Publications


Submitted

K, PROFNDELEJOHNSON.  Submitted.  Geriatric Clinical Pharmacology. The Pharmacokinetic . Journal of Medicine Vol. 2 No. 5 pp 2-8. : University of Nairobi Press Abstract
The present studies were designed and carried out to determine if hydrogen peroxide (H2O2) is involved in the regulation of erythropoietin (Epo) gene expression and stimulation of Epo production in the hepatocellular (Hep 3B) cells. Hep 3B cells were incubated with varying concentrations of H2O2 for periods of 6 hours or 24 hours. In other experiments Hep 3B cells were incubated for 24 hours with or without increasing concentrations of catalase and in the presence of H2O2. Culture medium levels of Epo were determined and quantitation of Epo mRNA was also made. The results indicate that H2O2 increases the levels of Epo mRNA and Epo hormone production in Hep 3B cells, and that catalase, the specific scavenger of hydrogen peroxide, inhibits Epo production in these cells. Based on these findings, it is concluded that H2O2 takes part in the signal transduction mechanisms in Epo production. It is recommended that further studies be undertaken to find out the source of the hydrogen peroxide in the hepatocellular carcinoma cells.
K, PROFNDELEJOHNSON.  Submitted.  Academia . The Nairobi Journal of Medicine Vo. 19 No. 2 pp 30-34.. : University of Nairobi Press Abstract
The present studies were designed and carried out to determine if hydrogen peroxide (H2O2) is involved in the regulation of erythropoietin (Epo) gene expression and stimulation of Epo production in the hepatocellular (Hep 3B) cells. Hep 3B cells were incubated with varying concentrations of H2O2 for periods of 6 hours or 24 hours. In other experiments Hep 3B cells were incubated for 24 hours with or without increasing concentrations of catalase and in the presence of H2O2. Culture medium levels of Epo were determined and quantitation of Epo mRNA was also made. The results indicate that H2O2 increases the levels of Epo mRNA and Epo hormone production in Hep 3B cells, and that catalase, the specific scavenger of hydrogen peroxide, inhibits Epo production in these cells. Based on these findings, it is concluded that H2O2 takes part in the signal transduction mechanisms in Epo production. It is recommended that further studies be undertaken to find out the source of the hydrogen peroxide in the hepatocellular carcinoma cells.

2007

K, PROFNDELEJOHNSON.  2007.  Munyao TM, Abinya NA, Ndele JK, Kitili PN, Maimba JM, Kamuri EN, Wanyika HW.Exfoliative erythroderma at Kenyatta National Hospital, Nairobi. East Afr Med J. 2007 Dec;84(12):566-70.. Journal of Dental Research.. : University of Nairobi Press Abstract
BACKGROUND: Exfoliative erythroderma (EE), (Synonyms: Exfoliative dermatitis, Red man syndrome) is a clinical syndrome characterised by generalised erythema and scale. It is an important cause of functional skin failure and associated high morbidity and variable mortality rates. OBJECTIVES: To study demographics, aetiology, complications and clinical outcomes of exfoliative erythroderma (EE) on patients attending Kenyatta National Hospital (KNH). DESIGN: Cross- sectional descriptive study. SETTING: Kenyatta National Hospital, Dermatology Unit. SUBJECTS: All available medical records on inpatients seen by qualified dermatologists at KNH with generalised erythema and scale from 1996 to 2006. MAIN OUTCOME MEASURES: Discharge or death. RESULTS: Incidence exfoliative erythroderma was documented in 146 out of all 123 admissions (13%) into the dermatology unit from 1996-2006. Demographic mean age was 47 years, M: F ratio was 3:2, 67% had no income and 53% and 30% were residents of Nairobi and adjacent districts respectively. Sixty three percent were due to skin diseases, 23% due to systemic diseases of which 20% were due to HIV/AIDS and 14% due to adverse cutaneous drug reactions. Ninety percent of patients were treated and discharged and 10% died; 50% of whom had dermatoses and 29% due to HIV associated antituberculous drugs. CONCLUSIONS: Exfoliative erythroderma is an important cause of morbidity, admission and mortality in patients attending KNH. Dermatoses and HIV / AIDS were the most frequent causes. The mortality rate was relatively low and attributable to controllable diseases.

1997

K, PROFNDELEJOHNSON.  1997.  Guidelines torational drug use Edited by Fr. Von. Massow, J.K. Ndele and R. Korte MacMillan Education Ltd., Publishers, 1997. MacMillan Education Ltd., Publishers, 1997. : University of Nairobi Press Abstract
Texbook:

1996

K, PROFNDELEJOHNSON.  1996.  Ndele JK, Yoshioka K, Fisher JW.Hydrogen peroxide in the regulation of erythropoietin (Epo) gene expression in hepatocellular carcinoma cells. East Afr Med J. 1996 Feb;73(2):143-6.. The Nairobi Journal of Medicine Vol. 19, No. 1 pp 8-12, 1996.. : University of Nairobi Press Abstract
The present studies were designed and carried out to determine if hydrogen peroxide (H2O2) is involved in the regulation of erythropoietin (Epo) gene expression and stimulation of Epo production in the hepatocellular (Hep 3B) cells. Hep 3B cells were incubated with varying concentrations of H2O2 for periods of 6 hours or 24 hours. In other experiments Hep 3B cells were incubated for 24 hours with or without increasing concentrations of catalase and in the presence of H2O2. Culture medium levels of Epo were determined and quantitation of Epo mRNA was also made. The results indicate that H2O2 increases the levels of Epo mRNA and Epo hormone production in Hep 3B cells, and that catalase, the specific scavenger of hydrogen peroxide, inhibits Epo production in these cells. Based on these findings, it is concluded that H2O2 takes part in the signal transduction mechanisms in Epo production. It is recommended that further studies be undertaken to find out the source of the hydrogen peroxide in the hepatocellular carcinoma cells.

1993

K, PROFNDELEJOHNSON.  1993.  The metabolism of debrisoquine among Africans in Kenyan Population. By J.K. Ndele. Medical Review-journal of Medicine . Medical Review-journal of Medicine . : University of Nairobi Press Abstract
The present studies were designed and carried out to determine if hydrogen peroxide (H2O2) is involved in the regulation of erythropoietin (Epo) gene expression and stimulation of Epo production in the hepatocellular (Hep 3B) cells. Hep 3B cells were incubated with varying concentrations of H2O2 for periods of 6 hours or 24 hours. In other experiments Hep 3B cells were incubated for 24 hours with or without increasing concentrations of catalase and in the presence of H2O2. Culture medium levels of Epo were determined and quantitation of Epo mRNA was also made. The results indicate that H2O2 increases the levels of Epo mRNA and Epo hormone production in Hep 3B cells, and that catalase, the specific scavenger of hydrogen peroxide, inhibits Epo production in these cells. Based on these findings, it is concluded that H2O2 takes part in the signal transduction mechanisms in Epo production. It is recommended that further studies be undertaken to find out the source of the hydrogen peroxide in the hepatocellular carcinoma cells.

1991

K, PROFNDELEJOHNSON.  1991.  Potency ratios between Netilimicin/Gentamicin by J.K. Ndele. The Nairobi Journal of Medicine Volume 17 No. 2 51-53 1991.. The Nairobi Journal of Medicine Volume 17 No. 2 51-53 1991.. : University of Nairobi Press Abstract
The present studies were designed and carried out to determine if hydrogen peroxide (H2O2) is involved in the regulation of erythropoietin (Epo) gene expression and stimulation of Epo production in the hepatocellular (Hep 3B) cells. Hep 3B cells were incubated with varying concentrations of H2O2 for periods of 6 hours or 24 hours. In other experiments Hep 3B cells were incubated for 24 hours with or without increasing concentrations of catalase and in the presence of H2O2. Culture medium levels of Epo were determined and quantitation of Epo mRNA was also made. The results indicate that H2O2 increases the levels of Epo mRNA and Epo hormone production in Hep 3B cells, and that catalase, the specific scavenger of hydrogen peroxide, inhibits Epo production in these cells. Based on these findings, it is concluded that H2O2 takes part in the signal transduction mechanisms in Epo production. It is recommended that further studies be undertaken to find out the source of the hydrogen peroxide in the hepatocellular carcinoma cells.

1990

K, PROFNDELEJOHNSON.  1990.  The pharmacokinetics of netilmicin by J.K. Ndele. The Nairobi Journal of Medicine Volume 15 No. 1 42-48 1990.. The Nairobi Journal of Medicine Volume 15 No. 1 42-48 1990.. : University of Nairobi Press Abstract
The present studies were designed and carried out to determine if hydrogen peroxide (H2O2) is involved in the regulation of erythropoietin (Epo) gene expression and stimulation of Epo production in the hepatocellular (Hep 3B) cells. Hep 3B cells were incubated with varying concentrations of H2O2 for periods of 6 hours or 24 hours. In other experiments Hep 3B cells were incubated for 24 hours with or without increasing concentrations of catalase and in the presence of H2O2. Culture medium levels of Epo were determined and quantitation of Epo mRNA was also made. The results indicate that H2O2 increases the levels of Epo mRNA and Epo hormone production in Hep 3B cells, and that catalase, the specific scavenger of hydrogen peroxide, inhibits Epo production in these cells. Based on these findings, it is concluded that H2O2 takes part in the signal transduction mechanisms in Epo production. It is recommended that further studies be undertaken to find out the source of the hydrogen peroxide in the hepatocellular carcinoma cells.

1989

K, PROFNDELEJOHNSON.  1989.  Interactions of commonly used drugs in Therapeutics, by J.K. Ndele. The Nairobi Journal of Medicine Vol. 15, No. 2 107-113, 1989. The Nairobi Journal of Medicine Vol. 15, No. 2 107-113, 1989. : University of Nairobi Press Abstract
The present studies were designed and carried out to determine if hydrogen peroxide (H2O2) is involved in the regulation of erythropoietin (Epo) gene expression and stimulation of Epo production in the hepatocellular (Hep 3B) cells. Hep 3B cells were incubated with varying concentrations of H2O2 for periods of 6 hours or 24 hours. In other experiments Hep 3B cells were incubated for 24 hours with or without increasing concentrations of catalase and in the presence of H2O2. Culture medium levels of Epo were determined and quantitation of Epo mRNA was also made. The results indicate that H2O2 increases the levels of Epo mRNA and Epo hormone production in Hep 3B cells, and that catalase, the specific scavenger of hydrogen peroxide, inhibits Epo production in these cells. Based on these findings, it is concluded that H2O2 takes part in the signal transduction mechanisms in Epo production. It is recommended that further studies be undertaken to find out the source of the hydrogen peroxide in the hepatocellular carcinoma cells.

1981

K, PROFNDELEJOHNSON.  1981.  Dissociation of the Urinary Excretion of N-acetylglucosaminidase (AG) and B2 . M.Journal of applied Toxicology Vol. 1 No. 4 1981, 44-45. : University of Nairobi Press Abstract
The present studies were designed and carried out to determine if hydrogen peroxide (H2O2) is involved in the regulation of erythropoietin (Epo) gene expression and stimulation of Epo production in the hepatocellular (Hep 3B) cells. Hep 3B cells were incubated with varying concentrations of H2O2 for periods of 6 hours or 24 hours. In other experiments Hep 3B cells were incubated for 24 hours with or without increasing concentrations of catalase and in the presence of H2O2. Culture medium levels of Epo were determined and quantitation of Epo mRNA was also made. The results indicate that H2O2 increases the levels of Epo mRNA and Epo hormone production in Hep 3B cells, and that catalase, the specific scavenger of hydrogen peroxide, inhibits Epo production in these cells. Based on these findings, it is concluded that H2O2 takes part in the signal transduction mechanisms in Epo production. It is recommended that further studies be undertaken to find out the source of the hydrogen peroxide in the hepatocellular carcinoma cells.

1980

K, PROFNDELEJOHNSON.  1980.  Netilimicin toxicity in Man. A volunteer study. Ndele, J.K. and Keaney N.P. Clinical Trials Journal (London) 1980, 17,6,346-351.. Clinical Trials Journal (London) 1980, 17,6,346-351.. : University of Nairobi Press Abstract
The present studies were designed and carried out to determine if hydrogen peroxide (H2O2) is involved in the regulation of erythropoietin (Epo) gene expression and stimulation of Epo production in the hepatocellular (Hep 3B) cells. Hep 3B cells were incubated with varying concentrations of H2O2 for periods of 6 hours or 24 hours. In other experiments Hep 3B cells were incubated for 24 hours with or without increasing concentrations of catalase and in the presence of H2O2. Culture medium levels of Epo were determined and quantitation of Epo mRNA was also made. The results indicate that H2O2 increases the levels of Epo mRNA and Epo hormone production in Hep 3B cells, and that catalase, the specific scavenger of hydrogen peroxide, inhibits Epo production in these cells. Based on these findings, it is concluded that H2O2 takes part in the signal transduction mechanisms in Epo production. It is recommended that further studies be undertaken to find out the source of the hydrogen peroxide in the hepatocellular carcinoma cells.
K, PROFNDELEJOHNSON.  1980.  The Nephrotoxity of Netilmicin and Gentamicin . M.Sc. thesis in Clinical Pharmacology 1980, University of Nairobi. : University of Nairobi Press Abstract
The present studies were designed and carried out to determine if hydrogen peroxide (H2O2) is involved in the regulation of erythropoietin (Epo) gene expression and stimulation of Epo production in the hepatocellular (Hep 3B) cells. Hep 3B cells were incubated with varying concentrations of H2O2 for periods of 6 hours or 24 hours. In other experiments Hep 3B cells were incubated for 24 hours with or without increasing concentrations of catalase and in the presence of H2O2. Culture medium levels of Epo were determined and quantitation of Epo mRNA was also made. The results indicate that H2O2 increases the levels of Epo mRNA and Epo hormone production in Hep 3B cells, and that catalase, the specific scavenger of hydrogen peroxide, inhibits Epo production in these cells. Based on these findings, it is concluded that H2O2 takes part in the signal transduction mechanisms in Epo production. It is recommended that further studies be undertaken to find out the source of the hydrogen peroxide in the hepatocellular carcinoma cells.

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