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Hypoparathyroidism in an Egyptian child with Hutchinson-Gilford progeria syndrome: a case report.

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BACKGROUND Hutchinson-Gilford progeria syndrome is a rare genetic disorder. It is reported to be present in one in eight million and is characterized by severe growth failure, early loss of hair, lipodystrophy, scleroderma, decreased joint mobility, osteolysis, early atherosclerosis and facial

[Morphology of the cells in the peritoneal exsudate and phosphatase activity of the peritoneal macrophages experimentally aged rats treated with the intracellular bacterium Brucella abortus 19 (author's transl)].

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The authors study the morphology of the cells in the peritoneal exsudate and the phosphatase activity of the peritoneal macrophages, obtained from rats with Selye's Progeria-like syndrome. Judging by their morphologic characteristics the macrophages of the experimentally aged rats, before and after

Diminished Canonical β-Catenin Signaling During Osteoblast Differentiation Contributes to Osteopenia in Progeria.

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Patients with Hutchinson-Gilford progeria syndrome (HGPS) have low bone mass and an atypical skeletal geometry that manifests in a high risk of fractures. Using both in vitro and in vivo models of HGPS, we demonstrate that defects in the canonical WNT/β-catenin pathway, seemingly at the level of the

Defective extracellular pyrophosphate metabolism promotes vascular calcification in a mouse model of Hutchinson-Gilford progeria syndrome that is ameliorated on pyrophosphate treatment.

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BACKGROUND Progerin is a mutant form of lamin A responsible for Hutchinson-Gilford progeria syndrome (HGPS), a premature aging disorder characterized by excessive atherosclerosis and vascular calcification that leads to premature death, predominantly of myocardial infarction or stroke. The goal of

Forced expression of mouse progerin attenuates the osteoblast differentiation interrupting β-catenin signal pathway in vitro.

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Nuclear protein, lamin A, which is a component of inner membrane on nucleoplasm, plays a role in nuclear formation and cell differentiation. The expression of mutated lamin A, termed progerin, causes a rare genetic aging disorder, Hutchinson-Gilford progeria syndrome, which shows abnormal bone

Accumulation of prelamin A induces premature aging through mTOR overactivation.

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Hutchinson-Gilford progeria syndrome (HGPS) arises when a truncated form of farnesylated prelamin A accumulates at the nuclear envelope, leading to misshapen nuclei. Previous studies of adult Zmpste24-deficient mice, a mouse model of progeria, have reported a metabolic response involving inhibition

Inhibition of lamin A/C attenuates osteoblast differentiation and enhances RANKL-dependent osteoclastogenesis.

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Age-related osteoporosis is characterized by low bone mass, poor bone quality, and impaired osteoblastogenesis. Recently, the Hutchinson-Gilford progeria syndrome (HGPS), a disease of accelerated aging and premature osteoporosis, has been linked to mutations in the gene encoding for the nuclear

Barrier-to-Autointegration Factor influences specific histone modifications.

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Defects in the nuclear envelope or nuclear 'lamina' networks cause disease and can perturb histone posttranslational (epigenetic) regulation. Barrier-to-Autointegration Factor (BAF) is an essential but enigmatic lamina component that binds lamins, LEM-domain proteins, DNA and histone H3 directly. We

A High Throughput Phenotypic Screening reveals compounds that counteract premature osteogenic differentiation of HGPS iPS-derived mesenchymal stem cells.

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Hutchinson-Gilford progeria syndrome (HGPS) is a rare fatal genetic disorder that causes systemic accelerated aging in children. Thanks to the pluripotency and self-renewal properties of induced pluripotent stem cells (iPSC), HGPS iPSC-based modeling opens up the possibility of access to different

Aging and chronic DNA damage response activate a regulatory pathway involving miR-29 and p53.

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Aging is a multifactorial process that affects most of the biological functions of the organism and increases susceptibility to disease and death. Recent studies with animal models of accelerated aging have unveiled some mechanisms that also operate in physiological aging. However, little is known

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