Publications by authors named "Zabaleta M"

The anterior commissure (AC) is the area where the vocal cords attach to the thyroid cartilage through Broyles' ligament. Many authors argue that involvement of the anterior commissure in early stage glottic carcinoma (I, II) constitutes a risk factor for local recurrence. The objective of this study is to evaluate whether anterior commissure involvement in early stage glottis cancer is an independent risk factor for recurrence and mortality.

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Background: Carrying out a correct anatomical classification of lung cancer is crucial to take clinical and therapeutic decisions in each patient.

Aim: TNM staging classification provides an accurate anatomical description about the extension of the disease; however, the anatomical burden of the disease is just one aspect that changes the prognosis.

Relevance For Patients: TNM staging classification is a tool that predicts survival, but we must consider that TNM is just one of the factors that concern the prognosis.

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HER2-positive breast cancer is one of the most aggressive subtypes accounting for nearly 30% of diagnosed cases. It is associated with reduced disease-free survival, tumor invasiveness, and a poor overall prognosis. Unfortunately, numerous patients develop resistance to conventional therapies; therefore, many ongoing clinical trials are testing new possible treatments.

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Chloroquine (CQ) and hydroxychloroquine (HCQ) are derivatives of the heterocyclic aromatic compound quinoline. These economical compounds have been used as antimalarial agents for many years. Currently, they are used as monotherapy or in conjunction with other therapies for the treatment of autoimmune diseases such as systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), Sjögren's syndrome (SS) and antiphospholipid antibody syndrome (APS).

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tRNA-derived fragments (tRFs) have been defined as a novel class of small noncoding RNAs. tRFs have been reported to be deregulated in cancer, but their biologic function remains to be fully understood. We have identified a new tRF (named tRF3E), derived from mature tRNA, that is specifically expressed in healthy mammary glands but not in breast cancer (BC).

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and genes are involved in DNA double-strand break repair and related to breast cancer. Shift work is associated with biological clock alterations and with a higher risk of breast cancer. The aim of this study was to investigate the variability of expression of genes through the day in healthy subjects and to measure expression levels in shift workers.

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Article Synopsis
  • - The draft genome sequence of the rhizobium strain UYCP14C, isolated from nodules, has been presented, with a genome size of approximately 9.8 million base pairs.
  • - The genome includes 9,031 predicted protein-coding sequences, featuring multiple genes related to symbiosis and nitrogen fixation.
  • - UYCP14C is suggested to be a new species within the plant growth-promoting genus of rhizobia.
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Background: Among semi-aquatic species of the legume genus Aeschynomene, some have the property of being nodulated by photosynthetic Bradyrhizobium lacking the nodABC genes necessary for the synthesis of Nod factors. Knowledge of the specificities underlying this Nod-independent symbiosis has been gained from the model legume Aeschynomene evenia but our understanding remains limited due to the lack of comparative genetics with related taxa using a Nod factor-dependent process. To fill this gap, we combined different approaches to perform a thorough comparative analysis in the genus Aeschynomene.

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Unlabelled: The large legume genus Mimosa is known to be associated with both alphaproteobacterial and betaproteobacterial symbionts, depending on environment and plant taxonomy, e.g., Brazilian species are preferentially nodulated by Burkholderia, whereas those in Mexico are associated with alphaproteobacterial symbionts.

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Introduction: Traumatic brain injury is the leading cause of mortality and disability in children in the developed countries. Despite the plasticity of an infant's brain, injury at this early stage can lead to important sequelae that will affect functioning later in life. The understanding of the functional profile after a traumatic brain injury is important for planning interventions and treatment resources once the preventive phase has failed.

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Basal-like breast cancer (BLBC) remains a great challenge because of its clinically aggressive nature and lack of effective targeted therapy. We analyzed the potential anti-neoplastic effects of sanguinarine, a natural benzophenanthridine alkaloid, against BLBC cells. Sanguinarine treatment resulted in a reduction of cell migration, in a dose-dependent inhibition of cell viability and in the induction of cell death by apoptosis in both human (MDA-MB-231 cells) and mouse (A17 cells) in vitro models of BLBC.

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Here we present a quantitative mechanism-based investigation aimed at comparing the cell uptake, intracellular trafficking, endosomal escape and final fate of lipoplexes and lipid-protamine/deoxyribonucleic acid (DNA) (LPD) nanoparticles (NPs) in living Chinese hamster ovary (CHO) cells. As a model, two lipid formulations were used for comparison. The first formulation is made of the cationic lipid 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) and the zwitterionic lipid dioleoylphosphocholine (DOPC), while the second mixture is made of the cationic 3β-[N-(N,N-dimethylaminoethane)-carbamoyl] cholesterol (DC-Chol) and the zwitterionic helper lipid dioleoylphosphatidylethanolamine (DOPE).

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Among the leguminous trees native to Uruguay, Parapiptadenia rigida (Angico), a Mimosoideae legume, is one of the most promising species for agroforestry. Like many other legumes, it is able to establish symbiotic associations with rhizobia and belongs to the group known as nitrogen-fixing trees, which are major components of agroforestry systems. Information about rhizobial symbionts for this genus is scarce, and thus, the aim of this work was to identify and characterize rhizobia associated with P.

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In patients with systemic lupus erythematosus (SLE) metabolic alterations are often observed, which may be due to either the disease, the genetic background or the treatment. We studied the serum levels of the adipokines leptin, adiponectin, resistin, visfatin and ghrelin in patients with SLE and controls. Leptin levels were lower and adiponectin, ghrelin and visfatin levels were higher in the patients.

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The low-density lipoprotein receptor (LDLR) is directly involved in the metabolism of low-density lipoprotein (LDL) and its impairment causes accumulation of plasmatic LDL leading to atherosclerosis, a prevalent disease in patients with systemic lupus erythematosus (SLE). We studied LDLR transcription, expression and function in leukocytes patients with SLE and normal healthy donors (NHD). The ratio LDLR/glyceraldehyde-3-phosphate dehydrogenase (GADPH) mRNAs the expression of LDLR and the uptake of LDL-DiI were significantly lower (p < 0.

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CD154, a member of the tumor necrosis factor receptor family, is involved in several biological responses. In the sera of systemic lupus erythematosus (SLE) patients, the levels of sCD154 have been shown to be increased, however, few reports have dealt with the biologically active tetramer. Here, we assessed the biological activity of the serum CD154 tetramer using bioassays for BC activation and production nitrite or peroxide.

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Background: The aim of this study is to examine the influence of the catechol-O-methyltranferase (COMT) gene (polymorphism Val158 Met) as a risk factor for Alzheimer's disease (AD) and mild cognitive impairment of amnesic type (MCI), and its synergistic effect with the apolipoprotein E gene (APOE).A total of 223 MCI patients, 345 AD and 253 healthy controls were analyzed. Clinical criteria and neuropsychological tests were used to establish diagnostic groups.

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The pathogenesis of chronic idiopathic urticaria (CIU) is not completely understood although autoimmunity has been proposed. The aim of the study was to assess the expression of different leukocyte antigens, by flow cytometry, assaying total blood of 29 patients with CIU and of 20 sex and age matched controls. Moreover, we assessed soluble CD154 a marker of immune cell activation, predominantly memory T cells.

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The pathogenesis of chronic idiopathic urticaria (CIU) is not understood completely; however, autoimmunity has been implicated. Because membrane and soluble forms of CD154 have been reported to be increased, in several autoimmune diseases, we have quantified the soluble CD154 (sCD154) molecule by a sandwich enzyme-linked immunosorbent assay in serum samples of 32 patients with CIU (aged 32 +/- 12 years) and compared them with 32 age- and sex-matched nonallergic controls. A marked increase was observed in patients with CIU as compared with controls (4.

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In order to define an activity profile in patients with multiple sclerosis (MS), T-cell subpopulations and proliferative responses to myelin basic protein (MBP) associated with anti-MBP antibodies, nitrotyrosine levels in serum and cerebrospinal fluid (CSF), and serum CD40L (sCD154) were simultaneously assessed in 29 consecutive and untreated MS patients. When compared to controls, patients in secondary progressive stable (SP/I), or in full remission (RR/I) stages, individuals with secondary progressive active disease (SPIA) or in acute relapse (RR/A) showed a significant decrease of CD4/CD45RA+ T cells associated with an increase of absolute numbers of CD4/45R0+ T cells (p < 0.001).

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The extramedullary plasmacytoma account for 1-2% of the total number of plasma-cell growths. 80 percent are originated on head and neck, beginning on submucous layer of the upper airways. Male are more frequent affected at sixth-seventh decade.

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Seven cases of extracranial schwannomas in head and neck area are presented. The anatomical structures involved were: tongue, oral mucosa, nasal cavity, IX and XI cranial nerves. It rarely appears (7 cases in 19 years).

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The AA. had work through medical histories of 44 patients operated for inflammatory and tumoral pathology of submandibular gland. Between inflammatory diseases they emphasize sialolithiasis (45%), acute submaxillaritis (18%) and Kuttner's tumor (11%).

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Survey of the 49 glottic tumors, state T1, treated by the AA. at their Department between the years 1984 and 1991. Subperichondral cordectomy through the midsaggital plane and laryngotracheal dissection of middle area was the followed procedure.

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The paper deals with the survey of 66 congenital neck malformations (27 thyroglossal cysts and 32 branchial plus 7 lymphatic anomalies) surgically treated in the last 5 years term. Thyroglossal cysts presented in children and young people, in the middle line, and 92.6% of them were infrahyoid.

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