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Revista Tempo, Espa?o e Linguagem , 2010,
Abstract:
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TEL
Revista Tempo, Espa?o e Linguagem , 2010,
Abstract:
Inje o intracitoplasmática de espermatozóides na azoospermia n o-obstrutiva: compara o com histopatologia testicular prévia Resultados de la inyección intracitoplasmática de espermatozoides en hombres con azoospermia no obstructiva: utilidad de la biopsia testicular previa Outcome of intracytoplasmic sperm injection in non-obstructive azoospermia according to previous testicular histology
Adriana Arent,Claudio Telken,Ant?nio Hartmann,Mariangela Badalotti
Revista Colombiana de Obstetricia y Ginecología , 2006,
Abstract: Objetivo: avaliar o resultado de inje o intacitoplasmática de espermatozóides (ICSI) em homens com azoospermia n o obstrutiva de acordo com a histologia testicular prévia. Desenho: estudo retrospectivo e transversal. Materiais e métodos: foram estudados os resultados laboratoriais e clínicos em 59 casais (79 ciclos) submetidos a ICSI com uso de espermatozoide testicular. Foram divididos três grupos de acordo com a histologia testicular obtida em biópsia a fertiliza o (hipoespermatogênese, parada de matura o espermática e aplasia de células germinativas) e os resultados da ICSI foram comparados entre os grupos. Resultados: o achado histoplatológico mais frequante foi hipoespermatogenese (61%), seguido por parada de matura o (22%) e aplasia de células germinativas (17%). A recupera o espermática e a taxa de fertiliza o oocitária foram superiores no grupo com hipoespermatogênese (p < 0,01) que na parada de matura o (50% e 40.7%) e aplasia de células germinativas (21.4% e 36.8%). A clivagem embrionária foi superior em pacientes com hipoespermatogênese (95.9%) seguido de parada de matura o (87.5%) e aplasia de células germinativas (71.4%) (p = 0.001). N o houve diferen a no desenvolvimento embrionário. A taxa de gesta o clínica por ICSI e por ciclos com transferência embrionária foram 25.3% e 37.7%, respectivamente. Conclus es: a biópsia testicular tem valor clinico no aconselhamento de casais inférteis. A pesar de pacientes com hipoespermatogênese apresentarem os melhores resultados, obten o de espermatozoides e fertiliza o oocitária s o possíveis, mesmo nos casos onde n o foram encontrados em biopsia testicular prévia. Objetivo: evaluar el resultado de la inyección intracitoplasmática de espermatozoides (ICSI) en parejas cuyos hombres mostraron azoospermia no obstructiva en conformidad con el hallazgo histológico del testículo. Dise o: estudio retrospectivo con análisis transversal. Materiales y métodos: han sido estudiados los resultados de laboratorio y clínicos en 59 parejas (79 ciclos) sometidas a la ICSI. Los hombres han sido divididos en 3 grupos de acuerdo con el reporte histológico obtenido en biopsia previa a la fertilización (hipoespermatogénesis, detención de la maduración espermática y aplasia de las células germinativas) y los resultados han sido comparados entre los grupos. Resultados: el hallazgo principal fue la hipoespermatogénesis (61%), seguido por la detención de la maduración espermática (22%) y la aplasia de las células germinativas (17%). Los espermatozoides estuvieron presentes en 87,7% y la tasa de fertilización (58,8%) e
Leaf degradation of Salix humboldtiana Willd: (Salicaceae) and invertebrate colonization in a subtropical lake (Brazil)
Telken, Franko;Albertoni, Edélti Faria;Palma-Silva, Cleber;
Acta Limnologica Brasiliensia , 2011, DOI: 10.4322/actalb.2011.016
Abstract: aim: to evaluate leaf degradation and invertebrate colonization of salix humboldtiana willd. in a subtropical shallow lake on the coastal plain of rio grande do sul, brazil; methods: litter bags containing 6.85 g of leaves were incubated in the superficial layer of sediment in the littoral region for 1, 4, 7, 14, 32, 47 and 71 days; results: after 71 days, a loss of 51% of the initial leaf weight was observed (k = 0.0100 d-1). we estimated that it would take 300 days to lose 95% of the initial weight. a total of 16040 organisms and 35 taxa were identified. caenidae (25.9%), oligochaeta (19%), ostracoda (13.8%), hydracarina (9.8%), tanypodinae (9.7%) and coenagrionidae (7.7%) were the most highly represented taxa. we observed increases in density, richness and diversity of taxa over time, with a stabilizing trend noted in the taxa diversity. regarding the functional trophic groups (ftgs), gathering-collectors accounted for 57.6% of the community, while predators (25%), scrapers (15.8%), filtering-collectors (0.88%) and shredders (0.73%) were also represented. the diversity and evenness of the ftgs had stabilized by day 14; conclusions: s. humboldtiana detritus provides a favorable habitat for a sufficient duration to support a high density and diversity of aquatic invertebrates. the small percentage of shredders indicates the minor influence of the invertebrate community on the rate of detrital degradation. the main contribution of invertebrates to detrital processing comes from the consumption of fine particulate organic matter by gathering-collectors.
Estudio prospectivo que compara laparoscopia y cirugía abierta para el tratamiento de cálculos ureterales impactados
Almeida,Gilberto L.; Heldwein,Flavio L.; Graziotin,Tulio M.; Schmitt,Caio S.; Telken,Cláudio;
Actas Urológicas Espa?olas , 2009, DOI: 10.4321/S0210-48062009001000013
Abstract: introduction and objectives: to investigate two ureterolithotomy approaches for treatment of large and impacted upper ureteral stones, we prospectively evaluated the perioperative features of consecutive patients submitted to ureterolithotomy following failure of endourological treatment. methods: of the 110 patients included in the study, 34 underwent laparoscopic ureterolithotomy. patients were divided into three ureterolithotomy subgroups (group a, 76 open procedures; group b, 16 transperitoneoscopies and group c, 19 retroperitoneoscopies). all procedures were performed into a urology residency program. results: the patients? age, sex, asa classification and stones characteristics showed no significant difference between the groups. overall, complication rates and the operation times recorded were similar. one patient had bilateral stones and both sides were managed in a single transperitoneoscopy procedure. three retroperitoneoscopies were converted to an open surgery due technical difficulties. a prolonged urinary leakage occurred in 3/35 cases (8.5%) where 2 patients were treated by placing a ureteral catheter. both laparoscopic groups have significantly less analgesia requirements and shorter hospitalization (p < 0.001 and p = 0.003, respectively). all patients were stone-free in the follow-up 1-month visit. conclusions: to our knowledge, my in a laparoscopic training scenario. even though these procedures were performed by limited laparoscopic experience urologists, laparoscopy offered significant advantages over traditional open ureterolithotomy, resulting in improved analgesia, shorter hospital stays and similar complication rates.
Resultados de la inyección intracitoplasmática de espermatozoides en hombres con azoospermia no obstructiva: utilidad de la biopsia testicular previa
Arent,Adriana; Telken,Claudio; Hartmann,Ant?nio; Badalotti,Mariangela; Petracco,Rafaella; Petracco,Alvaro;
Revista Colombiana de Obstetricia y Ginecología , 2006,
Abstract: objective: evaluating icsi outcome using testicular spermatozoa in patients having non-obstructive azoospermia according to the histological finding of a previous testicular biopsy. design: retrospective and transversal study. patients and methods: we evaluated the laboratory outcome and clinical results of 59 couples undergoing 79 icsi cycles with testicular sperm retrieval. these patients were divided into three groups according to testicular histology (hypospermatogenesis, maturation arrest and germ cell aplasia) revealed in biopsy prior to icsi. the icsi was compared to the other groups. results : the most frequent testicular histological finding was hypospermatogenesis (61%), followed by maturation arrest (22%) and germ cell aplasia (17%). sperm recovery and oocyte fertilisation were higher in the hypospermatogenesis group (p < 0,01) than in maturation arrest (50% and 40.7%) and germ cell aplasia (21.4% and 36.8%). embryo cleavage was higher in patients having hypospermatogenesis (95.9%) followed by maturation arrest (87.5%) and germ cell aplasia (71.4%) (p = 0.001). the groups presented no difference in embryo development. total clinical pregnancy rate per icsi cycles and per cycles with embryo transfer were 25.3% and 37.7%, respectively. conclusions: testicular biopsy has clinical value when counselling infertile couples. although patients with hypospermatogenesis returned the best results, sperm recovery and oocyte fertilization are possible, even in cases where no spermatozoa were found in testicular biopsy.
Osteotomia valgizante para pseudartrose do colo do fêmur: relato de 32 casos
Schwartsmann, Carlos Roberto;Telken, Marco Aurélio;Boschin, Leonardo Carbonera;Schmiedt, Ivo;Falavinha, Ricardo;Crestani, Marcus Vinicius;
Revista Brasileira de Ortopedia , 2009, DOI: 10.1590/S0102-36162009000200012
Abstract: purpose: the purpose of the present study was to review the results of femoral neck non-unions treatment with valgusing intertrochanteric osteotomy. methods: between 1988 and 2003 we treaded thirty two femoral neck non-unions with valgusing osteotomy and fixation. the mean follow-up time was 9.8 years and the mean age was 41.7 years. results: twenty eight (87.4%) of the thirty two valgusing osteotomies evolved to femoral neck union, while four cases (12.6%) evolved to total hip arthroplasty. eight cases evolved to partial osteonecrosis. conclusions: the valgusing intertrochanteric osteotomy for treating femoral neck non-unions achieved consolidation in 87.4% (28/32). however, only 56.2% (18/32) achieved full recovery of hip function.
Identifying Barriers to the Remix of Translated Open Educational Resources
Tel Amiel
International Review of Research in Open and Distance Learning , 2013,
Abstract: Remix is touted as one of the most important practices within the field of open educational resources (OER). But remixing is still not mainstream practice in education and the barriers and limitations to remix are not well known. In this article we discuss the design and development of a print and web-based booklet created to introduce the topic of OER to schoolteachers. The guide, the first of its kind available in Portuguese, was created through the remix and translation of existing resources available in English. Choosing design-as-remix raised a series of concerns related to licensing, attribution, context, and technical standards. In this article we review the concerns related to culture and inequity within the OER movement, followed by the design choices and procedures, and finally the implications of these issues for the open educational resources movement.
Efeitos do alopurinol sobre a lipoperoxida??o de membranas celulares renais na síndrome da isquemia e reperfus?o: estudo experimental em ratos
Rhoden, Ernani Luís;Mauri, Marcelo;Petteffi, Leonardo;Dacanal, Francisco;Pilla, Marco;Belló-Klein, Adriane;Telken, Cláudio;Barros, Elvino;Rhoden, Cláudia Ramos;
Acta Cirurgica Brasileira , 1998, DOI: 10.1590/S0102-86501998000200002
Abstract: background: evidence has accumulated that oxygen free radical (ofr) contribute to the cellular damage induced by ischemia-reperfusion. this study was undertaken to determine the effects of renal ischemia-reperfusion in rats, treated or not with allopurinol evaluating the lipid peroxidation (lpo) of renal cellular membranes. method: wistar rats were divided into 4 groups (n=10) and submitted to 50 minutes of renal ischemia and reperfusion and treated or not with allopurinol (50 and 150 mg/kg of body, 5 and 1 hour before ischemia, respectively). the lipid peroxidation was assessed by tbars method (thiobarbituric acid reactives substances) and cl method (chemiluminescence). results:the results showed that animals submitted to renal ischemia-reperfusion had renal lpo damage. these effects of ischemia and reperfusion were reduced by treatment with allopurinol (p<0,05). conclusion: these results suggest that xanthine oxidase is one of the most important pathway envolved in the generation of ofr and chemical reactives elements with injury potencial at the renal cellular membranes due to ischemia-reperfusion syndrome. at least, allopurinol showed benefical effects preventing damage due to renal ischemia-reperfusion injury.
O turista aprendiz na Amaz?nia: a inven??o no texto e na imagem
Lopez, Telê Ancona;
Anais do Museu Paulista: História e Cultura Material , 2005, DOI: 10.1590/S0101-47142005000200005
Abstract: the object of this study is brazilian writer mário de andrade (1893-1945) in his experience as a modern photographer, during his stay in the northern region of brazil, specially in the amazon region, during the first of his two long apprentice tourist trips throughout brazil in 1927. the author analyses the creative process by which the codaque's images constitute the prints and negatives image diary that overlaps with the diary of legends and of text where the traveller's impressions and the fictionist's invention are developed. the article highlights certain links between the photography produced in this trip and andrade's readings, poetry and fiction.
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