نتایج جستجو برای: cremaster muscle

تعداد نتایج: 328440  

Journal: :American journal of physiology. Heart and circulatory physiology 2001
M P Kunert R J Roman M Alonso-Galicia J R Falck J H Lombard

The purposes of this study were to 1) further evaluate the possible role that vasoconstrictor metabolites of cytochrome P-450 (CYP) omega-hydroxylase plays in O(2)-induced constriction of arterioles in the rat skeletal muscle microcirculation, 2) determine whether omega-hydroxylases are expressed in rat cremaster muscle, and 3) determine whether the enzyme is located in the parenchyma or the ar...

Journal: :Circulation research 1967
G Majno V Gilmore M Leventhal

A technique is described whereby it is possible to study the vessels of a striated muscle (the rat cremaster) in vivo. In the anesthetized rat, a part of the scrotal skin is excised; the cremaster muscle is exposed and studied by epi-illumination. To improve the optical conditions, a white reflecting surface is brought behind the cremaster through the inguinal canal. Twitching of the muscle may...

2011
Lauren Howitt Shaun L. Sandow T. Hilton Grayson Zoe E. Ellis Margaret J. Morris Timothy V. Murphy

Howitt L, Sandow SL, Grayson TH, Ellis ZE, Morris MJ, Murphy TV. Differential effects of diet-induced obesity on BKCa 1-subunit expression and function in rat skeletal muscle arterioles and small cerebral arteries. Am J Physiol Heart Circ Physiol 301: H29–H40, 2011. First published May 2, 2011; doi:10.1152/ajpheart.00134.2011.— Mechanisms underlying obesity-related vascular dysfunction are uncl...

Journal: :American journal of physiology. Heart and circulatory physiology 2011
Lauren Howitt Shaun L Sandow T Hilton Grayson Zoe E Ellis Margaret J Morris Timothy V Murphy

Mechanisms underlying obesity-related vascular dysfunction are unclear. This study examined the effect of diet-induced obesity on expression and function of large conductance Ca(2+)-activated potassium channel (BK(Ca)) in rat pressurized small resistance vessels with myogenic tone. Male Sprague-Dawley rats fed a cafeteria-style high fat diet (HFD; ∼30% energy from fat) for 16-20 wk were ∼30% he...

Journal: :Journal of vascular research 2012
Kimberley J Reeves Zoë L S Brookes Malcolm W R Reed Nicola J Brown

This study evaluated four fluorescent-protein conjugates to monitor microcirculatory variables using the murine cremaster muscle and determined acute and long-term responses to repeated administration of FITC-BSA [conjugated at the University of Sheffield (UoS)] within a dorsal microcirculatory chamber (DMC) in rats. For analysis of the cremaster muscle, male C3H/HeN mice were anaesthetized, th...

Journal: :American journal of physiology. Heart and circulatory physiology 2008
Steven M Kerfoot Graciela Andonegui Claudine S Bonder Lixin Liu

Stromal cell-derived factor-1 (SDF-1; CXCL12), a CXC chemokine, has been found to be involved in inflammation models in vivo and in cell adhesion, migration, and chemotaxis in vitro. This study aimed to determine whether exogenous SDF-1 induces leukocyte recruitment in mice. After systemic administration of SDF-1alpha, expression of the adhesion molecules P-selectin and VCAM-1 in mice was measu...

Journal: :Journal of applied physiology 2003
Randy Dix Teresa Orth Julie Allen John G Wood Norberto C Gonzalez

Systemic hypoxia, produced by lowering inspired Po2, induces a rapid inflammation in several microcirculations, including cremaster muscle. Mast cell activation is a necessary element of this response. Selective reduction of cremaster microvascular Po2 (PmO2) with normal systemic arterial Po2 (PaO2; cremaster hypoxia/systemic normoxia), however, does not elicit increased leukocyte-endothelial a...

Journal: :Journal of visualized experiments : JoVE 2011
Pooneh Bagher Steven S Segal

Throughout the body, the maintenance of homeostasis requires the constant supply of oxygen and nutrients concomitant with removal of metabolic by-products. This balance is achieved by the movement of blood through the microcirculation, which encompasses the smallest branches of the vascular supply throughout all tissues and organs. Arterioles branch from arteries to form networks that control t...

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