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Mexico has a wealth of plant genetic resources, including Capsicum species. In southern Mexico, specifically in the western part of the Yucatan Peninsula, Maya farmers have preserved a great diversity of chilli pepper landraces of C. annuum, C. frutescens and C. chinense. However, the morphological diversity, capsaicinoid content, conservation status and potential use of these species have not been studied. To fill this gap and generate information to support the conservation and use of these species, we characterized the phenotypic diversity and capsaicinoid content for nine chilli pepper landraces from the western Yucatan Peninsula by assessing 15 quantitative and 39 qualitative traits for 10 plants of each landrace. For quantitative variables, two groups of chilli pepper landraces were obtained by principal component analysis and cluster analysis. Group I was formed by Rosita, Bobo, Dulce, Xcat'ik1, Xcat'ik2 and Verde landraces; Group II included the Maax, Bolita and Pico Paloma landraces. For qualitative variables, three groups of chilli pepper landraces were obtained; Group I included Dulce, Bobo, Xcat'ik1, Xcat'ik2 and Verde landraces, Group II only included the Rosita landrace, and Group III included Maax, Bolita and Pico Paloma landraces. Ultra-performance liquid chromatography–photodiode array (UPLC-PDA) quantification of capsaicinoids indicated higher values in landraces Rosita (14,062.3 μg/g D.W), Bolita (5928.1 μg/g D.W), Maax (3438.4 μg/g D.W) and Pico Paloma (3138.9 μg/g D.W). The Yucatan chilli pepper landraces provide valuable diverse germplasm for morphological characteristics and capsaicinoid content that can be used in breeding and conservation programmes.
To use Internet search data to compare duration of compliance for various diets.
Using a passive surveillance digital epidemiological approach, we estimated the average duration of diet compliance by examining monthly Internet searches for recipes related to popular diets. We fit a mathematical model to these data to estimate the time spent on a diet by new January dieters (NJD) and to estimate the percentage of dieters dropping out during the American winter holiday season between Thanksgiving and the end of December.
Internet searches in the USA for recipes related to popular diets over a 15-year period from 2004 to 2019.
Individuals in the USA performing Internet searches for recipes related to popular diets.
All diets exhibited significant seasonality in recipe-related Internet searches, with sharp spikes every January followed by a decline in the number of searches and a further decline in the winter holiday season. The Paleo diet had the longest average compliance times among NJD (5.32 ± 0.68 weeks) and the lowest dropout during the winter holiday season (only 14 ± 3 % dropping out in December). The South Beach diet had the shortest compliance time among NJD (3.12 ± 0.64 weeks) and the highest dropout during the holiday season (33 ± 7 % dropping out in December).
The current study is the first of its kind to use passive surveillance data to compare the duration of adherence with different diets and underscores the potential usefulness of digital epidemiological approaches to understanding health behaviours.
Methane (CH4) is a greenhouse gas (GHG) produced and released by eructation to the atmosphere in large volumes by ruminants. Enteric CH4 contributes significantly to global GHG emissions arising from animal agriculture. It has been contended that tropical grasses produce higher emissions of enteric CH4 than temperate grasses, when they are fed to ruminants. A number of experiments have been performed in respiration chambers and head-boxes to assess the enteric CH4 mitigation potential of foliage and pods of tropical plants, as well as nitrates (NO3−) and vegetable oils in practical rations for cattle. On the basis of individual determinations of enteric CH4 carried out in respiration chambers, the average CH4 yield for cattle fed low-quality tropical grasses (>70% ration DM) was 17.0 g CH4/kg DM intake. Results showed that when foliage and ground pods of tropical trees and shrubs were incorporated in cattle rations, methane yield (g CH4/kg DM intake) was decreased by 10% to 25%, depending on plant species and level of intake of the ration. Incorporation of nitrates and vegetable oils in the ration decreased enteric CH4 yield by ∼6% to ∼20%, respectively. Condensed tannins, saponins and starch contained in foliages, pods and seeds of tropical trees and shrubs, as well as nitrates and vegetable oils, can be fed to cattle to mitigate enteric CH4 emissions under smallholder conditions. Strategies for enteric CH4 mitigation in cattle grazing low-quality tropical forages can effectively increase productivity while decreasing enteric CH4 emissions in absolute terms and per unit of product (e.g. meat, milk), thus reducing the contribution of ruminants to GHG emissions and therefore to climate change.
The giant gypsum crystals of Naica cave have fascinated scientists since their discovery in 2000. Human activity has changed the microclimate inside the cave, making scientists wonder about the potential environmental impact on the crystals. Over the last 9 years, we have studied approximately 70 samples. This paper reports on the detailed chemical–structural characterization of the impurities present at the surface of these crystals and the experimental simulations of their potential deterioration patterns. Selected samples were studied by petrography, optical and electronic microscopy, and laboratory X-ray diffraction. 2D grazing incidence X-ray diffraction, X-ray μ-fluorescence, and X-ray μ-absorption near-edge structure were used to identify the impurities and their associated phases. These impurities were deposited during the latest stage of the gypsum crystal formation and have afterward evolved with the natural high humidity. The simulations of the behavior of the crystals in microclimatic chambers produced crystal dissolution by 1–4% weight fraction under high CO2 concentration and permanent fog, and gypsum phase dehydration under air and CO2 gaseous environment. Our work suggests that most surface impurities are of natural origin; the most significant anthropogenic damage on the crystals is the extraction of water from the caves.
Precision feeding requires a mathematical model to estimate standardized ileal digestible (SID) lysine (Lys) requirements (SIDLysR) in real time. However, this type of model requires constant calibration updates. The objective of this study was to review the calibration of the model used to estimate the real-time Lys requirements of individual growing-finishing pigs. A digestibility trial (n = 10) was conducted to evaluate amino acids digestibility during the growing and finishing phases. Additionally, 120 pigs were used in two 28-day growth experiments conducted as completely randomized design with growing (25 ± 2.1 kg BW, n = 60; 10 pigs per treatment) or finishing barrows (68.1 ± 6 kg BW, n = 60; 10 pigs per treatment). In each experiment, the pigs were divided into six equal treatment groups and fed 60%, 70%, 80%, 90%, 100% or 110% of their estimated individual SIDLysR. The Lys requirement of each pig was estimated daily using a real-time model. Body composition was measured with dual-energy X-ray densitometry on day 1 and 28 of the experiments. Average daily feed intake increased quadratically (P < 0.05) during both growth phases. Maximum average daily gain (ADG) (0.98 kg) and maximum protein deposition (PD; 170 g/day) were observed in growing pigs fed 100% of the estimated SIDLysR (P < 0.001). During the growing period, PD in BW gain (17% to 19%) and N efficiency (52% to 65%) increased linearly (P < 0.01) with increasing inclusion rates of SID Lys. Finishing pigs had maximum ADG (1.2 kg/day) when they were fed 100% of the requirements. However, the amount of protein in BW gain (13% to 16%) and N efficiency (40% to 55%) increased linearly (P < 0.01) with increasing inclusion rates of SID Lys. In conclusion, the model proposed for precision feeding is correctly calibrated to predict SIDLysR that maximize PD and ADG of average pigs from 25 to 50 kg BW. Still, there is an opportunity to improve the estimation of SIDLysR and N retention in individual pigs by better representing the individual proportion of protein in BW gain and the factors controlling the efficiency of Lys utilization in individual pigs.
Until now, no reliable biological markers of risk and relapse in substance-dependent patients have been identified. The yawn-inducing test with apomorphine has been proposed as a marker of the functional status of the dopaminergic system and therefore a predictor of suffering an addiction or predisposition to relapse.
Studying the safety and efficacy of apomorphine test as a predictor of relapse in intranasal cocaine dependent, diagnosed according to DSM-IV-TR.
We performed the test of apomorphine at the beginning (day 1) and end (day 11/12) of a detoxification program in 33 patients (29 men). The majority of patients relapsed after 22 weeks of follow up (87% relapse). The average yawns in the sample were 10.9 ± 9.3 in the initial test (Apo 1) and 10.2 ± 10.2 in the final test (Apo 2). The 42% of patients relapsed early (before 4 weeks) and 45% late (afther 4 weeks). 58% of the sample (N = 19), which did not fall belatedly filled an average of 8.0 yawns in Apo1 and 8.1 on Apo2 and 42% who did so early (N = 14), 14,8 in Apo1 and 14.6 in Apo2. Therefore there are an increased number of yawns in patients with early relapse. No important side effects were reported.
Patients with early relapse have a higher number of yawns that those falling late or abstainers The apomorphine test is a safe test and it is a readily applicable tool in clinical practice and may be a biological marker of risk.
Les hallucinations auditives sont un des symptômes fréquent et invalidants demeurant persistantes dans 20 à 30 % des cas et ce malgré les traitements antipsychotiques. Certaines théories suggèrent que les caractéristiques des hallucinations seraient liées à des dimensions psychologiques et émotionnelles pouvant expliquer le phénomène hallucinatoire, mais aussi à la croyance que le sujet halluciné accorde à ces voix [1,2].
L’objectif de cette étude est de mettre en évidence l’intérêt clinique des méthodes d’analyse de discours à travers des entretiens menés auprès de patients schizophrènes souffrant d’hallucinations auditives résistantes.
Des entretiens semi-dirigés ont été menés auprès de 10 sujets schizophrènes souffrant d’hallucinations résistantes. L’entretien a été construit autour de 10 thèmes principaux se rapportant aux croyances du sujet en rapport à son vécu hallucinatoire, tels que les intentions des voix, le pouvoir qui leur est attribué ou encore les stratégies de contrôle mis en œuvre. L’analyse des données s’est faite à l’aide du logiciel Alceste  permettant d’effectuer de manière systématisée et automatisée l’analyse d’entretiens ou de textes. Elle repose sur une classification descendante hiérarchique conduisant à la mise en évidence de mondes lexicaux par la construction de classes de discours mettant en évidence les mots les plus récurrents et significatifs dans le discours du sujet.
Les résultats de l’analyse sur 10 sujets ont permis de mettre en évidence des classes de discours renvoyant à des processus psychologiques particuliers, concernant le vécu et les relations qu’entretient le sujet avec ses voix. Nous pensons que ces processus, jusque-là sous-estimés et donc peu analysés pourraient constituer une piste d’exploration du caractère résistant des hallucinations.
Fiction films offer unexplored opportunities of rehabilitation for schizophrenia and other psychoses. Schizophrenia produces deficits y distortions in the perception and comprehension of reality, also expressed in the perception and comprehension of films. After a year of an “ad hoc” experience, the following technique was developed:
1) Selecting a fiction film for its narrative, affective, cognitive and social cognitive content
2) Briefly presenting of the film to a group of 8-16 patients with diverse psychosis.
3) Screening of the film to the patients and the therapeutic team.
4) Summarizing of the plot by a patient. Group correcting of distortions and deficits caused by problems of attention and working memory, as well as positive, negative, affective and social cognitive symptoms (emotional perception, theory of mind, attributive style)
5) Selecting 1-2 sequences by each patient, and group commenting using the same technique.
6) Field recording of all the commentaries obtained.
7) Second screening of the film two days after, repeating points 2 to 6.
8) Comparing both field records.
An experimental study using this technique is presented. 8 patients with schizophrenia and other psychoses watched 4 fiction films (“The 39 Steps”, “Charade”, “M”, “The General”). The differences founded in both viewings by two external evaluators (using CGI and analogical scales of the main variables) are presented and commented. An evaluation of the perceived usefulness and satisfaction of the participants was included.
Comorbidity between Substance Use Disorder (SUD) and other psychiatric disorders, known as Dual Diagnosis, is an issue of growing interest in Mental Health. The high association between Personality Disorders (PD) and substance use is reported in scientific literature. However, not many studies have been published regarding the prevalence of this disorder in a psychiatric unit. AIMSTo determine the prevalence of substance abuse among patients with a Personality Disorder in a psychiatric unit.
A retrospective descriptive study was carried out among all patients admitted to our psychiatric unit during one year. The data collected from the discharge clinical records of patients were: demographic variables, personal psychiatric history and substance use, urine tests and clinical diagnoses at discharge.
We obtained a sample of 334 patients. There was comorbidity between Mental Disorder and SUD in 10.17% of subjects; including 4% diagnosed with Personality Disorder (80% belong to Cluster B). 53.3% of patients with PD substance abuse was reported. Excluding nicotine dependence and benzodiazepines, the most common substances used were cannabis (50%), alcohol (37.5%) and cocaine (25%).
This study shows that Personality Disorder is the Mental Disorder most commonly associated with SUD, among inpatients in our psychiatric unit. In order to detect cases of Dual Diagnosis, we suggest optimize recording in clinical history substance use and systematic urine tests in all patients admitted, which would benefit from specific treatment for their condition.
Characterizing the profile of schizophrenic patients with high hospitalization rates seems relevant. The aim of this study is to describe characteristics of patients with schizophrenia hospitalized at Acute Care Units, and identify clinical profiles associated to relapse.
Observational retrospective study (case-control). Hospitalized patients diagnosed for schizophrenia or schizoaffective disorder for more than 2 years. Data related to the previous 3 years and current hospitalization were recorded: sociodemographics, diagnosis, CGI, reason for current/previous hospitalizations, life events, drug abuse, therapy prior and during hospitalization and compliance.
Preliminary results from 1607 patients are presented: cases are patients with no hospitalization (No-HOSP) in the previous 3 years (N=508); controls are those who had some hospitalization (HOSP) during that period (N=1099). HOSP patients were significantly younger than No-HOSP (p<0.0001). 41% of HOSP and 28.4% of No-HOSP patients showed No-Low family support (p<0.0001). 55.9% of HOSP and 50.2% of No-HOSP patients showed some drug abuse close to current hospitalization (p<0.05). The most frequent factor for current hospitalization was relapse due to non-compliance in both HOSP (66.2%) and No-HOSP (59.4%; p=0.0092). Through artificial intelligence methods, fourteen variables are identified as related to relapse (Number of previous antipsychotics, Time of evolution, CGI, Age, Gender, Educational Level, Family support, Compliance, Heroine, Cocaine or Cannabis abuse, Stressing events, Diagnosis, Number of previous hospitalizations), which have permitted to develop a predictive model for relapse (PRECOG Project).
The main factor for hospitalization was non-compliance. Age, family support, drug abuse seem to be also related to hospitalization.
Fiction films offer unexplored support for rehabilitation in patients with schizophrenia and other psychoses. Schizophrenia produces deficits and distortions in perception and understanding of reality, also expressed in the perception and comprehension of films. After two years of experience “ad hoc” we have designed an experimental case-control study in order to study the effectiveness of the proposed technique compared with conventional “cinema-forum”
20 patients treated at the Psychiatric Day Hospital in Puerta de Hierro Hospital (Majadahonda) will participate in the study. Initially, the researcher will collect information on socio-demographic and clinical data of all participants, as well as a written informed consent. There will be an initial assessment using the following instruments:
- SCIP (schizophrenia cognitive screening)
- Scale GEOPTE (social cognition in schizophrenia)
- Social Functioning Scale (SOFAS, PSP)
- Scale of disease awareness
- IPDE (TP)
- Hamilton Scale (anxiety-depression)
The material used will be the 12 chapters of the first season of TV series “The Sopranos” by David Chase (2004). Specific techniques of cognitive and affective work are compared against a “cinema-forum”. For the evaluation of the effectiveness of the proposed technique, it will be used a measurement tool designed specifically for the activity, which includes:
1. 60 item-Scale, specific on each chapter, evaluating:
Non-compliance is very common among patients with mental disorders, especially in schizophrenia. Non-compliance increases risk of relapse, hospitalizations, and suicide attempts, which worsens outcome. The aim of this study is to evaluate adherence to a new-onset therapeutic strategy in patients with schizophrenia, and the methods used to evaluate it. Differences between schizophrenia and other mental disorders will be assessed.
Epidemiological study in outpatients diagnosed for schizophrenia, bipolar disorder, depression or personality disorder in which a new therapeutic approach was started (pharmacological or non pharmacological). Retrospective information from the previous three months (sociodemographic and clinical characteristics, treatments, adherence) and prospective data (adherence) for the three months after new therapy start were collected.
Preliminary results from 975 patients with schizophrenia are presented. In 83% of patients with schizophrenia, adherence to pharmacological treatment was assessed through questions to the patient or some relative (caregiver o no direct caregiver), while in 10.5%, 12.6%, 17.3% and 23.7% it was assessed through MARS and DAI scales, MEMS, tablets account, and injections delivery. When patient was asked about his compliance with pharmacological treatment, 48% stated optimal compliance (>80% of doses prescribed), while this percentage is reduced to 44%, 38.5% and 35% when more objective methods were used (tablets account, MARS scale or MEMS, respectively). Compliance rose to 80% in patients treated with long-acting injectable antipsychotics.
Less of 50% of patients with schizophrenia show optimal compliance to oral pharmacological treatment, while this rate is 80% among those treated with long-acting injectable antipsychotics.
La reconnaissance des expressions faciales chez la personne polyhandicapée est un élément crucial dans la compréhension de son ressenti émotionnel. Nous proposons d’élaborer une Échelle du Ressenti Émotionnel de l’Enfant Polyhandicapé (EREEP) à l’aide de l’enregistrement filmé des expressions faciales permettant d’évaluer le ressenti émotionnel subjectif. Nous faisons l’hypothèse que le ressenti émotionnel « réel » de l’enfant polyhandicapé est en divergence avec les estimations qu’en fait l’entourage.
Nous avons mené une recherche dans un externat médico-pédagogique auprès de sept enfants polyhandicapés âgés de 6 à 13 ans. Après avoir filmé ces enfants dans des situations écologiques variées, nous avons élaboré pour chaque enfant une EREEP incluant l’ensemble des expressions faciales identifiées dans les films. Cette échelle consiste en un graphe incluant entre huit et dix expressions faciales qui ont été côtées par neuf juges afin d’identifier la valence émotionnelle (–5 négative ; +5 positive), l’intensité (0 faible ; 5 forte) et l’identifiant (inquiétude, joie, etc.). Ces EREEP ont ensuite été utilisées afin d’évaluer le ressenti émotionnel « réel » des enfants au cours de trois activités ciblées et de le comparer aux estimations des éducateurs sur le ressenti émotionnel des enfants.
Nos résultats montrent qu’il est possible d’élaborer une EREEP reflétant l’ensemble des expressions faciales des enfants. Ils montrent également que les éducateurs ont tendance à surestimer la valence émotionnelle des enfants lors des activités plaisantes.
Psychotic symptoms in depression are indicators of severity and poor prognosis. It usually requires psychopharmacotherapy with antidepressants and antipsychotic agents and it may even require electroconvulsive therapy (ECT).
To review the indications of ECT in major depression through the study of a clinical case of a patient admitted in an indoor psychiatric unit.
A 64-year-old woman diagnosed as bipolar affective disorder 20 years ago. Her first manic episode required hospitalization. Afterwards, she remained clinically stable for 18 years with pharmacotherapy with lithium. Lately she was admitted due to a major depressive episode with psychotic features (injury delusions, ruin and catastrophe). Antidepressant and antipsychotic treatment was added, improving her symptoms. However, she had to be readmitted two months later with severe psychotic symptoms that did not improve with pharmacological treatment. ECT was added to her treatment. She improved after a few sessions. During the last years, she has presented depressive episodes with psychotic symptoms at least once a year, and all of them have required ECT.
ECT is an alternative to pharmacological therapy in depression with psychotic symptoms in patients with no response to drugs. According to studies and clinical practice, ETC has been effective as we see in this case. Therefore, ECT is a technique to consider in major depression, not only in patients who do not respond to drug therapy but also in those who do not tolerate psychopharmacological, who suffer from severe or psychotic symptoms, suicide thoughts or those, psychomotor agitation or stupor.
Obsessive compulsive disorder (OCD) in childhood was first described by Legrand du Saulle in late XIX century, however, a systematic study in pediatric population was not made until 1986, by Rapoport. It is has been documented in scientific literature that younger patients usually hide their symptoms because of shame or that they do not find their obsessions and compulsions excessive, so that they feel them in an egosyntonic way, delaying diagnosis until several years after their first symptoms.
Aims and methodology
To highlight the specific symptoms in Pediatric OCD and review its treatment and approach through the study of a case report.
A 11-year-old boy was referred by his paediatrician to a child mental outpatient service for behavioural disturbances in the last few months. For the last three years, he had been performing rituals of cleaning, order and checking, increasingly complex and with a significant impact on his life, to the point of not being able to go to school and have other members of his family involved. He also had religious and catastrophic obsessions that generated him important distress. He was treated with high doses of sertraline and low doses of risperidone, and cognitive-behavioral psychotherapy with exposure response prevention and training in relaxation techniques were associated to the treatment. The patient improved partially.
This case illustrates the delay in the diagnosis of Pediatric OCD itself as well as the complexity when treating this disorder.
There is a growing interest in establishing a relationship between several mental disorders and traumatic life events in childhood and adolescence.
It has been seen a high prevalence of these traumatic events when reviewing the clinical history of patients with mental illness.
Measuring the prevalence of traumatic events in a sample of patients with a diagnosis of psychotic disorder.
A retrospective descriptive study was made. The sample comprised 50 patients admitted to our psychiatric inpatient unit. These patients were separated into different categories according to clinical diagnosis and demographic variables. Data was obtained through clinical interview before their hospital discharge. We tried to detect the presence or absence of real or imaginary memories of traumatic events during their childhood or adolescence.
52% of patients had a diagnosis of paranoid schizophrenia. 64% reported a history of substance abuse in their family. 20% referred the experience of having suffered sexual abuse by a member of their family, and up to 44% of them by someone other than family. 22% reported having suffered some kind of physical abuse by their parents, and more than 70% reported having suffered some type of traumatic event in the school environment.
There is an important amount of traumatic events in childhood and adolescence in this sample of patients. However, concluding that such traumatic events could eventually produce severe psychiatric disorders is still quite controversial. In order to understand better the association between childhood trauma and severe mental illnesses more research is needed.
Late-onset psychoses are a heterogeneous group of disorders whose nosology has been controversial throughout history. Several methodological limitations have made difficult the comparison among studies and, as a consequence, the research interest has been little, leading to the absence of late-onset schizophrenia and paraphrenia in current official classifications.
Aims and methodology
To highlight the specific symptoms of late-onset schizophrenia as well as its differences with other psychoses though the study of a case report.
A 70-year-old woman developed psychotic symptoms during the last seven years, consisting of auditory and olfactory hallucinations, telepathic phenomena and injury delusions, erotomania and thought control, with a high level of systematization and fantasy. She was admitted in an inpatient unit. She was treated with risperidone and the psychotic symptoms got better. At the time of hospital discharge, hallucinations and delusional thoughts had disappeared and no behavioral or emotional disorder was observed. Some weeks later, risperidone had to be substituted by paliperidone due to side effects, such as tremor, sialorrhea and parkinsonism.
Late-onset schizophrenic psychosis is not as exceptional as it has been traditionally considered. One of the main problems is that current classifications do not include specific diagnostic categories for cases of late or very-late-onset psychoses. It would be necessary that future ICD-11 and DSM-V classifications will include different-age criteria when diagnosing mental disorders.