401
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Pal S. Linearized bivariational coupled-cluster approach: General scheme for derivation of static properties. PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 39:2712-2714. [PMID: 9901545 DOI: 10.1103/physreva.39.2712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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402
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Choi HU, Johnson TL, Pal S, Tang LH, Rosenberg L, Neame PJ. Characterization of the dermatan sulfate proteoglycans, DS-PGI and DS-PGII, from bovine articular cartilage and skin isolated by octyl-sepharose chromatography. J Biol Chem 1989; 264:2876-84. [PMID: 2914936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Two forms of dermatan sulfate proteoglycans, called DS-PGI and DS-PGII, have been isolated from both bovine fetal skin and calf articular cartilage and characterized. The proteoglycans were isolated using either (a) molecular sieve chromatography under conditions where DS-PGI selectively self-associates or (b) chromatography on octyl-Sepharose, which separates DS-PGI from DS-PGII based on differences in the hydrophobic properties of their core proteins. The NH2-terminal amino acid sequence of DS-PGI from skin and cartilage is identical. The NH2-terminal amino acid sequence of DS-PGII from skin and cartilage is identical. However, the amino acid sequence data and tryptic peptide maps demonstrate that the core proteins of DS-PGI and DS-PGII differ in primary structure. In DS-PGI from bovine fetal skin, 81-84% of the glycosaminoglycan was composed of IdoA-GalNAc(SO4) disaccharide repeating units. In DS-PGI from calf articular cartilage, only 25-29% of the glycosaminoglycan was composed of IdoA-GalNAc(SO4). In DS-PGII from bovine fetal skin, 85-93% of the glycosaminoglycan was IdoA-GalNAc(SO4), whereas in DS-PGII from calf articular cartilage, only 40-44% of the glycosaminoglycan was IdoA-GalNAc(SO4). Thus, analogous proteoglycans from two different tissues, such as DS-PGI from skin and cartilage, possess a core protein with the same primary structure, yet contain glycosaminoglycan chains which differ greatly in iduronic acid content. These differences in the composition of the glycosaminoglycan chains must be determined by tissue-specific mechanisms which regulate the degree of epimerization of GlcA-GalNAc(SO4) into IdoA-GalNAc(SO4) and not by the primary structure of the core protein.
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403
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Choi HU, Johnson TL, Pal S, Tang LH, Rosenberg L, Neame PJ. Characterization of the dermatan sulfate proteoglycans, DS-PGI and DS-PGII, from bovine articular cartilage and skin isolated by octyl-sepharose chromatography. J Biol Chem 1989. [DOI: 10.1016/s0021-9258(19)81694-0] [Citation(s) in RCA: 122] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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404
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Pal S. Multireference coupled-cluster response approach for the calculation of static properties. PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 39:39-42. [PMID: 9900984 DOI: 10.1103/physreva.39.39] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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405
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Rosenberg L, Tang LH, Pal S, Johnson TL, Choi HU. Proteoglycans of bovine articular cartilage. Studies of the direct interaction of link protein with hyaluronate in the absence of proteoglycan monomer. J Biol Chem 1988; 263:18071-7. [PMID: 3192526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
When link protein binds to hyaluronate in the absence of proteoglycan monomer a high molecular weight complex is formed. Two assay procedures have been developed to examine the formation of the complex and the rate and stoichiometry of binding of link protein to hyaluronate in the complex. In the first, the complex is isolated by differential centrifugation, and the stoichiometry of binding of link protein to hyaluronate in the sedimented complex is determined. In the second assay, which involves turbidimetry, the rate of complex formation (delta A420/min) is determined, and the amount of complex formed is determined in terms of the maximum turbidity (A420,max) attained. The effects of temperature, pH, initial total solute concentration, and the ratio by weight of link protein to hyaluronate on the amount of complex formed and on the rate of complex formation were examined. There is a linear correlation between the amount of complex formed as determined by turbidity and by differential centrifugation. Using these assays, we examined the specificity of the binding of link protein to hyaluronate and the capacity of hyaluronate oligosaccharides to competitively inhibit the binding of link protein to hyaluronate. Hyaluronate decasaccharide is the oligosaccharide of minimum size that strongly inhibits the binding of link protein to hyaluronate. Proteoglycan monomers dissociate from hyaluronate as the pH is decreased from pH 7 to pH 5. Turbidimetric studies show that the rate of binding of link protein to hyaluronate increases with decreasing pH. The binding affinity of proteoglycan monomers for hyaluronate is decreased at pH 5, whereas the binding affinity of link protein for hyaluronate is not. This difference in the effect of pH on the stability of binding of link protein to hyaluronate, compared with proteoglycan monomer, explains in part the capacity of link protein to stabilize the binding of proteoglycan monomer to hyaluronate at pH 5.
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406
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Rosenberg L, Tang LH, Pal S, Johnson TL, Choi HU. Proteoglycans of bovine articular cartilage. Studies of the direct interaction of link protein with hyaluronate in the absence of proteoglycan monomer. J Biol Chem 1988. [DOI: 10.1016/s0021-9258(19)81324-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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407
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Sengupta PG, Mondal S, Gupta DN, Sarkar S, Saha NC, Ghosh S, Pal S, Deb BC, Pal SC. Childhood diarrhoea associated with cryptosporidium species in a rural community near Calcutta. Indian J Public Health 1988; 32:205-6. [PMID: 3271770] [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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408
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Frisolone J, Sylvia LM, Gelwan J, Pal S, Pellechia C. False-positive serum digoxin concentrations determined by three digoxin assays in patients with liver disease. CLINICAL PHARMACY 1988; 7:444-9. [PMID: 3402179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The incidence and magnitude of false-positive serum digoxin concentrations (SDCs) determined by three digoxin assays in patients with liver disease were studied. Patients with biochemical evidence of liver disease were enrolled in the study if they had never received a cardiac glycoside, were not pregnant, were not receiving spironolactone, did not have moderate to severe renal impairment, and did not have transient elevations in liver function test results. Blood specimens from each patient were assayed for apparent SDCs in triplicate using a fluorescence polarization immunoassay (FPIA, TDx Digoxin II, Abbott) and a digoxin radioimmunoassay (RIA, GammaCoat I125, Clinical Assays) and in duplicate using a fluorometric enzyme immunoassay (Dade Stratus, American Dade). Forty-two patients met the study criteria. The percentage of patients exhibiting detectable apparent SDCs (greater than or equal to 0.2 ng/mL) was 57% with RIA, 55% with FPIA, and 28% with the fluorometric enzyme immunoassay. Apparent SDCs ranged from 0.2 to 0.6 ng/mL (RIA), 0.2 to 1.56 ng/mL (FPIA), and 0.2 to 0.38 ng/mL (fluorometric enzyme immunoassay). Values obtained using the fluorometric enzyme immunoassay were significantly different from the apparent SDCs determined using RIA and FPIA; however, no significant difference was found between the values obtained using RIA and FPIA. Significant correlations were found between the apparent SDCs determined using RIA and serum bilirubin values and between the apparent SDCs determined using the fluorometric enzyme immunoassay and alkaline phosphatase values. Of the three assay methods tested, the fluorometric enzyme immunoassay showed the least cross-sensitivity to digoxin-like immunoreactive substance (DLIS).(ABSTRACT TRUNCATED AT 250 WORDS)
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409
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Clinton WL, Pal S, Jutila RE. Ion energy distributions from photon- and electron-stimulated desorption. II. The quasiclassical final state and reneutralization. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 36:4123-4134. [PMID: 9943390 DOI: 10.1103/physrevb.36.4123] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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410
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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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411
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Basu-Ghose K, Pal S. Bivariational coupled-cluster method: Equations for first-order property. PHYSICAL REVIEW. A, GENERAL PHYSICS 1987; 36:1539-1543. [PMID: 9899034 DOI: 10.1103/physreva.36.1539] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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412
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Pal S, Vidyasagar PB, Khole V, Damle PS, Khole V. Effects of Vipera lebetina (Turanica C.) venom on electrocardiogram of Swiss albino mice by heart rate variability technique. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 1987; 25:262-4. [PMID: 3653936] [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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413
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Clinton WL, Pal S. Influence of surface corrugations on electron-stimulated desorption: Angular distributions of ions and neutral atoms from Ni(110)-CO. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 35:2991-2994. [PMID: 9941784 DOI: 10.1103/physrevb.35.2991] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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414
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Pal S, Moulik SP. Cholesterol solubility in n-alkanols and characteristic behaviour of n-decanol. INDIAN JOURNAL OF BIOCHEMISTRY & BIOPHYSICS 1987; 24:24-8. [PMID: 3623593] [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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415
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Pal S, Bhadra N, Majumdar S, Dutta S. Bone cutting force & tool wear using a tool of implantable material. J Biomech 1987. [DOI: 10.1016/0021-9290(87)90236-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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416
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Das P, Pal S, Dutta D, Bhattacharya MK, Pal SC. Cryptosporidiosis in Bengali children with acute diarrhoea. Trans R Soc Trop Med Hyg 1987; 81:241. [PMID: 3617185 DOI: 10.1016/0035-9203(87)90227-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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417
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Chaudhuri G, Ghoshal K, Pal S, Sen S, Banerjee AB. A new medium for large scale production of Leishmania donovani promastigotes for biochemical studies. Indian J Med Res 1986; 84:457-60. [PMID: 3557564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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418
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Ghoshal K, Sen S, Pal S, Banerjee AB. Nutrition of Leishmania donovani donovani: growth in new semidefined & completely chemically defined media. Indian J Med Res 1986; 84:461-8. [PMID: 3557565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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419
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Pal S. Bivariational coupled-cluster approach for the study of static electronic properties. PHYSICAL REVIEW. A, GENERAL PHYSICS 1986; 34:2682-2686. [PMID: 9897582 DOI: 10.1103/physreva.34.2682] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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420
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Saha S, Pal S. Mechanical characterization of commercially made carbon-fiber-reinforced polymethylmethacrylate. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 1986; 20:817-26. [PMID: 3722216 DOI: 10.1002/jbm.820200612] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Acrylic bone cement is significantly weaker and of lower modulus of elasticity than compact bone. It is also weaker in tension than in compression. This limits its use in orthopedics to areas where tensile stresses were minimum. Many authors have shown that addition of small percentages of fiber reinforcement by hand mixing improved the mechanical properties significantly but with variable results. In this investigation we have examined the mechanical properties of machine-mixed, commercially available carbon-fiber-reinforced bone cement. Appropriate samples of normal low-viscosity cement and carbon-fiber-reinforced cement were prepared and tested mechanically. Carbon fiber increased the tensile strength and modulus by 30% and 35.8% respectively. The compression strength and modulus, however, increased by only 10.7%. Similarly, bending and shear strengths improved by 29.5% and 18.5%, respectively. Diametral compression strength, which is an indirect measure of tensile strength, however, showed only 6.2% improvement. The maximum temperature rise during polymerization was also reduced significantly by the fiber reinforcement.
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421
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Pal S. Analysis of coupled-cluster methods for first-order static properties. PHYSICAL REVIEW. A, GENERAL PHYSICS 1986; 33:2240-2244. [PMID: 9896898 DOI: 10.1103/physreva.33.2240] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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422
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Pal S, Pal DS. Galerkin's finite element-Laplace transform technique to transient heat migration in human skin and subcutaneous tissues. Bull Math Biol 1986; 48:125-36. [PMID: 3719151 DOI: 10.1007/bf02460018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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423
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Clinton WL, Pal S. Quantum effects in the trajectories of sputtered ions. PHYSICAL REVIEW. B, CONDENSED MATTER 1986; 33:2817-2819. [PMID: 9938626 DOI: 10.1103/physrevb.33.2817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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424
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Pal S, Girdhar BK. A study of knowledge of disease among leprosy patients and attitude of community towards them. INDIAN JOURNAL OF LEPROSY 1985; 57:620-3. [PMID: 3831102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A study has been undertaken to evaluate knowledge about disease among leprosy patients and attitude of family and neighbours towards patients. 310 O.P.D. patients attending this hospital have been interviewed and their answers have been analysed. It is observed that less than a fourth of the patients knew the causes of the disease while 40% feared that their children were more prone to get leprosy. Interestingly 75% of patients did not encounter any adverse reaction from the other family members, or neighbours even though most of them knew about the disease.
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425
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Rosenberg LC, Choi HU, Tang LH, Johnson TL, Pal S, Webber C, Reiner A, Poole AR. Isolation of dermatan sulfate proteoglycans from mature bovine articular cartilages. J Biol Chem 1985; 260:6304-13. [PMID: 3997823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Two species of dermatan sulfate proteoglycans, called DS-PGI and DS-PGII, have been isolated from mature bovine articular cartilages. On sodium dodecyl sulfate-polyacrylamide gel electrophoresis at low ionic strength in 0.01 M phosphate the dermatan sulfate proteoglycans appeared as a single polydisperse species whose molecular weight ranged from 80,000 to 140,000. The dermatan sulfate proteoglycans eluted as a single peak on Sepharose CL-4B chromatography in 4 M guanidine hydrochloride and showed no tendency to separate into two components. Following chondroitinase AC and ABC digestion, a core protein was obtained whose molecular weight was 45,000. However, what appeared to be a single dermatan sulfate proteoglycan was consistently separated into two species of distinctly different mobilities by sodium dodecyl sulfate-polyacrylamide gel electrophoresis at high ionic strength in 0.375 M Tris. The molecular weight of the smaller species (DS-PGII) ranged from 87,000 to 120,000. The molecular weight of the larger species (DS-PGI) ranged from 165,000 to 285,000. DS-PGI self-associates in 0.375 M Tris, while DS-PGII does not. This phenomenon was exploited to separate DS-PGI and DS-PGII by preparative electrophoresis on 5 to 20% gradient slab gels. The immunological identities of the individual species, DS-PGI and DS-PGII, were examined by enzyme-linked immunosorbent assay using polyclonal antiserum to cartilage-specific proteoglycan monomer from bovine articular cartilage and polyclonal and monoclonal antibodies to DS-PGII. The polyclonal antiserum to cartilage-specific proteoglycan monomer did not react with DS-PGI or DS-PGII, indicating that DS-PGI and DS-PGII possess different core proteins from cartilage-specific proteoglycan monomer. Polyclonal and monoclonal antibodies raised against the mixture of DS-PGI and DS-PGII reacted strongly with DS-PGII, but weakly or not at all with DS-PGI. These results suggest that DS-PGI and DS-PGII possess different core proteins and may represent two different species of dermatan sulfate proteoglycans.
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