Hormonal Influences upon the Ureter

Nonsurgical Management of Urolithiasis: An Overview of Expulsive Therapy

“…After removal of the fetus and thereby elimination of the mechanical obstruction, the ureter demonstrated sustained or increased dilation while the placenta was still in situ. In separate studies, Traut and McLane 7 and, subsequently, Hundley and colleagues 8 showed abnormal ureteral peristalsis in pregnant patients. Studies in rodents by Raz and colleagues 9 suggest that the hormonal component of the ureteral dilation of pregnancy is secondary to the effect of progesterone on the ␤-adrenergic receptors.…”

Functional Anatomy of the Vesicoureteric Junction: Implication on the Management of VUR/ UTI

“…Hormonal changes of pregnancy are thought to cause smooth muscle relaxation (Hundley et al, 1942;Kumar, 1962). In our institution, we sought to investigate whether this hormonal effect on the smooth muscle exists within the maternal urinary tract, if the hypothesis of a functional active sphincteric mechanism at the VUJ is sound.…”

The Ureterocalyceal System in Normal Pregnancy

“…Cystometric studies in our Department showed that the tone of the bladder is much decreased and its capacity much increased in normal pregnancy (25, 26). Traut & McLane (23) and Hundley (12) maintained that ureteric tone and contractility diminish as pregnancy advances and believed that this was dependent on hormonal secretion especially progesterone. More recently Sala & Rubi (21) criticized the technique used by these authors and found that the intensity, frequency and tonus of ureteric contractions a p parently did not change throughout pregnancy.…”