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R Sayegh

Publications and source records attributed to R Sayegh.

41 records · Page 3Linked to original sources
PubMedDate not supplied

The human "peripheral-type" benzodiazepine receptor: regional mapping of the gene and characterization of the receptor expressed from cDNA.

A cDNA for the human "peripheral-type" benzodiazepine receptor (PBR) was isolated from a liver cDNA library. The 851-nucleotide probe hybridized with a approximately 1 kb mRNA in Northern blots of RNA extracted from various human tissues and cell lines. The human PBR probe was hybridized to DNA from a somatic cell hybrid mapping panel to determine that the gene maps to chromosome 22. With a regional mapping panel for chromosome 22, we localized the gene within band 22q13.31. The ligand-binding properties of the receptor expressed from the cDNA were examined in transient expression experiments and compared to the endogenous human PBR. The PBR ligand [3H]PK 11195 had high affinity for the expressed receptor in COS-1 cells, but the affinities of a pair of isoquinoline propanamide enantiomers differed remarkably in expressed and endogenous human PBR. These findings reveal that the host cell and/or post-translational modification may have an important influence on PBR function.

Base Sequence↗
PubMedDate not supplied

[A rare manifestation of hypothyroidism: intestinal obstruction. Report of 2 cases and review of the literature].

Gastrointestinal manifestations of hypothyroidism are unfrequent. They consist particularly in hypomotility, intestinal atony, and pseudoobstruction. A high index of suspicion must exist, especially in elder subjects, in order to avoid unnecessary and even harmful investigation and intervention. We are reporting two cases of intestinal occlusion due to hypothyroidism with review of the literature.

Aged↗
PubMedDate not supplied

[24-hour esophageal pH monitoring in adults. Apropos of a series of 116 patients].

Between June 1994 and June 1996, we performed a 24-hour oesophageal pH monitoring in 116 adult patients. A retrospective analysis of the data is hereby presented. The principal indications include a chronic cough, recurrent laryngitis and noncardiac chest pain. In 65.5% of our cases, a pathological gastroesophageal reflux was found during pH monitoring. The symptom-index (SI) concerning the digestive and ENT symptoms did correlate in 1/3 of the cases while it was significant in only 15% of the cases with pulmonary and cardiac symptoms. 24-hour pH monitoring remains the method of choice for the study of gastroesophageal reflux and analysis of the SI is indispensable to evaluate the correlation of symptoms with episodes of reflux.

Adolescent↗