora S, Antia NH. Burn sera mediated effects on the E-rosetting property of normal active T1 cells. Burns 1985; 12:97-101. [PMID: 3879194 DOI: 10.1016/0305-4179(85)90034-8] [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: 01/07/2023]
Abstract
This study investigates the suppressive effects of burn sera on normal active T1 cells. The results revealed that burn sera collected from survivors and non-survivors during the initial 'shock' phase caused varied effects on the 'E' rosetting properties of normal active T1 cells. However, unlike non-survivor sera convalescent or recovery sera failed to block the 'E' rosetting property of T1 cells. Furthermore, cold incubation in fetal calf sera (FCS) failed to abrogate the loss of T1 cells which were exposed to non-survivor (early) sera; these samples also revealed the presence of antigenic factors. Our experiments were extended to investigate the mechanisms resulting in the irreversible change, and showed that the inhibiting factors could be acting at the microtubular level of the cell cortex.
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615
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Arora RC, Arora S, Nigam P. Rationale of garlic use in ischemic heart disease? MATERIA MEDICA POLONA. POLISH JOURNAL OF MEDICINE AND PHARMACY 1985; 17:48-50. [PMID: 4033224] [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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616
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Abstract
A new method for reconstruction of "malignant" contracture of the eye socket is described using a simple procedure based on the principle of epithelial inlay. The lining consists of a free skin graft. No cumbersome external appliances for the prevention of contraction of the graft are used; hence the hospitalization is minimized. The results have been satisfactory.
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617
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Jeyapaul J, Mehta LN, Arora S, Antia NH. Fc and complement receptor integrity of polymorphonuclear (PMN) cells following thermal injury. Burns 1984; 10:387-95. [PMID: 6434163 DOI: 10.1016/0305-4179(84)90077-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In patients sustaining thermal injury, a sequential study was formulated to evaluate Fc and complement receptor expression of polymorphonuclear cells (PMN). Additionally, the role of factors in burn sera and maturity of PMN cells in the circulation were studied. The salient features of the study were: Marked reduction in Fc receptor expression by the 5th day of injury in both survivors and non-survivors. Thereafter levels gradually increased in survivors, though they were still below the normal range. In non-survivors, the depression was severe and persistent. In contrast to Fc receptor expression, complement receptor integrity was not grossly affected in both survivors and non-survivors. Burn sera collected from survivors on the 5th and 13th post-burn day showed reduction in Fc receptor expression of normal PMN cells, whereas sera obtained a month after the injury exhibited no inhibitory effect. Non-survivors sera inhibited Fc receptor expression of normal PMN cells on 5th, 13th and 21st post-burn days. The appearance, increase and disappearance of immature PMN cells in the circulation was correlated with the clinical progress of the patient. Mechanisms involved in the aberrations and its implications are discussed.
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618
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Arora S, Prabhakar H. A study of pathogenicity of Escherichia coli isolated from different sources. INDIAN J PATHOL MICR 1984; 27:57-62. [PMID: 6392092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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619
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Rao KC, Chiantella NM, Arora S, Gellad F. Intracranial venous aneurysms: vein of Galen and other similar vascular anomalies. THE JOURNAL OF COMPUTED TOMOGRAPHY 1983; 7:345-50. [PMID: 6641260 DOI: 10.1016/0149-936x(83)90056-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Aneurysmal dilatation of the vein of Galen is peculiar to arteriovenous malformation around the midbrain. Similar venous aneurysms may rarely occur in other regions. This paper deals with the radiographic findings in three cases of vascular malformation associated with giant venous aneurysms. The pathophysiology resulting in aneurysmal venous dilatation is discussed based on our material and those previously reported.
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620
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Grimes PE, Arora S, Minus HR, Kenney JA. Dermatosis papulosa nigra. Cutis 1983; 32:385-6, 392. [PMID: 6226495] [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]
Abstract
The incidence and natural history of dermatosis papulosa nigra was assessed in eighty-two black patients. The overall incidence in the study population was 77 percent, with a predominance in women of almost 2:1. Fifty-four percent of these patients reported that other members of their families were also affected. The peak incidence and number of lesions occurred in those patients in their sixties. Fair-complexioned blacks had the lowest frequency of involvement. These findings confirm those of other investigators; however, we report a higher than average incidence of involvement in the population we studied.
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621
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Arora S, Rao KC, Gellad F. Microglioma--unusual computed tomographic appearance and course of neoplasm. THE JOURNAL OF COMPUTED TOMOGRAPHY 1983; 7:251-8. [PMID: 6349937 DOI: 10.1016/0149-936x(83)90088-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Microglioma accounts for 0.8-1.5% of primary brain tumors. Eight cases of primary lymphoma of brain are presented. 50% of the patients demonstrated unusual computed tomographic appearances. These patients were divided into three groups depending on clinical outcome. Survival seems to be related to treatment modality. Longest survival times were in patients treated with radiation alone or radiation following biopsy.
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622
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Gellad F, Rao KC, Arora S, Chiantella N, Salcman M. Epidermoid tumor of the fourth ventricle: use of metrizamide-computed tomography. THE JOURNAL OF COMPUTED TOMOGRAPHY 1982; 6:231-235. [PMID: 6984380 DOI: 10.1016/0149-936x(82)90037-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
This report describes two cases of epidermoid tumor of the fourth ventricle diagnosed with metrizamide computed tomography. They both presented as a low-density lesion in the region of the fourth ventricle on computed tomography. They did not show any enhancement after intravenous injection of contrast medium and had no hydrocephalus. Metrizamide-enhanced computed tomography demonstrated the irregular fourth-ventricular filling defect characteristic of epidermoid tumors.
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623
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Arora S, Tafreshi M, Sobo S, Krochmal P, Alexander LL. Accidental overdose intoxication: a hazard of drug smuggling. J Natl Med Assoc 1982; 74:663-6. [PMID: 7120497 PMCID: PMC2552908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Three patients involved in illicit drug smuggling via the swallowing of high dose, high purity drugs packed in multiple condoms are reported. Two of these patients experienced drug overdose symptoms due to leakage or rupture of the condoms in the GI tract. They were treated successfully.
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624
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Arora S, Rao KC, Gellad F. MICROGLIOMA. Invest Radiol 1982. [DOI: 10.1097/00004424-198207000-00042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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625
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Mistry S, Mistry M, Jeyapaul J, Arora S, Antia NH. Appearance of the sheep red blood cell receptor on burn T-lymphocytes after cold incubation in fetal calf serum - a possible prognostic test. Burns 1982; 8:238-44. [PMID: 6978170 DOI: 10.1016/0305-4179(82)90003-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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