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1.
An Acad Bras Cienc ; 96(3): e20231343, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38896742

RESUMEN

Arapaima gigas, an emblematic species of the Amazon region and a longstanding primary fishing resource, currently holds a "Data Deficient" status on the International Union for Conservation of Nature Red List, and is listed as an endangered species in Brazil. The Tocantins River is the most extensively modified large tributary of the Amazon Basin, and thus can affect the dynamics of ichthyofaunal populations. Over a period of 1 year, representatives of the fishing communities and fishermen from 25 fishing communities from four municipalities in the lower Tocantins River region were interviewed, and the obtained information was evaluated based on the literature to survey the population abundance status of A. gigas in the region and its impact on local communities. Among the fishermen interviewed, only one reported still encountering and fishing A. gigas on Jaracuera Island. The disappearance of A. gigas in the region are viewed as having economically disastrous consequences for the residents. Additionally, other endemic fish species are no longer observed in this locality either. If fishery management officials do not work together with local communities, A. gigas could disappear from the northern region of Brazil, where information on the dynamics of A. gigas fishing is lacking.


Asunto(s)
Conservación de los Recursos Naturales , Explotaciones Pesqueras , Ríos , Brasil , Animales , Explotaciones Pesqueras/estadística & datos numéricos , Peces/clasificación , Dinámica Poblacional , Densidad de Población , Especies en Peligro de Extinción , Humanos
2.
An Acad Bras Cienc ; 94(suppl 3): e20211394, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36197363

RESUMEN

The characteristics of milk are controlled by several genes, with emphasis on the four genes from casein, CSN1S1; CSN1S2; CSN2 and CSN3, which are responsible encoding of fractions the milk protein. The study of genetic variants in these genes, seek to investigate alleles, insertions or deletions, that can directly reflect on productive characteristics, indicating differences in milk quality, composition and yield. The CSN1S1 and CSN3 genes were analyzed in lactating Murrah buffaloes using nucleotide sequencing. An SNP was found in the amplified fragment of the CSN1S1 gene, located in nucleotide number 2,123 of the promoter region in position nt-258 (A/G). As for the CSN3 gene, two SNPs of exon number 4 were identified in codons 33 (ACC/ATC) and 34 (ACC/ACT) of the analyzed fragment. This study contributes to important associations between genetic variants and the desired characteristics of milk and its derivatives in future studies, because the variants found may be associated with the quality of milk, enabling genetic selection to be assisted by molecular markers, indicating a major advance that makes it possible to select animals early.


Asunto(s)
Búfalos , Caseínas , Animales , Brasil , Búfalos/genética , Caseínas/genética , Femenino , Lactancia , Proteínas de la Leche/genética , Nucleótidos
3.
Trop Anim Health Prod ; 54(6): 356, 2022 Oct 21.
Artículo en Inglés | MEDLINE | ID: mdl-36269471

RESUMEN

In this study, we evaluated the main risk factors for the occurrence of bovine mastitis, in the southeastern of Pará, in the Brazilian Amazon. We surveyed 91 dairy farmers to identify management practices and bovine breed characteristics. From each farm, 50 mL of milk sample was collected for microbiological analysis and somatic cell count (SCC). Depending on the management practices and breed, a logit model was used to determine the odds ratio of subclinical mastitis (SCM) occurrence. In irrigated pastures, an SCM-associated risk factor, the occurrence of SCM was 5.03 times higher than that in the non-irrigated pastures. Similarly, in Girolando breed herds, the occurrence of SCM increased by 5.8 times compared to the crossbred herds. Moreover, the occurrence of mastitis was 33 times higher in farms using common cloths for drying teats than in farms using paper towels. Therefore, adoption of better management practices can lead to SCC reduction, milk quality improvement and a guarantee to contain SCC within prescribed Brazilian limits for the Amazon region.


Asunto(s)
Enfermedades de los Bovinos , Mastitis Bovina , Animales , Bovinos , Femenino , Recuento de Células/veterinaria , Industria Lechera , Mastitis Bovina/epidemiología , Mastitis Bovina/microbiología , Leche/microbiología , Prevalencia , Factores de Riesgo , Brasil
4.
An Acad Bras Cienc ; 93(4): e20190949, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34586312

RESUMEN

Given the growing use of alternative sources of protein, studies on the commercial viability of amazonians wild species, based on the yield of their carcass, are still scarce in the literature. To evaluate yields of carcass and commercial cuts of caiman meat (Caiman crocodilus yacare), according to sex and weight categories, besides analyzing their revenue. Thirty animals in termination phase were selected, separated by sex and weighed. The cuts analyzed was of 59.7% in relation to total live weight, and of 70.7% in relation to the carcass. Regarding the yields of the cuts, the average weight difference in detriment to the sex of the animals was minimal, however, in the weight categories, animals classified as intermediate and heavy (5.9-9.1 kg) resulted in higher cut weights (p < 0.01) and consequently in revenue for most of the meat cuts (66.7%), especially for tail, back, and sirloin fillets. It can be concluded that the carcass yield of caiman is high, and that heavy animals resulted in higher yields of prime cuts, emphasizing the need to carry out studies that prioritize the cost/benefit ratio taking into account the age and weight of the animals.


Asunto(s)
Caimanes y Cocodrilos , Animales , Brasil , Granjas , Carne/análisis
7.
Biochim Biophys Acta ; 1862(9): 1827-38, 2016 09.
Artículo en Inglés | MEDLINE | ID: mdl-27373419

RESUMEN

Resveratrol, a polyphenol found in grapes and red wine, exhibits antioxidant, anti-inflammatory, anti-aging and, neuroprotective effects. Resveratrol also plays a significant role modulating glial functionality, protecting the health of neuroglial cells against several neuropsychiatric in vivo and in vitro experimental models. Mitochondrial impairment strongly affected astrocyte functions and consequently brain homeostasis. Molecules that promote astrocyte mitochondrial protection are fundamental to maintain brain energy balance and cellular redox state, contributing to brain healthy. Thus, the present study was designed to evaluate some glioprotective mechanisms of resveratrol against mitochondrial damage promoted by azide exposure in hippocampal primary astrocyte cultures. Azide treatment provoked deleterious effects, including the dysfunction of mitochondria, the deterioration of redox homeostasis, the augmentation of pro-inflammatory cytokines and impairment of glutamate uptake activity. However, resveratrol prevented these effects, protecting hippocampal astrocytes against azide-induced cytotoxicity through the heme-oxygenase-1 (HO-1) pathway and inhibiting p38 mitogen-activated protein kinase (p38 MAPK) and nuclear factor kappa B (NFκB) activation. Resveratrol also protected astrocytes via phosphatidylinositide 3-kinase (PI3K)/Akt. These results contribute to the comprehension of the mechanisms by which resveratrol mediates hippocampal astrocyte protection against mitochondrial failure and implicate resveratrol as an important glioprotective molecule.


Asunto(s)
Astrocitos/efectos de los fármacos , Astrocitos/metabolismo , Fármacos Neuroprotectores/farmacología , Resveratrol/farmacología , Animales , Antioxidantes/metabolismo , Antioxidantes/farmacología , Células Cultivadas , Ácido Glutámico/metabolismo , Glutatión/metabolismo , Hemo Oxigenasa (Desciclizante)/metabolismo , Hipocampo/citología , Hipocampo/efectos de los fármacos , Hipocampo/metabolismo , Masculino , Mitocondrias/efectos de los fármacos , Mitocondrias/metabolismo , Modelos Neurológicos , FN-kappa B/metabolismo , Estrés Nitrosativo/efectos de los fármacos , Estrés Oxidativo/efectos de los fármacos , Fosfatidilinositol 3-Quinasas/metabolismo , Ratas , Ratas Wistar , Transducción de Señal/efectos de los fármacos , Azida Sódica/toxicidad , Proteínas Quinasas p38 Activadas por Mitógenos/metabolismo
8.
Neurochem Res ; 41(9): 2190-8, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-27161368

RESUMEN

Hyperornithinemia-hyperammonemia-homocitrullinuria (HHH) syndrome is caused by deficiency of ornithine translocase leading to predominant tissue accumulation and high urinary excretion of ornithine (Orn), homocitrulline (Hcit) and ammonia. Although affected patients commonly present neurological dysfunction manifested by cognitive deficit, spastic paraplegia, pyramidal and extrapyramidal signs, stroke-like episodes, hypotonia and ataxia, its pathogenesis is still poorly known. Although astrocytes are necessary for neuronal protection. Therefore, in the present study we investigated the effects of Orn and Hcit on cell viability (propidium iodide incorporation), mitochondrial function (thiazolyl blue tetrazolium bromide-MTT-reduction and mitochondrial membrane potential-ΔΨm), antioxidant defenses (GSH) and pro-inflammatory response (NFkB, IL-1ß, IL-6 and TNF-α) in unstimulated and menadione-stressed cortical astrocytes that were previously shown to be susceptible to damage by neurotoxins. We first observed that Orn decreased MTT reduction, whereas both amino acids decreased GSH levels, without altering cell viability and the pro-inflammatory factors in unstimulated astrocytes. Furthermore, Orn and Hcit decreased cell viability and ΔΨm in menadione-treated astrocytes. The present data indicate that the major compounds accumulating in HHH syndrome impair mitochondrial function and reduce cell viability and the antioxidant defenses in cultured astrocytes especially when stressed by menadione. It is presumed that these mechanisms may be involved in the neuropathology of this disease.


Asunto(s)
Astrocitos/efectos de los fármacos , Citrulina/análogos & derivados , Mitocondrias/efectos de los fármacos , Ornitina/farmacología , Sistemas de Transporte de Aminoácidos Básicos/efectos de los fármacos , Animales , Antioxidantes/metabolismo , Antioxidantes/farmacología , Astrocitos/metabolismo , Muerte Celular/efectos de los fármacos , Citrulina/farmacología , Hiperamonemia/tratamiento farmacológico , Hiperamonemia/metabolismo , Masculino , Mitocondrias/metabolismo , Ornitina/deficiencia , Ornitina/metabolismo , Ratas Wistar , Factor de Necrosis Tumoral alfa/metabolismo , Trastornos Innatos del Ciclo de la Urea/tratamiento farmacológico , Trastornos Innatos del Ciclo de la Urea/metabolismo
9.
Isr Med Assoc J ; 18(3-4): 183-7, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27228640

RESUMEN

Autoimmune rheumatic diseases (ARD) affect mainly young women during their reproductive years. Fertility is usually not diminished but the time it takes to conceive is usually longer. Factors related to an ARD or to its treatment are responsible for this effect. In addition, contraception counseling is required to prevent negative fetal outcome and exacerbation of disease symptoms. In recent years, advances in therapies, clarification of risk factors for adverse pregnancy outcomes, and a multidisciplinary approach have vastly improved obstetric management, increasing the possibility of successful pregnancy with a high likelihood of favorable outcome.


Asunto(s)
Enfermedades Autoinmunes , Anticoncepción/métodos , Infertilidad , Efectos Tardíos de la Exposición Prenatal , Enfermedades Reumáticas , Adaptación Psicológica , Enfermedades Autoinmunes/complicaciones , Enfermedades Autoinmunes/fisiopatología , Enfermedades Autoinmunes/psicología , Manejo de la Enfermedad , Progresión de la Enfermedad , Femenino , Humanos , Infertilidad/etiología , Infertilidad/fisiopatología , Embarazo , Complicaciones del Embarazo/fisiopatología , Complicaciones del Embarazo/psicología , Resultado del Embarazo , Efectos Tardíos de la Exposición Prenatal/etiología , Efectos Tardíos de la Exposición Prenatal/prevención & control , Salud Reproductiva , Enfermedades Reumáticas/complicaciones , Enfermedades Reumáticas/fisiopatología , Enfermedades Reumáticas/psicología
10.
Mol Cell Biochem ; 388(1-2): 277-86, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24370728

RESUMEN

Diabetes mellitus (DM) is associated with brain alterations that may contribute to cognitive dysfunctions. Chlorogenic acid (CGA) and caffeine (CA), abundant in coffee (CF), are natural compounds that have showed important actions in the brain. The present study aimed to evaluate the effect of CGA, CA, and CF on acetylcholinesterase (AChE), Na(+), K(+)-ATPase, aminolevulinate dehydratase (δ-ALA-D) activities and TBARS levels from cerebral cortex, as well as memory and anxiety in streptozotocin-induced diabetic rats. Animals were divided into eight groups (n = 5-10): control; control/CGA 5 mg/kg; control/CA 15 mg/kg; control/CF 0.5 g/kg; diabetic; diabetic/CGA 5 mg/kg; diabetic/CA 15 mg/kg; and diabetic/CF 0.5 g/kg. Our results demonstrated an increase in AChE activity and TBARS levels in cerebral cortex, while δ-ALA-D and Na(+), K(+)-ATPase activities were decreased in the diabetic rats when compared to control water group. Furthermore, a memory deficit and an increase in anxiety in diabetic rats were observed. The treatment with CGA and CA prevented the increase in AChE activity in diabetic rats when compared to the diabetic water group. CGA, CA, and CF intake partially prevented cerebral δ-ALA-D and Na(+), K(+)-ATPase activity decrease due to diabetes. Moreover, CGA prevented diabetes-induced TBARS production, improved memory, and decreased anxiety. In conclusion, among the compounds studied CGA proved to be a compound which acts better in the prevention of brain disorders promoted by DM.


Asunto(s)
Conducta Animal/efectos de los fármacos , Cafeína/farmacología , Ácido Clorogénico/farmacología , Café , Diabetes Mellitus Experimental/tratamiento farmacológico , Acetilcolinesterasa/biosíntesis , Animales , Ansiedad/tratamiento farmacológico , Peso Corporal/efectos de los fármacos , Corteza Cerebral/metabolismo , Masculino , Memoria/efectos de los fármacos , Trastornos de la Memoria/tratamiento farmacológico , Porfobilinógeno Sintasa/biosíntesis , Ratas , Ratas Wistar , ATPasa Intercambiadora de Sodio-Potasio/biosíntesis , Estreptozocina , Sustancias Reactivas al Ácido Tiobarbitúrico/metabolismo
11.
Cell Biochem Funct ; 32(3): 287-93, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-24301255

RESUMEN

We investigated the efficacy of rosmarinic acid (RA) in preventing lipid peroxidation and increased activity of acetylcholinesterase (AChE) in the brain of streptozotocin-induced diabetic rats. The animals were divided into six groups (n = 8): control, ethanol, RA 10 mg/kg, diabetic, diabetic/ethanol and diabetic/RA 10 mg/kg. After 21 days of treatment with RA, the cerebral structures (striatum, cortex and hippocampus) were removed for experimental assays. The results demonstrated that the treatment with RA (10 mg/kg) significantly reduced the level of lipid peroxidation in hippocampus (28%), cortex (38%) and striatum (47%) of diabetic rats when compared with the control. In addition, it was found that hyperglycaemia caused significant increased in the activity of AChE in hippocampus (58%), cortex (46%) and striatum (30%) in comparison with the control. On the other hand, the treatment with RA reversed this effect to the level of control after 3 weeks. In conclusion, the present findings showed that treatment with RA prevents the lipid peroxidation and consequently the increase in AChE activity in diabetic rats, demonstrating that this compound can modulate cholinergic neurotransmission and prevent damage oxidative in brain in the diabetic state. Thus, we can suggest that RA could be a promising compound in the complementary therapy in diabetes.


Asunto(s)
Acetilcolinesterasa/metabolismo , Antioxidantes/farmacología , Encéfalo/metabolismo , Cinamatos/farmacología , Depsidos/farmacología , Diabetes Mellitus Experimental/metabolismo , Peroxidación de Lípido/efectos de los fármacos , Animales , Diabetes Mellitus Experimental/inducido químicamente , Masculino , Ratas , Ratas Wistar , Estreptozocina , Ácido Rosmarínico
12.
Front Immunol ; 14: 1146817, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36969246

RESUMEN

Objectives: Idiopathic inflammatory myopathies (IIM) are a group of rare disorders that can affect the heart. This work aimed to find predictors of cardiac involvement in IIM. Methods: Multicenter, open cohort study, including patients registered in the IIM module of the Rheumatic Diseases Portuguese Register (Reuma.pt/Myositis) until January 2022. Patients without cardiac involvement information were excluded. Myo(peri)carditis, dilated cardiomyopathy, conduction abnormalities, and/or premature coronary artery disease were considered. Results: 230 patients were included, 163 (70.9%) of whom were females. Thirteen patients (5.7%) had cardiac involvement. Compared with IIM patients without cardiac involvement, these patients had a lower bilateral manual muscle testing score (MMT) at the peak of muscle weakness [108.0 ± 55.0 vs 147.5 ± 22.0, p=0.008] and more frequently had oesophageal [6/12 (50.0%) vs 33/207 (15.9%), p=0.009] and lung [10/13 (76.9%) vs 68/216 (31.5%), p=0.001] involvements. Anti-SRP antibodies were more commonly identified in patients with cardiac involvement [3/11 (27.3%) vs 9/174 (5.2%), p=0.026]. In the multivariate analysis, positivity for anti-SRP antibodies (OR 104.3, 95% CI: 2.5-4277.8, p=0.014) was a predictor of cardiac involvement, regardless of sex, ethnicity, age at diagnosis, and lung involvement. Sensitivity analysis confirmed these results. Conclusion: Anti-SRP antibodies were predictors of cardiac involvement in our cohort of IIM patients, irrespective of demographical characteristics and lung involvement. We suggest considering frequent screening for heart involvement in anti-SRP-positive IIM patients.


Asunto(s)
Miocarditis , Miositis , Enfermedades Reumáticas , Femenino , Humanos , Masculino , Estudios de Cohortes , Corazón
13.
Clin Rheumatol ; 42(8): 2125-2134, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37154983

RESUMEN

INTRODUCTION/OBJECTIVES: The study aims to define the clinical and subclinical calcinosis prevalence, the sensitivity of radiographed site and clinical method for its diagnosis, and the phenotype of Portuguese systemic sclerosis (SSc) patients with calcinosis. METHOD: A cross-sectional multicenter study was conducted with SSc patients fulfilling Leroy/Medsger 2001 or ACR/EULAR 2013 classification criteria, registered in the Reuma.pt. Calcinosis was assessed through clinical examination and radiographs of hands, elbows, knees, and feet. Independent parametric or non-parametric tests, multivariate logistic regression, and sensitivity calculation of radiographed site and clinical method for calcinosis detection were performed. RESULTS: We included 226 patients. Clinical calcinosis was described in 63 (28.1%) and radiological calcinosis in 91 (40.3%) patients, of which 37 (40.7%) were subclinical. The most sensitive location to detect calcinosis was the hand (74.7%). Sensitivity of the clinical method was 58.2%. Calcinosis patients were more often female (p = 0.008) and older (p < 0.001) and had more frequently longer disease duration (p < 0.001), limited SSc (p = 0.017), telangiectasia (p = 0.039), digital ulcers (p = 0.001), esophageal (p < 0.001) and intestinal (p = 0.003) involvements, osteoporosis (p = 0.028), and late capillaroscopic pattern (p < 0.001). In multivariate analysis, digital ulcers (OR 2.63, 95% CI 1.02-6.78, p = 0.045) predicted overall calcinosis, esophageal involvement (OR 3.52, 95% CI 1.28-9.67, p = 0.015) and osteoporosis (OR 4.1, 95% CI 1.2-14.2, p = 0.027) predicted hand calcinosis, and late capillaroscopic pattern (OR 7.6, 95% CI 1.7-34.9, p = 0.009) predicted knee calcinosis. Anti-nuclear antibody positivity was associated with less knee calcinosis (OR 0.021, 95% CI 0.001-0477, p = 0.015). CONCLUSIONS: Subclinical calcinosis high prevalence suggests that calcinosis is underdiagnosed and radiographic screening might be relevant. Multifactorial pathogenesis may explain calcinosis predictors' variability. Key Points • Prevalence of subclinical calcinosis in SSc patients is substantial. • Hand radiographs are more sensitive to detect calcinosis than other locations or clinical method. • Digital ulcers were associated with overall calcinosis, esophageal involvement and osteoporosis were associated with hand calcinosis, and late sclerodermic pattern in nailfold capillaroscopy was associated with knee calcinosis. • Anti-nuclear antibody positivity may be a protective factor for knee calcinosis.


Asunto(s)
Calcinosis , Osteoporosis , Esclerodermia Sistémica , Femenino , Humanos , Estudios Transversales , Portugal , Calcinosis/complicaciones , Calcinosis/diagnóstico por imagen , Osteoporosis/complicaciones
14.
ARP Rheumatol ; 2(3): 188-199, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37728117

RESUMEN

AIMS: To characterise the idiopathic inflammatory myopathies (IIM) module of the Rheumatic Diseases Portuguese Register (Reuma.pt/myositis) and the patients in its cohort. METHODS: Reuma.pt is a web-based system with standardised patient files gathered in a registry. This was a multicentre open cohort study, including patients registered in Reuma.pt/myositis up to January 2022. RESULTS: Reuma.pt/myositis was designed to record all relevant data in clinical practice and includes disease-specific diagnosis and classification criteria, clinical manifestations, immunological data, and disease activity scores. Two hundred eighty patients were included, 71.4% female, 89.4% Caucasian, with a median age at diagnosis and disease duration of 48.9 (33.6-59.3) and 5.3 (3.0-9.8) years. Patients were classified as having definite (N=57/118, 48.3%), likely (N=23/118, 19.5%), or possible (N=2/118, 1.7%) IIM by 2017 EULAR/ACR criteria. The most common disease subtypes were dermatomyositis (DM, N=122/280, 43.6%), polymyositis (N=59/280, 21.1%), and myositis in overlap syndromes (N=41/280, 14.6%). The most common symptoms were proximal muscle weakness (N=180/215, 83.7%) and arthralgia (N=127/249, 52.9%), and the most common clinical signs were Gottron's sign (N=75/184, 40.8%) and heliotrope rash (N=101/252, 40.1%). Organ involvement included lung (N=78/230, 33.9%) and heart (N=11/229, 4.8%) involvements. Most patients expressed myositis-specific (MSA, N=158/242, 65.3%) or myositis-associated (MAA, 112/242, 46.3%) antibodies. The most frequent were anti-SSA/SSB (N=70/231, 30.3%), anti-Jo1 (N=56/236, 23.7%), and anti-Mi2 (N=31/212, 14.6%). Most patients had a myopathic pattern on electromyogram (N=101/138, 73.2%), muscle oedema in magnetic resonance (N=33/62, 53.2%), and high CK (N=154/200, 55.0%) and aldolase levels (N=74/135, 54.8%). Cancer was found in 11/127 patients (8.7%), most commonly breast cancer (N=3/11, 27.3%). Most patients with cancer-associated myositis had DM (N=8/11, 72.7%) and expressed MSA (N=6/11) and/or MAA (N=3/11). The most used drugs were glucocorticoids (N=201/280, 71.8%), methotrexate (N=117/280, 41.8%), hydroxychloroquine (N=87/280, 31.1%), azathioprine (N=85/280, 30.4%), and mycophenolate mofetil (N=56/280, 20.0%). At the last follow-up, there was a median MMT8 of 150 (142-150), modified DAS skin of 0 (0-1), global VAS of 10 (0-50) mm, and HAQ of 0.125 (0.000-1.125). CONCLUSIONS: Reuma.pt/myositis adequately captures the main features of inflammatory myopathies' patients, depicting, in this first report, a heterogeneous population with frequent muscle, joint, skin, and lung involvements.

16.
Cell Biochem Funct ; 30(4): 286-92, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22223394

RESUMEN

α-Tocopherol (α-Toc) is involved in various physiologic processes, which present antioxidant and neuroprotective properties. High-fat diets have an important role in neurodegenerative diseases and neurological disturbances. This study aimed to investigate the effects of treatment with α-Toc and the consumption of high-fat diets on ectonucleotidase activities in synaptosomes of cerebral cortex, hippocampus and striatum of rats. Animals were divided into four different groups, which received standard diet (control), high-fat saturated diet (HF), α-Toc and high-fat saturated diet plus α-Toc (α-Toc + HF). High-fat saturated diet was administered ad libitum and α-Toc by gavage using a dose of 50 mg·kg(-1). After 3 months of treatment, animals were submitted to euthanasia, and cerebral cortex, hippocampus and striatum were collected for biochemical assays. Results showed that adenosine triphosphate (ATP), adenosine diphosphate (ADP) and adenosine monophosphate (AMP) hydrolysis in the cerebral cortex, hippocampus and striatum were decreased in HF in comparison to the other groups (P < 0·05). When rats that received HF were treated with α-Toc, the activity of the ectonucleotidases was similar to the control. ATP, ADP and AMP hydrolysis in the cerebral cortex, hippocampus and striatum were increased in the α-Toc group when compared with the other groups (P < 0·05). These findings demonstrated that the HF alters the purinergic signaling in the nervous system and that the treatment with α-Toc was capable of modulating the adenine nucleotide hydrolysis in this experimental condition.


Asunto(s)
Adenosina Trifosfatasas/metabolismo , Antioxidantes/farmacología , Dieta Alta en Grasa , Sinaptosomas/enzimología , alfa-Tocoferol/farmacología , Adenosina Difosfato/metabolismo , Adenosina Monofosfato/metabolismo , Adenosina Trifosfato/metabolismo , Animales , Corteza Cerebral/efectos de los fármacos , Corteza Cerebral/metabolismo , Cuerpo Estriado/efectos de los fármacos , Cuerpo Estriado/metabolismo , Hipocampo/efectos de los fármacos , Hipocampo/metabolismo , Hidrólisis , Ratas , Ratas Wistar , Receptores Purinérgicos/metabolismo , Sinaptosomas/efectos de los fármacos
17.
Clin Rheumatol ; 41(10): 2977-2986, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-35732984

RESUMEN

INTRODUCTION/OBJECTIVES: Recognising systemic lupus erythematosus (SLE) patients at higher risk for hospitalization, aiming at developing tailored management strategies, may help minimize admissions and improve long-term health outcomes. Our study aimed to identify predictors for hospitalization in patients with SLE. METHOD: Cohort study of SLE patients followed in a referral centre. All hospitalizations from study baseline up to 120 months were identified, and the primary indication for admission was categorized as follows: (1) SLE disease activity; (2); infection; and (3) other conditions. Demographic, clinical, and laboratory parameters at baseline were sought as predictors of hospitalization for (i) any cause, (ii) disease activity, and (iii) infection using survival analysis with Kaplan-Meier curves and log-rank tests. Potential predictors were further tested using multivariate Cox proportional hazards regression models. RESULTS: We included 398 patients (median follow-up: 120 months). The incidence rate of hospitalization was 17.7 per 100 patient-years. The most frequent indications for hospitalization were SLE disease activity (29.4%) and infection (23.4%). In multivariate analysis, male gender, age > 50 years, antiphospholipid antibodies positivity (aPL), SLEDAI-2 K > 5, organ damage, and prednisone daily dose (PDN) predicted hospitalization for any cause. SLEDAI-2 K > 5, aPL, PDN, and IS medication predicted hospitalization for active SLE. Male gender, prior biopsy-proven lupus nephritis, aPL, organ damage, and ongoing treatment with high-risk IS predicted hospitalization for infection. Treatment with antimalarials was associated with a lower risk of hospitalization for any cause and for infection. CONCLUSIONS: Positive aPL identifies SLE patients presenting a higher risk of hospitalization, while medication with antimalarials was associated with a lower risk. Key Points • Positive aPL is predictive of hospitalization for any medical condition, disease activity, and infection • Organ damage is predictive of hospitalization for any condition and infection • Antimalarials are predictive of a lower risk of hospitalization for any condition and infection.


Asunto(s)
Antimaláricos , Lupus Eritematoso Sistémico , Anticuerpos Antifosfolípidos , Antimaláricos/uso terapéutico , Estudios de Cohortes , Hospitalización , Humanos , Lupus Eritematoso Sistémico/complicaciones , Lupus Eritematoso Sistémico/tratamiento farmacológico , Lupus Eritematoso Sistémico/epidemiología , Masculino , Persona de Mediana Edad , Prednisona/uso terapéutico , Índice de Severidad de la Enfermedad
18.
Curr Res Food Sci ; 5: 1028-1037, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35769315

RESUMEN

This study evaluated the solubility profiles of quinoa grain proteins and applied a complete process for the isolation of its main protein fractions, namely: albumins, globulins, prolamins and glutelins, which corresponded to 26.96%, 41.3%, 1.7% and 23.16% of the total protein content, respectively. When these fractions were digested with pepsin followed by pancreatin, the degrees of hydrolysis achieved varied between 26.62% (for unheated globulin fraction) and 38.97% (for unheated glutelin), with casein reached 33.73% hydrolysis. After heating, the globulin hydrolysis degree increased to 34.7%, not significantly differing from casein. These results reflect its good susceptibility to hydrolysis by digestive enzymes, and this observation is reinforced with assays with pepsin, trypsin and chymotrypsin tested separately. Globulins, the largest protein fraction, showed promising results in additional assays regarding the amino acid profile, with limitation only for lysine in relation to the FAO standard, and the potential for releasing bioactive peptides after digestion. Although pepsin-digested globulin inhibited only 5% of ACE activity under the conditions tested, after 24h with the addition of pancreatin, the inhibition was 100%. Antioxidant activity (DPPH assay) also indicated very similar results, when hydrolysis with pepsin was inefficient in releasing antioxidant peptides, while hydrolysis by pancreatin led to 35 times greater results.

19.
Clin Rev Allergy Immunol ; 62(2): 346-353, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33725262

RESUMEN

The concern about the offspring's health is one of the reasons for a reduced family size of women with rheumatic diseases (RD). Increased risk of autoimmune diseases (AD) and neurodevelopmental disorders (ND) has been reported in children born to patients with RD. Within a nationwide survey about reproductive issues of women with RD, we aimed at exploring the long-term outcome of their children. By surveying 398 patients who received their diagnosis of RD during childbearing age (before the age of 45), information about the offspring were obtained from 230 women who declared to have had children. A total of 148 (64.3%) patients were affected by connective tissue diseases (CTD) and 82 (35.7%) by chronic arthritis. Data on 299 children (156 males, 52.1%; mean age at the time of interview 17.1 ± 9.7 years) were collected. Twelve children (4.0%), who were born to patients with CTD in 75% of the cases, were affected by AD (8 cases of celiac disease). Eleven children had a certified diagnosis of ND (3.6%; 6 cases of learning disabilities); 9 of them were born to mothers with CTD (5 after maternal diagnosis). No association was found between ND and prenatal exposure to either maternal autoantibodies or anti-rheumatic drugs. Absolute numbers of offspring affected by AD and ND were low in a multicentre cohort of Italian women with RD. This information can be helpful for the counselling about reproductive issues, as the health outcomes of the offspring might not be an issue which discourage women with RD from having children.


Asunto(s)
Antirreumáticos , Enfermedades Autoinmunes , Enfermedades Reumáticas , Antirreumáticos/uso terapéutico , Autoanticuerpos , Enfermedades Autoinmunes/epidemiología , Niño , Estudios de Cohortes , Femenino , Humanos , Masculino , Embarazo , Enfermedades Reumáticas/epidemiología
20.
Cureus ; 13(11): e19509, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-34912646

RESUMEN

Ankle tuberculosis is a relatively rare condition and may develop after hematogenous dissemination from the pulmonary origin, particularly in cases of immunosuppression. Both pregnancy and delivery are relatively immunosuppressive states, and immune modulations during these periods can contribute to the pathogenesis of disseminated tuberculosis. A 26-year-old mother presented with severe, continuous, and debilitating pain in the left ankle, lasting for three months after delivery and associated with fever. Inspection demonstrated ankle swelling and redness, with a cold and cyanotic forefoot. Ankle radiograph and musculoskeletal ultrasound evaluation were obtained. Tibiotalar joint arthrocentesis revealed purulent liquid suggestive of septic arthritis and an emergent arthroscopic washout of the ankle was performed. The synovial mycobacterial culture was posteriorly positive and the diagnosis established was both pulmonary and osteoarticular tuberculosis. A comprehensive rehabilitation program was then implemented to achieve maximum functional gains. This report presents a rare case of ankle tuberculosis diagnosed in the postpartum period. Early evaluation, treatment, and adequate rehabilitation interventions can be crucial to promote functionality and enhance the quality of life.

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