scholarly journals Silver Russell syndrome in a  preterm girl with 8q12.1 deletion encompassing PLAG1.

2021 ◽  
Author(s):  
José Ramón Fernández-Fructuoso ◽  
Cristina De la Torre-Sandoval ◽  
Madeleine Harbison ◽  
Sandra Chantot-bastaraud ◽  
I. Temple ◽  
...  
Keyword(s):  
Clinical Features ◽  
Growth Retardation ◽  
Intrauterine Growth Retardation ◽  
De Novo ◽  
Postnatal Growth ◽  
Postnatal Growth Retardation ◽  
Feeding Difficulties ◽  
Intrauterine Growth ◽  
Molecular Features ◽  
Silver Russell Syndrome

Silver Russell syndrome (SRS) is a congenital disorder characterised by intrauterine growth retardation (IUGR), feeding difficulties and postnatal growth retardation. In a small number of cases PLAG1 variants have been described (OMIM #618907). PLAG1 haploinsufficiency decreases IGF2 expression and produces a Silver Russell syndrome like phenotype. Here, we describe the phenotype and molecular features of a 26 months girl with clinical features of SRS and a de novo 2.1 Mb deletion encompassing PLAG1 is reported in association with clinical features suggestive of SRS.

PRENATAL AND POSTNATAL DEVELOPMENTAL CONSEQUENCES OF MATERNAL PHENYLKETONURIA

PEDIATRICS ◽  
1966 ◽  
Vol 37 (6) ◽  
pp. 979-986
Author(s):  
Robert O. Fisch ◽  
William A. Walker ◽  
John A. Anderson
Keyword(s):  
Growth Retardation ◽  
Intrauterine Growth Retardation ◽  
Detrimental Effect ◽  
Postnatal Growth ◽  
Maternal Phenylketonuria ◽  
Phenylalanine Level ◽  
Postnatal Growth Retardation ◽  
Intrauterine Growth ◽  
Prenatal Growth ◽  
Abnormal Metabolism

Two children, one homozygous and the other heterozygous for phenylketonuria, born of an untreated phenylketonuric mother were found to exhibit intrauterine growth retardation and persistent postnatal growth retardation. Microcephaly was present in both children at birth. Microcephaly, mental retardation, and growth retardation were present in the heterozygous child at 5 years of age and in the untreated homozygous child at 2 years of age. The possibility that the comparatively high phenylalanine level in the mother's blood and the concomitant abnormal metabolism had a detrimental effect on the child's prenatal growth and predetermined the rate of their postnatal physical as well as mental development, was discussed.

scholarly journals Novel Variant in PLAG1 in a Familial Case with Silver–Russell Syndrome Suspicion

Genes ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1461
Author(s):  
Yerai Vado ◽  
Arrate Pereda ◽  
Isabel Llano-Rivas ◽  
Nerea Gorria-Redondo ◽  
Ignacio Díez ◽  
...  
Keyword(s):  
Growth Retardation ◽  
Genetic Disorder ◽  
Panel Study ◽  
Uniparental Disomy ◽  
Postnatal Growth ◽  
Triangular Face ◽  
Chromosome 11P15 ◽  
Postnatal Growth Retardation ◽  
Feeding Difficulties ◽  
Silver Russell Syndrome

Silver–Russell syndrome (SRS) is a rare growth-related genetic disorder that is mainly associated with prenatal and postnatal growth retardation. Molecular causes are not clear in all cases, the most common ones being loss of methylation on chromosome 11p15 (≈50%) and maternal uniparental disomy for chromosome 7 (upd(7)mat) (≈10%). However, pathogenic variants in genes such as CDKN1C, HMGA2, IGF2, or PLAG1 have also been described. Previously, two families and one sporadic case have been reported with PLAG1 alterations. Here, we present a case of a female with clinical suspicion of SRS (i.e., intrauterine and postnatal growth retardation, triangular face, psychomotor delay, speech delay, feeding difficulties). No alterations in methylation or copy number were detected at chromosomes 11p15 and 7 using methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA). The custom panel study by next-generation sequencing (NGS) revealed a frameshift variant in the PLAG1 gene (NM_002655.3:c.551delA; p.(Lys184Serfs *45)). Familial studies confirmed that the variant was inherited from the mother and it was also present in other family members. New evidence of pathogenic alterations in the HMGA2-PLAG1-IGF2 pathway suggest the importance of studying and taking into account these genes as alternative molecular causes of Silver–Russell syndrome.

scholarly journals Maternal Uniparental Disomy of Chromosome 20 (UPD(20)mat) as Differential Diagnosis of Silver Russell Syndrome: Identification of Three New Cases

Genes ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 588
Author(s):  
Pierpaola Tannorella ◽  
Daniele Minervino ◽  
Sara Guzzetti ◽  
Alessandro Vimercati ◽  
Luciano Calzari ◽  
...  
Keyword(s):  
Growth Retardation ◽  
Molecular Mechanisms ◽  
Uniparental Disomy ◽  
Postnatal Growth ◽  
Molecular Diagnostic ◽  
Growth Delay ◽  
Molecular Defect ◽  
Maternal Uniparental Disomy ◽  
Feeding Difficulties ◽  
Silver Russell Syndrome

Silver Russell Syndrome (SRS, MIM #180860) is a rare growth retardation disorder in which clinical diagnosis is based on six features: pre- and postnatal growth failure, relative macrocephaly, prominent forehead, body asymmetry, and feeding difficulties (Netchine–Harbison clinical scoring system (NH-CSS)). The molecular mechanisms consist in (epi)genetic deregulations at multiple loci: the loss of methylation (LOM) at the paternal H19/IGF2:IG-DMR (chr11p15.5) (50%) and the maternal uniparental disomy of chromosome 7 (UPD(7)mat) (10%) are the most frequent causes. Thus far, about 40% of SRS remains undiagnosed, pointing to the need to define the rare mechanisms in such a consistent fraction of unsolved patients. Within a cohort of 176 SRS with an NH-CSS ≥ 3, a molecular diagnosis was disclosed in about 45%. Among the remaining patients, we identified in 3 probands (1.7%) with UPD(20)mat (Mulchandani–Bhoj–Conlin syndrome, OMIM #617352), a molecular mechanism deregulating the GNAS locus and described in 21 cases, characterized by severe feeding difficulties associated with failure to thrive, preterm birth, and intrauterine/postnatal growth retardation. Our patients share prominent forehead, feeding difficulties, postnatal growth delay, and advanced maternal age. Their clinical assessment and molecular diagnostic flowchart contribute to better define the characteristics of this rare imprinting disorder and to rank UPD(20)mat as the fourth most common pathogenic molecular defect causative of SRS.

scholarly journals Progeroid Syndrome of De Barsy With Hypocalcemic Seizures

2012 ◽  
Vol 32 (2) ◽  
pp. 175-177
Author(s):  
J Cheriathu ◽  
IE D'souza ◽  
LJ John ◽  
R El Bahtimi
Keyword(s):  
Clinical Features ◽  
United Arab Emirates ◽  
Growth Retardation ◽  
Intrauterine Growth Retardation ◽  
Cutis Laxa ◽  
Cerebral Malformation ◽  
Malformation Syndrome ◽  
Intrauterine Growth ◽  
Corneal Clouding ◽  
First Case

De Barsy et al first reported a rare cutaneo-oculo-cerebral malformation-syndrome now commonly referred as ‘progerioid syndrome of de Barsy’. It is the constellation of progeria-like appearance, cutis laxa, intrauterine growth retardation, corneal clouding and hypotonia. We report a case of Debarsy syndrome in a neonate presented at birth with typical clinical features with hypocalcemic seizures. There are no previous reports among Afghani origin and also first case reported from United Arab Emirates, there have been no reported cases of hypocalcemic seizures. J Nepal Paediatr Soc 2012;32(2):175-177 doi: http://dx.doi.org/10.3126/jnps.v32i2.5993

A model of intrauterine growth retardation caused by chronic maternal undernutrition in the rat: effects on the somatotrophic axis and postnatal growth

1996 ◽  
Vol 150 (2) ◽  
pp. 231-242 ◽  
Author(s):  
S M Woodall ◽  
B H Breier ◽  
B M Johnston ◽  
P D Gluckman
Keyword(s):  
Growth Retardation ◽  
Intrauterine Growth Retardation ◽  
Postnatal Growth ◽  
Maternal Plasma ◽  
Intrauterine Growth ◽  
Maternal Undernutrition ◽  
Body Weights ◽  
Igf I ◽  
Ad Libitum ◽  
Somatotrophic Axis

Abstract While it is well established that severe maternal undernutrition during pregnancy causes intrauterine growth retardation (IUGR), there has been relatively little study of the endocrine consequences and postnatal development of growth-retarded offspring. We have developed a model in the rat of IUGR by nutritional restriction of the mother throughout gestation and have examined the effects of fetal growth retardation on the endocrine and metabolic status during the perinatal period. Timed matings were performed in Wistar rats and dams were randomly assigned to one of two dietary treatment groups. Food was available ad libitum throughout pregnancy to a control group (ad libitum group) and a restricted group was fed 30% of the ad libitum intake (restricted fed group). After birth, food was available ad libitum in both groups and litter size was adjusted to eight pups per litter. Dams lost a significant amount of body weight throughout gestation due to undernutrition but were able to catch up to the ad libitum group by day 10 postnatally. Litter size was not affected by maternal undernutrition. Maternal plasma IGF-I levels were significantly reduced in the restricted fed group throughout gestation (P<0·001) but were not different postnatally. Maternal plasma IGF-binding proteins (IGFBPs)-1, -2 and -3 were significantly (P<0·05) increased in the restricted fed dams. The mean body weights of fetuses in late gestation from the restricted fed dams were significantly lower (P<0·001) in comparison with fetuses from control dams. Placental weights were also significantly (P<0·01) reduced in the restricted fed compared with control dams. Body weights were significantly lower in the offspring of restricted fed dams than control dams from birth (P<0·01) until 90 days of age (P<0·05). Nose–rump length was reduced in the fetuses of the restricted fed group at day 22 of gestation (P<0·001) until weaning (P<0·05). Plasma IGF-I levels were significantly reduced in the pups of restricted fed dams from day 22 of gestation (P<0·01) until postnatal day 9 (P<0·05) but were not significantly different at the later time-points. Plasma insulin levels were significantly reduced in the pups of restricted fed dams at birth (P<0·05) but not at later time-points. Plasma IGFBP-1 and -2 levels were significantly increased in the offspring from restricted fed dams at day 22 of gestation, at birth and at day 9 postnatally (P<0·05). 125I-Bovine GH specific binding to liver membranes was significantly lower (P<0·05) in offspring from restricted fed dams at 21 days of age but not at 90 days of age. These data demonstrate that nutritional deprivation in the pregnant rat leads to IUGR and postnatal growth failure and to changes in allometric growth patterns and endocrine parameters of the somatotrophic axis postnatally. Journal of Endocrinology (1996) 150, 231–242

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