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Biomedical subjects

G Wilkinson

Publications and source records attributed to G Wilkinson.

At least 73 records · Page 4Linked to original sources
PubMed1992

Construction and properties of a mutant of herpes simplex virus type 1 with glycoprotein H coding sequences deleted.

A mutant of herpes simplex virus type 1 (HSV-1) in which glycoprotein H (gH) coding sequences were deleted and replaced by the Escherichia coli lacZ gene under the control of the human cytomegalovirus IE-1 gene promoter was constructed. The mutant was propagated in Vero cells which contained multiple copies of the HSV-1 gH gene under the control of the HSV-1 gD promoter and which therefore provide gH in trans following HSV-1 infection. Phenotypically gH-negative virions were obtained by a single growth cycle in Vero cells. These virions were noninfectious, as judged by plaque assay and by expression of beta-galactosidase following high-multiplicity infection, but partial recovery of infectivity was achieved by using the fusogenic agent polyethylene glycol. Adsorption of gH-negative virions to cells blocked the adsorption of superinfecting wild-type virus, a result in contrast to that obtained with gD-negative virions (D. C. Johnson and M. W. Ligas, J. Virol. 62:4605-4612, 1988). The simplest conclusion is that gH is required for membrane fusion but not for receptor binding, a conclusion consistent with the conservation of gH in all herpesviruses.

Animals↗
PubMed1991

General practitioner referral to specialist psychiatric services: a comparison of practices in north- and south-Verona.

Specialist psychiatric services run by the Italian National Health Service are mainly hospital-based in North-Verona and community-based in South-Verona. Ninety-two GPs from both areas participated in a one-day survey of their provision of psychiatric care, and this paper focuses on socio-demographic and clinical variables associated with specialist psychiatric referral. The one-day prevalence figure for GP referral to specialist psychiatric services was 7.3% (17.6/10,000): the figures did not differ between the sexes or between the two areas. Whereas in North-Verona 49% of the patients referred were sent to the two local hospital-based public services and 51% to other agencies (mainly to private psychiatrists), in South-Verona 71% of referrals were to the community-based public service. Log-linear analysis showed that past psychiatric history, psychological presenting complaint, social problems and GPs' psychiatric diagnosis exerted positive joint main effects on GP referral to specialist psychiatric services, and that diagnosed organic illness had a negative effect in this regard. In the presence of a psychological complaint, a psychiatric diagnosis proved to be quite unimportant, so that those without a psychiatric diagnosis were just as likely to be referred as those with one. However, in the absence of a psychological complaint a GP diagnosis of depression greatly increased the risk of referral. Though the type of psychiatric service proved not to be an important determinant of GP referral to specialist psychiatric services it influenced the GPs' choice of referral agency.

Adolescent↗
PubMed1991

Life events, social problems and physical health status as predictors of emotional distress in men and women in a community setting.

The main aim of this study was to construct logistic models of emotional distress (defined as a GHQ-30 score of 6 or greater) in a community sample of 226 men and 225 women. The independent variables included were: sociodemographic characteristics, physical health status, social problems and undesirable life events. Univariate comparisons showed that in both sexes undesirable life events and social problems were associated with emotional distress; in men the presence of physical symptoms and widowed, separated or divorced status also showed such an association. Separate logistic regression models for men and women confirmed the importance of undesirable life events and social problems as predictors for emotional distress. In women there was also a significant interaction effect between the two variables on emotional distress. Sociodemographic characteristics and physical health status did not exert a statistically significant effect in these models.

Adaptation, Psychological↗
PubMed1991

Meta-analysis of double-blind placebo-controlled trials of antidepressants and benzodiazepines for patients with panic disorders.

Meta-analysis of 19 double-blind placebo-controlled trials of antidepressants (N = 13) and benzodiazepines (N = 6) for patients with panic disorders showed that active treatment had 25% greater success rate than placebo over a mean duration of 14 weeks. There were no statistically significant differences observed between treatment sub-groups (antidepressants--mean duration 16 weeks; and benzodiazepines--mean duration 7 weeks). On this basis antidepressants and benzodiazepines prescribed in clinical settings are likely to be equally effective in the short-term treatment of people with panic disorders.

Anti-Anxiety Agents↗
PubMed1991

Folate intake and carcinogenesis of the colon and rectum.

Experimental evidence suggests that folate depletion plays a role in carcinogenesis. A case-control study examining folate intake was conducted. Some 428 colon and 372 rectal cancer cases with matched neighbourhood controls were interviewed regarding usual intake of foods, including food preparation. Unadjusted folate was not associated with risk of either cancer. Controlling for kilocalories, odds ratios (ORs) for those with the highest folate intake were 0.5 (95% confidence interval (CI): 0.24-1.03) and 0.31 (95% CI: 0.16-0.59) for females and males for rectal cancer. There was no change in colon cancer risk associated with folate intake. There was an indication of an interaction of folate and alcohol intake; the difference in risk associated with low and high folate intake was highest for males in the highest alcohol category. Associations were of similar magnitude for other dietary factors correlated with folate. It appears that intake of folate or a correlated factor may be negatively related to risk of rectal cancer.

Alcohol Drinking↗
PubMed1991

The 1978 Italian mental health law--a personal evaluation: a review.

"The author discusses the sociopsychiatric consequences of the 1978 Italian mental health law. He also reviews the international scientific ideas that led up to it. The sociopolitical psychiatric views of the late Franco Basaglia, pioneer of the change in the mental health system of the Italian Republic, are described. Statistical reports and critical analyses are reported. Objective data, based on the author's personal experience as a practising psychiatrist in Rome, Italy, from 1969 to 1987, are given."

Activities of Daily Living↗
PubMed1990

Risks associated with source of fiber and fiber components in cancer of the colon and rectum.

In this case-control study, we examined the food sources of fiber and fiber solubility to determine whether particular components of dietary fiber were differentially associated with risk of colon and rectal cancer. In Western New York, cases with pathologically confirmed, single, primary cancers of the colon and rectum as well as age-, sex- and neighborhood-matched controls were interviewed from 1975-1986. The sample included 428 colon case-control pairs (223 females, 205 males) and 422 rectal case-control pairs (145 females, 277 males). Subjects were interviewed regarding usual quantity and frequency of consumption of foods. For the colon, risk decreased with intake of grain fiber for both females and males and with intake of fruit/vegetable fiber for males only. Insoluble grain fiber was more strongly associated with risk than soluble grain fiber. For the rectum, fruit/vegetable fiber was associated with decreased risk, whereas grain fiber was not. There was no difference in risk for soluble and insoluble fiber components for the rectum. Analysis of risk associated with fiber by food source and by components of the fiber may provide insight into possible mechanisms of a fiber effect on cancer of the colon and rectum.

Colonic Neoplasms↗
PubMed1990

Mental health and medical consultation in primary care settings.

This paper examines the effect of psychiatric morbidity, as measured by the GHQ-60, on the probability of being in contact with a primary care physician, and the socio-demographic factors which influenced this effect. We found that the presence of psychiatric morbidity emerged as a major determinant of primary care utilization in both sexes, and about one-sixth of consultations in men and one-fifth of consultations in women could be attributed to it. Logistic modelling was used to investigate the joint effect on general practitioner consultation of psychiatric morbidity and seven socio-demographic variables. Sex, age, and psychiatric morbidity exerted independent, but not interactive, effects on consultation.

Adolescent↗
PubMed1990

Diet in the epidemiology of gastric cancer.

We examined the nutritional epidemiology of gastric cancer in 293 cases and neighborhood-, age-, and sex-matched controls in communities throughout the counties of Niagara, Monroe, and Erie in western New York. The interview was highly detailed, requiring two and one-half hours to complete; it attempted to provide an estimate of total calories ingested as well as of macro- and micronutrients and behaviors that could affect alimentary exposures, such as the use of refrigeration. We found that risk was enhanced by sodium, fat, and retinol. Substantial reductions in risk were associated with ingestion of carotene, especially raw vegetables (including celery, cucumbers, carrots, green peppers, tomatoes, and onions), as well as with increased use of low-temperature food storage. Both refrigeration and carotene could inhibit oxidation products that could act as carcinogens in the stomach.

Adult↗
PubMed1990

Lifetime alcohol intake and risk of rectal cancer in western New York.

The lifetime intake of total alcohol, beer, wine, and hard liquor was measured for 277 males and 145 females with pathologically confirmed, first, single, primary cancers of the rectum in western New York from 1978 to 1986. Controls who were age, sex, and neighborhood matched were also interviewed. Intake of beer and total alcohol was positively associated with rectal cancer risk. Most of the excess risk was found for the heaviest drinkers. Odds ratios for fourth quartile intakes for males were 1.80 (95% CI, 1.12, 2.89) for total alcohol and 1.86 (1.13, 3.06) for beer. No association was found with wine or hard liquor intake. Females drank considerably less in this population; trends were similar although not of as great magnitude as those for males. Adjustment for dietary risk factors did not change risk estimates appreciably. A high lifetime intake of beer and total alcohol was associated with an increased risk of rectal cancer, and this was independent of either socioeconomic status or diet.

Adolescent↗
PubMed1990

Nutritional epidemiology of cancer of the esophagus.

This study of 178 cases of cancer of the esophagus from three counties in western New York, as compared with sex- and age-matched neighborhood controls in 1975-1986, replicated some earlier findings, particularly with regard to the increased risks associated with use of cigarettes and alcohol. The concentration of alcohol in an alcoholic beverage apparently did not affect risk: Beer carried a substantial risk, whereas less-dilute forms of alcohol carried no risk. These findings also suggest that the risk of cancer of the esophagus increases with ingestion of foods containing retinol but not carotene. Although increased risks were found to be associated with increases in total calories and fat ingested, as well as calcium, they appeared to be confounded with the risk associated with retinol, as distinct from carotene. Inasmuch as a difference in risk associated with retinol and carotene has been shown in a few previous inquiries dealing with esophageal cancer and cancer at other sites, a need for further investigations distinguishing risks associated with the two compounds is apparent.

Beer↗
PubMed1990

A case-control study of diet and rectal cancer in western New York.

In three counties in western New York, a case-control study of incident, pathologically confirmed, single, primary cancers of the rectum was conducted from 1978 to 1986. Cases were matched with neighborhood controls on age and sex; 277 case-control pairs of males and 145 case-control pairs of females were interviewed regarding usual quantity and frequency of consumption of foods. Risk of rectal cancer increased with increasing intake of kilocalories, fat, carbohydrate, and iron. Risk decreased with increasing intake of carotenoids, vitamin C, and dietary fiber from vegetables. Fiber from grains, calcium, retinol, and vitamin E were not associated with risk. Associations of intake with risk were generally stronger for males than for females except for vitamin C. The association for carotenoids, vitamin C, and vegetable fiber persisted after stratification on intake of either kilocalories or fat.

Aged↗
PubMed1990

Psychiatric morbidity and physical illness in health centres.

This study examined, in health care attenders, the effect of different sociodemographic variables and physical illness on the probability of suffering from mental disorders. In health centres, the prevalence of mental disorders was 19.3% (12.4% for males and 23.8% for females). Logistic modelling was used to investigate the joint effect on psychiatric morbidity of 6 sociodemographic variables and physical illness. It was found that sex, age, and physical illness exerted independent but not interactive effects on the probability of psychiatric morbidity.

Adolescent↗
PubMed1989

Prepare a Festschrift.

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Anniversaries and Special Events↗
PubMed1989

Validation of a computerized assessment (PROQSY) of minor psychological morbidity by Relative Operating Characteristic analysis using a single GP's assessments as criterion measures.

This is a study of the criterion validity of a newly developed computerized assessment (PROQSY) of minor psychological morbidity based on the Clinical Interview Schedule, employing a single GP's assessments as criterion measures of such morbidity and Relative Operating Characteristic (ROC) analysis. Two-stage screening was carried out with a consecutive sample of 256 patients aged 15-69 consulting an experienced GP in a semi-rural setting over a six-week period. The GP made a standardized assessment of the reason for consultation and the degree of psychological disorder present. A 40% random sub-sample was then assessed using PROQSY. The area under the ROC curve using a GP criterion of minor psychological disorder ('degree of psychological problem - mild or greater') was 0.81 (S.D. = 0.06). However, the kappa coefficient obtained between this criterion assessment and the PROQSY assessment of minor psychological problem at the observed optimal cut-off score was only 0.28 (S.E. = 0.1; Z = 2.83). It is concluded that PROQSY may be recommended for further development as a research tool providing a valid measure of minor psychological morbidity as assessed by GPs in primary care settings.

Adolescent↗
PubMed1989

Validation of 30- and 12-item versions of the Chinese Health Questionnaire (CHQ) in patients admitted for general health screening.

A study of the validity of the 30- and 12-item versions of the Chinese Health Questionnaire (CHQ) was carried out with a consecutive sample of 386 patients admitted during one year to a medical centre in Taiwan for a 3-day comprehensive general health screening. The Chinese version of the Clinical Interview Schedule was used to derive a criterion measure of minor psychiatric morbidity. The areas under the Relative Operating Characteristic curves of both short versions of the CHQ were equivalent (area = 0.85, S.D. = 0.02). The sensitivities of the CHQ-30 and CHQ-12 were found to be 76 and 78% respectively, while the specificity of both was 77%. The estimated prevalence of minor psychiatric morbidity in the sample was 37% (95% confidence intervals 32-41%). In contrast, physicians diagnosed 11% of these patients as having psychiatric disorders, and their sensitivity was 29%. Taken altogether, the above findings suggest that the CHQ-12 is as effective as and is more efficient than the CHQ-30 in this context, and could be used by physicians in similar settings to improve their identification of minor psychiatric disorders in Chinese patients.

Anxiety Disorders↗