Search

Your search keyword '"Bulaya, A."' showing total 57 results
Start Over Author "Bulaya, A."
57 results on '"Bulaya, A."'

52. Molecular cloning of a gene involved in glucose sensing in the yeast Saccharomyces cerevisiae

Author

Wim de Koning, Peter Durnez, Laurens Sierkstra, José Ramos, Stefan Hohmann, K Luyten, Maria José Neves, Patrick Van Dijck, Botchaka Bulaya, Linda Van Aelst, Johan M. Thevelein, Neuza Maria de Magalhães-Rocha, Rogélio Lopes Brandão, Mieke Vanhalewyn, Paola Coccetti, R Alijo, Enzo Martegani, Van Aelst, L, Hohmann, S, Bulaya, B, de Koning, W, Sierkstra, L, Neves, M, Luyten, K, Alijo, R, Ramos, J, Coccetti, P, Martegani, E, de Magalhães‐Rocha, N, Brandão, R, Van Dijck, P, Vanhalewyn, M, Durnez, P, Null, A, and Thevelein, J

Subjects
Glycoside Hydrolases, Saccharomyces cerevisiae, Mutant, Genes, Fungal, Molecular Sequence Data, Catabolite repression, Biology, Microbiology, Gene product, Open Reading Frames, Gene Expression Regulation, Fungal, Hexokinase, Sequence Homology, Nucleic Acid, Genes, Regulator, Sugar transporter, Amino Acid Sequence, Cloning, Molecular, Genes, Suppressor, Molecular Biology, Alleles, Regulation of gene expression, Base Sequence, beta-Fructofuranosidase, Methanobacterium, alpha-Glucosidases, Metabolism, biology.organism_classification, Yeast, Glucose, Phenotype, Biochemistry, Glucosyltransferases, Enzyme Induction, Glycolysis, Gene Deletion, Signal Transduction
Abstract

Cells of the yeast Saccharomyces cerevisiae display a wide range of glucose‐induced regulatory phenomena, including glucose‐induced activation of the RAS‐adenylate cyclase pathway and phosphatidylinositol turnover, rapid post‐translational effects on the activity of different enzymes as well as long‐term effects at the transcriptional level. A gene called GGS1 (for General Glucose Sensor) that is apparently required for the glucose‐induced regulatory effects and several ggs1 alleles (fdp1, byp1 and cif1) has been cloned and characterized. A GGS1 homologue is present in Methanobacterium thermoautotrophicum. Yeast ggs1 mutants are unable to grow on glucose or related readily fermentable sugars, apparently owing to unrestricted influx of sugar into glycolysis, resulting in its rapid deregulation. Levels of intracellular free glucose and metabolites measured over a period of a few minutes after addition of glucose to cells of a ggsi1Δ strain are consistent with our previous suggestion of a functional interaction between a sugar transporter, a sugar kinase and the GGS1 gene product. Such a glucose‐sensing system might both restrict the influx of glucose and activate several signal transduction pathways, leading to the wide range of glucose‐induced regulatory phenomena. Deregulation of these pathways in ggs1 mutants might explain phenotypic defects observed in the absence of glucose, e.g. the inability of ggs1 diploids to sporulate. Copyright © 1993, Wiley Blackwell. All rights reserved

Published
1993

53. Characteristics of women terminating pregnancies at the University Teaching Hospital, Lusaka, Zambia

Author

K S, Baboo, Y, Ahmed, S, Siziya, and R, Bulaya

Subjects
Adult, Health Services Needs and Demand, Adolescent, Marital Status, Zambia, Middle Aged, Hospitals, University, Pregnancy, Family Planning Services, Population Surveillance, Abortion, Legal, Educational Status, Humans, Female, Maternal Age
Abstract

Abortion in Zambia is liberalized. A hospital based study to determine characteristics of women having legal abortion was conducted at the University Teaching Hospital, Lusaka, Zambia. A total of 200 participants attending a Gynaecological clinic were interviewed from March to May 1993. The clients' five year age groups between 15 and 45 years were about equally represented in the study and 113 (56.5 pc) clients were of single status, out of which 10 (15.9 pc) were students. The respondents were fairly educated with 140 (70.0 pc) having attained secondary education. The mean gestation was 8.3 (standard deviation 2.2) weeks. About one half (52.5 pc) of the clients had used no contraception method. We conclude that use of contraceptives was low and hence there was a need for expanded family planning education and making contraceptives available to all concerned, including students, in order to reduce the abortion rate.

Published
1994

54. Molecular cloning of a gene involved in glucose sensing in the yeast Saccharomyces cerevisiae

Author

Aelst, Linda, primary, Hohmann, Stefan, additional, Bulaya, Botchaka, additional, Koning, Wim, additional, Sierkstra, Laurens, additional, Neves, Maria José, additional, Luyten, Kattie, additional, Alijo, Rafael, additional, Ramos, José, additional, Coccetti, Paola, additional, Martegani, Enzo, additional, Magalhães-Rocha, Neuza Maria, additional, Brandão, Rogelio Lopes, additional, Dijck, Patrick, additional, Vanhalewyn, Mieke, additional, Durnez, Peter, additional, and Thevelein, Johan M., additional

Published
1993
Full Text
View/download PDF

55. Molecular cloning of a gene involved in glucose sensing in the yeast Saccharomyces cerevisiae.

Author

Van Aelst, Linda, Hohmann, Stefan, Bulaya, Botchaka, De Koning, Wim, Sterkstra, Laurens, Neves, Maria José, Luyten, Kattie, Alijo, Rafael, Ramos, José, Coccetti, Paola, Martegani, Enzo, De Magalhães-Rocha, Neuza Maria, Brandão, Rogelio Lopes, Van Dijck, Patrick, Vanhalewyn, Mieke, Durnez, Peter, Jans, Arnold W. H., and Thevelein, Johan M.

Subjects
SACCHAROMYCES cerevisiae, SACCHAROMYCES, MOLECULAR cloning, PHENOTYPES, METABOLITES
Abstract

Cells of the yeast Saccharomyces cerevisiae display a wide range of glucose-induced regulatory phenomena, including glucose-induced activation of the RAS-adenylate cyclase pathway and phosphatidylinositol turnover, rapid post-translational effects on the activity of different enzymes as well as long-term effects at the transcriptional level. A gene called GGS1 (for General Glucose Sensor) that is apparently required for the glucose-induced regulatory effects and several ggs1 alleles (fdp1, byp1 and cif1) has been cloned end characterized. A GGS1 homologue is present in Methanobacterium thermoautotrophicum. Yeast ggs1 mutants are unable to grow on glucose or related readily fermentable sugars, apparently owing to unrestricted influx of sugar into glycolysis, resulting in its rapid deregulation. Levels of intracellular free glucose and metabolites measured over a period of a few minutes after addition of glucose to cells of a ggs1Δ strain are consistent with our previous suggestion of a functional interaction between a sugar transporter, a sugar kinase and the GGS1 gene product. Such a glucose-sensing system might both restrict the influx of glucose and activate several signal transduction pathways, leading to the wide range of glucose-induced regulatory phenomena. De-regulation of these pathways in ggs1 mutants might explain phenotypic defects observed in the absence of glucose, e.g. the inability of ggs1 diploids to sporulate. [ABSTRACT FROM AUTHOR]

Published
1993
Full Text
View/download PDF

56. Routine versus clinically driven laboratory monitoring of HIV antiretroviral therapy in Africa (DART): a randomised non-inferiority trial

Author

DART Trial Team, Mugyenyi, P, Walker, AS, Hakim, J, Munderi, P, Gibb, DM, Kityo, C, Reid, A, Grosskurth, H, Darbyshire, JH, Ssali, F, Bray, D, Katabira, E, Babiker, AG, Gilks, CF, Kabuye, G, Nsibambi, D, Kasirye, R, Zalwango, E, Nakazibwe, M, Kikaire, B, Nassuna, G, Massa, R, Fadhiru, K, Namyalo, M, Zalwango, A, Generous, L, Khauka, P, Rutikarayo, N, Nakahima, W, Mugisha, A, Todd, J, Levin, J, Muyingo, S, Ruberantwari, A, Kaleebu, P, Yirrell, D, Ndembi, N, Lyagoba, F, Hughes, P, Aber, M, Lara, A Medina, Foster, S, Amurwon, J, Wakholi, B Nyanzi, Whitworth, J, Wangati, K, Amuron, B, Kajungu, D, Nakiyingi, J, Omony, W, Tumukunde, D, Otim, T, Kabanda, J, Musana, H, Akao, J, Kyomugisha, H, Byamukama, A, Sabiiti, J, Komugyena, J, Wavamunno, P, Mukiibi, S, Drasiku, A, Byaruhanga, R, Labeja, O, Katundu, P, Tugume, S, Awio, P, Namazzi, A, Bakeinyaga, GT, Katabira, H, Abaine, D, Tukamushaba, J, Anywar, W, Ojiambo, W, Angweng, E, Murungi, S, Haguma, W, Atwiine, S, Kigozi, J, Namale, L, Mukose, A, Mulindwa, G, Atwiine, D, Muhwezi, A, Nimwesiga, E, Barungi, G, Takubwa, J, Mwebesa, D, Kagina, G, Mulindwa, M, Ahimbisibwe, F, Mwesigwa, P, Akuma, S, Zawedde, C, Nyiraguhirwa, D, Tumusiime, C, Bagaya, L, Namara, W, Karungi, J, Kankunda, R, Enzama, R, Latif, A, Robertson, V, Chidziva, E, Bulaya-Tembo, R, Musoro, G, Taziwa, F, Chimbetete, C, Chakonza, L, Mawora, A, Muvirimi, C, Tinago, G, Svovanapasis, P, Simango, M, Chirema, O, Machingura, J, Mutsai, S, Phiri, M, Bafana, T, Chirara, M, Muchabaiwa, L, Muzambi, M, Mutowo, J, Chivhunga, T, Chigwedere, E, Pascoe, M, Warambwa, C, Zengeza, E, Mapinge, F, Makota, S, Jamu, A, Ngorima, N, Chirairo, H, Chitsungo, S, Chimanzi, J, Maweni, C, Warara, R, Matongo, M, Mudzingwa, S, Jangano, M, Moyo, K, Vere, L, Mdege, N, Machingura, I, Ronald, A, Kambungu, A, Lutwama, F, Mambule, I, Nanfuka, A, Walusimbi, J, Nabankema, E, Nalumenya, R, Namuli, T, Kulume, R, Namata, I, Nyachwo, L, Florence, A, Kusiima, A, Lubwama, E, Nairuba, R, Oketta, F, Buluma, E, Waita, R, Ojiambo, H, Sadik, F, Wanyama, J, Nabongo, P, Oyugi, J, Sematala, F, Muganzi, A, Twijukye, C, Byakwaga, H, Ochai, R, Muhweezi, D, Coutinho, A, Etukoit, B, Gilks, C, Boocock, K, Puddephatt, C, Grundy, C, Bohannon, J, Winogron, D, Burke, A, Babiker, A, Wilkes, H, Rauchenberger, M, Sheehan, S, Spencer-Drake, C, Taylor, K, Spyer, M, Ferrier, A, Naidoo, B, Dunn, D, Goodall, R, Peto, L, Nanfuka, R, Mufuka-Kapuya, C, Pillay, D, McCormick, A, Weller, I, Bahendeka, S, Bassett, M, Wapakhabulo, A Chogo, Gazzard, B, Mapuchere, C, Mugurungi, O, Burke, C, Jones, S, Newland, C, Pearce, G, Rahim, S, Rooney, J, Smith, M, Snowden, W, Steens, J-M, Breckenridge, A, McLaren, A, Hill, C, Matenga, J, Pozniak, A, Serwadda, D, Peto, T, Palfreeman, A, and Borok, M

Subjects
Male, Neutrophils, HIV Infections, law.invention, Hemoglobins, Randomized controlled trial, law, Medicine, Urea, HIV-Associated Lipodystrophy Syndrome, Hazard ratio, Lamivudine, Anemia, General Medicine, Middle Aged, Viral Load, Anti-Retroviral Agents, Creatinine, Disease Progression, RNA, Viral, Female, Drug Monitoring, Zidovudine, medicine.drug, Glomerular Filtration Rate, Adult, medicine.medical_specialty, Neutropenia, Adolescent, Organophosphonates, Acquired immunodeficiency syndrome (AIDS), Internal medicine, Fast track — Articles, Humans, Nevirapine, Adverse effect, Tenofovir, Aged, Intention-to-treat analysis, business.industry, Adenine, medicine.disease, Dideoxynucleosides, CD4 Lymphocyte Count, Clinical trial, Clinical research, Immunology, Africa, HIV-1, business
Abstract

BACKGROUND: HIV antiretroviral therapy (ART) is often managed without routine laboratory monitoring in Africa; however, the effect of this approach is unknown. This trial investigated whether routine toxicity and efficacy monitoring of HIV-infected patients receiving ART had an important long-term effect on clinical outcomes in Africa. METHODS: In this open, non-inferiority trial in three centres in Uganda and one in Zimbabwe, 3321 symptomatic, ART-naive, HIV-infected adults with CD4 counts less than 200 cells per microL starting ART were randomly assigned to laboratory and clinical monitoring (LCM; n=1659) or clinically driven monitoring (CDM; n=1662) by a computer-generated list. Haematology, biochemistry, and CD4-cell counts were done every 12 weeks. In the LCM group, results were available to clinicians; in the CDM group, results (apart from CD4-cell count) could be requested if clinically indicated and grade 4 toxicities were available. Participants switched to second-line ART after new or recurrent WHO stage 4 events in both groups, or CD4 count less than 100 cells per microL (LCM only). Co-primary endpoints were new WHO stage 4 HIV events or death, and serious adverse events. Non-inferiority was defined as the upper 95% confidence limit for the hazard ratio (HR) for new WHO stage 4 events or death being no greater than 1.18. Analyses were by intention to treat. This study is registered, number ISRCTN13968779. FINDINGS: Two participants assigned to CDM and three to LCM were excluded from analyses. 5-year survival was 87% (95% CI 85-88) in the CDM group and 90% (88-91) in the LCM group, and 122 (7%) and 112 (7%) participants, respectively, were lost to follow-up over median 4.9 years' follow-up. 459 (28%) participants receiving CDM versus 356 (21%) LCM had a new WHO stage 4 event or died (6.94 [95% CI 6.33-7.60] vs 5.24 [4.72-5.81] per 100 person-years; absolute difference 1.70 per 100 person-years [0.87-2.54]; HR 1.31 [1.14-1.51]; p=0.0001). Differences in disease progression occurred from the third year on ART, whereas higher rates of switch to second-line treatment occurred in LCM from the second year. 283 (17%) participants receiving CDM versus 260 (16%) LCM had a new serious adverse event (HR 1.12 [0.94-1.32]; p=0.19), with anaemia the most common (76 vs 61 cases). INTERPRETATION: ART can be delivered safely without routine laboratory monitoring for toxic effects, but differences in disease progression suggest a role for monitoring of CD4-cell count from the second year of ART to guide the switch to second-line treatment. FUNDING: UK Medical Research Council, the UK Department for International Development, the Rockefeller Foundation, GlaxoSmithKline, Gilead Sciences, Boehringer-Ingelheim, and Abbott Laboratories.

Full Text
View/download PDF

57. Impact of second-line antiretroviral regimens on lipid profiles in an African setting: The DART trial sub-study

Author

Gomo, Z. A. R., Hakim, J. G., Walker, S. A., Tinago, W., Mandozana, G., Kityo, C., Munderi, P., Katabira, E., Reid, A., Gibb, D. M., Gilks, C. F., Grosskurth, H., Kabuye, G., Nsibambi, D., Kasirye, R., Zalwango, E., Nakazibwe, M., Kikaire, B., Nassuna, G., Massa, R., Fadhiru, K., Namyalo, M., Zalwango, A., Generous, L., Khauka, P., Rutikarayo, N., Nakahima, W., Mugisha, A., Todd, J., Levin, J., Muyingo, S., Ruberantwari, A., Kaleebu, P., Yirrell, D., Ndembi, N., Lyagoba, F., Hughes, P., Aber, M., Lara, A. M., Medina, A., Foster, S., Amurwon, J., Wakholi, B. N., Nyanzi, B., Wangati, K., Amuron, B., Kajungu, D., Nakiyingi, J., Omony, W., Mugyenyi, P., Ssali, F., Tumukunde, D., Otim, T., Kabanda, J., Musana, H., Akao, J., Kyomugisha, H., Byamukama, A., Sabiiti, J., Komugyena, J., Wavamunno, P., Mukiibi, S., Drasiku, A., Byaruhanga, R., Labeja, O., Katundu, P., Tugume, S., Awio, P., Namazzi, A., Bakeinyaga, G. T., Abaine, D., Tukamushaba, J., Anywar, W., Ojiambo, W., Angweng, E., Murungi, S., Haguma, W., Atwiine, S., Kigozi, J., Namale, L., Mukose, A., Mulindwa, G., Atwiine, D., Muhwezi, A., Nimwesiga, E., Barungi, G., Takubwa, J., Mwebesa, D., Kagina, G., Mulindwa, M., Ahimbisibwe, F., Mwesigwa, P., Akuma, S., Zawedde, C., Nyiraguhirwa, D., Tumusiime, C., Bagaya, L., Namara, W., Karungi, J., Kankunda, R., Enzama, R., Latif, A., Robertson, V., Chidziva, E., Bulaya-Tembo, R., Musoro, G., Taziwa, F., Chimbetete, C., Chakonza, L., Mawora, A., Muvirimi, C., Svovanapasis, P., Simango, M., Chirema, O., Machingura, J., Mutsai, S., Phiri, M., Bafana, T., Chirara, M., Muchabaiwa, L., Muzambi, M., Chigwedere, E., Pascoe, M., Warambwa, C., Zengeza, E., Mapinge, F., Makota, S., Jamu, A., Ngorima, N., Chirairo, H., Chitsungo, S., Chimanzi, J., Maweni, C., Warara, R., Matongo, M., Mudzingwa, S., Jangano, M., Moyo, K., Vere, L., Machingura, I., Ronald, A., Kambungu, A., Lutwama, F., Mambule, I., Nanfuka, A., Walusimbi, J., Nabankema, E., Nalumenya, R., Namuli, T., Kulume, R., Namata, I., Nyachwo, L., Florence, A., Kusiima, A., Lubwama, E., Nairuba, R., Oketta, F., Buluma, E., Waita, R., Ojiambo, H., Sadik, F., Wanyama, J., Nabongo, P., Oyugi, J., Sematala, F., Muganzi, A., Twijukye, C., Byakwaga, H., Ochai, R., Muhweezi, D., Coutinho, A., Etukoit, B., Boocock, K., Puddephatt, C., Grundy, C., Bohannon, J., Winogron, D., Darbyshire, J., Burke, A., Bray, D., Babiker, A., Wilkes, H., Rauchenberger, M., Sheehan, S., Spencer-Drake, C., Taylor, K., Spyer, M., Ferrier, A., Naidoo, B., Dunn, D., Ruth Goodall, Nanfuka, R., Mufuka-Kapuya, C., Pillay, D., Goodall, R., Kapaata, A., Katuramur, M., Magala, R., Magambo, B., Mataruka, K., Mccormick, A., Mugarura, L., Musunga, T., Nabankkema, M., Nkalubo, J., Nkurunziza, P., Parry, C., Weller, I., Bahendeka, S., Bassett, M., Chogo Wapakhabulo, A., Gazzard, B., Mapuchere, C., Mugurungi, O., Burke, C., Distel, M., Jones, S., Loeliger, E., Naidoo, P., Newland, C., Pearce, G., Rahim, S., Rooney, J., Smith, M., Snowden, W., Steens, J. -M, Breckenridge, A., Mclaren, A., Hill, C., Matenga, J., Pozniak, A., Serwadda, D., Peto, T., Palfreeman, A., and Borok, M.

Catalog

Books, media, physical & digital resources
See catalog results