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1.
Korean J Physiol Pharmacol ; 27(1): 9-20, 2023 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-36575929

RESUMO

The mechanism is unclear for the reported protective effect of hyperbaric oxygen preconditioning against oxidative stress in tissues, and the distinct effects of hyperbaric oxygen applied after stress. The trained mice were divided into three groups: the control, hyperbaric oxygenation preconditioning, and hyperbaric oxygenation applied after mild (fasting) or hard (prolonged exercise) stress. After preconditioning, we observed a decrease in basal levels of nitric oxide, tetrahydrobiopterin, and catalase despite the drastic increase in inducible and endothelial nitric oxide synthases. Moreover, the basal levels of glutathione, related enzymes, and nitrosative stress only increased in the preconditioning group. The control and preconditioning groups showed a similar mild stress response of the endothelial and neuronal nitric oxide synthases. At the same time, the activity of all nitric oxide synthase, glutathione (GSH) in muscle, declined in the experimental groups but increased in control during hard stress. The results suggested that hyperbaric oxygen preconditioning provoked uncoupling of nitric oxide synthases and the elevated levels of GSH in muscle during this study, while hyperbaric oxygen applied after stress showed a lower level of GSH but higher recovery post-exercise levels in the majority of antioxidant enzymes. We discuss the possible mechanisms of the redox response and the role of the nitric oxide in this process.

2.
Am J Dermatopathol ; 44(12): 968-970, 2022 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-36395452

RESUMO

ABSTRACT: Episodic hypereosinophilia and angioedema syndrome, also known as Gleich syndrome, is a rare entity characterized by recurrent episodes of eosinophilia, angioedema, urticaria, fever and weight gain with spontaneous resolution. It is classified as an idiopathic hypereosinophilic syndrome. Unlike other hypereosinophilic syndromes, it has a low risk for internal organ damage. We report the case of a 42-year-old male with a 28-year history of recurrent erythematous wheals and plaques and persistent hypereosinophilia. Physical examination revealed a well-defined subcutaneous nodule on his right lower limb that increased in size with each episode of angioedema. Histopathology evidenced a lipoma with intense eosinophil infiltration within the mature adipose tissue, while the specimen of the wheal revealed scarce perivascular and interstitial eosinophilic inflammatory infiltrate. Diagnosis of episodic angioedema with eosinophilia syndrome was made based on clinical and laboratory findings.


Assuntos
Angioedema , Eosinofilia , Neoplasias Cutâneas , Urticária , Masculino , Humanos , Adulto , Angioedema/etiologia , Angioedema/patologia , Eosinofilia/complicações , Eosinofilia/patologia , Febre
3.
J Sci Food Agric ; 102(7): 2686-2692, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-34693528

RESUMO

BACKGROUND: Ice plant is a halophyte, known for its antioxidant activity and for being a highly functional food. It is capable of increasing its contents of health-promoting compounds when subjected to certain stresses such as salinity. The objective of this work was to determine the plant's best growing conditions to achieve both an optimal production of bioactive metabolites and high crop yield. Mesembryanthemum crystallinum were grown under semi-controlled conditions and four saline treatments were applied at: 0, 100, 200 and 300 mmol L-1 sodium chloride (NaCl), respectively. RESULTS: The 100 mmol L-1 NaCl treatment induced a slight increase in shoot dry weight (DW) and enhanced the leaf area. At higher salinity levels, however, the shoot biomass decreased. The concentration of starch and total proteins declined as the concentration of salt increased, while the total soluble sugars (TSS) content was lower in 100 and 300 mmol L-1 NaCl treatments. Proline increased in conditions over 100 mmol L-1 NaCl. Furthermore, plants grown with 300 mmol L-1 of NaCl presented the highest values of glutathione, ascorbic acid and vitamin C. Antioxidant enzymes activity and total phenolics increased with the severity of the salinity. CONCLUSION: Ice plant accumulates high levels of health-promoting compounds when grown with 300 mmol L-1 NaCl. A high concentration of beneficial compounds, however, is detrimental to the plant's growth. Moreover, 100 mmol L-1 NaCl treatment not only improved the concentration of bioactive and antioxidant compounds but also preserved the crop yield. It could thus be interesting to promote the cultivation of this high nutritional value plant in environments of moderate salinity. © 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.


Assuntos
Mesembryanthemum , Antioxidantes/análise , Ácido Ascórbico/metabolismo , Mesembryanthemum/metabolismo , Folhas de Planta/química , Plantas Comestíveis/metabolismo , Salinidade , Plantas Tolerantes a Sal/metabolismo , Cloreto de Sódio/metabolismo
5.
J Cardiovasc Pharmacol ; 71(3): 147-154, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29112589

RESUMO

Cardiovascular disease development has been associated with sex differences, suggesting that sex hormones are implicated in vascular function and development of hypertension. Vascular tone comparison at different stages of rat growth represents a good model to study testosterone-related vascular response. We explored the role of testosterone in modulation of age-dependent impaired ß-adrenergic vasodilation. The 3-week-old male Sprague-Dawley rats were sorted in 3-week-old rats without any manipulation and 3-week-old rats treated with testosterone. The 9-week-old rats were randomly grouped into 9-week-old rats without any manipulation (sham), 9-week-old rats that underwent gonadectomy (9-week-old castrated), and 9-week-old castrated treated with testosterone replacement therapy (9-week-old castrated + testosterone). Vascular relaxation was evaluated in aortic rings. ß-adrenergic receptor protein expression, cyclic adenosine monophosphate production, testosterone levels, and adenylyl cyclase (AC) gene expression were assessed. Testosterone levels were low in 3-week-old and 9-week-old castrated rats compared with 9-week-old sham rats. Testosterone replacement raised these levels in 3-week-old and 9-week-old castrated rats similar to those of 9-week-old sham rats. SQ22536, the AC inhibitor, prevented isoproterenol-induced relaxation in aortic rings from 3-week-old and 9-week-old castrated rats. The ß-adrenergic receptor protein expression was similar in all experimental groups. AC mRNA and protein expression and cyclic adenosine monophosphate levels were elevated in 3-week-old and 9-week-old castrated rats compared with 3-week-old + testosterone, 9-week-old sham, and 9-week-old castrated + testosterone rats. In conclusion, we demonstrated that age maturation was associated with vascular relaxation impairment. Variations in testosterone levels and reduced AC expression may be responsible for this altered vascular function.


Assuntos
Adenilil Ciclases/metabolismo , Androgênios/farmacologia , Aorta/efeitos dos fármacos , Terapia de Reposição Hormonal , Receptores Adrenérgicos beta 2/metabolismo , Testosterona/farmacologia , Vasodilatação/efeitos dos fármacos , Adenilil Ciclases/genética , Agonistas Adrenérgicos beta/farmacologia , Fatores Etários , Animais , Aorta/enzimologia , AMP Cíclico/metabolismo , Técnicas In Vitro , Isoproterenol/farmacologia , Masculino , Orquiectomia , Ratos Sprague-Dawley , Receptores Adrenérgicos beta 2/genética , Sistemas do Segundo Mensageiro/efeitos dos fármacos , Testosterona/deficiência
6.
Ann Hepatol ; 14(4): 540-6, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26019041

RESUMO

BACKGROUND: The study of NAFLD in humans has several limitations. Using murine models helps to understand disease pathogenesis. AIM: Evaluate the impact of 4 different diets in the production of NAFLD with emphasis on a combined high-fat plus sustained high sucrose consumption. MATERIAL AND METHODS: Eight week-old male Wistar rats were divided in four groups and fed for 90 days with the following diets: 1) Control chow diet (C); 2) High-fat cholesterol diet (HFC) + 5% sucrose in drinking water. 3) High-fat cornstarch diet (HFCO) + 5% sucrose in drinking water. 4) Chow diet + 20% sucrose in drinking water (HSD). Metabolic changes, leptin levels, liver histology, hepatic and plasma lipid composition, fasting plasma glucose and insulin and liver gene expression of FAS, SREBP-1 and PPAR-α were evaluated. RESULTS: The HFC diet had the highest grade of steatosis (grade 2 of 3) and HSD showed also steatosis (grade 1). Liver weight TG and colesterol concentrations in liver were greater in the HFC diet. There were no increased levels of iron in the liver. Rats in HFC gained significantly more weight (P < 0.001). All experimental groups showed fasting hyperglycemia. HFC had the highest glucose level (158.5 ± 7 mg/dL) (P < 0.005). The HSD and the HFCO diets developed also hyperglycemia. HSD had significantly higher fasting hyperinsulinemia. Serum leptin was higher in the HFC diet (p = 0.001). In conclusion, the HFC diet with combination of high fat and high sucrose is more effective in producing NAFLD compared with a high sucrose diet only.


Assuntos
Dieta Hiperlipídica , Sacarose Alimentar , Fígado/metabolismo , Hepatopatia Gordurosa não Alcoólica/etiologia , Animais , Biomarcadores/sangue , Glicemia/metabolismo , Sacarose Alimentar/sangue , Modelos Animais de Doenças , Ácido Graxo Sintases/genética , Ácido Graxo Sintases/metabolismo , Regulação da Expressão Gênica , Hiperglicemia/sangue , Hiperglicemia/etiologia , Hiperglicemia/genética , Hiperinsulinismo/sangue , Hiperinsulinismo/etiologia , Hiperinsulinismo/genética , Insulina/sangue , Ferro/metabolismo , Leptina/sangue , Lipídeos/sangue , Fígado/patologia , Masculino , Hepatopatia Gordurosa não Alcoólica/sangue , Hepatopatia Gordurosa não Alcoólica/genética , Hepatopatia Gordurosa não Alcoólica/patologia , PPAR alfa/genética , PPAR alfa/metabolismo , Ratos Wistar , Índice de Gravidade de Doença , Proteína de Ligação a Elemento Regulador de Esterol 1/genética , Proteína de Ligação a Elemento Regulador de Esterol 1/metabolismo , Fatores de Tempo , Aumento de Peso
7.
Plant Cell Physiol ; 55(12): 2047-59, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25246493

RESUMO

Climatic change predicts elevated salinity in soils as well as increased carbon dioxide dioxide [CO2] in the atmosphere. The present study aims to determine the effect of combined salinity and elevated [CO2] on sulfur (S) metabolism and S-derived phytochemicals in green and purple broccoli (cv. Naxos and cv. Viola, respectively). Elevated [CO2] involved the amelioration of salt stress, especially in cv. Viola, where a lower biomass reduction by salinity was accompanied by higher sodium (Na(+)) and chloride (Cl(-)) compartmentation in the vacuole. Moreover, salinity and elevated [CO2] affected the mineral and glucosinolate contents and the activity of biosynthetic enzymes of S-derived compounds and the degradative enzyme of glucosinolate metabolism, myrosinase, as well as the related amino acids and the antioxidant glutathione (GSH). In cv. Naxos, elevated [CO2] may trigger the antioxidant response to saline stress by means of increased GSH concentration. Also, in cv. Naxos, indolic glucosinolates were more influenced by the NaCl×CO2 interaction whereas in cv. Viola the aliphatic glucosinolates were significantly increased by these conditions. Salinity and elevated [CO2] enhanced the S cellular partitioning and metabolism affecting the myrosinase-glucosinolate system.


Assuntos
Brassica/genética , Dióxido de Carbono/farmacologia , Glicosídeo Hidrolases/genética , Cloreto de Sódio/farmacologia , Enxofre/metabolismo , Antioxidantes/metabolismo , Brassica/efeitos dos fármacos , Brassica/fisiologia , Genótipo , Glucosinolatos/metabolismo , Glutationa/metabolismo , Glicosídeo Hidrolases/metabolismo , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Salinidade , Estresse Fisiológico
8.
New Phytol ; 200(4): 1247-59, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23879229

RESUMO

Legumes in the genus Aeschynomene form nitrogen-fixing root nodules in association with Bradyrhizobium strains. Several aquatic and subaquatic species have the additional capacity to form stem nodules, and some of them can symbiotically interact with specific strains that do not produce the common Nod factors synthesized by all other rhizobia. The question of the emergence and evolution of these nodulation characters has been the subject of recent debate. We conducted a molecular phylogenetic analysis of 38 different Aeschynomene species. The phylogeny was reconstructed with both the chloroplast DNA trnL intron and the nuclear ribosomal DNA ITS/5.8S region. We also tested 28 Aeschynomene species for their capacity to form root and stem nodules by inoculating different rhizobial strains, including nodABC-containing strains (ORS285, USDA110) and a nodABC-lacking strain (ORS278). Maximum likelihood analyses resolved four distinct phylogenetic groups of Aeschynomene. We found that stem nodulation may have evolved several times in the genus, and that all Aeschynomene species using a Nod-independent symbiotic process clustered in the same clade. The phylogenetic approach suggested that Nod-independent nodulation has evolved once in this genus, and should be considered as a derived character, and this result is discussed with regard to previous experimental studies.


Assuntos
Evolução Biológica , Fabaceae/genética , Fabaceae/fisiologia , Simbiose/genética , Sequência de Bases , DNA de Cloroplastos/genética , DNA Intergênico/genética , Íntrons/genética , Dados de Sequência Molecular , Filogenia , Alinhamento de Sequência
9.
Gels ; 9(8)2023 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-37623063

RESUMO

In the present work, a biocatalytic glucose optical sensor produced by immobilizing glucose oxidase (GOD) as a recognition molecule over a PMMA (polymethylmethacrylate) optical fiber is introduced. An enzymatic encapsulation process was carried out using the sol-gel method, depositing a TEOS-based coating by immersion at the end of an optical fiber; the biosensor was characterized using different glucose levels. Finally, the best way to encapsulate the enzyme and prevent it from degrading is to perform the process at room temperature, and later implement the deposition of the coating on the fiber. The drying process was optimal below 8 °C.

10.
Cells ; 12(6)2023 03 21.
Artigo em Inglês | MEDLINE | ID: mdl-36980297

RESUMO

Brain vascular health appears to be critical for preventing the development of amyotrophic lateral sclerosis (ALS) and slowing its progression. ALS patients often demonstrate cardiovascular risk factors and commonly suffer from cerebrovascular disease, with evidence of pathological alterations in their small cerebral blood vessels. Impaired vascular brain health has detrimental effects on motor neurons: vascular endothelial growth factor levels are lowered in ALS, which can compromise endothelial cell formation and the integrity of the blood-brain barrier. Increased turnover of neurovascular unit cells precedes their senescence, which, together with pericyte alterations, further fosters the failure of toxic metabolite removal. We here provide a comprehensive overview of the pathogenesis of impaired brain vascular health in ALS and how novel magnetic resonance imaging techniques can aid its detection. In particular, we discuss vascular patterns of blood supply to the motor cortex with the number of branches from the anterior and middle cerebral arteries acting as a novel marker of resistance and resilience against downstream effects of vascular risk and events in ALS. We outline how certain interventions adapted to patient needs and capabilities have the potential to mechanistically target the brain microvasculature towards favorable motor cortex blood supply patterns. Through this strategy, we aim to guide novel approaches to ALS management and a better understanding of ALS pathophysiology.


Assuntos
Esclerose Lateral Amiotrófica , Córtex Motor , Humanos , Esclerose Lateral Amiotrófica/metabolismo , Córtex Motor/metabolismo , Fator A de Crescimento do Endotélio Vascular/metabolismo , Neurônios Motores/patologia , Barreira Hematoencefálica/patologia
11.
BMC Zool ; 7(1): 48, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36042784

RESUMO

Background: The degree of temporal overlap between sympatric wild hosts species and their behavioral interactions can be highly relevant to the transmission of pathogens. However, this topic has been scantly addressed. Furthermore, temporal overlap and interactions within an assemblage of wild rodents composed of native and introduced species have been rarely discussed worldwide. We assessed the nocturnal activity patterns and interactions between rodent taxa of an assemblage consisting of native species (Oligoryzomys longicaudatus, Abrothrix hirta, and Abrothrix olivaceus) and the introduced black rat (Rattus rattus) in a temperate forest from southern Chile. All rodent species in this study are known hosts for various zoonotic pathogens. Results: We found a high nocturnal temporal overlap within the rodent assemblage. However, pairwise comparisons of temporal activity patterns indicated significant differences among all taxa. Rattus rattus showed aggressive behaviors against all native rodents more frequently than against their conspecifics. As for native rodents, agonistic behaviors were the most common interactions between individuals of the same taxon and between individuals of different taxa (O. longicaudatus vs Abrothrix spp.). Conclusions: Our findings reveal several interactions among rodent taxa that may have implications for pathogens such as hantaviruses, Leptospira spp., and vector-borne pathogens. Furthermore, their transmission may be facilitated by the temporal overlap observed between rodent taxa. Supplementary Information: The online version contains supplementary material available at 10.1186/s40850-022-00152-7.

12.
Pediatr Infect Dis J ; 41(2): 140-144, 2022 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-34609106

RESUMO

INTRODUCTION: Although most cases of coccidioidomycosis are subclinical or self-limited respiratory disease, 1% lead to extrathoracic dissemination and become fatal, especially in patients with an associated immunodeficiency. Up to 30%-50% of patients with defects in cell-mediated immunity, those with AIDS and recipients of solid-organ transplants, may develop disseminated coccidioidomycosis (DC). Within the primary immunodeficiencies, an uncommon group is caused by C-terminal NFKB2 pathogenic variants. MATERIALS AND METHODS: We performed a literature search of core databases. Written informed consent for the study and for publication was obtained. CASE PRESENTATION: A 7-year-old Mexican girl, eldest of 3 sisters, no relevant family history, and a history of recurrent upper respiratory infections and alopecia totalis was admitted with DC involving pulmonary, soft tissue, skin, bone and joint compromise. The immunodeficiency assessment showed low IgM and NK cells. We found an NFKB2 de novo heterozygous nonsense mutation of c.2611C>T (p.Gln871*). She was treated with liposomal amphotericin B and itraconazole with surgical debridement. The clinical phenotype of this primary immunodeficiency is characterized by antibody deficiency and associated broncho-pulmonary predisposition to infection, but moreover also opportunistic infections and autoimmunity, most recognizable alopecia and adrenocorticotropic hormone-deficiency. After 1 year of her discharge, she continues under surveillance with antifungal therapy with itraconazole and replacement intravenous immunoglobulin until today. CONCLUSION: This is the first case report of DC in a patient with an NFKB2 pathogenic variant and it illustrates the importance of screening for primary immunodeficiencies in patients with disseminated fungal infections.


Assuntos
Coccidioidomicose , Subunidade p52 de NF-kappa B/genética , Infecções Oportunistas , Doenças da Imunodeficiência Primária , Alopecia , Antifúngicos/uso terapêutico , Criança , Coccidioidomicose/complicações , Coccidioidomicose/diagnóstico , Coccidioidomicose/tratamento farmacológico , Coccidioidomicose/patologia , Códon sem Sentido/genética , Feminino , Humanos , Infecções Oportunistas/complicações , Infecções Oportunistas/diagnóstico , Infecções Oportunistas/tratamento farmacológico , Infecções Oportunistas/patologia , Doenças da Imunodeficiência Primária/complicações , Couro Cabeludo/patologia
13.
Animals (Basel) ; 11(11)2021 Oct 22.
Artigo em Inglês | MEDLINE | ID: mdl-34827769

RESUMO

Even though behavioural and physiological reactions to predation risk exhibited by prey species have received considerable attention in scientific journals, there are still many questions still unsolved. Our aim was to broaden the knowledge on one specific question: do long-tailed pygmy rice rats adapt their behavioural and physiological antipredator strategies depending on the predator species? For this question, we live-trapped in a temperate forest in Southern Chile long-tailed pygmy rice rats (Oligoryzomys longicaudatus), which were exposed to three predator odour phases (Phase 0: preliminary, no predator cues; Phase 1: one plot with culpeo fox faeces (Lycalopex culpaeus), one plot with lesser grison (Galictis cuja) faeces and one plot acting as a control with no odour; Phase 2: post treatment, no predator cues). We measured the behavioural response by the capture ratio. To assess the physiological stress response, we collected fresh faecal samples to quantify faecal corticosterone metabolites (FCM). Our results showed that O. longicaudatus increased both the capture ratio and FCM levels in the presence of culpeo cues. Culpeo foxes have higher densities in the study area than G. cuja and exhibit a higher activity pattern overlap with O. longicaudatus. Moreover, it has been also been reported in other regions that L. culpaeus consumption of O. longicaudatus is more frequent compared to G. cuja diet. The increase in capturability could be because traps can be regarded as a shelter in high-risk settings, but it can also be explained by the predator inspection behaviour. The increase in FCM concentrations during culpeo treatment can be linked to the adaptive mobilisation of energy to execute antipredator responses to increase survival chances.

14.
Pharmacol Res Perspect ; 9(4): e00784, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34176244

RESUMO

Myocardial ischemia continues to be the first cause of morbimortality in the world; the definitive treatment is reperfusion; however, this action causes additional damage to ischemic myocardial tissue; this forces to seek therapies of cardioprotection to reduce this additional damage. There are many cardioprotective agents; within these, cannabinoids have shown to have beneficial effects, mainly cannabidiol (CBD). CBD is a non psychoactive cannabinoid. To evaluate the effect in experimental models of CBD in myocardial ischemia reperfusion in rats, twelve-week-old male rats have been used. The animals were divides in 3 groups: control(C), ischemia reperfusion (IR) and CBD pretreatment (1/day/5mg/kg /10days). Langendorff organ isolate studies were performed, and the area of infarction was assessed with triphenyl tetrazolium, in addition to molecular analysis of AT1 and AT2 receptors and Akt and Erk proteins and their phosphorylated forms related to RISK pathways. It was observed that there is an improvement with the use of CBD increasing inotropism and cardiac lusitropism, improving considerably the cardiovascular functionality. These could be related to the reduction of the area of infarction and activation of the AT2 receptor and the RISK pathway with absence of activation of the AT2 receptor (these could relate the reduction of the infarct area and the restoration of cardiovascular function with the activation of the AT2 receptor and the RISK pathway with the absence of activation of the AT2 receptor). The use of cannabinoids was shown to have beneficial effects when used as a treatment for myocardial reperfusion damage.


Assuntos
Canabidiol/uso terapêutico , Cardiotônicos/uso terapêutico , Traumatismo por Reperfusão Miocárdica/tratamento farmacológico , Animais , Canabidiol/farmacologia , Cardiotônicos/farmacologia , Coração/fisiologia , Hemodinâmica , Técnicas In Vitro , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Masculino , Traumatismo por Reperfusão Miocárdica/metabolismo , Traumatismo por Reperfusão Miocárdica/fisiopatologia , Fosfatidilinositol 3-Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Ratos Wistar , Receptor Tipo 1 de Angiotensina/metabolismo , Receptor Tipo 2 de Angiotensina/metabolismo , Função Ventricular Esquerda/efeitos dos fármacos
15.
Salud Publica Mex ; 52(1): 14-22, 2010.
Artigo em Espanhol | MEDLINE | ID: mdl-20464249

RESUMO

OBJECTIVE: To identify the relationship between stimulation at home and motor development among 36 month-old children. MATERIALS AND METHODS: The development of gross and fine motor skills of 169 infants (50.9% boys and 49.1% girls) was assessed at the age of 36 months with the Peabody Developmental Motor Scale. The quality of home stimulation was determined during a prior evaluation (at 30 months) by means of the HOME Scale. RESULTS: Total stimulation at home was significantly associated with better performance in the gross and fine motor areas. Particular aspects of this home stimulation were related to better gross and fine motor functions. CONCLUSION: Static balance and locomotion (gross motor skills) and grasping and visual-motor integration (fine motor skills) are associated with particular aspects of home stimulation, such as parent-child interaction, verbal reinforcement of the child's positive actions and providing the child with clear boundaries.


Assuntos
Desenvolvimento Infantil , Educação Infantil , Destreza Motora , Adulto , Desenvolvimento Infantil/fisiologia , Pré-Escolar , Estudos de Coortes , Feminino , Força da Mão/fisiologia , Humanos , Locomoção/fisiologia , Masculino , México , Destreza Motora/fisiologia , Testes Neuropsicológicos , Relações Pais-Filho , Equilíbrio Postural/fisiologia , Desempenho Psicomotor/fisiologia , Reforço Psicológico , Meio Social
16.
J Ophthalmol ; 2020: 9638763, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32908689

RESUMO

OBJECTIVE: In the pathogenesis of pterygium, the protective role of glutathione and nitric oxide production is unclear. These are important factors for homeostasis in the redox state of cells. The aim of this study was to determine the levels of these and related parameters in pterygium tissue. Patients and Methods. The study sample consisted of 120 patients diagnosed with primary or recurrent pterygium. Five groups of tissue samples were examined: control, primary pterygium, recurrent pterygium, and two groups of primary pterygium given a one-month NAC presurgery treatment (topical or systemic). The levels of endothelial nitric oxide synthase (eNOS), nitric oxide (NO), 3-nitrotyrosine (3NT), reduced and oxidized glutathione (GSH and GSSG), and catalase (CAT) were evaluated in tissue homogenates. RESULTS: Compared with the control, decreased levels of eNOS, NO, and 3-nitrotyrosine as well as the degree of oxidation of GSH (GSSG%) were observed in primary and recurrent pterygium. 3-Nitrotyrosine and GSSG% were reduced in the other pterygium groups. GSH and CAT were enhanced in recurrent pterygium and systemic-treated primary pterygium but were unchanged for topical-treated primary pterygium. There was a strong positive correlation of eNOS with NO and 3NT, GSSG% with NO and 3NT, and GSH with GSSG and CAT. Women showed a higher level of GSH and catalase in primary pterygium, whereas a lower level of GSH and a higher level of NO in recurrent pterygium. CONCLUSION: The results are congruent with the following proposed sequence of events leading to a protective response of the organism during the pathogenesis of primary pterygium: a decreased level of eNOS provokes a decline in the level of NO in pterygium tissue, which then leads to reduced S-nitrosylation of GSH or other thiols and possibly to the modulation of the intracellular level of GSH through synthesis and/or mobilization from other tissues.

17.
J Vis Exp ; (153)2019 11 14.
Artigo em Inglês | MEDLINE | ID: mdl-31789315

RESUMO

Statistical shape analysis of brain structures has been used to investigate the association between their structural changes and pathological processes. We have developed a software package for accurate and robust shape modeling and group-wise analysis. Here, we introduce an pipeline for the shape analysis, from individual 3D shape modeling to quantitative group shape analysis. We also describe the pre-processing and segmentation steps using open software packages. This practical guide would help researchers save time and effort in 3D shape analysis on brain structures.


Assuntos
Encéfalo/diagnóstico por imagem , Processamento de Imagem Assistida por Computador/métodos , Imageamento Tridimensional/métodos , Imageamento por Ressonância Magnética/métodos , Algoritmos , Humanos
18.
Medicentro (Villa Clara) ; 27(3)sept. 2023.
Artigo em Espanhol | LILACS | ID: biblio-1514487

RESUMO

Introducción: Las anomalías congénitas renales y de las vías urinarias constituyen la principal causa de enfermedad renal crónica en la edad pediátrica. Su etiología es multifactorial. Intervienen factores maternos, genéticos y ambientales. En Cuba, las afecciones congénitas del riñón y las vías urinarias constituyen una latente preocupación y aunque se ha incrementado el diagnóstico prenatal de las mismas, el número de pacientes diagnosticados es alto. Objetivo: Contribuir al conocimiento de la comunidad científica en relación con los factores de riesgo asociados a las anomalías del desarrollo renal. Métodos: Se realizó una revisión sistemática de la literatura médica disponible en las bases de datos Ebsco, SciELO, Scopus, Pubmed, revistas de nefrología pediátrica, pediatría, genética y teratología; y en la red social académica: Researchgate. Se accedió, durante los últimos cinco años, a varios artículos publicados en español y en inglés. Se utilizaron los descriptores Congenital anomalies of the kidney and urinary tract, hydronephrosis, risk factors, prenatal diagnosis, congenital abnormalities. Conclusiones: La presencia de la diabetes, desde la etapa preconcepcional y durante las primeras semanas del embarazo, la obesidad, las dietas maternas bajas en proteínas, y las alteraciones de la fertilidad, se asocian a las anomalías del desarrollo renal. Existen factores de riesgo específicos para determinados tipos de defectos congénitos renales y de las vías urinarias. No se considera, que el consumo del ácido fólico tenga un papel protector sobre las alteraciones de la embriogénesis renal, por lo que se recomienda ser cauteloso con la dosis que se administra a las embarazadas.


Introduction: congenital renal and urinary tract anomalies are the main cause of chronic kidney disease in children. Its etiology is multifactorial. Maternal, genetic and environmental factors are involved. In Cuba, congenital renal and urinary tract affections constitute a latent concern, and although their prenatal diagnoses have increased, the number of diagnosed patients is high. Objective: to contribute to the knowledge of the scientific community in relation to the risk factors associated with renal developmental anomalies. Methods: a systematic review of the available medical literature was carried out in Ebsco, SciELO, Scopus and Pubmed databases, in pediatric nephrology, pediatrics, genetics, and teratology journals as well as in the academic social network: Researchgate. Several articles published in Spanish and English languages were accessed during the last five years. The used descriptors were congenital anomalies of the kidney and urinary tract, hydronephrosis, risk factors, prenatal diagnosis and congenital abnormalities. Conclusions: the presence of diabetes, from the preconceptional stage and during the first weeks of pregnancy, obesity, maternal diets low in protein, and fertility disorders, are associated with renal developmental anomalies. There are specific risk factors for certain types of kidney and urinary tract birth defects. It is not considered that the consumption of folic acid has a protective role on the alterations of renal embryogenesis, so it is recommended to be cautious with the dose administered to pregnant women.


Assuntos
Diagnóstico Pré-Natal , Anormalidades Congênitas , Anormalidades Urogenitais , Fatores de Risco , Hidronefrose
19.
Rev. habanera cienc. méd ; 21(6)dic. 2022.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1560072

RESUMO

Introducción: La COVID-19 es una enfermedad con brechas en su conocimiento. Se requiere explorar sus manifestaciones clínicas en el tiempo y consecuencias para el desempeño en la población trabajadora. Objetivo: Identificar características clínica-epidemiológicas y aptitud para el trabajo en trabajadores de la salud convalecientes de la COVID-19. Material y Métodos: Se realizó un estudio longitudinal prospectivo con trabajadores de la salud de La Habana. La población estuvo constituida por 40 trabajadores, quienes acudieron a consulta de convalecientes de la COVID-19 en mayo de 2021, a los que se les dio seguimiento hasta mayo de 2022. Resultados: Persistieron al cierre del año, la disnea (18,8 %), insomnio (18,8 %), artralgia (12,5 %). La hipertensión arterial, obesidad y asma bronquial fueron las principales comorbilidades. Aptos para el puesto trabajo, 100 % de los trabajadores. Conclusiones: Los síntomas postCOVID-19 disminuyeron considerablemente a partir de los 8 meses del inicio de la enfermedad y persistieron la disnea, artralgia e insomnio al cierre del año.


Introduction: COVID-19 is a disease with gaps in its knowledge. It is required to explore its clinical manifestations over time and consequences for performance in the working population. Objective: To identify the clinico-epidemiological characteristics and the fitness to work in health workers convalescing from COVID-19. Material and Methods: A prospective longitudinal study was carried out on health workers in Havana. The population consisted of 40 workers who attended the COVID-19 convalescent consultation and were followed up in May 2022. Results: Dyspnea (18.8 %), insomnia (18.8 %), and arthralgia (12.5 %) persisted at the end of the year. Hypertension, obesity and bronchial asthma were the main comorbidities. In addition, 100 % of workers were fit for work. Conclusions: PostCOVID-19 symptoms deceased considerably 8 months after the onset of the disease; dyspnea, arthralgia, and insomnia persisted at the end of the year.

20.
Life Sci Soc Policy ; 13(1): 6, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28447286

RESUMO

The aim of this manuscript is to highlight that from the phenomenology and psychoanalysis point of view, the meaning of the notion of the body is different from the medical biologicist discourse. In psychoanalysis, the body is an erogenized body. It is constituted as an object for another self. Similarly, in phenomenology, the body is an own body in first instance. It is the body of a self, rather than a living body and a material body. Both positions enable us to understand how this conceptualization of the body is essential in any human field. Especially in the clinic, the position of the subject before the other will lead to a specific form of intervention. From this understanding of the human body, both phenomenology and psychoanalysis confirm that the biologicist understanding of the body, presumed by all psychological and medical practices, is insufficient.


Assuntos
Corpo Humano , Psicanálise , Autoimagem , Formação de Conceito , Humanos
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