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Force feedback is often beneficial for robotic teleoperation, as it enhances the user’s remote perception. Over the years, many kinesthetic haptic displays (KHDs) have been proposed for this purpose, which have different types of interaction and feedback, depending on their kinematics and their interface with the operator, including, for example, grounded and wearable devices acting either at the joint or operational space (OS) level. Most KHDs in the literature are for the upper limb, with a majority acting at the shoulder/elbow level, and others focusing on hand movements. A minority exists which addresses wrist motions. In this paper, we present the Wearable Delta (W$ \Delta $), a proof-of-concept wearable wrist interface with hybrid parallel–serial kinematics acting in the OS, able to render a desired force directly to the hand involving just the forearm–hand subsystem. It has six degrees of freedom (DoFs), three of which are actuated, and is designed to reduce the obstruction of the range of the user’s wrist. Integrated with positions/inertial sensors at the elbow and upper arm, the W$ \Delta $ allows the remote control of a full articulated robotic arm. The paper covers the whole designing process, from the concept to the validation, as well as a multisubject experimental campaign that investigates its usability. Finally, it presents a section that, starting from the experimental results, aims to discuss and summarize the W$ \Delta $ advantages and limitations and look for possible future improvements and research directions.
The purpose of this study is to contribute to the knowledge of the clinical characteristics of the bipolar spectrum by examining factors associated to course of symptoms in BP patients. We evaluated differences between acutely depressed versus subthreshold mixed patients.
90 depressed patients (Group 1, HDRS: 18.2±4.6, YMRS: 1.4±2.9) and 41 patients presenting a mixed subthreshold symptomathology (Group 2, HDRS: 9.1±3.2, YMRS: 9.6±6.4) were included in the study. All patients underwent structured diagnostic interviews for axis I and axis II disorders (SCID-I, SCID-II) and have been submitted to psychometric assessment with Hamilton Depression Rating Scale (HDRS), Hamilton Anxiety Rating Scale (HARS), Young Mania Rating Scale (YMRS), Global Assessment Scale (GAS), Social Adjustment Self-reported Scale (SASS), Quality of Life Scale (QoL), at baseline and repeated follow-up (1, 3, 6, 12 months). Personality dimensions were evaluated by Temperament and Character Inventory (TCI-R).
The most important result is the slight increase in depressive symptoms in subthreshold mixed patients after 3 months of treatment. These patients were more likely diagnosed as BP-I, were non-SUD patients and/or non-comorbid for axis II personality disorders and had a shorter duration of current episode prior intake. Measures of social and functional adjustment were not different in the two groups, though a slight trend for depressed patients to report a poorer quality of life. No difference in personality traits were observed among the two samples.
Our study confirms the importance of considering subthreshold symptoms in the evaluation and treatment of patients with Bipolar Disorder.
Behavioural addictions (BAs) can be understood as disorders characterized by repetitive occurrence of impulsive and uncontrolled behaviours. Very few studies have investigated their association with mood disorders. The present study was undertaken to determine the prevalence of the main behavioural addictions in a sample of bipolar outpatients in euthymic phase or stabilised by medications and to investigate the role of impulsivity and temperamental and character dimensions.
One-hundred-fifty-eight Bipolar Disorder (BD) (DSM-IV) outpatients were assessed with tests designed to screen the main behavioural addictions: pathological gambling (SOGS), compulsive shopping (CBS), sexual (SAST), internet (IAD), work (WART) and physical exercise (EAI) addictions. TCI-R and BIS-11 were administered to investigate impulsivity and personality dimensions mainly associated with BAs. The clinical sample has been compared with 200 matched healthy control subjects.
In bipolar patients, 33% presented at least one BA respect to the 13% of controls. Significantly higher scores at the scales for pathological gambling (p< .001), compulsive buying (p< .05), sexual (p< .001) and work addictions (p< .05) have been found. Self-Directness (p=.007) and Cooperativeness (p=.014) scores were significantly lower while impulsivity level was significantly higher (p=.007) in bipolar patients with BA than those without BA.
To our knowledge, this is the first study investigating the prevalence of behavioural addictions in BD showing a significant association of these disorders. BAs are more frequent in bipolar patients than in healthy controls and are related to higher impulsivity levels and character immaturity.
The aim of the present study was to thoroughly investigate the existing comorbidity between Axis II and Bipolar Disorder (BD) pointing out as well the meaningful existing comorbidity between Personality Disorders and Cyclothymia.
Materials and methods
A study group composed of 70 patients affected by Bipolar Disorder (Type I, Type II, and Cyclothymia) was enrolled at the Bipolar Disorders Unit of the Catholic University of the Sacred Heart of Rome. Axis I diagnosis was made by SCID-I; Axis II diagnosis was made by SCID-II.
In a sample of 70 patients in euthymic phase, 39 patients (55.7%) showed comorbidity with Axis II Disorders. Clusters were represented as follows: 2 patients (5.1%) fell within cluster A; 24 patients (61.5%) within cluster B; 9 patients (23%) within cluster C; and 4 patients (10.4%) turned out to be affected by NAS Personality Disorders. On the whole 39 patients - 24 patients (61.5%) affected by BD I, 6 patients (15.3%) affected by BD II, and 9 patients (23.0%) affected by Cyclothymia were found to have comorbidity with Axis II Disorders. Besides, in our sample there was a significant comorbidity between Cyclothymia and Personality Disorders.
More than half of patients (55.7%) showed comorbidity with Axis II Disorders. Moreover most of patients turned out to be affected by Personality Disorders falling within cluster B while 23% of Cyclothymic patients were found to have comorbidity with Axis II Disorders.
Dans les cas des troubles bipolaires, les taux de comorbidité avec un TDAH peut varier entre 9,5 % et 27 % . Ces patients présentent un début de trouble plus précoce, avec plus d’épisodes dépressifs et des épisodes mixtes. Il existe peu d’étude sur le lien entre ces deux pathologies et les différentes dimensions de personnalité selon le modèle de Big Five.
Notre étude comporte 106 patients souffrant de dépression, 102 patients bipolaires et 120 témoins, tous homogènes vis-à-vis de leurs caractéristiques démographiques. Le diagnostic de TDAH se basait sur les critères DSM-IV-TR. Les traits de TDAH étaient autoévalués avec la Wender Utah Rating Scale (WURS), la Adult ADHD Self-rating Scale (ASRS) et la Brown Attention Déficit Disorder Scale (ADD). L’Inventaire de Personnalité-Révisé, le NEO PI-R, servait également à évaluer les dimensions de la personnalité au sein des groupes cliniques.
15,7 % des adultes souffrant d’un trouble bipolaire et 7,5 % souffrant d’une dépression sévère manifestaient une comorbidité d’un TDAH en comparaison avec seulement 3,3 % des témoins. Il existe des corrélations significatives entre des traits de personnalité et la présence d’un TDAH. Une analyse de régression logistique de l’ensemble des 208 sujets cliniques a montré que ceux avec des faibles niveaux de névrosisme manifestaient un taux moins important de comorbidité avec un TDAH.
Notre étude souligne le lien entre des troubles de l’humeur, notamment les troubles bipolaires, et la présence d’un TDAH chez des adultes. Nos résultats soutiennent la nécessité d’évaluer les sujets souffrant des troubles d’humeur sur une éventuelle comorbidité de TDAH en milieu clinique. Il faudra étudier d’une façon plus approfondie ces traits de personnalité et les liens entre des troubles de l’humeur et un TDAH afin de pouvoir adapter la prise en charge.
Adolescence seems to be a critical period of addiction vulnerability, based on both neurobiological, social, and familiar factors. The earlier onset of behavioural/substance dependence seems to predict greater addiction severity, morbidity, and multiple addictive disorders. The aim of this study was to assess the presence of multiple addictions in an Italian adolescent high-school population.
Data were collected from a sample of 2907 high school students recruited in the area of Barletta (Puglia) and Latina (Lazio). The sample had an average age of 16.69+/-1.89 years. Through different multi-item scales we evaluated different behavioural addictions: Pathological Gambling, Internet Addiction, Compulsive Buying, Sexual Addiction, Relationship Addiction, Mobile Phone Addiction, Exercise Addiction, Work Addiction.
the presence of pathological gambling was found in 4.4%, compulsive buying in 8.3%, internet addiction in 1.1%, work addiction in 7.2%, exercise addiction in 6.7% of the subjects. Males showed higher scores (p<.001) for pathological gambling, internet and exercise addiction, whereas females showed an higher score (p<.001) for mobile phone addiction. A positive correlation (p<.001) was found between all the scale employed, apart from the Compulsive Buying Scale, which was negatively correlated (p<.001) with the other scales.
The high number of subjects reporting a behavioural dependence is an unexpected data, which creates concern, and need an adequate analysis. It should be valued if these typologies of “addiction without the substance” are a temporary phenomenon occurring in adolescents or if they are a stable trait, and a consequent risk factor for a substance misuse.
Our study represents a pilot evaluation about how the MOOD-SR recognizes subthreshold manifestations that may be associated with clinical symptomatology in a group of bipolar patients.
At Day Hospital of Psychiatry, Policlinico “A. Gemelli”, Bipolar Disorders Unit, it has been conducted an experimental study on a heterogeneous sample of 24 patients with a diagnosis of Bipolar Disorder type I. Patients have been assessed with the MOOD-SR, a clinical self-reported interview, that is specific for the spectrum of subthreshold pathology, and with the Quality of Life (QoL), that investigates the patient's quality of life.
We have found that 16 patients on 24 report a score higher than 60 (68,4%). Among these, 10 female patients on 15 have a total score higer than 61 (68.75%) while 6 male patients on 9 obtain a total score higher than 60 (62,5%). However, these results have only preliminary value, further studies are needed in order to obtain a deeper evaluation.
Spectrum manifestations are both indicator of course and response to treatment and predictive for relapse. This finding may represent an important preventive instrument for maniacal relapse in patients with Bipolar Disorder, that is often underdiagnosed or confused for Unipolar Depression. By adequately recognizing the problem we will be able to refine diagnosis and individualize therapy.
A significant comorbidity between attention-deficit/hyperactivity disorder (ADHD) and affective disorders has been consistently reported in adults. Less data regarding the role of personality traits, and the influence of ADHD co-occurrence on clinical characteristics and outcome of mood disorders are currently available.
The sample consisted of 296 subjects, divided into three homogeneous groups according to demographic characteristics: 106 subjects diagnosed with major depressive disorder, 92 with bipolar disorders and 98 healthy controls. ADHD diagnosis was based on DSM-IV-TR criteria. Childhood and adult ADHD features were measured with the Wender Utah Rating Scale (WURS), the Adult ADHD Self-rating Scale (ASRS) and the Brown Attention Deficit Disorder Scale (ADD). The Hospital Anxiety and Depression Scale (HAD) and the Revised NEO Personality Inventory (NEO-PI-R) were also administered to the clinical groups, in order to investigate depressive/anxious symptoms and personality dimensions.
The prevalence of adult ADHD in subjects with bipolar disorders or major depressive disorder was 22.0% and 8.5% respectively (p < .001), compared to 3.1% in healthy controls. Significant associations between personality traits, depressive/anxious symptoms and ADHD features were found.
The present study emphasises the close relationship between affective disorders, especially bipolar disorders, and ADHD in adults. Our findings support the need to assess subjects with mood disorders in the clinical setting for possible co-existing ADHD and to further investigate personality traits to better understand the etiology of affective disorders and ADHD co-occurrence.
Illicit drug use is well known as an important contributor to the global burden of diseases, but the physical and psychopathological risks of recreational drugs misuse are often underestimated and drug-related fatalities in specific settings are under-investigated.
Objectives and methods
In the framework of the EU-funded project “EU-Madness”, we collected and analysed all the reports of drug-related fatalities in Ibiza from January 2010 to September 2016, with the aim of characterising the sample, and identifying the involved substances and the nature of deaths associated with their consumption.
Overall, 58 drug-related fatalities were registered from 2010 to September 2016 (87.9% males, 12.1% females, mean age 33.16; females were significantly younger than males). Most of the deceased were Britons (36.2%), followed by Spanish (22.4%), Italians (6.9%) and Germans (5.2%). In half the cases, the substance identified in post-mortem analyses was a stimulant; in 24.1% of the sample it was a depressor a prescription drug or more than two substances in 22.4%. Most of the fatalities were due to cardiovascular accidents (62%); 22.4% were deaths by drowning, 12% by fall from heights and 3.4% were due to mechanical asphyxia.
According to the results from our sample, stimulants (mainly MDMA and cocaine) are the substances of abuse involved in most drug-caused fatalities. The number of fatalities per year has been steadily increasing, but the growing diffusion of novel psychoactive substances (NPS) does not seem to be a direct cause (although better methods of their analysis in post-mortem samples should be designed).
Disclosure of interest
The authors have not supplied their declaration of competing interest.
Although the diagnosis of bipolar disorder is currently based on clinical criteria, preliminary studies showed that palmitic and arachidonic acid levels are able to discriminate adult patients with major depressive disorder (MDD) from those with bipolar disorder (BD).
To replicate and to expand previous findings by investigating the relation between mood disorders and platelet and plasmatic fatty levels.
To compare the lipidic profile of individuals with different mood disorder (MDD vs. BD) and to investigate the relation with specific clinical features (duration of illness, attempted suicide, psychotic symptoms).
Potential participants were recruited from the outpatient and inpatient psychiatric units of the university hospital of Palermo (Italy). Diagnosis of DSM IV mood disorders was made using the MINI. Symptom severity was assessed using the HAM-D rating scale and the YMRS. Fatty acid profile was analyzed using mass spectrometry.
Preliminary analyses were performed on 8 patients with MDD and 6 with BD. Groups were similar in terms of demographic variables. Patients with MDD showed highest levels of platelet palmitic acid, stearic acid, and arachidonic acid. Furthermore, plasmatic docosahexaenoic acid was negatively related with manic symptoms severity (Rho = –0.697; P = 0.025) and platelet alpha linolenic acid was positively related with illness duration (Rho = 0.845; P = 0.040).
These preliminary findings suggest that platelet fatty acids may be possible biological markers to improve the diagnosis of BD.
Disclosure of interest
The authors have not supplied their declaration of competing interest.
Hydatigera (Cestoda: Taeniidae) is a recently resurrected genus including species seldom investigated in sub-Saharan Africa. We surveyed wild small mammal populations in the areas of Richard Toll and Lake Guiers, Senegal, with the objective to evaluate their potential role as intermediate hosts of larval taeniid stages (i.e. metacestodes). Based on genetic sequences of a segment of the mitochondrial DNA gene cytochrome c oxidase subunit 1 (COI), we identified Hydatigera parva metacestodes in 19 out of 172 (11.0%) Hubert's multimammate mice (Mastomys huberti) and one out of six (16.7%) gerbils (Taterillus sp.) and Hydatigera taeniaeformis sensu stricto metacestodes in one out of 215 (0.5%) Nile rats (Arvicanthis niloticus). This study reports epidemiological and molecular information on H. parva and H. taeniaeformis in West African rodents, further supporting the phylogeographic hypothesis on the African origin of H. parva. Our findings may indicate significant trophic interactions contributing to the local transmission of Hydatigera spp. and other parasites with similar life-cycle mechanisms. We therefore propose that further field investigations of rodent population dynamics and rodent-borne infectious organisms are necessary to improve our understanding of host–parasite associations driving the transmission risks of rodent parasites in West Africa.
This study examines the interplay between individual and social–developmental factors in the development of positive functioning, substance use problems, and mental health problems. This interplay is nested within positive and negative developmental cascades that span childhood, adolescence, the transition to adulthood, and adulthood. Data are drawn from the Seattle Social Development Project, a gender-balanced, ethnically diverse community sample of 808 participants interviewed 12 times from ages 10 to 33. Path modeling showed short- and long-term cascading effects of positive social environments, family history of depression, and substance-using social environments throughout development. Positive family social environments set a template for future partner social environment interaction and had positive influences on proximal individual functioning, both in the next developmental period and long term. Family history of depression adversely affected mental health functioning throughout adulthood. Family substance use began a cascade of substance-specific social environments across development, which was the pathway through which increasing severity of substance use problems flowed. The model also indicated that adolescent, but not adult, individual functioning influenced selection into positive social environments, and significant cross-domain effects were found in which substance-using social environments affected subsequent mental health.
Studies have demonstrated that the effects of two well-known predictors of adolescent substance use, family monitoring and antisocial peers, are not static but change over the course of adolescence. Moreover, these effects may differ for different groups of youth. The current study uses time-varying effect modeling to examine the changes in the association between family monitoring and antisocial peers and marijuana use from ages 11 to 19, and to compare these associations by gender and levels of behavioral disinhibition. Data are drawn from the Raising Healthy Children study, a longitudinal panel of 1,040 youth. The strength of association between family monitoring and antisocial peers and marijuana use was mostly steady over adolescence, and was greater for girls than for boys. Differences in the strength of the association were also evident by levels of behavioral disinhibition: youth with lower levels of disinhibition were more susceptible to the influence of parents and peers. Stronger influence of family monitoring on girls and less disinhibited youth was most evident in middle adolescence, whereas the stronger effect of antisocial peers was significant during middle and late adolescence. Implications for the timing and targeting of marijuana preventive interventions are discussed.
It has been postulated that Helicobacter pylori infection could affect growth and appetite, consequently influencing body weight. Therefore, the association between H. pylori infection and the dietary and anthropometric indicators of nutritional status of a paediatric population were investigated. A total of 525 children (aged 4–16 years) who were referred to the gastroenterology unit of the Sor Maria Ludovica Children's Hospital from Buenos Aires, Argentina, were enrolled and completed an epidemiological questionnaire. H. pylori infection was diagnosed using the 13C-urea breath test (13C-UBT). Height and weight were assessed for calculation of anthropometric indicators. Energy and macronutrient intakes were estimated by 24 h dietary recall. Data analysis was performed using a χ2 test, a Student's t test, a Mann–Whitney U test and linear and logistic regressions. The prevalence of H. pylori infection was 25·1 % (with a mean age of 10·1 (sd 3·1) years). A tendency towards lower energy, carbohydrate, protein and fat intakes was observed in infected patients; however, it was not associated with H. pylori infection in any of the evaluated age groups (4–8, 9–13 and 14–16 years). Underweight, stunting, overweight and obesity were also not associated with the infection. Although height-for-age and BMI-for-age Z scores tended to be lower in infected patients, the differences between H. pylori-positive and H. pylori-negative children were not statistically significant. In conclusion, H. pylori infection was not associated with dietary intake or with anthropometric indicators in the present population of children with gastrointestinal symptoms; however, an increased sample size would be needed to confirm the observed tendency towards lower dietary intake and lower anthropometric indicators of nutritional status in H. pylori-infected children.
PUFA from fish oil appear to have anti-inflammatory and anti-oxidative effects and improve nutritional status in cancer patients. With this as background, the aim of the present study was to investigate the effect of EPA plus DHA on inflammatory condition, and oxidative and nutritional status in patients with lung cancer. In our multicentre, randomised, double-blind trial, thirty-three patients with a diagnosis of advanced inoperable non-small-cell lung cancer and undergoing chemotherapy were divided into two groups, receiving four capsules/d containing 510 mg of EPA and 340 mg of DHA, or 850 mg of placebo, for 66 d. At the start of chemotherapy (T0), after 8 d (T1), 22 d (T2) and 66 d (T3), biochemical (inflammatory and oxidative status parameters) and anthropometric parameters were measured in both groups. A significant increase of body weight in the n-3 group at T3v. T0 was observed. Concerning inflammation, C-reactive protein and IL-6 levels differed significantly between the n-3 and placebo groups at T3, and progressively decreased during chemotherapy in the n-3 group, evidencing n-3 PUFA anti-inflammatory action. Concerning oxidative status, plasma reactive oxygen species levels increased in the placebo group v. the n-3 group at the later treatment times. Hydroxynonenal levels increased in the placebo group during the study, while they stabilised in the n-3 group. Our data confirm that the continual assumption of EPA plus DHA determined an anti-inflammatory and anti-oxidative action which could be considered a preliminary goal in anti-cachectic therapy.
We consider two systems of real analytic partial differential equations, related by a holomorphic contact map H. We study how the generalised symmetries of the first equation are mapped into those of the second one, and determine under which conditions on H such a map is invertible. As an application of these results, an example of physical interest is discussed.
Background and objective: Reducing postoperative mechanical ventilation in patients undergoing liver transplantation may have clinical and organizational advantages. On the basis of our experience, we here evaluate the possibility of practising immediate tracheal extubation in the operating theatre. Methods: In this prospective study, patients consecutively undergoing liver transplantation between 1 June 1999 and 31 May 2004 were extubated in the operating theatre at the end of surgery on the basis of standardized and universally accepted criteria, under conditions of haemodynamic and metabolic stability. Results: Two hundred and seven of the 354 patients (58.5%) were extubated immediately after the completion of the surgical procedure (mean time between end of surgery and extubation: 0.4 ± 1.4 min); two were re-intubated. In the last of the 5 yr of the study, the percentage of immediate extubations increased to 82.5%. During the study period, there was a progressive increase in the number of immediate extubations per individual member of the team of anaesthetists. The pre-transplant Child-Pugh severity of the underlying liver disease did not predict rapid extubation, but the Model for End-stage Liver Disease score of <11 did (receiver operator characteristic area under the curve = 0.61; P < 0.05). Conclusions: Immediate extubation after liver transplantation is possible in a substantial percentage of cases; confidence, habit and a spirit of emulation are decisive factors in encouraging anaesthetists to extend this practice to the largest possible number of patients. A successful immediate extubation may be an important indicator of perioperative quality of care in liver transplantation.
CASPER (Concordia Atmospheric SPectroscopy of Emitted Radiation)
is a spectrometer proposed for installation at Dome C, devoted to
measurements of atmospheric emission in the spectral region
between 180 μm and 3 mm (3–55 cm-1). This
instrument will be able to perform continuous spectral sampling at
different altitudes at angular scales of ~1°. From the
recorded data it is possible to extract atmospheric transmittance
within 1% in the whole wide operating band, together with water
vapour content and O2 and O3 concentrations. CASPER will
allow us to characterize the site for future FIR/mm telescopes.
Atmospheric data recorded by CASPER will allow for correction of
astrophysical and cosmological observations without the need for
telescope-specific procedures and further loss of observation time
with more precision in the observations themselves. Calibration of
ground-based telescopes on known sky sources is strongly affected
by atmospheric absorption. CASPER has this as its primary goal.
The spectrometer is based on a Martin-Puplett interferometer. Two
data sampling solutions will be performed: phase modulation &
fast scan strategy. Sky radiation is collected towards the
interferometer by an optical setup that allows the field of view,
to explore the full 0° ÷ 90° range of elevation angles. With
a low spurious polarization instrument, monitoring of polarized
atmospheric contribution will be possible.
The analysis of the mixing processes involving water masses on the Ross Sea continental shelf is
one of the goals of the CLIMA project (Climatic Long-term Interactions for the Mass balance in Antarctica).
This paper uses extended Optimum MultiParameter analysis (OMP), which is applied to four datasets
collected during the cruises of 1994/95, 1995/96, 1997/98 and 2000/01 in the Ross Sea (Antarctica). Data
include both hydrological, (temperature, salinity, and pressure; T, S, and P, respectively) and chemical
parameters (O2, Si(OH)4, PO4, and NO3+NO2). The OMP analysis is based on the assumption that the mixing
is a linear process which affects all parameters equally so that each sample shows physical/chemical
properties that are the result of the mixing of some properly selected Source Water Types (SWTs). OMP thus
evaluates the best set of contributions by all SWTs to each sample, and allows the spatial distribution and
structure of the water masses in a basin to be evaluated. Ocean circulation may subsequently be inferred by
means of a deeper analysis of the spreading of the water mass. In this study, the “real” Redfield ratios
observed in the Ross Sea were used to correct the equations referring to the chemical parameters in
accordance with the extended version of OMP. The solutions include some physically realistic constraints.
The results allow a detailed description of the water mass distribution, validated through comparison with
some “canonical” thermohaline characteristics of the Ross Sea hydrology. In particular our results verify the
spreading of the HSSW over the entire continental shelf and emphasize the key role it plays in the ventilation
of the deep waters outside the Ross Sea. In addition a description is given of the intrusion of relatively warm
waters coming from the open ocean and flowing at some specific locations at the continental shelf break.