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See detailPrenatal Diagnosis of Cystic Hygroma and Chorioangioma in the Wolf-Hirschhorn Syndrome
Verloes, Alain ULg; Schaaps, Jean-Pierre ULg; Herens, Christian ULg et al

in Prenatal Diagnosis (1991), 11(2), 129-32

We report the prenatal diagnosis of Wolf-Hirschhorn syndrome (4p-) in a 24-week-old fetus. Echographic features included cystic hygroma, a complex heart defect with right ventricular hypoplasia, and a ... [more ▼]

We report the prenatal diagnosis of Wolf-Hirschhorn syndrome (4p-) in a 24-week-old fetus. Echographic features included cystic hygroma, a complex heart defect with right ventricular hypoplasia, and a large placental chorioangioma. We suggest that chorioangioma may be associated with chromosomal imbalance and that systematic careful morphologic examination of the fetus and karyotyping of any pregnancy in which large chorioangioma is detected is advisable. Jugular lymphatic obstruction sequence has not been reported so far in association with 4p-syndrome. [less ▲]

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See detailBranchial Arch Anomalies in Trisomy 18
Verloes, Alain ULg; Seret, N.; Bernier, V. et al

in Annales de Génétique (1991), 34(1), 22-4

The authors report two newborns and one fetus with trisomy 18, who have severe anomalies of the first branchial arch: extreme microtia with imperforate external meatus in two cases, and hemifacial ... [more ▼]

The authors report two newborns and one fetus with trisomy 18, who have severe anomalies of the first branchial arch: extreme microtia with imperforate external meatus in two cases, and hemifacial microsomia in a third one. Those cases point to the huge phenotypic variability of the trisomy 18. [less ▲]

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See detailTrisomy 20q. A New Case and Further Phenotypic Delineation
Herens, Christian ULg; Verloes, Alain ULg; Laloux, Françoise ULg et al

in Clinical Genetics (1990), 37(5), 363-6

The present report concerns the clinical and cytogenetic findings in a liveborn girl with trisomy for the long arm of chromosome 20. She was the unbalanced product of a maternal t(18;20)(q23.2;q13.1 ... [more ▼]

The present report concerns the clinical and cytogenetic findings in a liveborn girl with trisomy for the long arm of chromosome 20. She was the unbalanced product of a maternal t(18;20)(q23.2;q13.1) translocation. Our case is compared to the 3 previous reports of trisomy 20q associated with telomeric translocation. Adenosine deaminase dosage falls in the normal range and confirms the exclusion of the ADA locus from the region extending distally to 20q13.1. [less ▲]

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See detailMosaicism of 46,Xx/47,Xx,+9/47,Xx,+?Mar in the Same Amniotic Fluid with Apparent Loss of One Cell Line after Delivery
Herens, Christian ULg; Pierquin, Geneviève ULg; Verloes, Alain ULg et al

in Prenatal Diagnosis (1989), 9(5), 373-5

A 46,XX;47,XX,+9;47,XX,+?mar karyotype was detected in an amniotic fluid cell culture and confirmed in a subsequent fetal blood sample from a 40-year-old woman. After termination of the pregnancy, none of ... [more ▼]

A 46,XX;47,XX,+9;47,XX,+?mar karyotype was detected in an amniotic fluid cell culture and confirmed in a subsequent fetal blood sample from a 40-year-old woman. After termination of the pregnancy, none of the 186 mitoses obtained from a second blood sample was trisomic for chromosome 9 (p less than 0.001). Selection against cells containing trisomy 9 is postulated to explain the disappearance of the lymphocyte clone. [less ▲]

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See detailCircadian Synchronization of Liver Regeneration in Adult Rats: The Role Played by Adrenal Hormones
Barbason, Hervé ULg; Bouzahzah, B.; Herens, Christian ULg et al

in Cell and Tissue Kinetics (1989), 22(6), 451-460

The role played by the adrenal hormones in the regulation of liver proliferation in adult rats was investigated under various experimental conditions. In untreated control groups, cell growth was very low ... [more ▼]

The role played by the adrenal hormones in the regulation of liver proliferation in adult rats was investigated under various experimental conditions. In untreated control groups, cell growth was very low and endogenous corticosterone levels showed a clearly-defined circadian rhythm with a peak in the evening. Adrenalectomy depressed the level of endogenous corticosterone immediately and the growth rate of the liver increased significantly. We were able to prevent this effect by repeated injections of corticosterone at physiological doses. After a 1/3 hepatectomy and a sham-operation, the corticosterone blood level maintained its normal circadian pattern with the exception of a transient increase during the first two post-operative hours. After a hepatectomy of this kind, a negative correlation was found to exist between the adrenal hormone level and the waves of DNA synthesis; the subsequent mitoses appeared in two successive circadian waves of decreasing amplitude, a maximum value being reached in the morning. In rats submitted to a 1/3 hepatectomy and an adrenalectomy simultaneously, the endogenous corticosterone level fell significantly after a post-operative peak. The regenerating pattern was completely different from that induced by 1/3 hepatectomy alone. The rise in the labelling index began earlier and rose to significantly higher values; it was then followed by a single large mitotic wave without any circadian rhythm. These results favour the hypothesis that adrenal hormones have a significant effect on the negative control of liver regeneration. Circadian changes in the corticosterone level were responsible for the nycthemeral pattern observed in the regenerating liver after a partial hepatectomy. The results show a marked inhibition of the G1-S transition, particularly in the evening, when the endogenous corticosterone concentration was at its highest. Also discussed is the relationship between corticoids and 'chalones', which synergetically inhibit the passage from G0 into the cell cycle. [less ▲]

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See detailRoberts-Sc Phocomelia Syndrome with Exencephaly
Verloes, Alain ULg; Herens, Christian ULg; Van Maldergem, Lionel ULg et al

in Annales de Génétique (1989), 32(3), 169-70

We report a 18 weeks old fetus with the typical limb reduction anomalies of SC phocomelia syndrome, associated with exencephaly and unilateral anophthalmia, a feature previously reported in only 2 cases ... [more ▼]

We report a 18 weeks old fetus with the typical limb reduction anomalies of SC phocomelia syndrome, associated with exencephaly and unilateral anophthalmia, a feature previously reported in only 2 cases of severe Roberts syndrome. This observation brings another argument for lumping both diseases in a unique Roberts-SC phocomelia syndrome. Diagnosis was settled by the observation of premature centromeric splitting. [less ▲]

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See detailPartial Trisomy 20q Due to Paternal T(8;20) Translocation. Case Report and Review of the Literature
Pierquin, Geneviève ULg; Herens, Christian ULg; Dodinval, P. et al

in Clinical Genetics (1988), 33(5), 386-9

In this report we present a malformed female newborn with partial trisomy 20q who was the unbalanced product of a paternal 8p/20q translocation (46,XY,t(8;20) (p23.1;q11].

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See detailProduction of heterobispecific monoclonal antibodies by mouse hybrid hybridomas (quadromas)
Cloes, Jean-Michel; Herens, Christian ULg; Nys, Monique ULg et al

in Archives Internationales de Physiologie, de Biochimie et de Biophysique (1988), 96

Detailed reference viewed: 33 (10 ULg)
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See detailChromosome 22 Mosaic Monosomy (46,Xy/45,Xy,-22)
Verloes, Alain ULg; Herens, Christian ULg; Lambotte, C. et al

in Annales de Génétique (1987), 30(3), 178-9

A slightly dysmorphic and mentally defective child with mosaic monosomy 22 is reported. Chromosome 22 is absent in 10.5% of lymphocytes and 8.3% of fibroblasts. This is the second case report of that kind.

Detailed reference viewed: 65 (4 ULg)