Impact of run-of-river damming on increasing phytoplankton biomass and species shift in a large Amazonian river.

Run-of-river (ROR) dams, often perceived as having minimal environmental impact, can induce significant hydrodynamic changes that alter aquatic ecosystems. We investigated the impacts of an ROR dam on the Madeira River, the largest Amazon tributary, focusing on phytoplankton communities, their ecological implications, and related environmental factors. Our study examined changes in biomass and environmental factors (using General Linear Mixed Models - GLMM), species composition (using PERMANOVA) before and after damming, in both the main channel and tributaries (N = 549 samples).

Pilot study of a telehealth intervention for personalized self-management for eating symptoms after gastroesophageal cancer surgery.

Background And Objectives: Following gastric and esophageal cancer surgery, patients often experience significant, prolonged eating-related symptoms. One promising approach to help patients improve their eating-related quality of life (QOL) is through self-management coaching to aid in diet modification. We performed a randomized pilot study of a nutritionist-led telehealth intervention for the self-management of eating after gastroesophageal cancer surgery.

Seroepidemiological Survey of Anti- and Anti- Antibodies in Domestic Cats () in Rolim de Moura, State of Rondônia, North Brazil.

Epidemiological studies on infections by and in cats in the North Region of Brazil are scarce. We intended to assess the seroprevalence in cats of anti- and anti- antibodies, as well as the associated risk factors that may lead them to contract these infections in Rolim de Moura, state of Rondônia, North Brazil. For this, blood serum samples of 100 cats from different regions of the city were evaluated.

Severe Aplastic Anemia Developed after Thymectomy: A Case Report and Literature Review.

Thymus neoplasms are frequently related to paraneoplastic autoimmune manifestations. Its most common associations are myasthenia gravis and pure red cell aplasia. Aplastic anemia has been increasingly documented as an initial presentation of thymoma.

Functional Role of Intracellular Calcium Receptor Inositol 1,4,5-Trisphosphate Type 1 in Rat Hippocampus after Neonatal Anoxia.

Anoxia is one of the most prevalent causes of neonatal morbidity and mortality, especially in preterm neonates, constituting an important public health problem due to permanent neurological sequelae observed in patients. Oxygen deprivation triggers a series of simultaneous cascades, culminating in cell death mainly located in more vulnerable metabolic brain regions, such as the hippocampus. In the process of cell death by oxygen deprivation, cytosolic calcium plays crucial roles.

Metal separation from mixed types of batteries using selective precipitation and liquid-liquid extraction techniques.

The purpose of this paper is to study metal separation from a sample composed of a mixture of the main types of spent household batteries, using a hydrometallurgical route, comparing selective precipitation and liquid-liquid extraction separation techniques. The preparation of the solution consisted of: grinding the waste of mixed batteries, reduction and volatile metals elimination using electric furnace and acid leaching. From this solution two different routes were studied: selective precipitation with sodium hydroxide and liquid-liquid extraction using Cyanex 272 [bis(2,4,4-trimethylpentyl) phosphoric acid] as extracting agent.

Loss of heterozygosity at 19p13.2 and 2q21 in tumours from familial clusters of non-medullary thyroid carcinoma.

Linkage studies have identified susceptibility loci for familial nonmedullary thyroid cancer (FNMTC), with and without cell oxyphilia, at chromosomal regions 19p13.2 and 2q21. There are few genetic analyses of FNMTC tumours reported at the present time and the eventual gene involved was not identified yet.

Thyroglobulin detection in fine-needle aspirates of cervical lymph nodes: a technique for the diagnosis of metastatic differentiated thyroid cancer.

Background: Fine-needle aspiration cytology is frequently used for differential diagnosis of neck masses of unknown origin. Inconclusive and even false-negative results are not uncommon.

Aim: To evaluate the utility of thyroglobulin (Tg) measurement in fine-needle aspirates (FNA-Tg) for detecting cervical lymph node (CLNs) metastases from differentiated thyroid carcinomas.

Occurrence of the Cys611Tyr mutation and a novel Arg886Trp substitution in the RET proto-oncogene in multiple endocrine neoplasia type 2 families and sporadic medullary thyroid carcinoma cases originating from the central region of Portugal.

Objective: Medullary thyroid carcinoma (MTC) occurs both sporadically and in the context of autosomal dominantly inherited multiple endocrine neoplasia type 2 (MEN2) syndromes: MEN2A, MEN2B, and familial medullary thyroid carcinoma (FMTC), which are caused by activating germline mutations in the RET proto-oncogene. The aim of this study was to characterize the RET mutational spectrum in MEN2 families and apparently sporadic MTC (AS-MTC) cases originating from the central region of Portugal.

Subjects And Methods: We studied a total of 82 individuals (64 affected and 18 family members), comprising five MEN2 families (four MEN2A and one MEN2B), as well as 53 AS-MTC cases.

[Thyroid dysfunction in the newborn].

The authors refer to congenic hypothyroidism, hypotyroxinemia in premature new-borns, thyroid dysfunction, congenic thyrotoxicosis, breastfeeding, composed anti-thyroid drugs and children nutrition based on iodine. Concerning to the fetus and new-born thyroid dysfunction, it's very important to make an early diagnosis in order to avoid later complications. Several studies revealed that the different types of composed anti-thyroid drugs can induce pregnant woman choice.