transitional epithelium

移行上皮

WordNet

1. make or undergo a transition (from one state or system to another); "The airline transitioned to more fuel-efficient jets"; "The adagio transitioned into an allegro"
2. a musical passage moving from one key to another (同)modulation
3. a change from one place or state or subject or stage to another
4. a passage that connects a topic to one that follows
5. cause to convert or undergo a transition; "the company had to transition the old practices to modern technology"
6. of or relating to or characterized by transition; "adolescence is a transitional stage between childhood and adulthood"
7. membranous tissue covering internal organs and other internal surfaces of the body (同)epithelial_tissue

PrepTutorEJDIC

1. (…から…へ)移り変わること,変遷;(…から…への)過渡期《+from+名+to+名》
2. 移り変わりの,過渡期の
3. 上皮[組織](生物体の表皮・血管内壁など)

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/05/14 18:12:11」(JST)

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Transitional epithelium
Transitional epithelium of the urinary bladder. Note the rounded surface of the apical cells -- a distinguishing characteristic of this type of epithelium.
Transverse section of ureter.
Code	TH H2.00.02.0.02033

This article is one of a series on
Epithelia
Squamous epithelial cell
Simple Stratified
Columnar epithelial cell
Simple Stratified Pseudostratified
Cuboidal epithelial cell
Simple Stratified
Specialised epithelia
Respiratory Intestinal Transitional Germinal female male
Other
Table of epithelia of human organs

Transitional epithelium (also known as urothelium) is a type of tissue consisting of multiple layers of epithelial cells which can contract and expand. These cells, part of the epithelium, are found in the urinary bladder, in the ureters, and in the superior urethra and gland ducts of the prostate.

Appearance

These cells appear to be cuboidal with a domed apex when the organ or the tube in which they reside is not stretched. When the bladder fills, the tissue actually compresses and the cells become stretched, and they appear to be flat, irregular, and squamous. Middle layer pear shaped, basal layer has ability to stretch.

Functions

The transitional epithelium cells accommodate fluctuation of volume of the liquid in an organ or tube, such as the urinary bladder, and protect against the caustic effects of urine. Location : Starting from renal pelvis in kidneys to ureters → to urinary bladder → and finally to proximal part of urethra. (Note that the distal part of the urethra becomes non-keratinized stratified squamous epithelium in females, and in males it becomes pseudo-stratified columnar epithelium briefly before becoming non-keratinized stratified squamous epithelium.)

Surfaces

The free surface of the tissue (the part that faces outward into the organ or tube) is called the apical surface or free surface.

The part that lines the bottom of the tissue is called the basement membrane.

Gallery

• Types of epithelium

• Schematic view of transitional epithelium

• Vertical section of bladder wall.

See also

• Urothelium

External links

• Histology at utmb.edu
• Histology at OU 36_02 - "ureter"
• Histology at OU 37_02 - "urinary bladder"
• Anatomy Atlases - Microscopic Anatomy, plate 02.24 - "Transitional Epithelium", Ureter
• Histology at KUMC urinary-renal16 "ureter"

UpToDate Contents

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English Journal

• Subchronic urinary bladder toxicity evaluation of N-Nitrosodiphenylamine in Fischer 344 rats.

• Dodd DE, Pluta LJ, Sochaski MA, Funk KA, Thomas RS.SourceThe Hamner Institutes for Health Sciences, Research Triangle Park, NC, USA.
• Journal of applied toxicology : JAT.J Appl Toxicol.2012 Aug 14. doi: 10.1002/jat.2798. [Epub ahead of print]
• Female Fischer 344 (F344) rats were exposed to N-nitrosodiphenylamine (NDPA) by dietary feed at concentrations of 0, 250, 1000, 2000, 3000 or 4000 ppm for 5 days, 2, 4 and 13 weeks duration. Endpoints evaluated included clinical observations, body weights, urinary bladder weights, blood NDPA, gross
• PMID 22893110

• Urinary tract effects after multifocal nonthermal irreversible electroporation of the kidney: acute and chronic monitoring by magnetic resonance imaging, intravenous urography and urinary cytology.

• Wendler JJ, Pech M, Porsch M, Janitzky A, Fischbach F, Buhtz P, Vogler K, Hühne S, Borucki K, Strang C, Mahnkopf D, Ricke J, Liehr UB.SourceDepartment of Urology, University of Magdeburg, 39120, Magdeburg, Germany, johann.wendler@med.ovgu.de.
• Cardiovascular and interventional radiology.Cardiovasc Intervent Radiol.2012 Aug;35(4):921-6. Epub 2011 Aug 26.
• PURPOSE: The nonthermal irreversible electroporation (NTIRE) is a novel potential ablation modality for renal masses. The aim of this study was the first evaluation of NTIRE's effects on the renal urine-collecting system using intravenous urography (IVU) and urinary cytology in addition to histology
• PMID 21870207

Japanese Journal

• Molecular Pathology of Murine Ureteritis Causing Obstructive Uropathy with Hydronephrosis

• Ichii Osamu,Otsuka Saori,Namiki Yuka,Hashimoto Yoshiharu,Kon Yasuhiro
• PLoS One 6(11), e27783, 2011-11-16
• … Histopathologically, this hydronephrosis was caused by stenosis of the proximal ureter, which showed fibrosis and papillary malformations of the proliferative epithelium with infiltrations of B-cell-dominated lymphocytes. … Eosinophilic crystals were characteristically observed in the lumen of the ureter and the cytoplasm of large granular leukocytes, eosinophils, and transitional epithelial cells. …
• NAID 120003660597

• Relationship between Distribution of Tapetum Fibrosum and Retinal Pigment Epithelium in the Sheep Eye

• SHINOZAKI Aya,HOSAKA Yoshinao,IMAGAWA Tomohiro,UEHARA Masato
• Journal of Veterinary Medical Science advpub(0), 0911180047, 2010
• … There have been few studies on tapetal distribution and its relationship with degree of pigmentation in the retinal pigment epithelium (RPE). … The pigmentation of the RPE was divided into three types, nonpigmented, transitional, and pigmented areas. …
• NAID 130000134531

Related Links

• Transitional epithelium - Wikipedia, the free encyclopedia

Transitional epithelium (also known as urothelium) is a type of tissue consisting of multiple layers of epithelial cells which can contract and expand. These cells, part of the epithelium, are found in the urinary bladder, in the ureters, and in the ...

• transitional epithelium - Medical Dictionary - The Free Dictionary

epithelium /ep·i·the·li·um/ (-the´le-um) pl. epithe´lia [Gr.] the cellular covering of internal and external body surfaces, including the lining of vessels and small cavities. It consists of cells joined by small amounts of cementing substances and is ...

Related Pictures

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★リンクテーブル★

リンク元	「上皮」「移行上皮」「transitional epithelia」
関連記事	「transition」「transitional」

「上皮」

　　[★]

英

epithelium, (pl.)epithelia

関

上皮組織、消化器系#上皮の移行、呼吸器の上皮の移行

上皮の分類

• 単層扁平上皮 simple squamous epithelium
• 単層立方上皮 simple cuboidal epithelium
• 単層円柱上皮 simple columnar epithelium
• 多列上皮 pseudostratified epithelium
• 重層扁平上皮 stratified squamous epithelium
• 重層立方上皮 stratified cuboidal epithelium
• 重層円柱上皮 stratified columnar epithelium
• 移行上皮 transitional epithelium

「移行上皮」

　　[★]

英

transitional epithelium

ラ

epithelium transitionale

関

上皮

• 尿路の内腔を覆う上皮
• 腎盂、腎杯、尿管、膀胱、尿道の一部　←　中胚葉の尿管芽に由来。　⇔　立方上皮：集合管　←　これも中胚葉の尿管芽に由来。

「transitional epithelia」

　　[★]

移行上皮

関

transitional epithelium

「transition」

　　[★]

• n.

• (相の)転移、移行、推移、移行期、遷移、変遷、トランジション

関

dissemination、entry、immigration、metastases、metastasis、metastasize、shift、succession、transfer、transference、transit、transition state、transitional、transitional period、translocation、travel

　 　 　 　 　 　

「transitional」

　　[★]

• adj.

• 移行性の、移行型の、移行期の、移行の、遷移の

関

entry、immigration、interphyletic、shift、succession、transfer、transit、transition、transition state、transitional period、translocation、travel