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1.
Int J Legal Med ; 136(4): 1037-1049, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35013768

RESUMO

Further to a previous publication by the European Council of Legal Medicine (ECLM) concerning on-site forensic and medico-legal scene and corpse investigation, this publication provides guidance for forensic medical specialists, pathologists and, where present, coroners' activity at a scene of death inspection and to harmonize the procedures for a correct search, detection, collection, sampling and storage of all elements which may be useful as evidence, and ensure documentation of all these steps. This ECLM's inspection form provides a checklist to be used on-site for the investigation of a corpse present at a crime or suspicious death scene. It permits the collection of all relevant data not only for the pathologist, but also for forensic anthropologists, odontologists, geneticists, entomologists and toxicologists, thus supporting a collaborative work approach. Detailed instructions for the completion of forms are provided.


Assuntos
Entomologia , Medicina Legal , Antropologia , Cadáver , Medicina Legal/métodos , Patologia Legal , Humanos
2.
Int J Legal Med ; 133(1): 317-322, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29951880

RESUMO

Article 25 of the Charter of Fundamental Rights of the European Union (adopted in Nice on 7 December 2000) recognizes and respects the rights of older people to lead a life of dignity and independence and to participate in social and cultural life. It also highlights the importance of prevention and recognition of elder abuse, especially since exposure to violence is likely as the population ages, either in familial or in institutional settings. Elder abuse has some issues in common with child abuse but in spite of this fact currently is less recognized. Health professionals have a major role to play in early detection and management of cases of elder abuse. This protocol summarizes some key concepts and approaches to assist in the timely detection and investigation of elder abuse cases by healthcare professionals and forensic practitioners.


Assuntos
Abuso de Idosos/diagnóstico , Abuso de Idosos/legislação & jurisprudência , Idoso , Europa (Continente) , Avaliação Geriátrica , Humanos , Consentimento Livre e Esclarecido , Anamnese , Inquéritos e Questionários
3.
Int J Legal Med ; 132(6): 1671-1674, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29468380

RESUMO

Sexual assault is a complex situation with medical, psychological, and legal aspects. Forensic experts play a major role in terms of forensic and gynecological medical examination and evidence collection in order to maintain the chain of custody. Victims should be examined by a specially trained medico-legal examiner in order to avoid multiple examinations in the surroundings that do not meet minimum health standards. The evolution and treatment of sexual assault victims are time-intensive and should optimally be provided by a team that includes a forensic medical doctor. These guidelines will be of interest to forensic medical doctors who will have responsibility for the examination and assessment of victims of sexual violence and can be used as a day-to-day service document and/or a guide to develop health service for victims of sexual violence.


Assuntos
Vítimas de Crime , Medicina Legal/normas , Exame Físico/normas , Delitos Sexuais , Documentação/normas , Feminino , Humanos , Masculino , Anamnese , Manejo de Espécimes/normas
4.
World J Surg ; 41(7): 1790-1795, 2017 07.
Artigo em Inglês | MEDLINE | ID: mdl-28255632

RESUMO

BACKGROUND: Injuries result in 5.8 million global fatalities annually and are the leading cause of death in younger individuals. Nevertheless, population-based autopsy investigations on traumatic deaths are scarce. We set out to study all consecutive autopsies on traumatic fatalities performed in a 5-year time segment in Estonia. METHODS: After the ethics review board approval, all consecutive autopsies after blunt or penetrating deaths occurring in prehospital or in-hospital settings between January 1, 2009, and December 31, 2013, were retrospectively reviewed using the National Forensic Medicine Database. Fatalities due to suffocation, intoxication, burns, or freezing were excluded. Data collection included demographics, mechanism of injuries, cause of death, and a detailed injury profile. Primary outcome was cause of death. Secondary outcomes included injury patterns. RESULTS: Overall, 1344 autopsies were included. 75.7% of deaths were following blunt trauma. Mean age was 50.4 ± 18.5 years, and 77.1% were male. A total of 71.8% of deaths occurred in the prehospital setting. Accidents, assaults, and suicides constituted 64.4, 20.5, and 15.2% of deaths, respectively. A total of 51.1% of injury fatalities had a positive blood alcohol level (BAL). Mean injury severity score was 39.7 ± 23.9. Most common cause of death was due to head injuries at 50.5% followed by hemorrhage at 30.4%. Cardiac and aortic injuries were the predominant cause of hemorrhage-related fatalities. CONCLUSIONS: The current population-based investigation documented brain injury as the predominant cause of death followed by cardiac and aortic injuries. High incidence of positive BAL among injury fatalities requires national initiatives for alcohol harm reduction and law enforcement efforts.


Assuntos
Autopsia , Ferimentos e Lesões/mortalidade , Adulto , Idoso , Causas de Morte , Feminino , Humanos , Escala de Gravidade do Ferimento , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Centros de Traumatologia
5.
Int J Legal Med ; 131(4): 1119-1122, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-27796587

RESUMO

Forensic medical practitioners need to define the general principles governing procedures to be used for the on-site examination of a body where the death has occurred in unnatural, violent or suspicious circumstances. These principles should be followed whenever a medical expert is required to perform an on-site corpse inspection and should be utilised as a set of general guidelines to be adapted to the specific situation in hand and interpreted using common sense and scientific knowledge of the relevant procedures and facts of the case. The aim of these principles is to ensure that forensic evidence at the scene of a death is properly observed and assessed and all necessary relevant evidence gathered in order to ensure that a comprehensive report is available to the judicial authority (investigating judge or coroner) in the justice system. The on-site corpse inspection by a forensic practitioner is a mandatory and essential stage of the forensic and medico-legal autopsy, as it may provide important information for subsequent investigation stages.


Assuntos
Ciências Forenses/normas , Equipamentos e Provisões , Europa (Continente) , Humanos , Manejo de Espécimes/normas
6.
Eur J Neurol ; 22(5): 768-72, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-24948203

RESUMO

BACKGROUND AND PURPOSE: Most epidemiological studies on traumatic spinal cord injury (TSCI) have not included patients who die before hospitalization. The aim of the research was to study the incidence of TSCI by including the individuals who die at the scene of the accident in addition to data retrieved from all hospitals in Estonia. METHODS: Medical records of patients with TSCI from all hospitals in Estonia from 2005 to 2007 were studied. With collaboration from the Estonian Forensic Science Institute the data of the victims of TSCI who died before hospitalization were included. RESULTS: From 2005 to 2007, 391 TSCI cases were identified: 183 patients were found retrospectively from medical records and 208 cases were detected from autopsy reports. Fifty-three per cent of patients died before hospitalization. The annual incidence rate was 97.0 per million population (95% confidence interval 87.4-106.6). The mean age at injury was 44.4 ± 18.7 years. Motor vehicle accidents were the leading cause of TSCI amongst the individuals who died before hospitalization (75%). Falls accounted for the highest number of TSCIs (43%) amongst the patients who reached hospital. CONCLUSIONS: Our study shows that, when the cases that die at the scene of the accident are included, the incidence of TSCI in Estonia rises from 39.7 to 97.0 per million population.


Assuntos
Acidentes por Quedas/estatística & dados numéricos , Acidentes de Trânsito/estatística & dados numéricos , Traumatismos da Medula Espinal/epidemiologia , Traumatismos da Medula Espinal/mortalidade , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Estônia/epidemiologia , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto Jovem
7.
Int J Legal Med ; 129(2): 395-403, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24997533

RESUMO

Forensic experts play a major role in the legal process as they offer professional expert opinion and evidence within the criminal justice system adjudicating on the innocence or alleged guilt of an accused person. In this respect, medico-legal examination is an essential part of the investigation process, determining in a scientific way the cause(s) and manner of unexpected and/or unnatural death or bringing clinical evidence in case of physical, psychological, or sexual abuse in living people. From a legal perspective, these types of investigation must meet international standards, i.e., it should be independent, effective, and prompt. Ideally, the investigations should be conducted by board-certified experts in forensic medicine, endowed with a solid experience in this field, without any hierarchical relationship with the prosecuting authorities and having access to appropriate facilities in order to provide forensic reports of high quality. In this respect, there is a need for any private or public national or international authority including non-governmental organizations seeking experts qualified in forensic medicine to have at disposal a list of specialists working in accordance with high standards of professional performance within forensic pathology services that have been successfully submitted to an official accreditation/certification process using valid and acceptable criteria. To reach this goal, the National Association of Medical Examiners (NAME) has elaborated an accreditation/certification checklist which should be served as decision-making support to assist inspectors appointed to evaluate applicants. In the same spirit than NAME Accreditation Standards, European Council of Legal Medicine (ECLM) board decided to set up an ad hoc working group with the mission to elaborate an accreditation/certification procedure similar to the NAME's one but taking into account the realities of forensic medicine practices in Europe and restricted to post-mortem investigations. This accreditation process applies to services and not to individual practitioners by emphasizing policies and procedures rather than professional performance. In addition, the standards to be complied with should be considered as the minimum standards needed to get the recognition of performing and reliable forensic pathology service.


Assuntos
Acreditação , Patologia Legal/normas , Planejamento em Desastres/normas , Europa (Continente) , Toxicologia Forense/normas , Humanos , Laboratórios/normas , Fotografação/normas , Controle de Qualidade , Relatório de Pesquisa/normas , Medidas de Segurança/normas , Sociedades Científicas , Manejo de Espécimes/normas
8.
Forensic Sci Int ; 233(1-3): 154-7, 2013 Dec 10.
Artigo em Inglês | MEDLINE | ID: mdl-24314515

RESUMO

The aim of the present study was to describe the findings of postmortem serum and pericardial fluid (PF) cardiac troponin T (cTnT) in various causes of death with regard to the postmortem interval (PMI) and comorbid cardiovascular disease, using 101 autopsy cases with PMI of 8-141 h divided into 9 groups: cardiovascular disease (CVD), other diseases (OD), poisoning (P), asphyxia (A), drowning (D), hypothermia (H), thoracic trauma (TT), other trauma (OT) and fire fatalities (F). The results suggest that cTnT levels may help to differentiate cardiovascular death from poisoning and non-thoracic trauma, as well as to differentiate cardiovascular and other diseases as cause of death from drowning and hypothermia. However, the effect of PMI, unlike comorbid cardiovascular disease, has to be taken into account.


Assuntos
Pericárdio/metabolismo , Mudanças Depois da Morte , Troponina T/metabolismo , Adulto , Doenças Cardiovasculares/metabolismo , Feminino , Incêndios , Patologia Legal , Humanos , Hipotermia/metabolismo , Masculino , Pessoa de Meia-Idade , Intoxicação/metabolismo , Ferimentos e Lesões/metabolismo
9.
J Forensic Leg Med ; 20(1): 51-6, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23217376

RESUMO

The aim of this study is to provide an overview of deaths caused by poisoning (especially illicit drugs) in Estonia from 2000 to 2009. The data on poisoning deaths (N = 4132) were collected from the autopsy reports of the Estonian Forensic Science Institute. Ethanol poisoning was the most frequent cause of death (N = 1449, 35.1%), followed by carbon monoxide (N = 1151, 27.9%) and poisoning from illicit drugs (N = 888, 21.5%). The study included 3267 male (79.1%) and 865 female fatalities, with the prevalent age group being 35-64 years. Since 2002, deaths from fentanyles have increased sharply and remained at a high level - from 63 cases in 2002 to 138 cases in 2009. This high number indicates that in spite of the state's drug policies, illegal drugs remain easily available and that this area requires more attention. Alcohol abuse prevention policies - restrictions on alcohol advertisements in the media, limitations on sale times and anti-alcohol campaigns concerning traffic - have not brought about a significant decrease in ethanol poisoning.


Assuntos
Intoxicação/mortalidade , Adolescente , Adulto , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Intoxicação por Monóxido de Carbono/mortalidade , Depressores do Sistema Nervoso Central/sangue , Depressores do Sistema Nervoso Central/intoxicação , Criança , Estônia/epidemiologia , Etanol/sangue , Etanol/intoxicação , Feminino , Toxicologia Forense , Humanos , Drogas Ilícitas/intoxicação , Masculino , Pessoa de Meia-Idade , Preparações Farmacêuticas , Distribuição por Sexo , Adulto Jovem
10.
Curr Pharm Biotechnol ; 11(5): 510-7, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20420565

RESUMO

The pyruvate analog, 3-bromopyruvate, is an alkylating agent and a potent inhibitor of glycolysis. This antiglycolytic property of 3-bromopyruvate has recently been exploited to target cancer cells, as most tumors depend on glycolysis for their energy requirements. The anticancer effect of 3-bromopyruvate is achieved by depleting intracellular energy (ATP) resulting in tumor cell death. In this review, we will discuss the principal mechanism of action and primary targets of 3-bromopyruvate, and report the impressive antitumor effects of 3-bromopyruvate in multiple animal tumor models. We describe that the primary mechanism of 3-bromopyruvate is via preferential alkylation of GAPDH and that 3-bromopyruvate mediated cell death is linked to generation of free radicals. Research in our laboratory also revealed that 3-bromopyruvate induces endoplasmic reticulum stress, inhibits global protein synthesis further contributing to cancer cell death. Therefore, these and other studies reveal the tremendous potential of 3-bromopyruvate as an anticancer agent.


Assuntos
Glucose/metabolismo , Neoplasias/tratamento farmacológico , Neoplasias/metabolismo , Complexo Piruvato Desidrogenase/antagonistas & inibidores , Animais , Antineoplásicos Alquilantes/administração & dosagem , Glicólise/efeitos dos fármacos , Humanos , Modelos Biológicos , Piruvatos
11.
J Psychopharmacol ; 15(3): 155-9, 2001 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11565621

RESUMO

The effects of flumazenil, Ro 154513 and beta-CCM in the staircase test were studied in control and small platform (SP) stressed mice. SP stress was induced by placing mice on small platforms (3.5 cm in diameter) surrounded by water for 24 h. This model contains several factors of stress, such as rapid eye movement sleep deprivation, isolation, immobilization and falling into the water. The staircase test consisted of placing a mouse in an enclosed staircase with five steps and recording: (i) the number of rearings and (ii) steps made during 3 min. SP stress increased the exploratory activity of mice in the staircase test as demonstrated by an increase in the number of rearings and steps made. In control mice flumazenil (2.0 and 10.0 mg/kg), Ro 15-4513 (1.0 and 3.0 mg/kg) and beta-CCM (1.0 and 2.0 mg/kg) exerted an anxiogenic effect that was demonstrated by an increase in the number of rearings without significant changes in the number of steps. Similar to control mice, flumazenil induced an anxiogenic effect in SP stressed mice as demonstrated by an increase in the number of rearings. However, the sedative effect of flumazenil as demonstrated by a decrease in the number of steps made was more pronounced in SP stressed mice. In the SP stressed mice, the anxiogenic effect of Ro 15-4513 and beta-CCM was masked by their strong sedative effect and a decrease in both measures of exploratory activity (number of rearings and number of steps). These data suggest that SP stress induces hypersensitivity to the sedative effect of flumazenil, Ro 15-4513 and beta-CCM in the staircase test.


Assuntos
Nível de Alerta/efeitos dos fármacos , Azidas/farmacologia , Benzodiazepinas/farmacologia , Carbolinas/farmacologia , Reação de Fuga/efeitos dos fármacos , Comportamento Exploratório/efeitos dos fármacos , Flumazenil/farmacologia , Privação do Sono/fisiopatologia , Animais , Relação Dose-Resposta a Droga , Medo/efeitos dos fármacos , Imobilização , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Sono REM/efeitos dos fármacos , Isolamento Social , Estresse Psicológico/complicações
12.
Artigo em Inglês | MEDLINE | ID: mdl-11513357

RESUMO

Small platform (SP) stress was induced by placing mice on small platforms (3.5 cm diameter) surrounded by water for 24 h. This model contains several factors of stress like rapid eye movement (REM) sleep deprivation, isolation, immobilization and falling into the water. The staircase test consisted of placing a mouse in an enclosed staircase with 5 steps and recording (1) the number of steps and (2) rearings made during 3 min. SP stress increased the exploratory activity of mice in the staircase test as evidenced by an increase in the number of steps and rearings made In control mice diazepam (0.25 and 0.5 mg/kg) induced an anxiolytic effect in the staircase test as evidenced by a decrease in the number of rearings without changes in the number of steps. In SP stressed mice the anxiolytic effect of diazepam was not seen and the sedative effect as evidenced by a decrease in the number of steps was more pronounced. Buspirone at a dose of 1.0 mg/kg did not have effect on the behaviour of control or SP stressed mice in the staircase test. To study possible diurnal variations the staircase test was carried out at 3 different times of a day (08:00, 14:00, 20:00) with control and SP stressed mice. The exploratory activity of control mice in the staircase test gradually increased from 08:00 to 20:00 as evidenced by an increased number of steps and rearings made. SP stress increased the exploratory activity of mice irrespective of the time of testing. In conclusion, on the basis of these data the authors can propose that SP stress increases the exploratory activity of mice in the staircase test and induces a hyposensitivity of mice to the anxiolytic effect of diazepam. The effect of SP stress on the behaviour of mice in the staircase test is not caused by the disruptance of diurnal rhythms.


Assuntos
Comportamento Exploratório/fisiologia , Estresse Fisiológico/fisiopatologia , Animais , Ansiolíticos/farmacologia , Ansiolíticos/uso terapêutico , Buspirona/farmacologia , Buspirona/uso terapêutico , Ritmo Circadiano/efeitos dos fármacos , Ritmo Circadiano/fisiologia , Diazepam/farmacologia , Diazepam/uso terapêutico , Comportamento Exploratório/efeitos dos fármacos , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Estresse Fisiológico/tratamento farmacológico , Estresse Fisiológico/psicologia
13.
Alcohol Alcohol ; 36(3): 193-8, 2001.
Artigo em Inglês | MEDLINE | ID: mdl-11373254

RESUMO

The effects of the nitric oxide synthase (NOS) inhibitor 7-nitroindazole (7-NI) on the behaviour of mice after chronic and acute ethanol administration were studied. Male albino mice received ethanol by inhalation for 25 days. The plus-maze and staircase tests were carried out with control, ethanol-intoxicated and ethanol-withdrawn mice (7.5 h after the end of ethanol administration). The administration of NOS inhibitor 7-NI [20.0 mg/kg, intraperitoneally (i.p.)] 60 min or 7.5 h before the plus-maze test induced an anxiolytic effect in control mice. Chronic ethanol administration induced an anxiolytic, and ethanol withdrawal an anxiogenic, effect in mice. The administration of 7-NI (20.0 mg/kg, i.p.) caused behavioural depression in ethanol-intoxicated mice, but had no effect on the behaviour of ethanol-withdrawn mice. 7-NI had no effect on the behaviour of control mice in the staircase test. Chronic ethanol administration increased, and ethanol withdrawal decreased, the locomotor activity of mice in the staircase test. Likewise, in the plus-maze test, administration of 7-NI caused behavioural depression in ethanol-intoxicated mice, but had no effect on the behaviour of ethanol-withdrawn mice. In additional experiments, vehicle or 7-NI (20.0-120.0 mg/kg, i.p.) were administered 30 min before ethanol (3.0 g/kg, i.p.). 7-NI dose-dependently increased the duration of ethanol-induced sleep and inhibited ethanol clearance. On the basis of these data we can propose that the NO system has no major role in behavioural changes caused by ethanol withdrawal. At the same time NOS inhibitors can cause synergistic CNS depression with ethanol.


Assuntos
Comportamento Animal/efeitos dos fármacos , Depressores do Sistema Nervoso Central/farmacologia , Inibidores Enzimáticos/farmacologia , Etanol/farmacologia , Indazóis/farmacologia , Óxido Nítrico Sintase/antagonistas & inibidores , Animais , Ansiedade/psicologia , Depressores do Sistema Nervoso Central/sangue , Depressores do Sistema Nervoso Central/farmacocinética , Relação Dose-Resposta a Droga , Etanol/sangue , Etanol/farmacocinética , Masculino , Camundongos , Sono/efeitos dos fármacos
14.
Fundam Clin Pharmacol ; 14(5): 487-91, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-11129089

RESUMO

Small platform stress was induced in male BALB/c mice by placing them on small platforms (d = 3.5 cm) surrounded by water for 24 or 72 h. This experimental model contains several factors of stress, like rapid eye movement (REM) sleep deprivation, isolation, immobilization and falling into the water. After 24 h small platform stress exposure latency to sleep was measured after the administration of the benzodiazepine receptor agonist diazepam (1.0 and 2.5 mg/kg, i.p.) and the benzodiazepine receptor inverse agonist Ro 15-4513 (1.0 mg/kg, i.p.). As could be expected, diazepam significantly shortened the latency to sleep. Surprisingly the administration of Ro 15-4513 also shortened the latency to sleep. In addition [3H]Ro 15-4513 binding was measured in the cerebellum of control and small platform stressed mice. Small platform stress for 24 h did not alter the maximal number of [3H]Ro 15-4513 binding sites (Bmax) and decreased their affinity (K(D)). Small platform stress for 72 h significantly increased the number of [3H]Ro 15-4513 binding sites and decreased their affinity. These effects were due to changes in diazepam-sensitive binding. In conclusion, it could be supposed that exposure of mice to small platform stress causes changes in the function of the [3H]Ro 15-4513 binding sites, probably a shift of binding sites toward agonist conformation, that leads to changes in the effects of Ro 15-4513.


Assuntos
Azidas/metabolismo , Benzodiazepinas/metabolismo , Cerebelo/metabolismo , Estresse Fisiológico/metabolismo , Marcadores de Afinidade/metabolismo , Análise de Variância , Animais , Ansiolíticos/farmacologia , Cerebelo/efeitos dos fármacos , Diazepam/farmacologia , Agonistas de Receptores de GABA-A , Antagonistas de Receptores de GABA-A , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Trítio
15.
Pharmacol Res ; 42(3): 235-7, 2000 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-10945929

RESUMO

The effect of baclofen on the locomotor activity of control and small-platform-stressed mice was studied. In the small platform technique, mice are forced to stay on small platforms (d= 3.5 cm) surrounded by water for 24 h. Small platform stress increased the locomotor activity of mice in the actometer. Baclofen administered at doses of 0.25, 0.5 and 1.0 mg kg(-1)(i.p.) had no effect on the locomotor activity of control mice. In small-platform-stressed mice, the locomotor depressant effect of baclofen was pronounced, being statistically significant at a dose of 1.0 mg kg(-1). These data suggest that small platform stress induces hypersensitivity of mice to the motor depressant effect of baclofen. On the basis of these data it could be proposed that small platform stress induces changes in the function of GABA(B)receptors and that GABA(B)receptors participate in the behavioural changes caused by small platform stress.


Assuntos
Baclofeno/farmacologia , Agonistas GABAérgicos/farmacologia , Atividade Motora/efeitos dos fármacos , Privação do Sono , Estresse Fisiológico/psicologia , Animais , Relação Dose-Resposta a Droga , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Receptores de GABA-B/efeitos dos fármacos
16.
J Biol Chem ; 275(34): 26551-5, 2000 Aug 25.
Artigo em Inglês | MEDLINE | ID: mdl-10875927

RESUMO

The majority of breast carcinomas show reduced or no expression of the transcription factor, HOXA5. Recently, we have shown that HOXA5 is a potent transactivator of p53 in breast cells and thus may affect the response of breast cancer cells to DNA damage. To determine whether HOXA5 played a role in growth and homeostasis in breast cells, we studied its interaction with the progesterone receptor. The progesterone receptor (PR) belongs to the superfamily of nuclear receptors whose members co-ordinate morphogenesis of the mammary gland in response to binding to their cognate ligands. An increased expression of the endogenous PR gene was seen in MCF-7 cells following induced expression of an exogenously transfected HOXA5 gene. HOXA5, but not HOXB4, -B5, or -B7 activated the PR promoter in two breast cancer cell lines, MCF-7 and Hs578T. Deletion and mutation analysis of the promoter identified a single HOXA5-binding site required for transactivation of the PR gene by HOXA5. HOXA5 binds directly to this site in the PR promoter. Thus, HOXA5 may behave as a transcriptional regulator of multiple target genes, two among which are p53 and the progesterone receptor.


Assuntos
Proteínas de Homeodomínio/fisiologia , Fosfoproteínas/fisiologia , Receptores de Progesterona/biossíntese , Fatores de Transcrição/fisiologia , Sequência de Bases , Sítios de Ligação , Neoplasias da Mama/genética , Neoplasias da Mama/metabolismo , Feminino , Regulação Neoplásica da Expressão Gênica , Genes Reporter , Humanos , Luciferases/genética , Dados de Sequência Molecular , Receptores de Progesterona/genética , Células Tumorais Cultivadas
17.
Pharmacol Toxicol ; 86(2): 63-7, 2000 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-10728916

RESUMO

The aim of this work was to study the effects of the nitric oxide synthase inhibitor N(G)-nitro-L-arginine (L-NOARG) on the sedative and toxic effects of ethanol in rats. Ethanol at a dose of 3 g/kg, intraperitoneally induced sleep in rats (sleep time: 111.2+/-10.3 min.). Administration of the nitric oxide synthase inhibitor L-NOARG (20 and 40 mg/kg, intraperitoneally) 30 min. before ethanol significantly increased the duration of ethanol-induced sleep. L-NOARG at doses of 20 and 40 mg/kg reduced the exploratory activity of rats in the open-field test and significantly enhanced the sedative effect of ethanol in this test. It is possible that this effect is not caused by the interaction of ethanol with nitric oxide pathways but by synergistic CNS depression caused by ethanol and L-NOARG. L-NOARG (20 and 40 mg/kg) had no effect on ethanol concentrations in blood after acute ethanol administration (2 and 3 g/kg). Moreover, the combined administration of ethanol (2 g/kg) and L-NOARG (20 and 40 mg/kg) caused a decrease in the body weight of animals, observed for 14 days. Also, livers of these rats were studied for necrosis and connective tissue reaction. In histological studies L-NOARG at a dose of 40 mg/kg had no effect on hepatic necrosis caused by the acute administration of ethanol but strengthened connective tissue reaction. L-NOARG is widely used in pharmacological studies, including those concerning the effects of ethanol. However, on the basis of our data the possibility of toxic interactions with ethanol should be considered.


Assuntos
Inibidores Enzimáticos/farmacologia , Etanol/toxicidade , Cirrose Hepática Experimental/etiologia , Fígado/efeitos dos fármacos , Óxido Nítrico Sintase/antagonistas & inibidores , Nitroarginina/farmacologia , Animais , Nível de Alerta/fisiologia , Peso Corporal/efeitos dos fármacos , Sinergismo Farmacológico , Ingestão de Alimentos/efeitos dos fármacos , Inibidores Enzimáticos/administração & dosagem , Etanol/administração & dosagem , Etanol/sangue , Comportamento Exploratório/efeitos dos fármacos , Injeções Intraperitoneais , Fígado/patologia , Cirrose Hepática Experimental/tratamento farmacológico , Cirrose Hepática Experimental/patologia , Masculino , Nitroarginina/administração & dosagem , Ratos , Ratos Wistar , Sono/efeitos dos fármacos , Sono/fisiologia
19.
J Clin Epidemiol ; 51(7): 577-80, 1998 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-9674664

RESUMO

The present study was undertaken to investigate the in-hospital and the out-of-hospital mortality rate from ischemic heart disease (IHD). The age-related incidence of acute myocardial infarction (AMI) and the number of sudden coronary deaths (SCD) in males in South Estonia with the population of approximately 400,000 inhabitants were subjected to comparative analysis covering a period of 17 years (1980-1996). The annual AMI incidence rate per 100,000 males was 30.8 (95% CI, 27.2-34.4) in the younger age group (20-39) and 393.1 (382-404) in the older age group (40-84); the rates for SCD were 19.2 (16.4-22) and 120 (114-126), respectively. The ratio of annual incidence rate of SCD/AMI in the younger group was significantly higher than that in the older group (chi2 = 5.23; P < 0.05). Thus, the out-of-hospital SCD seems to be of even more relative importance in the total mortality from IHD in young males than it is in older males.


Assuntos
Morte Súbita Cardíaca/epidemiologia , Mortalidade Hospitalar , Infarto do Miocárdio/mortalidade , Adulto , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Autopsia , Causas de Morte , Estônia/epidemiologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Vigilância da População , Distribuição por Sexo
20.
Alcohol Alcohol ; 33(6): 609-15, 1998.
Artigo em Inglês | MEDLINE | ID: mdl-9872349

RESUMO

The aim of this work was to study the effects of the nitric oxide synthase (NOS) inhibitors 7-nitroindazole (7-NI) and NG-nitro-L-arginine (L-NOARG) on the effects and pharmacokinetics of ethanol in rats. Ethanol at a dose of 4 g/kg, i.p. induced sleep in rats (sleep time: 117.2+/-30.7 min). Administration of the NOS inhibitors 7-NI (20 mg/kg, i.p.) and L-NOARG (20 mg/kg, i.p.) 30 min before ethanol significantly increased the duration of ethanol-induced sleep. L-NOARG also significantly increased the toxicity of ethanol as evidenced by increased post-experimental lethality. Ethanol at a dose of 2 g/kg (i.p.) did not induce sleep in vehicle-treated rats; however, the combined administration of ethanol (2 g/kg) and 7-NI at doses of 40, 80, and 120 mg/kg caused sleep, for 49.4+/-3.7, 204.0+/-13.3, and 447.5+/-62.8 min, respectively. L-NOARG (20 mg/kg) had no effect on ethanol concentrations in blood after acute ethanol administration (4 g/kg). 7-NI in lower doses (20 and 40 mg/kg) had no effect and in higher doses (80 and 120 mg/kg) significantly slowed ethanol clearance during the 12 h after ethanol administration. The effect of 7-NI (20 mg/kg) on ethanol pharmacokinetics after chronic ethanol administration (inhalation for 18 days) was also studied. The administration of 7-NI immediately after the end of ethanol exposure had a pronounced effect on ethanol pharmacokinetics; in 7-NI-treated rats the fall in ethanol concentrations was significantly slower as compared with vehicle-treated rats. In 7-NI-treated rats, blood-ethanol levels were higher at 3, 6, 9, and 12 h after the end of ethanol exposure.


Assuntos
Inibidores Enzimáticos/farmacologia , Etanol/farmacocinética , Indazóis/farmacologia , Óxido Nítrico Sintase/antagonistas & inibidores , Nitroarginina/farmacologia , Animais , Etanol/administração & dosagem , Etanol/farmacologia , Masculino , Ratos , Ratos Wistar
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