Search PubMed⌕ Search

Biomedical subjects

J R Hunt

Publications and source records attributed to J R Hunt.

65 records · Page 4Linked to original sources
PubMed1981

Scalp avulsion.

Explore the source record for details and available documents.

Accidents, Occupational↗
PubMed1981

Microspheres in cardiac lymph: control and ischemic states.

The cardiac lymph from conscious animals was monitored for the presence or absence of radiolabelled 15 micrometer microspheres during: 1) control periods after left atrial injection of microspheres and b) after circumflex coronary artery (CFX) occlusions (10--20 min total or less than 40 mins 50% of control flow) followed by full reperfusions. Microspheres (15 mu) numbering 7--150 were present in the lymph within 2 hrs after the occlusions; and in three experiments, the presence of a small number in the lymph on the following day implied continual release overnight. No microspheres were present in 8--48 hr lymph samples prior to occlusions. This study suggests that some microspheres escape from the intravascular space of the myocardium and are channeled into the cardiac lymphatics; this is apparent even after short-term ischemic events.

Animals↗
PubMedDate not supplied

The dynamic nature of zinc availability from foods in vivo. Implications for in vitro methods.

This paper presents a review of data from animal experiments demonstrating that the relative availability of zinc from foods is affected by an interaction between the source and amount of zinc consumed. Zinc availability from foods was determined by whole body counting after feeding 65Zn-labeled meals containing varying amounts of zinc. Relative to availability from zinc chloride, zinc availability from foods such as chicken, milk, and peanut butter was greater when determined using 98 rather than 16 micrograms zinc in the meal. In rats fed the higher dose of zinc, there were greater differences in zinc availability among the 15 foods studied, and zinc availability was greater from some foods than from zinc chloride. After an in vitro enzymatic digestion, neither zinc solubility nor the partitioning of zinc between low and high molecular weight substances was useful for predicting zinc availability in vivo. These data indicate that zinc availability from food is not a constant proportion of availability from a zinc salt. In view of the dynamic nature of zinc availability in vivo, the inability to accurately simulate different physiological responses to varying quantities of certain foods may limit the usefulness of in vitro methods.

Animals↗
PubMedDate not supplied

Dietary supplements in women: responsible strategies for use.

The Dietary Supplement Health and Education Act of 1994 defined dietary supplements and helped to fuel the use of these products in the United States. Supplement users tend to be older, white, and female, and believe that diet affects health. Dietary supplements cannot replace a healthy diet, although they can be a valuable adjunct. Some supplements, notably iron and vitamin A, can cause toxicity in excess doses. Nutrient supplements that are particularly important for women include folic acid (during the childbearing years), calcium, and vitamin B12 (after age 50 years).

Dietary Supplements↗
PubMedDate not supplied

The potential for contamination of continuous epidural catheters.

In cultures from 102 patients undergoing continuous epidural catheterization, 22 catheters were found to be contaminated. No statistically significant correlation could be established between the contaminated catheters and the parameters monitored. A worrisome trend of contamination seemed to be developing in association with hospital-prepared epidural trays as well as the procedure of vaginal delivery. Hypotheses for these observations together with current prophylactic measures are discussed. One significant clinical infection occurred; a brief report of this patient is included.

Adult↗