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- Lindén, Thomas, 1962, et al.
(författare)
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Protective effect of lesion to the glutamatergic cortico-striatal projections on the hypoglycemic nerve cell injury in rat striatum.
- 1987
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Ingår i: Acta neuropathologica. - 0001-6322. ; 74:4, s. 335-44
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Tidskriftsartikel (refereegranskat)abstract
- In rat striatum severe hypoglycemia causes an irreversible nerve cell injury, which does not become manifest until during the post-insult recovery period. This injury can be ameliorated by lesions of the glutamatergic cortico-striatal pathway, which suggests that an "excitotoxic" effect mediated by the glutamatergic input is the likely cause of the post-hypoglycemic nerve cell destruction. In this paper we further characterize the protective effect of abolishing the glutamatergic innervation to striatum at the ultrastructural level. Two weeks after a unilateral cortical ablation rats were subjected to 30 min of severe hypoglycemia with isoelectric EEG and killed either immediately after the insult or following 60 min of recovery induced by restoring the blood glucose levels. Immediately after the hypoglycemic insult the structure of striatum was similar on both sides (except for the changes attributable to the ablation); i.e., the neurons and their dendrites had pale cytoplasm with condensed mitochondria, sparse RER and pinpoint ribosomes. After 60 min restitution numerous striatal neurons on the non-protected, non-ablated side had turned variably dark and condensed, whereas underneath the ablation they remained similar as immediately after hypoglycemia. This sequence indicates that the most likely cause of nerve cell destruction on the non-protected side is the "excitotoxic" effect mediated by the glutamatergic innervation, which is superimposed on the action of the hypoglycemic insult per se. Furthermore, the primary condensation of neurons and their dendrites indicate existence of another type of acute "excitotoxic" nerve cell injury which differs from the previously described injury characterized by neuronal swelling.
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- von Knorring, Anne-Liis, 1945-
(författare)
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Adoption studies on psychiatric illness : epidemiological, environmental and genetic aspects
- 1983
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this study is to evaluate the outcome of adoptions and to study the gene-environment influences on psychiatric illness as well as sick-leave patterns. The material consists of 2 966 adopted persons born between 1917 and 1949, their 5 932 adoptive parents and 5 438 identified biological parents.Adopted persons had a higher incidence of personality disorders and substance abuse than non-adopted controls. Adopted men also had an increased incidence of neuroses. Adopted women had an increased sick-leave because of somatic complaints, especially upper respiratory tract infections and abdominal complaints of short duration. Somatization i.e. more than 2 sick-leaves/year because of somatic complaint together with nervous complaints was more frequent among adopted women. Women with somatization could be separated into 2 types according to the pattern of sick-leave. Type 1 ("high frequency") had frequent sick-leaves for psychiatric, abdominal and back complaints. They also had a high frequency of alcohol abuse. Type 2 ("diversiform") had more diverse complaints and had fewer sick-leaves because of nervous complaints.High frequency somatizers had biological fathers with teenage onset of criminality and frequent registrations for alcohol abuse. Diversiform somatizers had the same genetic background as adopted men with petty criminality or male limited alcoholism.No specific genetic influences on treated depression or substance abuse were found in this study. However, a non-specific vulnerability of the biological mother influenced on the risk of depression and substance abuse among adopted women.There were some indications that placement in the adoptive home between 6 and 12 months of age was associated with reactive neurotic depression in adult life. Otherwise early negative experiences in term of unstable placements before adoption did not significantly influence on psychiatric illness in adulthood.Affective disorders in the adoptive father were associated with treatment for depressions or substance abuse in the adoptee. Low social status in the part of the adoptive father increased the risk of somatization of both types in the adoptee.
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| 5. |
- Armelius, Bengt-Åke, 1944-, et al.
(författare)
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Borderline diagnosis from hospital records : reliability and validity of Gunderson's diagnostic interview for Borderlines (DIB)
- 1985
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Ingår i: Journal of Nervous and Mental Disease. - 0022-3018 .- 1539-736X. ; 173:1, s. 32-4
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Tidskriftsartikel (refereegranskat)abstract
- Two trained and experienced clinical psychologists and two nontrained students rated the sections in Gunderson's Diagnostic Interview for Borderlines (DIB) on the basis of hospital records for 16 patients (DIB-R). The results showed that both reliability and validity, i.e., correlations with an actual interview, were unexpectedly high, around .80 for the trained judges and around .55 for the nontrained judges. The conclusion is that the DIB may be used for retrospective diagnosis of borderline patients from hospital records.
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| 8. |
- Eisemann, Martin, 1950-
(författare)
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Psychosocial aspects of depressive disorders
- 1985
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The objective of this study was to elucidate the possible importance of factors from the social environment for the development of depression. As a theoretical framework, Engel's biopsychosocial model (Engel, 1980), based on systems theory, has been applied. Proceeding from the single individual (characterized by experience, personality, behaviour) as the highest level of the organismic hierarchy the following system levels have been taken into account: dyads, family, community, culture-subculture.The depressive patients (n=lll) showed to be living in a narrowed social network and to lack confiding relationships compared with a non-psychiatric control sample (n=98). The personality characteristics (e.g. anxiety, detachment, suspicion) of the patients were related to experienced loneliness, contact difficulties, social network features and leisure activities. By means of a discriminant analysis 83% of the subjects could be correctly classified. In a study of perceived parental rearing, depressives showed to have experienced lack of emotional warmth. As regards social class an overrepresentation of social class III in the subgroups of unipolar, bipolar and unspecified depression was observed.Finally, implications for treatment are discussed in favour of a combination of drug and cognitive psychotherapy. Future research strategies are also suggested.
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| 9. |
- Fernell, Elisabeth, 1948, et al.
(författare)
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Epidemiology of infantile hydrocephalus in Sweden: a clinical follow-up study in children born at term.
- 1988
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Ingår i: Neuropediatrics. - : Georg Thieme Verlag KG. - 0174-304X .- 1439-1899. ; 19:3, s. 135-142
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Tidskriftsartikel (refereegranskat)abstract
- The long-term outcome of infantile hydrocephalus (IH) in children born at term during a period of active shunt treatment was studied in a population-based survey. The series consisted of 68 children greater than or equal to 6 years old and born in 1967-78 in the south-western Swedish health care region. The clinical follow-up included neuro-paediatric assessment, Stott's test of motor impairment, the WISC test, CT and EEG analyses. Nineteen of the 68 children (28%) had cerebral palsy, 17 (25%) minor motor dysfunction and 32 (47%) no motor dysfunction; mental retardation was present in 26 (38%), 16 with an IQ 50-70 and 10 with IQ less than 50; 42 children (62%) had normal intelligence and epilepsy was found in 15 (22%). Compared with a non-shunted IH series from the 1950s, the survival of IH children had considerably increased. Of constituents characterizing the IH syndrome from the time prior to shunting, ataxia, divergent squint and the special "Cocktail-party behaviour" had significantly decreased, all of which conditions are highly related to chronic expansion of the ventricular system. The frequencies of other impairments such as mental retardation and epilepsy were fairly similar, reflecting the present increased survival of IH children with primarily non-IH-dependent brain damage. IH children with associated brain parenchymal defects had the poorest outcome, and those without had in general a much more favourable one. Thus the single most important factor for the outcome of IH was found to be the presence or absence of associated primary brain damage or maldevelopment.
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| 10. |
- Fernell, Elisabeth, 1948, et al.
(författare)
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Epidemiology of infantile hydrocephalus in Sweden. Current aspects of the outcome in preterm infants.
- 1988
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Ingår i: Neuropediatrics. - : Georg Thieme Verlag KG. - 0174-304X .- 1439-1899. ; 19:3, s. 143-145
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Tidskriftsartikel (refereegranskat)abstract
- The outcome in a population-based series of 61 Swedish preterm infants born in 1967-82 with infantile hydrocephalus (IH) was investigated. Sixteen (26%) died before the age of two years. The available information was updated when the 45 surviving children were at least four years and six months old. A structured follow-up examination was performed in the 13 children who had passed the age of six years. Among the 45 survivors, 47% had cerebral palsy, 51% mental retardation and 33% epilepsy. The overall outcome for preterm infants with IH was found to be poorer than that for fullterm ones. Prognostic factors correlating to a poor outcome were an obvious origin of IH (pre- or perinatal) and a gestational age of less than 28 weeks. It is concluded that handicapped IH children born very or extremely prematurely constitute a new, and to a large extent severely brain-damaged group that has entered the Swedish IH panorama since the end of the 1970s.
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