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34 results on '"KAPTUÉ, Lazare"'

5. Recorded Case of Hoffa's Disease without Specific Known Etiology

Author

Nanko James, Wona Jean Pierre, Zoyem Meli Patrick, William Youmbi, Ossondo Landau Marlène, Tchoukoua Serge Honoré, Stéphane Kohpé Kapseu, Tchangang Yvonne, Kuissu Siméon, Pamela Mekieje Tumchou, Foko Bebey, Mandengué Christine, Nsangou Adamou, Ndomgang Noche Christelle, Kapche Diane, and Kaptué Lazare

Subjects
Hoffa's disease, medicine.medical_specialty, business.industry, General Engineering, Etiology, medicine, business, Dermatology
Published
2019
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9. Antibacterial and Antifungal Activity of the Essential Oil Extracted by Hydro-Distillation from Artemisia annua Grown in West-Cameroon

Author

Chougouo Kengne Rosine Désirée, Kaptué Lazare, Fotsing Kwetche, Somo Moyo Roger, Kouamouo Jonas, Pierre René, and Domum Tchouanche Bibiane

Subjects
Pseudomonas aeruginosa, General Medicine, Biology, medicine.disease_cause, Antimicrobial, biology.organism_classification, Proteus mirabilis, Vibrio, Microbiology, law.invention, Shigella flexneri, Vibrio cholerae, law, medicine, Essential oil, Bacteria
Abstract

This study was carried out to assess the in vitro antimicrobial potential of the Essential Oil (EO) extracted by hydro-distillation from the variety of A. annua grown in West Cameroon. This evaluation was conducted by testing the microbial growth inhibition through agar diffusion, minimal inhibitory and minimal lethal concentrations. Tested microorganisms included bacteria isolates belonging to the following categories: Staphylococcus aureus, Escherichia coli, Salmonella Enteritidis, Shigella flexneri, Proteus mirabilis, Pseudomonas aeruginosa, Klebsiella pneumoniae and Vibrio cholerae. This activity was also tested on a dimorphic fungal species, Candida albicans. Data analysis revealed that the EO possessed an intrinsic antimicrobial activity that was potentiated by the solvent (DMSO). Inhibition zone diameters varied from 6 (Pseudomonas aeruginosa and Shigella flexneri) to 45 mm (Vibrio cholerae). It was also observed that Vibrio cholerae was susceptible to the lowest concentration of the essential oil used (0.3 mg/mL), while Pseudomonas aeruginosa was shown to tolerate the highest (80 mg/mL). Also, the minimal inhibitory and lethal concentrations were equal (MLC/MIC = 1), implying the absolute lethal property of the oil. This lethal potential on fungi, Gram-negative and Gram-positive bacteria makes of this plant an appropriate candidate for new conventional antimicrobial drug production and infectious disease prevention. Well exploited, it might be used to control the current epidemics of Vibrio cholerae-associated cholera in Cameroon. Additional studies should also be conducted to lay down reliable basis for comprehensive test interpretations that take into account correlations between these in vitro test results and the ones that would be obtained with conventional antimicrobials.

Published
2013
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12. Confirmation of Putative HIV-1 Group P in Cameroon

Author

Vallari, Ana, primary, Holzmayer, Vera, additional, Harris, Barbara, additional, Yamaguchi, Julie, additional, Ngansop, Charlotte, additional, Makamche, Florence, additional, Mbanya, Dora, additional, Kaptué, Lazare, additional, Ndembi, Nicaise, additional, Gürtler, Lutz, additional, Devare, Sushil, additional, and Brennan, Catherine A., additional

Published
2011
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15. The Prevalence of Diverse HIV-1 Strains Was Stable in Cameroonian Blood Donors From 1996 to 2004

Author

Brennan, Catherine A, primary, Bodelle, Pierre, additional, Coffey, Ruthie, additional, Devare, Sushil G, additional, Golden, Alan, additional, Hackett, John, additional, Harris, Barbara, additional, Holzmayer, Vera, additional, Luk, Ka-Cheung, additional, Schochetman, Gerald, additional, Swanson, Priscilla, additional, Yamaguchi, Julie, additional, Vallari, Ana, additional, Ndembi, Nicaise, additional, Ngansop, Charlotte, additional, Makamche, Florence, additional, Mbanya, Dora, additional, Gürtler, Lutz G, additional, Zekeng, Leopold, additional, and Kaptué, Lazare, additional

Published
2008
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17. HIV Type 2 Intergroup Recombinant Identified in Cameroon

Author

Yamaguchi, Julie, primary, Vallari, Ana, additional, Ndembi, Nicaise, additional, Coffey, Ruthie, additional, Ngansop, Charlotte, additional, Mbanya, Dora, additional, Kaptué, Lazare, additional, Gürtler, Lutz G., additional, Devare, Sushil G., additional, and Brennan, Catherine A., additional

Published
2008
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18. Near Full-Length Genome Characterization of Three Additional HIV Type 1 CRF13_cpx Strains from Cameroon

Author

Luk, Ka-Cheung, primary, Holzmayer, Vera, additional, Yamaguchi, Julie, additional, Swanson, Priscilla, additional, Brennan, Catherine A., additional, Ngansop, Charlotte, additional, Mbanya, Dora, additional, Gayum, Hermine, additional, Djuidje, Marcelline Ngounoue, additional, Ndembi, Nicaise, additional, Kamdem, Donatien, additional, Kaptué, Lazare, additional, Gürtler, Lutz, additional, Devare, Sushil G., additional, and Hackett, John, additional

Published
2007
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19. Identification of HIV Type 1 Group N Infections in a Husband and Wife in Cameroon: Viral Genome Sequences Provide Evidence for Horizontal Transmission

Author

Yamaguchi, Julie, primary, Coffey, Ruthie, additional, Vallari, Ana, additional, Ngansop, Charlotte, additional, Mbanya, Dora, additional, Ndembi, Nicaise, additional, Kaptué, Lazare, additional, Gürtler, Lutz G., additional, Bodelle, Pierre, additional, Schochetman, Gerald, additional, Devare, Sushil G., additional, and Brennan, Catherine A., additional

Published
2006
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21. Performance of the Celera Diagnostics ViroSeq HIV-1 Genotyping System for Sequence-Based Analysis of Diverse Human Immunodeficiency Virus Type 1 Strains

Author

Eshleman, Susan H., primary, Hackett, John, additional, Swanson, Priscilla, additional, Cunningham, Shawn P., additional, Drews, Birgit, additional, Brennan, Catherine, additional, Devare, Sushil G., additional, Zekeng, Léopold, additional, Kaptué, Lazare, additional, and Marlowe, Natalia, additional

Published
2004
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26. Natural Infection of Wild-Born Mandrills (Mandrillus sphinx) with Two Different Types of Simian Immunodeficiency Virus

Author

Takehisa, Jun, primary, Harada, Yosuke, additional, Ndembi, Nicaise, additional, Mboudjeka, Innocent, additional, Taniguchi, Yuko, additional, Ngansop, Charlotte, additional, Kuate, Seraphin, additional, Zekeng, Léopold, additional, Ibuki, Kentaro, additional, Shimada, Toshihide, additional, Bikandou, Blaise, additional, Yamaguchi-Kabata, Yumi, additional, Miura, Tomoyuki, additional, Ikeda, Mikio, additional, Ichimura, Hiroshi, additional, Kaptué, Lazare, additional, and Hayami, Masanori, additional

Published
2001
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29. Various Types of HIV Mixed Infections in Cameroon

Author

Takehisa, Jun, primary, Zekeng, Léopold, additional, Ido, Eiji, additional, Mboudjeka, Innocent, additional, Moriyama, Hiroyuki, additional, Miura, Tomoyuki, additional, Yamashita, Masahiro, additional, Gürtler, Lutz G., additional, Hayami, Masanori, additional, and Kaptué, Lazare, additional

Published
1998
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30. Trends of AIDS Epidemic in Cameroon, 1986 Through 1995

Author

Kéou, François-Xavier Mbopi, primary, Mpoudi-Ngollé, Eitel, additional, Nkengasong, John, additional, Zekeng, Léopold, additional, Mbanya, Dora, additional, Affana, Gislaine, additional, Mauclère, Philippe, additional, Lobé, Marcel Monny, additional, Tapko, Jean-Baptiste, additional, Ndumbe, Peter, additional, Salla, Roger, additional, Kaptué, Lazare, additional, and Bélec, Laurent, additional

Published
1998
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32. MOLECULAR ANALYSES OF HIV-1 GROUP O AND HIV-2 VARIANTS FROM AFRICA.

Author

HUNT, Jeffrey C., BRENNAN, Catherine A., GOLDEN, Alan M., YAMAGUCHI, Julie, LUND, Jennifer K., VALLARI, Ana S., HICKMAN, Robert K., ZEKENG, Leopold, GÜRTLER, Lutz G., HAMPL, Hartmut, KAPTUÉ, Lazare, and DEVARE, Sushil G.

Subjects
HIV, NUCLEOTIDE sequence, SEROLOGY, RNA, VIRAL envelopes
Abstract

Genetic variation among HIV isolates creates challenges for their detection by serologic and genetic techniques. To characterize the sequence variation and its correlation to serologic diversity of HIV-1 Group O and HIV-2 isolates, samples were identified by differential reactivity in selected commercial and research assays. Analysis of sera from Equatorial Guinea (EG) led to identification of 4 HIV-1 Group O variants. Viral RNA, extracted from these samples was used to PCR amplify overlapping sequences of the entire envelope gene using multiple primer pairs. Sequence analysis indicated that the V3 loop nucleotide and protein sequences aligned more closely with HIVANT70 compared to other Group O sequences. The amino acid sequences at the octameric tip of the V3 loop were RIGPLAWY, RIGPMAWY, or GLGPLAVY. The tetrameric tip GPLA is represented only once in the published 1994 HIV database (Los Alamos) but was present in 2 of 4 of EG samples. The immuno-dominant region (IDR) sequences derived from EG sera were unique in that none of the sequences were completely homologous to other HIV-1 group O variants. Further, the HIV-1 group O sequence variation could be correlated with differential serologic reactivity using IDR peptides. Compared to HIV-1, the sequence information on HIV-2 isolates is relatively limited, though the HIV-2 isolates also show genetic variation similar to HIV-I. To further establish a correlation between the genetic diversity and serologic detection of HIV-2, plasma samples from Western Africa were evaluated. Eight samples were selected based on weak serologic reactivity to env proteins. PCR amplification and sequence analysis of the gag;, env V3 loop, and env IDR regions indicated that the samples could be classified as subtypes A (4 samples), B (3 samples) and D (1 sample). Across the subtypes, there was conservation in the IDR region of the sequence WGCAFRQVCHT. This region is absolutely conserved among the majority of currently known HIV-2 and related SIV viruses (1994 HIV database). One subtype B sample had a unique sequence immediately adjacent to the IDR, however, this did not change the serologic detection using a HIV-2 IDR specific monoclonal antibody. [ABSTRACT FROM AUTHOR]

Published
1997

33. African origin of GB virus C/hepatitis G virus

Author

Tanaka, Yasuhito, Mizokami, Masashi, Orito, Etsuro, Ohba, Ken-ichi, Kato, Takanobu, Kondo, Yutaka, Mboudjeka, Innocent, Zekeng, Leopold, Kaptue, Lazare, Bikandou, Blaise, M'Pele, Pierre, Takehisa, Jun, Hayami, Masanori, Suzuki, Yoshiyuki, and Gojobori, Takashi

Published
1998
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34. HIV type 1 group M subtype G in Cameroon: five genome sequences.

Author

Yamaguchi J, Ndembi N, Ngansop C, Mbanya D, Kaptué L, Gürtler LG, Devare SG, and Brennan CA

Subjects
Blood Donors, Cameroon epidemiology, DNA, Viral analysis, HIV Infections epidemiology, HIV-1 genetics, HIV-1 isolation & purification, Humans, Molecular Sequence Data, Phylogeny, Recombination, Genetic, Sequence Analysis, DNA, Genome, Viral, HIV Infections virology, HIV-1 classification
Abstract

Near full-length viral genome sequences were obtained for five putative subtype G candidates identified in HIV-infected Cameroonian blood donors, based on partial genome sequences for the gag, pol, and env regions. Phylogenetic analysis of the genome sequences shows that all five strains are pure subtype G with no indication of intersubtype recombination. The Cameroon subtype G sequences did not form a geographically based subcluster and were intermixed within the subtype G branch with isolates from several different countries. HIV-1 group M subtype G accounts for only 4.5% of HIV infections in Cameroon. However, genome segments of subtype G are present in 67% of all infections and 80% of infections due to intersubtype recombinant strains in Cameroon. The addition of five subtype G genome sequences to the HIV database may contribute to a better understanding of the origins and classification of HIV-1 subtypes and CRFs.

Published
2009
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