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1.
Mar Pollut Bull ; 200: 116156, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38359477

RESUMO

The present study analyzed the content of total mercury (THg) and selenium (Se) in the muscle of shrimp collected from local markets in the 11 Pacific coastal states of Mexico. Methylmercury (MeHg) concentration, Se:Hg ratio, health benefits value from selenium consumption (HBVSe) and the permissible weekly consumption were estimated to assess the health risk to consumers. All THg and Se concentrations were below the maximum permissible limits. All hazard quotient (HQ) values were <1, however in Hermosillo, Culiacán and Guadalajara, the Se:Hg ratio and HBVSe were <1 and negative, due to the low concentrations of Se. As a general conclusion, there is no risk nor benefit from the consumption of shrimp from the Pacific coast of Mexico due to its Hg and Se content.


Assuntos
Mercúrio , Compostos de Metilmercúrio , Selênio , Poluentes Químicos da Água , Animais , Mercúrio/análise , Selênio/análise , México , Poluentes Químicos da Água/análise , Crustáceos
2.
Matern Child Nutr ; 20(1): e13595, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38041537

RESUMO

Prenatal iron supplementation improves children's health and cognitive performance, but few studies explore behavioural development. This study assessed the effects of adjusting prenatal iron supplementation to maternal iron stores during early pregnancy on children's behavioural problems. Randomized controlled trial conducted in Tarragona (Spain) involving 230 nonanaemic pregnant women and their children after a 4-year follow-up. Based on haemoglobin (Hb) levels before gestational week (GW) 12, women receive different iron doses: those with Hb = 110-130 g/L were randomized to receive 80 or 40 mg/day and those with Hb > 130 g/L were randomized to receive 20 or 40 mg/day. Maternal iron stores at GW12 were classified using serum ferritin (SF) as low (SF < 15 µg/L), normal (SF = 15-65 µg/L), and normal-high (SF > 65 µg/L). Children's behaviour was assessed by parents using the Child Behaviour Checklist for ages 1.5-5 years and the Behaviour Rating Inventory of Executive Function-Preschool Version, and by teachers using the Teacher's Report Form for ages 1.5-5 years. Multivariable regression models were performed. Taking 80 mg/day of iron improved child behaviour when women had low iron stores but worsened it when mothers had normal-high iron stores, except for depressive and attention/hyperactivity problems. Taking 20 mg/day of iron improved behaviour only in those children whose mothers had SF > 65 µg/L in early pregnancy. Additionally, executive functioning improved at high doses of prenatal iron when maternal baseline SF < 15 µg/L. Adjusting prenatal iron supplementation to both maternal baseline Hb levels and iron stores reduces behavioural problems in 4-year-old children.


Assuntos
Anemia Ferropriva , Comportamento Problema , Feminino , Gravidez , Humanos , Pré-Escolar , Ferro , Anemia Ferropriva/tratamento farmacológico , Anemia Ferropriva/prevenção & controle , Suplementos Nutricionais , Vitaminas
3.
NeuroRehabilitation ; 54(2): 171-183, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38143386

RESUMO

BACKGROUND: Stroke is a clinical syndrome that can cause neurological disorders due to a reduction or interruption in the blood flow at the brain level. Transcranial direct current stimulation (TDCS) is a non-invasive electrotherapy technique with the ability to modulate the function of nervous tissue. OBJECTIVE: The aim of this review is to analyze the effects derived from the application of the TDCS for post-stroke patients on functionality and mobility. METHODS: The data search was conducted in PubMed, PEDro, Cochrane Library, Web of Science and Scopus between July and August 2023. The search focused on randomized clinical trials conducted in the period of 2019-2023, and according to the selection criteria, seven studies were obtained. RESULTS: The results found are mainly focused on the analysis of the scales Fugl-Meyer Assessment for Upper Extremity and Wolf Motor Function Test. CONCLUSION: The application of TDCS presents benefits in post-stroke individuals on functionality, mobility and other secondary studied variables.


Assuntos
Reabilitação do Acidente Vascular Cerebral , Estimulação Transcraniana por Corrente Contínua , Humanos , Estimulação Transcraniana por Corrente Contínua/métodos , Reabilitação do Acidente Vascular Cerebral/métodos , Modalidades de Fisioterapia , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/terapia , Acidente Vascular Cerebral/fisiopatologia , Adulto
4.
Bull Environ Contam Toxicol ; 111(2): 20, 2023 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-37530948

RESUMO

Total mercury (Hg) and selenium (Se) contents were determined in oysters Saccostrea palmula and Crassostrea corteziensis soft tissues from four coastal lagoons of the southeastern Gulf of California. The annual Hg mean concentrations for S. palmula (0.09 ± 0.04 µg g- 1, wet weight) and C. corteziensis (0.08 ± 0.04 µg g- 1) were similar (p ˃ 0.05) among the lagoons and did not exceed the limit established by the Norma Oficial Mexicana and World Health Organization (< 1.0 µg g- 1 Hg). On the other hand, the annual mean concentrations of Se for S. palmula (3.34 ± 0.96 µg g- 1) and C. corteziensis (2.79 ± 0.89 µg g- 1) were higher (p < 0.05) in El Colorado lagoon. The Se/Hg molar ratios were above 1; the positive selenium health benefit value index suggested that Se load in oysters could reduce the Hg potential toxic effect. The hazard quotient for Hg in both species was below 1. Therefore, the consumption of oysters does not represent a risk due to Hg ingestion.


Assuntos
Crassostrea , Mercúrio , Selênio , Poluentes Químicos da Água , Animais , Humanos , Mercúrio/toxicidade , Monitoramento Ambiental , Poluentes Químicos da Água/toxicidade , Poluentes Químicos da Água/análise , Medição de Risco
5.
Thyroid ; 33(8): 983-996, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37140469

RESUMO

Background: Low levels of triiodothyronine (T3) are common in patients with heart failure (HF). Our aim was to evaluate the effects of supplementation with low and replacement doses of T3 in an animal model of HF with preserved ejection fraction (HFpEF). Methods: We evaluated four groups: ZSF1 Lean (n = 8, Lean-Ctrl), ZSF1 Obese (rat model of metabolic-induced HFpEF, n = 13, HFpEF), ZSF1 Obese treated with a replacement dose of T3 (n = 8, HFpEF-T3high), and ZSF1 Obese treated with a low-dose of T3 (n = 8, HFpEF-T3low). T3 was administered in drinking water from weeks 13 to 24. The animals underwent anthropometric and metabolic assessments, echocardiography, and peak effort testing with maximum O2 consumption (VO2max) determination at 22 weeks, and a terminal hemodynamic evaluation at 24 weeks. Afterwhile myocardial samples were collected for single cardiomyocyte evaluation and molecular studies. Results: HFpEF animals showed lower serum and myocardial thyroid hormone levels than Lean-Ctrl. Treatment with T3 did not normalize serum T3 levels, but increased myocardial T3 levels to normal levels in the HFpEF-T3high group. Body weight was significantly decreased in both the T3-treated groups, comparing with HFpEF. An improvement in glucose metabolism was observed only in HFpEF-T3high. Both the treated groups had improved diastolic and systolic function in vivo, as well as improved Ca2+ transients and sarcomere shortening and relaxation in vitro. Comparing with HFpEF animals, HFpEF-T3high had increased heart rate and a higher rate of premature ventricular contractions. Animals treated with T3 had higher myocardial expression of calcium transporter ryanodine receptor 2 (RYR2) and α-myosin heavy chain (MHC), with a lower expression of ß-MHC. VO2max was not influenced by treatment with T3. Myocardial fibrosis was reduced in both the treated groups. Three animals died in the HFpEF-T3high group. Conclusions: Treatment with T3 was shown to improve metabolic profile, myocardial calcium handling, and cardiac function. While the low dose was well-tolerated and safe, the replacement dose was associated with increased heart rate, and increased risk of arrhythmias and sudden death. Modulation of thyroid hormones may be a potential therapeutic target in HFpEF; however, it is important to take into account the narrow therapeutic window of T3 in this condition.


Assuntos
Insuficiência Cardíaca , Ratos , Animais , Insuficiência Cardíaca/tratamento farmacológico , Volume Sistólico , Tri-Iodotironina/farmacologia , Tri-Iodotironina/uso terapêutico , Cálcio/metabolismo , Modelos Animais de Doenças , Obesidade/complicações
6.
Am J Prev Med ; 65(3): 395-405, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-36906495

RESUMO

INTRODUCTION: The effectiveness of prenatal iron supplementation improves maternal hematological outcomes, but little research has focused on child outcomes. The objective of this study was to assess whether prenatal iron supplementation adjusted to maternal needs improves children's cognitive functioning. METHODS: The analyses included a subsample of nonanemic pregnant women recruited in early pregnancy and their children aged 4 years (n=295). Data were collected between 2013 and 2017 in Tarragona (Spain). On the basis of hemoglobin levels before the 12th gestational week, women receive different iron doses: 80 vs 40 mg/d if hemoglobin is 110-130 g/L and 20 vs 40 mg/d if hemoglobin >130 g/L. Children's cognitive functioning was assessed using the Wechsler Preschool and Primary Scale of Intelligence-IV and Developmental Neuropsychological Assessment-II tests. The analyses were carried out in 2022 after the completion of the study. Multivariate regression models were performed for assessing the association between different doses of prenatal iron supplementation and children's cognitive functioning. RESULTS: Taking 80 mg/d of iron was positively associated with all the scales of the Wechsler Preschool and Primary Scale of Intelligence-IV and Neuropsychological Assessment-II when mothers had initial serum ferritin <15 µg/L, but it was negatively associated with Verbal Comprehension Index, Working Memory Index, Processing Speed Index, and Vocabulary Acquisition Index from Wechsler Preschool and Primary Scale of Intelligence-IV and verbal fluency index from Neuropsychological Assessment-II when mothers showed initial serum ferritin >65 µg/L. In the other group, taking 20 mg/d of iron was positively associated with Working Memory Index, Intelligence Quotient, verbal fluency, and emotion recognition indices when women had initial serum ferritin >65 µg/L. CONCLUSIONS: Prenatal iron supplementation adjusted to the maternal hemoglobin levels and baseline iron stores improves cognitive functioning in children aged 4 years.


Assuntos
Hemoglobinas , Ferro , Pré-Escolar , Criança , Feminino , Humanos , Gravidez , Hemoglobinas/análise , Cognição , Ferritinas , Suplementos Nutricionais
7.
BMC Health Serv Res ; 23(1): 98, 2023 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-36717880

RESUMO

BACKGROUND: Patients with alpha-1 antitrypsin deficiency (AATD), commonly categorized as a rare disease, have been affected by the changes in healthcare management brought about by COVID-19. This study's aim was to identify the changes that have taken place in AATD patient care as a result of the COVID-19 pandemic in Spain and to propose experts' recommendations aimed at ensuring humanized and quality care for people with AATD in the post-pandemic situation. METHODS: A qualitative descriptive case study with a holistic single-case design was conducted, using focus groups with experts in AATD clinical management, including 15 health professionals with ties to the Spanish health system (12 pneumologists and 2 hospital pharmacists from 11 different hospitals in Spain) and 1 patient representative. RESULTS: COVID-19 has had a major impact on numerous aspects of AATD clinical patient management in Spain, including diagnostic, treatment, and follow-up phases. The experts concluded that there is a need to strengthen coordination between Primary Care and Hospital Care and improve the coordination processes across all the organizations and actors involved in the healthcare system. Regarding telemedicine and telecare, experts have concluded that it is necessary to promote this methodology and to develop protocols and training programs. Experts have recommended developing personalized and precision medicine, and patient participation in decision-making, promoting self-care and patient autonomy to optimize their healthcare and improve their quality of life. The possibility of monitoring and treating AATD patients from home has also been proposed by experts. Another result of the study was the recommendation of the need to ensure that plasma donations are made on a regular basis by a sufficient number of healthy individuals. CONCLUSION: The study advances knowledge by highlighting the challenges faced by health professionals and changes in AATD patient management in the context of the COVID-19 pandemic. It also proposes experts' recommendations aimed at ensuring humanized and quality care for people with AATD in the post-pandemic situation. This work could serve as a reference study for physicians on their daily clinical practice with AATD patients and may also provide guidance on the changes to be put in place for the post-pandemic situation.


Assuntos
COVID-19 , Doença Pulmonar Obstrutiva Crônica , Deficiência de alfa 1-Antitripsina , Humanos , Pandemias , Qualidade de Vida , COVID-19/epidemiologia , Deficiência de alfa 1-Antitripsina/diagnóstico , Deficiência de alfa 1-Antitripsina/tratamento farmacológico , Atenção à Saúde , Doença Pulmonar Obstrutiva Crônica/terapia
8.
Bull Environ Contam Toxicol ; 110(2): 42, 2023 Jan 18.
Artigo em Inglês | MEDLINE | ID: mdl-36651996

RESUMO

This study analyzed total mercury (THg), and selenium (Se) in edible tissues of white shrimp (Litopenaeus vannamei), blue shrimp (L. stylirostris) and brown shrimp (F. californiensis), from three states of the Northwest of Mexico in September and October 2017. Concentrations of THg and Se in the muscle were between 0.026 and 0.829 and 0.126-1.741 µg/g dry weight (dw), respectively. Significant differences were observed among Hg concentration of Sonora and Nayarit and among Se concentration of Sinaloa and Nayarit. In addition, the health risk assessment (HQ) in the three species of shrimp was between 0.550 and 0.607. All Se:Hg molar ratios were > 1 and positive HBVSe values that showed that shrimp from Northwest of Mexico does not represent a risk to human health.


Assuntos
Mercúrio , Penaeidae , Selênio , Poluentes Químicos da Água , Humanos , Animais , Mercúrio/análise , Selênio/toxicidade , Selênio/análise , México , Poluentes Químicos da Água/toxicidade , Poluentes Químicos da Água/análise , Medição de Risco , Monitoramento Ambiental
9.
Biomolecules ; 12(10)2022 10 03.
Artigo em Inglês | MEDLINE | ID: mdl-36291625

RESUMO

Diversified strategies to incorporate healthier lipids in processed meat products are being developed. Alternative fat sources to replace animal fat associated with the reduction of fat content are some of the methods used to obtain healthier meat products well recognized by consumers. In order to create a healthier product that can also be consumed in the Halal and Kosher consumer markets, an experimental study was developed to assess the effects of replacing the pork fat (4%) with the same amount of hydrogel emulsion incorporating olive oil or sunflower oil. Three burgers were randomly selected from each lot manufactured and analyzed in triplicate. Burgers were physicochemical analyzed for pH, water activity, composition, fatty acid profile, color, yield, texture, oxidative stability, and volatile compounds and compared according to the fat source. Burgers with hydrogel emulsions can be considered reduced-fat meat products with a healthier fatty acid profile than pork fat burgers. The use of hydrogel emulsions did not negatively affect the quality characteristics assessed in the product and improved the oxidative stability during the storage of cooked burgers. By the characteristics and formulations evaluated, the replacement of pork fat with olive oil hydrogel emulsion proved to be the most effective strategy for obtaining a healthier goat meat product.


Assuntos
Produtos da Carne , Olea , Carne de Porco , Carne Vermelha , Animais , Suínos , Produtos da Carne/análise , Óleo de Girassol , Emulsões/química , Azeite de Oliva , Hidrogéis , Cabras , Óleos de Plantas/química , Ácidos Graxos , Água/química
10.
BMC Pregnancy Childbirth ; 22(1): 710, 2022 Sep 17.
Artigo em Inglês | MEDLINE | ID: mdl-36115950

RESUMO

BACKGROUND: Prenatal prescription of standard iron supplements to prevent iron deficiency appears not to be appropriate for all women and their children, as some women may be at risk of iron deficiency and others at risk of iron excess early in pregnancy. The present study aimed to assess whether prenatal iron supplementation adapted to the needs of each pregnant woman affects their child's neurodevelopment. METHODS: Follow-up of a community-based RCT involving 503 mother-child pairs. Non-anaemic pregnant women recruited in Tarragona (Spain) early in pregnancy were prescribed a daily iron dose based on their initial haemoglobin levels: Stratum 1 (Hb = 110-130 g/L, 80 or 40 mg/d of iron) and Stratum 2 (Hb > 130 g/L, 40 or 20 mg/d of iron). Women receiving 40 mg/d were considered the control group in each Strata. The child's neurodevelopment was assessed at 40 days of age using the Bayley Scales of Infant Development-III (BSID-III). Adjusted multiple regression models were used. RESULTS: Multiple regression analyses showed no association between the intervention and control group within each Strata on the BSID-III scores on any of the developmental scales in children, including cognitive, language, and motor development: Stratum 1 (ß 1.46, 95%CI -2.15, 5.07; ß 1.30, 95%CI -1.99, 4.59; and ß 2.04, 95%CI -3.88, 7.96, respectively) and Stratum 2 (ß -4.04, 95%CI -7.27, 0.80; ß -0.36, 95%CI -3.47, 2.75; and ß -3.76, 95%CI -9.30, 1.78, respectively). CONCLUSIONS: In non-anaemic women in early pregnancy, no differences were found in the cognitive, language and motor development of children at 40 days of age between the dose of iron tested in each case -adjusted to initial Hb levels- compared to the dose of the control group. Further studies are guaranteed to confirm our findings. TRIAL REGISTRATION: The ECLIPSES study was registered at www.clinicaltrialsregister.eu as EudraCT number 2012-005,480-28.


Assuntos
Anemia Ferropriva , Complicações Hematológicas na Gravidez , Anemia Ferropriva/prevenção & controle , Suplementos Nutricionais , Feminino , Seguimentos , Hemoglobinas/análise , Humanos , Ferro , Gravidez , Complicações Hematológicas na Gravidez/prevenção & controle , Vitaminas
11.
Nutrients ; 13(12)2021 Nov 24.
Artigo em Inglês | MEDLINE | ID: mdl-34959756

RESUMO

Besides their direct effects on peripheral metabolic tissues, thyroid hormones (TH) act on the hypothalamus to modulate energy homeostasis. However, since most of the hypothalamic actions of TH have been addressed in studies with direct central administration, the estimation of the relative contribution of the central vs. peripheral effects in physiologic conditions of peripheral release (or administration) of TH remains unclear. In this study we used two different models of peripherally induced hyperthyroidism (i.e., T4 and T3 oral administration) to assess and compare the serum and hypothalamic TH status and relate them to the metabolic effects of the treatment. Peripheral TH treatment affected feeding behavior, overall growth, core body temperature, body composition, brown adipose tissue (BAT) morphology and uncoupling protein 1 (UCP1) levels and metabolic activity, white adipose tissue (WAT) browning and liver metabolism. This resulted in an increased overall uncoupling capacity and a shift of the lipid metabolism from WAT accumulation to BAT fueling. Both peripheral treatment protocols induced significant changes in TH concentrations within the hypothalamus, with T3 eliciting a downregulation of hypothalamic AMP-activated protein kinase (AMPK), supporting the existence of a central action of peripheral TH. Altogether, these data suggest that peripherally administered TH modulate energy balance by various mechanisms; they also provide a unifying vision of the centrally mediated and the direct local metabolic effect of TH in the context of hyperthyroidism.


Assuntos
Proteínas Quinases Ativadas por AMP/efeitos dos fármacos , Metabolismo Energético/efeitos dos fármacos , Hipertireoidismo/metabolismo , Hipotálamo/metabolismo , Hormônios Tireóideos/administração & dosagem , Tecido Adiposo Marrom/metabolismo , Tecido Adiposo Branco/metabolismo , Animais , Modelos Animais de Doenças , Hipertireoidismo/induzido quimicamente , Masculino , Camundongos , Camundongos Endogâmicos C57BL
12.
Small ; 17(38): e2102337, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34369073

RESUMO

Flexible energy storage devices are becoming significantly important to power wearable and portable devices that monitor physiological parameters for many biomedical applications. Many hybrid nanomaterials based on 2D materials are used in order to improve the performance of flexible energy storage devices. Here, a hybrid nanocomposite is synthesized through in situ polymerization of aniline in the presence of black phosphorus (BP) nanoflakes. This nanocomposite, polyaniline (PANI)@BP, is employed to fabricate flexible supercapacitor (FSC) electrodes. PANI@BP FSCs can provide a power source for biometric devices. The generated signal can be transmitted to a smartphone in real time via wireless communication. Such a compact and lightweight integrated device has been used to track a human heart beat while powered by PANI@BP FSC. These findings are providing a promising example of a flexible energy storage device that can be integrated with different real-time health monitoring devices.


Assuntos
Nanocompostos , Fósforo , Compostos de Anilina , Monitoramento Biológico , Humanos
13.
J Wound Ostomy Continence Nurs ; 48(4): 350-355, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34186555

RESUMO

BACKGROUND: There is increasing evidence regarding the wound healing potential of platelet-derived autologous by-products. We provide preliminary data regarding the use of a new plasma rich in growth factors-derived autologous topical ointment for the management of hard-to-heal wounds. CASES: Four patients suffering from difficult-to-heal wounds were treated with the autologous ointment. Within 2 to 8 weeks, all wounds healed completely with no signs of infection or functional impairment of the affected limbs. No adverse events were reported. CONCLUSION: Randomized and controlled trials are needed to determine the clinical efficacy of the autologous ointment. Nevertheless, results from this multiple case series indicate that this approach may be useful for accelerating the re-epithelization of difficult-to-heal wounds.


Assuntos
Pé Diabético/terapia , Transfusão de Plaquetas/métodos , Lesões dos Tecidos Moles/terapia , Úlcera Varicosa/terapia , Cicatrização , Adulto , Transfusão de Sangue Autóloga/métodos , Doença Crônica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pomadas , Plasma Rico em Plaquetas
14.
Environ Sci Pollut Res Int ; 28(9): 10909-10917, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33106905

RESUMO

Mercury and selenium concentrations and Se:Hg molar ratio in edible muscle and hepatopancreas of the crab Callinectes arcuatus from coastal lagoons of northwest Mexico were determined using atomic absorption spectrophotometry. The three coastal lagoons were Santa María La Reforma (SMLR), Urías (UR), and Huizache-Caimanero (HC); samplings were carried out from December 2016 to October 2017. The mercury ranges in the muscle of C. arcuatus in SMLR, UR, and HC lagoons were 0.31-0.52, 0.15-0.45, and 0.22-0.55 µg g-1, respectively. In hepatopancreas, the values ranged from 0.08 to 0.15, 0.06 to 0.15, and 0.05 to 0.12 µg g-1 in SMLR, UR, and HC lagoons, in that order. For selenium concentrations in C. arcuatus muscle, the ranges 11.64-20.14, 14.88-19.71, and 15.27-29.51 µg g-1 were determined in SMLR, UR, and HC lagoons, respectively. While for hepatopancreas, the ranges were 34.34-44.13, 27.77-40.45, and 15.16-49.80 µg g-1, in that order. No significant relationships (p > 0.05) between mercury and selenium concentrations (in white meat and hepatopancreas) were observed in C. arcuatus carapace width and length. Se:Hg molar ratio values were 98.1 ± 20.8, 171.4 ± 81.6, and 176.8 ± 51.2 for SMLR, UR, and HC lagoons, in that order. This high ratio (> 1) in C. arcuatus edible muscle indicated that selenium concentration was sufficient to neutralize possible mercury toxicity, so it does not represent danger to humans when it is consumed.


Assuntos
Braquiúros , Mercúrio , Selênio , Poluentes Químicos da Água , Animais , Monitoramento Ambiental , Humanos , Mercúrio/análise , México , Selênio/análise , Poluentes Químicos da Água/análise
15.
Ecotoxicol Environ Saf ; 207: 111288, 2021 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-32949929

RESUMO

Inactivation by adding different phosphorus (P) adsorbents is one of the most frequently used methods for combating inland water eutrophication. The aim of this work was to assess the toxic effects of novel P adsorbents (magnetic particles, MPs) on the phytoplankton community. An outdoor microcosm experiment, containing lake water and surface sediment from a hypertrophic Mediterranean lake, was carried out following a factorial design (n = 5) with three different treatments: control (C), where no MPs were added; Treatment-Water (T-W) and Treatment-Sediment (T-S). In T-W and T-S treatments, MPs were added on the surface water layer and on the sediment, respectively, to obtain a final concentration of 1.4 g MP L-1. This concentration was based on both the sedimentary mobile P concentration of the study site and the maximum P adsorption capacity of the MPs, obtained from the literature. After 24 h of contact time, the MPs were removed using a magnetic rake. Physicochemical measurements and biological samples were taken after 24 h of exposure to the MPs and at different time points after such exposure (day 2, 7, 21, 35 and 70). Changes in phytoplankton community such as abundance (biovolume and Chla), species composition and taxonomic groups were assessed, as well as changes in the Shannon-Wiener diversity index. Additionally, the eutrophic metric Algae Group Index (AGI), one of the metrics proposed in the Water Framework Directive, was also calculated. Our results indicate that there is no strong evidence to infer that MPs caused an effect on the phytoplankton community, since no significant differences (GLM test; p > 0.05) were found between controls and treatments in any of the studied variables (phytoplankton taxonomic groups, AGI, Chla concentration, biovolume, diversity and community responses). Accordingly, MPs did not cause any toxic effects on the phytoplankton community of the lake, encouraging the use of MPs in a future whole-lake restoration strategy. However, if the final goal of the restoration plan is to combat nuisance cyanobacteria blooms, higher initial MPs doses or repeated MPs applications are required to achieve a reduction in P concentrations below biological thresholds in order to prevent algal blooms.


Assuntos
Recuperação e Remediação Ambiental/métodos , Ferro/química , Lagos/química , Nanopartículas/química , Fósforo/análise , Fitoplâncton/crescimento & desenvolvimento , Poluentes Químicos da Água/análise , Adsorção , Eutrofização , Fenômenos Magnéticos , Fitoplâncton/classificação , Fitoplâncton/metabolismo , Espanha
16.
Cells ; 9(12)2020 12 04.
Artigo em Inglês | MEDLINE | ID: mdl-33291545

RESUMO

Pro-inflammatory CD4+CD28- T cells are characteristic of immunosenescence, but also of several autoimmune/inflammatory diseases. Vasoactive intestinal peptide (VIP) acts as an anti-inflammatory and immunomodulatory mediator on these cells. Our objective was to study the mutual influence between senescent Th cells and VIP axis in early arthritis (EA), comparing with non-EA donors. We characterized the correlation between senescent Th cells and clinic parameters of EA as well as the behavior of senescent Th biomarkers by real-time PCR. Clinical data were systematically recorded at baseline and after 6 months of follow-up. The number of CD4+CD28- T cells measured by sorting is higher in patients who initially meet ACR classification criteria for rheumatoid arthritis (RA) compared to those who were classified as undifferentiated arthritis (UA). A slight positive correlation between EA CD4+CD28- T cells and CRP or ESR and a negative correlation with bone mineral density were found. Th senescent biomarkers in EA CD4+CD28- T cells were similar to donors, however some of them increased after 6 months of follow-up. VPAC receptors were analyzed by real-time PCR and immunofluorescence, and CD4+CD28- T cells showed higher expression of VPAC2 and lower of VPAC1, VPAC2 showing a significant increased expression in EA cells. Sorted CD4+CD28- T cells were in vitro expanded in presence of VIP, wherein VIP increased senescent biomarker CD27, while it diminished CD57 or NKG2 senescent biomarkers. Our study demonstrates for the first time the existence of a link between senescent Th cells and the VIP axis.


Assuntos
Artrite/metabolismo , Biomarcadores/metabolismo , Senescência Celular , Peptídeo Intestinal Vasoativo/metabolismo , Idoso , Artrite Reumatoide , Sedimentação Sanguínea , Densidade Óssea , Antígenos CD28/metabolismo , Linfócitos T CD4-Positivos/citologia , Antígenos CD57/metabolismo , Células Cultivadas , Progressão da Doença , Feminino , Perfilação da Expressão Gênica , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Espanha
17.
Nutrients ; 12(10)2020 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-33086652

RESUMO

Vitamin D status during pregnancy is involved in numerous physiological processes, including brain development. In this study, we assess the association between vitamin D status during pregnancy and infant neurodevelopment (cognitive, language, and motor skills). From an initial sample of 793 women (mean age 30.6) recruited before the 12th week of pregnancy, 422 mother-infant pairs were followed up to a postpartum visit. Vitamin D levels were assessed in the first and third trimesters of pregnancy, and socio-demographic, nutritional, and psychological variables were collected. At 40 days postpartum, the Bayley Scales of Infant Development-III were administered to the infants and several obstetrical data were recorded. Independently from several confounding factors, deficient vitamin D levels in the first trimester of pregnancy (<30 nmol/L) predicted a worse performance in cognitive and language skills. Language performance worsened with lower vitamin D levels (<20 nmol/L). In the third trimester, this highly deficient level was also associated with lower motor skills. Vitamin D deficiency was therefore associated with worse neurodevelopmental outcomes. More studies are needed to determine specific recommendations with regard to vitamin D supplementation during pregnancy in order to promote an optimal course for pregnancy and optimal infant neurodevelopment.


Assuntos
Desenvolvimento Infantil/fisiologia , Suplementos Nutricionais , Desenvolvimento Fetal/fisiologia , Fenômenos Fisiológicos da Nutrição Materna/fisiologia , Troca Materno-Fetal/fisiologia , Transtornos do Neurodesenvolvimento/prevenção & controle , Estado Nutricional , Fenômenos Fisiológicos da Nutrição Pré-Natal/fisiologia , Vitamina D/administração & dosagem , Adulto , Feminino , Humanos , Lactente , Recém-Nascido , Transtornos do Neurodesenvolvimento/etiologia , Gravidez , Deficiência de Vitamina D/complicações , Adulto Jovem
18.
Elife ; 82019 07 08.
Artigo em Inglês | MEDLINE | ID: mdl-31282861

RESUMO

Patients with hippocampal amnesia play a central role in memory neuroscience but the neural underpinnings of amnesia are hotly debated. We hypothesized that focal hippocampal damage is associated with changes across the extended hippocampal system and that these, rather than hippocampal atrophy per se, would explain variability in memory between patients. We assessed this hypothesis in a uniquely large cohort of patients (n = 38) after autoimmune limbic encephalitis, a syndrome associated with focal structural hippocampal pathology. These patients showed impaired recall, recognition and maintenance of new information, and remote autobiographical amnesia. Besides hippocampal atrophy, we observed correlatively reduced thalamic and entorhinal cortical volume, resting-state inter-hippocampal connectivity and activity in posteromedial cortex. Associations of hippocampal volume with recall, recognition, and remote memory were fully mediated by wider network abnormalities, and were only direct in forgetting. Network abnormalities may explain the variability across studies of amnesia and speak to debates in memory neuroscience.


Assuntos
Amnésia/fisiopatologia , Hipocampo/fisiopatologia , Memória/fisiologia , Rede Nervosa/fisiopatologia , Adolescente , Adulto , Idoso , Amnésia/complicações , Atrofia , Doenças Autoimunes/complicações , Doenças Autoimunes/fisiopatologia , Estudos de Coortes , Feminino , Hipocampo/patologia , Humanos , Encefalite Límbica/complicações , Encefalite Límbica/fisiopatologia , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Rede Nervosa/anormalidades , Tálamo/patologia , Tálamo/fisiopatologia
19.
J Clin Oncol ; 35(30): 3425-3432, 2017 Oct 20.
Artigo em Inglês | MEDLINE | ID: mdl-28846465

RESUMO

Purpose To compare the outcome of patients with Hodgkin lymphoma who received post-transplantation cyclophosphamide-based haploidentical (HAPLO) allogeneic hematopoietic cell transplantation with the outcome of patients who received conventional HLA-matched sibling donor (SIB) and HLA-matched unrelated donor (MUD). Patients and Methods We retrospectively evaluated 709 adult patients with Hodgkin lymphoma who were registered in the European Society for Blood and Marrow Transplantation database who received HAPLO (n = 98), SIB (n = 338), or MUD (n = 273) transplantation. Results Median follow-up of survivors was 29 months. No differences were observed between groups in the incidence of acute graft-versus-host disease (GVHD). HAPLO was associated with a lower risk of chronic GVHD (26%) compared with MUD (41%; P = .04). Cumulative incidence of nonrelapse mortality at 1 year was 17%, 13%, and 21% in HAPLO, SIB, and MUD, respectively, and corresponding 2-year cumulative incidence of relapse or progression was 39%, 49%, and 32%, respectively. On multivariable analysis, relative to SIB, nonrelapse mortality was similar in HAPLO ( P = .26) and higher in MUD ( P = .003), and risk of relapse was lower in both HAPLO ( P = .047) and MUD ( P < .001). Two-year overall survival and progression-free survival were 67% and 43% for HAPLO, 71% and 38% for SIB, and 62% and 45% for MUD, respectively. There were no significant differences in overall survival or progression-free survival between HAPLO and SIB or MUD. The rate of the composite end point of extensive chronic GVHD and relapse-free survival was significantly better for HAPLO (40%) compared with SIB (28%; P = .049) and similar to MUD (38%; P = .59). Conclusion Post-transplantation cyclophosphamide-based HAPLO transplantation results in similar survival outcomes compared with SIB and MUD, which confirms its suitability when no conventional donor is available. Our results also suggest that HAPLO results in a lower risk of chronic GVHD than MUD transplantation.


Assuntos
Ciclofosfamida/uso terapêutico , Transplante de Células-Tronco Hematopoéticas/métodos , Doença de Hodgkin/terapia , Sistema de Registros/estatística & dados numéricos , Adolescente , Adulto , Idoso , Transplante de Medula Óssea/efeitos adversos , Transplante de Medula Óssea/métodos , Intervalo Livre de Doença , Europa (Continente) , Feminino , Doença Enxerto-Hospedeiro/diagnóstico , Doença Enxerto-Hospedeiro/etiologia , Haplótipos , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Humanos , Imunossupressores/uso terapêutico , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Recidiva Local de Neoplasia , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Irmãos , Transplante Homólogo , Doadores não Relacionados , Adulto Jovem
20.
Public Health Nutr ; 20(8): 1405-1413, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28162128

RESUMO

OBJECTIVE: To determine the associations between haemoconcentration at the end of pregnancy (third trimester and delivery) and neonatal behaviour in healthy pregnant women supplemented with moderate doses of Fe. DESIGN: A prospective longitudinal study in which obstetric and clinical history, maternal toxic habits, maternal anxiety and Hb levels were recorded at the third trimester and delivery. Neonatal behaviour was assessed at 48-72 h of age using the Neonatal Behavioral Assessment Scale. SETTING: Unit of Obstetrics and Gynaecology of the Sant Joan University Hospital in Reus, Tarragona (Spain). SUBJECTS: A total of 210 healthy and well-nourished pregnant women and their full-term, normal-weight newborns. RESULTS: The results showed that, after adjusting for confounders, in the third trimester the risk of haemoconcentration (6·2 % of pregnant women) was related to decreased neonatal state regulation (B=-1·273, P=0·006) and alertness (B=-1·848, P=0·006) scores. In addition, the risk of haemoconcentration at delivery (12·0 % of pregnant women) was also related to decreased neonatal state regulation (B=-0·796, P=0·021) and poor robustness and endurance (B=-0·921, P=0·005) scores. CONCLUSIONS: Our results show that the risk of haemoconcentration at the end of pregnancy is related to the neonate's neurodevelopment (and self-regulation capabilities), suggesting that Fe supplementation patterns and maternal Fe status during pregnancy are important factors for neurodevelopment which may be carefully controlled.


Assuntos
Comportamento do Lactente , Ferro da Dieta/sangue , Fenômenos Fisiológicos da Nutrição Materna , Terceiro Trimestre da Gravidez/sangue , Adulto , Anemia Ferropriva/sangue , Anemia Ferropriva/diagnóstico , Peso ao Nascer , Suplementos Nutricionais , Relação Dose-Resposta a Droga , Feminino , Hemoglobinas/metabolismo , Humanos , Recém-Nascido , Ferro da Dieta/administração & dosagem , Estudos Longitudinais , Gravidez , Cuidado Pré-Natal , Estudos Prospectivos , Fatores de Risco , Fatores Socioeconômicos , Espanha
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