{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T05:01:52Z","timestamp":1777870912654,"version":"3.51.4"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2010,1,29]],"date-time":"2010-01-29T00:00:00Z","timestamp":1264723200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2010,1,29]],"date-time":"2010-01-29T00:00:00Z","timestamp":1264723200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Urol Int"],"abstract":"<jats:p>The [Ca++] gradient within the rabbit renal pelvis was compared to its inherent pacemaker frequency. The pelvis was removed from the rabbit, sectioned, and [Ca++] ions assayed using wet ash techniques and atomic absorption spectrophotometry. Contraction frequency was measured isometrically in vitro. In the bisected pelvis it was found that both [Cu++] levels and contraction frequency were highest in the proximal section, 9.02 \u00b1 4.62 mEq\/kg, and lower in the distal section, 6.59 \u00b1 2.43 mEq\/kg wet weight. The mean frequency of contraction decreased from 3.69 \u00b1 0.81 to 2.41 \u00b1 0.49 min\u2013\u20131 in the proximal and distal regions, respectively.<\/jats:p>","DOI":"10.1159\/000280769","type":"journal-article","created":{"date-parts":[[2010,2,2]],"date-time":"2010-02-02T03:42:27Z","timestamp":1265082147000},"page":"256-264","source":"Crossref","is-referenced-by-count":0,"title":["Gradient of Total [Ca\n                    <sup>+<\/sup>\n                    <sup>+<\/sup>\n                    ] in the Renal Pelvis"],"prefix":"10.1159","author":[{"given":"C.","family":"Shugart-Reimnitz","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C.E.","family":"Constantinou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2010,1,29]]},"container-title":["Urologia Internationalis"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000280769","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T16:51:23Z","timestamp":1777567883000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000280769"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,1,29]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000280769","archive":["Portico"],"relation":{},"ISSN":["0042-1138","1423-0399"],"issn-type":[{"value":"0042-1138","type":"print"},{"value":"1423-0399","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,1,29]]}}}