Bladder, urinary

Theory and Equipment. Many diseases of the human body can be identified by visual appearance. Tumors in the upper gastrointestinal (GI) tract, for example, possess a characteristic salmon pink color (3). The presence of such a color can be an indication of disease. Endoscopy is the medical imaging tool used to detect such colors in the inside of hoUow internal organs such as the rectum, urethra, urinary bladder, stomach, colon, etc. An endoscope is the instmment used to perform endoscopy. Endoscopic imaging involves the production of a tme color picture of the inside of the human body using lenses and either hoUow pipes, a fiber optic bundle, or a smaU CCD camera. AU three use a large field-of-view, sometimes referred to as a fish eye, lens to aUow a 180° field of view. 

Three tachykinin GPCRs, NK, NK, and NK, have been identified and cloned. AH are coupled to phosphatidjhnositol hydrolysis. The NK receptor is selective for substance P (SP) and is relatively abundant in the brain, spinal cord, and peripheral tissues. The NK receptor is selective for NKA and is present in the gastrointestinal tract, urinary bladder, and adrenal gland but is low or absent in the CNS. The NIC receptor is selective for NKB and is present in low amounts in the gastrointestinal tract and urinary bladder, but is abundant in some areas of the CNS, ie, the spinal dorsal bom, soUtary nucleus, and laminae IV and V of the cortex with moderate amounts in the interpeduncular nucleus. Mismatches in the distribution of the tachykinins and tachykinin receptors suggest the possibility of additional tachykinin receptor subtypes. 

In general, activation of alpha-1 adrenergic receptors causes a contraction of smooth muscle and of blood vessels, pilomotor muscles, dilator pupillae, vas deferens, nictitating membrane, splenic capsule, and sphincters of the intestine and urinary bladder and of the bile duct. An exception is the relaxation of the smooth muscle of the intestine. Prazosin [19216-56-9] indoramin [26844-12-2] and WB-4101 are relatively selective antagonists of these receptors. 

TABLE 5.8(b) Case-control Studies of Urinary Bladder Cancer annong Workers in the Printing Industry ... 

In sympathetically innervated tissues, such as vas deferens or blood vessels, ATP produces fast responses mediated by P2X receptors followed by a slower component mediated by G protein-coupled a-adrenoceptors (Fig. 2) NPY usually acts as a pre-or postjunctional modulator of the release and/or action of NA and ATP. Similarly, for parasympathetic nerves supplying the urinary bladder, ATP provokes a fast, short-lasting twitch response via P2X receptors, whereas the slower component is mediated by G... 

Summation The overall response is the arithmetic sum of the contribution brought by each receptor (e.g., NKX and NK2). Capsaicin-induced contraction of rat isolated urinary bladder, electrical field stimulation (EFS)-induced nonadrenergic, noncholinergic contraction of the isolated guinea pig bronchus or renal pelvis when SP metabolism is blocked by peptidase inhibitors are all examples of summation. Both NK and NK2r antagonists are required to abolish such kind of response, but each antagonist substantially reduces the response... 

Specialization Each receptor contributes to morphologically (e.g., phasic vs. tonic) or temporally (early vs. late) distinct components of the overall response. This is the case of prolonged EFS-induced nonadrenergic, noncholinergic contraction the guinea pig colon or rat urinary bladder, where the fast and late components of the contraction are mediated by NKxror NK2r, respectively... 

Smooth muscle cells constitute the most diversified class of muscle cells. They are the parenchymal cells of many organs, including the uterus and other reproductive organs, gall bladder, urinary bladder, respiratory passages, etc. In all these cases,... 

Routine gross and histopathologic examination of the kidneys and urinary bladder did not reveal any effects of nose-only exposure of rats to concentrations of endosulfan of up to 2 mg/m for 6 hours/day,... 

CR is distributed in various organs with highest concentrations in skeletal muscle, myocardium, and brain and lesser amounts in the gastrointestinal tract, uterus, urinary bladder, and kidney ( ). The CR content of liver and red blood cells is negligible so that diseases of these tissues are unlikely to increase the serum CR activity. The serum CR level begins to increase in 2-4 hours after myocardial infarction and reaches a peak in 24-36 hours and returns to normal in about 3 days. 

Strong promoting activity of phenylethyl isothiocyanate and benzyl isothiocyanate on urinary bladder carcinogenesis in F344 male rats , Int J Cancer, 77 773-7. 

OGAWA K, HIROSE M, SUGIURA S, CUI L, IMAIDA K, OGISO T and SHIRAI T (2001) Dose-dependent promotion by phenylethyl isothiocyanate, a known chemopreventer, of two-stage rat urinary bladder and liver carcinogenesis , Nutr Cancer, 40 134-9. 

Studies on rats had shown no toxicity of astaxanthin preparations. Dietary administration of astaxanthin has proved to significantly inhibit carcinogenesis in the mouse urinary bladder, rat oral cavity, and rat colon. In addition, it is reported to induce xenobiotic-metabolizing enzymes in rat liver. 

Large conductance CP-channels were described for renal epithelial cells such as MDCK-cells, urinary bladder, collecting duct and A6-cells [51-54] and in pulmonary alveolar cells [55]. 

The prostate is a heart-shaped, chestnut-sized organ that encircles the portion of the proximal urethra that is located at the base of the urinary bladder. The prostate produces secretions which are part of the ejaculate. 

Patients may or may not be in acute distress. In early stages of disease, the patient may complain of obstructive voiding symptoms. If untreated, in late stages of disease the patient may complain of irritative voiding symptoms, or acute urinary retention, which is painful due to maximal distention of the urinary bladder. Also, the patient may be symptomatic of disease complications, including urosepsis, pyelonephritis, cystitis, or overflow urinary incontinence. 

O Primary peritonitis develops in up to 25% of patients with alcoholic cirrhosis.3 Patients undergoing continuous ambulatory peritoneal dialysis (CAPD) average one episode of peritonitis every 2 years.4 Secondary peritonitis may be caused by perforation of a peptic ulcer traumatic perforation of the stomach, small or large bowel, uterus, or urinary bladder appendicitis pancreatitis diverticulitis bowel infarction inflammatory bowel disease cholecystitis operative contamination of the peritoneum or diseases of the female genital tract such as septic abortion, postoperative uterine infection, endometritis, or salpingitis. Appendicitis is one of the most common causes of intraabdominal infection. In 1998, 278,000 appendectomies were performed in the United States for suspected appendicitis.5... 

Excludes basal and squamous cell skin cancers in situ carcinoma except urinary bladder. 

Intravenous pyelogram Radiograph of the urinary tract, including the kidney ureters, urinary bladder, and urethra radiographic... 

Postvoid residual urine volume Amount of urine left in the urinary bladder after the patient has been asked to empty the bladder. Assessed by urethral catheterization or ultrasonography. Normal postvoid residual urine volume should be less than 50 mL. An increased postvoid residual urine volume is consistent with incomplete bladder emptying. 

Prostate An organ in the urogenital tract that surrounds the urethra at the base of the urinary bladder. Prostatic secretions are secreted into the urethra and become part of the ejaculate in males. 

Diisopropyl methylphosphonate is initially distributed to the liver by way of the portal circulation after absorption from the intestines, and then to the kidneys for excretion (Hart 1976). High concentrations of radiolabel were detected in the urinary bladder itself, exclusive of any urine of mice at 15 minutes and persisted for up to 6 hours. A similar pattern of distribution to the liver, kidney, and urinary bladder was seen in rats over the first 6 hours after oral administration of diisopropyl methylphosphonate. 

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