Effect of Interfacial SiOx Defects on the Functional Properties of Si-Transition Metal Oxide Photoanodes for Water Splitting

The transfer of photogenerated charges through interfaces in heterojunction photoanodes is a key process that controls the efficiency of solar water splitting. Considering Co3O4/SiOx/Si photoanodes prepared by physical vapor deposition as a representative case study, it is shown that defects normally present in the native SiOx layer dramatically affect the onset of the photocurrent. Electron paramagnetic resonance indicates that the signal of defects located in dangling bonds of trivalent Si atoms at the Si/SiOx interface vanishes upon vacuum annealing at 850 °C. Correspondingly, the photovoltage of the photoanode increases to ≈500 mV. Similar results are obtained for NiO/SiOx/Si photoanodes. Photoelectrochemical analysis and impedance spectroscopy (in solution and in the solid state) indicate how the defect annealing modifies the Co3O4/SiOx/Si junction. This work shows that defect annealing at the solid-solid interface in composite photoanodes strongly improves the efficiency of charge transfer through interfaces, which is the basis for effective solar-to-chemical energy conversion.

Management of vaccine-related issues during a pandemic emergency: activation of a referral center

Issue

Vaccine hesitancy (VH) and the challenges faced by healthcare workers (HWs) in evaluating the complex risk-benefit ratio of vaccines’ threaten the effectiveness of vaccination policy. The threat is enhanced when new vaccines are adopted during a pandemic emergency. In Italy, the Emilia-Romagna Region (ERR) created a specialized referral board called Vax-Consilium (VC) to support and guide HWs.

Description of the problem

During a pandemic emergency, rapid and appropriate vaccine implementation is necessary to protect fragile individuals and to encourage vaccine adherence among exposed groups. Challenges in the realm of vaccination emerge, especially when dealing with patients with a complex medical history or previous vaccine adverse events. HWs were able to consult VC via a standardized digital form after obtaining the patient’s informed consent. After a multidisciplinary and evidence-based evaluation, VC provided a conclusive report on the individual vaccine risk-benefit analysis. No cost is charged to the patient.

Results

During the anti-COVID-19 vaccination campaign in 2021, 148 interrogations were submitted to VC: 121 were evaluated, whereas 27 were withdrawn by the HWs or rejected because of insufficient documentation. Mean patient age was 44 years. No absolute contraindication was found, whereas in 23 cases VC recommended immunization with a different vaccine. The disciplines most frequently involved were neurology, angiology and cardiology.

Lessons

VC implementation in EER proved highly effective. Indeed, during the pandemic, anti-COVID-19 vaccination coverage reached >90%. In addition, DTaP-polio-HBV-HIb and MMR vaccination coverage reached >95%. VC proved to be a high-quality public health service. Not only was citizens’ trust in the healthcare system enhanced and was VH reduced, but HWs knowledge improved even in cases not considered in national and international guidelines.

Key messages

• A specialized referral board (Vax-Consilium) could be an effective tool for enhancing citizens’ trust in vaccines.

• A specialized referral board (Vax-Consilium) contributes to lowering VH and supporting HWs decision-making process.

Impact of the COVID-19 Pandemic on General Hospital Physicians Work and Mental Health: An International Cross Sectional Study

COVID-19 pandemic had an important impact in mental health across all countries and populations. However, health care professionals, particularly those in the front line have been subjected to increased levels of stress, workload, deterioration of work environment and working conditions while potentially being afraid of contracting the infection themselves or infecting love ones due to the higher risk of contagion when dealing with infected patients. Some studies have stressed out this impact showing increased levels of burnout, depression, hopelessness, stress and post-traumatic stress in all physicians however, the impact of the pandemic may have been different depending on the specialty. We intended to study the impact of COVID-19 pandemic for doctors working at general hospitals and liaison psychiatrists dealing with COVID-19 patients in Europe. We developed and applied online questionnaires to physicians working at general hospitals and psychiatrists working at liaison services, in different European countries (Portugal, Italy, Belgium, Greece, Poland, Croatia), in order to determine what were their working conditions and it they reported mental health symptoms during the pandemic. This questionnaire included demographic data, questions about working conditions when dealing with general and COVID patients and the Hospital Anxiety and Depression scale (HADS). It was distributed thought email and social media platforms used by doctors. This work has been approved by each local Ethics committee and all participants signed an informed consent.

Disclosure

No significant relationships.

Clinical and Socio-demographic Variables Associated with the Outcome of Vocational Rehabilitation Programs: A Community-Based Italian Study

This study aims to identify clinical and socio-demographic variables associated with the outcome of vocational rehabilitation programs (VRPs). All users of an Italian Community Mental Health Centre (CMHC) included in VRPs delivered according to the model of Supported Employment in years 2011-2016 were retrospectively enrolled. Fifty users who ended the program with employment were compared with fifty users who dropped out, with respect to clinical and socio-demographic variables. VRPs lasting less than 6 months and oriented toward the competitive labor market had a higher probability of employment. Among users who successfully ended the VRP, the median of health interventions significantly decreased after employment. In the same group of users, less non-health interventions strictly linked to the VRP were required, when compared with users who dropped out. We conclude that employment is associated with improvement of users' clinical conditions and reduced workload for the CMHC.

Colorectal cancer screening: Assessment of CEACAM6, LGALS4, TSPAN8 and COL1A2 as blood markers in faecal immunochemical test negative subjects

Prevention is essential to reduce Colorectal Cancer (CRC) mortality. We previously reported a panel of four genes: CEACAM6, LGALS4, TSPAN8, COL1A2 (CELTiC) able to discriminate patients with CRC. Here, we assessed the CELTiC panel by quantitative polymerase chain reaction, in the blood of 174 healthy subjects, who resulted negative to the faecal immunochemical test (FITN). Using non-parametric statistic and multinomial logistic models, the FITN were compared to previously analysed subjects: 36 false positive FIT (NFIT), who were negative at colonoscopy, 36 patients with low risk lesions (LR) and 92 patients with high risk lesions or CRC (HR/CRC). FITN showed a significantly lower expression of the four genes when compared to HR/CRC. Moreover, FITN showed a significantly lower expression of TSPAN8 and COL1A2 compared to NFIT and LR patients.

The multinomial logistic model confirmed that TSPAN8 alone specifically discriminated FITN from NFIT, LR and HR/CRC, while LGALS4 was able to differentiate FITN from false positive FIT. Finally, ROC curves analysis of the comparisons between FITN and HR/CRC, LR or NFIT reported AUC greater than 0.87, with a sensitivity and specificity of 83% and 76%, respectively. The CELTiC panel was confirmed a useful tool to identify CRC patients and to discriminate false FIT positive subjects.

Polarization dependence of second harmonic generation from plasmonic nanoprism arrays

The second order nonlinear optical response of gold nanoprisms arrays is investigated by means of second harmonic generation (SHG) experiments and simulations. The polarization dependence of the nonlinear response exhibits a 6-fold symmetry, attributed to the local field enhancement through the excitation of the surface plasmon resonances in bow-tie nanoantennas forming the arrays. Experiments show that for polarization of the input light producing excitation of the plasmonic resonances in the bow-tie nanoantennas, the SHG signal is enhanced; this despite the fact that the linear absorption spectrum is not dependent on polarization. The results are confirmed by electrodynamic simulations which demonstrate that SHG is also determined by the local field distribution in the nanoarrays. Moreover, the maximum of SHG intensity is observed at slightly off-resonance excitation, as implemented in the experiments, showing a close relation between the polarization dependence and the structure of the material, additionally revealing the importance of the presence of non-normal electric field components as under focused beam and oblique illumination.

Real-time cellular impedance monitoring and imaging of biological barriers in a dual-flow membrane bioreactor

The generation of physiologically relevant in-vitro models of biological barriers can play a key role in understanding human diseases and in the development of more predictive methods for assessing toxicity and drug or nutrient absorption. Here, we present an advanced cell culture system able to mimic the dynamic environment of biological barriers while monitoring cell behaviour through real-time impedance measurements and imaging. It consists of a fluidic device with an apical and a basal flow compartment separated by a semi-permeable membrane. The main features of the device are the integration of sensing through transepithelial electrical impedance (TEEI) measurements and transparent windows for optical monitoring within a dual flow system. Caco-2 cells were cultured in the TEEI bioreactor under both flow and static conditions. Although no differences in the expression of peripheral actin and occludin were visible, the cells in dynamic conditions developed higher impedance values at low frequencies, indicative of a higher paracellular electrical impedance with respect to the static cultures. TEEI measurements at high frequency also enabled monitoring monolayer formation, which can be correlated with the observation of an RC behaviour in the impedance spectra. In particular, the cells subject to flow showed accelerated barrier formation and increased vitality with respect to the static controls, again highlighting the importance of dynamic conditions for epithelial cells.

Interplay between magnetic anisotropies in CoAu and Co films and antidot arrays: effects on the spin configuration and hysteretic behavior

We studied (i) a set of three Co : Au continuous films, grown by sputtering co-deposition (∼80 nm thick) with concentration ratios of 2 : 1, 1 : 1 and 1 : 0 (i.e., a pure Co film was also included), and (ii) a corresponding set of antidot arrays, produced by nanosphere lithography with the same hexagonal pattern (nominal lattice periodicity ∼520 nm). The samples were investigated by atomic and magnetic force microscopy and SQUID magnetometry. A twofold aim was fulfilled: to gain information on the magnetism of the CoAu compound (saturation magnetization, effective in-plane and out-of-plane anisotropy, exchange stiffness constant and magnetostrictive behavior) and to compare the magnetic behavior of the continuous and patterned samples. The continuous films exhibited a variety of hysteretic behaviours and magnetic configurations, ruled by the interplay between different magnetic anisotropy terms (magnetocrystalline, magnetoelastic and shape). The Co1Au1 film was anisotropic in the plane, whereas Co2Au1 and Co were isotropic and had an out-of-plane magnetization component; stripe domains were observed in Co2Au1, resulting in a transcritical hysteresis loop. A key role in determining these properties was ascribed to the magnetoelastic anisotropy term. Unlike the continuous films, the antidot arrays showed a similar hysteretic behavior and important similarities in the spin configuration were pointed out, despite the different compositions. We argue, also based on micromagnetic simulations, that this occurred because the nanopatterning enabled a local modification of the shape anisotropy, thus smoothing out the differences observed in the continuous films.

Systematic large-scale meta-analysis identifies a panel of two mRNAs as blood biomarkers for colorectal cancer detection

Colorectal cancer (CRC) is the third most common cancer in the world. A significant survival rate is achieved if it is detected at an early stage. A whole blood screening test, without any attempt to isolate blood fractions, could be an important tool to improve early detection of colorectal cancer. We searched for candidate markers with a novel approach based on the Transcriptome Mapper (TRAM), aimed at identifying specific RNAs with the highest differential expression ratio between colorectal cancer tissue and normal blood samples. This tool permits a large-scale systematic meta-analysis of all available data obtained by microarray experiments. The targeting of RNA took into consideration that tumour phenotypic variation is associated with changes in the mRNA levels of genes regulating or affecting this variation.

A real time quantitative reverse transcription polymerase chain reaction (qRT- PCR) was applied to the validation of candidate markers in the blood of 67 patients and 67 healthy controls. The expression of genes: TSPAN8, LGALS4, COL1A2 and CEACAM6 resulted as being statistically different.

In particular ROC curves attested for TSPAN8 an AUC of 0.751 with a sensitivity of 83.6% and a specificity of 58.2% at a cut off of 10.85, while the panel of the two best genes showed an AUC of 0.861 and a sensitivity of 92.5% with a specificity of 67.2%.

Our preliminary study on a total of 134 subjects showed promising results for a blood screening test to be validated in a larger cohort with the staging stratification and in patients with other gastrointestinal diseases.

Indicators of Complex Care During the Consultation-Liaison Psychiatry Activity at the Transplant Center of the Policlinico Hospital, Modena

OBJECTIVE

The objective of this study was to identify possible biopsychosocial predictors of organizational complexity in patients referred to the consultant psychiatrist for assessment before liver transplantation.

METHODS

This was a case-control study. All psychiatric consultations performed before and after liver transplantation from January 1, 2008 to December 31, 2013 were included. Complexity was operationalized as "undergoing two or more psychiatric consultations". Controls were defined as patients who were assessed only once by the consultant. Cases were represented by patients who underwent two or more consultations. Statistical analysis was performed with STATA 13.1, using logistic regressions.

RESULTS

In this study, 515 consultations were requested for 309 patients potentially eligible for liver transplantation. Controls were 209 (67.6%); cases were 100 (32.4%). Positive psychiatric history (odds ratio [OR] = 2.44; 95% confidence interval [CI], 1.43-4.16), viral or toxic (alcohol- or drug-related) liver disease (OR = 1.93; 95% CI, 1.09-3.42), use of psychotropic medications at the baseline (OR = 2.15; 95% CI, 1.14-4.07), and female gender (OR = 1.77; 95% CI, 1.01-3.11) were significantly associated with an increased probability of being cases.

CONCLUSIONS

Positive psychiatric history, viral or toxic liver disease, use of psychotropic medications at the index referral, and female gender are possible biopsychosocial predictors of complexity in patients eligible for liver transplantation.

Attempted suicide: Study of the phenomenon in a sample of patients in the province of Modena

Introduction

Attempted suicide consists in a self-damaging non-fatal behaviour, with an explicit or implicit evidence of the intent to die. It has a multifactorial aetiology: presence of psychiatric disorder, particularly major depression and other non-psychiatric components, like a series of stressful events.

Aim

To describe suicidal behavior among patients who attempted suicide.

Methods

Cross-sectional study. Patients admitted to three hospitals in the Province of Modena (Italy) after having attempted suicide were enrolled. Observation time: August 2015–August 2016 (13 months). Descriptive statistics made with STATA 13.0.

Results

A total of 187 subjects (female 65%) were enrolled in the period of time considered. Forty-one percent were aged 45–64; 43.7% had higher education; 50.4% were unemployed; 49.6% had regular income. Common means to attempt suicide were drugs (64%), weapons (11%), precipitation (10%), other (6%), choking (4%). Recent stressful events were reported by the 83.4% of respondents, namely: family conflicts (29%), economic problems (17%), personal health problems (11%), health problems affecting a family member (5%), emotional separation (9%), job loss (7%), other (22%), alcohol abuse (27%), substance abuse (4%). The main psychiatric diagnoses were: depressive disorder (56.67%), personality disorder (20%), psychotic disorder (6.67%), bipolar disorder (5.33%), behavioural disorders (2.67%), anxiety disorders (2%), dementia (1.33%).

Conclusions

Findings of the present study are consistent with available literature and could help to identify “high risk” groups to plan future targeted programmes.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

An Italian observational study on subclinical cardiovascular risk factors and depressive symptomatology. A suggestion for the potential utility of a sinergic cardio-psychiatric perspective

Introduction

Growing evidence has been collected over the complex, intertwined pathophysiological connection among subclinical cardiovascular (CV) disease, i.e. atherosclerosis, systemic low pro-inflammatory states and psychiatric disorders/symptomatology (anxiety, depression), with controversial results.

Aim

Aim of this study was to investigate the possible link between subclinical CV risk factors (atherosclerosis), depressive symptoms, and inflammation.

Methods

Cross-sectional study. Inclusion criteria: outpatients aged ≥40 years, attending colonoscopy after positive faecal occult blood test, negative medical history for cancer. Collected data: blood pressure, glycaemia, lipid profile, waist circumference, BMI, PCR (C reactive protein), LPS (bacterial lipopolysaccharide), ultrasound carotid intima-media thickness (c-IMT). Psychometric tests: HADS, TCI, IMSA, SF36. Statistical analysis performed with STATA13.

Results

The 54 patients enrolled were equally distributed by gender. CV risk factors were common in the study population, with 33 patients (61.11%) with hypertension, 14 (25.93%) with hyperglycaemia, 20 (37.4%) with hypertriglyceridemia, 19 (35.19%) with low HDL and 64.81% with overweight. High levels of PCR were found in 24 subjects (44.44%). Right c-IMT was increased in 26.41% of the sample, and 11.32% had an atheromatous plaque. Left c-IMT was increased in 24.53% of patients, with a plaque in 7.55% of them. Clinically relevant depressive symptoms were found in the 18.87% of the sample and were statistically significantly associated with PCR (OR = 28.63; P = 0.01).

Conclusions

Evidence contributing to the so-called “inflammation theory” of depression and supporting the association between mood and CV disorders was here collected, supporting the need for a multidisciplinary approach to the diagnosis and treatment of such conditions, assuming a clinically-translated PNEI (psycho-neuro-endocrino-immunological) perspective.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Association of blood pressure with anxiety and depression in a sample of primary care patients

Introduction

According to international scientific literature, and as summarized in the guidelines of the International Society of Hypertension, lowering of blood pressure can prevent cardiovascular accidents. Some studies suggest that hypertension, anxiety, and depression might be inversely correlated.

Objective

To investigate whether blood pressure is associated with anxiety and depression.

Methods

Cross-sectional design. Male and female primary care patients were enrolled, aged 40–80. Criteria of exclusion adopted: use of antidepressants or antipsychotics; previous major cardiovascular event; psychosis or major depression; Type 1-DM; pregnancy and hereditary disease associated to obesity. Anxiety and depression symptoms were assessed using HADS. Waist circumference, hip circumference, blood pressure, HDL, triglycerides, blood sugar, hypertension, albumin concentrations and serum iron were also assessed.

Results

Of the 210 subjects, 84 were men (40%), mean age was 60.88 (SD ± 10.88). Hypertension was found to correlate significantly to anxiety (OR = 0.38; 95% CI = 0.17–0.84), older age (OR = 3.96; 95% CI = 1.88–8.32), cigarette smoking (OR = 0.35; 95%CI = 0.13–0.94), high Body Mass Index (OR = 2.50; 95% CI = 1.24–5.01), Waist-hip ratio (OR = 0.09; 95% CI = 0.02–0.46) and the Index of comorbidity (OR = 16.93; 95% CI = 3.71–77.29).

Conclusions

An inverse association was found between anxiety and hypertension, suggesting the need to clinically manage these two dimensions in a coordinated way. Other findings are well known and already included in prevention campaigns. Further research is needed, also to better understand and explain the causative pathways of this correlation.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

The burden of attempted suicide: The attitude of emergency services workers

Introduction

The great global burden of suicide requires specific preventive strategies focused on emergency services (ES) workers, providing first aid after attempted suicide.

Objectives

To investigate the approach of ES workers toward attempted suicides, and to assess work-related stress and teamwork attitude as variables likely to influence suicide risk perception.

Methods

A total of 265 ES workers (73 medical doctors, 130 nurses, 62 health and social care workers) from 3 hospitals in the area of Modena (Northern Italy) were involved. In a group setting, titles from local newspapers reporting about suicides were read, and ES workers were asked to fill in 3 psychometric scale questionnaires (SUIATT, MBI and SAQ).

Results

The questionnaires returned were 88 (33%), 47% (n = 42) were filled by women, median age was 40 years. Doctors group had the highest response rate (60%). Burnout levels were intermediate at the Emotional Exhaustion subscale, severe at the Depersonalization subscale and mild at the Professional Efficacy subscale. Eighteen percent recorded a good team perception, 33% had a good perception of their work conditions. SUIATT subscales showed a restrictive attitude toward suicide, regardless of hospital and task.

Discussion

No associations emerged among SUIATT, MBI and SAQ subscales; male sex alone correlated to the SUIATT factor “rationality/mental alteration”, suggesting more “tolerance” of suicidal behaviour.

Conclusions

It is crucial to raise awareness among ES workers on this issue, since those workers considering suicide as “more acceptable” are more likely to recognise its signs.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Prevalence of metabolic syndrome and of symptoms of anxiety and depression in patients undergoing colonoscopy

Introduction

Metabolic syndrome (MetS) is defined by metabolic and cardio-vascular impairments and is frequently associated with anxiety and depressive disorders. Both MetS and anxiety-depressive syndromes feature similar systemic inflammatory alterations. Inflammation of the large bowel is also a key factor for the development of colorectal cancer (CRC).

Objective

To measure the prevalence of MetS and symptoms of anxiety and depression among patients undergoing colonoscopy.

Methods

Cross-sectional study. Patients undergoing colonoscopy aged 40 or more, with negative history for neoplasia or inflammatory bowel disease, were enrolled. Data collected: colonoscopy outcome, presence/absence of MetS (IDF and ATP III criteria), presence/absence of depressive and anxiety symptoms assessed with HADS.

Results

The sample was made up of 53 patients (female 24, 45.3%). Mean age was 60.66 ± 9.08. At least one adenoma was found to 23 patients (43.3%). Prevalence of MetS ranged from 34% to 36% (ATP III and IDF criteria, respectively). Prevalence of depressive and anxiety symptoms was 20% and 33%, respectively.

Conclusion

Prevalence of MetS, anxiety and depressive symptoms among patients undergoing colonoscopy was higher than in the general population.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Bridging the gap between clinical practice and research: The association for research in psychiatry

Clinical practice and research are frequently seen as two worlds apart, in psychiatry as in the vast majority of medical specialties. In order to bridge the gap between them, economic founds and grants are required, not always easy to obtain. In this contribution we report the birth of the Association for Research in Psychiatry (ARPSY) and its main activities. ARPSY was born in May 2016 thanks to a research prize assigned to dr. Giorgio Mattei by the eight Rotary Clubs of the Province of Modena, Italy (Rotary Club Modena, Mirandola, Carpi, Sassuolo, Vignola Castelfranco Bazzano, Frignano, Modena L.A. Muratori, Castelvetro di Modena Terra dei Rangoni, that altogether make up the so-called “Ghirlandina Group”). Aim of the association is to promote mental health among students and trainees, mental health professionals, patients and their families, and among the general population by means of fund raising, in order to finance research projects, clinical interventions and educational activities.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Impact of anxiety-depressive symptoms on outpatients’ quality of life: Preliminary results from an Italian observational study

Introduction

Several studies have shown an association between the Short-Form 36 (SF36) scores and anxiety-depressive symptoms, suggesting that depression in particular could reduce Quality of Life (QoL) to the same, and even greater, extent than chronic non-communicable diseases, such as diabetes and hypertension.

Aims

To explore the relationship among QoL and anxiety, depressive and anxiety-depressive symptoms in an outpatient sample.

Methods

Cross-sectional study. Inclusion criteria: outpatients aged ≥40 years, without history for cancer, attending colonoscopy after positive faecal occult blood test. Collected data: blood pressure, blood glucose, lipid profile. Psychometric test: Hospital Anxiety and Depression Scale (HADS). QoL was assessed with SF36. Statistics performed with STATA13.

Results

54 patients enrolled (27 females). Sixteen patients (30.2%) were positive for anxiety symptoms, ten (18.9%) for depressive symptoms and five (9.4%) for anxiety-depressive symptoms. The perceived QoL was precarious in twelve subjects (22.2%): eight (15.9%) had low score (≤ 42) at “Mental Component Summary” (MCS) subscale, three (5.7%) at the “Mental Health” item and one patient (1.9%) at the “Vitality” one. At the multiple regression analysis, depressive (OR = 28.63; P = 0.01) and anxiety-depressive symptoms (OR = 11.16; P = 0.02) were associated with MCS.

Conclusions

The association emerging from the present study between depressive/anxiety symptoms and the MCS component of SF36 is consistent with available literature. Study design and small sample size do not allow to generalize results, that need further studies to be confirmed.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Cardiovascular risk factors, anxiety symptoms and inflammation markers: Evidence of association from a cross-sectional study

Introduction

Anxiety disorders and Cardiovascular (CV) diseases, among the most common disorders in Western World, are often comorbid. A chronic systemic inflammatory state might be a shared underlining pathophysiological mechanism.

Aims

To investigate the association between anxiety symptoms, CV risks factors and inflammatory markers in an outpatient sample.

Methods

Cross-sectional study. Inclusion criteria: outpatients aged ≥40 years, attending colonoscopy after positive faecal occult blood test, negative medical history for cancer. Collected data: blood pressure, glycaemia, lipid profile, waist circumference, BMI, PCR (C Reactive Protein), LPS (bacterial Lipopolysaccharide). Psychometric tests: HADS, TCI, IMSA, SF36. Statistical analysis performed with STATA13.

Results

Fifty four patients enrolled (27 males, 27 females). Sixteen patients (30.19%) were positive for anxiety symptoms. Thirty-three patients (61.11%) had hypertension, 14 (25.93%) hyperglycaemia and 64.81% were overweight, with frank obesity (BMI≥ 30) in 11 subjects (20.37%). Anxiety symptoms were associated with low hematic HDL values (OR = 0.01; P = 0.01) and high concentration of triglycerides (OR = 0.023; P = 0.02) at the multiple regression model. At the univariate logistic analysis, anxiety was associated with LPS (OR = 1.06; P = 0.04).

Conclusions

Further evidence over the epidemiological link between common mental disorders and CV diseases was collected, with possible hints on pathophysiology and causative mechanisms related to inflammation. The importance of screening for anxiety and depression in medical populations is confirmed. Suggestions on future availability of screening tools based on inflammatory-related indicators should be the focus of future research.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

The magic list of everyday problems in consultation-liaison psychiatry (and hints for solving them)

Introduction

Consultation-liaison psychiatry (CLP) deals with clinical, research and training activities at the interface between psychiatry and the rest of medicine. The main clinical competencies of CLP include medical-psychiatric comorbidity (co-existing psychiatric and non-psychiatric disorders affecting reciprocally); medically unexplained physical symptoms, “somatization” and functional disorders; and liaison activities, addressed to medical workers and teams.

Objectives/aims

To describe and discuss typical clinical scenarios that CL psychiatrists have to work in, and suggest effective, evidence-based solutions.

Methods

Long-standing everyday clinical experience of the authors combined to evidence derived from international literature consented to create a list of the most common and complex problems or difficulties typical of the CLP clinical context, and related possible solutions.

Results

Most common/complex problems include the following: stigma and prejudice (of patients, relatives, colleagues, and own); excessive technicality of language; short/unpredictable duration of hospital stay of patients, and more in general pressure in clinical practice due to shortness of time and resources; tendency of colleagues from other disciplines to disregard setting features related to time and space (inadequate rooms, e.g. too busy or noisy); limited time for face-to-face discussion of cases or problems; conflicts with patients/relatives/colleagues, and fear of reciprocal manipulation.

Discussion

Moving on the interface between psychiatry and the somatic disciplines, CL specialists need to develop special skills, not only those strictly technical, but also those “soft skills” including relational abilities and flexibility. Understanding the systemic aspects of referrals in the relationship between physician, staff and patients is usually essential in the process of consultation.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Psychopharmacological treatments strategies in consultation-liaison psychiatry: Clinical vignette and pros and cons

Introduction

Multimorbidity and polipharmacotherapy are crucial features influencing the psychiatrist's prescription in the consultation-liaison psychiatry (CLP) setting.

Aims

to provide an example of computer-assisted decision-making in psychotropic prescriptions and to provide hints for developing pharmacological treatment strategies in the CLP setting.

Methods

Case report. A clinical vignette is presented, followed by a review of available online computer-assisted prescription software.

Results

A woman in her seventies was repeatedly referred for psychiatric consultation. Eleven different medications were administered daily, because of multimorbidity. A diagnosis of distymia was established, with comorbid mixed pain (partly fulfilling the criteria of somatic symptom disorder) and substance use disorder (opioids). After the first assessment, six follow-up visits were needed during hospitalization. Mirtazapine and benzodiazepines were introduced. Beside the pharmacological intervention, conflict mediation was performed in the relationship with the patient, her relatives, the ward personnel and the GP, to develop a long-term rehabilitation project. Pros and cons of online computer-assisted prescription software were discussed together with the ward personnel, as well.

Conclusions

Computer-assisted decision-making in psychotropic prescription is becoming more common and feasible. The use of available software may contribute to safety, effectiveness and cost-effectiveness of clinical decision-making. Risks are also possible: depending for example from regional differences in prescription indications, different guidelines, pharmacogenomics, frequency with which databases are updated, sponsorships, possible conflicts of interest, and real clinical significance of highlighted interactions – all issues the clinician willing to benefit from this modern tools should pay attention to.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Occupational health physicians and the impact of the Great Recession on the health of workers: a qualitative study

BACKGROUND

Italy is one of the Eurozone members where the 2008 "Great Recession" struck worst, with a 9% drop in national GDP between 2008 and 2013. The negative effects of the recession on the health of the Italian population were documented on a nation-wide level. However, few local or regional studies are currently available in the scientific literature.

OBJECTIVES

To assess the impact on workers' health of the economic recession in the industrial area of Sassuolo (Modena, Northern Italy), and to provide recommendations for targeted interventions.

METHODS

Two focus groups were conducted, involving 8 occupational health physicians (OHPs) active in the area. Rough descriptions were analyzed using MAXQDA 11, according to the principles of grounded theory.

RESULTS

261 segments were coded, divided into four areas. The first, "changes in contemporary world", pointed out that the recession may have just made pre-existing problems worse, accelerating reductions in staff and workers' benefits. The second, "social area", highlighted a decrease in vertical social capital and the beginning of new trends in emigration. The third, "work area", covered workers' fear of losing their jobs if they were ill and a reduction in horizontal social capital, namely difficult relations between co-workers. The fourth, "medical area", indicated a general worsening of workers' health in the Sassuolo ceramic district compared to previous years. The OHPs reported an increase in muscular-skeletal complaints, gastritis, tension-type headache, irritable bowel syndrome symptoms, back pain, panic attacks, insomnia, tachycardia, and other medically unexplained symptoms. Anxiety problems seemed to prevail over depressive manifestations. An increase was reported for antidepressants and benzodiazepines consumption.

CONCLUSIONS

The local impact of the economic crisis on health was mainly negative, consistent with available national data. Mental health professionals could work together with OHPs, e.g., through Balint Group-like meetings, to develop targeted psychosocial and clinical interventions addressing the medical, psychological and social needs of workers, also involving advocacy and fostering workers' empowerment.

Possible Gender-Related Modulation by the ROCK1 Gene in Colorectal Cancer Susceptibility

AIM

In view of accumulating evidence supporting a pivotal role of the Rho/ROCK pathway in cancer, we investigated Rho-kinase polymorphisms as potential susceptibility factors in colorectal cancer (CRC) in a representative sample of the Italian population.

METHODS

DNA obtained from the peripheral blood samples of 137 CRC patients and 141 healthy controls was genotyped for four ROCK1 (rs35996865; rs73963110; rs2127958; rs288980) and five ROCK2 (rs12692437; rs7563468; rs35768389; rs17463896; rs16857265) selected single nucleotide polymorphisms.

RESULTS

None of the allelic variants of the nine selected markers was associated with the occurrence of CRC or with the development of regional lymph node metastasis. By contrast, the ROCK1 rs35996865 G variant allele was significantly more frequent in male patients (p = 0.028) than in the control group.

CONCLUSION

This finding is, at present, the first that points to a possible gender-related modulation by the ROCK1 gene in CRC susceptibility.

The nano-epsilon dot method for strain rate viscoelastic characterisation of soft biomaterials by spherical nano-indentation

Nano-indentation is widely used for probing the micromechanical properties of materials. Based on the indentation of surfaces using probes with a well-defined geometry, the elastic and viscoelastic constants of materials can be determined by relating indenter geometry and measured load and displacement to parameters which represent stress and deformation. Here we describe a method to derive the viscoelastic properties of soft hydrated materials at the micro-scale using constant strain rates and stress-free initial conditions. Using a new self-consistent definition of indentation stress and strain and corresponding unique depth-independent expression for indentation strain rate, the epsilon dot method, which is suitable for bulk compression testing, is transformed to nano-indentation. We demonstrate how two materials can be tested with a displacement controlled commercial nano-indentor using the nano-espilon dot method (nano-ε̇M) to give values of instantaneous and equilibrium elastic moduli and time constants with high precision. As samples are tested in stress-free initial conditions, the nano-ε̇M could be useful for characterising the micro-mechanical behaviour of soft materials such as hydrogels and biological tissues at cell length scales.

Profile analysis of hepatic porcine and murine brain tissue slices obtained with a vibratome

This study is aimed at characterizing soft tissue slices using a vibratome. In particular, the effect of two sectioning parameters (i.e., step size and sectioning speed) on resultant slice thickness was investigated for fresh porcine liver as well as for paraformaldehyde-fixed (PFA-fixed) and fresh murine brain. A simple framework for embedding, sectioning and imaging the slices was established to derive their thickness, which was evaluated through a purposely developed graphical user interface. Sectioning speed and step size had little effect on the thickness of fresh liver slices. Conversely, the thickness of PFA-fixed murine brain slices was found to be dependent on the step size, but not on the sectioning speed. In view of these results, fresh brain tissue was sliced varying the step size only, which was found to have a significant effect on resultant slice thickness. Although precision-cut slices (i.e., with regular thickness) were obtained for all the tissues, slice accuracy (defined as the match between the nominal step size chosen and the actual slice thickness obtained) was found to increase with tissue stiffness from fresh liver to PFA-fixed brain. This quantitative investigation can be very helpful for establishing the most suitable slicing setup for a given tissue.

Human Multidrug Resistance 1 gene polymorphisms and Idiopathic Pulmonary Fibrosis

BACKGROUND

For the first time we tested an association between the human multidrug resistance gene 1 (MDR1) polymorphisms (SNPs) and idiopathic pulmonary fibrosis (IPF). Several MDR1 polymorphisms are associated with pathologies in which they modify the drug susceptibility and pharmacokinetics.

MATERIALS AND METHODS

We genotyped three MDR1 polymorphisms of 48 IPF patients and 100 control subjects with Italian origins.

RESULTS

No evidence of association was detected.

CONCLUSION

There are 50 known MDR1 SNPs, and their role is explored in terms of the effectiveness of drug therapy. We consider our small-scale preliminary study as a starting point for further research.

Strain rate viscoelastic analysis of soft and highly hydrated biomaterials

Measuring the viscoelastic behavior of highly hydrated biological materials is challenging because of their intrinsic softness and labile nature. In these materials, it is difficult to avoid prestress and therefore to establish precise initial stress and strain conditions for lumped parameter estimation using creep or stress-relaxation (SR) tests. We describe a method ( ɛ˙M or epsilon dot method) for deriving the viscoelastic parameters of soft hydrated biomaterials which avoids prestress and can be used to rapidly test degradable samples. Standard mechanical tests are first performed compressing samples using different strain rates. The dataset obtained is then analyzed to mathematically derive the material's viscoelastic parameters. In this work a stable elastomer, polydimethylsiloxane, and a labile hydrogel, gelatin, were first tested using the ɛ˙M, in parallel SR was used to compare lumped parameter estimation. After demonstrating that the elastic parameters are equivalent and that the estimation of short-time constants is more precise using the proposed method, the viscoelastic behavior of porcine liver was investigated using this approach. The results show that the constitutive parameters of hepatic tissue can be quickly quantified without the application of any prestress and before the onset of time-dependent degradation phenomena.

Local-field enhancement effect on the nonlinear optical response of gold-silver nanoplanets

We report on the nonlinear optical properties of Au-Ag nanoplanets produced by ion implantation and irradiation in silica, experimentally investigated by means of the single beam z-scan technique. The measurements provided experimental evidence of the intense local-field enhancement effect theoretically demonstrated for these plasmonic nanosystems. In particular, this has a dramatic impact on their nonlinear absorption behavior and results in a tunable changeover from reverse saturable absorption to saturable absorption by slightly varying the pump intensity and in the possibility to activate and observe nonlinear phenomena of the electron dynamics otherwise unaccessible in the intensity range that can be employed to study these materials. Finally, for the nanoplanet configuration we found a dramatic decrease of the intensity-dependent absorption coefficient, which could be very promising for obtaining optical gain materials.

The EGFR R521K polymorphism influences the risk to develop colorectal cancer

Epidermal growth factor receptor (EGFR) family members (EGFR, HER2, HER3 and HER4) have been extensively investigated for its possible involvement in cancer development and progression. In colorectal cancer (CRC) EGFR family has been found frequently over-expressed, thus therapy targeting EGFR has been developed. Interestingly, it has been observed that genetic variants in these receptors may alter the therapeutic efficacy of EGFR inhibitors. Polymorphic variants in members of the EGFR family could influence different biologic activities, such as ligands affinity, dimerization efficiency, kinase activity, expression levels, with a consequent impact in signalling pathways and cell behaviour. This study aimed to verify whether single nucleotide polymorphisms (SNPs) of EGFR family members could represent susceptibility factors able to influence the risk to develop CRC. Peripheral blood of 70 Italian colon cancer patients and 72 healthy controls was used as a source of genomic DNA to investigate EGFR, HER2 and HER3 common non-synonymous SNPs. Genetic association tests were performed to verify a possible relationship with CRC. Evidence of genotype association was found for the R521K EGFR polymorphism under a dominant mode of inheritance (Mid-P=0.031). Genotypes with the variant allele of EGFR R521K SNP confer a risk reduction to develop CRC.

Gene expression profile of human colon cancer cells treated with cross-reacting material 197, a diphtheria toxin non-toxic mutant

Cross-Reacting Material 197 (CRM197) is a diphtheria toxin non-toxic mutant that has shown antitumor activity in mice and humans. It is still unclear whether this anti-tumorigenic effect depends on its strong inflammatory-immunological property, its ability to inhibit heparin-binding epidermal growth factor (HB-EGF), or even its possible weak toxicity. CRM197 is utilized as a specific inhibitor of HB-EGF that competes for the epidermal growth factor receptor (EGFR), overexpressed in colorectal cancer and implicated in its progression. In this study we evaluate the effects of CRM197 on HT-29 human colon cancer cell line behaviour and, for CRM197 recognized ability to inhibit HB-EGF, its possible influence on EGFR activation. In particular, while HT-29 does not show any reduction of viability after CRM197 treatment (MTT modified assay), or changes in cell cycle distribution (flow cytometry), in EGFR localization, phospho-EGFR detected signals (immunohistochemistry) or in morphology (scanning electron microscopy, SEM) they show a change in the gene expression profile by microarray analysis (cDNA microarray SS-H19k8). The overexpression of genes like protein phosphatase 2, catalytic subunit, alpha isozyme (PPP2CA), guanine nucleotide-binding protein G subunit alpha-1(GNAI1) and butyrophilin, subfamily 2, member A1 (BTN2A1) has been confirmed with real-time-qPCR. This is the first study where the CRM197 treatment on HT-29 shows a possible scarce implication of endogenous HB-EGF on EGFR expression and cancer cell development. At the same time, our results show the alteration of a specific and selected number of genes.

Stability of extreme ultraviolet multilayer coatings to low energy proton bombardment

In this work we present results of an new experiment related to low energy protons bombardments on nano-structured optical coatings. Multilayer structures protected by different capping layers have been fabricated and exposed to low energy protons (1 keV). The experimental parameters have been selected considering the potential application of the coatings to solar mission instrumentation. Future solar missions will investigate the Sun from very close distances and optical components are constantly exposed to low energy ion particles irradiation. The experiment was repeated fixing the proton flux while varying the total dose accumulated. Results show that physical processes occurred at the uppermost interfaces can strongly damage the structure.

CdS and ZnS Nanoparticles Growth in Different Reaction Media: Synthesis and Characterization

In this work we report on the growth of cadmium sulfide and zinc sulfide nanocrystals by thermolysis, starting from a metal thiolate in a (i) solventless way, (ii) by a novel route in tryoctilphosphine oxide (TOPO), and (iii) by direct synthesis in a polystyrene matrix. The x-ray diffraction (XRD) and transmission electron microscopy (TEM) show that the nanocrystals fabricated by the different methods are under optimized growth conditions single crystals of zincblende structure and of regular spherical shape. The average size was estimated to be between 2.0-3.0 nm with a size dispersion that depends on the synthesis route and is in the range between 10% and 20%. The XPS results indicate that for the nanoparticles obtained via solventless strategy the sulfur is present both as bonded to the metal atom and to the organic residue, while in the TOPO synthesized nanoparticles the sulfur signal has only one component associated to the metal-sulfide bond. The photoluminescence spectroscopy (PL) analysis of CdS crystals clearly evidences the typical emissions of nanosized zincblende CdS monocrystalline particles. Furthermore, the optical spectroscopy data indicate that the size distribution of the Cdsulfide - TOPO nanoparticles seems to be generally larger than that ones grown directly in polymer matrix. For all the CdS samples, the metal-sulfide nanocrystals exhibit a trap-related radiative transition at about 2eV that can be attributed to the hole-electron recombination at particle surface defect-center.