Musau, J. K.1*, Mbaria, J. M.1, Nguta, J.M.1, Mbaabu, M.2, Kiama 'Mosquito repellency and knockdown effect of a plant based formulation'IOSR Journal Of Pharmacy www.iosrphr.org (e)-ISSN: 2250-3013, (p)-ISSN: 2319-4219 Volume 6, Issue 5 (May 2016), PP. 09-14.


Musau J. K.1*, Mbaria J. M.1 , Nguta J. M.1 , Mbaabu M.2 and Kiama S. G.2"Evaluation of genotoxicity potential of plants traditionally used for mosquito control in Kenya’s South coast.Merit Research Journal of Medicine and Medical Sciences (ISSN: 2354-323X) Vol. 4(4) pp. 178-182, April, 2016 Available online http://www.meritresearchjournals.org/mms/index.htm Copyright © 2016 Merit Research Journals .Read More...


Omwenga, I., Kanja, L., Nguta, J.M., Mbaria, J.M., Irungu, P., 2016.Organochlorine pesticide residues in farmed fish in Machakos and Kiambucounties, Kenya. Environmental Chemistry, Pollution & Waste Management.DOI 10.1080/23311843.2016.1153215 (in press).


Nguta, J.M., Appiah-Opong, R., Nyarko, A.K., Yeboah-Manu, D., Addo,G.A., Otchere, I., Kissi-Twum, A., 2016. Antimycobacterial and cytotoxic activity of selected medicinal plant extracts. Journal of Ethnopharmacology182, 10–15


Kiraithe, M.N., Nguta, J.M., Mbaria, J.M., Kiama, S.G., 2016. Evaluation of the use of Ocimum suave Willd. (Lamiaceae), Plectranthus barbatus Andrews (Lamiaceae) and Zanthoxylum chalybeum Engl. (Rutaceae) as antimalarial remedies in Kenyan folk medicine. Journal of
Ethnopharmacology. 178, 266–271.


Duncan, C.M., Catherine, L., Saiffudin, D., Nguta, J.M., 2015. In vitro antimicrobial activity of selected medicinal plants in Losho, Narok County, Kenya. International Research Journal of Pharmacy. 6 (12)


Nguta, J.M., Appiah-Opong, R., Nyarko, A.K., Yeboah-Manu, D., Addo,G.A., 2015a.   Current perspectives in drug discovery against tuberculosis from natural products. International Journal of Mycobacteriology. 4, 165–183.


Nguta, J.M., Appiah-Opong, R., Nyarko, A.K., Yeboah-Manu, D., Addo,G.A., 2015b. Medicinal plants used to treat TB in Ghana.  International Journal of Mycobacteriology 4, 116-123.


Njenga, D., Irungu, B.,   Mbaria, J., Mutai, C., Nguta, J.M., 2015.Antiplasmodial, Cytotoxic and Acute Toxicity Activities of Vernonia lasiopus O. Hoffman.  African Journal of Pharmacology and Therapeutics. 4(1), 16-20.


Mwangi, G.G., Wagacha, J.W., Nguta, J.M., James M. Mbaria, J.M., 2015.Brine shrimp cytotoxicity and antimalarial activity of plants traditionally used in treatment of malaria in Msambweni district. Pharmaceutical Biology. 53 (4), 588-593.


Micheni N. Kiraithe , Joseph M. Nguta  , James M. Mbaria , Stephen G. Kiama "Evaluation of the use of Ocimum suave Willd. (Lamiaceae), Plectranthus barbatus Andrews (Lamiaceae) and Zanthoxylum chalybeum Engl. (Rutaceae) as antimalarial remedies in Kenyan folk medicine. Read More ....

Kamanja I.TKiama SGJM Mbaria ,Gathumbi P.K, Mbaabu  M, Lanyasunya A, Gakuya D.W, John D  " Medicinal plant used in the Management of Sexually Transmitted Infection by the Samburu Community , Kenya". read more International Journal of Pharmaceutical Research /April -June 2015/Vol 7 Issue 2

Tchokonte-Nana V. , Kimani Njoki C. (2015). The centroacinar cell theory: A potential source for islet cells in injured adult pancreas. Submitted.

Kimani C.N., Mbaria J.M., Suleiman M., Gakuya D.W , Kiama S.G. Antihyperglycemic activity of Zanthoxylum chalybeum stem bark extract in diabetic rats. The Journal of Phytopharmacology, Volume 4 Issue 3, 2015. read more ..

Ganesh P, Jameela H, Michael N, Njoki K. Dimensional analysis of selected linear and curved measurements of human and baboon brains. Austin J Nurs Health Care. 2015; 2(1):1013. 

James M. Kuria  James M. Mbaria , Peter K. Gathumbi , Stephen G. Kiama "Influence of Aspilia pluriseta Schweinf (Asteraceae) on the healing of dermal excision wounds (mouse model) and skin sensitization activity (Guinea pig model) read more...

J. M. Nguta,  R. A-Oppong, A. Nyarko, D. Yeboah-Manu, G. A. Addo. Current perspectives in drugs discovery against tuberculosis from natural product.Int. J. Mycobacteriol. (2015) Read more 

J. M. Nguta,  R. A-Oppong, A. Nyarko, D. Y-Manu, P. A. Addo. Medicinal plants used to treat TB in Ghana. International Journal of Mycobacteriology (doi: 10.1016/j.ijmyco.2015.02.003). Read More

D. Njenga, Beatrice Irungu, J. Mbaria, C. Mutai J.M Nguta. Antiplasmodial, Cytotoxic and Acute Toxicity Activities of Vernonialiasiopus O Hoffman; African journal of pharmocology and Therapeutics , 4 issue 1 (2015) 16-20

G. Gicharu, John Maina, J.M Nguta , James Mbaria, Brine shrimp cytotoxicity and antimalarial activity of plants traditionally used in treatment of malaria in Msambweni district. Read More;

Magrate M. Kaigongi, Saifuddin. F. Dossaji, Joseph. M. Nguta, Catherine.W. Lukhoba, Fredrick. M. Musila. Antimicrobial Activity, Toxicity and Phytochemical Screening of Four Medicinal Plants Traditionally Used in Msambweni District, Kenya. Journal of Biology, Agriculture and Healthcare, ISSN 2224-3208 (Paper) ISSN 2225-093X (Online),Vol.4, No.28, 2014.

Douglas Ongeri Ochora, Dossaji Saifudin Fidahusein, Joseph Mwanzia Nguta, Elijah M. Akunda.  Antimalarial activity and acute toxicity of four plants traditionally used in treatment of malaria in Msambweni District of Kenya. European International Journal of Science and Technology Vol. 3 No. 7 September, 2014.

Caroline Kathambi Murithi; Dossaji Saifudin Fidahusein; Joseph Mwanzia Nguta; Catherine Wanjiru Lukhoba. Antimalarial activity and in vivo toxicity of selected medicinal plants naturalised in Kenya. International Journal of Education and Research. Vol. 2 No. 5 May 2014

Isaac Omwenga, L. Kanja, J. Nguta, J. Mbaria and P. Irungu. Assessment of lead and cadmium residues in farmed fish in Machakos and Kiambu counties, Kenya. Toxicological & Environmental Chemistry, 2014. http://dx.doi.org/10.1080/02772248.2014.911541

Joseph Mwanzia Nguta*, James Mucunu Mbaria and Winchester David Mvula. Brine shrimp toxicity and in vitro antimicrobial activity of Piliostigma thonningii (Schum.) Milne-Redh. [Leguminosae-Caesalpinioideae] from Kenya and Malawi against some pathogens of human and veterinary importance. Journal of Veterinary Medicine and Animal Health, Vol. 5(9), pp. 251-256, September, 2013. DOI 10.5897/JVMAH13.0208. © 2013 Academic Journals http://www.academicjournals.org/JVMAH

J.M. Nguta, J.M. Mbaria. Brine shrimp toxicity and antimalarial activity of some plants traditionally used in treatment of malaria in Msambweni district of Kenya. Journal of Ethnopharmacology 148 (2013) 988-992.

James M. Mbaria, Charles Ochodo and Joseph Mwanzia Nguta. Forensic case of lead poisoning from a battery manufacturing company in Nakuru, Kenya. Japanese Journal of Veterinary Research 61 (Supplement): S64-S66, 2013. 

M.F.Musila, S.F.Dossaji, J.M.Nguta, C.W.Lukhoba, J.M.Munyao. In vivo antimalarial activity, toxicity and phytochemical screening of selected antimalarial plants. Journal of ethnopharmacology 146 (2013) 557-561

J.M. Nguta, J.M. Mbaria, D.W.Gakuya, P.K.Gathumbi, J.D. Kabasa, S.G.Kiama. Cytotoxicity of antimalarial plant extracts from Kenyan biodiversity to the brine shrimp, Artemia salina L. (Artemiidae). Drugs and Therapy Studies 2012; volume 2:e12

J.M. Nguta, J.M. Mbaria, D.W.Gakuya, P.K.Gathumbi, J.D. Kabasa, S.G.Kiama. Evaluation of Acute Toxicity of Crude Plant Extracts from Kenyan Biodiversity using Brine Shrimp, Artemia salina L. (Artemiidae). The Open Conference Proceedings Journal, 2012, 3, 30-34

J.M. Nguta, J.M. Mbaria. Bioavailability of Cobalt, Zinc and Selenium and Anthelmintic effects of fortified and non-fortified albendazole in sheep. Kenya Veterinarian 35 Issue 1(2011). Pp 9-17

Gakuya DW, Mbaria JM, Kiama SG, Gathumbi PK, Mathiu M, Nguta JM. Ethnoveterinary Medicine: The Prospects of Integrating Medicinal Plant Products in Veterinary Medicine in Kenya.  Kenya Veterinarian 35 Issue 2 (2011). Pp. 67-76

J M Kuria, J. M. Mbaria, P. K. Gathumbi,S. G. Kiama. "Efficacy of aspilia pluriseta schweinf in cutaneous wound healing in a mouse model". 2014. Read More ...

Z M. Rukenya, J M. Mbaria, P M. Mathiu,S G. Kiama."Phytochemical Screening, Antimicrobial Activity and Acute Toxicity of Aloe Turkanensis" 2014. Read more..

Kamanja I.T, Kiama SG, , PK Gathumbi, JM Mbaria, M.mbaabu "Study Of Antimicrobial, Phytochemical And Toxicological Properties Of Selected Plants Used In The Management Of Sexually Transmitted Infections In Samburu County, Kenya 2014. In press..

D.W. Gakuya, P.N. Mbugua, B. Kavoi and S.G. Kiama "Effect of Supplementation of Moringa oleifera Leaf Meal in Broiler Chicken Feed. International Journal of Poultry Science 13 (4): 208-213, 2014,ISSN 1682-8356 © Asian Network for Scientific Information, 2014. Read More....

R.O. Onzago*, S.G. Kiama, J.M. Mbaria, D.W Gakuya, J.G.Nduhiu,"Evaluation of antimicrobial activity and toxicity of Vernonia hymenolepis (A. Rich) traditionally used for toothache in Kenya. The Journal of Phytopharmacology 2014; 3(1): 22-28    "Read More..

R.O. Onzago*, S.G. Kiama, J.M. Mbaria, D.W Gakuya, C.G. Githiji, Z.M. Rukenya "Analgesic activity of aqueous extract of Vernonia hymenolepis (A. Rich) a traditional medicine plant used in Kenya for toothache" 2014; 2(6): 41-45. Read More...

Kaingu C.K, Kiama SG, , JA Oduma, JM Mbaria , "Ethnobotanical study of medicinal plants used in Tana River for management of illnesses".Asian journal of Complementary and Alternative Medicine 02(02); 2014. Read More ...

Johnson Nasimolo, Stephen G. Kiama, peter Karuri Gathumbi, Andrew Ndegwa Makanya, John Maina Kagira (2014) Erythrina abyssinica prevents meningoencephalitis in chronic Trypanosoma brucei brucei mouse model. Read More..

Maina, E. N., Kinyi, H. W., Ochwang’i, D. O., & Meroka, A. M. (2014). Liver toxicity of Crude extract of Ficus natalensis traditionally used in South Western Uganda, African Journal of Pharmacology and Therapeutics 3(4), 116–121. Read more...

Dominic O. Ochwang’i , Charles N. Kimwele , Jemimah A. Oduma ,Stephen G. Kiama , Peter K. Gathumbi  ,James M. Mbaria  (2013) Medicinal plants used in treatment and management of cancer in Kakamega County, Kenya. Journal of Ethnopharmacology. Read more

kaingu C.K, DC, Mbaria PJM, Oduma DJA, Kiama PSG. Submitted. Ethnobotanical survey of medicinal plants used for the management of male sexual dysfunctionand infertility in Tana River County, Kenya. Read More...

Kaingu C.K, Kiama SG, , JA Oduma, JM Mbaria (2013). Medicinal plants traditionally used for the management of female reproductive health dysfunction in Tana River County, Kenya. Tang international Journal of Genuine Traditional Medicine Volume 3 / Issue 2, 35-44. Read More

Ochwang’i, Dominic; Kimwele, Charles; Kiama, S G; Rice, Nancy Rice (2013). Transcriptional regulation of Rat Endothelial Nitric Oxide Promoter in Pulmonary Myofibroblasts cells and its implications in Pulmonary Fibrosis. African Journal of Pharmacology and Therapeutics Vol. 2 No. 1 Pages 1-8, 2013. Read More

Kavoi BM, Makanya AN, Plendl J, Kiama SG. (2012). Morphofunctional Adaptations of the Olfactory Mucosa in Postnatally Developing Rabbits. Anatomical Records 295(8):1352-63. Read More

Seifert AWKiama SGSeifert MGGoheen JRPalmer TMMaden M; 2012. Skin shedding and tissue regeneration in African spiny mice (Acomys); 2012. Nature,      Sep 27;489(7417):561-5. doi: 10.1038/nature11499. Read more

Wambugu SN, Mathiu PM, Gakuya DW, Kanui TI, Kabasa JD, Kiama SG. (2011) Medicinal plants used in the treatment of joint pains in Machakos and Makueni counties, Kenya. Journal of Ethnopharmacology 137: 945-955. Read more.

Nguta JM, Mbaria JM, Gathumbi PK, Gakuya D, Kabasa JD, Kiama SG. (2011). Ethnodiagnostic skills of the Digo community for malaria: A lead to traditional bioprospecting. Frontiers in Pharmacology 2: 1-14.Read more

Ogeng'o JA, Malek AA, Kiama SG. (2010). Structural organization of the tunica intima in the aorta of the goat. Folia Morphologica 69: 164-169.Read more.

Nguta JM, Mbaria JM, Gakuya DW, Gathumbi PK, Kiama SG.(2010) Traditional antimalarial phytotherapy remedies used by the South coast community, Kenya.  Journal of Ethnopharmacology 131: 256-67.Read more

Nguta JM, Mbaria JM, Gakuya DW, Gathumbi PK, Kiama SG. (2010). Antimalarial Herbal remedies of Msambweni, Kenya. Journal of Ethnopharmacology 128: 424-432.Read more.

Kavoi B, Makanya A, Hassanali J, Carlsson HE, Kiama S.. (2010). Comparative functional structure of the olfactory mucosa in the domestic dog and the sheep. Annals of Anatomy 192: 329-337..Read more.

Maina JN, West JB, Orgeig S, Foot NJ, Daniels CB, Kiama SG, Gehr P, Mühlfeld C, Blank F, Müller L, Lehmann A, Brandenberger C, Rothen-Rutishauser B. (2010) Recent advances into understanding some aspects of the structure and function of the mammalian and avian lungs. Physiological and Biochemical Zoology 83: 792-807..Read more

Ogeng'o JA, Malek AK, Kiama SG. (2010) Regional differences in aorta of goat (capra hircus). Folia Morphologica 69: 253-257.Read more.

Wambugu SN, Towett PK, Kiama SG, Abelson KS, Kanui TI. (2010). Effects of Opiods in the formalin test in the Speke’s-hinged tortoise (Kinixys spekii). Journal of Veterinary Pharmacology and Therapeutics 33: 347-51.Read more.

Nguta JMMbaria JMGakuya DWGathumbi PKKiama SG; 2010. Traditional antimalarial phytotherapy remedies used by the South Coast community, Kenya.J  Ethnopharmacol. 2010 Sep 15;131(2):256-67. Epub 2010 Jun 30. Read more

Nguta JMMbaria JMGakuya DWGathumbi PKKiama SG;2010. Antimalarial herbal remedies of Msambweni, Kenya.J Ethnopharmacol. 2010 Mar 24;128(2):424-  32. Epub 2010 Jan 22. Read more

Gakuya D. W, Mbaria J. M., Kiama S. G., Gathumbi P. K., Mathiu M., Nguta J. M., (2011). Ethnoveterinary Medicine: The prospects of Integrating Medicinal Plants products in Veterinary Medicine in Kenya. The Kenya Veterinarian 35 (2) 67-76.Read more

Kaingu CKOduma JAKanui TI;2011. Practices of traditional birth attendants in Machakos District, Kenya.J Ethnopharmacol. 2011 Sep 1;137(1):495-502. Epub  2011 Jun 6. Read more

Kaluwa Kaingu COduma JAKanui T;2012.Preliminary investigation of contractile activity of Ricinus communis and Euclea divinorum extracts on isolated rabbit  uterine strips. J Ethnopharmacol. 2012 Jul 13;142(2):496-502. Epub 2012 May 28.Read more

Nguta J.M *, J.M.Mbaria, D.W.Gakuya, P.K.Gathumbi, J.D.Kabasa, S.G.Kiama;2011. Biological screening of Kenyan medicinal plants using artemia  salina (ARTEMIIDAE).Read more


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News and events

  • Rise Afnnet Conference on 15th - 18th June 2016 at Mash park Hotel Nairobi
  • RISE Competitive Fund for Graduates : Phase II
    Call for Concept proposals for the new Competitive Fund for RISE PhD Graduates. Deadline for Application is 17th December ,2015.
  • 15th October 2015.

  • Dr. Joseph Nguta uncovers antituberculosis plants, he talks about his research  into the antituberculosis properties of varous plants traditionally used in Ghana.Read More ....

  • Carnegie Fund for Conference Attendance (CFCA) Partners,

  • Call for Application

    2nd call for applications to the Carnegie Fund for Conference Attendance (CFCA).  Applications with a deadline to submit materials to IIE by October 30, 2015We have an updated FAQ sheet, application form, recommendation forms (I & II), and budget form (SEE LATEST NEWS); 

  • Dr. Irene Kamanja graduated on 29th August 2014 with PhD in Pharmocology and Toxicology  and Dr. Ronald O.Onzago and Dr. Zachary M. Rukenya Graduated on the same day with Msc in Natural Products and Bioprospecting.
  • Dr. Ronald O.Onzago and Dr. Zachary M. Rukenya  attended 48th Annual Scientific Conference on 23rd to 26th April 2014 at Boma Inn Hotel , Eldoret. The them of the conference is "Improving Veterinary Governance and Service Delivery in a Devolved system for Sustainable Development".
  • Andrea Johnson, Program officer on higher Education in Africa at Carnegie Foundation of New York visited UON node on 2nd April 2014 and held a three hour session with the RISEAFNNET students
  • Dr.Zachary  Rukenya Rise Afnnet fellow presented his paper on 'Current challanges and approaches to managment of antimicrobial drug resistance  at scientific veterinary symposium at Kampala Uganda on 13th December 2013.Read More.....
  • Dr.Johnson Nasimolo & Ms. Clare Njoki Rise Afnnet Fellows graduate in a colour ceremony at University of Nairobi on 6th December 2013.
  • Dr.Catherine Kaluwa, Dr. Dominic Ochwangi, Dr. James Kuria and Ms. Karambu Muriithi  attended the15th Symposium of the Natural Products Chemistry Research Network for Eastern and Central Africa (NAPRECA) from 3rd  -10th December, 2013  at Khartom Sudan.
  • RISE Annual Meeting was held in  Aloe Ridge Hotel Johannesburg, South Africa October 25-26, 2013.
  • Dr.Johnson Nasimolo attended the 1st OHCEA One Health Conference  on 23rd -26th September 2013, held in Hilton Hotel in Addis Ababa,Ethiopia. Read More
  • Dr.Catherine Kaluwa and Dr.Johnson Nasimolo attended the 19th International Scientific Conference  on Basic and Clinical Research for inproved Health on 11th-13th 2013 in Southern Sun,Mayfair,Nairobi,Kenya.

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  • Ms.Karambu Mureithi, a Rise Afnnet Fellow graduates with MSc. from University of Nairobi.

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  • Ms. Karambu Muriithi, RISE-AFNNET fellow presented her research paper at Indigenous Plant Forum 2013 Conference

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  • RISE AFNNET PostDoc Fellow, Dr. Joseph Nguta attends the 2nd International Conference on Pathogens at the Human-Animal Interphase, Brazil

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  • Dr. Johnson Nasimolo, RISE-AFNNET fellow at the 11th SONA International Conference  in Rabat Morocco.

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  • Dr Zachary Rukenya and Dr Ronald Okindo, RISE-AFNNET fellows attended and presented papers

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  • The RISE AFNNET Workshop Nairobi Node was successfully held at KCB Karen on 26th and 27th October 2012.

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