New perspectives on the use of cannabis in the treatment of psychiatric disorders

Following the discovery of the endocannabinoid system and its potential as a therapeutic target for various pathological conditions, growing interest led researchers to investigate the role of cannabis and its derivatives for medical purposes. The compounds Δ9-tetrahydrocannabinol and cannabidiol are the most abundant phytocannabinoids found in cannabis extracts, as well as the most studied. The present review aims to provide an overview of the current evidence for their beneficial effects in treating psychiatric disorders, including schizophrenia, anxiety, and depression. Nevertheless, further investigations are required to clarify many pending issues, especially those relative to the assessment of benefits and risks when using cannabis for therapeutic purposes, thereby also helping national and federal jurisdictions to remain updated

Detection and genotyping of human Papillomavirus in urine samples from unvaccinated male and female adolescents in Italy

The introduction of vaccination against Human Papillomavirus (HPV) in adolescent girls in 2006 has focused virological surveillance on this age group. As few studies have evaluated HPV infections in young populations, further data are needed in order to improve and extend prophylactic policy and to monitor epidemiological changes. The present study aimed at evaluating overall and type-specific HPV prevalence in both female and male adolescents in Italy. HPV DNA detection and genotyping was performed on urine samples collected from 870 unvaccinated adolescents (369 females, 501 males, 11-18 years of age) in five cities in Italy. Following DNA extraction by means of a commercial kit (NucliSENS®-miniMAG®, bioMérieux), the L1 gene fragment was PCR amplified and genotyped by restriction fragment length polymorphism analysis. HPV DNA was detected in 1.5% of all samples, and in 3% and 0.4% of samples from females and males, respectively. In approximately 70% of HPV DNA positive adolescents, the infection was due to a single genotype, with 88.9% of genotypes belonging to the HR-clade. The only two HPV-positive boys (14 and 18 years old) had HPV-70 genotype. Only one of the 11 HPV-infected girls was in the 11-14 age-group. HPV prevalence was 4.2% in girls aged 15-18 years and 60% of infections were due to vaccine types HPV-16 or HPV-6/-11. This is one of the few studies, the first conducted in Italy, on HPV infection in adolescents. Urine testing is the easier way of detecting HPV infection in younger populations. Our data revealed a very low HPV prevalence, and no infections were observed in the 12-year-old vaccine target population. The majority of infections were seen in females aged 15-18 years. Overall, more than 50% and 30% of the potentially persistent HPV infections detected in this group could have been prevented by the quadrivalent and the bivalent vaccines, respectively

Induction of Activity-Regulated Cytoskeleton-Associated Protein and c-Fos Expression in an Animal Model of Anorexia Nervosa

Anorexia nervosa (AN) is a complex eating disorder characterized by reduced caloric intake to achieve body-weight loss. Furthermore, over-exercise is commonly reported. In recent years, animal models of AN have provided evidence for neuroplasticity changes in specific brain areas of the mesocorticolimbic circuit, which controls a multitude of functions including reward, emotion, motivation, and cognition. The activity-regulated cytoskeleton-associated protein (Arc) is an immediate early gene that modulates several forms of synaptic plasticity and has been linked to neuropsychiatric illness. Since the role of Arc in AN has never been investigated, in this study we evaluated whether the anorexic-like phenotype reproduced by the activity-based anorexia (ABA) model may impact its expression in selected brain regions that belong to the mesocorticolimbic circuit (i.e., prefrontal cortex, nucleus accumbens, and hippocampus). The marker of neuronal activation c-Fos was also assessed. We found that the expression of both markers increased in all the analyzed brain areas of ABA rats in comparison to the control groups. Moreover, a negative correlation between the density of Arc-positive cells and body-weight loss was found. Together, our findings suggest the importance of Arc and neuroplasticity changes within the brain circuits involved in dysfunctional behaviors associated with AN

Social deprivation indexes and anti-influenza vaccination coverage in the elderly in Sardinia, Italy, with a focus on the Sassari municipality

The aim of the present study was to evaluate the relationship between social deprivation indices and anti-influenza vaccine coverage in the Sardinian elderly population (over 65yearsold).This relationship was firstly observed in a regional context. An already-known deprivation index was used, and its trivial relationship with the anti-influenza vaccine coverage was evaluated. Secondly, the same relationship was assessed for the homogeneous area of the Municipality of Sassari. This required adoption of an ad hoc deprivation index, which allowed us to stratify the population into deprivation groups and to correlate the vaccine coverage to socio-economic variables.Results showed that the regional anti-influenza vaccine coverage linearly increased with the decrease in the deprivation. This trend was confirmed for the Municipality of Sassari. Pearson's analysis highlighted factors that significantly correlate to vaccine coverage.In Sardinia, the relationship between anti-influenza vaccination coverage and socio-economic health status was consistent with the international panorama, therefore highlighting the necessity to arrange interventions to promote vaccination coverage in the elderly population

Air microbial contamination in dental clinics: comparison between active and passive methods

The aim of this study was to evaluate the correlation between the microbial air contamination values obtained by active sampling (colony-forming units per cubic metre, CFU/m3) and by passive sampling (Index of microbial air contamination, IMA) and to calculate the corresponding equations. Air sampling was performed in ten dental clinics (DC), before (T0), during (T1) and after (T2) the clinical activity, for five consecutive days, once a month for a period of three months, for a total of 450 air samplings. The correlation was evaluated using the Spearman test, and a p value below 0.05 was considered statistically significant. A statistically significant correlation was found considering both the results obtained from the total observations and from the single sampling times, T0, T1 and T2. Different correlation patterns were observed stratifying by DC. Both methods were able to evaluate the microbial air quality and highlight critical situations; therefore, both can be used with this aim. However, in particular during the activity, passive sampling resulted more sensitive, and for its simplicity, economy and standardization by IMA, as suggested by several authors, can be suggested for routine monitoring

Prevalence and type distribution of human papillomavirus infection in women from North Sardinia, Italy

<p>Abstract</p> <p>Background</p> <p>Human papillomavirus (HPV) has been associated with several disorders of the genital tract, skin and oropharynx. The aims of our study were to evaluate the prevalence of HPV infection in women between 15 and 54 years of age in North Sardinia, Italy, to identify the prevalence of High Risk - Human papillomaviruses (HR-HPV) genotypes and to establish a correlation between molecular and cytological results.</p> <p>Methods</p> <p>From 2007 to 2009 we consecutively enrolled women aged 15-54 years admitted to public and private outpatient settings. All the participants filled in a questionnaire about the socio-cultural state, sexual activity and awareness about HPV. 323 cervical specimens were tested for HPV-DNA and HPV genotypes with INNO-LiPA HPV Genotyping CE Amp kit. Samples showing positivity to some HPV genotypes were re-tested using "in house" quantitative Real-Time PCR assays.</p> <p>Results</p> <p>Overall HPV-DNA positivity was detected in 35.9% of the women. The prevalence of HR-HPV infection among HPV positive samples was 93.1% with a specific prevalence of HPV 16, 51, 31, 53 and 18 of 54.3%, 37.9%, 10.3%, 6.9% and 5.2%, respectively. Co-infection with any HPV, HR-HPV, LR-HPV and HR/LR-HPV type was 18.3%, 14.9%, 0.9% and 2.5%, respectively; HPV 16/51 co-infection was detected in 64.6% of the HR-HPV co-infection group. The most frequent HPV-genotypes detected were 16 (32.5%) and 51 (22.7%). Among the 57 patients harboring mono-infection the most prevalent HPV genotypes were 16 (38.6%) and 31(10.5%). A multivariate analysis identified a statistical significant association between HPV infection and age and between HPV infection and previous sexual transmitted diseases. A statistically significant association between cytological cervical lesions and generic HPV exposure was identified.</p> <p>Conclusions</p> <p>To our knowledge, this is the first survey evaluating the prevalence of HPV infection in Northern Sardinia and drawing attention to the unusual high proportion of genotype HPV 51. Given the recent implementation of a widespread immunization program with vaccines not containing HPV 51, it has been relevant to prove the high prevalence of this HPV genotype from the start of the vaccination campaign, in order to avoid in the future attributing to the vaccination program a possible selection effect (HPV replacement).</p

Burden of disease of human papillomavirus (HPV) : hospitalizations in the Marche and Veneto regions. An observational study

Background and Objectives HPV (human papillomavirus) is the virus most often responsible for sexually transmitted infections. The burden of HPV-related diseases on hospital resources represents a major public health problem. The aim of this study was to assess the economic burden of HPV-related diseases (anal cancer, genital cancer, genital warts, oropharyngeal cancer) on hospital resources in two Italian regions.Methods A retrospective, non-randomized, observational study was developed in the Marche and Veneto Regions, based on patients receiving hospitalization between 2008 and 2011. All hospitalizations were identified through administrative archives, according to the International Classification of Diseases (ICD-9 CM) to which a defined tariff was assigned.Results We identified 5299 hospitalized patients in Veneto and 1735 in the Marche Region. The mean annual hospitalization rate was 49.44 per 100,000 individuals in Veneto and 48.41 in Marche. The total mean annual cost attributable to HPV-related diseases was (sic)5.78 (SD 0.80) million in Veneto and (sic)2.24 (SD 0.17) million in Marche. Costs associated with genital cancer amounted to (sic)1.61 million in Veneto and (sic)1.06 million in Marche (28% and 47% of the total mean annual cost, respectively). Oropharyngeal cancer accounted for 36% in Veneto ((sic)2.08 million) and 28% in Marche ((sic)632,645). Hospitalization costs related to anal cancer were (sic)882,567 in Veneto and (sic) 377,719 in Marche; genital warts accounted for (sic)1.19 million in Veneto and (sic)171,406 in Marche. Finally, the mean cost per patient was (sic)4364 in Veneto and (sic)5176 in Marche.Conclusions The present work estimated the cost of HPV-related diseases for hospitalized patients in two Italian regions. The considerable estimated annual economic burden is a powerful driver for the governance of the public health sector

Adolescent WIN 55,212-2 pre-exposure affects rat behavioral and neurochemical response to cocaine

THESIS ABSTRACT Introduction and objectives: Recently, the effects of cannabis use on the brain received increasing attention in relationship with the implications for public health (Hall and Linskey, 2016). Noteworthy, cannabis consumption is also associated with later use of cocaine. The epidemiological studies describing such progressive pattern of different substance use, refers to the Gateway Hypothesis (Kandel, 1975). In this context, since the endocannabinoid system plays a central role in the development and in the reward circuits of the adolescent brain (Diaz Alonso et al., 2012), it is relevant to understand if and how early exposure to cannabinoids could cause neurobiological changes that increase the risk of vulnerability to abuse other drugs. For this purpose, we investigated the prospective gateway effect of WIN55,212-2 (WIN), a synthetic cannabinoid and full agonist of the CB1 receptors, evaluating drug’s cross-sensitizing behavioral and neurobiological effects to cocaine in both adolescence and adulthood. Results: Adolescent and adult male rats received administration of increasing doses of WIN, or its vehicle, twice-daily for 11 consecutive days. After 7 days of abstinence, rats were treated with cocaine, and tested with voltammetry in the nucleus accumbens (NAcc), or with locomotor activity 24 hours after the last day of abstinence. Adolescent, but not adult WIN-pre-treated rats later exposed to cocaine, showed an increase in the amplitude of dopamine release in the NAcc, and in the motor-activating effects of cocaine compared to vehicle-pre-treated animals. Furthermore, using a multi-omics approach, we found that the cocaine-induced behavioral cross-sensitization of WIN- pre-treated rats correlates with a variety of molecular and epigenetic modifications at the level of the pre-frontal cortex. Moreover, since substance use disorders are triggered by repeated exposures that involve drastic epigenetic and synaptic alterations, we also evaluated the long-term persistence of motor cross- sensitization and the possible positive reinforcement after repetitive cocaine administrations. We found a close-to-significant persistence of motor cross-sensitization between WIN and cocaine and a conditioned place preference for cocaine in adolescent WIN pre-treated animals. Conclusions: The findings of the present thesis aim to provide a contribution to the literature to better understand the effects of cannabis use on the brain, and to provide a significant piece of knowledge for decision makers to address more effectively the subtle issue of cannabis legalization

Numerical validation of linear accelerometer systems for the measurement of head kinematics

The purpose of this study was to analytically exploit the capabilities of head-mounted systems instrumented with linear accelerometers (ACs) for field use in redundant configurations. We simulated different headsets equipped with uni-, bi- or triaxial sensors with a number of axes that lie in the range of 12–24; the ACs were located on a hemispherical surface by adopting a priori criterion while their orientation was randomized. In addition, for a comparative purpose the nine accelerometer scheme (one triaxial AC and three biaxial ACs addressed in the following as “3-2-2-2 configuration”) was also analyzed in the present paper. We simulated and statistically assessed the performances of hemispherical headsets in the test case of a healthy subject walking freely at normal pace over level ground. The numerical results indicated that a well designed instrumented headset can retrieve the angular acceleration and a0−g component with rms errors of about 2% and 0.5%, respectively, and angular velocity with a drift error of about 20% in a 6 s trial. On the contrary, the pose of the headset cannot be evaluated because of the drift induced by the integration process. In general, we can state that headsets with uni-, bi- or triaxial ACs have comparable performances. The main implications of the above-mentioned observations are (a) neither expensive triaxial ACs nor assembling procedure based on the use of orthogonal mounting blocks are needed; (b) redundant arrays of low-cost uni- or biaxial ACs can effectively be used to reach adequate performances in biomechanical studies where head acceleration and velocity are investigated; (c) while estimates of angular acceleration with accelerometers are accurate, estimations of angular velocities, linear velocities and pose are not