C L Cathelineau

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Cytochrome P4501A1 (CYP1A1) plays a key role in the metabolic activation of procarcinogenic compounds, leading to skin carcinogenesis. It is therefore important to determine whether its enzymatic activity is altered by topically administered drugs. We investigated, in cultured normal human keratinocytes (NHK), the effects of retinoic acid (RA) and synthetic(More)
Sodium butyrate affects cell differentiation in confluent epidermal keratinocyte cultures by considerably increasing the spontaneous formation of cross-linked envelopes in normal human keratinocytes (NHK). It also favors the development of envelope competence in the Simian virus-40 (SV-40)-transformed human foreskin keratinocyte line SV-K14. It completely(More)
The authors report 2 familial cases of neonatal congenital lactic acidosis with pyruvate carboxylase deficiency in the liver. In both cases, disorders started immediately after birth and were characterized by major neurological symptoms, acute metabolic acidosis with hyperketonemia and hyperammonemia. Course was rapidly fatal despite intensive care,(More)
When cultured human epidermal keratinocytes (NHK) reach confluence they start to differentiate and an increase in the total cellular cholesterol content is observed. This increase parallels the appearance of a characteristic feature of terminal keratinocyte differentiation, the spontaneous formation of cornified envelopes (CE). Synthesis of CE is catalyzed(More)
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