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Rouget F, Bihannic A, Le Bot B, Mercier F, Gilles E, Garlantezec R, Multigner L, Cordier S, Arnaud A, Pladys P, Chevrier C. Meconium Concentrations of Pesticides and Risk of Hypospadias: A Case-Control Study in Brittany, France. Epidemiology 2024; 35:185-195. [PMID: 37934147 DOI: 10.1097/ede.0000000000001688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
BACKGROUND Hypospadias is a male genital tract defect for which an increase in prevalence has been documented over the last few decades. A role for environmental risk factors is suspected, including prenatal exposure to pesticides. OBJECTIVES To study the risk of hypospadias in association with multiple pesticide measurements in meconium samples. METHODS The Brittany Registry of Congenital Anomalies (France) conducted a case-control study between 2012 and 2018. Cases were hypospadias, ascertained by a pediatrician and a pediatric surgeon, excluding genetic conditions, following European Surveillance of Congenital Anomalies guidelines (N = 69). Controls (N = 135) were two male infants without congenital anomaly born after each case in the same maternity unit. Mothers in the maternity units completed a self-administered questionnaire, we collected medical data from hospital records, and medical staff collected meconium samples. We performed chemical analysis of 38 pesticides (parent compound and/or metabolite) by UHPLC/MS/MS following strict quality assurance/quality control criteria and blind to case-control status. We carried out logistic regression accounting for frequency-matching variables and major risk factors. RESULTS Among the 38 pesticides measured, 16 (42%) were never detected in the meconium samples, 18 (47%) were in <5% of samples, and 4 (11%) in ≥5% of the samples. We observed an association between the detection of fenitrothion in meconium and the risk of hypospadias (OR = 2.6 [1.0-6.3] with n cases = 13, n controls = 21), but not the other pesticides. CONCLUSIONS Our small study provides a robust assessment of fetal exposure. Fenitrothion's established antiandrogenic activities provide biologic plausibility for our observations. Further studies are needed to confirm this hypothesis.
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Affiliation(s)
- Florence Rouget
- From the Brittany Registry of Congenital Anomalies, CHU Rennes, University of Rennes, Inserm, EHESP, Irset - UMR 1085, Rennes, France
| | - Adèle Bihannic
- Brittany Registry of Congenital Anomalies, CHU Rennes, Rennes, France
| | - Barbara Le Bot
- University of Rennes, EHESP, Inserm, Irset - UMR 1085, Rennes, France
| | - Fabien Mercier
- University of Rennes, EHESP, Inserm, Irset - UMR 1085, Rennes, France
| | - Erwann Gilles
- University of Rennes, EHESP, Inserm, Irset - UMR 1085, Rennes, France
| | - Ronan Garlantezec
- CHU Rennes, University of Rennes, Inserm, EHESP, Irset - UMR 1085, Rennes, France
| | - Luc Multigner
- University of Rennes, Inserm, EHESP, Irset - UMR 1085, Rennes, France
| | - Sylvaine Cordier
- University of Rennes, Inserm, EHESP, Irset - UMR 1085, Rennes, France
| | - Alexis Arnaud
- Department of Pediatric Surgery, CHU Rennes, Rennes, France
| | - Patrick Pladys
- CHU Rennes, University of Rennes, Inserm, LTSI-UMR 1099, Rennes, France
| | - Cécile Chevrier
- University of Rennes, Inserm, EHESP, Irset - UMR 1085, Rennes, France
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Fujimoto K, Hashimoto D, Kim SW, Lee YS, Suzuki T, Nakata M, Kumegawa S, Asamura S, Yamada G. Novel erectile analyses revealed augmentable penile Lyve-1, the lymphatic marker, expression. Reprod Med Biol 2024; 23:e12570. [PMID: 38566911 PMCID: PMC10985380 DOI: 10.1002/rmb2.12570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/06/2024] [Accepted: 02/26/2024] [Indexed: 04/04/2024] Open
Abstract
Purpose The pathophysiology of penis extends to erectile dysfunction (ED) to conditions including sexually transmitted diseases (STDs) and cancer. To date, there has been little research evaluating vascular drainage from the penis. We aimed to evaluate penile blood flow in vivo and analyze its possible relationship with the lymphatic maker. Materials and Methods We established an in vivo system designed to assess the dynamic blood outflow from the corpus cavernosum (CC) by dye injection. To analyze lymphatic characteristics in the CC, the expression of Lyve-1, the key lymphatic endothelium marker, was examined by the in vitro system and lipopolysaccharide (LPS) injection to mimic the inflammatory conditions. Results A novel cavernography methods enable high-resolution morphological and functional blood drainage analysis. The expression of Lyve-1 was detected along the sinusoids. Furthermore, its prominent expression was also observed after penile LPS injection and in the erectile condition. Conclusions The current in vivo system will potentially contribute to the assessment of penile pathology from a novel viewpoint. In addition, current analyses revealed inducible Lyve-1 expression for LPS injection and the erection state, which requires further analyses on penile lymphatic system.
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Affiliation(s)
- Kota Fujimoto
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Daiki Hashimoto
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Physiology and Regenerative Medicine, Faculty of MedicineKindai UniversityOsakaJapan
| | - Sang Woon Kim
- Department of Urology, Urological Science InstituteYonsei University College of MedicineSeoulKorea
| | - Yong Seung Lee
- Department of Urology, Urological Science InstituteYonsei University College of MedicineSeoulKorea
| | - Takuya Suzuki
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Masanori Nakata
- Department of Physiology, Faculty of MedicineWakayama Medical UniversityWakayamaJapan
| | - Shinji Kumegawa
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Shinichi Asamura
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Gen Yamada
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
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