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Cryptorchidism: Impact of in Utero Exposure to Xenobiotics With Hormonal Action

Primary Purpose

Cryptorchidism

Status
Completed
Phase
Not Applicable
Locations
Study Type
Interventional
Intervention
blood test
Sponsored by
Centre Hospitalier Universitaire de Nice
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional prevention trial for Cryptorchidism

Eligibility Criteria

undefined - 1 Year (Child)MaleAccepts Healthy Volunteers

Inclusion Criteria:

  • Women having given birth to a boy at University hospital of Nice or Général hospital of Grasse

Exclusion Criteria:

  • parents who don't signed consent

Sites / Locations

    Arms of the Study

    Arm 1

    Arm Type

    Other

    Arm Label

    A

    Arm Description

    cord blood and maternal milk tests

    Outcomes

    Primary Outcome Measures

    Neonatal examination for the diagnosis of undescended testis (cryptorchidism)

    Secondary Outcome Measures

    Measurement of xenobiotic concentrations in cord blood and maternal milk in cryptorchid and control boys Parental questionnaires: demographic information, lifestyle, job exposure Pregnancy, delivery and neonatal other information

    Full Information

    First Posted
    November 29, 2007
    Last Updated
    November 29, 2007
    Sponsor
    Centre Hospitalier Universitaire de Nice
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    1. Study Identification

    Unique Protocol Identification Number
    NCT00565513
    Brief Title
    Cryptorchidism: Impact of in Utero Exposure to Xenobiotics With Hormonal Action
    Official Title
    Cryptorchidism: Impact of in Utero Exposure to Xenobiotics With Hormonal Action and Multidisciplinary
    Study Type
    Interventional

    2. Study Status

    Record Verification Date
    November 2007
    Overall Recruitment Status
    Completed
    Study Start Date
    April 2002 (undefined)
    Primary Completion Date
    undefined (undefined)
    Study Completion Date
    April 2006 (Actual)

    3. Sponsor/Collaborators

    Name of the Sponsor
    Centre Hospitalier Universitaire de Nice

    4. Oversight

    Data Monitoring Committee
    No

    5. Study Description

    Brief Summary
    We studied prospectively the incidence of cryptorchidism in Nice area. We tightly matched each affected child (n=95) with 2 healthy controls (n=188) and assessed risk factors for cryptorchidism focussing on prenatal exposure (cord blood and maternal milk) to endocrine disruptors known to affect testis migration, searching for correlations with cryptorchid status
    Detailed Description
    Since fetal exposure to anti-androgenic and/or estrogenic compounds is deleterious to animal reproduction, such exposure could be harmful to human fetus as well. Data are scarce on human exposure and the occurrence of cryptorchidism. DESIGN: From 2002 to 2005, we performed a prospective case-control study to assess the incidence of cryptorchidism and fetal exposure to selected chemicals in newborn boys in Nice area. This study was approved by the ethical board of our institution. Out of 6246 live births at or after 34 weeks of gestational age and born at 2 maternity wards (University hospital of Nice and General Hospital of Grasse), 102 boys were diagnosed with cryptorchidism. After informed parental consent, 95 were included in this study, along with 188 tightly matched controls. Cord blood was collected at birth, as well as maternal milk from nursing mothers. Lifestyle and job questionnaires were filled by parents. Children were re-examined at 3 and 12 months of age to assess possible secondary testis migration, or confirm their control status. 151 cord bloods (67 cryptorchid, 84 controls) and 125 maternal milks (56 for cryptorchid boys and 69 for controls) were collected and screened for xenobiotics, including DDE, PCBs, and dibutylphthalate (and metabolite monobutylphthalate -mBP). We established scores of exposure in colostrum and studied possible relationships between exposure and cryptorchidism. We also measured hormonal status on cord blood including AMH and inhibin concentrations. RESULTS: The incidence of cryptorchidism was 1.6% at birth, similar in Nice and Grasse, and 0.8% at 3 months of age. Xenobiotic measurements in cord blood and milk showed universal exposure in our population. Median concentrations in maternal milk were higher though not significantly in cryptorchid vs controls: DDE 119.4 vs 80 ng/g of fat, ΣPCB 206.3 vs 166.8 ng/g of fat, mBP 17.3 vs 10.3 ng/g of milk. Cryptorchid boys were more likely to be classified in the most contaminated groups for ΣPCBs (57.1% vs 39.1% p=0.045), DDE (53.6 vs 36.2% p=0.037) and to a lesser degree mBP (58.1 vs 40%, p=0.13). This was also true for the composite score using DDE and ΣPCBs (30.4 vs 21.7%, p=0.05). Last, the odds ratio for cryptorchidism at birth was increased for the highest score of: DDE: 2.03 (p=0.05, 95%CI 0.99-4.17); ΣPCB 2.07 (p=0.046, 95%CI 1.01-4.25); composite score without phthalates 2.41 (p=0.06, 95%CI 0.96-6.1) vs the lowest score of those components. CONCLUSIONS: The incidence of cryptorchidism at birth of 1.6% is similar to other populations. Our results support an association between fetal exposure to DDE, PCBs and possibly mBP, and the occurrence of cryptorchidism at birth. Higher concentrations in milk could be a marker of higher exposure or for an impaired detoxification pattern in genetically predisposed individuals. Long term follow up of our cohort is planned to screen cryptorchid and control boys for low sperm count, infertility and testis cancer.

    6. Conditions and Keywords

    Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
    Cryptorchidism

    7. Study Design

    Primary Purpose
    Prevention
    Study Phase
    Not Applicable
    Interventional Study Model
    Parallel Assignment
    Masking
    None (Open Label)
    Enrollment
    283 (Actual)

    8. Arms, Groups, and Interventions

    Arm Title
    A
    Arm Type
    Other
    Arm Description
    cord blood and maternal milk tests
    Intervention Type
    Procedure
    Intervention Name(s)
    blood test
    Intervention Description
    cord blood and maternal milk test
    Primary Outcome Measure Information:
    Title
    Neonatal examination for the diagnosis of undescended testis (cryptorchidism)
    Time Frame
    At birth, 3 and 12 month of age
    Secondary Outcome Measure Information:
    Title
    Measurement of xenobiotic concentrations in cord blood and maternal milk in cryptorchid and control boys Parental questionnaires: demographic information, lifestyle, job exposure Pregnancy, delivery and neonatal other information
    Time Frame
    At birth

    10. Eligibility

    Sex
    Male
    Maximum Age & Unit of Time
    1 Year
    Accepts Healthy Volunteers
    Accepts Healthy Volunteers
    Eligibility Criteria
    Inclusion Criteria: Women having given birth to a boy at University hospital of Nice or Général hospital of Grasse Exclusion Criteria: parents who don't signed consent
    Overall Study Officials:
    First Name & Middle Initial & Last Name & Degree
    Françoise BRUCKER-DAVIS, Doctor
    Organizational Affiliation
    Department of Endocrinology of University Hospital of Nice
    Official's Role
    Principal Investigator

    12. IPD Sharing Statement

    Learn more about this trial

    Cryptorchidism: Impact of in Utero Exposure to Xenobiotics With Hormonal Action

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