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Biomedical subjects

H Gee

Publications and source records attributed to H Gee.

At least 19 recordsLinked to original sources
PubMed1999

Water content, raffinose, and dehydrins in the induction of desiccation tolerance in immature wheat embryos

Desiccation tolerance is initiated in wheat (Triticum aestivum L.) embryos in planta at 22 to 24 d after anthesis, at the time that the embryo water content has decreased from about 73% fresh weight (2.7 g water/g dry weight) to about 65% fresh weight (1.8 g water/g dry weight). To determine if desiccation tolerance is fully induced by the loss of a relatively small amount of water, detached wheat grains were treated to reduce the embryo water content by just a small amount to approximately 69% (2.2 g water/g dry weight). After 24 h of such incipient water loss, subsequently excised embryos were able to withstand severe desiccation, whereas those embryos that had not previously lost water could not. Therefore, a relatively small decrease in water content for only 24 h acts as the signal for the development of desiccation tolerance. Embryos that were induced into tolerance by a 24-h water loss had no detectable raffinose. The oligosaccharide accumulated at later times even in embryos of detached grains that had not become desiccation tolerant, although tolerant embryos (i.e. those that previously had lost some water) contained larger amounts of the carbohydrate. It is concluded that desiccation tolerance and the occurrence of raffinose are not correlated. Immunodetected dehydrins accumulated in embryos in planta as desiccation tolerance developed. Detachment of grains induced the appearance of dehydrins at an earlier age, even in embryos that had not been made desiccation tolerant by incipient drying. It is concluded that a small reduction in water content induces desiccation tolerance by initiating changes in which dehydrins might participate but not by their interaction with raffinose.

Journal Article↗
PubMed1998

Role of the consultant obstetrician in the delivery suite.

The role of consultant obstetricians is under considerable debate. This has particularly focused on the role of consultants in intrapartum care. The article explores the role of the consultant in delivery suite from the view point of a consultant, a clinical director, a training programme director and a chief executive. These viewpoints determine a range of common themes which mean the duties of consultants over their career lifecycle need to be addressed; the need to expand consultant posts; and the tensions which inevitably occur. The authors believe these need to be addressed because of the need to ensure consultant roles in delivery suite are developed as a key part of seeing quality improvement.

Attitude of Health Personnel↗
PubMed1998

Developing postgraduate medical education for trusts: a secret to long-term success.

The delivery of effective postgraduate education for doctors in trusts is becoming vital to secure the individual services of trusts. Increasingly, training requirements are impacting on the location of clinical services that NHS trusts provide. Failure to understand the benefits and drawbacks of providing postgraduate education could affect the long-term strategic direction of trusts. The paper seeks to identify the case for investment, the need to address key deliverables to secure effective postgraduate education and the need for clinicians and managers to evaluate the effectiveness of such training for their organisations.

Education, Medical, Graduate↗
PubMed1997

Analysis of nicotine and cotinine in the hair of hospitality workers exposed to environmental tobacco smoke.

The purpose of this study was to determine if hair nicotine and cotinine levels reflect relative exposure to environmental tobacco smoke (ETS) in subjects who worked in the hospitality industry, where public smoking was permitted. Hair samples from 26 subjects were analyzed by gas chromatograph/mass spectrometry techniques for nicotine and cotinine. An exposure gradient was shown for nicotine but not cotinine. Among nonsmokers, those working in bars where there are no public smoking restrictions had the highest hair nicotine levels, which were close to levels found in smokers. Nicotine measured in hair is useful as a biological marker for exposure to ETS from multiple sources. Bar workers in particular are exposed to high levels of ETS, which may adversely affect the health of nonsmokers.

Adult↗