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The physiological mechanisms that lead to the requirement for synchronous embryo transfer have been defined in some species, particularly the sheep. In mated animals, variation in hormone profile and embryo stage have been shown to be sufficient to cause some embryo loss, perhaps by generating an asynchronous relationship. During procedures of embryo transfer, there may be additional divergence between hormone profile and embryo stage. It may be beneficial to supply hormones to recipients and to transfer embryos at a particular stage of development at a precise interval after initiation of this treatment. 相似文献
434.
Brun-Cottan Baptiste Assemat Pauline Doyeux Vincent Accadbled Franck Sales de Gauzy Jérôme Compagnon Roxane Swider Pascal 《Biomechanics and modeling in mechanobiology》2021,20(1):359-370
Biomechanics and Modeling in Mechanobiology - The adolescent idiopathic scoliosis (AIS) is a 3D deformity of the spine whose origin is unknown and clinical evolution unpredictable. In this work, a... 相似文献
435.
Patrícia d‘Emery Alves Santos Virgínia Maria Barros de Lorena érica de Souza Fernandes Iana Rafaela Fernandes Sales Wheverton Ricardo Correia do Nascimento Yara de Miranda Gomes M?nica Camelo Pessoa de Azevedo Albuquerque Vlaudia Maria Assis Costa Valdênia Maria Oliveira de Souza 《Memórias do Instituto Oswaldo Cruz》2016,111(2):83-92
Schistosoma mansoni antigens in the early life alter homologous and
heterologous immunity during postnatal infections. We evaluate the immunity to
parasite antigens and ovalbumin (OA) in adult mice born/suckled by schistosomotic
mothers. Newborns were divided into: born (BIM), suckled (SIM) or born/suckled (BSIM)
in schistosomotic mothers, and animals from noninfected mothers (control). When
adults, the mice were infected and compared the hepatic granuloma size and
cellularity. Some animals were OA + adjuvant immunised. We evaluated hypersensitivity
reactions (HR), antibodies levels (IgG1/IgG2a) anti-soluble egg antigen and
anti-soluble worm antigen preparation, and anti-OA, cytokine production, and
CD4+FoxP3+T-cells by splenocytes. Compared to control group,
BIM mice showed a greater quantity of granulomas and collagen deposition, whereas SIM
and BSIM presented smaller granulomas. BSIM group exhibited the lowest levels of
anti-parasite antibodies. For anti-OA immunity, immediate HR was suppressed in all
groups, with greater intensity in SIM mice accompanied of the remarkable level of
basal CD4+FoxP3+T-cells. BIM and SIM groups produced less
interleukin (IL)-4 and interferon (IFN)-g. In BSIM, there was higher
production of IL-10 and IFN-g, but lower levels of IL-4 and
CD4+FoxP3+T-cells. Thus, pregnancy in schistosomotic mothers
intensified hepatic fibrosis, whereas breastfeeding diminished granulomas in
descendants. Separately, pregnancy and breastfeeding could suppress heterologous
immunity; however, when combined, the responses could be partially restored in
infected descendants. 相似文献
436.
André Luis Souza dos Santos Amanda Ferreira Vanessa Ayrão Franco Celuta Sales Alviano Rosangela Maria de Araújo Soares 《Current microbiology》1999,39(2):61-64
We have analyzed the proteinase profile of two Herpetomonas species, H. anglusteri and H. roitmani (a symbiont-bearing trypanosomatid), by in situ detection of enzyme activities on SDS-PAGE gels containing copolymerized
gelatin as substrate. Two major cell-associated proteolytic activities, a 60 kDa zinc-metalloproteinase and a 45 kDa cysteine
proteinase could be detected based on the inhibition of their activities by 1,10-phenathroline and E-64, respectively. The
trypanosomatids released into the growth medium distinct proteinases. H. anglusteri expressed three digestion haloes in the gels of approximately 60, 50, and 40 kDa, whereas H. roitmani secreted only a 60 kDa enzyme. However, these activities were inhibited by 1,10-phenanthroline, suggesting that all of them
are zinc-metalloproteinase.
Received: 16 February 1999 / Accepted: 2 March 1999 相似文献
437.
Naiara Guimarães Sales Mariane da Cruz Kaizer Ilaria Coscia Joseph C. Perkins Andrew Highlands Jean P. Boubli William E. Magnusson Maria Nazareth Ferreira Da Silva Chiara Benvenuto Allan D. Mcdevitt 《Mammal Review》2020,50(3):221-225
The application of environmental DNA (eDNA) metabarcoding as a biomonitoring tool has greatly increased, but studies have focused on temperate aquatic macro-organisms. We apply eDNA metabarcoding to detecting the mammalian community in two high-biodiversity regions of Brazil: the Amazon and Atlantic Forests. We identified Critically Endangered and Endangered mammalian species and found overlap with species identified via camera trapping. We highlight the potential for using eDNA monitoring for mammals in biodiverse regions and identify challenges: we need a better understanding of the ecology of eDNA within variable environments and more appropriate reference sequences for species identification in these anthropogenically impacted biomes. 相似文献
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Bicca-Marques Júlio César Rabelo Rafael Magalhães de Almeida Marco Antônio Barreto Sales Lilian Patrícia 《International journal of primatology》2022,43(1):74-91
International Journal of Primatology - Infectious diseases are a growing threat to the conservation of nonhuman primates. In the case of diseases shared with humans, the risk is higher where... 相似文献