A comparison between the physiological and histochemical characterisation of urethral striated muscle in the guinea pig

1984 ◽  
Vol 400 (1) ◽  
pp. 40-43 ◽  
Author(s):  
I. Whitmore ◽  
J. A. Gosling ◽  
S. A. Gilpin
Keyword(s):  
Guinea Pig ◽  
Striated Muscle ◽  
Urethral Striated Muscle

scholarly journals DEMONSTRATION OF PEROXIDASE ACTIVITY IN TISSUE SECTIONS

1964 ◽  
Vol 12 (7) ◽  
pp. 538-544 ◽  
Author(s):  
MAX WACHSTEIN ◽  
ELIZABETH MEISEL
Keyword(s):  
Salivary Gland ◽  
Mast Cells ◽  
Guinea Pig ◽  
Peroxidase Activity ◽  
Striated Muscle ◽  
Acinar Cells ◽  
Hair Follicles ◽  
Tissue Sections ◽  
Pig Skin ◽  
Mammalian Tissues

By using an improved benzidine technique, peroxidase activity can be demonstrated in various locations in mammalian tissues. A relatively formalin resistant enzyme is found in hemoglobin and is also associated with mitochondria of striated muscle and heart. A somewhat less formalin resistant peroxidase occurs in the granules of myeloid and mast cells. A relatively formalin sensitive peroxidase is present in a number of additional locations, e.g. the acinar cells in thyroid and salivary gland, the medulla of the kidney, in hair follicles of the guinea pig skin and Kupffer cells of the liver.

scholarly journals Morphological changes in the fast vs slow fiber profiles of the urethras of diabetic pregnant rats

2011 ◽  
Vol 25 (1) ◽  
pp. 9 ◽  
Author(s):  
Gabriela Marini ◽  
Angélica M. Pascon Barbosa ◽  
Débora C. Damasceno ◽  
Selma M. Michelin Matheus ◽  
Rodrigo De Aquino Castro ◽  
...  
Keyword(s):  
Striated Muscle ◽  
Morphological Changes ◽  
Fiber Type ◽  
Normal Function ◽  
Striated Muscles ◽  
Pregnant Rats ◽  
Morphological Alterations ◽  
Female Wistar Rats ◽  
Urethral Striated Muscle ◽  
Diabetes And Pregnancy

<em>Background</em>. This study was undertaken to test the hypothesis that diabetes and pregnancy detrimentally affect the normal function of urethral striated muscles in rats, providing a model for additional studies related to urinary incontinence. The aim of this study was to evaluate morphological alterations in the urethral striated muscles of diabetic pregnant rats. <em>Design and methods. </em>Twenty female Wistar rats were distributed into four experimental groups of five rats as follows: virgin, pregnant, diabetic virgin, and diabetic pregnant. Diabetes was induced using streptozotocin administration (40 mg/kg i.v.). The rats were lethally anesthetized, and the urethra and vagina were extracted as a unit. Cryostat sections (6 µm thick) were cut and stained with hematoxylin-eosin, and immunohistochemical procedures were performed and subjected to morphological and semi quantitative analysis. <em>Results</em>. The urethral striated muscle from the diabetic pregnant rats presented with the following variations: thinning and atrophy, disorganization and disruption associated with the colocalization of fast and slow fibers and a steady decrease in the proportion of fast <em>vs</em> slow fibers. <em>Conclusion</em>. Diabetes and pregnancy impair the urethral striated muscle and alter its fiber type distribution.

Morphological Studies of Fiber Types of Striated Muscle Fibers of the Cremaster in the Guinea Pig

1981 ◽  
Vol 111 (3) ◽  
pp. 240-246 ◽  
Author(s):  
Jes&uacute;s G. Ninomiya ◽  
Olga M. Echeverr&iacute;a ◽  
Gerardo H. V&aacute;zquez-Nin
Keyword(s):  
Guinea Pig ◽  
Striated Muscle ◽  
Muscle Fibers ◽  
Fiber Types ◽  
Morphological Studies ◽  
Striated Muscle Fibers

scholarly journals Duloxetine in the Treatment of Stress Urinary Incontinence

2005 ◽  
Vol 1 (3) ◽  
pp. 345-358 ◽  
Author(s):  
Martin C Michel ◽  
Matthias Oelke
Keyword(s):  
Urinary Incontinence ◽  
Stress Urinary Incontinence ◽  
Adverse Events ◽  
Striated Muscle ◽  
Bladder Capacity ◽  
Efficacy And Safety ◽  
Cytochrome P450 1A2 ◽  
Serious Adverse Events ◽  
Double Blind ◽  
Urethral Striated Muscle

This manuscript reviews the pharmacodynamics and pharmacokinetics of duloxetine and its efficacy and safety in women with stress urinary incontinence. Duloxetine is a selective inhibitor of neuronal serotonin and norepinephrine uptake which increases urethral striated muscle activity and bladder capacity. Duloxetine is readily absorbed and extensively metabolized; cytochrome P450 1A2 (CYP1A2) inhibiting drugs can markedly increase duloxetine exposure. The clinical efficacy of duloxetine has consistently been demonstrated in several randomized, double-blind studies in women with moderate-to-severe stress urinary incontinence, but the additional benefit relative to placebo was moderate. Duloxetine treatment is frequently associated with adverse events such as nausea, dry mouth, fatigue, insomnia and constipation, but serious adverse events are rare. Therefore, duloxetine appears suitable for the treatment of stress urinary incontinence.

scholarly journals Conduction block of mammalian myelinated nerve by local cooling to 15–30°C after a brief heating

2016 ◽  
Vol 115 (3) ◽  
pp. 1436-1445 ◽  
Author(s):  
Zhaocun Zhang ◽  
Timothy D. Lyon ◽  
Brian T. Kadow ◽  
Bing Shen ◽  
Jicheng Wang ◽  
...  
Keyword(s):  
Striated Muscle ◽  
Conduction Block ◽  
Local Cooling ◽  
Myelinated Nerve ◽  
Axonal Conduction ◽  
Novel Method ◽  
Myelinated Nerves ◽  
Block Temperature ◽  
Scientific Questions ◽  
Urethral Striated Muscle

This study aimed at understanding thermal effects on nerve conduction and developing new methods to produce a reversible thermal block of axonal conduction in mammalian myelinated nerves. In 13 cats under α-chloralose anesthesia, conduction block of pudendal nerves ( n = 20) by cooling (5–30°C) or heating (42–54°C) a small segment (9 mm) of the nerve was monitored by the urethral striated muscle contractions and increases in intraurethral pressure induced by intermittent (5 s on and 20 s off) electrical stimulation (50 Hz, 0.2 ms) of the nerve. Cold block was observed at 5–15°C while heat block occurred at 50–54°C. A complete cold block up to 10 min was fully reversible, but a complete heat block was only reversible when the heating duration was less than 1.3 ± 0.1 min. A brief (<1 min) reversible complete heat block at 50–54°C or 15 min of nonblock mild heating at 46–48°C significantly increased the cold block temperature to 15–30°C. The effect of heating on cold block fully reversed within ∼40 min. This study discovered a novel method to block mammalian myelinated nerves at 15–30°C, providing the possibility to develop an implantable device to block axonal conduction and treat many chronic disorders. The effect of heating on cold block is of considerable interest because it raises many basic scientific questions that may help reveal the mechanisms underlying cold or heat block of axonal conduction.

Ultrastructural arrangement and distribution of smooth muscle and striated muscle fibers in the cremaster of the guinea-pig

1976 ◽  
Vol 186 (1) ◽  
pp. 127-132 ◽  
Author(s):  
Jesus G. Ninomiya ◽  
Horacio Merchant ◽  
Francisco Alonso-Deflorida
Keyword(s):  
Smooth Muscle ◽  
Guinea Pig ◽  
Striated Muscle ◽  
Muscle Fibers ◽  
Striated Muscle Fibers
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