Adult Fanniidae associated to pig carcasses during the winter season in a semiarid environment: initial examination of their potential as complementary PMI indicators

Besides the dominant necrophagous dipteran of the families Sarcophagidae and Calliphoridae usually used for post mortem interval (PMI) estimations, species of other families such as Fanniidae have frequently been reported in forensic studies. Though less abundant, these species are prevalent in decomposing carcasses with most reports being anecdotal. In this study we identified adults of the fly family Fanniidae associated to pig carcasses located under different local environmental conditions (sun and shade) in a semiarid area at Mendoza, Argentina during the winter season. We examined the potential of species of this family as indicators of PMI by measuring abundance, time of occurrence and residency time at the carcasses. We identified six species of Fanniidae: Euryomma peregrinum Meigen, Fannia albitarsis Stein, Fannia femoralis Stein, Fannia fusconotata Rondani, Fannia heydenii Wiedemann and Fannia sanihue Domínguez and Aballay. Overall, fly abundance was higher at the sunlit than at the shaded carcass. The most abundant species at the sun was F. fusconotata while at the shaded carcass F. femoralis was the most abundant species. Based on their residency time, however, species with higher potential as PMI indicators seem to be F. heydenii and F. sanihue as their residency time at the carcass was restricted to a short period of the decomposition process. Other species were present throughout most of the decomposition process or in such a low abundance (E. peregrinum) that they were not useful as indicators. These preliminary results indicate that adults of some species of Fanniidae could act as a good complementary indicator species during the winter season. In particular, F. heydenii and F. sanihue should be the focus of further studies which should also expand to other seasons.     

Violent behaviors in drug addiction: differential profiles of drug-addicted patients with and without violence problems

This study explored the prevalence of violent behaviors in patients who are addicted to drugs. A sample of 252 addicted patients (203 male and 49 female) who sought outpatient treatment was assessed. Information on violent behaviors, sociodemographic factors, consumption factors (assessed by the European version of the Addiction Severity Index [EuropASI]), psychopathological factors (assessed by Symptom Checklist-90-Revised [SCL-90-R]), and personality variables (assessed by Millon Clinical Multiaxial Inventory [MCMI-II]) was collected. Drug-addicted patients who were associated with violent behaviors were compared on all variables with patients who were not associated with violent behaviors. The rate of drug-addicted patients with violent behaviors in this sample was 39.68% (n = 100). There were significant differences between the numbers of patients who did and did not demonstrate violence on some variables. Patients with violence problems were younger than those without violence problems and were more likely to report having been a victim of abuse. Moreover, they were significantly more likely to have experienced an overdose and showed a significantly higher score on several EuropASI, SCL-90-R and MCMI-II variables. According to these results, patients with violence control problems present with both a more severe addiction and several comorbid problems. The implications of these results for further research and clinical practice are discussed.     

Aggressors against women in prison and in the community: an exploratory study of a differential profile

The current study compares the demographic and psychopathological characteristics of 54 men, who were in prison because of a serious offence of violence against women, and of 42 men, who belonged to a program of community treatment for violence against women in the home. There were no significant differences in demographic variables between the two samples. However, from a psychopathological point of view, psychiatric antecedents and current emotional instability were much more frequent and severe in aggressors within the community. Therefore, two possible differential profiles among the violent men are presented. Implications of these results for further research and clinical practice are commented on.     

Latex agglutination for bacterial antigens and meningococcus PCR: two useful tools in legal sudden deaths

Bacterial infections are considered to be a major cause of sudden deaths. The recognition of infections caused by Neisseria meningitidis is an essential duty of medicolegal offices due to the risk of secondary cases. Since other microorganisms, such as Haemophilus influenzae and Streptococcus pneumoniae, are also involved in infectious sudden deaths, the identification of the pathogen responsible for death is essential in order to establish a positive diagnosis while also preventing secondary meningococcal cases. However, because of the unreliability of culture methods used for autopsy specimens and the fragile nature of the microorganisms, other techniques were used. In this study, the detection of specific antigens of N. meningitidis (serogroups A, B, C, Y and W135), H. influenzae type b, S. pneumoniae and Group B Streptococcus was undertaken in 40 samples from sudden death cases in legal procedures with a latex agglutination test. In addition, a meningococcus polymerase chain reaction (PCR) assay (ctrA, crgA and siaD genes) was also used as a corroboration method for positive N. meningitidis agglutinations. Eleven cases of sudden death were confirmed to be due to meningococcus while one case was confirmed to have been caused by H. influenzae type b fulminant epiglottitis. Rapid laboratory diagnosis of meningococcal infection allowed contacts management and notification to the health authorities. From the point of view of the authors, forensic diagnosis of unascertained deaths should include latex agglutination and meningococcus PCR when a fulminant infection by N. meningitidis or H. influenzae is suspected as well as in deaths where the cause is unclear.     

Genetic polymorphisms at four STR loci from the HLA region in a Venezuelan population

POPULATIONS: Whole blood samples from 74 unrelated healthy individuals were collected. The donors' sample included Venezuelan mestizos from various regions of the country, but mostly from the resident population of Caracas City. A Venezuelan mestizo is the offspring of a mating between a native Venezuelan and a person born in Europe, mainly in Spain.     

Psychological treatment of men convicted of gender violence: a pilot study in Spanish prisons

In this article, the effectiveness of a psychological treatment program for men who are in prison for committing a serious offence of gender violence is tested. The sample consisted of 52 men who were imprisoned in eight Spanish prisons. The psychological treatment was a cognitive-behavioral program, in a group format, with 20 weekly sessions that lasted for 8 months. The results showed a significant improvement of irrational beliefs, about both women and violence, as a strategy to cope with everyday difficulties and a significant decrease of psychopathological symptomatology, anger, and hostility. On the other hand, results indicated that the only difference between the patients who dropped out of treatment and those who completed it was the level of initial motivation for treatment. Implications of this study for clinical practice and future research in this field are discussed.     

Population frequency distribution of HumF13A01, HumFXIIIB, and HumLIPOL loci in the Basque Country (Northern Spain)

A population study of unrelated individuals from the Basque Country (Northern Spain) was carried out using the GenePrint STR System. The PCR products were separated on denaturing polyacrylamide gels and visualized by silver staining. Three tetrameric loci were evaluated: HumF13A01, HumFXIIIB, and HumLIPOL. All loci fit Hardy-Weinberg expectations, and independence of alleles was found between these STR loci. A comparison with other population groups indicated allele frequencies are well conserved in Caucasians, but differ from other racial groups. The calculated parameters a priori probability of exclusion (Pex) and "power of discrimination" (PD) show how informative these loci are for the determination of identity and relatedness of individuals.