Abstract：
:Breast cancer is first in incidence and mortality among Costa Rican women. In 2011 there is a projected 1 071 new cases. We selected 116 patients diagnosed with breast cancer and family history of breast cancer. A detailed family history and epidemiology data was obtained from each patient and a blood sample was processed for DNA extraction. We analyzed the prevalence of risk factors and BRCA1 and BRCA2 mutations. These mutations were detected by different techniques and were confirmed by direct sequencing. Six patients (5.2%) had a mutation, five of which were in the BRCA2 gene and only one in BRCA1. We found that the average age of women who carry a mutation is lower than in non-carrier women. All other risk factors analyzed were not different among carrier and non-carrier women. In addition, these results and the increased incidence of breast cancer in recent years in Costa Rica, should promote an increase in prevention policies and the establishment of efficient detection methods that allow early disease diagnosis.
journal_name
Rev Biol Tropjournal_title
Revista de biologia tropicalauthors
García-Jiménez L,Gutiérrez-Espeleta G,Narod SAsubject
Has Abstractpub_date
2012-12-01 00:00:00pages
1663-8issue
4eissn
0034-7744issn
2215-2075journal_volume
60pub_type
杂志文章abstract：:The queen conch Eustrombus gigas is an important fisheries resource in the Caribbean region. In Cuba Island the studies about this resource are very scarce and particularly in the Southeastern regions of the country. With the aim to get important fishery information about this gastropod, adult Queen Conch density and ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v61i2.11165
更新日期：2013-06-01 00:00:00
abstract：:This study is based on a subset of plankton samples obtained during an expedition of the German RV Victor Hensen to the Pacific coast of Costa Rica in 1993/94. It aims at the identification of the main plankton taxa for a general description and comparison of the plankton communities of the gulf systems Golfo de Nicoy...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1996-12-01 00:00:00
abstract：:Lichens are increasingly used worldwide as air quality biomonitors because they are efficient, easy and cheap, but validation studies of the methodology are scarce. Three foliose lichen biomonitoring methods were compared by field tests (in the tropical urban habitat of San José, Costa Rica) and laboratory simulations...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2002-03-01 00:00:00
abstract：:Seed dispersal is a fundamental process in plant ecology and is of critical importance for the restoration of tropical communities. The lands of the Cabo Rojo National Wildlife Refuge (CRNWR), formerly under agriculture, were abandoned in the 1970s and colonized mainly by non-native tree species of degraded pastures. ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2014-09-01 00:00:00
abstract：:Biomarkers are a widely applied approach in environmental studies. Analyses of cholinesterase (ChE), glutathione S-transferase (GST) and lipid peroxidation (LPO) are biomarkers that can provide information regarding early effects of pollutants at different biochemical levels on an organism. The aim of this study was t...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v60i1.2769
更新日期：2012-03-01 00:00:00
abstract：:The spawning of the muricid gastropod Plicopurpura pansa in the laboratory at 22-23 degrees C is described. Females deposited 1-20 capsules daily for at least 20 weeks, and produced up to 150 capsules each per spawning season. During spawning, egg clusters were formed consisting of hundreds of capsules of different ag...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v52i1.14702
更新日期：2004-03-01 00:00:00
abstract：:Raptorial birds harbor a variety of ectoparasites and the mayority of them are host specific. The aim of this study was to identify the ectoparasites of captive birds of prey from Mexico, as well as to verify their impact in the health of infested birds. Raptorial birds were confiscated and kept in captivity at the Ce...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2011-09-01 00:00:00
abstract：:The local effects induced as a consequence of applications of four external secretions from the spider Sphaerobothria hoffmanni were recorded. Macroscopic lesions were not found; the only local effect microscopically observed was a weak necrosis in the skeletal muscle in mice. ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1984-11-01 00:00:00
abstract：:Rice fields occupy large areas in Northeastern Argentina, and in Corrientes this widespead activity has become a feature in the landscape, as it is one of the main producing provinces. The aquatic Coleoptera is part of the fauna inhabiting these artificial environments but little is known about this group in irrigated...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2015-09-01 00:00:00
abstract：:The host plants of Cerambycidae (Coleoptera) in the Province of Espinal (Chaquenian Dominion) and the province of Buenos Aires are mainly exotics, cultivated or naturalized, the last ones growing spontaneously and forming little forests. Forty two species of Cerambycidae are reported using these plants and other nativ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1997-03-01 00:00:00
abstract：:Actually, the germplasm of Jatropha spp. is conserved as whole plants in field collections. Under this storage method, the genetic resources are exposed to disease, pest and natural hazards such as human error, drought and weather damage. Besides, field genebanks are costly to maintain and with important requirements ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v60i1.2782
更新日期：2012-03-01 00:00:00
abstract：:The availability of data sets covering more than a year is scarce for tropical environments. Advances in hardware and software speed-up the re-analysis of old data sets and facilitates the identification of hidden data patterns. From February 1984 to April 1987 (49 sampling dates), core samples (17.7cm2, 15cm deep) we...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2011-09-01 00:00:00
abstract：:Brycon henni, is a native fish from Western Colombia is important as food and in sport fishing, and could be cultured in waters between 18 and 28 degrees C. A previous cytogenetic study in branchial cells indicated different chromosomal complements. Total blood samples were seeded in 4 ml Ham-F12 culture medium, suppl...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2008-12-01 00:00:00
abstract：:Simplification of natural habitats leads to a modification of the community associated with a host plant. Pequi trees (Caryocar brasiliense) are common to find in central Brazil, especially in the middle of monocultures, such as soy, corn, pasturelands or Eucalyptus plantations. On this scenario we hypothesized that h...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v60i3.1758
更新日期：2012-09-01 00:00:00
abstract：:The dose dependent antiproliferative effect of an alkaloidal substance extracted from the sponge Amphimedon viridis was tested on Leishmania mexicana promastigotes. Sponges were collected in Isla Larga, Venezuela (10 degrees 20' 20" - 10 degrees 24" N, 64 degrees 19' - 64 degrees 22' W), cut and dipped in methanol for...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2000-12-01 00:00:00
abstract：:Critical evaluation of terminology use in ecology is important to avoid using jargon that helps little to facilitate communication. Here we reply to Monge-Najera’s comment on the use of the terms ensemble and assemblage, we argue for the use of the words ensamble and ensamblaje in Spanish. In addition, both terms have...
journal_title：Revista de biologia tropical
pub_type： 评论,信件
doi：
更新日期：2016-06-01 00:00:00
abstract：:Sponges constitute one of the most diverse and abundant animal groups in the marine tropical benthos especially in coral reefs, though poorly studied to species level. The aim of this study is to characterize the sponge community along a depth gradient at Isla Larga (Parque Nacional San Esteban, Venezuela) fringe reef...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2010-10-01 00:00:00
abstract：:The endangered species Strombus gigas is a marine gastropod of significant economic importance through the Greater Caribbean region. In contrast to phenotypic plasticity, the role of genetics on shell variations in S. gigas has not been addressed so far, despite its importance in evolution, management and conservation...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v64i4.21468
更新日期：2016-12-01 00:00:00
abstract：:Abstract: Attacks by big cats on livestock are one of the major causes of human-felid conflicts and, therefore, an important factor in the conservation of these species. It has been argued that a reduction in natural prey abundance promotes attacks on domestic species, but few studies have tested this statement, and s...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v62i4.13199
更新日期：2014-12-01 00:00:00
abstract：:Hereditary motor and sensory neuropathy (HMSN) or Charcot-Marie-Tooth disease (CMT) is the most common hereditary illness of the peripheral nervous system. The genetics and the physiopathological aspects of the disease clarified until know, are here summarized. More than twenty genes and ten additional loci have been ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v1i2.15285
更新日期：2004-09-01 00:00:00
abstract：:Estimating feline abundance becomes particularly difficult, sometimes impossible, due to their elusive behavior and extensive space requirements. Available techniques are expensive and/or poorly efficient, therefore alternative methods are needed. The objective of this study was to assess the possibility of identifyin...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2008-12-01 00:00:00
abstract：:We analyzed the diet and feeding habits of the fishes Heterandria bimaculata and Poecilia sphenops. Specimens were captured monthly in "Los Carros" damp, Morelos, Mexico (18 degrees 37' N, 98 degrees 43' W). We quantified gut content by the numerical method and by the frequency of occurrence method; and used the MacAr...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2007-06-01 00:00:00
abstract：:Rhizosphere microbial communities are important for phytoremediation, plant nutrition, health and metabolism. Many factors, including plant species, pH and nutritional factors influence rhizosphere micro- biology. In this study, we analysed the effects of different forms of nitrogen on the structures of rhizosphere ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v64i1.18138
更新日期：2016-03-01 00:00:00
abstract：:Egg clutches of the centrolenid Hyalinobatrachium pulveratum were sampled in four lowland locations of Costa Rica. The ontogenesis of the tadpoles of this species is documented by periodical descriptions of the larval stages. Larvae of H. pulveratum change their shape during development because of the non-equal growth...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v52i1.14912
更新日期：2004-03-01 00:00:00
abstract：:Two laboratory maintenance systems of Trypanosoma rangeli were compared. The maintenance by weekly subinoculations in Tobie's culture medium and the intrafemoral inoculation of Rhodnius prolixus with cultured flagellates, resulted in loss of infectivity of the metacyclic salivarian trypomastigotes for mice, ten months...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1986-06-01 00:00:00
abstract：:The karyotypes of the purple snails Plicopurpura pansa (Gould, 1853) and P. columellaris (Lamarck, 1816) were established from 17 and 13 adults, respectively; and from eight capsules with embryos of P. pansa. In P. pansa were counted 59 mitotic fields in the adults and 127 in embryos; and 118 fields in P columellaris....
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2007-09-01 00:00:00
abstract：:A new genus and two species of Melolonthinae from Honduras and Nicaragua are described. A phylogenetic analysis, carried out using morphological characters, suggests that Catrachia is a strongly supported monophyletic group. Catrachia is therefore established as a new genus, constituted by two new species, Catrachia m...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v54i2.13910
更新日期：2006-06-01 00:00:00
abstract：:A sample of 15 Costa Rican scientific papers published since 1985 reported only 49% of the necessary information about laboratory animals and experimental conditions, slightly better than in the rest of Latin America (47%, sample = 15 papers) but lower than in the USA and Europe (60%, sample = 15). Adequate informatio...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1997-09-01 00:00:00
abstract：:Seed production, seed dispersal and recruitment are critical processes in population dynamics, because they are almost never completely successful. We recorded the recruitment dynamics for the population of Dipteryx oleifera in a tropical rainforest in eastern Nicaragua (12 degrees 05' N., 83 degrees 55' W.) from Marc...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v57i1-2.11324
更新日期：2009-03-01 00:00:00
abstract：:Tagosodes orizicolus Muir (Homoptera: Delphacidae), the endemic delphacid species of tropical America carries yeast-like symbiotes (YLS) in the abdominal fat bodies and the ovarial tissues, like other rice planthoppers of Asia. These YLS are obligate symbiotes, which are transmitted transovarially, and maintain a mutu...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v1i2.15414
更新日期：2004-09-01 00:00:00
