Talk:Rat Development - Revision history

Z8600021 at 18:17, 11 Mayıs 2020

2020-05-11T18:17:46Z

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 {{Talk Page}}
-[http://embryology.med.unsw.edu.au/OtherEmb/Rat.htm original Rat page]
+{{#pmid:32352981}}
 ==2019==

Z8600021 at 19:09, 29 July 2019

2019-07-29T19:09:36Z

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 ==2019==
 ===Ultrasonographic evaluation of fetal development in the rat===
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 Fetometry; Organogenesis; Pregnancy; Rat; Twins; Ultrasound
 PMID: 30388467 DOI: 10.1016/j.theriogenology.2018.10.017
 ==2013==

Z8600021 at 21:29, 20 Ocak 2019

2019-01-20T21:29:29Z

← Older revision		Revision as of 07:29, 21 Ocak 2019
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	[http://embryology.med.unsw.edu.au/OtherEmb/Rat.htm original Rat page]		[http://embryology.med.unsw.edu.au/OtherEmb/Rat.htm original Rat page]

	==~~10 Most Recent Papers~~==		==2019==
	~~{{10 Most Recent}}~~		===Ultrasonographic evaluation of fetal development in the rat===

	~~===Rat Development===~~		Theriogenology. 2019 Feb;125:24-29. doi: 10.1016/j.theriogenology.2018.10.017. Epub 2018 Oct 21.
	~~<pubmed limit=5>Rat Development<~~/~~pubmed>~~

	~~===~~Rat ~~Embryology===~~		Kirberger RM1, Bester EG2, Schulman ML3, Janse van Rensburg I4, Hartman MJ5.
	~~<pubmed limit=5>Rat Embryology<~~/~~pubmed>~~
			Abstract

			The study objectives were to measure gestational sac (GS) diameter and crown-to-rump (CR) length in conscious pregnant rats and to determine the chronological ultrasonographic appearance of heart beat and fetal organogenesis. The study formed part of a unilateral surgical salpingectomy trial with 16 female Sprague-Dawley rats (Rattus norvegicus). Ten rats were operated on while the other six served as controls. After surgery all were mated at 8-10 weeks of age. Gestational length was taken as 22 days. Rats were manually restrained for abdominal ultrasonography and were scanned daily from day 7 until day 19 or 20 post-mating followed by immediate euthanasia. Measurements' were taken from two GSs per rat. The presence of several early GSs in a row were described as a "string of pearls". As a fetus developed features of organogenesis were recorded. There was no significant difference in GS diameters and CR length between the test and control groups. Mean GS diameters ranged from 2.9 mm (day 7) to 18.1 mm (day 20). A string of pearls was seen on days 8-11. The CR length ranged from 1.6 mm (day 11) to 26.4 mm (day 20). A heart beat was first seen on day 11 and the echogenic vertebral column at day 14-15. From day 16, ribs, feet and the isoechoic lungs and liver were seen. The lungs became hyperechoic to the liver from day 18-19. The tail and mandible were visible on day 18 and the aorta and caudal vena cava were seen on day 19, as well as an occasional bladder. These measurements and staged in utero ultrasonographic appearance of various organ and skeletal structures will assist in a reasonably accurate prediction of the day of impending parturition by laboratory personnel and researchers.

			Copyright © 2018 Elsevier Inc. All rights reserved.

			KEYWORDS:
			Fetometry; Organogenesis; Pregnancy; Rat; Twins; Ultrasound
			PMID: 30388467 DOI: 10.1016/j.theriogenology.2018.10.017

	==2013==		==2013==

Z8600021 at 11:19, 9 December 2013

2013-12-09T11:19:47Z

← Older revision		Revision as of 21:19, 9 December 2013
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	==2013==		==2013==

			===Develop to term rat oocytes injected with heat-dried sperm heads===
			PLoS One. 2013 Nov 4;8(11):e78260. doi: 10.1371/journal.pone.0078260.

			Lee KB, Park KE, Kwon IK, Tripurani SK, Kim KJ, Lee JH, Niwa K, Kim MK.
			Source
			The Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.

			Abstract

			This study investigated the development of rat oocytes in vitro and in vivo following intracytoplasmic injection of heads from spermatozoa heat-dried at 50°C for 8 h and stored at 4°C in different gas phases. Sperm membrane and chromosome are damaged by the process of heat-drying. Oocyte activation and cleavage of oocytes were worse in oocytes injected with spermatozoa heat-dried and stored for 1 week than unheated, fresh spermatozoa, but in heat-dried spermatozoa, there were no differences in these abilities of oocytes between the samples stored in nitrogen gas and in air. The oocytes injected with heat-dried spermatozoa stored for 1 week could develop to the morula and blastocyst stages without difference between the samples stored in nitrogen gas and in air after artificial stimulation. Cleavage of oocytes and development of cleaved embryos were higher when heat-dried spermatozoa were stored for 3 and 6 months in nitrogen gas than in air. However, the ability of injected oocytes to develop to the morula and blastocyst stages was not inhibited even when heat-dried spermatozoa stored in both atmosphere conditions for as long as 6 months were used. When 2-cell embryos derived from oocytes injected with heads from spermatozoa heat-dried and stored for 1 week and 1 month were transferred, each 1 of 4 recipients was conceived, and the conceived recipients delivered 1 live young each. These results demonstrate that rat oocytes can be fertilized with heat-dried spermatozoa and that the fertilized oocytes can develop to term.

			PMID 24223784

	==2012==		==2012==

Z8600021 at 22:54, 13 Haziran 2013

2013-06-13T22:54:06Z

← Older revision		Revision as of 08:54, 14 Haziran 2013
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	Physiological characteristics and logistical considerations of the three most used animal models for nutritional intervention in early life		Physiological characteristics and logistical considerations of the three most used animal models for nutritional intervention in early life

	http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3415261/		<pubmed>22899949</pubmed>\| [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC341526 PMC3415261] \| [http://www.hindawi.com/journals/cdi/2012/537310 Clin Dev Immunol.]
			{{Mouse Rat Pig table}}
	{\|		{\|
	\|-		\|-
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	\|}		\|}

			Copyright © 2012 Francisco J. Pérez-Cano et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

	===Cross-Species Genome Wide Expression Analysis during Pluripotent Cell Determination in Mouse and Rat Preimplantation Embryos===		===Cross-Species Genome Wide Expression Analysis during Pluripotent Cell Determination in Mouse and Rat Preimplantation Embryos===

Z8600021 at 22:50, 13 Haziran 2013

2013-06-13T22:50:05Z

← Older revision		Revision as of 08:50, 14 Haziran 2013
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	\|-		\|-
	\| Placenta type		\| Placenta type
	\| Discoidal, hemoendothelial choroidea~~, decidual~~		\| Discoidal, decidual<br>hemoendothelial choroidea
	\| Discoidal, hemoendothelial choroidea~~, decidual~~		\| Discoidal, decidual<br>hemoendothelial choroidea
	\| Epitheliochorial		\| Epitheliochorial
	\|-		\|-

Z8600021 at 22:48, 13 Haziran 2013

2013-06-13T22:48:50Z

← Older revision		Revision as of 08:48, 14 Haziran 2013
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	! Mouse		! Mouse
	! Rat		! Rat
	!Pig		! Pig
	\|-		\|-
	\| Pregnancy period (days)		\| Pregnancy period (days)
	\| ~~18–21~~		\| 18 – 21
	\| ~~21–23~~		\| 21 – 23
	\| ~~110–118~~		\| 110 – 118
	\|-		\|-
	\| Placenta type		\| Placenta type
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	\|-		\|-
	\| Litter size		\| Litter size
	\| ~~6–12~~		\| 6 – 12
	\| ~~6–15~~		\| 6 – 15
	\| ~~11–16~~		\| 11 – 16
	\|-		\|-
	\| Birth weight (g)		\| Birth weight (g)
	\| 0.~~5–1~~.5		\| 0.5 – 1.5
	\| ~~3–5~~		\| 3 – 5
	\| ~~900–1600~~		\| 900 – 1600
	\|-		\|-
	\| Weaning weight male/female (g)		\| Weaning weight male/female (g)
	\| ~~18–25~~/~~16–25~~		\| 18 – 25/16 – 25
	\| ~~55–90~~/~~45–80~~		\| 55 – 90/45 – 80
	\| ~~6000–8000~~		\| 6000 – 8000
	\|-		\|-
	\| Suckling period (days)		\| Suckling period (days)
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	\| 10		\| 10
	\| 12		\| 12
	\| ~~12–15~~		\| 12 – 15
	\|-		\|-
	\| Puberty male/female (wk)		\| Puberty male/female (week)
	\| ~~4–6~~/5		\| 4 – 6/5
	\| 6/~~6–8~~		\| 6/6 – 8
	\| 20–28		\| 20–28
	\|-		\|-
	\| Life expectancy (years)		\| Life expectancy (years)
	\| 1-2		\| 1 - 2
	\| 2-3		\| 2 - 3
	\| ~~14–18~~		\| 14 – 18
	\|}		\|}

Z8600021 at 22:46, 13 Haziran 2013

2013-06-13T22:46:26Z

← Older revision		Revision as of 08:46, 14 Haziran 2013
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	==2013==		==2013==


			==2012==

	Physiological characteristics and logistical considerations of the three most used animal models for nutritional intervention in early life		Physiological characteristics and logistical considerations of the three most used animal models for nutritional intervention in early life
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	~~==2012==~~
	===Cross-Species Genome Wide Expression Analysis during Pluripotent Cell Determination in Mouse and Rat Preimplantation Embryos===		===Cross-Species Genome Wide Expression Analysis during Pluripotent Cell Determination in Mouse and Rat Preimplantation Embryos===

Z8600021 at 22:45, 13 Haziran 2013

2013-06-13T22:45:38Z

← Older revision		Revision as of 08:45, 14 Haziran 2013
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	==2013==		==2013==

			Physiological characteristics and logistical considerations of the three most used animal models for nutritional intervention in early life

			http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3415261/

			{\|
			\|-
			!
			! Mouse
			! Rat
			!Pig
			\|-
			\| Pregnancy period (days)
			\| 18–21
			\| 21–23
			\| 110–118
			\|-
			\| Placenta type
			\| Discoidal, hemoendothelial choroidea, decidual
			\| Discoidal, hemoendothelial choroidea, decidual
			\| Epitheliochorial
			\|-
			\| Litter size
			\| 6–12
			\| 6–15
			\| 11–16
			\|-
			\| Birth weight (g)
			\| 0.5–1.5
			\| 3–5
			\| 900–1600
			\|-
			\| Weaning weight male/female (g)
			\| 18–25/16–25
			\| 55–90/45–80
			\| 6000–8000
			\|-
			\| Suckling period (days)
			\| 21–28
			\| 21
			\| 28–49
			\|-
			\| Solid diet beginning (days)
			\| 10
			\| 12
			\| 12–15
			\|-
			\| Puberty male/female (wk)
			\| 4–6/5
			\| 6/6–8
			\| 20–28
			\|-
			\| Life expectancy (years)
			\| 1-2
			\| 2-3
			\| 14–18
			\|}




	==2012==		==2012==

Z8600021 at 20:45, 24 December 2012

2012-12-24T20:45:02Z

← Older revision		Revision as of 06:45, 25 December 2012
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	[http://embryology.med.unsw.edu.au/OtherEmb/Rat.htm original Rat page]		[http://embryology.med.unsw.edu.au/OtherEmb/Rat.htm original Rat page]

	==10 Most Recent==		==10 Most Recent Papers==
	{{10 Most Recent}}		{{10 Most Recent}}
	~~===Rat Embryo===~~
	~~<pubmed limit=10>Rat+Embryo</pubmed>~~

			===Rat Development===
			<pubmed limit=5>Rat Development</pubmed>

			===Rat Embryology===
			<pubmed limit=5>Rat Embryology</pubmed>

			==2013==

	==2012==		==2012==