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Sharma PK, Singh G. Distribution of suspended particulate matter with trace element composition and apportionment of possible sources in the Raniganj coalfield, India. ENVIRONMENTAL MONITORING AND ASSESSMENT 1992; 22:237-244. [PMID: 24226955 DOI: 10.1007/bf00419572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Ambient air monitoring for suspended particulate matter was carried over a period of one year in some coal mining areas of the Raniganj coalfield. Concentrations of seven elements in suspended particulate matter were determined. The set of data obtained was analysed to determine the sources of trace elements by factor analysis. The data could be interpreted on the basis of five factors. These factors are attributed to various sources of particulate matter by noting the dependence of factors on the elements.
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Black SD, Sharma PK, Gallucci JC, Blackburn AC, Downs JW, Rinderle SJ, Witiak DT. Modulation of carcinogenicity in 1,2,3,4-tetrahydro-7,12- dimethylbenz[a]anthracene (THDMBA) by fluorine substitution: crystal structures of the 5- and 6-fluoro regioisomers. Carcinogenesis 1992; 13:1337-43. [PMID: 1499085 DOI: 10.1093/carcin/13.8.1337] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
1,2,3,4-Tetrahydro-7,12-dimethylbenz[a]anthracene (THDMBA) is an animal carcinogen which lacks an aromatic bay-region and shows promise as a model to investigate non-classical mechanisms of carcinogenesis. The fluorine-substituted derivatives at positions 5 and 6 on the B-ring exhibit a striking range of oncogenic potential wherein the 6F-THDMBA is twice as potent as the parent carcinogen, but the 5F-THDMBA is virtually inactive. To study structure-reactivity relationships for these fluorine regioisomers, we have determined the three-dimensional structures of the compounds by single-crystal X-ray diffraction. These crystal structures are the first such to be reported for any monofluoro anthracene (or pyrene) derivative. The partially-reduced A-ring exists in both enantiomeric half-chair conformers in the crystalline state, and the compounds have quasi-planar anthracene ring systems which exhibit a right-handed twist in the 'beta'-conformer, with the expected opposite twist in the other. A complete analysis of bond lengths, bond angles and torsion angles is presented. Preliminary electrostatic potentials have been derived from the X-ray data sets, and the results indicate significant differences in potential between 5F- and 6F-THDMBA at positions near the partially reduced bay region. Such results are likely to be of importance in the understanding of metabolic activation to reactive intermediates capable of bonding covalently to DNA.
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178
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Gibson QH, Bellelli A, Regan R, Sharma PK, Vinogradov SN. Ligand binding by the chlorocruorin from Eudistylia vancouverii. J Biol Chem 1992; 267:11977-81. [PMID: 1601868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Carbon monoxide chlorocruorin from Eudistylia vancouverii shows three distinct first-order relaxations with rates of 2.9 x 10(9) s-1, 6.5 x 10(7) s-1, and 3.2 x 10(6) s-1 (geminate reactions) and three second-order relaxations with rates of 4.7 x 10(6) M-1 s-1, 7 x 10(5) M-1 s-1, and 7 x 10(4) M-1 s-1, when studied by flash photolysis. The amplitudes of the second-order reactions depend on the extent of photolysis. This may be due to relaxation from the liganded (R) to the unliganded (T) conformation following photolysis and suggests that the combination rates contribute to cooperativity. In a stopped-flow experiment only the slowest phase with a rate of 7 x 10(4) M-1 s-1 is observed. It is assigned to binding to the T-state protein. Fragments of the native protein containing 12 and 4 hemes react like the holoprotein suggesting that the tetramer is a major cooperative unit. Oxygen binding shows three geminate relaxations with rates of 2.5 x 10(10) s-1, 3.5 x 10(7) s-1, and 4.5 x 10(6) s-1, and two second-order rates of 1.5 x 10(7) M-1 s-1 and 1 x 10(6) M-1 s-1. The amplitudes of the second-order phases do not correlate with the extent of photolysis. The results with the two ligands are consistent with an allosteric transition fast enough to compete with a rebinding rate of 500 s-1 in the R to T direction (CO rebinding) but not fast enough to compete with oxygen rebinding. There is significant heterogeneity in the R-state kinetics, but the T-state reaction is homogeneous.
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179
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Rinderle SJ, Black SD, Sharma PK, Witiak DT. Comparative metabolism in vitro of a novel carcinogenic polycyclic aromatic hydrocarbon, 1,2,3,4-tetrahydro-7,12-dimethylbenz[a]anthracene, and its two regioisomeric B-ring fluoro analogues. Cancer Res 1992; 52:3035-42. [PMID: 1591719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A novel biotransformation pathway likely exists for carcinogenic 1,2,3,4-tetrahydro-7,12-dimethylbenz[a]anthracene (THDMBA), since this A-ring-reduced polycyclic aromatic hydrocarbon does not have an aromatic bay-region. The comparative metabolism of THDMBA, a non-carcinogenic 5F analogue, and a more carcinogenic 6F-THDMBA species was examined to determine potential DNA-bonding metabolites. Rat liver microsomes from phenobarbital-treated animals were incubated in the presence of THDMBA (or fluoro-THDMBA), NADPH, and O2. Metabolic products and the parent compound were extracted into organic solvent and analyzed/purified using reversed-phase high-performance liquid chromatography. Structure identification of metabolites using proton nuclear magnetic resonance, mass spectroscopy, and ultraviolet/visible spectroscopy indicated that hydroxylations at benzylic C1 and at the C7- and C12-CH3 functions are major oxidation products of THDMBA. Major metabolites for the noncarcinogenic 5F-THDMBA are the C4-hydroxy, C7-hydroxymethyl, and C12-hydroxymethyl derivatives. However, the potent carcinogen 6F-THDMBA only yielded major hydroxylation products at C1 and C12-CH3. These results together with a consideration of the electronic and steric effects of fluorine and the biological activities of these polycyclic aromatic hydrocarbons suggest that hydroxylation at the hindered benzylic C1 position or the C12-CH3 group of THDMBA is important for the biotransformation of such polycyclic aromatic hydrocarbons to DNA-bonding species.
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180
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Haque M, Rashid KA, Stern MS, Sharma PK, Siddiqi AH, Vinogradov SN, Walz DA. Comparison of the hemoglobins of the platyhelminths Gastrothylax crumenifer and Paramphistomum epiclitum (Trematoda: Paramphistomatidae). COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY 1992; 101:673-6. [PMID: 1611885 DOI: 10.1016/0305-0491(92)90357-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
1. Gastrothylax crumenifer and Paramphistomum epiclitum parasitize the water buffalo Bubalus bubalis. 2. Gastrothylas hemoglobin consisted of two fractions of ca 30,000 and ca 18,000 by gel filtration. SDS-electrophoresis showed both to be single, ca 15,000 chains. 3. Paramphistomum hemoglobin was ca 16,000 by both gel filtration and SDS-electrophoresis. 4. Reversed-phase chromatography of carboxymethylated trematode and buffalo globins gave single peaks and two peaks, respectively. Although Paramphistomum hemoglobin provided and N-terminal sequence, Gastrothylax hemoglobin did not, suggesting blocked N-terminals. The buffalo sequences were found to be identical to the sequences of the alpha and beta chains of bovine hemoglobin. 5. Although Paramphistomum hemoglobin consists of only one chain, Gastrothylax hemoglobin consists either of one chain which aggregates to a dimer or of two different chains, only one of which aggregates to a dimer.
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Nair RV, Walker SE, Sharma PK, Witiak DT, DiGiovanni J. Mouse skin tumor initiating activity of fluorinated derivatives of 1,2,3,4-tetrahydro-7,12-dimethylbenz[a]anthracene. Chem Res Toxicol 1992; 5:153-6. [PMID: 1643244 DOI: 10.1021/tx00026a002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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182
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Livingston DH, Sharma PK, Glantz AI. Tissue expanders for abdominal wall reconstruction following severe trauma: technical note and case reports. THE JOURNAL OF TRAUMA 1992; 32:82-6. [PMID: 1531077 DOI: 10.1097/00005373-199201000-00017] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A technique of abdominal wall reconstruction without the use of prosthetic materials or myocutaneous flaps following severe abdominal trauma is described. Six weeks before abdominal reconstruction, tissue expanders are inserted on either side of the ventral defect and inflated at weekly intervals to increase the amount of local tissue for coverage. Restoration of the abdominal wall is accomplished by denuding the skin graft covering the ventral defect of its dermal elements and suturing this newly created fascial graft to the existing rectus fascia. The fascial graft is covered with full-thickness skin using local advancement flaps. This procedure has been carried out on two patients in conjunction with closure of a colostomy in one and closure of an enterocutaneous fistula in another. Both patients healed without infection, and follow-up at 3 and 12 months postoperatively demonstrated no evidence of hernia formation.
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183
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Mulvey MA, Sharma PK. Traumatic amputation. RN 1991; 54:26-30. [PMID: 1887205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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184
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Sharma PK, Kharbanda OP. Role of programmed cell death in dental anomalies associated with cleft lip and palate. Med Hypotheses 1991; 36:98-100. [PMID: 1766422 DOI: 10.1016/0306-9877(91)90171-t] [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: 12/28/2022]
Abstract
A role of programmed cell death (PCD) is proposed in the production of tooth anomalies occurring in association with cleft lip and palate (Cl + P). Dental anomalies are viewed as a microform of cleft lip and palate, produced by different modulations of the same operating mechanism.
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185
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Vinogradov SN, Sharma PK, Qabar AN, Wall JS, Westrick JA, Simmons JH, Gill SJ. A dodecamer of globin chains is the principal functional subunit of the extracellular hemoglobin of Lumbricus terrestris. J Biol Chem 1991; 266:13091-6. [PMID: 2071593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Repeated dissociation of the approximately 3600-kDa hexagonal bilayer extracellular hemoglobin of Lumbricus terrestris in 4 M urea followed by gel filtration at neutral pH produces a subunit that retains the oxygen affinity of the native molecule (approximately 12 torr), but only two-thirds of the cooperativity (nmax = 2.1 +/- 0.2 versus 3.3 +/- 0.3). The mass of this subunit was estimated to be 202 +/- 15 kDa by gel filtration and 202 +/- 26 kDa from mass measurements of unstained freeze-dried specimens by scanning transmission electron microscopy. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of this subunit showed that it consists predominantly of the heme-containing subunits M (chain I, 17 kDa) and T (disulfide-bonded chains II-IV, 50 kDa). Mixing of subunits M and T isolated concurrently with the 200-kDa subunit resulted in partial association into particles that had a mass of 191 +/- 13 kDa determined by gel filtration and 200 +/- 38 kDa determined by scanning transmission electron microscopy and whose oxygen affinity and cooperativity were the same as those of the 200-kDa subunit. The results imply that the 200-kDa subunit is a dodecamer of globin chains, consisting of three copies each of subunits M and T (3 x chains (I + II + III + IV], in good agreement with the mass of 209 kDa calculated from the amino acid sequences of the four chains, and represents the largest functional subunit of Lumbricus hemoglobin. Twelve copies of this subunit would account for two-thirds of the total mass of the molecule, as suggested earlier (Vinogradov, S. N., Lugo, S. L., Mainwaring, M. G., Kapp, O. H., and Crewe, A. V. (1986) Proc. Natl. Acad. Sci. U. S. A. 83, 8034-8038). The retention of only partial cooperativity by the 200-kDa subunit implies that full cooperativity is dependent on the presence of a complete hexagonal bilayer structure, wherein 12 200-kDa subunits are linked together by approximately 30-kDa heme-deficient chains.
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186
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Gibson QH, Blackmore RS, Regan R, Sharma PK, Vinogradov SN. Ligand binding in a hierarchy of globin complexes. The hexagonal bilayer hemoglobin of Lumbricus terrestris and its heme-containing subunits. J Biol Chem 1991; 266:13097-102. [PMID: 2071594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The kinetics of CO and NO recombination with the giant approximately 3600-kDa hexagonal bilayer hemoglobin of Lumbricus terrestris and its subunits, the approximately 200-kDa dodecamer of globin chains (3 x chains (I + II + III + IV] (see preceding paper (Vinogradov S.N., Sharma, P.K., Qabor, A.N., Wall, J.S., Westrick, J.A., Simmons, J.H., and Gill, S.J. (1991) J. Biol. Chem. 266, 13091-13096], the 50-kDa disulfide-bonded trimer (chains II-IV), the monomer (chain I), and the approximately 30-kDa linker (chains VA, VB, and VI), were measured following photolysis over time scales ranging from picosecond to millisecond. CO recombination at 436 nm subsequent to excitation (9 ns) at 532 nm showed three phases covering a 100-fold range for the Hb, dodecamer, trimer, and linker protein. The proportion of the fast phase was 0.1-0.2 for the trimer, dodecamer, and Hb. The relative rates and amplitudes of the phases were not affected by changes in CO concentration or excitation intensity. The monomer showed a single phase with a rate of 2 x 10(6) M-1 s-1. The second-order reaction with NO showed two rates. The faster rate was 90 x 10(6) M-1 s-1 and accounted for approximately 0.7 of the reaction for all species except the monomer, where it accounted for the full reaction. The slower rate was 15 x 10(6) M-1 s-1 for all species except the monomer.
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187
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Sharma PK, Janniger CK, Schwartz RA, Rauscher GE, Lambert WC. The treatment of atypical lipoma with liposuction. THE JOURNAL OF DERMATOLOGIC SURGERY AND ONCOLOGY 1991; 17:332-4. [PMID: 2040745 DOI: 10.1111/j.1524-4725.1991.tb01706.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Large lipomas may best be treated with liposuction. Once a lipoma enlarges to 4 cm or more, liposuction has several advantages over conventional surgery. A well-demarcated lipoma 15 cm in diameter and deep to muscle was treated by liposuction. Biopsy showed an atypical lipoma. Because the entire tumor was removed by liposuction, we feel that the prognosis is excellent. The cosmesis and morbidity results were far superior to those anticipated with conventional excisional surgery. Small superficial lipomas may be treated by suction lipectomy and the surrounding area can be contoured symmetrically at the same time, whereas large ones can be liposuctioned completely without extensive surgical extirpation and morbidity. Because such big lesions may represent atypical lipomas or liposarcomas, care must be taken to remove the entire tumor.
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188
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Sharma PK, Schwartz RA, Janniger CK, Arbesfeld DM, Kapila R, Decter JA, Lambert WC. Sweet's syndrome with acute leukemia. Cutis 1991; 47:249-52. [PMID: 2070645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Sweet's syndrome presenting with malignancy or acute neutrophilic dermatosis is an unusual cutaneous disorder associated most commonly with acute myelogenous leukemia. Although other cancers may be linked to acute neutrophilic dermatosis, a large majority of patients have associated neoplasms of hematopoietic, plasma cell, or lymphoid nature. We report a patient with aplastic anemia who showed acute neutrophilic dermatosis and, ultimately, acute leukemia. The individual lesions responded to carbon dioxide laser surgery.
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189
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Sharma PK, Walz DA, Vinogradov SN. Heterogeneity of the subunits of Lumbricus terrestris extracellular hemoglobin dissociated at alkaline pH. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY 1991; 98:47-51. [PMID: 2060281 DOI: 10.1016/0305-0491(91)90306-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
1. The gel filtration profiles of dissociated extracellular hemoglobin of Lumbricus terrestris obtained in 0.1 M borate buffers at pH greater than 9, using columns of Sephadex G100, Sephacryl S200 and Ultragel AcA 44, consist of at least two peaks A and B. 2. SDS-PAGE of several fractions across the complete elution profile demonstrates that only the fractions under the right hand portion of peak B are homogenous and consist of the monomer (M) subunit (Mr = 17,000). 3. The fractions under the first peak contain the remaining subunits, a disulfide-bonded trimer (T) subunit (Mr = 50,000) and of two subunits (D1 and D2) of ca 30,000. 4. Densitometry of the SDS-PAGE patterns suggests that the proportions of these subunits vary across the two peaks, implying that peak A does not consist of a complex of fixed stoichiometry of the T and D1 and D2 subunits. 5. Furthermore, the D1 and D2 subunits overlap the M subunit in the trough between peaks A and B and are present in the left hand portion of peak B, probably because of the self-association of the M subunit. 6. In addition, SDS-PAGE experiments with a single fraction of peak A, where the load and the duration of staining were varied, suggests that the relative proportions of the subunits are independent of these two variables.
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190
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Sharma PK, Babel AL, Yadav SS. Tuberculosis of breast (study of 7 cases). J Postgrad Med 1991; 37:24-6, 26A. [PMID: 1941687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Seven cases of tuberculosis of breast are presented. The clinical features were multiple discharging sinuses, lump, ulcer and recurring abscess of breast. Diagnosis relied on histological appearance. Acid fast bacilli being present in only one specimen and positive culture obtained in one patient. Successful treatment combines antituberculous drug therapy with removal of infected breast tissue.
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191
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Vinogradov SN, Sharma PK, Walz DA. Iron and heme contents of the extracellular hemoglobins and chlorocruorins of annelids. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY 1991; 98:187-94. [PMID: 1873979 DOI: 10.1016/0305-0491(91)90165-a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
1. A survey of the literature on the extracellular hemoglobins and chlorocruorins of over 30 species of annelids, covering the last 30 years, shows that the range of iron content is 0.211-0.265 wt.% (mean = 0.228 +/- 0.013, N = 28) and the range of the heme content is 1.83-3.64 wt.% (mean = 2.60 +/- 0.38, N = 29). 2. There is relatively little scatter in the values of the experimental iron contents and only one of the 28 values is clearly outside the standard deviation range. 3. The values of heme contents are much more scattered, with seven values, clearly outside the standard deviation limits. 4. The aberrant cases are discussed and it is noted that the mean heme content of 2.60 wt.% corresponds to an iron content of 0.236 wt.% in excellent agreement with the mean iron content of 0.228 wt.%. 5. This result suggests strongly that experimental values of iron and heme contents outside the ranges of 0.211-0.243 and 2.3-2.7 wt.%, respectively, corresponding to a minimum molecular mass outside the range 23,000-26,000, should be regarded with caution.
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192
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Stern MS, Vinogradov SN, Sharma PK, Ereifej K, Walz DA. Amino acid sequence of the monomer subunit of the giant extracellular hemoglobin of the aquatic oligochaete, Tubifex tubifex. EUROPEAN JOURNAL OF BIOCHEMISTRY 1990; 194:67-73. [PMID: 2253625 DOI: 10.1111/j.1432-1033.1990.tb19428.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The extracellular hemoglobin of the aquatic oligochaete Tubifex tubifex consists of four subunits: a monomer of 16.5 kDa, a disulfide-bonded trimer of about 50 kDa and at least two subunits of about 30 kDa. The complete amino acid sequence of the monomeric subunit was determined: it consists of 141 amino acid residues and has a molecular mass of 16,286 Da including a heme group. 39 residues (28%) were found to be identical with those in the corresponding positions in the monomeric globin chains from Lumbricus terrestris, Pheretima sieboldi, and Tylorrhynchus heterochaetus. Tubifex and Lumbricus are most similar, with 75 amino acid identities (53%). There are eight invariant residues amongst these monomeric globins and the intracellular monomeric globin of Glycera and the human beta-globin. The monomeric globin from Tubifex aligns best with those of group A, globins which have a Cys in their second position and an invariant Lys-Val-Lys at positions 9-11 [Gotoh et al. (1987) Biochem. J. 241, 441-445]. The two cysteine residues, at positions 2 and 131, appear to be disulfide-bonded.
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193
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Sharma P, Pramod J, Sharma PK, Sapra M, Manorma, Kothari LK. Effect of vitamin C deficiency and excess on the liver: a histopathological and biochemical study in guinea pigs fed normal or high cholesterol diet. INDIAN J PATHOL MICR 1990; 33:307-13. [PMID: 2132497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
When guinea pigs were kept on a restricted vitamin C intake of only 0.5 mg daily, their serum ascorbic acid fell to 0.16 +/- 0.06 mg/d1 in 16 weeks as compared to 0.73 +/- 0.11 in control. This was associated with significant increase in liver cholesterol and triglycerides. When they were simultaneously challenged with a high cholesterol load, this fat accumulation was markedly exaggerated. The weight of the liver now increased by almost two-and-half times. Liver cholesterol rose to 12.90 +/- 2.63 mg/gm as compared to 3.23 +/- 0.56 mg/gm with low vitamin C alone. Histopathology showed marked distension and vacuolation of hepatocytes, focal necrosis and fibroplasia. Administration of excess vitamin C (100 mg daily) significantly countered these changes. The vitamin C-lipid relationship has important clinical bearings and liver could be an important site of vitamin C action.
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194
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Gerst PH, Sharma SK, Sharma PK. Selective management of penetrating neck trauma. Am Surg 1990; 56:553-5. [PMID: 2393198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Of 110 patients with penetrating injuries of the neck, 58 were selectively observed and 52 underwent prompt surgical exploration according to defined criteria. In the group initially selected for observation, none required subsequent surgical intervention, and there was no mortality. Among those patients operated upon primarily, the negative exploration rate was 17 percent, and two patients died, both as a result of their injuries (mortality rate, 4%). We conclude that selective management of patients with penetrating neck injuries, when guided by repeated and careful examinations, is appropriate, does not increase the risk to patients, and avoids unnecessary surgical procedures.
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195
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Wiltz H, Kollmer WL, Rauscher GE, Sharma PK, Cohen PJ, Schwartz RA. Excision of the large congenital melanocytic nevus facilitated by the use of the tissue expander. J Surg Oncol 1988; 38:104-7. [PMID: 3379964 DOI: 10.1002/jso.2930380210] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Large congenital melanocytic nevi both present a cosmetic problem and may predispose to the development of a melanoma. We present a series of three patients in whom the tissue expander was employed to facilitate a large excision with primary closure and excellent cosmesis.
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196
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Natarajan D, Rai VN, Jain A, Roy T, Sharma PK, Nigam PD. Intracoronary versus intravenous streptokinase in acute myocardial infarction. Int J Cardiol 1988; 19:181-9. [PMID: 3286535 DOI: 10.1016/0167-5273(88)90078-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
To assess the relative efficacy of coronary thrombolysis using intracoronary versus intravenous streptokinase, 32 patients with acute myocardial infarction were randomly assigned to receive intracoronary (n = 17) and intravenous streptokinase (n = 15). All patients underwent selective coronary arteriography before and after administration of streptokinase by either route within 4 hours of the onset of symptoms. Intravenous streptokinase was given as 750,000 units over 30 minutes, while a mean dose of 180,000 units was required for thrombolysis in the group having intracoronary delivery. Recanalization occurred in 71.4% (10 of 14) of patients receiving streptokinase, by the intracoronary group in contrast to only 25% of patients (3 of 12) who received the drug intravenously (P less than 0.05). Spontaneous thrombolysis was seen in 17.6% and 20% of the patients in the groups having intracoronary and intravenous delivery, respectively. Bleeding complications were few in both groups. Thus, when baseline coronary arteriography is performed, recanalization with intracoronary streptokinase is more effective in the treatment of acute myocardial infarction than intravenous streptokinase.
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197
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Sharma P, Pramod J, Sharma PK, Chaturvedi SK, Kothari LK. Effect of vitamin C administration on serum & aortic lipid profile of guineapigs. Indian J Med Res 1988; 87:283-9. [PMID: 3397163] [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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198
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Handa F, Sharma PK, Guha A, Sharma SD. Alcometasone dipropionate 0.05% ointment versus hydrocortisone 1.0% ointment in eczema & other dermatoses. Indian J Dermatol 1988; 33:5-8. [PMID: 3074045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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199
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Sharma PK, Gupta GS. Effect of--SH compounds and catecholamines on radiosusceptibility of testicular hyaluronidase. INDIAN JOURNAL OF BIOCHEMISTRY & BIOPHYSICS 1987; 24:218-24. [PMID: 3436631] [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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200
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Sharma PK, Saxena AK, Jain RK, Sharma AK. Matting of the Hair Due to Onic Detergent. Indian J Dermatol Venereol Leprol 1987; 53:179-180. [PMID: 28145334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A 27 year old developed matting of her hair after using 5% cetrimide lotion for dandruff.
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