[Chronobiological approach to renal colic].

F Bilora, G Vettore, R Manfredini, G Matterazzo, G B Vigna, A Dazzi
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Abstract

The concentration of lithogenic and antilithogenic substances in urine shows circadian fluctuations. With this investigation we intended to verify the presence of a chronobiologic rhythm of colic pain in urinary tract calculosis. Four hundred and forty seven consecutive patients with a clinical symptomatology related to urinary tract colic pain were studied. They were subdivided according to sex and age (297 M, 150 F; > or = 65 ys 29, < 65 ys 428). Urinary and blood chemical analysis and instrumental examinations permitted to confirm the clinical diagnosis. To evaluate the circadian and circannual variability, acute events were grouped into one calendar year by the month and into a ideal day by the hour of occurrence respectively. Chronobiologic analysis was performed utilising Halberg single cosinor test. The results pointed out that the symptomatology related to urinary tract colic pain presents a circadian rhythmicity either in patients as a whole or in single subgroups (males, females, younger or older than 65 ys). Besides no seasonal variability was demonstrated, perhaps because of the mild climate present in the geographic area in which the study was carried on.

[时间生物学方法治疗肾绞痛]。
尿中致石物质和抗石物质的浓度呈昼夜波动。本研究旨在验证尿路结石中绞痛的时间生物学节律的存在。本文研究了连续447例与尿路绞痛相关的临床症状。按性别和年龄细分(297 M, 150 F;>或= 65 ys 29, < 65 ys 428)。尿液和血液化学分析和仪器检查允许确认临床诊断。为了评估昼夜节律和年循环变异性,急性事件按月分为一个日历年,按发生时间分为一个理想日。时间生物学分析采用Halberg单余弦检验。结果指出,尿路绞痛相关的症状表现出昼夜节律性,无论是在整个患者中还是在单个亚组中(男性、女性、年龄小于或大于65岁)。此外,没有显示出季节变化,这可能是因为进行研究的地理区域气候温和。
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