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SGLT2 inhibitors and thiazide enhance excretion of DEHP toxic metabolites in subjects with type 2 diabetes: A randomized clinical trial
Environmental Research ( IF 5.715 ) Pub Date : 2020-10-13 , DOI: 10.1016/j.envres.2020.110316
Alessandro Mengozzi; Fabrizia Carli; Letizia Guiducci; Federico Parolini; Edoardo Biancalana; Amalia Gastaldelli; Anna Solini

Objective

Phthalates are non-persistent pollutants related to impaired metabolism and high cardiovascular risk. Their toxic metabolites are eliminated through urine and feces. Prevention policies are considered by the governments, although no therapeutic strategy to facilitate their elimination from the human body has been proposed so far. Aim of the present study was to verify, for the first time in humans, whether diuretics might be able to enhance phthalates’ toxic metabolites urinary output.

Design and methods

We conducted a two-armed, parallel-design, randomized clinical trial.

Thirty patients with type 2 diabetes and hypertension received a four week-treatment with Dapagliflozin 10 mg or Hydrochlorothiazide 12.5 mg. 24-hours urine were collected to measure urinary excretion of three major 2-ethylhexyl-phthalate (DEHP) metabolites, i.e. mono 2-ethylhexyl phthalate (MEHP), mono-2-ethyl-5-oxohexyl phthalate (MEOHP) and mono 2-ethyl-5-hydroxyhexyl phthalate (MEHHP).

Results

24-h urinary excretion of DEHP and MEHP was increased (+44%, p = 0.036; +49%, p = 0.0016) while MEOHP e MEHHP showed only a positive trend (+25%, p = 0.016; +36%, p = 0.062). Irrespective of the specific treatment, induced variations of daily urinary eliminations of MEHP metabolites were related with the 24-h urinary sodium (r = 0.42, p = 0.0226) and potassium (r = 0.54, p = 0.0026) excretion. Also, DEHP and MEOHP were related to sodium (r = 0·43, p = 0.0205; r = 0·44, p = 0.0168 respectively) but not to potassium.

Conclusions

Urinary phthalates excretion seems to occur mainly through sodium- and potassium-related mechanisms, apparently independent from the different diuretic effect. Both thiazide diuretics and SLGT2 inhibitors are effective into the removal of phthalates metabolites from the human body, reducing the human tissues’ exposure to their toxicity.

更新日期:2020-10-17

 

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