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Letteratura scientifica selezionata sul tema "Brown antechinus Reproduction"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 1 febbraio 2022

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Articoli di riviste sul tema "Brown antechinus Reproduction"

1

Brandies, Parice A., Simon Tang, Robert S. P. Johnson, Carolyn J. Hogg e Katherine Belov. "The first Antechinus reference genome provides a resource for investigating the genetic basis of semelparity and age-related neuropathologies". Gigabyte 2020 (5 novembre 2020): 1–22. http://dx.doi.org/10.46471/gigabyte.7.

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Abstract (sommario):

Antechinus are a genus of mouse-like marsupials that exhibit a rare reproductive strategy known as semelparity and also naturally develop age-related neuropathologies similar to those in humans. We provide the first annotated antechinus reference genome for the brown antechinus (Antechinus stuartii). The reference genome is 3.3 Gb in size with a scaffold N50 of 73Mb and 93.3% complete mammalian BUSCOs. Using bioinformatic methods we assign scaffolds to chromosomes and identify 0.78 Mb of Y-chromosome scaffolds. Comparative genomics revealed interesting expansions in the NMRK2 gene and the protocadherin gamma family, which have previously been associated with aging and age-related dementias respectively. Transcriptome data displayed expression of common Alzheimer’s related genes in the antechinus brain and highlight the potential of utilising the antechinus as a future disease model. The valuable genomic resources provided herein will enable future research to explore the genetic basis of semelparity and age-related processes in the antechinus.

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2

Yousef, A., e L. Selwood. "Embryonic development in culture of the marsupials Antechinus stuartii (Macleay) and Sminthopsis macroura (Spencer) during preimplantation stages". Reproduction, Fertility and Development 5, n. 4 (1993): 445. http://dx.doi.org/10.1071/rd9930445.

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Abstract (sommario):

Forty-nine blastocysts from 11 brown antechinus, Antechinus stuartii, and 96 blastocysts from 17 stripe-faced dunnarts, Sminthopsis macroura, were used to develop a culture system for embryos during preimplantation stages. Blastocysts of brown antechinus were collected on Days 6-9 for unilaminar stages, Days 16-21 for bilaminar stages and Days 20 and 21 for trilaminar stages. Blastocysts of stripe-faced dunnarts were collected on Day 6 for unilaminar stages, Days 6-8 for bilaminar stages and Day 8 for trilaminar stages. Culture media were Dulbecco's modified Eagle's medium (DMEM) with 4.5% glucose and Whittingham's T6 medium both of which were supplemented with 5, 10, 12.5 and 20% fetal calf serum (FCS). Antechinus serum (5%) and bovine serum albumin (0.1%, 0.2%) were also added to some media. Human amniotic fluid (HAF) and Monomed media were also tested. Blastocysts were cultured at 35 degrees C in 5% CO2 in air. DMEM + 10% FCS and HAF supported normal development for the longest periods and over the greatest range of stages. Developmental failure of blastocysts in vitro during expansion of the unilaminar blastocyst and formation of the bilaminar blastocyst suggests that these stages may be dependent on uterine signals. When cultured in DMEM + 10% FCS, the rate of development of bilaminar and trilaminar blastocysts into organogenesis was 4 h slower than in vivo in the stripe-faced dunnart and about 6 h slower than in vivo in the brown antechinus. Embryos of stripe-faced dunnarts were cultured to within 18 h of birth.

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3

McFarlane, James R., Carl D. Rudd, Lynda M. Foulds, Terry P. Fletcher e Marilyn B. Renfree. "Isolation and partial characterization of tammar wallaby luteinizing hormone and development of a radioimmunoassay". Reproduction, Fertility and Development 9, n. 4 (1997): 475. http://dx.doi.org/10.1071/r96089.

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Abstract (sommario):

Tammar wallaby (Macropus eugenii) luteinizing hormone (LH) was purified from pituitaries collected from wild and captive populations by salt sequential precipitation, ion exchange chromatography and gel filtration. Pituitary tissue (5 g) yielded 1·8 mg of purified wallaby luteinizing hormone (ME-14B), as verified by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). A heterologous radioimmunoassay has been developed for measurement of LH in plasma of marsupials using a monoclonal antibody raised against bovine LH (518B7). This assay system was able to measure basal LH concentrations in male and female tammars and detected a significant rise in plasma LH in response to oestradiol benzoate in female tammars and luteinizing hormone-releasing hormone (LHRH) in males. Parallel dose–response curves were also obtained from pituitary extracts from four other species of marsupial (brushtail possum, Trichosurus vulpecula; brown antechinus,Antechinus stuartii; kowari, Dasyuroides byrnei; and Eastern pygmy possum,Cercartetus nanus) in this assay, which suggests its usefulness in the measurement of LH in other marsupial species.

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4

Taggart, D. A., e P. D. Temple-Smith. "Transport and storage of spermatozoa in the female reproductive tract of the brown marsupial mouse, Antechinus stuartii (Dasyuridae)". Reproduction 93, n. 1 (1 settembre 1991): 97–110. http://dx.doi.org/10.1530/jrf.0.0930097.

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5

Yousef, A., e L. Selwood. "The type and differentiation of cells in vitro from unilaminar and bilaminar blastocysts of two marsupials, Antechinus stuartii and Sminthopsis macroura". Reproduction, Fertility and Development 8, n. 4 (1996): 743. http://dx.doi.org/10.1071/rd9960743.

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Abstract (sommario):

The type and ability to differentiate in vitro of cells found in blastocysts of two marsupials were examined. Thirteen unilaminar blastocysts on Day 7 to Day 12 of gestation and 24 bilaminar blastocysts on Day 16 and Day 18 of gestation were collected from 11 brown antechinus, Antechinus stuartii. A total of of 77 unilaminar blastocysts on Day 5 and Day 6 of gestation and a total of 61 bilaminar blastocysts on Day 6 and Day 7 of gestation were collected from 40 stripe-faced dunnarts, Sminthopsis macroura. Pluriblast and trophoblast cells, confined to separate hemispheres, were found in unilaminar and bilaminar blastocysts, establishing that the blastocyst epithelium was not a protoderm. Hypoblast cells were found only in bilaminar blastocysts. Pluriblast and hypoblast cells did not differentiate or proliferate in up to eight weeks in culture. A small number of trophoblast cells transformed to a multinucleate state but the remainder did not proliferate or differentiate further. The presence of murine leukaemia inhibitory factor or medium conditioned by exposure to marsupial fibroblast feeder layer was not required for the maintenance of an undifferentiated state. Differentiation, proliferation and attachment of cells were not influenced by the presence of the yolk mass or the egg coats in culture. The time taken for attachment of dissociated cells varied significantly between cultures with no substrate and with collagen, fibronectin or laminin (P = 0.001, ANOVA) but did not vary significantly between substrates. The substrates did not influence the state of differentiation of the cells.

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6

Selwood, L., e F. McCallum. "Relationship between longevity of spermatozoa after insemination and the percentage of normal embryos in brown marsupial mice (Antechinus stuartii)". Reproduction 79, n. 2 (1 marzo 1987): 495–503. http://dx.doi.org/10.1530/jrf.0.0790495.

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7

Taggart, D. A., e P. D. Temple-Smith. "Effects of breeding season and mating on total number and distribution of spermatozoa in the epididymis of the brown marsupial mouse, Antechinus stuartii". Reproduction 88, n. 1 (1 gennaio 1990): 81–91. http://dx.doi.org/10.1530/jrf.0.0880081.

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Tesi sul tema "Brown antechinus Reproduction"

1

McAllan, B. M. "The regulation of seasonal reproductive cycles in "Antechinus" : photoperiodic and pineal correlates /". Title page, contents and abstract only, 1987. http://web4.library.adelaide.edu.au/theses/09SM/09smm114.pdf.

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2

McAllan, B. M. (Bronwyn Marie). "The regulation of seasonal reproductive cycles in "Antechinus" : photoperiodic and pineal correlates". 1987. http://web4.library.adelaide.edu.au/theses/09SM/09smm114.pdf.

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