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Biomedical subjects

G W Cochrane

Publications and source records attributed to G W Cochrane.

11 recordsLinked to original sources
PubMed2002

Molecular basis of amplification in Drosophila phototransduction: roles for G protein, phospholipase C, and diacylglycerol kinase.

In Drosophila photoreceptors, the amplification responsible for generating quantum bumps in response to photoisomerization of single rhodopsin molecules has been thought to be mediated downstream of phospholipase C (PLC), since bump amplitudes were reportedly unaffected in mutants with greatly reduced levels of either G protein or PLC. We now find that quantum bumps in such mutants are reduced approximately 3- to 5-fold but are restored to near wild-type values by mutations in the rdgA gene encoding diacylglycerol kinase (DGK) and also by depleting intracellular ATP. The results demonstrate that amplification requires activation of multiple G protein and PLC molecules, identify DGK as a key enzyme regulating amplification, and implicate diacylglycerol as a messenger of excitation in Drosophila phototransduction.

Adenosine Triphosphate↗
PubMed1981

Oesophageal stricture due to reflux oesophagitis in pregnancy. Case report.

A patient with persistent vomiting in pregnancy due to oesophageal stricture secondary to reflux oesophagitis is reported. Reflux oesophagitis is common during pregnancy but usually responds to small frequent meals, the avoidance of certain positions and simple antacid therapy. Where symptoms are persistent and become worse in late pregnancy we suggest that more energetic therapy in the form of cimetidine or alginate antacid mixture (Gaviscon) should be considered to prevent oesophageal stricture formation.

Adult↗
PubMed1981

Blood loss and side effects in day case abortion.

Suction termination of pregnancy was performed in 276 patients as an out-patient procedure under general anaesthesia. Ergometrine, oxytocin, or sterile water were given with the induction of anaesthesia. There was no significant difference in blood loss in the three treatment groups, although blood loss in termination of pregnancy performed after eight weeks was increased in all three groups. Nausea, vomiting and abdominal pain occurred significantly more often after ergometrine compared to oxytocin or water.

Abortion, Legal↗
PubMed1981

Vaginal stenosis due to bullous erythema multiforme (Stevens-Johnson syndrome). Case report.

Bullous erythema multiforme is a disorder in which oral and genital erosions, ocular inflammation and cutaneous bullae may follow a viral or bacterial infection or the ingestion of certain drugs, such as sulphonamides. Unpleasant sequelae have been reported including residual scarring, and death may occasionally result from infection or renal failure; severe scarring can cause blindness and infrequently the genital tract is involved. We report a patient who developed complete vaginal stenosis following bullous erythema multiforme in pregnancy.

Adult↗