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Influence of "Espresso" on Adsorption of Myo-inositol

This study has been completed.
Azienda istituti Ospitalieri
Information provided by:
AGUNCO Obstetrics and Gynecology Centre Identifier:
First received: November 18, 2010
Last updated: January 11, 2012
Last verified: June 2011

Neural Tube Defects (NTDs) are multifactorial (genetic/environmental) diseases that arise from failure of embryonic neural tube closure. Several studies have demonstrated that periconceptional administration of folic acid can prevent approximately 70% of all NTDs cases. The finding of several NTDs cases in a single family, despite prophylactic therapy with folic acid, suggested that a proportion of human NTDs are folate-resistant. So far, no preventive therapy for folate-resistant NTDs is available. Studies performed on folate-resistant NTDs animal models have shown that inositol is effective in preventing NTDs occurrence. Preliminary results in patients with at least two previous pregnancies affected by NTDs, despite folic acid supplementation, indicate that periconceptional treatment with 500 mg/day of inositol (three months before conception and two months after) is able to prevent NTDs recurrence in humans.

Recently, caffeine intake (more than 10 mg/day) has been associated with an increased risk of NTDs, especially for subgroups of people that carry genetic variants for enzymes involved in caffeine metabolism.

The teratogenic effects of caffeine are known since the 70s. Indeed, gynecologists suggest to pregnant women to avoid/reduce caffeine intake. It is still unknown, however, whether pre-conception caffeine intake interferes with prophylactic therapy for NTDs.

In the proposed study, we aim to evaluate the effect of "espresso" consumption (corresponding to about 100 mg caffeine) on the pharmacokinetics of oral administered myo-inositol (MI), in order to highlight any possible negative effects of caffeine on MI adsorption and excretion before conception.

The study will consist of two phases and will be carried on twelve healthy volunteers. During phase 1, volunteers will be kept for 15 days under inositol-poor diet; at the end of this period, 20 g of MI will be administrated in a single dose. Basal levels of serum and urinary concentration will be evaluated before MI administration (t0); subsequently, sampling will be performed 2, 4, 6 and 8 hours after MI administration. Phase 2 will consist of 15 additional days of inositol-poor diet: basal levels of MI will be again measured before MI administration. In phase 2, MI administration will be concomitant to caffeine exposure through single"espresso" consumption. Samples will be collected at the same time points as in phase 1.

Condition Intervention
Neural Tube Defects
Dietary Supplement: Inositol

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Cross-Sectional
Official Title: Influence of "Espresso" on Adsorption of Orally Administrated Myo-inositol in Humans

Resource links provided by NLM:

Further study details as provided by AGUNCO Obstetrics and Gynecology Centre:

Estimated Enrollment: 12
Study Start Date: November 2010

Ages Eligible for Study:   20 Years to 40 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population

Inclusion Criteria:

  • BMI 18 to 24

Exclusion Criteria:

  • on going pregnancies
  • pharmacological treatment in the last 2 weeks
  • chronic diseases
  • Diabetes
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Please refer to this study by its identifier: NCT01244399

Agunco Obstetrics & Gynecology Center
Rome, Italy, 00155
Sponsors and Collaborators
AGUNCO Obstetrics and Gynecology Centre
Azienda istituti Ospitalieri
  More Information

Publications: Identifier: NCT01244399     History of Changes
Other Study ID Numbers: INO_ESP2010
Study First Received: November 18, 2010
Last Updated: January 11, 2012

Keywords provided by AGUNCO Obstetrics and Gynecology Centre:

Additional relevant MeSH terms:
Neural Tube Defects
Spinal Dysraphism
Nervous System Malformations
Nervous System Diseases
Congenital Abnormalities
Vitamin B Complex
Growth Substances
Physiological Effects of Drugs processed this record on April 21, 2017