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Sökning: WFRF:(Druid Henrik)

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1.
  • Petersson, A, et al. (författare)
  • Toxicological findings and manner of death in autopsied users of anabolic androgenic steroids
  • 2006
  • Ingår i: Drug and Alcohol Dependence. - : Elsevier. - 1879-0046 .- 0376-8716. ; 81:3, s. 241-249
  • Tidskriftsartikel (refereegranskat)abstract
    • With the aim to characterize patterns in toxicological profile and manner of death in deceased users of anabolic androgenic steroids (AAS), a retrospective autopsy protocol study of 52 deceased users of AAS was undertaken. The AAS users were compared to 68 deceased users of amphetamine and/or heroin who were consecutively tested and found to be negative for AAS. Use of AAS was in the majority of cases (79%) associated with concomitant use of psychotropic substances. AAS-related deaths differed in several respects from deaths among users of heroin or amphetamine, most strikingly with regard to: (a) the median age at death, which was significantly lower for AAS users (24.5 years) than for users of heroin and/or amphetamine (34 and 40 years, respectively); (b) the manner of death, with AAS users dying significantly more often from homicide or suicide than users of other drugs; and (c) the body mass index (BMI), with AAS users exhibiting significantly higher BMI than users of other drugs. These results support the earlier reported association between use of AAS and use of other psychoactive substances. In addition, the data suggest that AAS users are more likely to become involved in incidents leading to violent death and have a higher risk of dying at a younger age than users of other drugs. (c) 2005 Elsevier Ireland Ltd. All rights reserved.
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2.
  • Watanabe, Hiroyuki, et al. (författare)
  • Asymmetry of the Endogenous Opioid System in the Human Anterior Cingulate : a Putative Molecular Basis for Lateralization of Emotions and Pain
  • 2015
  • Ingår i: Cerebral Cortex. - United kingdom. - 1047-3211 .- 1460-2199. ; 25:1, s. 97-108
  • Tidskriftsartikel (refereegranskat)abstract
    • Lateralization of processing of positive and negative emotions and pain suggests an asymmetric distribution of the neurotransmitter systems regulating these functions between the left and right brain hemispheres. By virtue of their ability to selectively mediate euphoria, dysphoria and pain, the m-, d- and k-opioid receptors and their endogenous ligands may subserve these lateralized functions. We addressed this hypothesis by comparing the levels of the opioid receptors and peptides in the left and right anterior cingulate cortex (ACC), a key area for emotion and pain processing. Opioid mRNAs and peptides and five “classical” neurotransmitters were analyzed in postmortem tissues from 20 human subjects. Leu-enkephalin-Arg and Met-enkephalin-Arg-Phe, preferential d-/m- and k-/m-opioid agonists demonstrated marked lateralization to the left and right ACC, respectively. Dynorphin B strongly correlated with Leu-enkephalin-Arg in the left but not right ACC suggesting different mechanisms of conversion of this k-opioid agonist to d-/m-opioid ligand in the two hemispheres; in the right ACC dynorphin B may be cleaved by PACE4, a proprotein convertase regulating left-right asymmetry formation. These findings suggest that region-specific lateralization of neuronal networks expressing opioid peptides underlyes in part lateralization of higher functions including positive and negative emotions and pain in the human brain.
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3.
  • Alkass, Kanar, et al. (författare)
  • Analysis of radiocarbon, stable isotopes and DNA in teeth to facilitate identification of unknown decedents
  • 2013
  • Ingår i: PLoS ONE. - 1932-6203 .- 1932-6203. ; 8:7, s. e69597-
  • Tidskriftsartikel (refereegranskat)abstract
    • The characterization of unidentified bodies or suspected human remains is a frequent and important task for forensic investigators. However, any identification method requires clues to the person’s identity to allow for comparisons with missing persons. If such clues are lacking, information about the year of birth, sex and geographic origin of the victim, is particularly helpful to aid in the identification casework and limit the search for possible matches. We present here results of stable isotope analysis of 13C and 18O, and bomb-pulse 14C analyses that can help in the casework. The 14C analysis of enamel provided information of the year of birth with an average absolute error of 1.8±1.3 years. We also found that analysis of enamel and root from the same tooth can be used to determine if the 14C values match the rising or falling part of the bomb-curve. Enamel laydown times can be used to estimate the date of birth of individuals, but here we show that this detour is unnecessary when using a large set of crude 14C data of tooth enamel as a reference. The levels of 13C in tooth enamel were higher in North America than in teeth from Europe and Asia, and Mexican teeth showed even higher levels than those from USA. DNA analysis was performed on 28 teeth, and provided individual-specific profiles in most cases and sex determination in all cases. In conclusion, these analyses can dramatically limit the number of possible matches and hence facilitate person identification work.
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4.
  • Bergmann, Olaf, et al. (författare)
  • Cardiomyocyte Renewal in Humans
  • 2012
  • Ingår i: Circulation Research. - : American Heart Association. - 0009-7330 .- 1524-4571. ; 110:1, s. 17-18
  • Tidskriftsartikel (övrigt vetenskapligt)
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5.
  • Bergmann, Olaf, et al. (författare)
  • Dynamics of Cell Generation and Turnover in the Human Heart.
  • 2015
  • Ingår i: Cell. - : Cell Press. - 1097-4172 .- 0092-8674. ; 161:7, s. 1566-1575
  • Tidskriftsartikel (refereegranskat)abstract
    • The contribution of cell generation to physiological heart growth and maintenance in humans has been difficult to establish and has remained controversial. We report that the full complement of cardiomyocytes is established perinataly and remains stable over the human lifespan, whereas the numbers of both endothelial and mesenchymal cells increase substantially from birth to early adulthood. Analysis of the integration of nuclear bomb test-derived (14)C revealed a high turnover rate of endothelial cells throughout life (>15% per year) and more limited renewal of mesenchymal cells (<4% per year in adulthood). Cardiomyocyte exchange is highest in early childhood and decreases gradually throughout life to <1% per year in adulthood, with similar turnover rates in the major subdivisions of the myocardium. We provide an integrated model of cell generation and turnover in the human heart. VIDEO ABSTRACT.
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6.
  • Bergmann, Olaf, et al. (författare)
  • Evidence for Cardiomyocyte Renewal in Humans
  • 2009
  • Ingår i: Science. - : American Association for the Advancement of Science. - 1095-9203. ; 324:5923, s. 98-102
  • Tidskriftsartikel (refereegranskat)abstract
    • It has been difficult to establish whether we are limited to the heart muscle cells we are born with or if cardiomyocytes are generated also later in life. We have taken advantage of the integration of carbon-14, generated by nuclear bomb tests during the Cold War, into DNA to establish the age of cardiomyocytes in humans. We report that cardiomyocytes renew, with a gradual decrease from 1% turning over annually at the age of 25 to 0.45% at the age of 75. Fewer than 50% of cardiomyocytes are exchanged during a normal life span. The capacity to generate cardiomyocytes in the adult human heart suggests that it may be rational to work toward the development of therapeutic strategies aimed at stimulating this process in cardiac pathologies.
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7.
  • Brooke, Hannah Louise, et al. (författare)
  • The Swedish cause of death register
  • 2017
  • Ingår i: European Journal of Epidemiology. - : SPRINGER. - 0393-2990 .- 1573-7284. ; 32:9, s. 765-773
  • Tidskriftsartikel (refereegranskat)abstract
    • Sweden has a long tradition of recording cause of death data. The Swedish cause of death register is a high quality virtually complete register of all deaths in Sweden since 1952. Although originally created for official statistics, it is a highly important data source for medical research since it can be linked to many other national registers, which contain data on social and health factors in the Swedish population. For the appropriate use of this register, it is fundamental to understand its origins and composition. In this paper we describe the origins and composition of the Swedish cause of death register, set out the key strengths and weaknesses of the register, and present the main causes of death across age groups and over time in Sweden. This paper provides a guide and reference to individuals and organisations interested in data from the Swedish cause of death register.
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8.
  • Carlie, Anne, et al. (författare)
  • Archaeology, forensics and the death of a child in Late Neolithic Sweden
  • 2014
  • Ingår i: Antiquity. - 0003-598X .- 1745-1744. ; 88:342, s. 1148-1163
  • Tidskriftsartikel (refereegranskat)abstract
    • The discovery of a child's skeleton in a Late Neolithic well in Sweden raises again the issue of watery rituals and human sacrifice in prehistoric societies. Analysis of diatoms from the right humerus and from the surrounding sediment indicated that the child died by drowning and had not simply been disposed of in the well after death. The scenarios of accidental drowning and murder are examined to account for this discovery. The preferred hypothesis, based on a comparative study of similar finds from north-western Europe, interprets this instead as a ritual sacrifice. The use of diatom analysis to establish drowning as the cause of death adds a new weapon into the armoury of forensic archaeology.
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9.
  • Druid, Henrik, et al. (författare)
  • A compilation of fatal and control concentrations of drugs in postmortem femoral blood
  • 1997
  • Ingår i: Journal of Forensic Sciences. - 0022-1198 .- 1556-4029. ; 42:1, s. 79-87
  • Tidskriftsartikel (refereegranskat)abstract
    • A compilation of postmortem femoral blood concentrations of drugs is presented. The samples are collected from cases in which the cause of death was: A) certified intoxication by one substance alone, B) certified intoxication by more than one substance and/or alcohol, and C) certified other cause of death without incapacitation due to drugs. The concentrations were compared with blood concentrations detected in suspected drugged drivers (D), and with previously published fatal and therapeutic concentrations. The special features of this compilation are: 1) exclusively femoral blood concentrations are quoted, 2) all analyses are based on samples handled according to a standardized, quality-controlled procedure, 3) two control groups are included, and 4) one-substance-only intoxications are separated from other intoxications. The material is based on a selection of 15,800 samples sent to the Department of Forensic Chemistry in Linkoping, Sweden, during 1992 to 1995 from the six forensic pathology units in Sweden, and the list includes 83 drugs. The compilation includes drugs, where previously published data are scarce. Furthermore, the data gathered from cases with other cause of death than intoxication (group C) constitute a new kind of reference information, which probably offers a better estimate of obviously non fatal levels in postmortem blood than any compilation of therapeutic concentrations in living subjects. The possible factors influencing postmortem drug concentrations are discussed.
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10.
  • Druid, Henrik, et al. (författare)
  • Evaluation of the role of abstinence in heroin overdose deaths using segmental hair analysis
  • 2007
  • Ingår i: Forensic Science International. - 0379-0738 .- 1872-6283. ; 168:2-3, s. 223-226
  • Tidskriftsartikel (refereegranskat)abstract
    • In the body heroin is rapidly metabolized to 6-acetylmorphine and morphine. Victims of lethal heroin overdose often present with fairly low blood concentrations of morphine. Reduced tolerance due to abstinence has been proposed to account for this finding. The aim of the present study was to examine the role of abstinence in drug-related deaths by comparing recent and past exposure to opioids using segmental hair analysis with the postmortem blood morphine concentrations in deceased heroin users. The study included 60 deceased drug addicts in the Stockholm area, Sweden. In 32 cases, death was not related to heroin intake. In 18 of the 28 heroin fatalities, opioids were absent in the most recent hair segment, suggesting a reduced tolerance to opioids. However, the blood morphine levels were similar to those found in the 10 subjects that showed continuous opioid use. Hair and blood analysis disclosed an extensive use of additional drugs that directly or indirectly may influence the opioid system. The results suggest that abstinence is not a critical factor for heroin overdose death. Obviously tolerant subjects die after intake of similar doses. Other factors, particularly polydrug use, seem to be more causally important for these deaths.
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