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Biomedical subjects

C Haring

Publications and source records attributed to C Haring.

At least 19 recordsLinked to original sources
PubMed2002

[Classification and predictive quality of the "suicide intent" marker in parasuicides. A cluster analytic study].

The aim of the study was to investigate the discriminant and predictive quality of "suicide intent" (SIS) in relation to motives for deliberate self-harm (DSH). Cluster analysis was performed in a sample of 137 inpatients admitted to a psychiatric hospital after a DSH episode. Six different subgroups were isolated. The hypothesis was tested that the six groups would reveal distinct patterns of motives and different patterns of repeated DSH episodes during a 12-month observation period. Results indicated that one high-risk group for completed suicide was characterized by the highest death intention and remarkably low interpersonal motives. Two further groups were labeled as "moderate" risk groups. Two groups were found to be characterized by low suicide intent with prevailing patterns of distinct interpersonal oriented motives (manipulative vs appellative), whereas one group revealed an ambiguous motive structure reflecting death orientation and interpersonal motives. The DSH repetition rates were found to be significantly different between certain subgroups. The study results support the assumption that DSH patients represent heterogeneous populations with regard to suicide intent, motives, and the repetition of deliberate self-harm.

Adult↗
PubMed2001

Attempted and completed suicide in older subjects: results from the WHO/EURO Multicentre Study of Suicidal Behaviour.

OBJECTIVE: The authors present an analysis of findings for the 65 years and over age group from the WHO/EURO Multicentre Study of Suicidal Behaviour (1989-93). METHODS: Multinational data on non-fatal suicidal behaviour is derived from 1518 subjects in 16 European centres. Local district data on suicide were available from 10 of the collaborating centres. RESULTS: Stockholm (Sweden), Pontoise (France) and Oxford (UK) had the highest suicide attempts rates. In most centres, the majority of elderly who attempted suicide were widow(er)s, often living alone, who used predominantly voluntary drug ingestion. Non-fatal suicidal behaviour decreased with increasing age, whereas suicide rates rose. The ratio between fatal and non-fatal behaviours was 1:2, that for males/females almost 1:1. In the years considered, substantial stability in suicide and attempted suicide rates was observed. As their age increased, suicidal subjects displayed only a limited tendency to repeat self-destructive acts. Moreover, there was little correlation between attempted suicide and suicide rates, which carries different clinical implications for non-fatal suicidal behaviour in the elderly compared with younger subjects in the same WHO/EURO study.

Age Distribution↗
PubMed2001

[Prescription patterns and quality of information provided for consumers of benzodiazepines].

The long-time benzodiazepine use by a considerable part of the population and its adverse consequences such as somatic and cognitive side effects, interactions with other drugs and alcohol and its possible impairment of quality of life has provoked a critical discussion about the practice of prescribing benzodiazepine and the information provided by physicians. We therefore investigated these issues in admitted patients of a general hospital. All patients having been admitted to the department of Internal Medicine and taking benzodiazepine were asked by means of a semi-structured interview, which was repeated after 1 year. In 90% of later benzodiazepine discontinuers and in almost 50% of benzodiazepine continuers, tranquilisers were first prescribed during hospital admission. Only 2% of all patients estimated the information provided by the prescribing physicians as satisfying and about 2/3 reported that they did not get any information at all. 66% of all patients were informed about dependency risks. This information was mainly provided by pharmacies, friends and patient information leaflets; only about 20% of all patients were informed by the prescribing physician. Guidelines for tranquiliser prescription only seem to have a poor impact on the clinical practice. The education of physicians about the risks of low-dose dependencies and especially about complementary therapy methods needs to be improved.

Anti-Anxiety Agents↗
PubMed2001

[The consequences of a suicide for the bereaved - current knowledge, unresolved questions and tasks of future research].

UNLABELLED: Since the publication of Cain's landmark book Survivors of Suicide in 1972, the consequences of a suicide for the bereaved have been scientifically investigated. Mclntosh (1996) issued the most current bibliography of literature on the aftermath of suicide, including publications issued between 1986 and 1995. Mclntosh came to the conclusion that several unresolved issues still exist in this field of suicidology. OBJECTIVE: This paper aims at giving an overview on current knowledge of the aftermath of suicide. lt shall be investigated which questions and unresolved issues in this field still remain. This leads to a description of future tasks and challenges for researchers investigating the after effects of suicide. METHODS: At first, an overview on the most important aspects of current knowledge on the aftermath of suicide will be given. This will be done with reference to the unresolved issues and unanswered questions presented by McIntosh. How many of these issues and questions have come to a resolution after the publication of Mclntosh's bibliography shall be investigated. RESULTS: Upon examination of publications issued after 1995 it was found that several basic questions regarding the after effects of a suicide have not yet been answered in a satisfactory manner. To name a few, the term suicide survivor has not yet been clearly determined and reliable numbers as to how many people are bereaved by suicide do not exist. Moreover, a comprehensive theory regarding the consequences of a suicide for survivors is still lacking. CONCLUSIONS: Resolving these basic questions among a number of others can be seen as the main task of future research in this field. Additionally, it is pointed out that more affention should be given to the implementation of suicide postvention measures in order to alleviate the negative aftereffects of suicides.

Adaptation, Psychological↗
PubMed2000

["The WHO/EURO Multicenter Study of Suicidal Behavior": results of the Austrian research center (in Tyrol) compared with Europe].

The article presents findings from the Austrian research center (Hall/the Tyrol) participating in the WHO/EURO Multicentre Study of Suicidal Behaviour compared to the other participating European countries. Between October 1997 and March 1999 a total number of 137 interviews were conducted (70 interviews from the defined catchment area, the city and county of Innsbruck, 67 interviews from other parts of the Tyrol) with psychiatric inpatients admitted due to a parasuicidal act (a non-habitual deliberate self-harm episode). Comparison with the total number of psychiatrically treated parasuicides in Tyrol during the same period of time showed the interviewed sample to be representative of the whole clinical population. It was found that the Austrian sample revealed significantly higher proportions of "hard methods" than the pooled sample from the other participating European centres. A relatively high proportion of deliberate self-harm episodes was found in males. The repetition rate of parasuicides within the first 6 months after the initial parasuicide was very high (14% of the interviewed persons) compared to similar studies. An analysis of psychiatric diagnoses according to ICD-10 showed that more than 50% concerned either affective disorders or psychiatric disorders associated with substance abuse and dependence. The results indicate that the sample constitutes a high risk group for completed suicide.

Adolescent↗
PubMed2000

Methods used for parasuicide: results of the WHO/EURO Multicentre Study on Parasuicide.

BACKGROUND: National suicide statistics show remarkable differences in the frequencies of various methods used for completed suicide. The WHO/EURO Multicentre Study on Parasuicide makes possible for the first time an international comparison of the frequencies of methods used in attempted suicide, because the data are based on geographical catchment areas of medical institutions. METHOD: Ongoing standardized monitoring of attempted suicide in all medical institutions serving the catchment areas was performed in 14 centres in 12 European countries. The data analysis is based on 20,649 events involving 15,530 persons, recorded between 1989 and 1993. RESULTS: The comparison of rates per 100,000 shows striking differences between the centres. The highest rates for drug overdoses were found for female attempters in Oxford (347/100,000), Helsinki (238/100,000) and Stockholm (221/100,000). Guipuzcoa had the lowest rates (61/100,000). The differences were most prominent in the age group 15-24, with outstanding rates for women in Oxford (653/100,000), which was mainly due to the frequent use of analgesics. Szeged had outstandingly high rates for pesticides and solvents. In some centres the use of multiple methods was frequent. CONCLUSIONS: There is a need, especially for areas with high frequencies for certain methods, to understand the factors involved and to develop new and specific prevention projects and to monitor their effects. The WHO/EURO Multicentre Study on Parasuicide has proved to be a useful and reliable instrument for continuous monitoring of trends in parasuicide.

Catchment Area, Health↗
PubMed1999

Attempted suicide and major public holidays in Europe: findings from the WHO/EURO Multicentre Study on Parasuicide.

OBJECTIVE: The aim of the study was to examine the relationship between suicide attempts and major public holidays in Europe. METHOD: The analysis was based on data on 24 388 suicide attempts by persons aged 15 years or older in the period 1989-1996. Data from 13 centres (representing 11 countries) participating in the WHO/EURO Multicentre Study on Parasuicide were analysed. The analysis of the fluctuation of suicide attempts around public holidays was based on the daily number of suicide attempts for each centre. For each day in the period under examination a mean number of suicide attempts (mu) was calculated. The analysis was based on the assumption that the data followed a Poisson distribution. The observed number of daily suicide attempts was compared with the expected number of attempts. A multiplicative model for the expected number in each centre was developed. RESULTS: Before Christmas there were fewer suicide attempts than expected, and after Christmas there were approximately 40% more attempts than expected. In addition, more attempts than expected were registered on New Year's Day. In countries where people have the day off work on Whit Monday there were significantly fewer attempts during the 3 days before, but where Whit Monday is a normal working day significantly fewer attempts occurred on the Monday to Wednesday after Whit Sunday. CONCLUSION: There appears to be a transposition of a significant number of suicide attempts from before (and during) a major public holiday until after it. The division of holidays into non-working and working days showed that a 'holiday effect' could only be found around major public holidays, particularly Christmas, Easter and Whitsun. These findings support the theory of the 'broken-promise effect' for major public holidays.

Adolescent↗
PubMed1996

Suicide in south Tyrol 1980-1992: influence of affiliation to different language groups.

National suicide rates differ widely throughout Europe. The reasons for this are still unclear. Besides differences in actual suicide figures, different assessment methods and certification strategies have been suggested. This study examines the ethnic influence on suicide rates of South Tyrol, an Italian province bordering on Austria. The region has historically been under the cultural influence of both countries, with its population composed of three ethnic groups: the German-, Italian- and Ladinian-language groups. The study shows a significant correlation between the male suicide rate and the proportion of the German-language group. The ethnic suicide rates of Italian- and German-speaking people in South Tyrol were found to approximate each other, in comparison with the national rates for Italy and Austria, as a possible result of cultural interaction.

Age Factors↗
PubMed1996

The WHO-EURO Multicentre Study: risk of parasuicide and the comparability of the areas under study.

The 15 areas under study in the WHO/Euro Multicentre Study on Parasuicide vary considerably with regard to socio-economic factors, culture, life-styles, etc. In this paper, the authors discuss whether the traditional high risk factors for suicidal behavior (such as unemployment, abuse, divorce, etc.) take on different weights depending on local societal and cultural settings. Results from analyzing covariations between various background factors characteristic of the different areas under study and the frequency of attempted suicide showed weak or insignificant correlations, indicating that high-risk factors can only be identified from international pooled data with great care.

Adult↗
PubMed1996

Attempted suicide in Europe: rates, trends and sociodemographic characteristics of suicide attempters during the period 1989-1992. Results of the WHO/EURO Multicentre Study on Parasuicide.

The World Health Organization/EURO Multicentre Project on Parasuicide is part of the action to implement target 12 of the WHO programme, "Health for All by the Year 2000', for the European region. Sixteen centres in 13 European countries are participating in the monitoring aspect of the project, in which trends in the epidemiology of suicide attempts are assessed. The highest average male age-standardized rate of suicide attempts was found for Helsinki, Finland (314/100,000), and the lowest rate (45/100,000) was for Guipuzcoa, Spain, representing a sevenfold difference. The highest average female age-standardized rate was found for Cergy-Pontoise, France (462/100,000), and the lowest (69/100,000) again for Guipuzcoa, Spain. With only one exception (Helsinki), the person-based suicide attempt rates were higher among women than among men. In the majority of centres, the highest person-based rates were found in the younger age groups. The rates among people aged 55 years or over were generally the lowest. For the majority of the centres, the rates for individuals aged 15 years or over decreased between 1989 and 1992. The methods used were primarily "soft' (poisoning) or cutting. More than 50% of the suicide attempters made more than one attempt, and nearly 20% of the second attempts were made within 12 months after the first attempt. Compared with the general population, suicide attempters more often belong to the social categories associated with social destabilization and poverty.

Adolescent↗
PubMed1994

EEG alterations in patients treated with clozapine in relation to plasma levels.

It is well known that psychotropic drugs can induce EEG alterations. Dose dependence seems established; however, there are no data concerning the impact of plasma levels. The authors investigated the influence of clozapine plasma levels on the frequency of EEG alterations. Data from 29 inpatients (18 male, 11 female, 31.7 +/- 10.2 years) receiving clozapine in a dose range between 25 and 600 mg were collected prospectively. There was no psychotropic or anticholinergic comedication. All patients had normal EEGs before taking clozapine. Fifteen patients showed pathological changes (group 2) and 14 no changes (group 1). Discriminant analysis showed that EEG changes are dependent on plasma levels (P = 0.0009, plasma levels in group 1 mean 81.6 ng/ml, +/- SD 64.6, in group 2 235.7 ng/ml, +/- 169.8). A total of 72.4% of the patients were correctly classified as having either pathological EEG changes or none by this analysis. Variables such as dose, age, sex, weight and duration of treatment were not statistically relevant. It can therefore be suggested that clozapine plasma levels are a valid indicator for the appearance of electrophysiological reactions.

Adult↗
PubMed1993

Distribution of secretoneurin-like immunoreactivity in comparison with substance P- and enkephalin-like immunoreactivities in various human forebrain regions.

The distribution of secretoneurin-like immunoreactivity, a peptide derived from secretogranin II, was studied by means of immunocytochemistry and compared to the pattern of staining for substance P- and enkephalin-like immunoreactivities in the human basal forebrain, with special reference to the basal ganglia. Secretoneurin-like immunoreactivity was characterized by gel filtration and reversed-phase high pressure liquid chromatography analysis. Chromatographic analysis revealed a single peak for secretoneurin-like immunoreactivity. No secretoneurin-immunopositive forms of high molecular weight were found. Secretoneurin-like immunoreactivity appeared mainly in dot- and fibre-like structures. In addition, a band-like terminal staining (woolly fibres) that has been shown by others for substance P- and enkephalin-like immunoreactivities, was also observed for secretoneurin-like immunoreactivity. Medium-sized cells were found arranged in clusters or singly within the caudate and putamen. In the basal ganglia, a high density of secretoneurin-like immunoreactivity was found in the internal segment of the globus pallidus, the ventral pallidum and in the pars reticulata of the substantia nigra. In these areas the immunostaining appeared mainly as woolly fibres. The bed nucleus of the stria terminalis and medial amygdala displayed a high density of fine beaded secretoneurin-like immunoreactive fibres, sometimes forming pericellular contacts. The nucelus basalis of Meynert was highly innervated by secretoneurin-like immunoreactive fibres, mainly in the form of woolly fibres. In general, a large overlap was found between secretoneurin- and substance P-like immunoreactivity in all examined areas of the basal ganglia. In the bed nucelus of the stria terminalis and medial amygdala secretoneurin-like immunoreactivity was distributed very similarly to enkephalin-like immunoreactivity. These data provide evidence that in different subsets of neurons and neuronal pathways secretoneurin-like immunoreactivity coexists with substance P- and enkephalin-like immunoreactivity in several areas of the human brain.

Adult↗
PubMed1992

Calcitonin gene-related peptide in the brain. Neurochemical and behavioral investigations.

CGRP in the amygdala is concentrated in an area close to the central nucleus. High potassium releases CGRP, and this release, as well as the tissue concentration of CGRP in the amygdala, can be influenced by neuroleptic drugs. Both molecular forms, alpha- and beta-CGRP, are present in the amygdala in a ratio of approximately 3:1. CGRP influences social behavior in chicken. Therefore, CGRP may have a prominent role in psycho-behavioral function and may be a target for action and/or side effects of antipsychotic drugs.

Amygdala↗
PubMed1992

Effects of bright artificial light on monoamines and neuropeptides in eight different brain regions compared in a pigmented and nonpigmented rat strain.

Seasonal affective disorder is a form of depression which recurs at the same time of the year. Exposure to bright artificial light at a dose of 2,500 lux is used to treat seasonal affective disorders. We exposed a pigmented (Brown Norway) and a nonpigmented (Sprague-Dawley) rat strain with bright artificial light for 21 days at two doses (2,500 and 6,100 lux) and analyzed dopamine, dihydroxyphenyl-acetic acid, 5-hydroxytryptamine (5-HT), and 5-hydroxyindole-acetic acid (5-HIAA) by high performance liquid chromatography (HPLC) and electrochemical detection in eight different brain regions. Furthermore, we measured tissue levels of substance P (SP), neurokinins (NK), vasoactive intestinal polypeptide (VIP), calcitonin gene-related peptide (CGRP), and neuropeptide Y (NPY) with radioimmunoassay. Our data obtained with light microscopy show that bright artificial light at both doses induced a massive destruction of photoreceptors in the retina of albino rats but not of the pigmented rat strain. Retinal lesion of photoreceptors resulted in increased tissue levels of all measured neuropeptides except SP in the hypothalamus and increased VIP in the ventral tegmental area/substantia nigra. Furthermore, increased 5-HT and 5-HIAA tissue levels were found in the ventral tegmental area/substantia nigra. In contrast, in the frontal cortex there was a significant reduction in 5-HIAA tissue levels and a decreased 5-HIAA/5-HT ratio, indicating decreased 5-HT metabolism. Light exposure of the pigmented rat strain revealed no changes in the measured biogenic amines and neuropeptides in any investigated brain region. Our data suggest that retinal lesion but not direct visual neurotransmission induced changes in neurotransmitters in some brain regions. We conclude that Brown Norway rats but not Sprague-Dawley rats are useful to study neurochemical effects of bright artificial light. However, Sprague-Dawley rats may be a useful tool to study biochemical mechanisms of photoreceptor damage by bright light.

Animals↗
PubMed1992

Calcitonin gene-related peptide in patients with and without early reperfusion after acute myocardial infarction.

Plasma concentrations of calcitonin gene-related peptide (CGRP), a potent regulator of vascular tone, creatine kinase, myoglobin, and cardiac troponin T were assessed in 31 patients with acute myocardial infarction. In patients who had sustained acute myocardial infarctions, maximum CGRP concentrations (median, 3.2 pmol/L; interquartile range, 1.5 to 4.8 pmol/L) were markedly elevated as compared with healthy control subjects (n = 23; median, 1.02 pmol/L; p = 0.02). However, no marked differences in CGRP levels were observed between patients with early reperfusion (n = 19; median, 3.5 pmol/L) and patients without early reperfusion (n = 12; median, 2.6 pmol/L; p = 0.96), as well as between those with congestive heart failure (n = 8; median, 3.9 pmol/L) and those without congestive heart failure (n = 23; median, 3.2 pmol/L; p = 0.62). CGRP did not correlate closely with myocardial protein release or hemodynamic parameters (heart rate and blood pressure) or the occurrence of arrhythmias. Therefore we conclude that elevated peripheral venous CGRP concentrations in patients who have sustained an acute myocardial infarction are independent of successful reperfusion and hemodynamic state. Although the cause of CGRP increase is not yet identified, CGRP may play a role in the regulation of coronary vascular tone in patients after acute myocardial infarction.

Adolescent↗
PubMed1992

Zotepine in the treatment of schizophrenic patients with prevailingly negative symptoms. A double-blind trial vs. haloperidol.

Zotepine, a neuroleptic agent with additional 5-HT2 blocking properties, was compared with haloperidol in the treatment of schizophrenic patients with predominantly negative symptoms using a double-blind design. During the investigation period zotepine treated patients showed significant improvements in all rating instruments whereas haloperidol treated patients did not. Patients in the zotepine group developed fewer clinical side effects. The results of the presented study confirm the positive impressions gained in earlier open trials with zotepine.

Adult↗
PubMed1992

Parasuicide in Europe: the WHO/EURO multicentre study on parasuicide. I. Introduction and preliminary analysis for 1989.

The WHO/EURO multicentre study on parasuicide is a new, coordinated, multinational, European study that covers two broad areas of research: monitoring trends in the epidemiology of parasuicide (epidemiological monitoring study); and follow-up investigations of parasuicide populations, with a view to identifying the social and personal characteristics predictive of future suicidal behaviour (repetition prediction project). This article provides background information on the development and organization of the multicentre study, and presents selected findings from the epidemiological monitoring project, based on a preliminary examination of data collected in 15 centres on parasuicides aged 15 years and over treated in health facilities in defined catchment areas during the year 1989. The overall parasuicide incidence varied considerably across the centres, from a high (event) rate of 414 per 100,000 males in Helsinki to a low of 61 among males in Leiden. The highest female event rate was 595 in Pontoise, and the lowest 95 in Guipuzcoa. The mean event rate across all centres was 167 among males and 222 among females. Parasuicide incidence tended to be elevated among 15- to 34-year-olds, with lowest rates among those aged 55 years and over. With one exception (Helsinki), the female parasuicide rate was higher than the male rate, the F:M ratio ranging from 0.71:1 to 2.15:1, with a median of 1.5:1 (events). Short-term repetition rates (as measured by the event:person ratio) differed between centres, from 1.03 to 1.30 (median = 1.12) among males, and from 1.07 to 1.26 (median = 1.13) among females. Although we warn against generalizing from our findings to make statements about differences in parasuicide between countries, we argue that the differences between centres are valid and should be addressed in further research.

Adolescent↗