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Isolation of cryptococcus neoformans from environmental samples collected in Southeastern Nigeria / Isolamento de Cryptococcus neoformans de amostras ambientais coletadas no sudeste da Nigéria
Nweze, Emeka I; Kechia, Fred A; Dibua, Uju E; Eze, Charles; Onoja, Uwakwe S.
  • Nweze, Emeka I; University of Nigeria. Department of Microbiology. Nsukka. NG
  • Kechia, Fred A; University of Nigeria. Department of Microbiology. Nsukka. NG
  • Dibua, Uju E; University of Nigeria. Department of Microbiology. Nsukka. NG
  • Eze, Charles; University of Nigeria. Department of Microbiology. Nsukka. NG
  • Onoja, Uwakwe S; University of Nigeria. Department of Microbiology. Nsukka. NG
Rev. Inst. Med. Trop. Säo Paulo ; 57(4): 295-298, July-Aug. 2015. tab, ilus
Article in English | LILACS | ID: lil-761167
ABSTRACT
SUMMARYCryptococcosis caused by Cryptococcus neoformansis the second most common fungal opportunistic pathogen and a lifethreatening infection with serious clinical manifestations especially in HIV/AIDS and other immunocompromised patients. In Nigeria, HIV/AIDS infection has reached an alarming level. Despite this, information on the presence of this fungus in clinical and environmental samples is very scanty in Nigeria and many other parts of Africa. We set out to evaluate the presence of Cryptococcus neoformansor C. gattiiin pigeon droppings obtained from Southeastern Nigeria. One hundred and seventy-seven samples of pigeon droppings from six sample types were collected. The area covered comprised of ten cities and other locations spanning across five States in Nigeria. Using established techniques, Cryptococcus neoformanswas isolated from 39 of the 177 (22.0%) samples overall. No C. gattiiwas isolated. Most of the isolates (32.4%) were recovered from dovecotes (11 of 34) followed closely by samples taken from markets (31.8%; seven of 22) and least from the church (4.0%; one of 25). The highest isolation rate (38.9%) was found in samples from Enugu-Ezike(seven of 23) while the least came from Afikpoand the other locations each with 9.1% isolation rate. This is the first large-scale screening of Cryptococcus neoformansfrom pigeon droppings in Nigeria. The ecological and epidemiological significance of these findings are discussed.
RESUMO
RESUMOA criptococose, causada por Cryptococcus neoformans, é o segundo patógeno fúngico oportunista mais comum em infecções com risco de vida e manifestações clínicas graves, especialmente em HIV/AIDS e outros pacientes imunocomprometidos. Na Nigéria, a infecção pelo HIV/AIDS atingiu um nível alarmante. Apesar disso, informações sobre a presença desses fungos em amostras clínicas e ambientais é muito escassa na Nigéria e em muitas outras partes da África. Propusemo-nos a avaliar a presença de Cryptococcus neoformansou C. gattiiem fezes de pombos obtidos do sudeste da Nigéria. Foram coletadas 177 amostras de fezes de pombos de seis localidades. A área coberta foi composta por dez cidades e outras localidades abrangendo cinco Estados na Nigéria. Usando técnicas estabelecidas, Cryptococcus neoformansfoi isolado de 39 do total de 177 (22,0%) amostras. Nenhuma amostra de C. gattiifoi isolada. A maioria dos isolados (32,4%) foi recuperada de pombais (11 de 34), seguido de perto por amostras colhidas em mercados (31,8%; 7 de 22) e por último na igreja (4,0%; 1 de 25). A maior taxa de isolamento (38,9%) foi encontrada em amostras de Enugu-Ezike (7 de 23), enquanto a menor taxa foi de Afikpo e os outros locais, cada um deles com taxa de isolamento de 9,1%. Esta é a primeira triagem em larga escala de Cryptococcus neoformansem fezes de pombos na Nigéria. A importância ecológica e epidemiológica destes achados é discutida.
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Full text: Available Index: LILACS (Americas) Main subject: Columbidae / Cryptococcus neoformans / Environmental Microbiology / Feces Limits: Animals Country/Region as subject: Africa Language: English Journal: Rev. Inst. Med. Trop. Säo Paulo Journal subject: Tropical Medicine Year: 2015 Type: Article Affiliation country: Nigeria Institution/Affiliation country: University of Nigeria/NG

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Full text: Available Index: LILACS (Americas) Main subject: Columbidae / Cryptococcus neoformans / Environmental Microbiology / Feces Limits: Animals Country/Region as subject: Africa Language: English Journal: Rev. Inst. Med. Trop. Säo Paulo Journal subject: Tropical Medicine Year: 2015 Type: Article Affiliation country: Nigeria Institution/Affiliation country: University of Nigeria/NG