Abstract:
:Present report demonstrates that repeated radiation of Schistosoma mansoni-infected Biomphalaria glabrata, totaling 15,000 rads, caused a sudden, albeit transient, suppression of cercarial shedding. Initially, sporocysts practically disappeared from the snail tissues. The more resistant developing cercariae presented nuclear clumping and vacuolation, before undergoing lysis. No host tissue reaction was evident at any time. Thirty-four days after the last irradiation, the snails resumed cercarial elimination. By that time numerous sporocysts and developing cercariae were detected, disseminated throughout snail tissues in a pattern similar to that of a highly malignant neoplasm, with no signs of host cellular reactions, which on the other hand were present in non-irradiated infected controls. The region of the ovo-testis was apparently destroyed after radiation, but returned to its normal appearance around 40 days after the last radiation. Ionizing radiation affected both host and parasite in S. mansoni-infected Biomphalaria glabrata, but the resulting impressive changes were soon reversed.
journal_name
Rev Soc Bras Med Tropjournal_title
Revista da Sociedade Brasileira de Medicina Tropicalauthors
Azevedo CM,Borges CC,Andrade ZAdoi
10.1590/s0037-86822004000300005subject
Has Abstractpub_date
2004-05-01 00:00:00pages
218-21issue
3eissn
0037-8682issn
1678-9849journal_volume
37pub_type
杂志文章abstract::The authors report a case of a 12-year-old child with a complaint of pain and deformity in the lower thoracic region that had lasted for two years. Clinical, epidemiological and laboratory characteristics associated with images of apparent damage in the T9-T10 and T11-T12 vertebrae taken by radiography of the thoracic...
journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/0037-8682-0010-2012
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abstract:INTRODUCTION:Triatomines are targeted for the control of Chagas disease in endemic areas of Brazil. METHODS:Data regarding triatomines captured during 2001-2008 in 34 municipalities in the Northeast of Minas Gerais were analyzed. RESULTS:In total, 11,187 triatomines from eight species were captured, mostly in henhous...
journal_title:Revista da Sociedade Brasileira de Medicina Tropical
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/s0037-86822004000600002
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abstract:INTRODUCTION:Cryptococcosis is the second most frequent cause of opportunistic infections in human immunodeficiency virus (HIV) patients in Colombia. We aimed to determine the prevalence of cryptococcosis in the Colombian department of Atlántico. METHODS:An active search for cryptococcosis cases was conducted between ...
journal_title:Revista da Sociedade Brasileira de Medicina Tropical
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
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doi:10.1590/s0037-86822000000200003
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
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doi:10.1590/0037-8682-0110-2013
更新日期:2013-07-01 00:00:00
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
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更新日期:2017-03-01 00:00:00
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/s0037-86822008000600021
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章,评审
doi:10.1590/s0037-86822000000300010
更新日期:2000-05-01 00:00:00
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/s0037-86821995000400003
更新日期:1995-10-01 00:00:00
abstract::A case of primary amoebic meningoencephalitis produced by Naegleria fowleri was diagnosed in the Independencia county of Anzoategui State, Venezuela. This case motivated the realization of the present epidemiological study with the aim of identifying free-living amoebae in this area. Representative water samples were ...
journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/s0037-86822006000300007
更新日期:2006-05-01 00:00:00
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/0037-8682-0345-2020
更新日期:2020-01-01 00:00:00
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/s0037-86822010000100003
更新日期:2010-01-01 00:00:00
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/s0037-86822011000100004
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journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/s0037-86821999000100004
更新日期:1999-01-01 00:00:00
abstract::Aeromonas spp is recognized as pathogenic to humans after consumption of contaminated water and food. In the present investigation, 2,323 rectal swab samples from newborns hospitalized in Rio de Janeiro were evaluated with a view to isolating Aeromonas. The samples were collected and sent to the national reference lab...
journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/s0037-86822008000200009
更新日期:2008-03-01 00:00:00
abstract:INTRODUCTION:Chikungunya (CHIK) is caused by the Chikungunya virus, which is an Alphavirus of the Family Togaviridae transmitted to humans through female mosquitoes of the genus Aedes. METHODS:A cross-sectional study was conducted involving the administration of a questionnaire addressing sociodemographic and health v...
journal_title:Revista da Sociedade Brasileira de Medicina Tropical
pub_type: 杂志文章
doi:10.1590/0037-8682-0112-2019
更新日期:2019-11-14 00:00:00