We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure coreplatform@cambridge.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Childhood maltreatment (CM) is one of the best described environmental risk factors for developing any psychiatric disorder, while it also confers increased odds for obesity, cardiometabolic disorders and all-cause mortality. Inflammation has been suggested to mediate the widespread clinical effects of CM. Previously, Ligthart et al. (2016) identified a polyepigenetic signature of circulating CRP levels, a measure of chronic low-grade inflammation, that has been reliably associated with a wide array of complex disorders. The study of this biomarker could dilucidate the mechanistic relationship between CM and psychiatric outcomes.
Objectives
Thus, CRP-associated epigenetic modifications were explored regarding proximal exposure to CM.
Methods
Genomic DNA was extracted from peripheral blood mononuclear cells of 157 children and adolescents (7 to 17 years old). Exposure to CM was assessed following the TASSCV criteria. Genome-wide DNA methylation was assessed by means of the EPIC array. Fifty-two out of the 58 original CRP-associated CpG sites surpassed quality control and were included in the analysis. Age, sex, psychopathological status and cell type proportions were included as covariates.
Results
DNA methylation at 12 out of 52 CpG sites (23%) was significantly associated with exposure to CM (p < .05); 8 of these associations survived correction for multiple testing (q < .05).
Conclusions
This is the first study to date to explore the relationship between childhood maltreatment and an epigenetic signature of chronic low-grade inflammation. Our findings underscore the presence of immune dysregulation early after exposure to CM; further studies are needed to assess the long-term clinical implications of this signature in psychiatric patients.
COVID19 keeps being a challenge, not only facing the outbreak and the treatment of the cases, but also in the education sector. Most learning centres and high schools in the world are closed to avoid further outbreaks, as well as institutes for psychotherapy throughout the world.
Objectives
To gain a better knowledge and understanding about alternatives identified in the scope of psychiatric trainee training, through the support provided by digital resources.
Methods
Systematic review on PubMed and Uptodate databases since declaration of the COVID-19 pandemic in March 2020 was performed using the keywords: Distance Education, Pandemia, COVID-19, Medical Residency. Discussing online-learning.
Results
The described European countries (Germany, Spain, United Kingdom) used different strategies to maintain the e-learning. Practical undergraduate education was replaced in countries like Spain by “problem-based learning” tasks, clarifying and commenting case reports or videos through working groups. The increase of the resources from teachers and trainers wasn´t taken in account for the preparation of the digital program. Social inequities for the digital access for groups of students or clients were also claimed.
Conclusions
Each of the described countries adopted different strategies regarding continuing training of residents, their assessment and their certification. Covid-19 should set down a trend of social collaborative learning as part of resident training and asset hybrid or even digital methods for the mental health training.
We present the first results obtained from an extensive study of eclipsing binary (EB) system candidates recently detected in the VISTA Variables in the Vía Láctea (VVV) near-infrared (NIR) Survey. We analyse the VVV tile d040 in the southern part of the Galactic disc wherein the interstellar reddening is comparatively low, which makes it possible to detect hundreds of new EB candidates. We present here the light curves and the determination of the geometric and physical parameters of the best candidates found in this ‘NIR window’, including 37 contact, 50 detached, and 13 semi-detached EB systems. We infer that the studied systems have an average of the
$K_s$
amplitudes of
$0.8$
mag and a median period of 1.22 days where, in general, contact binaries have shorter periods. Using the ‘Physics Of Eclipsing Binaries’ (PHOEBE) interactive interface, which is based on the Wilson and Devinney code, we find that the studied systems have low eccentricities. The studied EBs present mean values of about 5 700 and 4 900 K for the
$T_1$
and
$T_2$
components, respectively. The mean mass ratio (q) for the contact EB stars is
$\sim$
0.44. This new galactic disk sample is a first look at the massive study of NIR EB systems.
The main objective of this study was to analyse the clinical and neuropsychological profile of a sample of Brazilian children with ADHD, in order to contribute for diagnostic procedures. Participants were 150 children aged 7 to 14 with complaints of attention difficulties and/or hyperactivity. They were assessed by a multidisciplinary team with a battery of neuropsychological tests.
Results:
75 children (55 male) fulfilled the criteria for ADHD: 35 of inattentive type, 28 of combined type and 12 hyperactive/impulsive. In addition, 33 (44%) of the children had comorbities. Children with higher scores for hyperactivity and impulsivity showed low performance in these working memory measures than those with other types. In the Conners’ Continuous Performance Test (CPT), a higher rate of omissions was found in the inattentive group. Children with comorbidity of oppositional desafiant disorder presented lower ISI and Hit RT scores in addition to higher rates of omission.
Conclusion:
This study suggests that neuropsychological profile in children with ADHD is associated to specific differences in working memory performance and also in specific measures of the CPT. In addition, better defined tests, involving not only attention and motor planning may determine different neuropsychological profiles and, consequently, different approaches in cognitive rehabilitation.
Cocaine dependence disorder has been widely described. However, differences due to gender remain unknown.
Aim
To compare clinical gender differences in a large sample of cocaine-dependent patients.
Methods
We performed a cross-sectional, observational study in 902 patients (35.47 yo, 21.3% women) with a cocaine dependence according DSM-IV criteria, seeking treatment during 2005 to 2013. Sociodemographic and clinical variables were collected The SCID-I, SCID–II, BIS and a structured interview about cocaine-induced psychosis were performed. Simple descriptive statistics were carried out for demographic and clinical data. Bivariate analysis was made to compare the main variables by sex using SPSSvs18.0.
Results
No differences in age of dependence onset, other clinical variables or cocaine-induced psychosis were detected. However, less cocaine used in the last month (2.12 vs 3.37g) (p < 0.009), more impulsivity (67.2 vs 63.03) (p < 0.040), and more sedative dependence (21.2% % vs 8.3%)(p< 0.00) were detected in women than in men. Affective disorders lifetime were the most prevalent (57,4%) in women. More comorbidity with anxiety disorders (p< 0.025) eating disorders (p< 0.000) and personality disorders (p< 0.039) were detected in women than in men.
Conclusions
Sedative dependence and anxiety disorders should be investigated in cocaine-dependent women in order to treat these conditions. Surprisingly high impulsivity level was detected and could moderate cocaine consumption. However, no difference have been found previously in studies about gender differences in cocaine-dependent patients, so this finding should be confirm in new studies.
Antidepressant withdrawal mania is a rare paradoxical event. It was initially reported in unipolar patients but it can also occur in bipolar patients, despite adequate mood-stabilizing treatment. It has been described with all antidepressant classes and may be self-limited or require medical hospitalization. Tapered withdrawal doesn’t seem to prevent the condition, though most reported cases developed after abrupt antidepressant discontinuation. Chronic antidepressant therapy enhances dopaminergic neurotransmission in the mesolimbic system. Noradrenergic hyperactivity and cholinergic overdrive secondary to antidepressant cessation are the most accepted theoretical mechanisms proposed.
Objectives
Case report, discussion and literature review.
Aims
We report a case of fluoxetine withdrawal mania and discuss its implications on clinical practice.
Methods
Case report and non systematic literature review.
Results
We present a case of a divorced 59-year-old woman who developed a manic episode shortly after antidepressant discontinuation. She was under antidepressant therapy since 2001, due to an unipolar chronic depressive disorder. She was put on fluoxetine 20 mg q.d. since 2005. On May 2012, she discontinued the antidepressant therapy upon misunderstanding medical advice. Few weeks later, she was involuntarily admitted to our inpatient unit presenting a manic episode with psychotic features. She started valproic acid 1000 mg q.d. and risperidone 4 mg q.d. and a complete remission was quickly obtained.
Conclusions
This case illustrates the potential for mania related to antidepressant discontinuation. Differential diagnosis includes spontaneous mania, antidepressant withdrawal syndrome and antidepressant induced mania. Finally, the authors discuss the adequacy of categorizing this entity in bipolar spectrum disorders.
Synthetic cathinones, the active component in “bath salts”, have surfaced as a popular alternative to other illicit drugs of abuse, such as cocaine, MDMA (ecstasy), and methamphetamine, due to their potent psychostimulant and empathogenic effects.
Objectives
To describe the presence of Ethylone in samples delivered to energy control from 2014 to 2015 in Spain.
Methods
The total number of samples analyzed from 2014 to 2015 was 8324. Only those samples containing ethylone were studied. They were analyzed by energy control, a Spanish harm reduction NGO that offers the possibility of analysing the substances that users report. Analysis was done by gas chromatography-mass spectrometry.
Results
From June 2014 to December 2015, 8324 samples were delivered to EC. From this samples 28 (0.336%) contained ethylone. Twelve (0.144%) were delivered as MDMA, representing a 0.783% of the samples delivered as such, and only one sample (0.012%) delivered as MDMA presented ethylene as an adulterant along with MDMA. Other 6 samples (0.072%) were delivered as ethylone and 10 samples (0.120%) were delivered as unknown pills.
Discussion
Ethylone consumption is found to be an emerging issue according to the results of our samples, an increase of such is found during 2015. This might be traduced as an increase of ethylone in the drug market, but a sample selection bias should be considered as samples were voluntary delivered by consumers. An alarming phenomenon is that in some occasions ethylone is sold as MDMA, but effects take longer to occur and last longer, which may lead to an overdose if used as MDMA.
Disclosure of interest
The authors have not supplied their declaration of competing interest.
Pain medication misuse is commonly found in patients under headache treatment and may produce co-morbid anxiety and depressive symptomatology. Management of this issue requires a comprehensive and integrative treatment including psychotherapy. Group interventions have been scarcely studied in addictive disorders, those interventions aims to decrease drug misuse and improve related psychiatric symptoms.
Aim
To study the efficacy of group interventions base on cognitive-behavior approach in patients with pain medication misuse.
Method
Patients with pain medication misuse were included and were evaluated with BDI, STAI, SF36 and HIT scales (basal and at the end of treatment sessions). Patients were recruited from headache outpatient unit. Twelve sessions of one hour were performed with a cognitive-behavior approach (weekly).
Results
We present preliminary results about the efficacy of group interventions in patients with pain medication misuse. Descriptive results pre- and post- treatment were analyzed in depressive symptoms (M = 20.14, SD = 12.25; M = 14.67, SD = 19.50) and in areas of quality of life: physical functioning (M = 48.75, SD = 31.13; M = 60.50, SD = 41.68), bodily pain (M = 12, SD = 9.25; M = 42.75, SD = 34.09), general health perceptions (M = 25.75, SD = 16.96; M = 44.25, SD = 22.33), vitality (M = 33.75, SD = 13.82; M = 48, SD = 34.82).
Conclusions
Pain medication misuse is commonly found in chronic headache patients, consequently worst outcomes for both pathologies. Group interventions may be useful in management of pain, anxiety and other comorbidities. Furthermore, it may favor drug use decrease and even abstinence.
Disclosure of interest
The authors have not supplied their declaration of competing interest.
Legal and illegal drugs can cause psychotic symptoms, in cocaine-dependent patients the prevalence of these symptoms may reach 86% (Vorspan, 2012). It is estimated that 13–32% of cocaine-dependent patients have kinaesthetic hallucinations (Siegel, 1978; Mahoney, 2008; Roncero, 2012).
Objectives
To compare the prevalence of substance-induced psychotic symptoms and compare the use of welfare/social resources and social adjustment among cocaine-dependent patients (CD) and other substances dependences (OtherD).
Methods
Two hundred and six patients seeking treatment at the Addictions and Dual Diagnosis Unit of the Vall d’Hebron. Patients were assessed by ad hoc questionnaire designed to collect demographic data and psychotic symptoms associated with consumption, a record of the care/social resources used by the patient and the scale of social adaptation (SASS). A descriptive and bivariate analysis of the data was performed.
Results
CD were 47.1% vs. 52.9% OtherD (66.1% alcohol, 17.4% cannabis, 8.3% opioid, 8.3% benzodiazepines/other drugs). Of cocaine dependent-patients, 65.6% present psychotic symptoms vs. 32.1% for the OtherD. Different exhibiting psychotic symptoms are: self-referential (69.7% vs. 30.7%), delusions of persecution (43.4% vs. 12.2%), hallucinations (49.4% vs. 14.3%), auditory hallucinations (43.5% vs. 11.4%), visual hallucinations (30.4% vs. 5.7%) and kinaesthetic hallucinations (7.2% vs. 2.9%).
Cocaine-dependent patients significantly use more health care resources in reference addiction unit (76.3% vs. 62.4%, P:.035) and infectious diseases (22.7% vs. 5.5%, P:.000) and justice-related (50.5% vs. 26 resources 0.6%; P:1.001) and less resources and mental health (25.8% vs. 43.1%; P:.013).
Regarding social adaptation, no differences were found in the SASS. Kinaesthetic hallucinations do not appear to be related to a greater use of resources and in social adaptation.
References not available.
Disclosure of interest
The authors have not supplied their declaration of competing interest.
Although psychoactive substances has a long history in recreational settings, research on its composition has focused only on tablets, crystal and powder, even though new formulation for new psychoactive substances are readily available for users.
Objectives
To describe the presence of psychoactive substances and its characteristics in new formulations which had not previously been found in samples delivered to Energy Control from 2014 to 2015 in Spain.
Methods
A total of 8324 samples were analysed from June 2014 to December 2015. Only those samples in gummy formulation were studied (n = 9). Samples were analyzed by energy control, a Spanish harm-reduction NGO that offers analysis of substances to users. Analysis was done by gas chromatography-mass spectrometry.
Results
From 9 samples of psychoactive substances in gummy formulation, the analysis detected that 55.5% contained multiple psychoactive substances: 6 samples contained 25N-NBOMe (66.7%), 1 2C-E (11.1%), 1 2C-D (11.1%). Two allylescaline (20%), 1 cocaine (11.1%), 1 THC (11.1%), 1 canabinol (11.1%), 1 ketamine (11.1%), 1 caffeine (11.1%), 1 MDMA (11.1%), 1 N-acetyl-MDMA (11.1%), 1 metoxetamine (11.1%), 1 N-acetyl-MDMA), 1 2C-N (11.1%). The only substance found in active dosage was 25N-NBOMe. Six samples (66.67%) did not contain the substance expected by the consumer.
Discussion
Incipient presence of gummies as new psychoactive formulation was found. The most prevalent drug was 25N-NBOMe; 66.7% did not contain the substance expected. This may pose a risk for potential harmful effects. All the gummies were known to be drug-carriers when bought. This could represent the presence of new formulations from June 2014 in the Spanish recreational market.
Disclosure of interest
The authors have not supplied their declaration of competing interest.
Due to the continuous search for new, legal, less expensive, and more powerful highs by drug users, the synthesis of novel cathinone derivatives has become a fruitful industry, leading to a fast emergence of new alternative substances every year. Methylone (3,4-methylenedioxy-N-methylcathinone) is one of the substances that rapidly emerged as the main ingredient of “bath salts”, becoming readily accessible on the Internet. This fact has raised concerns about its potential harmfulness.
Objectives
The aim of the present study is to analyze the presence of methylone in samples delivered to energy control from 2014 to 2015 in Spain.
Methods
A total of 8324 samples were assessed from June 2014 to May 2015. Only those samples acquired as methylone were studied. They were analyzed by energy control, a Spanish harm reduction NGO that offers the possibility of analyzing the substances that users report. Analysis was done by gas chromatography-mass spectrometry.
Results
Ten users reported to have acquired methylone (0.12%). The most used source for acquiring it was the Internet (60%). Other sources included a friend or relative (10%), home-delivered (10%) or undetermined (20%). There was no peak of consume as 50% were acquired in 2014 and 50% in 2015.
Discussion
According to the results, the presence of methylone in our samples is extremely low. Therefore, despite the fact that methylone monitorization is ought to be carried out, this substance is not expected to be an emerging issue concerning Public Health and no further clinical research should be done.
Disclosure of interest
The authors have not supplied their declaration of competing interest.
Barramundi (Lates calcarifer) are a highly valued aquaculture species, and, as obligate carnivores, they have a demonstrated preference for dietary protein over lipid or starch to fuel energetic growth demands. In order to investigate how carnivorous fish regulate nutritional cues, we examined the metabolic effects of feeding two isoenergetic diets that contained different proportions of digestible protein or starch energy. Fish fed a high proportion of dietary starch energy had a higher proportion of liver SFA, but showed no change in plasma glucose levels, and few changes in the expression of genes regulating key hepatic metabolic pathways. Decreased activation of the mammalian target of rapamycin growth signalling cascade was consistent with decreased growth performance values. The fractional synthetic rate (lipogenesis), measured by TAG 2H-enrichment using 2H NMR, was significantly higher in barramundi fed with the starch diet compared with the protein diet (0·6 (se 0·1) v. 0·4 (se 0·1) % per d, respectively). Hepatic TAG-bound glycerol synthetic rates were much higher than other closely related fish such as sea bass, but were not significantly different (starch, 2·8 (se 0·3) v. protein, 3·4 (se 0·3) % per d), highlighting the role of glycerol as a metabolic intermediary and high TAG-FA cycling in barramundi. Overall, dietary starch significantly increased hepatic TAG through increased lipogenesis. Compared with other fish, barramundi possess a unique mechanism to metabolise dietary carbohydrates and this knowledge may define ways to improve performance of advanced formulated feeds.
The environmental problems caused by the persistence and improper disposal of single use plastics, have led the worldwide authorities to migrate into a sustainable production of bio-based materials, whose components need to be studied for proving their nature and to confirm their degradability. For this reason, the identification and monitoring degradation of five single use straws were assessed through FT-IR, TGA/DTA and SEM techniques which demonstrate that the straws tagged as biodegradable contain polymers of fossil origin in their formulation. Degradation of them was found to be influenced by polar groups, such as ester and glycosidic bonds of the biodegradable phase. The thermal stability decreased and the morphological characteristics as cracks and holes were detected after biodegradation.
Reducing the risk of human immunodeficiency virus type 1 (HIV-1) transmission is still a public health priority. The development of effective control strategies relies on the quantification of the effects of prophylactic and therapeutic measures in disease incidence. Although several assays can be used to estimate HIV incidence, these estimates are limited by the poor performance of these assays in distinguishing recent from long-standing infections. To address such limitation, we have developed an assay to titrate p24-specific IgG3 antibodies as a marker of recent infection. The assay is based on a recombinant p24 protein capable to detect total IgG antibodies in sera using a liquid micro array and enzyme-linked immunosorbent assay. Subsequently, the assay was optimised to detect and titrate anti-p24 IgG3 responses in a panel of sequential specimens from seroconverters over 24 months. The kinetics of p24-specific IgG3 titres revealed a transient peak in the 4 to 5-month period after seroconversion. It was followed by a sharp decline, allowing infections with less than 6 months to be distinguished from older ones. The developed assay exhibited a mean duration of recent infection of 144 days and a false-recent rate of ca. 14%. Our findings show that HIV-1 p24-specific IgG3 titres can be used as a tool to evaluate HIV incidence in serosurveys and to monitor the efficacy of vaccines and other transmission control strategies.
In order to guarantee the success of the nascent cellulose-based biofuel industry, it is crucial to identify the most economically relevant components of the biofuel production path. To this aim, an original stochastic financial model is developed to estimate the impact that different feedstock production and biofuel conversion parameters have on the probability of economic success. Estimation of the model was carried out using Monte Carlo simulation techniques along with parametric maximum likelihood estimation procedures. Results indicate that operational efficiency strategies should concentrate on improving feedstock yields and extending the feedstock growing season.
We examined functional outcomes and quality of life of whole brain radiotherapy (WBRT) with integrated fractionated stereotactic radiotherapy boost (FSRT) for brain metastases treatment. Methods Eighty seven people with 1-3 brain metastases were enrolled on this Phase II trial of WBRT (30Gy/10)+simultaneous FSRT, (60Gy/10). Results Mean (Min-Max) baseline KPS, Mini Mental Status Exam (MMSE) and FACT-BR quality of life were 83 (70-100), 28 (21-30) and 143 (98-153). Lower baseline MMSE (but not KPS or FACT-Br) was associated with worse survival after adjusting for age, number of metastases, primary and extra-cranial disease status. Crude rates of deterioration (>10 points decrease from baseline for KPS and FACT-Br, MMSE fall to<27) ranged from 26-38% for KPS, 32-59% for FACT-Br and 0-16%for MMSE depending on the time-point assessed with higher rates generally noted at earlier time points (<6months post-treatment). Using a linear mixed models analysis, significant declines from baseline were noted for KPS and FACT-Br (largest effects at 6 weeks to 3 months) with no significant change in MMSE. Conclusions The effects on function and quality of life of this integrated treatment of WBRT+simultaneous FSRT were similar to other published series combining WBRT+SRS.
This study investigates the potential impacts of food safety outbreaks on domestic shipments, imports, and prices of the produce industry. Three case studies were analyzed to assess these potential impacts: the cantaloupe outbreak of March–April 2008, the spinach outbreak of September 2006, and the tomato outbreak of June–July 2008. Data-determined historical decompositions were conducted to provide a weekly picture of domestic shipment, import, and price fluctuation transmissions. The empirical analysis based on a vector autoregression (VAR) model showed differences in the results depending on the source of the outbreak (domestic vs. imported).
To evaluate the role of methadone in the management of intractable neuropathic noncancer pain.
Methods:
A case series of 50 consecutive noncancer pain patients who were seen at a tertiary care centre and treated with oral methadone for a variety of intractable neuropathic pain states.
Results:
The mean age was 52.7 years and the mean duration of follow-up was 13.9 months. Post-discectomy nerve root fibrosis, complex regional pain syndrome, peripheral neuropathy and central spinal cord pain syndromes were the most common diagnoses. Over 90% had been treated with one or more tricyclic antidepressants and anticonvulsants and a similar number had received other adjuvant analgesics. All patients had failed treatment with one or more conventional opioid analgesics (mean 2.8) at a mean maximal morphine dose of 384 mg (or equivalents) per day. Twelve patients had failed spinal cord stimulation. Nineteen patients (38%) did not tolerate initial methadone titration or thought their pain was worse on methadone. Five patients (10%) declared initial benefit but required repetitive dose escalation and eventually became non-responders. Twenty-six patients (52%) reported mild (4), moderate (15), marked (6) or complete (1) pain relief and continued on methadone at a mean maintenance dose of 159.8 mg/day for a mean duration of 21.3 months. Fourteen patients (28%) reported improved function on methadone relative to previous treatments.
Conclusions:
Methadone appears to have unique properties including N-methyl-D-aspartate antagonist activity that may make it especially useful in the management of intractable neuropathic pain. This observation needs to be tested in randomized, controlled trials.
This work provides a global optimization analysis, looking for perturbations inducing the largest energy growth at a finite time in a boundary-layer flow in the presence of smooth three-dimensional roughness elements. Amplification mechanisms are described which can bypass the asymptotical growth of Tollmien–Schlichting waves. Smooth axisymmetric roughness elements of different height have been studied, at different Reynolds numbers. The results show that even very small roughness elements, inducing only a weak deformation of the base flow, can localize the optimal disturbance characterizing the Blasius boundary-layer flow. Moreover, for large enough bump heights and Reynolds numbers, a strong amplification mechanism has been recovered, inducing an increase of several orders of magnitude of the energy gain with respect to the Blasius case. In particular, the highest value of the energy gain is obtained for an initial varicose perturbation, differently to what found for a streaky parallel flow. Optimal varicose perturbations grow very rapidly by transporting the strong wall-normal shear of the base flow, which is localized in the wake of the bump. Such optimal disturbances are found to lead to transition for initial energies and amplitudes considerably smaller than sinuous optimal ones, inducing hairpin vortices downstream of the roughness element.