Zinc and thyroid cancer: A systematic review and meta-analysis protocol.

INTRODUCTION: The thyroid cancer has the ninth larger incidence of cancer in the world. Investigations related to the exposure to metals have become important due to the sensibility of the thyroid gland to them. Studies reveal that carcinogenic progressions are associated to the deficiency of the essential trace elements. In this context, the zinc is highlighted, essential for the metabolism of the thyroidal hormone and has a potential relation with the pathogenesis of the thyroid cancer. The objective of this systematic review and meta-analysis is to evaluate the low serum zinc as a risk factor for thyroid cancer in adults. METHODS AND ANALYSIS: PubMed/MEDLINE, Scopus, Embase and LILACS databases will be searched for observational studies investigating the low serum zinc as a risk factor for thyroid cancer in adults. No language or publication period restrictions will be imposed. The primary outcome will be that the low serum zinc is a risk factor for thyroid cancer. Three independent reviewers will select the studies and extract data from the original publications. The risk-of-bias will be assessed by using the Newcastle-Ottawa Quality Assessment Scale (NOS). Data synthesis will be performed using the R software (V.4.3.1) and to assess heterogeneity, we will compute the I2 statistic and the results will be based on either random-effects or fixed-effects models, depending on the heterogeneity. The Grading of Recommendations, Development, and Evaluation (GRADE) system will be used to evaluate the reliability and quality of evidence. PROSPERO REGISTRATION NUMBER: International Prospective Register of Systematic Reviews (PROSPERO) CRD42023463747.

Identification of NID1 as a novel candidate susceptibility gene for familial non-medullary thyroid carcinoma using whole-exome sequencing.

The genetics underlying non-syndromic familial non-medullary thyroid carcinoma (FNMTC) is still poorly understood. To identify susceptibility genes for FNMTC, we performed whole-exome sequencing (WES) in a Brazilian family affected by papillary thyroid carcinoma (PTC) in three consecutive generations. WES was performed in four affected and two unaffected family members. Manual inspection in over 100 previously reported susceptibility genes for FNMTC showed that no variants in known genes co-segregated with disease phenotype in this family. Novel candidate genes were investigated using PhenoDB and filtered using Genome Aggregation (gnomAD) and Online Archive of Brazilian Mutations (ABraOM) population databases. The missense variant p.Ile657Met in the NID1 gene was the only variant that co-segregated with the disease, while absent in unaffected family members and controls. The allele frequency for this variant was <0.0001 in the gnomAD and ABbraOM databases. In silico analysis predicted the variant to be deleterious or likely damaging to the protein function. Somatic mutations in NID1 gene were found in nearly 500 cases of different cancer subtypes in the intOGen platform. Immunohistochemistry analysis showed NID1 expression in PTC cells, while it was absent in normal thyroid tissue. Our findings were corroborated using data from the TCGA cohort. Moreover, higher expression of NID1 was associated with higher likelihood of relapse after treatment and N1b disease in PTCs from the TCGA cohort. Although replication studies are needed to better understand the role of this variant in the FNMTC susceptibility, the NID1 variant (c.1971T>G) identified in this study fulfills several criteria that suggest it as a new FNMTC predisposing gene.

Modulation of all-trans retinoic acid-induced MiRNA expression in neoplastic cell lines: a systematic review.

BACKGROUND: Cancer is a genetic and epigenetic disease that involves inactivation of tumor suppressor genes and activation of proto-oncogenes. All-trans retinoic acid (ATRA) is an isomer of retinoic acid involved in the onset of differentiation and apoptosis of a number of normal and cancer cells, functioning as an anti-cancer agent in several neoplasms. Ectopic changes in the expression of certain microRNAs (miRNAs) occur in response to ATRA, leading to phenotypic alterations in neoplastic cell lines. Moreover, the modulation of miRNA patterns upon ATRA-treatment may represent an effective chemopreventive and anti-cancer therapy strategy. The present systematic review was performed to provide an overview of the modulation of ATRA-induced miRNA expression in different types of neoplastic cells and identify the efficacy of intervention factors (i.e., concentration and duration of treatment) and how they influence expression profiles of oncogenesis-targeting miRNAs. METHODS: A systematic search was conducted according to the PRISMA statement via the US National Library of Medicine MEDLINE/PubMed bibliographic search engine. RESULTS: The search identified 31 experimental studies involving human cell lines from nine different cancer types (neuroblastoma, acute myeloid leukemia, breast cancer, lung cancer, pancreatic cancer, glioma, glioblastoma, embryonal carcinoma, and colorectal cancer) treated with ATRA at concentrations ranging from 10- 3 µmol/L to 102 µmol mol/L for 24 h to 21 days. CONCLUSION: The concentrations used and the duration of treatment of cancer cells with ATRA varied widely. The presence of ATRA in the culture medium of cancer cells was able to modulate the expression of more than 300 miRNAs, and inhibit invasive behavior and deregulated growth of cancer cells, resulting in total tumor remission in some cases. ATRA may thus be broadly effective for neoplasm treatment and prevention, although these studies may not accurately represent in vivo conditions. Additional studies are required to elucidate ATRA-induced miRNA modulation during neoplasm treatment.

Protocolo diferenciado para terapia nutricional na esclerose lateral amiotrófica / Special protocol to nutritional therapy in amyotrophic lateral sclerosis

OBJETIVO: Discutir a terapia nutricional na Esclerose Lateral Amiotrófica (ELA), compartilhando um protocolo elaborado e utilizado em ambulatório especializado. MATERIAL E MÉTODOS: A fundamentação teórica desse artigo foi baseada na literatura científica publicada nas bases de dados PubMed e ISI Web of Science, utilizando os descritores "amyrotrophic lateral sclerosis" and "nutrition". RESULTADOS E DISCUSSÃO: Em síntese, a ELA é uma doença neurodegenerativa rara, com prognóstico desfavorável e tratamento paliativo. A desnutrição é bastante frequente nessa doença e aumenta o risco de morte dos pacientes. Assim, a terapia nutricional é imprescindível e deve estar integrada a uma assistência multidisciplinar. O monitoramento nutricional é recomendado pelo menos a cada três meses, incluindo avaliação nutricional e prescrição de dieta hipercalórica e hiperproteica, com adequada quantidade hídrica e de fibras. Em adição, os micronutrientes, sobretudo os antioxidantes, devem atingir a Ingestão Diária Recomendada. Modificações na consistência da dieta para tratar a disfagia são indicadas e a nutrição enteral deve ser desmistificada entre os pacientes e cuidadores. Esses pacientes são candidatos potenciais para uso da nutrição enteral, a qual deve ser indicada em casos de disfagia significativa ou prejuízo da função respiratória associada com baixa ingestão alimentar, índice de massa corporal menor que 18,5 ou 22,0 kg/m2 (para adultos e idosos, respectivamente) e/ou perda de peso acima de 10%. CONCLUSÃO: Sugere-se a padronização da terapia nutricional na ELA e a instituição de protocolo diferenciado na prática clínica. Com isso, a desnutrição pode ser evitada ou minimizada, contribuindo para melhor qualidade de vida e sobrevida desses pacientes

OBJECTIVE: To discuss the nutritional therapy in Amyotrophic Lateral Sclerosis (ALS), sharing a protocol performed and used by a specialized ambulatory care service. MATERIAL AND METHODS: The theoretical foundation of this paper was based on the literature published in both PubMed and ISI Web of Science, using "amyrotrophic lateral sclerosis" and "nutrition" as keywords. RESULTS AND DISCUSSION: In brief, ALS is a rare neurodegenerative disease with poor prognosis and palliative treatment. Malnutrition is very common in these patients and increases the risk of death among them. Nutritional therapy is essential and must be integrated into a multidisciplinary care. Nutritional monitoring is recommended at least once every three months. Nutritional assessment, high-calorie and highprotein diet with an adequate amount of water and fiber are recommended. In addition, micronutrients, especially antioxidants, must reach the Recommended Dietary Allowances. A diet texture modification for dysphagia is indicated and enteral nutrition should be demystified to patients and care givers during the follow-up care. ALS patients are potential candidates to use enteral nutrition, which should be indicated in cases of significant dysphagia or impaired respiratory function associated with low food intake, body mass index less than 18.5 or 22.0 kg/m² (for adults or elderlies, respectively), and/or body weight loss above 10%. CONCLUSION: We suggest the standardization of nutritional therapy in ALS and the establishment of a distinct protocol in clinical practice. Thus, malnutrition can be avoided or minimized, contributing to a better quality of life and survival of these patients

Comparação de três programas computacionais utilizados na avaliação de recordatórios alimentares 24 horas / Comparison of three softwares used for evaluating of 24-hour food recall / Comparación de tres programas de ordenador usados en la evaluación de recordatorios 24 h

A avaliação do consumo alimentar tem um papel importante na área de Nutrição e Saúde. Para tanto, são necessários métodos apropriados para estimar a ingestão de alimentos e nutrientes. O mercado da informática vem desenvolvendo diversos programas computacionais especializados em nutrição clínica. No entanto, a escolha do programa mais adequado tem sido uma decisão difícil em função das características operacionais disponíveis em cada um. Este estudo objetivou comparar três programas computacionais (Dietwin® profissional, Dietpro® 5i e Avanutri® revolution) utilizados na análise química nutricional de dez Recordatórios Alimentares de 24 horas oriundos de pacientes com Esclerose Lateral Amiotrófica, atendidos no Hospital Universitário da UFRN. Não houve diferença estatística entre os programas computacionais, com relação à energia, macronutrientes e micronutrientes. Todavia, foram detectadas divergências entre as gramaturas estipuladas para medidas caseiras de alguns alimentos. Além disso, observou-se quantificação equivocada do teor de ferro e cobre em dois alimentos. Conclui-se que é preciso ter cautela na escolha de um programa computacional especializado em nutrição clínica, pois poderá superestimar ou subestimar valores de energia ou nutrientes numa dieta prescrita ou consumida. Em adição, cuidado especial deve ser dado à origem das informações que alimentam o banco de dados desses programas, devendo ser as mais fidedignas possíveis.

Food intake assessment has an important role in nutrition research and health. For this purpose, right methods are needed to estimate appropriate intake of food and nutrients. The informatics market has developed several specialized computer programs in clinical nutrition . However, choosing the most appropriate program has been a difficult decision due all of operational features available in each one. This study aimed to compare three computer programs (Dietwin ® professional DietPro ® 5i and Avanutri Revolution ®) used in chemical analysis of ten 24-hour food recall from ten Amyotrophic Lateral Sclerosis patients, attending in by specific Multidisciplinary Team at Federal University of Rio Grande do Norte. There was no statistical difference between the three computer programs related to energy, macronutrients and micronutrients. Despite this, some differences were detected like measure portion food sizes. Moreover, there was wrong quantification of iron and copper content in two foods. We conclude that care should be taken to choose a computer program in clinical nutrition, because it can overestimate or underestimate values of calories and nutrients in a specific diet. In addition, it is necessary to be especially careful in the information sources that will feed the database of these programs. They should be as reliable as possible.

La evaluación de la ingesta alimentaria tiene un papel importante en la investigación en nutrición y salud. Para evaluar la ingesta de alimentos de un individuo se requieren métodos adecuados para la estimación de la ingesta de alimentos y nutrientes. El mercado de la informática ha desarrollado varios programas informáticos especializados en nutrición clínica. Sin embargo, elegir el programa más apropiado ha sido una decisión difícil a la luz de las características disponibles operativo. Este estudio tuvo por objetivo comparar los tres programas de ordenador (Dietwin ® profesional DietPro ® 5i y Avanutri Revolución ®) utilizados en el análisis químico de de recordatorios 24 h de pacientes con Esclerosis Amiotrófica Lateral. No hubo diferencia estadística entre los programas de ordenador, con respecto a la energía, macronutrientes y micronutrientes. Sin embargo, se detectaron diferencias entre los pesos fijados para tamaños de las porciones de algunos alimentos. Además, el contenido de hierro y el cobre se equivocaron en dos alimentos. El estudio demostró que se debe tener cuidado al elegir el mejor programa en la nutrición clínica, ya que puede sobreestimar o subestimar los valores de las calorías y nutrientes de una dieta prescrita o consumido. Además, la atención especial se debe dar a la fuente de la información introducida en la base de datos de estos programas debe ser lo más fiable posible.