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au:Henry, Marc

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Post-thaw quality of ram sperm frozen with different concentrations of low-density lipoproteins associated with non-enzymatic antioxidants
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Snoeck, Paola Pereira das Neves

; Câmara, Diogo Ribeiro

; Moura, Luís Cláudio de Oliveira

; Silva, Maíra Corona da

; Machado-Neves, Mariana

; Teixeira-Neto, Milton Rezende

; Henry, Marc

Animal Reproduction

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2023, Volume 20 N. 1 elocation e20220068

Abstract: En | Text: En | PDF: En

Abstract The cryopreservation reduces ram sperm quality, decreasing the pregnancy rate of ewes inseminated with thawed sperm. Hence, we aimed to improve the post-thaw quality of ram sperm replacing egg yolk on Tris-Glucose extender with different concentrations of LDL (2 or 8%), associated with the addition of 10 mM non-enzymatic antioxidants (ascorbic acid, hydroxytoluene butylate, ascorbyl palmitate, and trehalose). Semen samples were collected from six rams, split into different treatments, and frozen. After thawing, kinematic (CASA), structural (propidium iodide and carboxyfluorescein diacetate) and functional (hypoosmotic test) sperm membrane integrity was assessed. Total motility, VCL, and LIN were also assessed in thawed samples during 3 h of incubation (38 °C). The results showed that hydroxytoluene butylate at 10 mM in Tris-Glucose extender with 8% LDL improved velocity parameters immediately post-thaw compared with Tris-Glucose egg yolk extender, as well as prevented the reduction of total motility and VCL after incubation. There was no benefit of adding ascorbic acid and trehalose. Moreover, for the first time, it was shown the motility impairment promoted by ascorbyl palmitate to ram sperm.

https://doi.org/10.1590/1984-3143-ar2022-0068

Three superovulation protocols for in vivo embryo production in Santa Inês sheep
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Arashiro, Eduardo Kenji Nunes

; Pinto, Pedro Henrique Nicolau

; Lima, Julia Timponi Moura

; Henry, Marc

; Ascoli, Fábio Otero

; Souza-Fabjan, Joanna Maria Gonçalves

; Fonseca, Jeferson Ferreira Da

; Brandão, Felipe Zandonadi

Ciência Rural

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2022, Volume 52 N. 8 elocation e20210308

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO: Ainda não há consenso sobre qual é o protocolo mais apropriado para a produção in vivo de embriões em ovinos, apesar do crescente conhecimento. Uma abordagem para mitigar a variabilidade de resposta de ovelhas à superovulação (SOV) é iniciar a aplicação de gonadotrofinas em uma condição ovariana favorável. O presente estudo comparou três tratamentos em delineamento do tipo crossover: protocolo de SOV tradicional (TRAD) e “Dia 0” D0 SOV sem (D0-GnRH) ou com GnRH (D0+GnRH). Quinze ovelhas Santa Inês foram superovuladas com 200 mg de FSH em seis doses decrescentes e receberam PGF2α na quinta dose de FSH. As ovelhas foram submetidas a monta natural com carneiros férteis e os embriões colhidos por via cirúrgica. O número de embriões viáveis não diferiu entre os tratamentos (TRAD = 6,0 ± 4,7; D0-GnRH = 3,8 ± 6,4; D0+GnRH = 7,5 ± 6,5). Independentemente do tratamento, ovelhas com folículos ≤ 4 mm na primeira dose de FSH produziram mais embriões viáveis (9,6 ± 6,0; P < 0.05) quando comparadas aos animais que apresentavam folículos > 4 mm no início da SOV (2,9 ± 3,1 embriões viáveis). Os grupos TRAD e D0+GnRH apresentaram menor número de animais com folículos grandes (> 4 mm), no momento da primeira dose de FSH, quando comparados ao grupo D0-GnRH (P < 0,05). Em conclusão, os protocolos TRAD e D0+GnRH induziram uma condição ovariana mais favorável (folículos ≤ 4 mm) para a SOV. No entanto, os três tratamentos apresentaram eficiência semelhante em ovelhas Santa Inês.

ABSTRACT: There is still no consensus regarding the best protocol for in vivo embryo production in sheep despite increasing studies in this area. Moreover, there is variability in the response of ewes to superovulation (SOV). An approach to mitigate this inconsistency is to initiate gonadotropin administration under favorable ovarian conditions. The present study compared three treatments in a crossover design: a traditional SOV protocol (TRAD) and “Day 0” D0 SOV protocol with (D0+GnRH), or without Lecilerin (D0-GnRH). Fifteen Santa Inês ewes received 200 mg of FSH at six decreasing doses and PGF2α with the fifth dose of FSH. They were naturally mated with fertile rams and subjected to surgical embryo collection. The number of viable embryos was similar among the different treatments (TRAD = 6.0 ± 4.7; D0-GnRH = 3.8 ± 6.4; D0+GnRH = 7.5 ± 6.5). Regardless of the treatment method, ewes with follicles ≤ 4 mm, at the first FSH dose, produced more viable embryos (9.6 ± 6.0, P < 0.05) compared to ewes that had follicles > 4 mm at the beginning of the SOV (2.9 ± 3.1, viable embryos). Both the TRAD and D0+GnRH groups had fewer animals with large follicles (> 4 mm) at the first FSH dose than the D0-GnRH group (P < 0.05). In conclusion, both the TRAD and D0+GnRH treatments induced a more favorable ovarian condition (follicles ≤ 4 mm) for adequate SOV; although, all three treatments exhibited similar efficacies in Santa Inês sheep.

https://doi.org/10.1590/0103-8478cr20210308

Palliative care as a form of relief for the dying: a South African perspective
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Welgemoed, Marc

; Lerm, Henry

Obiter

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2021, Volume 42 N. 2 Pages 348 - 370

Abstract: En | Text: En | PDF: En

This article has a critical look at the current state of affairs in palliative care in South Africa. While euthanasia remains unlawful in South Africa, there is only one alternative - namely, palliative care - to mitigate pain and symptoms, make life tolerable, and ease the emotional stress of dying for patients and their families. Palliative care, unlike euthanasia, has always been regarded as a sound medical practice, ethically, morally and legally. The practice the world over includes family, friends and community. However, no system or legislation has been put in place in South Africa to serve as a guideline for end-of-life practices. The focus of this article is to try to establish guidelines through a multidisciplinary approach that includes the family and makes use of community resources to improve the quality of life of patients and families facing the problems associated with life-threatening illness, through the prevention and relief of suffering.

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Impact of in vitro fertilization by refrigerated versus frozen buffalo semen on developmental competence of buffalo embryos
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Almeida, Jaci

; Neves, Beatriz Parzewski

; Brito, Mayara Ferreira

; Freitas, Robson Ferreira

; Lacerda, Lílian Gabriel

; Grapiuna, Lira Santos

; Haddad, João Paulo

; Auler, Patrícia Alencar

; Henry, Marc

Animal Reproduction

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2020, Volume 17 N. 4 elocation e20200033

Abstract: En | Text: En | PDF: En

Abstract The objective of this study was to evaluate the fertility of buffalo semen for in vitro embryo production (IVEP) by comparing the effectiveness of refrigerated versus frozen semen. Three OPU sessions were held at 30-day intervals. For oocyte fertilization three buffalo bulls were used, one per session. At each OPU-IVEP session, one ejaculate was collected and divided into two equal aliquots. Each aliquot was either refrigerated at 5ºC/24 hours or frozen. A TRIS extender containing 10% low density lipoproteins, 0.5% lecithin and 10 mM acetylcysteine was used adding 7% glycerol for freezing. Sperm motility/kinetic was evaluated by CASA and sperm membrane integrity by the hypoosmotic swelling test. The evaluations were performed at 0 h (post final dilution at 37ºC), at 4 and 24 hs post-incubation at 5ºC and post-thaw. At 24 hs incubation and immediately post thaw sperm cells were used for in vitro fertilization of buffalo oocytes equally distributed between both groups. Cleavage rates and embryo development were followed. The embryo/matured and embryo/cultured rates were 25.4 x 14.0% and 29.4 x 18.5% (P<0.05), for chilled and frozen semen, respectively. It is concluded that cooled semen can be used for in vitro embryo production in buffalo and that a better efficiency may be expected for cooled compared to frozen semen.

https://doi.org/10.1590/1984-3143-ar2020-0033 515 downloads

Palliative care as a form of relief for the dying: a south african perspective
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Welgemoed, Marc

; Lerm, Dr Henry

Obiter

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2020, Volume 41 N. 2 Pages 348 - 370

Abstract: En | Text: En | PDF: En

147 downloads

SEAmester - South Africa's first class afloat
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Ansorge, Isabelle J.

; Brundrit, Geoff

; Brundrit, Jean

; Dorrington, Rosemary

; Fawcett, Sarah

; Gammon, David

; Henry, Tahlia

; Hermes, Juliet

; Hölscher, Beate

; d'Hotman, Jethan

; Meiklejohn, Ian

; Morris, Tammy

; Pinto, Izidine

; du Plessis, Marcel

; Roman, Raymond

; Saunders, Clinton

; Shabangu, Fannie W.

; Vos, Marc de

; Walker, David R.

; Louw, Gavin

South African Journal of Science

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oct 2016, Volume 112 N. 9-10 Pages 1 - 4

Abstract: En | Text: En | PDF: En

https://doi.org/10.17159/sajs.2016/a0171 454 downloads

Plasmocitoma Óseo Solitario
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Franquelo Morales, Pablo

; Valero Serrano, Beatriz

; Syldor, Marc Henry

; González Martínez, Félix

Revista Clínica de Medicina de Familia

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oct 2010, Volume 3 N. 3 Pages 229 - 232

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

Chronic low back pain is a common reason for visiting the doctor and although in most cases it has a mechanical character, 1-5% are of neoplasic origin. Solitary bone plasmacytoma is a rare plasma cell tumor located mainly in the spine, causing pain especially in the thoracic and lumbar region. We report the case of a 78 year old woman with chronic back pain and POEMS syndrome, in which a lytic bone image was found in a lumbar radiography corresponding to a solitary bone plasmacytoma confirmed by biopsy.

El dolor lumbar crónico constituye un motivo frecuente de consulta y, aunque en la mayoría de las ocasiones presenta un carácter mecánico, en un 1-5 % demuestra un origen neoplásico. El plasmocitoma óseo solitario es un tumor de células plasmáticas poco habitual que asienta principalmente en la columna vertebral, provocando dolor sobre todo a nivel torácico y/o lumbar. Se presenta el caso de una mujer de 78 años con dolor lumbar crónico y síndrome de POEMS, en la que se halló una imagen ósea lítica en una radiografía lumbar, correspondiente a un plasmocitoma óseo solitario que se confirmó mediante biopsia.

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¿Neumoperitoneo?
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Syldor, Marc Henry

; González Martínez, Félix

; Ureña Rengel, Erick

Revista Clínica de Medicina de Familia

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jun 2010, Volume 3 N. 2 Pages 141 - 142

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

The interposition of the bowel between the liver and diaphragm, known as Chilaiditi's sign, is usually found by chance during a radiological examination for another reason, as it is often asymptomatic. When this finding is accompanied by clinical symptoms such as abdominal pain, nausea, vomiting or constipation it is known as Chilaiditi's syndrome. This syndrome is rare and generally responds favourably to conservative treatment. We consider it of maximum interest to be aware of this syndrome given its wide range clinical signs and symptoms that could mimic other conditions, especially pneumopertoneum due perforated hollow viscera. In such cases, a simple X-ray of the chest or abdomen could be sufficient to recognise this condition. We present the case of a 50 year old man who had acute, severe epigastric pain, with suspicion of surgical abdomen. A definite diagnosis was made possible through imaging tests X-ray and CAT scan).

La interposición hepatodiafragmática del colon, conocido como signo de Chilaiditi, se descubre generalmente en forma causal durante un estudio radiológico por otra causa, pues su presentación suele ser asintomática. Cuando el hallazgo se acompaña de síntomas clínicos como dolor abdominal, nauseas, vómitos o estreñimiento, se conoce como síndrome de Chilaiditi. Este síndrome es de escasa frecuencia y responde generalmente de forma favorable a tratamientos conservadores. Consideramos de gran interés conocerlo dado la gran variabilidad de sus formas de presentación clínica, que pueden mimetizar otras entidades, entre las que destaca sobretodo el neumoperitoneo por rotura de víscera hueca. En estos casos, una radiografía simple de tórax o abdomen puede bastar para el reconocimiento de esta entidad. Presentamos el caso de un varón de 50 años que presentó clínica aguda de intenso dolor epigástrico, con sospecha de abdomen quirúrgico y en el que la realización de pruebas de imagen (radiografía y TAC) hizo posible el diagnóstico definitivo.

4721 downloads

Relação da taxa de gestação com sêmen bovino congelado e testes de avaliação espermática in vitro
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Siqueira, Jeanne Broch

; Guimarães, José Domingos

; Costa, Eduardo Paulino da

; Henry, Marc

; Torres, Ciro Alexandre Alves

; Silva, Marcos Vinícius Gualberto Barbosa da

; Silveira, Thiago da Silva

Revista Brasileira de Zootecnia

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apr 2007, Volume 36 N. 2 Pages 387 - 395

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Avaliou-se a relação entre os testes complementares (teste hiposmótico, teste de termorresistência lento e teste de reação acrossômica) e os testes de avaliações convencionais (aspectos físicos e morfológicos) de sêmen bovino congelado/descongelado e os índices de prenhez. Os valores médios da motilidade espermática progressiva retilínea avaliados pelo teste de termorresistência foram de 53,48 (pós-descongelamento), 43,69 (60 minutos), 35,88 (120 minutos) e 33,04% (180 minutos) e a porcentagem de células reativas ao teste hiposmótico foi de 37,89%. Correlação positiva e de média intensidade foi encontrada para a motilidade espermática progressiva retilínea pós-descongelamento e o teste hiposmótico (0,21). Entretanto, a correlação da motilidade aos 180 minutos com o teste hiposmótico foi alta (0,64). A porcentagem de células que tiveram acrossoma reagido pós-descongelamento foi de 9,85%, apresentando correlações negativas de média e alta intensidade (-0,25 e -0,46, respectivamente) com a motilidade espermática progressiva retilínea pós-descongelamento e após 3 horas de incubação. Não houve correlação dos testes complementares e da motilidade pós-descongelamento com a taxa de gestação. Nenhum parâmetro considerado isoladamente serviu para avaliar a capacidade fertilizante do sêmen congelado/descongelado.

The objective of this study was to evaluate the relationship between complementary (hiposmotic, thermo-resistance and acrosome reaction tests) and conventional evaluations (physical and morphologic aspects) of bovine frozen/thawed semen and conception rates. Average values for spermatic motility evaluated by thermo-resistance test were of 53.48% (post-thawed), 43.69% (60 minutes), 35.88% (120 minutes) and 33.04% (180 minutes). The percentage of reactive cells observed for the hiposmotic test was 37.89%. Average intensity was observed for post-thawing spermatic motility, positively correlated to hiposmotic test (0.21). However, correlation between motility in the 180 minutes and hiposmotic test was high (0.64). The percentage of cells presenting post-thawing acrosome reaction was 9.85%, which was negative correlated to post-thawing (-0.25) and after three hours of incubation (-0.46) spermatic motility. No correlation was observed for complementary tests and post-thawed motility and the conception rate. No one of the parameters evaluated in this study was individually able to indicate the fertilizing capacity of the frozen/thawed semen.

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Efeito da somatotropina na população folicular, recuperação de oócitos e produção in vitro de embriões em vacas Gir
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Ramos, Alessandra de Almeida

; Ferreira, Ademir de Moraes

; Sá, Wanderlei Ferreira de

; Viana, João Henrique Moreira

; Camargo, Luiz Sérgio de Almeida

; Polisseni, Juliana

; Henry, Marc

Revista Brasileira de Zootecnia

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apr 2007, Volume 36 N. 2 Pages 380 - 386

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Avaliou-se o efeito da pré-estimulação ovariana com somatotropina bovina recombinante (rbST), associada ou não ao FSH, sobre a população folicular, a recuperação de oócitos e a produção in vitro de embriões em vacas Gir. Utilizaram-se vacas não-lactantes, em boas condições reprodutiva e corporal, cujo ciclo estral foi sincronizado pela administração de 0,5 mg de cloprostenol. Durante o experimento, as vacas receberam continuamente implantes auriculares de norgestomet, renovados a cada 14 dias, e, posteriormente, foram submetidas aos tratamentos: T1 ou controle - punção sem tratamento pré-estimulatório; T2 - aplicação única de 160 mg de rbST antes de cada punção; e T3 - punção após o tratamento com 160 mg de rbST em aplicação única, seguida de administração de 250 UI de FSH em doses decrescentes. Os oócitos foram maturados e fertilizados in vitro e os presumíveis zigotos foram cultivados por 192 horas pós-fertilização. Os tratamentos não foram diferentes quanto à população folicular presente no ovário. Entretanto, com a administração de 250 UI de FSH (T3), verificou-se aumento no diâmetro do maior folículo e no número de folículos grandes e médios e diminuição no número de folículos pequenos. A taxa de recuperação não diferiu entre o tratamento controle e T3 (com administração de FSH), mas foi menor no T2 (aplicação, em dose única, de 150 mg de rbST antes de cada punção). O número de oócitos de grau 1 foi maior e o de degenerados, menor no T3 em relação ao T1 e ao T2. O rbST (T2) aumentou a taxa de clivagem e a produção de blastocistos e, quando associado ao FSH, melhorou a qualidade dos oócitos nos animais Gir.

The aim of this study was to evaluate ovarian pre-stimulation using recombinant bovine somatotropin (rbST) or rbST associated to FSH on follicular population, oocyte retrieval and in vitro embryo production in Gir cows (Bos indicus). Estrous cycle of non-lactating cycling cows with similar body and reproductive conditions were synchronized with cloprostenol followed by norgestomet ear implants, replaced every fourteen days. The animals were randomly distributed in three treatments: TI or control (punctured without pre-stimulation), TII (injection of 160 mg of rbST, before each aspiration) and TIII (injection of 160 mg of rbST followed by administration of 250 U.I. of FSH, before each aspiration). Oocytes were maturated and fertilized in vitro and presumptive zygotes were cultured in vitro for 192 hours post-fertilization. Treatments did not differ for ovarian follicular population. However, an increase in the diameter of the largest follicle and in the number of large and medium follicles with reduction in the number of small follicles was observed for TIII. Oocyte recovery did not differ between TI and TIII, but recovery rate was lower for TII. The number of grade I oocytes was higher and the number of degenerated oocytes was lower for TIII than for TI or TII. The rbST increased cleavage rate and blastocyst production, and when associated to FSH the quality of oocyte in Gir animals was improved.

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