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Jauregui HO, Bengochea L, Naik S, Driscoll JL. P-450 activity in monolayer cultures of hepatocytes seeded in polystyrene tissue culture dishes. ASAIO TRANSACTIONS 1986; 32:357-9. [PMID: 3096357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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252
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Chopra JS, Sawhney IM, Dhand UK, Prabhakar S, Naik S, Sehgal S. Neurological complications of acute haemorrhagic conjunctivitis. J Neurol Sci 1986; 73:177-91. [PMID: 3701374 DOI: 10.1016/0022-510x(86)90129-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Forty four cases of the neurological complications of acute haemorrhagic conjunctivitis (AHC) seen in India during 1981 epidemic are reported. The disease predominantly affected adult males. The preceding attack of AHC, a latent period, prodromal symptoms of fever, myalgia and root pains followed by acute onset of lower motor neurone paralysis of limbs and/or cranial nerves formed the classical picture of neurological involvement. The recovery was poor and nearly half of the patients remained severely handicapped. Electrophysiological studies showed early appearance of widespread fibrillations and fasciculations, large polyphasic potentials of increased amplitude and reduced interference pattern. Nerve conduction studies were normal in most of the cases. Cerebrospinal fluid (CSF) examination revealed lymphocytic pleocytosis and rise in protein content. Significant antibody titres against enterovirus type 70 (EV 70) were demonstrated in the serum and the CSF. HLA studies showed low occurrence of A2 and B15 HLA antigens. Muscle biopsies revealed neurogenic atrophy and sural nerve biopsies were histologically unremarkable. The similarities of this disease with poliomyelitis and its pathogenesis are discussed.
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253
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Naik S. HLA and gastrointestinal disorders. Indian J Gastroenterol 1986; 5:121-4. [PMID: 3009319] [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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254
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Dey PM, Naik S, Pridham JB. Properties of α-galactosidase II(2) from Vicia faba seeds. PLANTA 1986; 167:114-118. [PMID: 24241740 DOI: 10.1007/bf00446377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/1985] [Accepted: 09/02/1985] [Indexed: 06/02/2023]
Abstract
α-Galactosidase II(2) (MW ∼ 43 390) from resting Vicia faba L. seeds had been shown to possess D-glucose/D-mannose-specific lectin activity. Inhibition studies with monosaccharides and an examination of the effects of heat and pH on the catalytic and lectin activities of the enzyme indicate that the enzyme substrate and the lectin haptens bind at different sites on the protein. D-Mannosebinding has been investigated by equilibrium dialysis and spectrophotometrically. Both methods yield Ka values of approx. 3·10(3) M(-1) for the interaction and there would appear to be two mannosebinding sites per molecule of enzyme protein. The lectin properties of V. faba α-galactosidase II(2) have been discussed in relation to both V. faba lectin (favin) and other legume α-galactosidases.
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255
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Jauregui HO, McMillan PN, Driscoll J, Naik S. Attachment and long term survival of adult rat hepatocytes in primary monolayer cultures: comparison of different substrata and tissue culture media formulations. IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY : JOURNAL OF THE TISSUE CULTURE ASSOCIATION 1986; 22:13-22. [PMID: 3944050 DOI: 10.1007/bf02623436] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Long-term monolayer cultures of adult rat hepatocytes were tested for their ability to glucuronize phenol red and to maintain initial levels of cell proteins, glucose consumption, and lactic acid production. Lactate dehydrogenase leakage served as an index of culture status because a high value indicates cell death. Three tissue culture (TC) media formulations were the main variables introduced to determine ideal conditions for cell survival in vitro. Investigations of long-term cultures were preceded by studies of hepatocyte attachment to polystyrene surfaces. This attachment was influenced by the amount of substrate deposited and the number of cells seeded, but not by the uniformity of the substrate coating. A statistical analysis of our data revealed that in the absence of fetal bovine serum (FBS), air dried collagen (ADC) and Biomatrix (BMX) were superior to saline precipitated collagen and fibronectin as attachment substrates. In the presence of 10% FBS, all of the substrates performed equally. Chee's Medium (CEM) proved to be the best for preserving cell proteins over a time course of 28 d and Williams' E medium also performed adequately up to 14 d. The glucuronization of phenol red was at 50% of initial values at Day 7 in CEM-ADC hepatocytes in contrast to 30% for cells in Williams' E medium and 5% for cells grown in Waymouth's. At 14 d glucuronization was still present at 40% of original values in CEM-ADC cells but had ceased in the other two media. When BMX was used, none of the TC media supported glucuronization levels comparable to ADC cells.
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256
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Naik S, Oates JE, Dell A, Taylor GW, Dey PM, Pridham JB. A novel mass spectrometric procedure for the rapid determination of the types of carbohydrate chains present in glycoproteins: application to alpha-galactosidase I from Vicia faba seeds. Biochem Biophys Res Commun 1985; 132:1-7. [PMID: 2415121 DOI: 10.1016/0006-291x(85)90980-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A fast atom bombardment mass spectrometric protocol has been developed to determine the type of oligosaccharide chain present in glycoproteins. The procedure is based on acetolysis of the intact glycoconjugate, extraction of the peracetylated carbohydrate fragments and analysis by fast atom bombardment mass spectrometry. The molecular ions present in the FAB spectra uniquely define the composition of the oligosaccharides with respect to hexose, aminohexose and sialic acid content. High mannose oligosaccharides yield a series of peracetylated hexose oligomers whereas complex-type oligosaccharides afford a series of N-acetyl-lactosamine containing species. Fucosylation is usually not detected but sialylated oligosaccharides are readily identified and the type of sialic acid is also defined. The method has been tested on three glycoproteins of known structure - fetuin, ribonuclease B and erythrocyte Band 3 - and on a glycoprotein of unknown structure - alpha-galactosidase I, an enzyme lectin from Vicia faba. The latter is shown to contain high mannose carbohydrate chains.
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257
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Naik S, Naik SR, Rao PN, Broor SL, Mehta SK, Sehgal S. HLA antigens in North Indians with idiopathic ulcerative colitis. Indian J Gastroenterol 1984; 3:17-8. [PMID: 6598159] [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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258
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Sengupta S, Naik S, Naik SR. HLA antigen frequency in endemic tropical sprue. Indian J Gastroenterol 1983; 2:12-3. [PMID: 6565632] [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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259
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Parashar A, Sehgal S, Naik S, Aikat BK. Role of macrophage-processed antigen in a Plasmodium berghei model. Parasite Immunol 1983; 5:173-81. [PMID: 6341933 DOI: 10.1111/j.1365-3024.1983.tb00735.x] [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: 01/19/2023]
Abstract
The present study demonstrates that malarial parasite could be processed by macrophages in vitro to release 'super antigens'. These super antigens obtained from the peritoneal macrophages were more protective than those processed by the splenic adherent cells. BCG-stimulated macrophages were also able to process the antigens efficiently and these antigens were even superior to those obtained from the unstimulated macrophages. These modified antigens were potent inducers of DFPS to malarial antigens. It is thus concluded that parasite antigens, processed in vitro, carry specific immunogenic potential and are able to protect the recipients to parasite challenge.
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260
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Mittal KK, Naik S. Cytotoxicity of a non-HLA serum towards lymphocytes from blood group B, Lewis negative and ABH secretor individuals. ACTA ANTHROPOGENETICA 1983; 7:249-256. [PMID: 6680662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Seven serum samples from a multiparous Hispanic woman (Cano) were found to be lymphocytotoxic against 2% of the cell donors in a large multiethnic cell panel. The reactivity of these sera segregated independently of the HLA region. The lymphocytotoxicity of Cano sera appeared associated with the simultaneous presence of red cell antigen B, Le (a-b-), and ABH secretor status. It could be adsorbed out by red cells from Cano-reactors, but not by those from Cano-non-reactors. Cano sera are clearly detecting a non-HLA antigen on lymphocytes. The exact relationship between this new immunogenetic system (Cano) and the ABO, Lewis and Secretor systems remains to be elucidated.
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261
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Mittal KK, Naik S, Sansonetti N, Cowherd R, Kumar R, Wong DM. The HLA antigens in Indian Hindus. TISSUE ANTIGENS 1982; 20:223-6. [PMID: 7135384 DOI: 10.1111/j.1399-0039.1982.tb00349.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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262
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Krishna UR, Naik S, Mandlekar A, Gupta KC, Kulkarni VN, Sheth UK. Flurbiprofen in the treatment of primary dysmenorrhoea. Br J Clin Pharmacol 1980; 9:605-8. [PMID: 6992824 PMCID: PMC1430004 DOI: 10.1111/j.1365-2125.1980.tb01087.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
1 In a double-blind crossover study, flurbiprofen produced marked relief of pain which was significantly more than with aspirin and placebo in patients suffering from primary dysmenorrhoea. In contrast, there was no significant difference between the relief of pain obtained with aspirin and placebo. 2 The clinician's overall assessment of efficacy also indicated that flurbiprofen produced better response as compared to aspirin and placebo in these patients with dysmenorrhoea. 3 Both flurbiprofen and aspirin did not produce any apparent adverse effects on blood loss during the menstrual period. 4 In conclusion, the analgesic effect of flurbiprofen seen in this trial establishes the therapeutic usefulness of the drug in the treatment of primary dysmenorrhoea.
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263
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Pennington GW, Naik S. The investigation and treatment of ovulation problems. Ir J Med Sci 1979. [DOI: 10.1007/bf02938183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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264
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Khuroo MS, Naik SR, Sehgal SC, Naik S, Kaushik SP, Katariya RN, Datta DV, Mehta SK. Canidida infection of the upper gastrointestinal tract superadded upon chemical injury with acids. Am J Gastroenterol 1979; 72:276-281. [PMID: 507032 DOI: 10.1111/j.1572-0241.1979.tb04851.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
Two male patients, who presented with Candida albicans infection of the upper gastrointestinal tract, superadded over local mucosal injury due to corrosive chemical agents and chronic alcoholism have been described. Such an association of prior local injury with this type of fungal infection has not been hitherto documented. One of these patients had a gastric antral stricture due to ingestion of concentrated sulfuric acid and Candida esophagitis, whereas the other had severe erosive gastritis and Candida gastritis following ingestion of thiocyanates.
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265
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Naik SR, Kumar L, Naik S, Sehgal S, Rau NR, Vinayak VK. Immunological studies in giardiasis. ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY 1979; 73:291-2. [PMID: 496479 DOI: 10.1080/00034983.1979.11687259] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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266
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Pennington GW, Naik S. The investigation and treatment of ovulation problems. Ir J Med Sci 1979; 148 Suppl 1:67-72. [PMID: 500339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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267
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Bailey DJ, Bradbury MW, France VM, Hedley R, Naik S, Parry H. Cation transport across the guinea-pig placenta perfused in situ. J Physiol 1979; 287:45-56. [PMID: 430428 PMCID: PMC1281480 DOI: 10.1113/jphysiol.1979.sp012644] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
1. The guinea-pig placenta perfused in situ via the umbilical circulation has been used to measure unidirectional fluxes of Na from mother to fetus, and in the reverse direction, with 24Na and 22Na. There was no significant difference between the two fluxes, each being 22 mumole.min-1. 2. Ouabain 10(-5) M in the perfusion fluid had no detectable effect on radioisotopic movements of Na in either direction. 3. Unidirectional fluxes of 42K in both directions were approximately equal at 1.7 mumole.min-1 mother fetus and 1.8 mumole.min-1 in the reverse direction, despite a K concentration of 3.4 mM on the maternal side and 5.0 mM on the fetal side of the placenta. 4. Extraction of 42K and 86Rb from the perfusion fluid was inhibited by 43% by 10(-5) M-ouabain in the fluid. This effect was largely due to a reduction of isotope uptake by the placental tissue. 5. The relative permeabilities of the placenta, mother to fetus, were Rb approximately K (3.2) greater than Na (1.0) greater than Li (0.55). 6. Under the experimental conditions, the electrical potential difference between perfusion fluid and maternal blood was 6 mV (fetus negative). It was shifted towards the positive by a low Na fluid. 7. The results suggest the presence of a dominant Na-K pump (active component towards mother) sited at the maternal-facing membrane of the syncytiotrophoblast together with a subsidiary pump oriented in the opposite direction and probably sited together with a subsidiary pump oriented in the opposite direction and probably sited at the fetal-facing membrane of the syncytiotrophoblast. 8. A high proportion of Na movement particularly towards the fetus is probably passive, occurring through water-filled spaces, whilst K movement is more dependent on active transport.
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268
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Hazra PK, Sehgal S, Naik S, Aikat BK. Human T cell receptors for monkey erythrocytes. Int Arch Allergy Immunol 1979; 58:411-3. [PMID: 108224 DOI: 10.1159/000232220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
To test the specificity of T cell receptors, erythrocytes and lymphocytes of man and rhesus monkey (Macaca mulatta) and erythrocytes of sheep were mixed in four different combinations to observe the rosette formation. During the study, a major proportion of human T cells formed spontaneous rosettes with the erythrocytes of rhesus monkey. A small number of monkey lymphocytes formed rosettes with human group O Rh-negative cells while T cells both of man and rhesus monkey formed rosettes with sheep red blood cells.
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269
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Habibullah CM, Rao GN, Murthy DK, Padmanabhan CG, Kumar N, Chandra V, Jayanarasimulu T, Naik S. Non-cirrhotic portal fibrosis in Andhra Pradesh. (Clinical, radiological, biochemical, haemodynamic, and histological aspects). THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 1978; 26:379-82, v-vi. [PMID: 730718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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270
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Pennington GW, Naik S. Donor insemination: report of a two-year study. BRITISH MEDICAL JOURNAL 1977; 1:1327-30. [PMID: 861604 PMCID: PMC1607174 DOI: 10.1136/bmj.1.6072.1327] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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271
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Parashar A, Aikat BK, Sehgal S, Naik S. Cell mediated and humoral immunity in experimental Plasmodium berghei infection. Trans R Soc Trop Med Hyg 1977; 71:474-80. [PMID: 343309 DOI: 10.1016/0035-9203(77)90137-7] [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: 12/14/2022] Open
Abstract
Adoptive passive transfer of immunity to Plasmodium berghei infection has been investigated in an inbred strain of Swiss mice. The mice were made hyperimmune by repeated passage of 10(3) parasites and subsequent therapy with an antimalarial drug. Immune sera and cells obtained from thymus, spleen and peritoneal exudate were transferred to normal animals which were subsequently challenged with standard doses of P. berghei. It was observed that: (a) immune serum in high doses (0.5 ml/mouse) enhanced parasitaemia; when used in smaller doses (0.1 ml/mouse), it afforded a considerable degree of protection; (b) viable immune lymphocytes obtained from thymus and lymph node afforded protection; (c) the mixed population of cells obtained from spleens of immunized mice, as well as peritoneal exudate, protected mice against challenge inoculum; (d) glutaraldehyde-treated spleen cells and material obtained after freezing and thawing the same number of spleen cells, macrophages and lymph node also afforded protection. These findings confirm that, under these experimental conditions, immunity against P. berghei is mediated through (i) specific antibody which is dose-dependent, (ii) cell-mediated immunity and (iii) effective response to processed antigen.
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272
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Pennington GW, Naik S. Letter: Artificial insemination (donor). BRITISH MEDICAL JOURNAL 1975; 4:225-6. [PMID: 1192004 PMCID: PMC1675039 DOI: 10.1136/bmj.4.5990.225-d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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273
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274
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Kaur S, Minocha YC, Sengupta U, Naik S. A comparative evaluation of bacteriologic and morphologic indices of Mycobacterium leprae in skin, lymph node, bone marrow, nerve and muscle. INTERNATIONAL JOURNAL OF LEPROSY AND OTHER MYCOBACTERIAL DISEASES : OFFICIAL ORGAN OF THE INTERNATIONAL LEPROSY ASSOCIATION 1975; 43:55-7. [PMID: 1099019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This study elicits the comparative evaluation of the Bacteriologic Index (BI) and Morphologic Index (MI) of the skin, lymph node, bone marrow, nerve and muscle tissues of 15 untreated leprosy patients. The findings of comparable or even higher BI's and MI's in lymph nodes than skin are of considerable interest, especially the presence of a significant percentage of viable bacilli during reaction states when MI of skin and nerve tissue was found to be negative. Evaluation of the BI's and MI's of lymph nodes has been suggested to be of utmost importance for follow-up studies of patients being treated with antileprosy drugs.
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275
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Pennington GW, Naik S. An extended study on the use of clomiphene citrate for the induction of ovulation. Ir J Med Sci 1973; 142:141-6. [PMID: 4711571 DOI: 10.1007/bf02950002] [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: 01/12/2023]
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