Ureteric smooth muscle

Sarcoplasmic reticulum function and contractile consequences in ureteric smooth muscles... 

FIG. 1 Simultaneous recording of the action potential (bottom trace), Ca2+ transients (middle trace) and force (top trace) in (A) guinea pig and (B) rat ureteric smooth muscle. (A, taken from Burdyga Wray 1997 B, taken from Burdyga Wray 1999a.)... 

Burdyga TV, Wray S 1999b The effect of cyclopiazonic acid on excitation-contraction coupling in guinea-pig ureteric smooth muscle role of the sarcoplasmic reticulum. J Physiol 517 855-865... 

Burdyga TV, Taggart MJ, Crichton C, Smith GI, Wray S 1998 The mechanism of Ca2+ release from the SR of permeabilised guinea-pig and rat ureteric smooth muscle. Biochim Biophys Acta 1402 109-114... 

Prishchepa LA, Burdyga TV, Kosterin SA 1996 Two components of sodium azide-insensitive Mg2+, ATP-dependent Ca2+ transport in ureteral smooth muscle membrane structures (translated from Russian). Biokhimiia 61 1250—1256 Rose JG, Gillenwater JY 1973 Pathophysiology of ureteral obstruction. Am J Physiol 225 830-837... 

Renal colic Pilocarpine may increase ureteral smooth muscle tone and could theoretically precipitate renal colic (or ureteral reflux ), particularly in patients with... 

Antimuscarinic agents have also been used in urolithiasis to relieve the painful ureteral smooth muscle spasm caused by passage of the stone. However, their usefulness in this condition is debatable. 

Klarskov (1987) studied the non-cholinergic, non-adrenergic inhibitory nerve responses of bladder outlet smooth muscle from female Danish Landrace pigs in vitro. Trigone strips were taken in an oblique direction from the internal urethral orifice and medially to one of the ureteric orifices, bladder neck strips transversal from the posterior half of the borderline between bladder and urethra, and urethral strips longitudinal from the proximal posterior part. 

Contains more than a score of alkaloids, including morphine, narcotine, papaverine, and codeine, which act to relax smooth muscle, relieve pain, and cause sedation by depressant effect on cerebral cortex, hypothalamus, and medullary centers. It is indicated in the relief of moderate to severe pain associated with ureteral spasm not responsive to nonnarcotic analgesics and to space intervals between injections of opiates. 

Yes. Isosorbide nitrates relax all types of smooth muscle including bronchial, biliary, gastrointestinal (GI), ureteral, and uterine. 

Smooth muscle Opioids cause contraction of biliary tract smooth muscle (which may cause biliary spasm), increased ureteral and bladder sphincter tone, and a reduction in uterine tone that may contribute to prolongation of labor. 

The diagnosis is suspected when decreased renal function is associated with dilatation of the collecting system on US (Fig. 3.8). However, such dilatation may be passive, due to two phenomena either a full bladder, requiring repeated US after complete voiding or bladder catheterization, or a loss of smooth-muscle tonus secondary to ureteral denervation. Unfortunately, this latter mechanism is difficult to confirm usually it occurs very early after transplantation and dilatation is observed during follow-up, despite persistently normal renal function. 

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