Xeroderma Pigmentosum (XP) is a rare autosomal recessive (AR) disease characterized by hypersensitivity of the skin to ultra violet (UV) radiation, resulting in a high frequency of UV induced skin tumors and progressive neurological complications at an early age. Through the following case report we emphasize that perioperative management of xeroderma patients entails meticulous evaluation for ...

Xeroderma pigmentosum (XP) is a genetic disorder characterised by hypo-/hyperpigmentation, increased sensitivity to ultraviolet (UV)-radiation and an up to 2000-fold increased skin cancer risk. Cells from XP-patients are defective in nucleotide excision repair (NER) responsible for repair of UV-induced DNA damage. This defect accounts for their mutator phenotype but does not predict their incre...

For isolation of the gene responsible for xeroderma pigmentosum (XP) complementation group A, plasmid pSV2gpt and genomic DNA from a mouse embryo were cotransfected into XP2OSSV cells, a group-A XP cell line. Two primary UV-resistant XP transfectants were isolated from about 1.6 X 10(5) pSV2gpt-transformed XP colonies. pSV2gpt and genomic DNA from the primary transfectants were again cotransfec...

A subset of xeroderma pigmentosum (XP) group E cells lack a factor of the UV-damaged DNA binding activity. Both 127 kDa and 48 kDa proteins have been reported to be responsible for the binding activity. A cDNA for the 127 kDa UV-damaged DNA-binding protein (p127-Ddb1) was isolated from a mouse fetal brain full length-enriched cDNA library, and an open reading frame of 1140 amino acids was ident...

Xeroderma pigmentosum (XP) is a rare recessive heredity disease caused by DNA repair impairment characterized by photosensitivity and neurologic symptoms in half of the cases. There are eight subtypes of XP: XP-A-XP-G and XP variant. Among eight subtypes, XP complementation group A (XP-A) display the lowest DNA repair ability and the severest cutaneous and neurologic symptoms. While its pathoge...

Xeroderma pigmentosum (XP) is one of a number of autosomal recessive syndromes in humans characterized by a marked predisposition to cancer. Fibroblasts from these pa tients show a defect in DMA repair. The XP hétérozygotes also show elevated skin cancer incidence, but reports concerning their DNA repair capacity are conflicting. In this study, the DNA repair capacity of four XP hétérozygot...

Xeroderma pigmentosum-variant (XPV) is one type of XP, a rare autosomal recessive disorder, and caused by defects in the post replication repair machinery while nucleotide-excision repair (NER) is not impaired. In the present study, we reported a Chinese family with XPV phenotype, which was confirmed by histopathological results. Genetic variants were detected by polymerase chain reaction and e...

BACKGROUND Atypical fibroxanthoma (AFX) is a pleomorphic tumor that most commonly presents in the elderly and arises on sun-exposed skin. METHODS We report a case of a 24-year-old white male with xeroderma pigmentosum (XP), who developed an AFX of the conjunctiva, and review the literature. RESULTS The patient presented with a rapidly growing conjunctival mass which was surgically excised a...

Nucleotide excision repair (NER) is a genome caretaker mechanism responsible for removing helix-distorting DNA lesions, most notably ultraviolet photodimers. Inherited defects in NER result in profound photosensitivity and the cancer-prone syndrome xeroderma pigmentosum (XP) or two progeroid syndromes: Cockayne and trichothiodystrophy syndromes. The heterodimer ERCC1-XPF is one of two endonucle...