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Stress-stones-stress-recurrent stones: a self-propagating cycle? Difficulties in solving this dichotomy.

Abstract：

:Numerous studies have reported an association between stress and urolithiasis. Although urinary risk factors have been measured in several of these, compelling evidence of a causal relationship has not been established. A shortcoming is that alterations in single urinary parameters rather than ratios and quotients, which provide a more synergistic risk evaluation, have been measured. Recently, we speculated about a possible association between chronic stress and stone recurrence. This presents an intriguing dichotomy of whether stress causes stones or vice versa, or whether they are linked in a self-propagating stress-stones-stress-recurrence cycle. We investigated the latter hypothesis in a retrospective case-control designed study in which we calculated urinary ratios and quotients which are regarded as diagnostic indicators of stone risk. These included Ca/Cr, Ox/Cr, Mg/Cr, Cit/Cr, urate/Cr and citrate-magnesium-calcium ratios, activity product quotient for calcium oxalate (CaOx) and relative supersaturation of CaOx, brushite and uric acid. Overnight urinary data from 128 participants comprising 31 first time (FS), 33 recurrent (RS) CaOx stone formers and 64 controls were used. All subjects had been previously assessed for chronic stress dimensions, as well as for stress caused by their stone episodes per se. Conditional and unconditional logistic regression (with a Bonferroni correction for multiple tests) and simple linear regression were used to analyse various components of the data. Although RS had more stressful life events, with greater intensity of perception than FS, there were no significant differences between the groups regarding any of the urinary risk factors. No significant association between stressful life events and any of the urinary ratios or quotients was observed. A direct causal link between stress and stone recurrence was not indicated. We believe that future studies should shift their focus from traditional urinary risk factors to other stone-forming mechanisms. However, we recognize that there is an inherent problem in attempting to solve the stress-stones dichotomy as it would be impossible to disentangle alterations in risk factors which arise from lifestyle stress and those arising from stone episodes themselves.

journal_name

Urolithiasis

journal_title

Urolithiasis

authors

Arzoz-Fabregas M,Roca-Antonio J,Ibarz-Servio L,Jappie-Mahomed D,Rodgers A

doi

10.1007/s00240-017-0970-5

subject

Has Abstract

pub_date

2017-12-01 00:00:00

pages

515-524

issue

6

eissn

2194-7228

issn

2194-7236

pii

10.1007/s00240-017-0970-5

journal_volume

45

pub_type

杂志文章

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