Anaphylaxis to beta-lactam antibiotics at pediatric age: Six-year survey

INTRODUCTION

Beta-lactams are the most frequently used antibiotics in pediatric age. Anaphylactic reactions may occur and need to be properly studied, but studies in children are scarce.

OBJECTIVE

Characterization of case reports of anaphylaxis in children referred to an allergy department with suspected beta-lactams hypersensitivity.

MATERIALS AND METHODS

Retrospective analysis of all children referred to our Drug Allergy Center with suspected beta-lactams hypersensitivity between January 2011 and December 2016. Description of the drug allergy work-up performed studied according to standardized diagnostic procedures of ENDA/EAACI, including specific-IgE assay, skin prick and intradermal tests and diagnostic/alternative drug challenge tests.

RESULTS

146 children with suspected beta-lactams hypersensitivity were studied, and in 21 (14.4%) the diagnosis was confirmed. In all of them, except for three children, an alternative beta-lactam was found. In seven children (33.3% of those with confirmed beta-lactams hypersensitivity) anaphylaxis was confirmed, and all of them described reactions with cutaneous and respiratory or gastrointestinal involvement. The culprit drug was amoxicillin in six and flucloxacillin in one. In this sample, we also performed oral challenge with cefuroxime, being negative in all cases. Almost all cases of confirmed anaphylaxis (six from seven cases) were IgE mediated, with positive skin tests despite negative serum specific-IgE.

CONCLUSIONS

Allergic reactions to beta-lactams, although rare in children, require a detailed clinical history and a specialized drug allergy work-up to allow a correct diagnosis as well as to avoid the possibility of a potential life-threatening reaction and provide alternative drugs.

Pectoral nerve block as a single anesthetic technique for breast surgery and sentinel lymph node investigation

Breast cancer surgery is usually performed under general anesthesia or, more recently, combined with conventional regional techniques. Pectoral nerves (PECs) block appears as an analgesic alternative in these procedures, but few studies refer to it as a single anesthetic technique^1-3. In this case report, we describe a 56-year-old female patient, BMI 31kg/m², ASA IV, admitted for elective tumorectomy of the left upper quadrant of the breast and sentinel node investigation. Given the multiple comorbidities and the high anesthetic and surgical risk, the anaesthetic plan consisted in ultrasound guided PECs II block as a single anesthetic technique. The authors report a successful anesthetic and pain management without complications in breast surgery. PECs block, as a single anesthetic technique, may be safe, advantageous and effective with haemodynamic stability and few side effects in high risk cardiac patients.

Quality of recovery after surgery for cancer treatment

INTRODUCTION

Assessment of quality of recovery is important as an end-point for outcome research. This study aims to determine the incidence and determinants of poor quality of recovery (PQR) after surgery in patients scheduled for curative neoplastic surgery.

MATERIALS AND METHODS

An observational prospective study was performed in consecutive patients undergoing surgery for cancer treatment. The Quality of Recovery 15 score (QoR-15) was applied on the day before surgery (T0) and 24h after (T1). PQR was defined for patients with a QoR-15 score lower than the mean QoR-15 score at T1 minus one standard deviation. Preoperative quality of life was assessed with EuroQol-5D. Frailty and disability were defined using Clinical Frailty Scale and World Health Organization Disability Assessment Schedule 2.0.

RESULTS

One hundred and thirty-eight patients were enrolled and 31 (15.9%) were identified as having PQR. At T0, patients with PQR presented lower scores on total QoR-15 (P=.03) and had more problems on EuroQol-5D in mobility (P=.014), self-care (P=.027) and usual activities domains (P=.019). The difference of QoR-15 score between T1 and T0 was higher in PQR patients (P<.001). PQR had more frequently Revised Cardiac Risk Index (RCRI)≥2 (P=.012) and were more frequently frail (P=.03). PQR patients stayed longer in the hospital (P=.034).

CONCLUSION

PQR patients had lower QoR-15 before surgery, poor quality of life, were more frequently frail and had high cardiac risk factors. PQR patients stayed longer in the hospital.

Conceptual and empirical advances in Neotropical biodiversity research

The unparalleled biodiversity found in the American tropics (the Neotropics) has attracted the attention of naturalists for centuries. Despite major advances in recent years in our understanding of the origin and diversification of many Neotropical taxa and biotic regions, many questions remain to be answered. Additional biological and geological data are still needed, as well as methodological advances that are capable of bridging these research fields. In this review, aimed primarily at advanced students and early-career scientists, we introduce the concept of "trans-disciplinary biogeography," which refers to the integration of data from multiple areas of research in biology (e.g., community ecology, phylogeography, systematics, historical biogeography) and Earth and the physical sciences (e.g., geology, climatology, palaeontology), as a means to reconstruct the giant puzzle of Neotropical biodiversity and evolution in space and time. We caution against extrapolating results derived from the study of one or a few taxa to convey general scenarios of Neotropical evolution and landscape formation. We urge more coordination and integration of data and ideas among disciplines, transcending their traditional boundaries, as a basis for advancing tomorrow's ground-breaking research. Our review highlights the great opportunities for studying the Neotropical biota to understand the evolution of life.

Abstract P4-02-09: Breast cancer and magnetic resonance imaging (MRI): Background parenchymal enhancement (BPE) predicting response to neoadjuvant chemotherapy (NAC)

Objective: To assess the association of MRI BPE and pathological response in women diagnosed with stage II/III breast cancer submitted to NAC. Methods: This observational and cross-sectional retrospective study was performed in consecutive women who underwent NAC and had MRI exams before and after chemotherapy. The MRI was done before and after 2 weeks of completing NAC. BPE was classified according to ACR-BIRADS 5th edition. The type of BPE before NAC, its changes and the relationship to total pathologic complete response (TpCR) were evaluated. Data were paired with patient age, size on MRI before and after NAC, features of clinical response according to the RECIST criteria, tumor grade and immunohistochemical (IHC) subtypes. MRI assessment included amount of fibroglandular tissue, symmetry of BPE and measurement of tumor at the longest diameter. All images were blinded reviewed by a radiologist. We used for the changes of the BPE the Bowker symmetry test or the McNemar test and to analyze the factors related to the clinical and pathologic responses, logistic regression analysis. The level of significance adopted was 5% (p&lt;0.05). Results: We studied 71 women between 2009 and 2016. The medium age was 37 years old. BPE was symmetrical in 68 women (95.8%). Moderate and marked BPE was present in 28 (39.4%) of the affected breasts and in 25 (34.2%) of the contralateral breasts. After NAC all BPE were symmetrical and just 3% of them were moderate or marked. Regarding the IHC subtype, 40 women (56.3%) were triple negative or HER2 positive, and these women had a higher frequency of TpCR (55% for each, compared to 12.9% in patients with luminal subtypes). We found to be independently associated with pCR: the reduction of BPE (in the affected or contralateral breast) and the molecular subtypes triple negative and HER2 positive

Table 1. Multivariate Analysis related to TpCR (n=71).VariableCategoryP-ValueO.R.*CI 95% O.R.*Tumor Size on MR pre-MAC (cm) 0.1710,8590.691-1.068Luminal subtypeLuminal B (ref.)---1.00--- Luminal A0.3120.450.10-2.11 HER2pos/ Luminal B HER20.0055.781.71-19.58 Triple negative0.0493.271.01-10.64Age (years) 0.3870.9820.942-1.023Nottingham grade1 (ref.)---1.00--- 20.0817.830.78-79.16 30.0967.100.71-71.31BPE pre-NAC (S or A)Asymmetric (ref.)---1.00--- Symmetric0.3273.030.33-27.76BPE pre-NAC affected breastMinimal (ref.)---1.00--- Mild0.8120.860.24-3.09 Moderate0.3711.890.47-7.64 Marked0.5911.570.30-8.17BPE pre-NAC contralateral breastMinimal (ref.)---1.00--- Mild0.7130.790.22-2.81 Moderate0.2502.330.55-9.77 Marked0.4701.880.34-10.43BPE ChangeSame/increased (ref.)---1.00--- Reduction0.0263.011.14-7.96* OR (Odds Ratio) = Risk ratio to pCR; (n=26 pCR, n=7 DpCR, n=31 PR e n=7 ED, where Total pCR is pathological complete response (without invasive and DCIS in the breast and axilla) DpCR is pathological response with just DCIS, PR is partial response and ED is stable disease – we haven't progression disease). CI 95% OR = Confidence interval of 95% to risk ratio. Ref.: reference level. Proportional risk models.

Conclusion: BPE reduction was significantly associated with TpCR. Nevertheless, patterns of BPE pre-NAC have no association with pathological response.

Citation Format: Teixeira SRC, Camargo HSAd, Ramalho S, Natal R, Machado HdC, Camargo MMAd, Azevedo J, Arruda MdS, Negrão EMS, Almeida NR, Teixeira AL, Cabello V, Cabello C. Breast cancer and magnetic resonance imaging (MRI): Background parenchymal enhancement (BPE) predicting response to neoadjuvant chemotherapy (NAC) [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P4-02-09.

Modulation of hepatic glutathione transferases isoenzymes in three bivalve species exposed to purified microcystin-LR and Microcystis extracts

This study compares the role of hepatic cytosolic glutathione transferases (cGST) isoforms of three different bivalve species to a Microcystis aeruginosa extract and purified MC-LR exposure (both at 150 μg MC-LR L^-1) for 24 h. Characterization and alterations of the cytosolic GST activities in Mytilus galloprovincialis, Ruditapes philippinarum and Corbicula fluminea were measured using four class-specific substrates and changes in individual GST isoforms expression were achieved by a subsequent two-dimensional electrophoresis analysis. Evaluation of cGST activity basal levels using the four class-specific substrates denoted quantitative differences between the three bivalves. Purified MC-LR did not induce any significant response from bivalves. On the other hand, cell extracts caused significant alterations according to bivalves and substrates. Among the three bivalves, only R. philippinarum showed a significant induction of cGST activity using generic 1-chloro-2,4-dinitrobenzene (CDNB) substrate. However, no significant alterations were detected in these clams by cell extracts using the other specific substrates. In contrast, C. fluminea revealed significant induction of cGST activity when using 3,4-dichloronitrobenzene (DCNB) and ethacrynic acid (EA). In M. galloprovincialis, cell extracts promoted a significant decrease of cGST activity when using EA substrate. Altered protein expression was quantitatively detected upon exposure to cell extracts for one spot in R. philippinarum and another for C. fluminea, both upregulated (2.0 and 8.5-fold, respectively) and identified as a sigma1-class GST in the case of the first. The results showed that the three bivalves presented specific adaptive biotransformation responses to MCs and other cyanobacteria compounds supported by the modulation of distinct cGST classes.

Confirmatory factor analysis of the perinatal depression screening scale-24

Introduction

Pereira et al. (2013) adapted to the antenatal period and validated a shorter version of the original 35-items Postpartum Depression Screening Scale (PDSS [1]), composed of 24 items, selected from the exploratory factor analysis matrix. In their study, the researchers considered this version a useful alternative to evaluate depressive symptoms in pregnancy, taking into account its reliability, concurrent validity and satisfactory combinations of sensitivity and specificity to screen for antenatal depression.

Aim

To confirm the four dimensions’ structure of the PDSS-24 using confirmatory factor analysis.

Methods

616 women (mean age: 32.29 ± 4.466) in the second trimester of pregnancy (mean weeks of gestation = 17.13 ± 4.929), with uncomplicated pregnancies, completed the PDSS-24 while waiting for their routine prenatal consultation at local health medical centers.

Results

The 4-dimensional model of PDSS-24 presented good fit (χ2[242] = 893,275; RMSEA = 0.067, CFI = 0.934, TLI = 0.94, PGFI = 0.717; P<.001). The PDSS-24 Cronbach's alpha was α=0.90; all factors presented good/excellent reliability: Derealization and failure (a = 0.87); Concentration difficulties and anxiety (a = 0.81), Suicidal ideation (a = 0.94), and sleeping difficulties (a = 0.89).

Conclusion

This further validation study emphasizes that PDSS-24 in an adequate measure of antenatal depressive symptoms. To better distinguish it from the version to use in the postpartum (PDSS-21 [2]), from now on, we will denominate it perinatal depression screening scale-24.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Confirmatory Factor Analysis of NEO-FFI-20 in a Portuguese Sample

Introduction

The Five-Factor Model organizes human personality traits under a comprehensive framework of five dimensions–neuroticism, extraversion, openness to experience, agreeableness and conscientiousness. The dimensions are empirical generalizations of enduring differences in behavioural, emotional and cognitive patterns between individuals. The Portuguese version of the NEO-Five Factor Inventory (NEO-FFI-20) is increasingly used as it is the shortest version to evaluate the “Big 5”.

Objective

To investigate the reliability and the validity of the Portuguese version of NEO-FFI-20-item (Bertoquini & Pais Ribeiro) in a Portuguese sample, using exploratory and confirmatory factor analysis (EFA and CFA).

Methods

747 participants [417 (55.8%) women; mean age = 42.13 ± 12.349 years] answered an online survey which included the NEO-FFI-20 and socio-demographic questions. The total sample was randomly divided in two sub-samples (sample A, n = 373; sample B, n = 374). Sample A was used to EFA and sample B was used to CFA.

Results

The Portuguese version of NEO-FFI-20, excluding items 14 and 16, had an acceptable fit to the data (χ2/df = 2.28; TLI = .88; CFI = .90; RMSEA = .06; P = .059). The internal consistency analysis resulted in: Neuroticism, α = .68; Extraversion, α = .62; Openness to Experience, α = .74; Agreeableness, α = .70; and Conscientiousness, α = .74.

Conclusions

The NEO-FFI-20 can be used to reliably and validly evaluate the BIG FIVE in an ongoing research project on traffic psychology to better understand and respond to risky behaviours on the road.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Confirmatory Factor Analysis of the Frost et al Multidimensional Perfectionism Scale-24 (F-MPS 24)

Introduction

The F-Multidimensional Perfectionism Scale is a widely used instrument to assess perfectionism trait. The original scale comprises 35-items that measure the six dimensions of Frost et al (1990) conceptualization of perfectionism: personal standards (PS), concern over mistakes (CM), doubts about actions (DA), parental criticism (PC), Parental expectations (PE) and Organization (O).

Objective

To examine the factor structure of the 24-items short form of the F-MPS using confirmatory factor analysis (CFA), in a sample of Portuguese university students.

Methods

The sample comprises 344 university students (68.4% females), with an average age of 20.69 years (SD = 1.59; range = 17–24). They completed a version of F-MPS with 24 items that results from the selection of the four items with highest loadings in the respective six dimensions of the original Portuguese version (Amaral et al., 2013).

Results

After correlated errors, we obtained a good fit for the FMPS with six factors (X2/df = 2.125; CFI = .936; GFI = .891, RMSEA = .057; P[rmsea≤ .05] = .043). The 24-item F-MPS short form revealed good internal consistency (α = .825). The six dimensions showed acceptable or good internal consistency, as revealed by Cronbach's alpha (α: PS = .80; CM = .76; DA = .82; PC = .84; PE = .89, O = .85).

Conclusions

The F-MPS 24 items short form CFA confirmed the six factor model as a reliable and valid measure to assess multidimensional perfectionism in Portuguese university students.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Analysis of the use of microcystin-contaminated water in the growth and nutritional quality of the root-vegetable, Daucus carota

Toxic cyanobacterial blooms are often observed in freshwaters and may reflect the increased eutrophication of these environments and alterations in climate. Cyanotoxins, such as microcystins (MCs), are an effective threat to many life forms, ranging from plants to humans. Despite the research conducted to date on cyanotoxins, the risks associated to the use of contaminated water in agriculture require further elucidation. To tackle this aim, a research was conducted with the root-vegetable Daucus carota. The specific aims of this work were the following: (i) to evaluate the effects of MC-LR on the plant growth and photosynthesis; (ii) to evaluate the nutritional quality of carrot roots; and (iii) to measure bioaccumulation. To this purpose, young carrots were grown in soil during 1 month in natural conditions and exposed to Mycrocystis aeruginosa aqueous extracts containing environmentally realistic concentrations of MC-LR (10 and 50 MC-LR μg/L). The results showed that MC-LR may decrease root growth after 28 days of exposure to 50 μg/L and increase photosynthetic efficiency. We also observed changes in mineral and vitamin content in carrots as a result of the exposure to contaminated water. Moreover, MC-LR was detected in carrot roots by ELISA at very low concentration 5.23 ± 0.47 ng MC eq./g FW. The soil retained 52.7 % of the toxin potentially available for plants. This result could be attributed to MC-LR adsorption by soil particles or due to microbial degradation of the toxin. We conclude that the prolonged use of MC-LR-contaminated water may affect crop growth, alter the nutritional value of vegetable products, and potentiate contamination.

Detection of Treponema pallidum sp pallidum DNA in latent syphilis

In this study, polymerase chain reaction (PCR) techniques were used to detect Treponema pallidum DNA in samples from patients with latent syphilis. Sixty-nine patients with latent syphilis and 18 with treated syphilis were included. Whole blood, plasma, sera and ear scrapings, totalling 235 samples from patients with latent syphilis, were obtained. Three PCR assays (47-PCR, polA-PCR and M-PCR assays) were performed. The 47-PCR yielded the highest number of positive samples –92/235 (39.1%), followed by M-PCR –90/235 (38.3%) and polA-PCR –73/235 (31.1%). Ear scrapings presented the highest number of positives (47/84 –56%), followed by plasma samples (36/84 –42.9%), whole blood (32/84 –38.1%) and sera (21/84 –25%). In conclusion, we have confirmed that T. pallidum can be found in blood of patients with latent syphilis. The 47-PCR technique was found to be the most sensitive, whereas ear lobe scrapings seem to be the best specimen for detection of T. pallidum DNA in latent syphilis.

Mindfulness, Self-compassion And Depressive Symptoms In Pregnant Women

Introduction

Depressive symptoms in pregnancy are risk factors for postpartum depression and associated to adverse child outcomes (Glover, 2014). Depressive symptoms decreases after participation in mindfulness and self-compassion based interventions for pregnant women (e.g. Goodman et al., 2014). However, apart from intervention trials, there are not studies on the relationship between mindfulness, self-compassion and depressive symptoms in pregnancy (Zoeterman, 2014).

Objective

To explore the association between mindfulness, self-compassion and depressive symptoms in pregnant women.

Methods

Four hundred and twenty-seven pregnant women (mean age: 32.56 ± 4.785 years) in their second trimester of pregnancy completed a set of self-report questionnaires validated for pregnancy: Facets of Mindfulness Questionnaire-10 ([FMQ-10]; Azevedo et al., 2015; to evaluate Nonjudging of experience/NJ, acting with awareness (AA) and observing and describing (OD), Self-Compassion Scale ([SCS]; Bento et al., 2015; to evaluate self-kindness, self-judgment, common humanity [CH], isolation, mindfulness and over-identification [OD]) and Postpartum Depression Screening Scale-24 (PDSS-24; Pereira et al., 2013). Only variables significantly correlated with the outcomes were entered in the multiple regression models.

Results

FMQ-10 and SCS Total scores were both significant predictors of PDSS-24 (B = –0.294,–0.272). Derealization and failure predictors were NJ and Isolation (B = –0.234; 0.384); Suicidal ideation predictor was NJ, OD and isolation (B = –0.152;–0.115; 0.334); concentration difficulties and anxiety predictors were isolation and CH (B = 0.296;–0.201); Sleep difficulties predictors were AA and isolation (B = –0.199; 0.248) (all P < 0.05).

Conclusions

Mindfulness and self-Ccompassion dimensions, particularly nonjudging of experience, acting with awareness, observing and describing are protective correlates of antenatal depressive symptoms. Isolation is a correlate of PD in pregnancy.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Validation of the insomnia assessment scale – adapted in a community sample of portuguese pregnant women

Introduction

Pregnancy is characterized by important changes in sleep and some of them (as insomnia) predict negative outcomes, like depression, through all the perinatal period. There are few Portuguese adapted and validated instruments assessing insomnia in pregnancy.

Objective

To validate the Insomnia Assessment Scale in a sample of Portuguese pregnant women.

Methods

419 pregnant women (mean age: 32.51 ± 4.759; weeks of gestation: 17.32 ± 4.803) answered the Insomnia Assessment Scale (IAS), constructed according to the DSM-V and the ICSD-3 criteria and presenting fourteen items: three evaluating insomnia symptoms (1 to 3); one assessing if sleep difficulties were present although there were adequate conditions to sleep (item 4); one assessing if sleep difficulties occurred three times/week (item 5); one evaluating if sleep was not restorative (item 6); three assessing daily impairment associated to insomnia symptoms (7 to 9); two assessing the use of prescribed and/or homemade medication (10 and 11); three excluding that sleep difficulties were not due to another sleep disorder, substance use, a physical condition or a mental disorder) (12 to 14).

Results

The IAS Kuder-Richardson alpha was very good (α=0.85) and none of the items increased the alpha if removed. A principal component analysis revealed a three factors solution, explaining a variance/EV of 63,74%: F1/Insomnia symptoms (items 1 to 6) (EV 36.02%; α=0.81); F2/Daily impairment associated to insomnia symptoms (items 7 to 9) (EV 18.67%; α=0.79); F3/Differential diagnosis (items 12 to 14) (EV 8.38%; α=0.81).

Conclusions

The IAS adapted for Portuguese pregnant women presented good reliability and validity.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

The role of self-compassion in lifetime history of depression: A study in Portuguese pregnant women

Introduction

Although self-compassion has been pointed as an effective strategy for coping with depression, there are not any studies investigating its association with lifetime history of depression (LTHD).

Objective

To compare self-compassion levels in pregnant women with vs. without LTHD and to analyze if self-compassion dimensions are significant predictors of LTHD.

Methods

Four hundred and twenty-seven pregnant women with a mean age of 33 years (±4.785) in their second trimester of pregnancy completed the Self Compassion Scale validated for pregnancy (SCS; Bento et al., 2015) and a new self-report questionnaire to evaluate the presence of LTHD according to DSM-5 criteria for depression.

Results

Ninety-seven (23.0%) women had LTHD. Bisserial Spearmen correlations between LTHD and SCS total score were significant, negative and moderate (r = –0.31). SCS subscales, except Common Humanity, showed significant correlations: Self-Kindness/SK (r = –0.130), self-judgement (SJ) (0.313), isolation (0.357), mindfulness (r = –0.102), over-identification (OI) (r = 0.393). Independent sample t tests revealed that women with vs. without LTHD had significantly lower levels of total SCS, SK and Mindfulness scores and higher levels of SJ, Isolation and OI.Logistic regression (assumptions were fulfilled, Tabachnick and Fidell, 2007) showed that the SCS explained 26.7%–43.6% of the LTHD variance and correctly classified 86.9%; the odds ratio (OR) was.865 (95% CI 0.834–0.898; P < 0.001). The model composed by the correlated dimensions explained 15.9%–24.0% and correctly classified 80.6%. Odds ratios: SK = 0.017; SJ = 0.021; isolation = 16.027; mindfulness = 0.167 and OI = 20.178 (all P < 0.05).

Conclusions

Self-compassion, specifically the ability to treat oneself with care and understanding and to be aware and accepting one's present-moment experiences, decrease the probability of having LTHD.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

The role of mindfulness in lifetime history of depression: A study in Portuguese pregnant women

Introduction

Despite the empirical support for the effects of mindfulness based interventions for recurrent depression (Velden et al., 2015), the literature on the relation between Mindfulness and Lifetime History of Depression/LTHD are scarce.

Objective

To compare Mindfulness levels between women with vs. without LTHD and to analyze if mindfulness dimensions are significant predictors of LTHD.

Methods

One hundred and twenty-seven pregnant women (mean age: 32.56 ± 4.785 years) in their second trimester of pregnancy (17.34 ± 4.790 weeks of gestation) completed: Facets of Mindfulness Questionnaire-10 (FMQ10; Azevedo et at. 2015) assessing the dimensions non-judgement of inner experience/NJ, ACt with awareness/AA and observe and describe/OD; a new self-report questionnaire developed to evaluate the presence of LTHD, with several “Yes/No” questions, based on DSM-5 criteria for depression.

Results

Ninety-seven (23.0%) women had LTHD. Bisserial Spearmen correlations between LTHD and FMQ scores were significant, negative and moderate (> .30, P < .01); only OD did not significantly correlated with LTHD. Independent sample T-test revealed that women with vs. without LTHD had significantly higher levels of total FMQ-10, NJ and AA (all P < .001). Logistic regression analysis showed that the model containing FMQ-10 explained 12.7–18.8% of the LTHD variance and correctly classified 77.9%; the OR was of 1.19 (95% CI .801–.886; Wald = 44.504; P < .001). The model composed by NJ and AA explained 15.5–23% and correctly classified 76.5%. NJ OR was of 1.23 (CI .734–.884; Wald = 20.806; P < .001) and AA OR was of 1.41 (CI .708–.903; Wald = 13.004; P < .001).

Conclusions

Our research discloses that less mindfulness abilities enhances the probability of having lifetime history of depression.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Effects of the naturally-occurring contaminant microcystins on the Azolla filiculoides-Anabaena azollae symbiosis

Harmful algal blooms (HABs) contaminate aquatic ecosystems and are responsible for animal poisoning worldwide. We conducted a toxicity test with the aquatic fern and the biofertilizer, Azolla filiculoides. The sporophytes were exposed to three concentrations (0.01, 0.1 and 1μgmL(-1)) of a microcystin (MC) cyanobacterial crude extract and purified MC-LR. The growth of A. filiculoides decreased only at 1μgmL(-1) crude extract concentration while with MC-LR it decreased at all the tested concentrations, indicating that the presence of other compounds in the crude extract altered toxicity and stimulated the fern growth at lower concentrations (0.01 and 0.1μgmL(-1)). Both phycoerythrocyanin and allophycocyanin levels decreased in all the concentrations of crude extract and MC-LR. The phycocyanin had a marked increase at 0.1μgmL(-1) crude extract concentration and a marked decrease at 1μgmL(-1) MC-LR concentration. These changes in the phycobiliprotein content indicate a shift in the antenna pigments of the cyanobionts of A. filiculoides. The changes in two oxidative stress enzymes, glutathione reductase for the crude extract assay and glutathione peroxidase for MC-LR assay, points towards the induction of stress defense responses. The low bioconcentration factor in both crude extract and MC-LR treatments can suggest the low uptake of microcystins, and indicates that the aquatic fern can be used as a biofertilizer and as animal feed but is not suitable for MC phytoremediation.

Influence of the rest pulse duration in pulsed electrodeposition of Fe nanowires

Highly uniform iron nanowires were synthesized in porous anodic alumina, through a pulsed electrodeposition method. The effect of the rest pulse duration in the deposition quality was systematically investigated, being the best duration found at 0.6 s with 91.9% of pores filled. A methodology of surface response design of experiment was conducted to find the optimum predicted value for the rest pulse duration, by controlling the following experimental parameters/variables: current density, electrolyte concentration and temperature. The influence of the rest pulse in the grain size of the iron nanowires was also studied trough X-ray diffraction patterns. A numerical simulation of the concentration evolution along a nanopore was performed, allowing to achieve a deeper understanding of the importance of the rest pulse in the NW electrodeposition.