Development and reprotuction of Spodoptera eridania on natural hosts and artificial diet

The development and reproductive potential of Spodoptera eridania (Stoll, 1782) (Lepidoptera, Noctuidae) was compared on natural and artificial diets. Its biology was determined under laboratory conditions, providing an artificial diet, leaves of white clover and the peach cultivar 'Chimarrita' and fruits and leaves of the apple cultivar 'Gala'. Larvae of S. eridania could not complete their biological cycle when fed on apple fruits or peach leaves. The artificial diet provided the shortest development time, with a cycle of 28.5±0.14 days from egg to adult and 37.3% total viability. Apple leaves led to a longer development time from egg to adult (62.8±1.22 days) and lower total viability (23%) and white clover provided the highest total viability (54.3%). The results showed that S. eridania can use white clover and apple leaves to develop normally in apple orchards. The reduction of food sources such as white clover used by the larvae results in infestation and damage to fruits from "test bites".

Evaluación de la calidad de las paletas curados de diferentes líneas genéticas de cerdos Ibéricos

En este trabajo se estudió la calidad comparativa de las paletas curados de diferentes líneas genéticas: Retinto x Entrepelado RxT (n = 6), TxT Torbiscal (n = 6), Entrepelado ExE (n = 10), Retinto RxR (n = 6) Y Entrepelado x Torbiscal TxE/ExT (n = 8). Las paletas curadas se evaluaron con el método EVACAL, un método original del SiPA. Este método incluye análisis físico-químicos (humedad, grasa intramuscular, proteínas, NaCl, mioglobina, perfil de ácidos grasos, compuestos volátiles y oxidación de lípidos), análisis instrumental (color instrumental, pH y textura) y análisis sensorial. Los resultados obtenidos revelaron que el lote RxR muestra una relación más alta en oleico / estérico y MUFA/SAT, que se relaciona con una alta calidad. Esto se confirmó en el análisis sensorial con altas puntuaciones de fluidez grasa y brillo del magro. El lote TxE/ExT se caracteriza por presentar unos valores elevados de mioglobina que producen grandes cantidades de compuestos volátiles a partir de aminoácidos (2-metilbutanal y 3-metilbutanal). Esto hecho se mostró en los resultados del análisis sensorial con una mayor persistencia de sabor y mayor jugosidad en comparación con los otros lotes. Por otra parte, el lote RxE revela una gran cantidad de grasa intramuscular y mayores puntuaciones en atributos sensoriales en cuanto a la apariencia (fluidez grasa), textura (jugosidad) e intensidad de olor en comparación con los otros lotes. Podemos concluir que existen tres líneas genéticas que pueden producir productos de alta calidad. La conveniencia de utilizar uno de estos depende de otros aspectos como la prolificidad.

Independent Component Analysis and Neural Networks Applied for Classification of Malignant, Benign and Normal Tissue in Digital Mammography

Objectives : This paper proposes an efficient method for the discrimination and classification of mammograms with benign, malignant and normal tissues.

Methods : The proposed method consists of selection of tissues, feature extraction using independent component analysis, feature selection by the foiward- selection technique and classification of the tissue by the multilayer perceptron.

Results : The method is tested for a mammogram set of the MIAS database, resulting in a 97.83% success rate, with 98.0% specificity and 97.5% sensitivity.

Conclusion : The proposed method showed a good classification rate. The method will be useful for early cancer diagnosis.

1 μs broadband frequency sweeping reflectometry for plasma density and fluctuation profile measurements

Frequency swept reflectometry has reached the symbolic value of 1 μs sweeping time; this performance has been made possible, thanks to an improved control of the ramp voltage driving the frequency source. In parallel, the memory depth of the acquisition system has been upgraded and can provide up to 200 000 signals during a plasma discharge. Additional improvements regarding the trigger delay determination of the acquisition and the voltage ramp linearity required by this ultra-fast technique have been set. While this diagnostic is traditionally dedicated to the plasma electron density profile measurement, such a fast sweeping rate can provide the study of fast plasma events and turbulence with unprecedented time and radial resolution from the edge to the core. Experimental results obtained on ASDEX Upgrade plasmas are presented to demonstrate the performances of the diagnostic.

The endocannabinoid system expression in the female reproductive tract is modulated by estrogen

The endocannabinoid system (ECS) is involved in several physiological events that resulted in a growing interest in its modulation. Moreover, the uterine levels of anandamide (AEA), the major endocannabinoid, must be tightly regulated to create proper embryo implantation conditions. However, there are no evidences about the regulation of AEA in uterus by estrogen. Thus, the aim of this study is to elucidate whether estradiol benzoate (EB) and tamoxifen (TAM) administration to ovariectomized (OVX) rats can induce changes in the expression of cannabinoid receptors and AEA-metabolic enzymes in uterus by evaluating gene transcription and protein levels by qPCR, Western blot and immunohistochemistry. Moreover, the plasmatic and uterine levels of AEA and of prostaglandin E₂ (PGE₂) and prostaglandin F₂α (PGF_2α), the major cyclooxygenase-2 (COX-2) products, were determined by UPLC-MS/MS. The immunohistochemistry showed that cannabinoid receptors, as well as AEA-metabolic enzymes are mainly located in the epithelial cells of both lumen and glands and, to a lesser extent, in the muscle cells. Moreover, EB administration to OVX rats significantly increased CB1, CB2, NAPE-PLD, FAAH and COX-2 expression and transcription. These effects were absent in TAM and TAM+EB treatments showing that this response is estrogen receptor dependent. Additionally, although uterine levels of AEA remained unchanged in EB or TAM treated animals, they showed a rise with EB treatment in plasma. The latter also produced a decrease in uterine PGE₂ levels. In summary, these data collectively indicate that the expression of ECS components, as well as, the AEA and PGE₂ levels in rat uterus is modulated by EB. Thus, estradiol may have a direct regulatory role in the modulation of ECS in female reproductive tissues.

Biodegradation of airborne acetone/styrene mixtures in a bubble column reactor

The ability of a bubble column reactor (BCR) to biodegrade a mixture of styrene and acetone vapors was evaluated to determine the factors limiting the process efficiency, with a particular emphasis on the presence of degradation intermediates and oxygen levels. The results obtained under varied loadings and ratios were matched with the dissolved oxygen levels and kinetics of oxygen mass transfer, which was assessed by determination of k_La coefficients. A 1.5-L laboratory-scale BCR was operated under a constant air flow of 1.0 L.min^-1, using a defined mixed microbial population as a biocatalyst. Maximum values of elimination capacities/maximum overall specific degradation rates of 75.5 gC.m^-3.h^-1/0.197 gC.gdw^-1.h^-1, 66.0 gC.m^-3.h^-1/0.059 gC.gdw^-1.h^-1, and 45.8 gC.m^-3.h^-1/0.027 gC.gdw^-1.h^-1 were observed for styrene/acetone 2:1, styrene-rich and acetone-rich mixtures, respectively, indicating significant substrate interactions and rate limitation by biological factors. The BCR removed both acetone and styrene near-quantitatively up to a relatively high organic load of 50 g.m^-3.h^-1. From this point, the removal efficiencies declined under increasing loading rates, accompanied by a significant drop in the dissolved oxygen concentration, showing a process transition to oxygen-limited conditions. However, the relatively efficient pollutant removal from air continued, due to significant oxygen mass transfer, up to a threshold loading rate when the accumulation of acetone and degradation intermediates in the aqueous medium became significant. These observations demonstrate that oxygen availability is the limiting factor for efficient pollutant degradation and that accumulation of intermediates may serve as an indicator of oxygen limitation. Microbial (activated sludge) analyses revealed the presence of amoebae and active nematodes that were not affected by variations in operational conditions.

Inhalation injury in a burn unit: a retrospective review of prognostic factors

Inhalation injury (InI) is known to seriously affect the prognosis of burn patients, as it is strongly associated with high morbidity and mortality. Despite major advances in the treatment of burn patients in the past years, advances in the treatment of smoke InI have been somewhat limited; mortality reduction mostly results from improvements in critical care. It is difficult to separate the contribution of InI from other mechanisms that also affect respiratory tract and lungs. The aim of this study was to compare patients with and without InI and to identify prognostic factors among patients with smoke InI. Patients with InI displayed higher total body surface area (TBSA) burned, higher incidence of pneumonia and acute respiratory distress syndrome (ARDS), a higher rate of positive blood cultures and a significantly higher death rate. We could conclude that older age, higher TBSA, ARDS and pneumonia were independent predictive factors for mortality in our global study population. Older age and higher TBSA were the only independent factors found to be predictive of mortality in patients with InI.

Depression and multiple sclerosis–pathophysiological links: From biology to treatment

Introduction

Depressive disorders (DD) are the second cause of disability worldwide. DD affect predominantly working age individuals, recurring in 75% of cases. DD pathophysiology is intricate and multi-factorial. Several inflammatory diseases have been linked to mood disorders. Amidst these conditions is multiple sclerosis (MS), a chronic inflammatory disease of the central nervous system, characterized by frequent exacerbations and progressive functional loss.

Objective

To review the current knowledge on DD and MS as comorbidities and the underlying pathophysiologic mechanisms.

Methods

We performed a bibliographic search in Pubmed–publications released in the last 5 years, written in English, Portuguese and Spanish, containing the keywords depression, inflammatory disorders, multiple sclerosis.

Results

The inflammatory hypothesis of depression provides a strong foundation to explain its close link with multiple sclerosis. The incidence and prevalence of DD is significantly higher in MS, especially in men. Functional imaging studies have shown that depressive symptoms are closely linked to the extension of inflammatory lesions, especially on the frontal and parietal regions, with particular emphasis to those affecting the grey matter. On the one hand, the clinical course and response to treatment of MS may be hindered by DD; on the other hand, the evolution of MS lesions leads to fluctuations in mood, with significant improvement of DD with successful MS treatment, independently of physical improvement.

Conclusions

There appears to be a biological link between DD and MS, with a bidirectional interference in the clinical course, prognosis and treatment response. Thus, both conditions must be correctly identified and treated.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Quality of life related to the health and socio-economic resources of the elderly

Introduction

Aging is a very heterogeneous and dissimilar process, full of asymmetries. There is evidence that socio-economic differences determine disadvantages and inequalities in old ages. Older people face particular inequalities in healthiness especially with more complex and vulnerable long-term conditions, being more likely to need support from social care services.

Aim

To evaluate the quality of life (well-being) related to the health of the elderly according to socio-economic indicators.

Method

Cross-sectional quantitative study was performed. A total of 316 elderly people (M = 74.78; SD = 9.78 years of age) was interviewed with the Portuguese version of the EQ-5D-3L scale for health-related quality of life.

Results

The interaction between income and the type of residential follow-up (alone vs. accompanied) was not statistically significant [F (2.310) = .910, P < .407; Ƞp2 = .006]. Differences in health status index were statistically significant for income [F (2.310) = 5.518, P < .004; Ƞp2 = .034]. Post-hoc comparisons indicated that the mean score for those with insufficient income for their expenses (M = .39, SD = .27) was significantly different from those with income reaching their expenses (M = .50, SD = .25) as well as those with income covering their expenses sufficiently (M = .60, SD = .21). The main effect for the type of follow-up (alone vs. accompanied) did not reach statistical significance [F (2.310) = .224, P < .636, Ƞp2 = .672].

Conclusions

Income has an impact on health-related quality of life. Health in aging as a social phenomenon is not neutral to economic differences and is exposed to these structural disadvantages.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Complicated grief: Is there a place in psychiatry?

Introduction

Grief is as normal reactive to a significant personal loss. It is characterized by affective, cognitive, behavioural and physiological symptoms. The grieving process is usually divided in five different stages, but in most cases presents a benign course, with decreased suffering and better adaptation to the new context. However, when high levels of emotional suffering or disability persist over a long time period, it becomes a case of complicated grief (CG), which should be adequately addressed.

Objectives

To review the characteristics of CG, the evidence that supports it as an individual pathological entity, and its place in current classification systems.

Methods

We performed a bibliographic search in Pubmed and PsychInfo, of articles written in English, Portuguese and Spanish, containing the key words: grief, bereavement, psychiatry, classification.

Results

The main issue regarding grief is the degree to which it is reasonable to interfere with a usually benign process. Since DSM-III bereavement has been referred to as an adaptive reaction to an important loss, which should not be diagnosed as major depressive disorder or adjustment disorder. However, DSM-5 has stated persistent complex bereavement disorder as an independent entity. In fact, CG fulfils the general criteria of every psychiatric syndrome, namely regarding specific diagnosis criteria, differential diagnosis from depressive disorders and post-traumatic stress disorder, and improvement with adequate treatment.

Conclusion

It is important to correctly approach CG, since it presents with characteristic diagnosis features and much improvement may be achieved once adequate treatment is provided.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

15q11.2 CNV affects cognitive, structural and functional correlates of dyslexia and dyscalculia

Several copy number variants have been associated with neuropsychiatric disorders and these variants have been shown to also influence cognitive abilities in carriers unaffected by psychiatric disorders. Previously, we associated the 15q11.2(BP1-BP2) deletion with specific learning disabilities and a larger corpus callosum. Here we investigate, in a much larger sample, the effect of the 15q11.2(BP1-BP2) deletion on cognitive, structural and functional correlates of dyslexia and dyscalculia. We report that the deletion confers greatest risk of the combined phenotype of dyslexia and dyscalculia. We also show that the deletion associates with a smaller left fusiform gyrus. Moreover, tailored functional magnetic resonance imaging experiments using phonological lexical decision and multiplication verification tasks demonstrate altered activation in the left fusiform and the left angular gyri in carriers. Thus, by using convergent evidence from neuropsychological testing, and structural and functional neuroimaging, we show that the 15q11.2(BP1-BP2) deletion affects cognitive, structural and functional correlates of both dyslexia and dyscalculia.

Psychosis and/or Lyme disease: There is more than meets the eye

Introduction

Lyme disease (LD) caused by the spirochete Borrelia burgdorferi (Bb) results from human contact with rural environments and is transmitted by infected ticks (Ixodes spp.)

Objectives/aims

To report a case with LD and to highlight the importance of differential diagnosis in a first psychotic episode.

Methods

Case report and systematic review of the literature.

Results

We report a case of a 19-year-old man that was admitted because of strange behaviour with alienation, perplexity and persecutory delusions. He had one previous admission to an inpatient unit two years prior and was diagnosed with psychosis not otherwise specified. After being admitted to the psychiatric ward a medical work up was completed. The patient had had a long stay in a rural environment; so anti-body specific to Bb was ordered and came positive. LD was diagnosed based on cerebral magnetic resonance imaging (MRI) findings and the presence of Bb in the cerebrospinal fluid. During treatment with anti-psychotic and antibiotic there was a noticeable clinical amelioration correlated with improvement of MRI's perfusion patterns.

Conclusions

LD is relatively rare, but physicians need to be aware of typical neuropsychiatric symptoms, given that they may occur months to years after the initial infection. Prompt diagnosis and effective treatment are crucial to avoid the possibly irreversible mental illness. In the evaluation of a first psychotic episode LD should be considered and excluded, principally if there's an epidemiological context and no psychiatric family history. MRI may be another useful asset in the diagnostic evaluation of this condition.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Mitochondrial Functionality and Chemical Compound Action on Sperm Function

During the last decade, several studies have shown that mitochondrial parameters, such as integrity, respiratory activity, membrane potential and ROS production are intimately linked with sperm quality. Given the limitations of conventional semen analyses in terms of predicting male fertility, an increasing number of studies are focusing on the characterization of sperm mitochondria in order to more accurately assess sperm functionality. Moreover, mitochondria from several organs, such as the liver, have been described as a powerful screening tool for drug safety, being an easy in vitro model to assess the toxicity of distinct families of compounds. Given that mitochondrial functionality is intimately related to sperm homeostasis, it has become important to understand how compounds, ranging from dietary supplements, environmental pollutants, dependency-inducing drugs to pharmacological agents (such as erectile dysfunction-targeted drugs and male contraceptives) affect sperm mitochondrial function. In this review, we discuss studies describing the effects of various chemical agents on spermatozoa, with particular emphasis on mitochondrial function. From the extensive literature analyzed, we conclude that in some cases the role of sperm mitochondria as putative predictors of sperm functionality is very obvious, while in others further studies are needed to clarify this issue.