WordNet

send by special mail that goes through diplomatic channels
an enclosed space; "the trapped miners found a pocket of air" (同)sac, sack, pocket
a small or medium size container for holding or carrying things
(anatomy) saclike structure in any of various animals (as a marsupial or gopher or pelican) (同)pocket
put into a small bag
having a pouch

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(革製の)小袋(たばこ入れ・さいふなど);郵便袋;(兵隊の)弾薬袋 / (カンガルーなどの)腹袋 / (動物の)ほお袋 / (目の下の)たるみ

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/02/20 11:41:09」(JST)

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Rathke's pouch

Sketches in profile of two stages in the development of the human digestive tube.
Latin	fovea adenohypophysialis
Gray's	subject #275 1277
Carnegie stage	10
Gives rise to	anterior pituitary

In embryogenesis, Rathke's pouch is a depression in the roof of the developing mouth in front of the buccopharyngeal membrane. It gives rise to the anterior pituitary (adenohypophysis), a part of the endocrine system.

Development

The pouch eventually loses its connection with the pharynx giving rise to the anterior pituitary. The anterior wall of Rathke's pouch proliferates, filling most of the pouch to form pars distalis and pars tuberalis. The posterior wall forms pars intermedia.

In some organisms, the proliferating anterior wall does not fully occupy Rathke's pouch, leaving a remnant (Rathke's cleft) between the pars distalis and pars intermedia.

Clinical significance

Rathke's pouch may develop benign cysts. Craniopharyngioma is a neoplasm which can arise from the epithelium within the cleft.

Eponym

It is named for Martin Rathke.^[1]^[2]

References

^ synd/3564 at Who Named It?
^ M. H. Rathke. Entwicklungsgeschichte der Natter (Coluber natrix). Königsberg, Bornträger, 1839.

External links

Embryology at UNSW wwwhuman/hipower/HumB/b2l
BU Histology Learning System: 14101loa
Diagram at cushings-help.com
http://www.lib.mcg.edu/edu/eshuphysio/program/section5/5ch2/s5ch2_2.htm

This developmental biology article is a stub. You can help Wikipedia by expanding it.

UpToDate Contents

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English Journal

Suprasellar Rathke cleft cysts: clinical presentation and treatment outcomes.

Potts MB, Jahangiri A, Lamborn KR, Blevins LS, Kunwar S, Aghi MK.SourceDepartment of Neurosurgery and California Center for Pituitary Disorders, University of California, San Francisco, California 94143-0112, USA.
Neurosurgery.Neurosurgery.2011 Nov;69(5):1058-68; discussion 1068-7.
BACKGROUND: Rathke cleft cysts (RCCs), benign remnants of the Rathke pouch typically arising in the sella, sometimes have suprasellar extension. Purely suprasellar RCCs are rarely reported.OBJECTIVE: To compare the presentations, surgical outcomes, and pathology of purely suprasellar RCCs and sellar
PMID 21673610

Japanese Journal

Immunohistochemical Localization of the Water Channels AQP4 and AQP5 in the Rat Pituitary Gland

Matsuzaki Toshiyuki,Inahata Yuki,Sawai Nobuhiko,Yang Chun-Ying,Kobayashi Makito,Takata Kuniaki,Ozawa Hitoshi
ACTA HISTOCHEMICA ET CYTOCHEMICA 44(6), 259-266, 2011
… AQP5 was found to be localized at the apical membrane in some marginal layer cells surrounding the Rathke's residual pouch, in which AQP4 was observed to be localized on the basolateral membranes. …
NAID 130001258488

Immunohistochemical Localization of Aquaporin-4 in the Rat Pituitary Gland

KUWAHARA Sachi,MAEDA Seishi,ARDILES Yona,JUN Jin Gon,TANAKA Koichi,HAYAKAWA Tetsu,SEKI Makoto
日本獣醫學会会誌 72(10), 1307-1312, 2010
… In the adenohypophysis, co-labeling for S-100 protein indicated that folliculo-stellate (FS) cells and marginal layer cells in Rathke's residual pouch have extensive labeling for AQP4. …
NAID 130000264197

Immunohistochemical Observation of Co-expression of E- and N-cadherins in Rat Organogenesis

Sakamoto Atsushi,Murata Kazumoto,Suzuki Hideto,Yatabe Megumi,Kikuchi Motoshi
ACTA HISTOCHEMICA ET CYTOCHEMICA 41(5), 143-147, 2008
… After embryonic day 10, unique co-expression of E- and N-cadherin was observed in primordia, such as the bulbus cordis, otic pit, notochord, and Rathke's pouch. …
NAID 130000070542