Arterial supply to the rat colon

Bacteria exhibit the ability to adhere to the apical surfaces of intestinal mucosal cells. These attachments either precede invasion of the intestinal wall by the bacteria with accompanying inflammation and degeneration of the mucosa or represent permanent anchoring sites where the bacteria never totally penetrate the mucosal cells.Endemic gram negative bacteria were found attached to the surface of mucosal cells lining the walls of crypts in the rat colon. The bacteria did not intrude deeper than 0.5 urn into the mucosal cells and no degenerative alterations were detectable in the mucosal lining.

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Ultrastructural Study of Rat Colon Following Psyllium Ingestion

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100119685 ◽

1985 ◽

Vol 43 ◽

pp. 580-581

Author(s):

F.G. Lightfoot ◽

L.E. Grau ◽

M.M. Cassidy ◽

G.R. Tadvalkar ◽

G.V. Vahouny

Keyword(s):

Electron Microscopy ◽

Morphological Changes ◽

Large Population ◽

Rat Colon ◽

Gastrointestinal Disorders ◽

Luminal Surface ◽

Fecal Material ◽

Transmission Electron ◽

Morphologic Analysis ◽

Irritable Bowel

Psyllium hydrophillic mucilloid is a natural gelling fiber consumed by a large population of our society. It is used as a bulk-producing laxative and in the treatment of gastrointestinal disorders such as “Irritable Bowel Syndrome”. The literature pertaining to the ultrastructural effects of this agent is sparse.This study documents morphological changes induced by psyllium. Animals fed a diet containing 2% psyllium for four weeks were subsequently sacrificed and processed for scanning and transmission electron microscopy. The colon contained fecal material combined with psyllium which conformed to the contour of the luminal surface. This mixture formed surface replicas of the intestinal mucosa. These replicas and their related colonic sites were processed for morphologic analysis.

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Innervation of endoneurial microvessels in human sural nerve

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100125002 ◽

1992 ◽

Vol 50 (1) ◽

pp. 920-921

Author(s):

John L. Beggs ◽

Peter C. Johnson ◽

Astrid G. Olafsen ◽

C. Jane Watkins

Keyword(s):

Blood Flow ◽

Blood Vessels ◽

Blood Supply ◽

Peripheral Nerves ◽

Sural Nerve ◽

Nerve Fibers ◽

Arterial Supply ◽

Autonomic Nerve ◽

Vasa Nervorum ◽

Endoneurial Blood Flow

The blood supply (vasa nervorum) to peripheral nerves is composed of an interconnected dual circulation. The endoneurium of nerve fascicles is maintained by the intrinsic circulation which is composed of microvessels primarily of capillary caliber. Transperineurial arterioles link the intrinsic circulation with the extrinsic arterial supply located in the epineurium. Blood flow in the vasa nervorum is neurogenically influenced (1,2). Although a recent hypothesis proposes that endoneurial blood flow is controlled by the action of autonomic nerve fibers associated with epineurial arterioles (2), our recent studies (3) show that in addition to epineurial arterioles other segments of the vasa nervorum are also innervated. In this study, we examine blood vessels of the endoneurium for possible innervation.

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Neurochemical phenotype and function of endomorphin-2-containing neurons in the myenteric plexus of the rat colon

Cell Biology International ◽

10.1042/cbi034s019a ◽

2010 ◽

Vol 34 (8) ◽

pp. S19-S19

Author(s):

Jun‑Ping Li ◽

Chang‑Jun Gao ◽

Bo‑Chang Lü ◽

Ting Zhang ◽

Jiang‑Bo Ma ◽

...

Keyword(s):

Myenteric Plexus ◽

Rat Colon ◽

And Function

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Ammonia inhibition of active electrogenic Cl− secretion in both human and rat colon: does a regulatory apical K+ conductance exist?

Gastroenterology ◽

10.1016/s0016-5085(01)82629-9 ◽

2001 ◽

Vol 120 (5) ◽

pp. A529-A529

Author(s):

J MAYOL ◽

T OBRIEN ◽

P ALAMAESTRANY ◽

J SONG ◽

M PRASAD ◽

...

Keyword(s):

Rat Colon ◽

Ammonia Inhibition ◽

Cl Secretion

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The Blood Supply to the Canine Palmar Metacarpal Sesamoid Bones

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1632433 ◽

1995 ◽

Vol 08 (02) ◽

pp. 76-81 ◽

Cited By ~ 1

Author(s):

M. A. Cake ◽

R. A. Read

Keyword(s):

Blood Supply ◽

Vascular Supply ◽

Arterial Supply ◽

Sesamoid Bones ◽

Vascular Compromise

SummaryEleven canine forelimbs were examined using either gross dissection or a modified Spalteholz technique to investigate the blood supply of the palmar metacarpal sesamoid bones. In addition, the sesamoid bones, from two prepared skeletons, were examined for the presence of vascular foramina. Multiple vascular foramina were observed over the sesamoid surface. The most consistent elements of the arterial supply were proximal vessels supplying the axial and dorsal abaxial sides of the bone. In addition, palmar and distal sources often made contributions to the blood supply. Various minor or occasional sources were noted. This study demonstrates that the palmar metacarpal sesamoid bones of the dog have an abundant but highly variable vascular supply.The blood supply of the canine palmar metacarpal sesamoid bones was examined, using several methods, in order to evaluate the possible involvement of vascular compromise in sesamoid disease. It was found that the sesamoid bones have an abundant blood supply which is presumably resistant to disruption.

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