Search PubMed⌕ Search

Biomedical subjects

J Haines

Publications and source records attributed to J Haines.

At least 37 records · Page 2Linked to original sources
PubMed1999

The self-mutilative nature of severe onychophagia: a comparison with self-cutting.

OBJECTIVE: To investigate the psychophysiological pattern associated with severe and mild onychophagia, and to compare this pattern with that demonstrated by previous research on self-cutting. METHOD: Comparisons between the psychophysiological responses accompanying 3 behaviours were made using a guided imagery methodology. Imagery of nail-related, skin-cutting, and neutral events were presented in 4 stages. RESULTS: Experiment I distinguished participants exhibiting severe and mild onychophagia by the severity and frequency of nail-biting and by the pattern of psychophysiological response across the stages. Experiment II indicated that the change in psychophysiological arousal accompanying severe onychophagia was not as dramatic as that demonstrated for skin-cutting. The behaviour seems to be less effective in reducing tension. CONCLUSION: Severe onychophagia appears to manage the level of tension experienced by an individual, instead of dramatically reducing it in times of crisis. Such a process is consistent with that demonstrated in individuals with obsessive-compulsive disorder.

Adult↗
PubMed1999

Stepping online.

Explore the source record for details and available documents.

Humans↗
PubMed1998

Severe morbid onychophagia: the classification as self-mutilation and a proposed model of maintenance.

OBJECTIVES: The aim of this review is to make a distinction between a mild and a severe form of onychophagia (nailbiting) that has not been adequately recognised in clinical research. Furthermore, the aim is to emphasise the need for greater understanding of the motivation for such self-injury as occurs in the severe form. The purpose of making the distinction is to evaluate whether a label of self-mutilation can be applied to the severe form. If this is the case, the tension-reduction model of self-mutilation can be proposed as the mechanism which may maintain the behaviour in the face of serious social and physical consequences. METHOD: Examination was made of the literature relating to onychophagia and to self-mutilation. Treatment studies of onychophagia were examined to evaluate the mechanisms by which the behaviour may be maintained. RESULTS: Considering the self-mutilative nature of the severe form and the common theme of tension reduction in the literature on onychophagia, application of the tension-reduction model of self-mutilation is warranted. CONCLUSION: There is a need for empirical research as to the tension-reducing nature of severe onychophagia.

Anxiety↗
PubMed1998

Nurses in the media.

Explore the source record for details and available documents.

Communications Media↗
PubMed1997

Hepatic origin of cholesteryl oleate in coronary artery atherosclerosis in African green monkeys. Enrichment by dietary monounsaturated fat.

Relationships among plasma lipoprotein cholesterol, cholesterol secretion by the isolated, perfused liver, and coronary artery atherosclerosis were examined in African green monkeys fed diets containing cholesterol and 35% of calories as fat enriched in polyunsaturated, monounsaturated, or saturated fatty acids. The livers of animals fed monounsaturated fat had significantly higher cholesteryl ester concentrations (8.5 mg/g wet wt) than the livers of the other diet groups (3.65 and 3.37 mg/g wet wt for saturated and polyunsaturated fat groups, respectively) and this concentration was highly correlated with plasma cholesterol and apoB concentrations in each diet group. Cholesteryl oleate was 58 and 74. 5% of the liver cholesteryl ester in the saturated and monounsaturated fat groups. In each diet group, perfusate cholesteryl ester accumulation rate was highly correlated to liver and plasma cholesterol concentrations, and to plasma LDL cholesteryl ester content. Cholesteryl oleate was 48 and 67% of the cholesteryl esters that accumulated in perfusate in the saturated and monounsaturated fat animals, and this percentage was very highly correlated (r = -0.9) with plasma apoB concentration. Finally, in these two diet groups, liver perfusate cholesteryl ester accumulation rate was well correlated (r >/= 0.8) to coronary artery cholesteryl ester concentration, a measure of the extent of coronary artery atherosclerosis that occurred over the five years of diet induction in these animals. These data define an important role for the liver in the cholesteryl oleate enrichment of the plasma lipoproteins in the saturated and monounsaturated fat groups, and demonstrate strong relationships among hepatic cholesteryl ester concentration, cholesteryl ester secretion, and LDL particle cholesteryl ester content. The high correlation between liver cholesteryl ester secretion and coronary artery atherosclerosis provides the first direct demonstration of the high degree of importance of hepatic cholesteryl ester secretion in the development of this disease process. The remarkable degree of enrichment of cholesteryl oleate in plasma cholesteryl esters of the monounsaturated fat group may account for the relatively high amount of coronary artery atherosclerosis in this group.

Analysis of Variance↗
PubMed1997

Coping and problem solving of self-mutilators.

People who self-mutilate have been hypothesized to have deficient skills in coping and problem-solving that leave them vulnerable to the adoption of self-mutilation as a coping strategy. This hypothesis was tested using male incarcerated self-mutilators with comparisons being made with non-multilating, prisoner, and non-prisoner control groups. Examination of the inherent resources which enable an individual to effectively cope with stress demonstrated a depressed score for self-mutilators on the scale measuring self-worth and optimism about life. Assessment of the strategies used to cope with real problems demonstrated that self-mutilators engage in more problem avoidance behaviors. Self-mutilators also recorded less perceived control over problem-solving options. The results are discussed in terms of the effectiveness of self-mutilation as a coping strategy and the need to adopt a multidimensional approach to the investigation of coping.

Adaptation, Psychological↗