Administración del agua en América Latina y el Caribe en el umbral del siglo XXI

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Reglas macrofiscales, sostenibilidad y procedimientos presupuestarios: documentos presentados en el XV Seminario Regional de Política Fiscal

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Migración y desarrollo en América del Norte y Centroamérica: una visión sintética

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Los derechos concedidos: crisis económica mundial y migración internacional

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Desarrollo económico local y competitividad territorial en América Latina

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Solicitud del Gobierno de Japón para incorporarse como miembro de la CEPAL

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Istmo centroamericano: evolución del proceso de integración regional, 2000-2001

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Cooperación ambiental en el TLCAN y perspectivas para el TLCCA-EEUU

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La reforma laboral y la participación privada en los puertos del sector público = Labour reform and private participation in public-sector ports

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Espacios de cooperación en las Américas: mayores oportunidades para un desarrollo con equidad

Prologo de Alicia Barcena

Espacios de diálogo y cooperación productiva: el rol de las PYMES

Prólogo de Alicia Bárcena y Jorge Valdez

Influence of lineage of oocyte donor on the yield and morphology of oocytes recovered by ultrasound-guided follicular aspiration in nellore cows

The objective of this study was to investigate the influence of lineage of oocytes donors on the number and quality of oocytes obtained through ultrasound-guided follicular aspiration in Nellore breed cows derived from two lineages of bulls (Karvadi; K and Taj-Mahal; T). Both maternal (Km and Tm) and paternal (Kp and Tp) lineages, as well as their combinations were investigated. Oocyte aspirations were repeatedly performed with an aspiration interval of 15 days in 56 donor females. Recovered cumulus oocyte-complexes (COCs) were counted, morphologically examined and classified into seven categories (grades from I to VII) according to the number of layers of the cumulus oocyte and cytoplasm appearance. The mean number of oocytes retrieved from donors of lineage Tp-Tm was significantly higher (28.23±1.92, P<0.05) than those obtained from lineages Kp-Tm, Kp-Km, and Tp-Km (21.34±1.32, 21.28±1.73, and 16.72±1.31, respectively). There was no significant difference in the mean number of recovered oocytes between donors of lineages Kp-Km and Kp-Tm, whereas animals of lineage Tp-Km yielded the lowest number of oocytes. Higher mean number of grade III oocytes was recovered from donors of lineage Kp than lineage Tp (10.11±0.66 versus 8.79±0.58, respectively), with more grade III oocytes being obtained in both lineages as compared to the others. Paternal lineage did not influence the quality of recovered oocytes in any other category, but both Kp and Tp yielded a great mean number of oocytes graded as I, II, and III (3.14±0.21; 4.93±0.33, and 10.11±0.66 versus 3.19±0.21, 5.59±0.44, and 8.79±0.58, respectively) than those classified as IV, V, VI, and VII. However, when considering the data from the maternal lineage significantly more oocytes (P<0.05) of grade I, II and III were obtained from Taj-Mahal (11.67 ± 0.67, 5.9±0.42 and 3.64±0.25, respectively) than for lineage Karvadi, with similar results for oocytes of grades IV, V, VI, and VII. Similarly to the paternal lineage, the number of oocytes of grade III was superior (P<0.05) when compared to other categories for both lineages. In conclusion, we demonstrate here a direct influence of lineage of oocyte donor on the production and quality of oocytes obtained through ultrasound-guided follicular aspiration in Nellore cows.

Detecção molecular do rearranjo Line-1 /c-Myc em tumores venéreos transmissíveis caninos espôntaneos

Transmissible venereal tumor (TVT) is a neoplasia that develops naturally in dogs. It can be easily transplanted, which demonstrates its ability to spread from animal to animal. Since the Linr-1/c-MYC rearrangement in TVT cells had not been studied at the Veterinary Hospital of the Veterinary School, Unesp in Botucatu, SP, this study aimed to detect this genetic alteration specific to this kind of tumor by means of the polymerase chain reaction (PCR). Twenty dogs with cytological diagnosis of TVT were used. Samples of neoplastic cells were collected to determine the presence of the Line-1/c-MYC marker. The rearrangement characterized by 340bp amplicons did not vary, in agreement with previous studies using the same methodology. This contributed to a more precise identification of persistent tumor cells in cases in which gross or microscopical detection was not possible.

Fatores maternos e neonatais associados ao mecônio no líquido amniótico em um centro de parto normal

OBJETIVO: Analisar a frequência e os fatores maternos e neonatais associados ao mecônio no líquido amniótico no parto. MÉTODOS: Estudo transversal com 2.441 nascimentos em um centro de parto normal hospitalar em São Paulo, SP, em março e abril de 2005. A associação entre mecônio no líquido amniótico e as variáveis independentes (idade materna, paridade, ter ou não cesariana prévia, idade gestacional, antecedentes obstétricos, uso de ocitocina no trabalho de parto, dilatação cervical na admissão, tipo do parto atual, peso do RN, índice de Apgar de 1º e 5º minutos de vida) foi expressa como razão de prevalência. RESULTADOS: Verificou-se mecônio no líquido amniótico em 11,9% dos partos; 68,2% desses foram normais e 38,8%, cesarianas. O mecônio esteve associado a: primiparidade (RP = 1,49; IC95% 1,29;1,73), idade gestacional ≥ 41 semanas (RP = 5,05; IC95% 1,93;13,25), ocitocina no parto (RP = 1,83, IC95% 1,60;2,10), cesariana (RP = 2,65; IC95% 2,17;3,24) e índice de Apgar < 7 no 5º minuto (RP = 2,96, IC95% 2,94;2,99). A mortalidade neonatal foi 1,6/1.000 nascidos vivos; mecônio no líquido amniótico foi encontrado em 50% das mortes neonatais e associado a maiores taxas de partos cirúrgicos. CONCLUSÕES: Emprego de ocitocina, piores condições do recém-nascido logo após o parto e aumento de taxas de cesariana foram fatores associados ao mecônio. A utilização rotineira de ocitocina no intraparto poderia ser revista por sua associação com mecônio no líquido amniótico.

Endotracheal suction in intubated critically ill adult patients undergoing mechanical ventilation: a systematic review

AIM: identify and analyze in the literature the evidence of randomized controlled trials on care related to the suctioning of endotracheal secretions in intubated, critically ill adult patients undergoing mechanical ventilation. METHOD: the search was conducted in the PubMed, EMBASE, CENTRAL, CINAHL and LILACS databases. From the 631 citations found, 17 studies were selected. RESULTS: Evidence was identified for six categories of intervention related to endotracheal suctioning, which were analyzed according to outcomes related to hemodynamic and blood gas alterations, microbial colonization, nosocomial infection, and others. CONCLUSIONS: although the evidence obtained is relevant to the practice of endotracheal aspiration, the risks of bias found in the studies selected compromise the evidence's reliability.