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Maurice P, Guilbaud L, Garel J, Mine M, Dugas A, Friszer S, Maisonneuve E, Moutard ML, Coste T, Héron D, Tournier-Lasserve E, Garel C, Jouannic JM. Prevalence of COL4A1 and COL4A2 mutations in severe fetal multifocal hemorrhagic and/or ischemic cerebral lesions. Ultrasound Obstet Gynecol 2021; 57:783-789. [PMID: 32515830 DOI: 10.1002/uog.22106] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/19/2020] [Accepted: 05/27/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To establish the prevalence of COL4A1 and COL4A2 gene mutations in fetuses presenting with a phenotype suggestive of cerebral injury. METHODS This was a single-center retrospective analysis of all cases of fetal cerebral anomalies suggestive of COL4A1 or COL4A2 gene mutation over the period 2009-2018. Inclusion criteria were: (1) severe and/or multifocal hemorrhagic cerebral lesions; (2) multifocal ischemic-hemorrhagic cerebral lesions. These anomalies could be of different ages and associated with schizencephaly or porencephaly. Between fetuses with and those without a mutation, we compared gestational age at the time of diagnosis, parity and fetal gender. RESULTS Among the 956 cases of cerebral anomaly diagnosed in our center during the 10-year study period, 18 fetuses were identified for inclusion. A pathogenic COL4A1 gene mutation was found in five of these cases, among which four were de-novo mutations. A variant of unknown significance was found in four fetuses: in the COL4A1 gene in one case and in the COL4A2 gene in three cases. No COL4A1 or COL4A2 mutation was found in the remaining nine fetuses. The median (interquartile range) gestational age at diagnosis was significantly lower in cases with a mutation (24 (22-26) weeks) than in cases without a mutation (32 (29.5-34.5) weeks) (P = 0.03). CONCLUSIONS A phenotype suggestive of cerebral injury was found in 18 of the 956 (1.9%) cases in our population, in 28% of which there was an associated COL4A1 or COL4A2 mutation. COL4A1 and COL4A2 gene mutations should be sought systematically in cases of severe and/or multifocal hemorrhagic or ischemic-hemorrhagic cerebral lesions, with or without schizencephaly or porencephaly. © 2020 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- P Maurice
- Service de Médecine Fœtale, Hôpital Armand Trousseau APHP, Sorbonne Université, Paris, France
| | - L Guilbaud
- Service de Médecine Fœtale, Hôpital Armand Trousseau APHP, Sorbonne Université, Paris, France
| | - J Garel
- Service de Radiopédiatrie, Hôpital Armand Trousseau APHP, Sorbonne Université, Paris, France
| | - M Mine
- Service de Génétique Moléculaire Neurovasculaire, Hôpital Saint-Louis, APHP, Paris, France
| | - A Dugas
- Service de Médecine Fœtale, Hôpital Armand Trousseau APHP, Sorbonne Université, Paris, France
| | - S Friszer
- Service de Médecine Fœtale, Hôpital Armand Trousseau APHP, Sorbonne Université, Paris, France
| | - E Maisonneuve
- Service de Médecine Fœtale, Hôpital Armand Trousseau APHP, Sorbonne Université, Paris, France
| | - M-L Moutard
- Service de Neuropédiatrie, Hôpital Armand Trousseau APHP, Sorbonne Université, Paris, France
| | - T Coste
- Service de Génétique Moléculaire Neurovasculaire, Hôpital Saint-Louis, APHP, Paris, France
| | - D Héron
- Service de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Hôpital Armand Trousseau APHP, Paris, France
| | - E Tournier-Lasserve
- Service de Génétique Moléculaire Neurovasculaire, Hôpital Saint-Louis, APHP, Paris, France
| | - C Garel
- Service de Radiopédiatrie, Hôpital Armand Trousseau APHP, Sorbonne Université, Paris, France
| | - J-M Jouannic
- Service de Médecine Fœtale, Hôpital Armand Trousseau APHP, Sorbonne Université, Paris, France
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Maurice P, Garel J, Garel C, Dhombres F, Friszer S, Guilbaud L, Maisonneuve E, Ducou Le Pointe H, Blondiaux E, Jouannic JM. New insights in cerebral findings associated with fetal myelomeningocele: a retrospective cohort study in a single tertiary centre. BJOG 2020; 128:376-383. [PMID: 32112473 DOI: 10.1111/1471-0528.16185] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To investigate cerebral anomalies other than Chiari type 2 malformation in fetuses with myelomeningocele (MMC). DESIGN A retrospective cohort study in a single tertiary centre. SETTING A review of associated cerebral anomalies in cases with prenatal diagnosis of myelomeningocele. POPULATION Seventy cases of fetal myelomeningocele. METHODS Ultrasound and MRI images were blindly reviewed. Postnatal imaging and results of the postmortem results were also reviewed. The association between cerebral anomalies and the following ultrasound findings was measured: level of the defect, ventriculomegaly, microcephaly and fetal talipes. MAIN OUTCOME MEASURES A microcephaly was observed in 32/70 cases (46%) and a ventriculomegaly was observed in 39/70 cases (56%). Other cerebral anomalies were diagnosed in 47/70 (67%). RESULTS Other cerebral anomalies were represented by 42/70 cases with abnormal CC (60%), 8/70 cases with perinodular heterotopia (PNH; 11%), 2/70 cases with abnormal gyration (3%). MRI performed only in fetal surgery cases confirmed the ulltrasound findings in all cases and provided additional findings in two cases (PNH). Risk ratios of fetal cerebral anomalies associated with MMC did not reach significance for microcephaly, ventriculomegaly, talipes or the level of the defect There was an overall good correlation between pre- and postnatal findings with a Kappa value of 0.79 [95% CI 0.57-1] and 82% agreement. CONCLUSION Fetal brain anomalies other than Chiari type 2 malformation are frequently observed in fetuses with myelomeningocele, predominantly represented by CC anomalies. Whether these associated cerebral anomalies have an impact on selecting cases eligible for fetal surgery needs further evaluation. TWEETABLE ABSTRACT Fetal cerebral anomalies other than Chiari type 2 malformation, microcephaly, and ventriculomegaly may be associated with MMC in up to 67% of the cases.
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Affiliation(s)
- P Maurice
- Service de Médecine Foetale, Centre de Référence Maladie Rares MAVEM, Hôpital Armand Trousseau, Médecine Sorbonne Université, APHP, Paris, France.,Reference Center for Rare Disease: Vertebral and Spinal Cord Anomalies, Trousseau, France
| | - J Garel
- Service de Radiopédiatrie, Hôpital Armand Trousseau, Médecine Sorbonne Université, APHP, Paris, France
| | - C Garel
- Service de Radiopédiatrie, Hôpital Armand Trousseau, Médecine Sorbonne Université, APHP, Paris, France
| | - F Dhombres
- Service de Médecine Foetale, Centre de Référence Maladie Rares MAVEM, Hôpital Armand Trousseau, Médecine Sorbonne Université, APHP, Paris, France.,Reference Center for Rare Disease: Vertebral and Spinal Cord Anomalies, Trousseau, France
| | - S Friszer
- Service de Médecine Foetale, Centre de Référence Maladie Rares MAVEM, Hôpital Armand Trousseau, Médecine Sorbonne Université, APHP, Paris, France.,Reference Center for Rare Disease: Vertebral and Spinal Cord Anomalies, Trousseau, France
| | - L Guilbaud
- Service de Médecine Foetale, Centre de Référence Maladie Rares MAVEM, Hôpital Armand Trousseau, Médecine Sorbonne Université, APHP, Paris, France.,Reference Center for Rare Disease: Vertebral and Spinal Cord Anomalies, Trousseau, France
| | - E Maisonneuve
- Service de Médecine Foetale, Centre de Référence Maladie Rares MAVEM, Hôpital Armand Trousseau, Médecine Sorbonne Université, APHP, Paris, France.,Reference Center for Rare Disease: Vertebral and Spinal Cord Anomalies, Trousseau, France
| | - H Ducou Le Pointe
- Service de Radiopédiatrie, Hôpital Armand Trousseau, Médecine Sorbonne Université, APHP, Paris, France
| | - E Blondiaux
- Service de Radiopédiatrie, Hôpital Armand Trousseau, Médecine Sorbonne Université, APHP, Paris, France
| | - J-M Jouannic
- Service de Médecine Foetale, Centre de Référence Maladie Rares MAVEM, Hôpital Armand Trousseau, Médecine Sorbonne Université, APHP, Paris, France.,Reference Center for Rare Disease: Vertebral and Spinal Cord Anomalies, Trousseau, France
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Marty-Teysset C, de la Torre F, Garel J. Increased production of hydrogen peroxide by Lactobacillus delbrueckii subsp. bulgaricus upon aeration: involvement of an NADH oxidase in oxidative stress. Appl Environ Microbiol 2000; 66:262-7. [PMID: 10618234 PMCID: PMC91816 DOI: 10.1128/aem.66.1.262-267.2000] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The growth of Lactobacillus delbrueckii subsp. bulgaricus (L. delbrueckii subsp. bulgaricus) on lactose was altered upon aerating the cultures by agitation. Aeration caused the bacteria to enter early into stationary phase, thus reducing markedly the biomass production but without modifying the maximum growth rate. The early entry into stationary phase of aerated cultures was probably related to the accumulation of hydrogen peroxide in the medium. Indeed, the concentration of hydrogen peroxide in aerated cultures was two to three times higher than in unaerated ones. Also, a similar shift from exponential to stationary phase could be induced in unaerated cultures by adding increasing concentrations of hydrogen peroxide. A significant fraction of the hydrogen peroxide produced by L. delbrueckii subsp. bulgaricus originated from the reduction of molecular oxygen by NADH catalyzed by an NADH:H(2)O(2) oxidase. The specific activity of this NADH oxidase was the same in aerated and unaerated cultures, suggesting that the amount of this enzyme was not directly regulated by oxygen. Aeration did not change the homolactic character of lactose fermentation by L. delbrueckii subsp. bulgaricus and most of the NADH was reoxidized by lactate dehydrogenase with pyruvate. This indicated that NADH oxidase had no (or a very small) energetic role and could be involved in eliminating oxygen.
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Affiliation(s)
- C Marty-Teysset
- Laboratoire d'Enzymologie et de Biochimie Structurales du CNRS, 91198 Gif-sur-Yvette, France
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