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Reeves WH, Ali SA. Preferential use of lambda L chain in lamin B autoantibodies. THE JOURNAL OF IMMUNOLOGY 1989. [DOI: 10.4049/jimmunol.143.11.3614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
The generation of lamin B autoantibodies was examined in a patient with SLE. Lamin B autoantibodies in this individual's serum were almost entirely IgG1 lambda at the onset of the autoimmune response. There was no evidence of IgM to IgG class switching, and no apparent diversification of the autoantibody response over the next 2 yr. The kappa/lambda L chain ratio of the lamin B autoantibodies was 0.13 by ELISA, with a kappa/lambda ratio of 0.70 for the patient's total IgG. In contrast, anti-histone autoantibodies in the patient's serum contained primarily kappa L chain. The kappa/lambda L chain ratios of lamin B autoantibodies from sera of four other patients with SLE were also consistent with restricted heterogeneity of lamin autoantibodies. In two, lambda L chain predominated, and in two others, the lamin B autoantibodies contained predominantly kappa L chains. The restricted heterogeneity of lamin B autoantibodies could be related to targeting of a single immunodominant autoepitope, to the existence of a particular L chain gene or genes that preferentially undergo somatic mutation, leading to the production of lamin B reactive clones, or to a combination of both mechanisms.
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Reeves WH, Ali SA. Preferential use of lambda L chain in lamin B autoantibodies. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 1989; 143:3614-8. [PMID: 2511246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The generation of lamin B autoantibodies was examined in a patient with SLE. Lamin B autoantibodies in this individual's serum were almost entirely IgG1 lambda at the onset of the autoimmune response. There was no evidence of IgM to IgG class switching, and no apparent diversification of the autoantibody response over the next 2 yr. The kappa/lambda L chain ratio of the lamin B autoantibodies was 0.13 by ELISA, with a kappa/lambda ratio of 0.70 for the patient's total IgG. In contrast, anti-histone autoantibodies in the patient's serum contained primarily kappa L chain. The kappa/lambda L chain ratios of lamin B autoantibodies from sera of four other patients with SLE were also consistent with restricted heterogeneity of lamin autoantibodies. In two, lambda L chain predominated, and in two others, the lamin B autoantibodies contained predominantly kappa L chains. The restricted heterogeneity of lamin B autoantibodies could be related to targeting of a single immunodominant autoepitope, to the existence of a particular L chain gene or genes that preferentially undergo somatic mutation, leading to the production of lamin B reactive clones, or to a combination of both mechanisms.
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128
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Wernery U, Ali SA. Bacterial infertility in camels (Camelus dromedarius): isolation of Campylobacter fetus. DTW. DEUTSCHE TIERARZTLICHE WOCHENSCHRIFT 1989; 96:497-8. [PMID: 2598805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This study constitutes the first reported isolation of C. fetus subsp. venerealis from cervical swabs in breeding camels. 9 of 30 camels which were barren for a long period were found to be positive for C. fetus. The methods of isolation are described. Additionally, cervical flora of 30 camels were examined. 9 different bacterial species were isolated of which Staphylococcus aureus was most frequently found. All samples were negative for Trichomonas sp. and Streptococcus zooepidemicus.
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Nagrani S, Power DM, Washington RJ, Pathan MI, Ali SA. Peptidic uraemic toxins. PAKISTAN JOURNAL OF PHARMACEUTICAL SCIENCES 1988; 1:103-11. [PMID: 16414624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A systematic investigation concerning uraemic toxicology has been made using modern analytical methods. The interest is especially focused on substances which are present in uraemic subjects in high concentrations, the so called "uraemic toxins". The samples from biological fluids have been screened with special regards to the presence of peptides and low molecular proteins. These peptidic uraemic toxins are thought to be responsible for certain physiological disturbances when present in uraemic subjects.
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Ali SA, Sergakova LM, Mareev VI, Kazeĭ DV. [Non-invasive evaluation of cardiac output by Doppler echocardiography]. KARDIOLOGIIA 1988; 28:80-4. [PMID: 3392876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In order to evaluate Doppler echocardiography (DEC) used for cardiac output (CO) measurement, 22 patients (7 with coronary heart disease, 6 with dilatation cardiomyopathy, 5 with primary pulmonary hypertension and 4 with rheumatic heart disease) were studied. In all patients, invasive CO determination was performed by right heart catheterization, using thermodilution (T). In DEC, CO was calculated as CO = IV.S.HR, where IV was integral velocity, estimated on the basis of flow areas under planimetric curves, S was aortic root cross-section area, and HR was heart rate. A close correlation was demonstrated between DEC and T results (r-0.74). Only in one case with severe aortic atherosclerosis was there a significant difference between the data. This case excluded, the correlation becomes even closer (r-0.86). It is concluded that: 1) DEC is a valuable and precise method of CO assessment, 2) DEC may be used to monitor treatment efficacy, and 3) its limitation is aortic lesions.
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Ali SA, Eary JF, Warren SD, Badger CC, Krohn KA. Synthesis and radioiodination of tyramine cellobiose for labeling monoclonal antibodies. INTERNATIONAL JOURNAL OF RADIATION APPLICATIONS AND INSTRUMENTATION. PART B, NUCLEAR MEDICINE AND BIOLOGY 1988; 15:557-61. [PMID: 3254878 DOI: 10.1016/s0969-8051(88)80015-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A tyramine cellobiose (TCB) adduct was synthesized by the reductive amination of cellobiose by tyramine with a product yield of 78%. The TCB adduct was purified by chromatography and then iodinated using the chloramine-T method. After iodination, the adduct was activated with cyanuric chloride and linked to protein by incubation at room temperature for 2 h. Immunoreactivity and avidity were well maintained compared to electrophilically radioiodinated 1A14 whole antibody. The tumor uptake and retention were strikingly greater with iodinated TCB-antibody compared to that of the conventionally iodinated antibody; whereas, the plasma clearance curve and uptake in other organs were not changed. This method of labeling increases the retention time of radioiodine in tumors and thus extends to iodinated antibodies one of the advantages of indium labels, namely that the isotope is not readily washed out of the tumor after it becomes localized.
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Ali SA, Schoonen WG, Lambert JG, Van den Hurk R, Van Oordt PG. The skin of the male African catfish, Clarias gariepinus: a source of steroid glucuronides. Gen Comp Endocrinol 1987; 66:415-24. [PMID: 2956154 DOI: 10.1016/0016-6480(87)90252-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Steroid metabolism in the skin of mature male African catfish, Clarias gariepinus, reared in the laboratory, was studied in vitro by tissue incubations with [3H]pregnenolone, [3H]dehydroepiandrosterone, [3H]17 alpha-hydroxyprogesterone, [3H]androstenedione, [14C]11 beta-hydroxyandrostenedione, and [3H]testosterone as precursors. While pregnenolone was not converted to any other steroid, dehydroepiandrosterone was transformed mainly to 5-androstene-3 beta, 17 beta-diol. The products of 17 alpha-hydroxyprogesterone incubations were 5 beta-pregnane-3 alpha,17 alpha-diol-20-one, 5 beta-pregnane-3 alpha,17 alpha, 20 beta-triol, and 5 beta-pregnan-17 alpha-o1-3,20-dione. The major steroids of androstenedione incubations were etiocholanolone, testosterone, and androsterone. Testosterone was converted mainly to etiocholanolone and androstenedione, and only small quantities of 11 beta-hydroxytestosterone, 11-ketotestosterone, and 11-ketoandrostenedione were the metabolites found in 11 beta-hydroxyandrostenedione incubation. These results demonstrated the presence of the enzymes 5 alpha- and 5 beta-reductases and 3 alpha-, 11 beta-, 17 beta-, and 20 beta-hydroxysteroid dehydrogenases in the skin. From enzymehistochemical results it appeared that the steroid conversions take place in the epithelial cells. Moreover, the presence of UDP-glucose dehydrogenase, an enzyme involved in the synthesis of glucuronic acid, in these cells indicates the possibility of steroid glucuronide formation. Indeed significant amounts of water-soluble steroid conjugates, particularly 5 beta-dihydrotestosterone- and testosterone-glucuronide, were found in the incubations with androstenedione and testosterone, indicating the presence of the UDP-glucuronosyl transferase in the catfish skin. In the light of these results, a role of the skin of African catfish in the production of semiochemicals having pheromonal properties is discussed.
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Kunjara S, Sochor M, Ali SA, Greenbaum AL, McLean P. Hepatic phosphoribosyl pyrophosphate concentration. Regulation by the oxidative pentose phosphate pathway and cellular energy status. Biochem J 1987; 244:101-8. [PMID: 2444209 PMCID: PMC1147959 DOI: 10.1042/bj2440101] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Measurements have been made of the tissue content of phosphoribosyl pyrophosphate (PPRibP) and of a range of metabolic intermediates involved in the energy charge of the cell, the glycolytic and pentose phosphate pathways, and of the activity of the enzymes of the pentose phosphate pathway and of PPRibP synthetase (EC 2.7.6.1) in the livers of normal, diabetic, insulin-treated diabetic and starved rats and in livers of rats previously starved and then re-fed with high-fat or high-carbohydrate diets. Diabetes, starvation and high-fat diet all caused a fall in the hepatic PPRibP content, whereas insulin treatment and high-carbohydrate diet raised the tissue content. A positive correlation was shown between the PPRibP content and ATP, energy charge and the cytosolic [NAD+]/[NADH] quotient. A positive association between the PPRibP content and the flux of glucose through the pentose phosphate pathway and the synthesis of ribose 5-phosphate via the oxidative enzymes of that pathway, including ribose-5-phosphate isomerase (EC 5.3.1.6), was also observed. A negative correlation was found between the ADP, AMP and Pi contents, and no correlation existed between PPRibP content and the enzymes of the non-oxidative branch of the pentose phosphate pathway. There was no correlation between hepatic PPRibP content and the activity of PPRibP synthetase measured in vitro. These results are considered in relation to the control of PPRibP synthetase in the liver in vivo.
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Bibby MC, Double JA, Ali SA, Fearon KC, Brennan RA, Tisdale MJ. Characterization of a transplantable adenocarcinoma of the mouse colon producing cachexia in recipient animals. J Natl Cancer Inst 1987; 78:539-46. [PMID: 3546909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
MAC16 is a chemically induced, transplantable adenocarcinoma of the colon passaged in inbred NMRI mice. At small tumor burdens (less than 1% of the host weight), weight loss was observed without a reduction in food intake. As the tumor mass increased, weight loss also increased and reached 33% of host body weight in females and 20% in males when compared with the weight of age-matched controls. The reduction in host body weight was directly proportional to the tumor size and was reversible when the tumor was excised. There was a preferential loss of body fat in tumor-bearing animals with an increase in the plasma level of free fatty acids, although there was a minimal elevation of ketone bodies. Tumor growth was accompanied by progressive hypoglycemia and a reduction in the plasma insulin levels. The decrease in plasma insulin may have contributed to the catabolic effects of progressive tumor growth.
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Algranti E, Ali SA, Cuginotti AP. [The inadequacy of indiscriminate periodical radiological examinations in occupational health: results of the 1984 census in a large firm]. Rev Saude Publica 1986; 20:26-32. [PMID: 3749774 DOI: 10.1590/s0034-89101986000100003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
São aqui relatados os resultados do censo abreugráfico de 1984 de uma empresa de grande porte, isenta de riscos ocupacionais para o aparelho respiratório. Em 5,308 abreugrafias realizadas foram detectados 53 casos de anormalidades abreugráficas (1%), dos quais apenas 4 de tuberculose ativa. O rendimento foi de 0,75/1,000 abreugrafias. O custo médio de detecção de cada caso de tuberculose ativa foi de 256,32 ORTN (ao redor de 1.850 dólares). Foi também constatado um menor comparecimento de funcionários ao exame abreugráfico periódico, 1,6% de ausências em 1982 e 7,8% em 1984, causado provavelmente pelo crescente conhecimento leigo sobre radiações ionizantes, Os resultados são discutidos e é apresentada uma revisão sobre o emprego de exames radiológicos periódicos em saúde ocupacional.
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Abstract
Levels of vanadium and 29 other elements were measured in whole blood of 25 depressive patients, 13 recovered depressive, and 24 control subjects. Vanadium levels were normal in depressive patients, and did not change on recovery. Changes of doubtful significance were found in blood levels of copper, strontium and chromium on recovery from depressive illness. The depressive patients had reduced blood levels of caesium which increased towards normal on recovery. This finding is discussed in relation to pertinent neurochemical and behavioural effects of caesium.
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137
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Ali SA, Rees RC, Oxford J. Modulation of human natural killer cytotoxicity by influenza virus and its subunit protein. Immunol Suppl 1984; 52:687-95. [PMID: 6746000 PMCID: PMC1454638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The influence of intact influenza virus and purified detergent solubilized haemagglutinin (HA) subunits from these viruses on human natural killer (NK) cell activity was examined. Effector cells incubated with whole influenza virus for 18 hr initiated the production of alpha interferon which was associated with the enhancement of NK cell activity. In contrast, purified influenza virus HA suppressed NK activity in a dose-dependent manner, when added at the onset of the cytotoxicity assay, or when used to pre-treated effector cells prior to assay for cytotoxicity against K562 target cells. Effector cells exposed to influenza HA for 90 min, washed and re-incubated in fresh medium for up to 18 hr, failed to regain their cytotoxicity. Suppression of NK cell cytotoxicity could not be ascribed to direct toxicity of HA preparations or residual detergent and preservative in these preparations. The augmented cytotoxicity of activated human effector cells was also susceptible to suppression by virus HA, and pretreatment of human PBL effector cells with HA for 90 min, prior to exposure to human alpha interferon caused NK effector cells to become refractive to the enhancing effects of HIFN. That direct interaction between influenza virus HA and effector cells was a requirement for suppression of activity was shown in experiments using Bromelain-released influenza HA, which would not be expected to bind to cells and which failed to suppress NK cell activity.
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Ali SA, Hawrylowicz CM, Peel J, Griffith C, Ress RC. Human spleen cells mediating natural killing: altered natural cytotoxicity of spleen effector cells from patients with carcinoma. J Cancer Res Clin Oncol 1983; 106:202-9. [PMID: 6197418 DOI: 10.1007/bf00402609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Spleen cells from eight patients with abdominal carcinoma and six patients undergoing major surgery for a variety of disease entities were assayed for natural cytotoxicity towards 51Cr-labelled K 562 target cells. Patients with abdominal cancer were shown to have relatively weak splenic natural cytotoxicity compared with the reactivity of effector cells from non-carcinoma patients. Nylon wool non-adherent spleen effector cells from cancer patients showed reduced cytolytic capacity compared with effector cells prepared from the spleens of other patients or peripheral blood mononuclear cells (PBMC) obtained from healthy individuals, whereas the splenic reactivity of non-cancer patients showed the same nylon wool separation profile as PBMC, high cytolytic activity being associated with nylon wool non-adherent effector cells. Splenic effector cell cytotoxicity from cancer and non-cancer patients was enhanced following exposure to human interferon, and inhibited by treatment with cholera toxin and simple sugars. Furthermore, fractionation of spleen cells on Percoll discontinuous density gradients demonstrated natural cytotoxic activity to reside predominantly in the low density cell fractions, similar to that found with NK cells from peripheral blood. Thus the properties described here for human cytotoxic spleen cells are similar to those described for peripheral blood NK cells, suggesting these two effector cell populations to be closely related, if not identical.
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139
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Ali SA. Population planning broadcasts in Bangladesh. COMBROAD 1982:37-. [PMID: 12268415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
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140
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Proença NG, Kliemann TA, Ali SA. [Kveim test using antigens of sarcoid lymph nodes: preliminary results]. REVISTA PAULISTA DE MEDICINA 1979; 94:70-3. [PMID: 549193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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141
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Ayub S, Ali SA. Semisynthetic--broad spectrum oral penicillins. JPMA. THE JOURNAL OF THE PAKISTAN MEDICAL ASSOCIATION 1979; 29:154-8. [PMID: 113601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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142
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Ali SA, Gordon-Smith EC, Selhi HS. Kinetics of red cell membrane phosphorylation: altered affinity of HS membrane protein acceptors. Br J Haematol 1979; 42:225-30. [PMID: 465368 DOI: 10.1111/j.1365-2141.1979.tb01127.x] [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: 12/15/2022]
Abstract
Membrane ghosts were prepared from red blood cells of normal and hereditary spherocytosis (HS) subjects. Time dependent phosphorylation studies of the membrane (in the presence of gamma labelled AT32P) showed that the HS membrane appeared to incorporate less phosphate than the normal membrane but the results were not significantly different. Using the initial linear rate of phosphorylation and varying the ATP concentration, it was found that the Michaelis constant (Km) for the normal membrane was 24.8 microns ATP and Vmax was 0.120 nmol phosphate bound/mg membrane protein/min. These values for the HS membrane were found to be 39.0 and 0.118 respectively. In one family the affected mother and son each showed a positive cooperativity effect for similar reciprocal plots. This indicates that phosphorylation of various HS membrane proteins may be an ordered rather than random process and suggests biochemical heterogencity of the HS condition. The constants, Km and Vmax, however, were found to be similar to the rest of HS subjects studied. Crude extracts of the enzyme protein kinase, which catalyses the membrane phosphorylation, showed no significant difference in the Km and Vmax value in HS compared with that from normal red cells. The kinetic difference in phosphorylation is probably due to abnormalities in the membrane protein(s) which accept the phosphate from protein kinase in HS red cells.
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143
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Ayub S, Ali SA. Effect of certain tablet formulation factors on dissolution of aspirin tablets. JPMA. THE JOURNAL OF THE PAKISTAN MEDICAL ASSOCIATION 1979; 29:91-2. [PMID: 109641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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144
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Ali SA, Attia RM. Isolation of Bacillus thuringiensis for microbiological control of insects. ZENTRALBLATT FUR BAKTERIOLOGIE, PARASITENKUNDE, INFEKTIONSKRANKHEITEN UND HYGIENE. ZWEITE NATURWISSENSCHAFTLICHE ABTEILUNG: MIKROBIOLOGIE DER LANDWIRTSCHAFT DER TECHNOLOGIE UND DES UMWELTSCHUTZES 1978; 133:232-4. [PMID: 696044 DOI: 10.1016/s0323-6056(78)80007-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Eleven of 180 local isolates, belonging to Bacillus thuringiensis, were tested for their pathogenicity to pinkbollworm larvae (Pectinophora gossypiella). Three strains, namely RS-25, RS-35, and RS-45, showed a positive insecticidal activity. Their activities based on the crystalline inclusion bodies. The LD50 (hours) for larvae was 8, 12, and 6 hours, respectively.
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145
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Ali SA, Mahmood I, Khalid Q. An improved method for the extraction of cholesterol and phospholipids from the bovine spinal cord. PREPARATIVE BIOCHEMISTRY 1978; 8:113-8. [PMID: 568784 DOI: 10.1080/00327487808069053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A pharmacopoeial grade of cholesterol and a separate phospholipid fraction can be obtained by this simple extraction procedure of bovine spinal cord. The tissue is collected in 5% (Wt/V) formalin. It is then separated from the formalin solution, minced and dried in a hot-air oven at 105 degrees C. Total lipids are extracted with petroleum ether. The cholesterol is separated from the phospholipids by extraction with a mixture of petroleum ether and acetone. The method allows for not only the recovery of the phospholipids but also a high yield of cholesterol without using saponification or tedious purification procedures.
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146
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Attia RM, Ali SA. Utilization of agricultural wastes of Aspergillus awamori for the production of glucoamylase. ZENTRALBLATT FUR BAKTERIOLOGIE, PARASITENKUNDE, INFEKTIONSKRANKHEITEN UND HYGIENE. ZWEITE NATURWISSENSCHAFTLICHE ABT.: ALLGEMEINE, LANDWIRTSCHAFTLICHE UND TECHNISCHE MIKROBIOLOGIE 1977; 132:322-5. [PMID: 333823 DOI: 10.1016/s0044-4057(77)80021-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The principal industrial use of glucoamylase is in the production of crystalline D-glucose. Aspergillus awamori was used. Variations in the specific type of carbohydrate source affected the yield of enzyme markedly. Of all the substrates tried, maltose supported satisfactory enzyme yields. Sucrose, lactose, fructose, and galactose gave abundant growth which seemed to be necessary but no sufficient condition for maximum yields. The specificity of the carbohydrate structure for gluco-amylase production was tried. The synthesis of enzyme was significantly stimulated when two-third of the starch in the medium was replaced by maltose. The adaptation seemed to be specific to maltose structure, since the substitution of maltose by structurally related compounds, a.o. lactose, in the medium did not give a comparable glucoamylase yield. Maltose or compounds composed of maltose gave maximum yields of enzyme. These results seemed to favour the theory that glucoamylase production is adaptive. Agricultural wastes produced locally in large quantities from plants manufacturing starch and other products were discussed. Rice bran, followed by glucose syrup, corn bran, wheat bran, and can sugar molasses supported good yields of glucoamylase.
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147
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Attia RM, Ali SA. Simple and rapid colorimetric method for the microdetermination of alpha amylase. ZENTRALBLATT FUR BAKTERIOLOGIE, PARASITENKUNDE, INFEKTIONSKRANKHEITEN UND HYGIENE. ZWEITE NATURWISSENSCHAFTLICHE ABT.: ALLGEMEINE, LANDWIRTSCHAFTLICHE UND TECHNISCHE MIKROBIOLOGIE 1977; 132:193-5. [PMID: 412348 DOI: 10.1016/s0044-4057(77)80001-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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148
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Hasnain A, Siddiqui AQ, Ali SA. Starch gel electrophoretic studies on the serum, hemoglobin, eye lens & some other tissue proteins of Ophicephalus marulius (Bloch), soluble in low ionic strength salt solutions. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 1973; 11:347-9. [PMID: 4783394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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149
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Ross DA, Whitmarsh RB, Ali SA, Boudreaux JE, Coleman R, Fleisher RL, Girdler R, Manheim F, Matter A, Nigrini C, Stoffers P, Supko PR. Red Sea Drillings. Science 1973; 179:377-80. [PMID: 17843766 DOI: 10.1126/science.179.4071.377] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Recent drilling in the Red Sea has shown that much of the basin is underlain by evaporites of a similar age to that of evaporites found in the Mediterranean Sea. These evaporites and their structural positions indicate that other brine areas are present-and, indeed, several others have been discovered.
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150
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Ali SA, Powell JW, Whalley WB. The chemistry of fungi. LXVII. Synthesis of di-O-methylcitro-mycinone and related pyrano(3,2-c)(1)benzopyran-4,5-diones. JOURNAL OF THE CHEMICAL SOCIETY. PERKIN TRANSACTIONS 1 1973; 2:173-4. [PMID: 4736299 DOI: 10.1039/p19730000173] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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