71 results on '"Pereira MT"'
Search Results
2. Drinking beer and understanding organizational culture embodiment.
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Flores-Pereira MT, Davel E, and Cavedon NR
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BEER ,ALCOHOL drinking ,ORGANIZATIONAL behavior ,PROFESSIONAL relationships ,DRINKING behavior ,WORK environment - Abstract
Although organizational researchers have gained in terms of different perspectives of thought and reflexivity regarding the subject of organizational culture, they have neglected studying the embodied dimension of organizational culture. The purpose of this article is to use embodiment perspective to enlighten understanding of organizational culture. We do that by giving special attention to: a) a pioneering empirical anthropological study that deals with the cultureDLembodiment relationship and b) an organizational ethnography in which work colleagues engage in the after-work beer drinking ritual. This double emphasis suggests that organizational life become first meaningful in the experiential immediacy of employees and organization. In this very moment organizational culture signification is not yet representational, but perceptual. Thus, the main contribution of this research is to show that organizational culture is more than a cognitive-representational abstraction: it is also a perceptual-embodied experience. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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3. Enamel fluorosis in 12- and 15-year-old school children in Costa Rica. Results of a National Survey, 1999.
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Salas-Pereira MT, Beltrán-Aguilar ED, Chavarría P, Solórzano I, and Horowitz H
- Abstract
In 1987, Costa Rica implemented a national salt fluoridation programme using sodium fluoride (225-275 mg F/kg). OBJECTIVE: To evaluate the prevalence and severity of enamel fluorosis (EF) in Costa Rican schoolchildren as part of the biological monitoring of the salt fluoridation programme. BASIC RESEARCH DESIGN: In 1999, eight calibrated examiners (interexaminer Kappa = 0.73) recorded EF in the maxillary anterior teeth and first bicuspids (FDI's teeth 14 to 24) using Dean's Index and artificial light without drying. The multistrata probability sample included 12 and 15-year-old schoolchildren (n = 2,499), representing seven regions of the country. Data were analyzed in SAS and SUDAAN to account for sampling design. SETTING: Costa Rican schoolchildren. The 12-year-old cohort was born when salt fluoridation started. PARTICIPANTS: 3,758 children in selected age groups. MAIN OUTCOME MEASURES: Dean's index was calculated for cuspid to cuspid (teeth 13 to 23) and premolar to premolar (teeth 14 to 24). RESULTS: Prevalence of EF (very mild or higher) at age 12 years was 17% for teeth 13 to 23 and 32% when teeth 14 and 24 were included. At age 15 years, the prevalence was 12% for teeth 13 to 23 and 25% when teeth 14 and 24 were included. Large regional differences were observed: from 10% to 76% among 12-year-old children and from 6% to 50% among 15-year-old children. CONCLUSIONS: In the aggregate, EF prevalence is within the range expected for a salt fluoridation programme, but regions with higher severity need further investigation on additional sources of fluoride including environmental sources. Prevalence figures were higher in the cohort born at time of fluoridation. [ABSTRACT FROM AUTHOR]
- Published
- 2008
4. Cyclometallated compounds of Pd(II) with Schiff bases with the diphosphines Ph(2)PCH(2)PPh(2) (dppm)y Ph(2)PC(=CH2)PPh(2)(vdpp)
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Fernandez, Jj, Gayoso, M., Vila, Jm, Pereira, Mt, Suarez, A., Ortigueira, Jm, Fernandez, A., and Torres, Ml
5. Effect of mono- and dinuclear thiosemicarbazone platinacycles in the proliferation of a colorectal carcinoma cell line.
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Reigosa-Chamorro F, Cordeiro S, Pereira MT, Filipe B, Baptista PV, Fernandes AR, and Vila JM
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- Humans, Animals, Membrane Potential, Mitochondrial drug effects, Organoplatinum Compounds pharmacology, Organoplatinum Compounds chemistry, Organoplatinum Compounds chemical synthesis, HCT116 Cells, Drug Screening Assays, Antitumor, Cell Line, Tumor, Molecular Structure, Structure-Activity Relationship, Coordination Complexes pharmacology, Coordination Complexes chemistry, Coordination Complexes chemical synthesis, Thiosemicarbazones chemistry, Thiosemicarbazones pharmacology, Thiosemicarbazones chemical synthesis, Cell Proliferation drug effects, Antineoplastic Agents pharmacology, Antineoplastic Agents chemistry, Antineoplastic Agents chemical synthesis, Colorectal Neoplasms pathology, Colorectal Neoplasms drug therapy, Colorectal Neoplasms metabolism, Apoptosis drug effects, Reactive Oxygen Species metabolism
- Abstract
Herein, we describe the synthesis and characterization of a series of thiosemicarbazone platinacycles. Their activity towards HCT116 and A2780 cancer cell lines as well as normal fibroblasts was explored and conclusions about the influence of their structures were drawn based on the results. Ligands L1-3, tetranuclear compounds [Pt( L1-3 )]
4 , [Pt( L1-3 )(PPh3 )] , and [Pt( L1-L3 )2 {Ph2 P(CH2 )4 PPh2 }] , and phosphine derivatives, were deemed unpromising owing to their lack of activity. However, mono-coordinated diphosphine complexes [Pt( L1-L3 )(Ph2 PCH2 PPh2 - P )] showed high selectivity and low IC50 values, and their antiproliferative activity was further studied. The three studied derivatives 3a, 3b and 3c showed a fast internalization of HCT116 colorectal cancer cells with similar IC50 values, which induced a depolarization of mitochondrial membrane potential, with the subsequent triggering of apoptosis and autophagy in the case of 3c. In the case of compounds 3a and 3b, cell death mechanisms (extrinsic and intrinsic apoptosis, respectively) were triggered via the induction of reactive oxygen species (ROS). The three compounds were not toxic to a chicken embryo in vivo (after 48 h), and, importantly, showed an anti-angiogenic potential after exposure to the IC50 of compounds 3a, 3b and 3c.- Published
- 2024
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6. Reactivity of Schiff base-[C,N,S] pincer palladacycles: hydrolysis renders singular trinuclear, tetranuclear, and heteropentanuclear Pd 3 W 2 coordinated complexes.
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Reigosa F, Polo PM, Pereira MT, and Vila JM
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Treatment of the Schiff base ligands a-f with Li
2 [PdCl4 ]/NaAcO in methanol under reflux gave the single nuclear palladacycles 1a-1f, with the metal atom bonded to a terdentate monoanionic [C,N,S] iminic ligand and to a chloride ligand that completes the palladium coordination sphere. Reaction of 1a-1c with silver perchlorate/triphenylphosphine in acetone at room temperature yielded the single nuclear complexes 2a-2c as the perchlorate salts, after substitution of the chloride ligand by a triphenylphosphine. However, reaction of a-c with Na2 [PdCl4 ]/NaAcO in methanol at room temperature also gave compounds 1a-1c albeit contaminated with small amounts of the corresponding free aldehyde (mixture A). Reaction of mixture A with silver perchlorate/triphenylphosphine in acetone at room temperature gave analogously 2a-2c with some of the corresponding free aldehyde (mixture B). Attempts to purify mixtures A and B via recrystallization produced single crystals of 5 and 6 respectively: two serendipitously formed complexes, bearing thiomethyl aniline and/or acetate ligands, and void of aldehyde or iminic residue; the structures contain eight- and six-membered rings of alternating palladium and nitrogen atoms, respectively. To clarify this situation the aniline itself was reacted with palladium(II) acetate or with Na2 [PdCl4 ]; in the latter case after recrystallization a unique behavior is revealed, giving rise to a tetranuclear complex containing a Pd4 N4 ring with three differing coordination environments on the palladium atoms. Treatment of 1d with Ph2 PCH2 PPh2 (dppm)/AgClO4 or with Ph2 PCH2 (PPh2 )W(CO)5 /AgClO4 gave 3d, with a mono-coordinated dppm ligand, and 4d, respectively; complex 3d could not be converted into 4d by reaction with W(CO)5 (THF). Recrystallization of 4d gave a still further noticeable species, complex 8: a pentanuclear trans -configured heterometallic mixed valent Pd(II)/W(0) linear complex with the palladium atoms supported by two acetate and two thiomethyl aniline bridging ligands. The complexes were fully characterized by microanalysis, IR,1 H, and31 P NMR spectroscopies, as appropriate. The X-ray single-crystal analyses for compounds 1b, 5, 6, 7 and 8 are described.- Published
- 2024
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7. Maternal Hypertriglyceridemia in Gestational Diabetes: A New Risk Factor?
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Marques Puga F, Borges Duarte D, Benido Silva V, Pereira MT, Garrido S, Vilaverde J, Sales Moreira M, Pichel F, Pinto C, and Dores J
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- Humans, Pregnancy, Female, Retrospective Studies, Adult, Risk Factors, Triglycerides blood, Body Mass Index, Infant, Newborn, Birth Weight, Logistic Models, Hypertriglyceridemia blood, Hypertriglyceridemia complications, Diabetes, Gestational blood, Pregnancy Trimester, Third blood, Fetal Macrosomia epidemiology, Fetal Macrosomia etiology
- Abstract
Elevated maternal triglycerides (TGs) have been associated with excessive fetal growth. However, the role of maternal lipid profile is less studied in gestational diabetes mellitus (GDM). We aimed to study the association between maternal lipid profile in the third trimester and the risk for large-for-gestational-age (LGA) newborns in women with GDM. We performed an observational and retrospective study of pregnant women with GDM who underwent a lipid profile measurement during the third trimester. We applied a logistic regression model to assess predictors of LGA. A total of 100 singleton pregnant women with GDM and third-trimester lipid profile evaluation were included. In the multivariate analysis, pre-pregnancy BMI (OR 1.19 (95% CI 1.03-1.38), p = 0.022) and hypertriglyceridemia (OR 7.60 (1.70-34.10), p = 0.008) were independently associated with LGA. Third-trimester hypertriglyceridemia was found to be a predictor of LGA among women with GDM, independently of glycemic control, BMI, and pregnancy weight gain. Further investigation is needed to confirm the role of TGs in excessive fetal growth in GDM pregnancies.
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- 2024
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8. Cisplatin Toxicity Causes Neutrophil-Mediated Inflammation in Zebrafish Larvae.
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Padovani BN, Morales Fénero C, Paredes LC, Amaral MAD, Domínguez-Amorocho O, Cipelli M, Gomes JMM, da Silva EM, Silva LM, Vieira RS, Pereira MT, Cruz MC, and Câmara NOS
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- Animals, Zebrafish, Neutrophils metabolism, Larva, Inflammation chemically induced, Inflammation metabolism, Cytokines metabolism, Mammals, Cisplatin toxicity, Cisplatin metabolism, Acute Kidney Injury metabolism
- Abstract
Cisplatin is an antineoplastic agent used to treat various tumors. In mammals, it can cause nephrotoxicity, tissue damage, and inflammation. The release of inflammatory mediators leads to the recruitment and infiltration of immune cells, particularly neutrophils, at the site of inflammation. Cisplatin is often used as an inducer of acute kidney injury (AKI) in experimental models, including zebrafish ( Danio rerio ), due to its accumulation in kidney cells. Current protocols in larval zebrafish focus on studying its effect as an AKI inducer but ignore other systematic outcomes. In this study, cisplatin was added directly to the embryonic medium to assess its toxicity and impact on systemic inflammation using locomotor activity analysis, qPCR, microscopy, and flow cytometry. Our data showed that larvae exposed to cisplatin at 7 days post-fertilization (dpf) displayed dose-dependent mortality and morphological changes, leading to a decrease in locomotion speed at 9 dpf. The expression of pro-inflammatory cytokines such as interleukin (il)-12 , il6 , and il8 increased after 48 h of cisplatin exposure. Furthermore, while a decrease in the number of neutrophils was observed in the glomerular region of the pronephros, there was an increase in neutrophils throughout the entire animal after 48 h of cisplatin exposure. We demonstrate that cisplatin can have systemic effects in zebrafish larvae, including morphological and locomotory defects, increased inflammatory cytokines, and migration of neutrophils from the hematopoietic niche to other parts of the body. Therefore, this protocol can be used to induce systemic inflammation in zebrafish larvae for studying new therapies or mechanisms of action involving neutrophils.
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- 2024
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9. Assessing cardiac resynchronization therapy response in heart failure patients: a comparative analysis of efficacy and outcomes between transvenous and epicardial leads.
- Author
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Neves Pereira MT, Tinoco M, Castro M, Pinheiro L, Cardoso F, Calvo L, Ribeiro S, Monteiro V, Sanfins V, and Lourenço A
- Abstract
Cardiac resynchronization therapy (CRT) is an effective treatment for selected heart failure (HF) patients. Although transvenous implantation is the standard method, it is not feasible in some patients, so the epicardial lead emerges as an alternative. We aim to compare CRT response, procedure-related complications, and the occurrence of clinical outcomes between patients with transvenous and epicardial leads. In a single-center retrospective study, we enrolled consecutive HF patients submitted to CRT implantation with a defibrillator between 2013 and 2022. Clinical response was defined as an improvement of at least one of the New York Heart Association classes with no occurrence of cardiovascular death or HF hospitalization in the first year of follow-up. Echocardiographic response was attained with an increase in left ventricular ejection fraction 10% or a reduction of left ventricular end-diastolic volume >15% at 6-12 months after CRT implantation. Major adverse cardiovascular events (MACE) (cardiovascular mortality and HF hospitalization) and all-cause mortality were evaluated. From a total of 149 patients, 38% (n=57) received an epicardial lead. Clinical (63% versus 60%, p=0.679) and echocardiographic (63% versus 60%, p=0.679) responses were similar between the transvenous and epicardial groups. Patients in the transvenous group had a shorter hospital stay (2 versus 7 days, p<0.001). Procedure-related complications were comparable between groups (24% versus 28%, p=0.572), but left ventricular lead-related complications were more frequent in the transvenous group (14% versus 2%). During a median follow-up of 4.7 years, the rate of MACE was 30% (n=44), with no differences in both groups (p=0.591), neither regarding HF hospitalization (p=0.917) nor cardiovascular mortality (p=0.060). Nevertheless, the epicardial group had a higher rate of all-cause mortality (35% versus 20%, p=0.005), the majority occurring during long-term follow-up (>12 months), with no deaths in the postoperative period. Considering the comparable rates of CRT response, procedure-related complications, and MACE between groups, we conclude that epicardial lead is a feasible alternative for CRT when transvenous lead implantation is not possible. The occurrence of a higher number of all-cause deaths in epicardial patients in the long-term follow-up was mainly due to infectious complications (unrelated to the lead) and the progression of oncological/chronic diseases.
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- 2024
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10. DAYWAKE implicates novel roles for circulating lipid-binding proteins as extracerebral regulators of daytime wake-sleep behavior.
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Villegas G, Pereira MT, Love CR, and Edery I
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- Animals, Circadian Rhythm physiology, Sleep genetics, Drosophila metabolism, Lipids, Drosophila melanogaster metabolism, Drosophila Proteins genetics, Drosophila Proteins metabolism
- Abstract
Sleep during the midday, commonly referred to as siesta, is a common trait of animals that mainly sleep during the night. Work using Drosophila led to the identification of the daywake (dyw) gene, found to have anti-siesta activity. Herein, we show that the DYW protein undergoes signal peptide-dependent secretion, is present in the circulatory system, and accumulates in multiple organs, but, surprisingly, it is not detected in the brain where wake-sleep centers are located. The abundance of DYW in adult flies is regulated by age, sex, temperature, and the splicing efficiency of a nearby thermosensitive intron. We suggest that DYW regulates daytime wake-sleep balance in an indirect, extracerebral manner, via a multi-organ network that interfaces with the circulatory system., (© 2023 The Authors. FEBS Letters published by John Wiley & Sons Ltd on behalf of Federation of European Biochemical Societies.)
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- 2024
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11. Inappropriate gestational weight gain impact on maternofetal outcomes in gestational diabetes.
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Santos Monteiro S, S Santos T, Fonseca L, Saraiva M, Pichel F, Pinto C, Pereira MT, Vilaverde J, Almeida MC, and Dores J
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- Infant, Newborn, Pregnancy, Female, Humans, Fetal Macrosomia epidemiology, Fetal Macrosomia etiology, Retrospective Studies, Body Mass Index, Weight Gain, Birth Weight, Diabetes, Gestational epidemiology, Gestational Weight Gain
- Abstract
Objective: To evaluate the association between the dimension of deviation from appropriate gestational weight gain (GWG) and adverse maternofetal outcomes in women with gestational diabetes mellitus (GDM)., Methods: We performed a multicentric retrospective study based on the Portuguese GDM Database. Women were classified as within GWG, insufficient (IGWG) or excessive (EGWG) than the Institute of Medicine recommendations. EGWG and IGWG were calculated for each prepregnancy BMI category. Large-for-gestational-age (LGA) and macrosomia were defined as a birthweight more than the 90th percentile for the gestational age and newborn weight greater than 4000 g, respectively. Logistic regression models (adjusted odds ratio [aOR] plus 95% confidence interval [95%CI]) were derived to evaluate the association between EGWG or IGWG and adverse maternofetal outcomes., Results: A total of 18961 pregnant women were included: 39.7% with IGWG and 27.8% with EGWG. An EGWG over 3 kg was associated with a higher risk of LGA infants (aOR 1.95, 95%CI 1.17-3.26) and macrosomia (aOR 2.01, 95%CI 1.23-3.27) in prepregnancy normal weight women. An EGWG greater than 4 kg was associated with a higher risk of LGA infants (aOR 1.67, 95%CI 1.23-2.23) and macrosomia (aOR 1.90, 95%CI 1.38-2.61) in obese women. In overweight women, an EGWG above 3.5 kg was associated with a higher risk of LGA infants (aOR 1.65, 95%CI 1.16-2.34), macrosomia (aOR 1.85, 95%CI 1.30-2.64), preeclampsia (aOR 2.40, 95%CI 1.45-3.98) and pregnancy-induced hypertension (aOR 2.21, 95%CI 1.52-3.21). An IGWG below -3.1 kg or -3kg was associated with a higher risk of small-for-gestational-age [SGA] infants in women with normal (OR 1.40, 95%CI 1.03-1.90) and underweight (OR 2.29, 95%CI 1.09-4.80), respectively., Conclusions: Inappropriate gestational weight gain seems to be associated with an increased risk for adverse maternofetal outcomes, regardless of prepregnancy BMI. Beyond glycemic control, weight management in women with GDM must be a focus of special attention to prevent adverse pregnancy outcomes.KEY MESSAGESThe dimension of deviation from appropriate gestational weight gain was associated with an increased risk for adverse maternofetal outcomes among women with gestational diabetes.Weight management must be a focus of special attention in women with gestational diabetes to prevent adverse pregnancy outcomes.
- Published
- 2023
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12. Double Interatrial Septum: When Two Layers Aren't Enough.
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Neves Pereira MT, Ramada Oliveira AM, de Brito Cordeiro AFP, Araújo da Cruz MCF, and Miranda Lourenço AR
- Abstract
Competing Interests: The authors have no financial conflicts of interest.
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- 2023
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13. Letter to the Editor: Successful Prenatal Management of Inherited Congenital Non-Autoimmune Hyperthyroidism.
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Monteiro SS, Monteiro MP, Inocêncio G, Borges T, Garrido S, Pereira MT, Vilaverde J, Sales M, Pinto C, Rodrigues MDC, Guedes-Martins L, Dores J, and Reis CF
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- Female, Pregnancy, Humans, Mutation, Hyperthyroidism genetics, Hyperthyroidism therapy, Hyperthyroidism congenital
- Published
- 2023
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14. Six-Year Complete Remission of Type-1 Diabetes Mellitus in an Adult Treated With Sitagliptin.
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Benido Silva V and Pereira MT
- Abstract
A "honeymoon" phase is a transient period of type 1 diabetes (T1D) remission, characterized by a significant reduction in insulin requirements and good glycemic control due to a temporary restoration of pancreatic β-cell function. This phenomenon occurs in about 60% of adults with this disease, is usually partial, and lasts for up to 1 year. We present a case of a 6-year complete remission of T1D in a 33-year-old man, the longest remission ever described in the literature to our knowledge. He was referred for presenting a 6-month history of polydipsia, polyuria, and weight loss of 5 kg. Laboratory studies confirmed the diagnosis of T1D (fasting blood glucose of 270 mg/dL; HbA1c of 10.6%, and positive antiglutamic acid decarboxylase), and the patient started intensive insulin therapy. After 3 months, a complete remission of the disease was assumed, he suspended insulin administration and since then, he has been under treatment with sitagliptin 100 mg daily, a low-carbohydrate diet, and regular aerobic physical activity. This work aims to highlight the potential role of these factors in delaying disease progression and preserving pancreatic β-cells when introduced at the time of presentation. More robust, prospective, and randomized studies will be needed to confirm its protective effect on the natural course of the disease and support its indication in adults with newly diagnosed T1D., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Benido Silva et al.)
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- 2023
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15. Iatrogenic Cushing's Syndrome: The Result of Cobicistat and Glucocorticoid Interaction in an HIV Patient After Bariatric Surgery.
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Benido Silva V, Cardoso J, Esteves Brandão M, Mesquita I, and Pereira MT
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Cobicistat, used as a pharmacokinetic booster in therapeutic combination with human immunodeficiency virus (HIV) protease inhibitors and integrase inhibitors, is a strong inhibitor of cytochrome P450 3A4 (CYP3A4). Since most glucocorticoids are metabolized by the isoenzyme of the cytochrome P450 pathway, their plasma concentrations can be highly increased in the presence of cobicistat-boosted darunavir, with subsequent risk of iatrogenic Cushing's syndrome (ICS) and secondary adrenal insufficiency. We report a case of a 45-year-old man with HIV-hepatitis C virus co-infection treated with raltegravir and darunavir/cobicistat since 2019. In May 2021, he underwent a sleeve gastrectomy due to morbid obesity (BMI: 50.9 kg/m2) with multiple comorbidities. Four months after surgery, he was diagnosed with asthma and was started on inhaled budesonide, which was later changed to fluticasone propionate. At the 12-month postoperative visit, the patient referred proximal muscle weakness and asthenia, and suboptimal weight loss (excess weight loss of 39%) and high blood pressure were documented. Moon facies, buffalo hump, and abdominal large vinous striae were evident on physical examination. Laboratory studies showed impaired glucose metabolism and hypokalemia. Cushing's syndrome was suspected and further investigation confirmed its iatrogenic origin. The diagnosis of ICS and consequent secondary adrenal insufficiency due to an interaction between the darunavir/cobicistat combination and budesonide/fluticasone was established. Darunavir/cobicistat therapy was replaced by dolutegravir/doravirine dual therapy, inhaled corticoid was switched to beclomethasone, and glucocorticoid substitutive therapy was introduced. This is a particular case of overt ICS due to cobicistat-inhaled corticosteroid interaction in a superobese patient, developed after he underwent bariatric surgery. The presence of morbid obesity, combined with the rarity of this pharmacological complication in individuals taking cobicistat, made the correct diagnosis even more challenging. A meticulous review of pharmacologic habits and potential interactions is essential to avoid serious harm to patients., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Benido Silva et al.)
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- 2023
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16. Design and implementation of the Professional Wellbeing Programme of the Medical Council of Uruguay.
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Dapueto JJ, Klasse E, Campos N, Rodríguez Andrada B, Romero Agüit S, Braquehais MD, Tolchinsky G, Pereira MT, Sarubbo L, Ceroni C, Sánchez N, and Blanc L
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- Humans, Male, Female, Uruguay, Emotions, Pandemics, COVID-19
- Abstract
Multiple studies have reported a high prevalence of mental health problems among male and female physicians. Although doctors are reluctant to seek professional help when suffering from a mental disorder, specialised services developed specifically to treat their mental health problems have reported promising results. The purpose of this article is to describe the design and implementation of the Professional Wellbeing Programme (Programa de Bienestar Profesional) of the Uruguayan Medical Council (Colegio Médico del Uruguay). The context, inputs, activities and some of the outputs are described according to a case study design. The main milestones in the implementation of the programme are also outlined, as well as the enabling elements, obstacles and main achievements. Emphasis will be placed on the importance of international collaboration to share experiences and models, how to design the care process to promote doctors' access to psychiatric and psychological care, the need for them to be flexible and dynamic in adapting to new and changing circumstances, such as the COVID-19 pandemic, and to work in parallel with the medical regulatory bodies. It is hoped that the experience described in this work may be of use to other Latin American institutions interested in developing mental health programmes for doctors., (Copyright © 2021 Asociación Colombiana de Psiquiatría. Published by Elsevier España, S.L.U. All rights reserved.)
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- 2023
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17. Cyclometallated Palladium(II) Complexes: An Approach to the First Dinuclear Bis(iminophosphorane)phosphane-[C,N,S] Metallacycle.
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Rúa-Sueiro M, Munín-Cruz P, Fernández A, Ortigueira JM, Pereira MT, and Vila JM
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- Ligands, Crystallography, X-Ray, Palladium chemistry, Methane
- Abstract
Treatment of bis(iminophosphorane)phosphane ligands 2a - 2e with Li
2 PdCl4 gave a set of novel diphosphane-derived complexes bearing two metallacycle rings, each one enclosing a P=N double bond: the unprecedented bis(iminophosphorane)phosphane-[C,N,S] palladacycles. In the case of the ligand derived from bis(diphenylphosphino)methane, 2a , both the single and the double palladacycle complexes were obtained. Reaction of 3a with bis(diphenylphosphino)ethane did not yield the expected product with the diphosphane bonded to both palladium atoms, but rather the novel coordination compound 5 . The crystal structures of 3c and 5 are described.- Published
- 2022
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18. Cyclometallated Platinum(II) Complexes with Small Crown Ether Rings: Appropriate Choice of the Bridging Diphosphane to Coordinate Potassium Cations.
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Lucio-Martínez F, Reigosa F, Bermúdez B, Adams H, Pereira MT, and Vila JM
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This account reports the synthesis and structural characterization of the first cyclometallated platinum(II) complex that coordinates a potassium cation in a sandwich arrangement via two 15-crown-5 ether rings within the same molecule. The cooperation of the two small crown ether moieties allows the entrapment of the non-ideal potassium ion. The reaction of the parent thiosemicarbazone ligand 3,4-(C
8 H16 O5 )C6 H3 C(Me)=NN-(H)C(=S)NHMe, 1 , containing the crown ether ring, with K2 [PtCl4 ], or alternatively with PtCl2 (DMSO)2 , and subsequent treatment with the diphosphanes Ph2 PCH2 PPh2 (dppm) and Ph2 PC(=CH2 )PPh2 (vdpp) produced the double nuclear platinacycles 3a , 3b , and 4 , probably via formation of the 2a and 2b intermediates. Complex 3a with the K+ cation in a sandwich coordination was slightly mixed with 3b lacking any K+ . Alternatively, reaction of 1 with K2 [PtCl4 ] or with PtCl2 (DMSO)2 followed by the diphosphane Ph2 PC(=CH2 )PPh2 (vdpp) only gave the dinuclear phosphane-bridged compound 4 ; this highlights the importance of choosing the right diphosphane ligand. Density functional theory calculations (B3LYP-D3/LANL2DZ-ECP-6.311++G**) revealed similar affinities for both dppm and vdpp derivatives to coordinate potassium cations. Crystal structure analysis was performed for compounds 3a and 4 ., Competing Interests: The authors declare no competing financial interest., (© 2022 The Authors. Published by American Chemical Society.)- Published
- 2022
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19. Predictors of metformin monotherapy failure in gestational diabetes mellitus.
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Benido Silva V, Fonseca L, Pereira MT, Vilaverde J, Pinto C, Pichel F, Almeida MDC, and Dores J
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Objective: Metformin has emerged as a safe and effective pharmacological alternative to insulin in gestational diabetes mellitus (GDM), being associated with lower maternal weight gain and hypoglycemia risk. Nevertheless, glycemic control is unaccomplished in a considerable proportion of women only treated with metformin. We aim to determine the metformin monotherapy failure rate in GDM and to identify predictors of its occurrence., Design and Methods: This was a retrospective multicenter study including pregnant women with GDM patients who started metformin as a first-line pharmacological treatment (n = 2891). A comparative analysis of clinical and analytical data between the group of women treated with metformin monotherapy and those needing combined therapy with insulin was performed., Results: In 685 (23.7%) women with GDM, combined therapy to achieve adequate glycemic control was required. Higher pregestational BMI (OR 1.039; CI 95% 1.008-1.071; P-value = 0.013), higher fasting plasma glucose (PG) levels in oral glucose tolerance test (OGTT) (OR 1.047; CI 95% 1.028-1.066; P-value <0.001) and an earlier gestational age (GA) at metformin introduction (0.839; CI 95% 0.796-0.885, P-value < 0.001) were independent predictive factors for metformin monotherapy failure. The best predictive cutoff values were a fasting PG in OGTT ≥87 mg/dL and GA at metformin introduction ≤29 weeks., Conclusions: In 685 (23.7%) women, combined therapy with insulin to reach glycemic control was required. Higher pre-gestational BMI, fasting PG levels in OGTT ≥87 mg/dL and introduction of metformin ≤29 weeks of GA were independent predictive factors for metformin monotherapy failure. The early recognition of these characteristics can contribute to the establishment of individualized therapeutic strategies and attain better metabolic control during pregnancy.
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- 2022
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20. Severe Hyperthyroidism and Complete Hydatidiform Mole in Perimenopausal Woman: Case Report and Literature Review.
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Da Silva Santos T, Santos Monteiro S, Pereira MT, Garrido S, Leal M, Andrade C, Vilaverde J, and Dores J
- Abstract
Gestational trophoblastic disease (GTD) represents a heterogeneous group of disorders within placental trophoblastic cells that are rather rare in perimenopausal ages. One of its complications is the development of secondary clinical hyperthyroidism, which can be potentially complicated if not properly and early recognized. We report the case of a 50-year-old perimenopausal woman, gravida 2 para 2, who presented to the emergency department with severe acute lower abdominal pain and abnormal uterine bleeding for one month. She also reported abnormal sweating and palpitation for a one-week duration and amenorrhea for the previous three months. Abdominal examination showed a pelvic mass resembling a 15-week sized uterus. Serum β-hCG levels were strongly increased, and abdomen ultrasound displayed an enlarged uterus with "snow-storm" features, compatible with the diagnosis of GTD. Laboratory data revealed suppressed TSH levels and high free thyroxine and free triiodothyronine levels (4 and 1.5 times above the upper limit of normality, respectively). Thyrotropin-receptor antibodies (TRAb) levels were negative, and thyroid ultrasound excluded major structural disease. She was managed with anti-thyroid drugs, Lugol's iodine, beta-blockers, and steroids during preoperative care. Thereafter, she underwent surgery, being diagnosed with a hydatidiform mole postoperatively. Her thyroid function returned to normal after three months, without the further need for antithyroid drugs. This case highlights the importance of considering GTD as an aetiology for thyrotoxicosis in perimenopausal women, especially in the absence of findings suggesting primary thyroid disease., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2022, Da Silva Santos et al.)
- Published
- 2022
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21. Evaluation of mesalazine polymeric conjugate in the treatment of actinic proctitis in rats.
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Nunes VRT, Vidigal PVT, Pereira MT, Ladeira LCD, Caliari MV, Oliveira FMS, Cesar ALA, Faraco AAG, Barbuto RC, and Duval-Araujo I
- Subjects
- Administration, Oral, Animals, Anti-Inflammatory Agents, Non-Steroidal therapeutic use, Female, Mesalamine therapeutic use, Rats, Rats, Wistar, Rectum, Colitis, Ulcerative drug therapy, Proctitis drug therapy
- Abstract
Purpose: The present study aimed at testing a new formulation of mesalazine linked to chondroitin sulfate and its components alone in the treatment of actinic proctitis in rats., Methods: Forty-seven female Wistar rats were submitted to pelvic radiation and divided into eight groups: control A, mesalazine A, chondroitin A, and conjugate A, gavage of the according substance two weeks after irradiation and sacrifice three weeks after oral treatment; control C, mesalazine C, chondroitin C, and conjugate C, sacrifice six weeks after oral treatment. The rectum was submitted to histological characterization for each of the findings: inflammatory infiltrate, epithelial degeneration, mucosal necrosis, and fibrosis., Results: The inflammatory infiltrate was more intense in chondroitin A, mesalazine A, and conjugate C. The collagen deposition was less intense in chondroitin A, and mesalazine A, and more intense in control C., Conclusions: Mesalazine and chondroitin alone were efficacious in inducing a delayed inflammatory response, hence reducing the late fibrosis. The conjugate was able to induce an ever more delayed inflammatory response.
- Published
- 2021
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22. Mild periconceptional hyperglycemia: predictor of adverse fetomaternal outcomes in gestational diabetes?
- Author
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Saraiva M, Fonseca L, Santos T, Vilaverde J, Pereira MT, Pichel F, Pinto C, Almeida MC, and Dores J
- Subjects
- Blood Glucose, Female, Glucose Tolerance Test, Humans, Pregnancy, Pregnancy Trimester, First, Pregnancy Trimester, Second, Diabetes, Gestational diagnosis, Diabetes, Gestational epidemiology, Hyperglycemia complications, Hyperglycemia epidemiology
- Abstract
Aim: To clarify whether mild first trimester hyperglycaemia (characteristic of early-onset GDM) is associated with higher incidence of congenital malformations and other adverse fetomaternal outcomes compared to women with second trimester hyperglycaemia (later-onset GDM)., Design and Methods: We analyzed the Portuguese National GDM database, containing data collected between 2011 and 2017. Two study groups were defined: Group 1-Women with GDM diagnosed during the first trimester (with fasting glycemia ≥ 92 and < 126 mg/dL); Group 2-Women with GDM diagnosed after the first 12 weeks of gestation, with either fasting glycemia or oral glucose tolerance test, according to the International Association of Pregnancy and Diabetes Study Group criteria. The fetomaternal characteristics of each group were compared., Results: A total of 18.518 pregnant women diagnosed with GDM were included which 34.4% of them belonged to Group 1. Pregnant women from this group were significantly younger and had a higher median BMI than the women from the other group. Overall, there was no significant differences in maternal morbidity parameters between groups. Non-evolutive pregnancies were significantly more frequent along the present gestation in the group 1 (1.1% vs. 0.1%, p < 0.001), as was fetal death (0.6% vs. 0.2%, p < 0.001). Congenital malformations did not differ significantly between groups (3.2% vs. 2.8%, p = 0.155)., Conclusions: The mild near conceptional hyperglycaemic state characteristic of an early-onset GDM seems to be associated with an increased prevalence of non-evolutive pregnancies and foetal deaths when compared to later-onset GDM., (© 2021. Springer-Verlag Italia S.r.l., part of Springer Nature.)
- Published
- 2021
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23. Nephrotic Syndrome as a Cause of Transient Clinical Hypothyroidism.
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Benido Silva V, Pereira MT, Moreira CL, Santos Monteiro S, Inácio I, and Cardoso MH
- Abstract
Nephrotic syndrome may trigger the onset of hypothyroidism, promoting massive urinary protein losses including thyroxine (T4) and triiodothyronine (T3) along with their binding proteins. At an early stage, a clinical and biochemical euthyroid state is expected. However, in patients with prolonged and severe proteinuria, especially with concomitant low thyroid reserve, urinary losses of free and protein-bound thyroid hormones are sufficiently pronounced to induce a subclinical or overt hypothyroidism. Despite its high prevalence in clinical practice, the literature lacks case reports of newly diagnosed clinical hypothyroidism due to NS in adults, making this condition under-recognized. We report a case of a 23-year-old man with previous normal thyroid function who developed overt hypothyroidism due to a severe nephrotic syndrome, requiring supplementation with levothyroxine (LT). After the patient had undergone bilateral nephrectomy, treatment with LT was discontinued and thyroid function normalized., Competing Interests: The authors declare that they have no conflicts of interest., (Copyright © 2021 Vânia Benido Silva et al.)
- Published
- 2021
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24. Chemical Composition of Magonia pubescens Essential Oils and Gamma-Radiation Effects on Its Constituents and Cytotoxic Activity in Leukemia and Breast Cancer Model.
- Author
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Moraes ARA, Camargo KC, Simões MOM, Ferraz VP, Pereira MT, Evangelista FCG, Sabino AP, Duarte LP, Alcântara AFC, and de Sousa GF
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- Antineoplastic Agents, Phytogenic chemistry, Antineoplastic Agents, Phytogenic isolation & purification, Cell Line, Tumor, Cell Proliferation drug effects, Cell Survival drug effects, Drug Screening Assays, Antitumor, Humans, Oils, Volatile chemistry, Oils, Volatile isolation & purification, Plant Extracts chemistry, Plant Extracts isolation & purification, Antineoplastic Agents, Phytogenic pharmacology, Oils, Volatile pharmacology, Plant Extracts pharmacology, Sapindaceae chemistry
- Abstract
Magonia pubescens A. St.-Hil. is a Brazilian species often used in ethnopharmacology for wound and pain healing and seborrhea treatment. For the first time, essential oils (EOs) obtained from M. pubescens inflorescences were studied. The plant materials (Montes Claros, Brazil, 2018) were submitted to different gamma-radiation doses and their chemical compositions were analyzed by GC/MS and GC-FID. The cytotoxic activity of the EOs was evaluated against K562 and MDA-MB-231 cancer cell lines. A total of 30 components were identified, being 24 compounds detected for the first time in M. pubescens. The main obtained components were hotrienol (35.9 %), cis-linalool oxide (17.0 %) and trans-linalool oxide (10.2 %). The chemical composition of the EO was slightly affected by the applied radiation doses. Irradiated and non-irradiated EOs showed cytotoxic activity against both cell lines and the non-irradiated EO sample was the most active against the K562 cell lines (IC
50 =22.10±1.98)., (© 2021 Wiley-VHCA AG, Zurich, Switzerland.)- Published
- 2021
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25. Design and implementation of the Professional Wellbeing Programme of the Medical Council Association of Uruguay.
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Dapueto JJ, Klasse E, Campos N, Rodríguez Andrada B, Romero Agüit S, Braquehais MD, Tolchinsky G, Pereira MT, Sarubbo L, Ceroni C, Sánchez N, and Blanc L
- Abstract
Multiple studies have reported a high prevalence of mental health problems among male and female physicians. Although doctors are reluctant to seek professional help when suffering from a mental disorder, specialised services developed specifically to treat their mental health problems have reported promising results. The purpose of this article is to describe the design and implementation of the Professional Wellbeing Programme (Programa de Bienestar Profesional) of the Uruguayan Medical Association (Colegio Médico del Uruguay). The context, inputs, activities and some of the outputs are described according to a case study design. The main milestones in the implementation of the programme are also outlined, as well as the enabling elements, obstacles and main achievements. Emphasis will be placed on the importance of international collaboration to share experiences and models, how to design the care process to promote doctors' access to psychiatric and psychological care, the need for them to be flexible and dynamic in adapting to new and changing circumstances, such as the COVID-19 pandemic, and to work in parallel with the medical regulatory bodies. It is hoped that the experience described in this work may be of use to other Latin American institutions interested in developing mental health programmes for doctors., (Copyright © 2021 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España, S.L.U. All rights reserved.)
- Published
- 2021
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26. Being alert on thyroid function tests interpretation: A case report of heterophile antibody interference in serum in a pregnant woman.
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Fonseca L, Benido VS, Pessanha J, Pereira MT, Vilaverde J, and Dores J
- Subjects
- Adult, Diagnostic Errors, Female, Humans, Pregnancy, Thyrotropin blood, Thyroxine blood, Triiodothyronine blood, Antibodies, Heterophile blood, Thyroid Function Tests
- Published
- 2021
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27. In Vitro and In Vivo Effect of Palladacycles: Targeting A2780 Ovarian Carcinoma Cells and Modulation of Angiogenesis.
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Reigosa-Chamorro F, Raposo LR, Munín-Cruz P, Pereira MT, Roma-Rodrigues C, Baptista PV, Fernandes AR, and Vila JM
- Subjects
- Angiogenesis Inhibitors chemical synthesis, Animals, Apoptosis drug effects, Autophagy drug effects, Cell Line, Tumor, Cell Proliferation drug effects, Chickens, Coordination Complexes chemical synthesis, Embryo, Nonmammalian drug effects, Female, Fibroblasts drug effects, G1 Phase Cell Cycle Checkpoints drug effects, Humans, Membrane Potential, Mitochondrial drug effects, Mitochondria drug effects, Organometallic Compounds chemical synthesis, Ovarian Neoplasms drug therapy, Palladium chemistry, Reactive Oxygen Species metabolism, Angiogenesis Inhibitors pharmacology, Coordination Complexes pharmacology, Organometallic Compounds pharmacology
- Abstract
Palladacycles are versatile organometallic compounds that show potential for therapeutic use. Here are described the synthesis and characterization of mono- and dinuclear palladacycles bearing diphosphines. Their biological effect was investigated in A2780, an ovarian-derived cancer line, and in normal dermal fibroblasts. The compounds displayed selective cytotoxicity toward the A2780 cell line. Compound 3 decreased the cell viability through cell cycle retention in G0/G1, triggered apoptosis through the intrinsic pathway, and induced autophagy in A2780 cells. Compound 9 also induced cell cycle retention, apoptosis, and cellular detachment. Notably, compound 9 induced the production of intracellular reactive oxygen species (ROS). Our work demonstrated that compound 3 enters A2780 cells via active transport, which requires energy, while compound 9 enters A2780 cells mostly passively. The potential effect of palladacycles in angiogenesis was investigated for the first time in an in vivo chorioallantoic membrane model, showing that while compound 3 displayed an antiangiogenic effect crucial to fighting cancer progression, compound 9 promoted angiogenesis. These results show that palladacycles may be used in different clinical applications where pro- or antiangiogenic effects may be desirable.
- Published
- 2021
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28. Hypoxia-inducible factor (HIF1alpha) inhibition modulates cumulus cell function and affects bovine oocyte maturation in vitro†.
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Turhan A, Pereira MT, Schuler G, Bleul U, and Kowalewski MP
- Subjects
- Animals, Anti-Bacterial Agents pharmacology, Cells, Cultured, Echinomycin pharmacology, Female, Gene Expression Regulation drug effects, Hypoxia-Inducible Factor 1, alpha Subunit genetics, Hypoxia-Inducible Factor 1, alpha Subunit metabolism, Mustard Compounds pharmacology, Oocytes physiology, Phenylpropionates pharmacology, Cattle, Cumulus Cells physiology, Hypoxia-Inducible Factor 1, alpha Subunit antagonists & inhibitors, In Vitro Oocyte Maturation Techniques veterinary, Oocytes drug effects
- Abstract
Various metabolic and hormonal factors expressed in cumulus cells are positively correlated with the in vitro maturation (IVM) of oocytes. However, the role of hypoxia sensing both during maturation of cumulus-oocyte complexes (COCs) as well as during the resumption of meiosis remains uncertain. HIF1alpha plays major roles in cellular responses to hypoxia, and here we investigated its role during bovine COC maturation by assessing the expression of related genes in cumulus cells. COCs were divided into the following groups: immature (control), in vitro matured (IVM/control), or matured in the presence of a blocker of HIF1alpha activity (echinomycin, IVM/E). We found an inhibition of cumulus cell expansion in IVM/E, compared with the IVM/control. Transcript levels of several factors (n = 13) were assessed in cumulus cells. Decreased expression of HAS2, TNFAIP6, TMSB4, TMSB10, GATM, GLUT1, CX43, COX2, PTGES, and STAR was found in IVM/E (P < 0.05). Additionally, decreased protein levels were detected for STAR, HAS2, and PCNA (P < 0.05), while activated-Caspase 3 remained unaffected in IVM/E. Progesterone output decreased in IVM/E. The application of PX-478, another blocker of HIF1alpha expression, yielded identical results. Negative effects of HIF1alpha suppression were further observed in the significantly decreased oocyte maturation and blastocyst rates from COCs matured with echinomycin (P < 0.05) or PX-478 (P < 0.05). These results support the importance of HIF1alpha for COC maturation and subsequent embryo development. HIF1alpha is a multidirectional factor controlling intercellular communication within COCs, steroidogenic activity, and oocyte development rates, and exerting effects on blastocyst rates., (© The Author(s) 2020. Published by Oxford University Press on behalf of Society for the Study of Reproduction. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2021
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29. Meep, a Novel Regulator of Insulin Signaling, Supports Development and Insulin Sensitivity via Maintenance of Protein Homeostasis in Drosophila melanogaster .
- Author
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Pereira MT, Brock K, and Musselman LP
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- Animals, Proteostasis, Signal Transduction, Diabetes Mellitus, Type 2, Drosophila Proteins genetics, Drosophila Proteins metabolism, Drosophila melanogaster genetics, Drosophila melanogaster metabolism, Insulin metabolism, Insulin Resistance genetics
- Abstract
Insulin signaling is critical for developmental growth and adult homeostasis, yet the downstream regulators of this signaling pathway are not completely understood. Using the model organism Drosophila melanogaster , we took a genomic approach to identify novel mediators of insulin signaling. These studies led to the identification of Meep, encoded by the gene CG32335 Expression of this gene is both insulin receptor- and diet-dependent. We found that Meep was specifically required in the developing fat body to tolerate a high-sugar diet (HSD). Meep is not essential on a control diet, but when reared on an HSD, knockdown of meep causes hyperglycemia, reduced growth, developmental delay, pupal lethality, and reduced longevity. These phenotypes stem in part from Meep's role in promoting insulin sensitivity and protein stability. This work suggests a critical role for protein homeostasis in development during overnutrition. Because Meep is conserved and obesity-associated in mammals, future studies on Meep may help to understand the role of proteostasis in insulin-resistant type 2 diabetes., (Copyright © 2020 Pereira et al.)
- Published
- 2020
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30. Progesterone receptor blockers: historical perspective, mode of function and insights into clinical and scientific applications.
- Author
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Kowalewski MP, Pereira MT, Papa P, and Gram A
- Subjects
- Animals, Biomedical Research, Dogs, Rabbits, Ruminants, Hormone Antagonists, Receptors, Progesterone antagonists & inhibitors, Receptors, Progesterone chemistry, Receptors, Progesterone metabolism, Veterinary Drugs
- Abstract
Antigestagens (antiprogestins) are functional competitors of progesterone (P4) that prevent P4 from mediating its biological functions either by suppressing its production or blocking its function. Among the latter are progesterone antagonists, competitors of P4 binding to its nuclear receptor PGR, which have found application in both human and veterinary medicine, in particular in small animal practice for the prevention of nidation and the interruption of pregnancy. Depending on their mode of action, progesterone receptor antagonists can be divided into 2 classes. Class I antagonists bind to the PGR but fail to induce its binding to promoters of target genes (competitive inhibitors). Class II antigestagens, including aglepristone used in veterinary medicine, bind to the PGR, activate its association with a promoter, but interfere with the downstream signalling cascades, e. g., by recruiting transcriptional repressors. They act thereby as transdominant repressors exerting negative effects on target gene expression. Importantly for experimental sciences, as active antagonists, class II antagonists do not require the presence of the natural ligand for their action. Besides their clinical application, antigestagens are used in research for investigating P4-dependent physiological and pathological processes. Here an overview of the history and the current usage of progesterone receptor antagonists in veterinary medicine and research is presented., Competing Interests: The authors confirm that they do not have any conflict of interest., (Thieme. All rights reserved.)
- Published
- 2020
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31. Chemistry of Tetradentate [ C , N : C , N ] Iminophosphorane Palladacycles: Preparation, Reactivity and Theoretical Calculations.
- Author
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Munín-Cruz P, Reigosa F, Rúa-Sueiro M, Ortigueira JM, Pereira MT, and Vila JM
- Abstract
A theoretical and experimental study of tetradentate [C,N : C,N] iminophosphorane palladacycles was carried out for the purpose of elucidating their behavior as compared to the parent Schiff base analogues to determine the prospect of encountering new A-frame structures for the iminophosphorane derivatives. The DFT calculations were in agreement with the experimental results regarding the performance of these ligands. New insights into the chemistry of the related dinuclear species have been obtained., Competing Interests: The authors declare no conflict of interest., (© 2020 The Authors. Published by Wiley-VCH GmbH.)
- Published
- 2020
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32. Maternal and Sociodemographic Factors Influence the Consumption of Ultraprocessed and Minimally-Processed Foods in Pregnant Women.
- Author
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Pereira MT, Cattafesta M, Santos Neto ETD, and Salaroli LB
- Subjects
- Adolescent, Adult, Brazil epidemiology, Cross-Sectional Studies, Educational Status, Fast Foods, Female, Humans, Maternal Age, Maternal Behavior, Pregnancy, Prenatal Care, Smoking epidemiology, Socioeconomic Factors, Young Adult, Feeding Behavior, Pregnant Women psychology
- Abstract
Objective: To analyze the consumption of minimally-processed and ultraprocessed foods in relation with sociodemographic variables, maternal habits, educational activity received during prenatal care and clinical history., Methods: A cross-sectional, analytical and descriptive study with 1,035 pregnant women who lives in the municipalities of the metropolitan region of Grande Vitória, Espírito Santo, Brazil (RMGV-ES), and who were hospitalized in establishments of the Unified Health System (SUS) due to childbirth (April-September 2010). The food frequency questionnaire, pregnant woman's card and information from the medical records of the health facility unit were analyzed. The Chi-square test and the binary logistic regression model were used to investigate the association between the independent variables and the consumption of ultraprocessed foods., Results: It was identified that pregnant women ≤19 years of age were 2.9 times more likely to consume ultraprocessed foods (confidence interval [CI] 95% 1.683-5.168, p < 0.001), while those ≥35 years old were less likely to consume them (odds ratio [OR] 0.265, 95% CI 0.105-0.666, p = 0.005). Maternal smoking increased the odds of consumption of ultraprocessed foods by 2.2 times (95% CI 1.202-4.199, p = 0.011) and pregnant women who did not obtain information on healthy food during prenatal care presented 54.1% less chances of consuming minimally-processed foods (OR 0.459, 95% CI 0.307-0.687, p < 0.001)., Conclusion: Smoking during the gestational period and being a teenager are factors that influence the consumption of ultraprocessed foods of pregnant women. Race/color, head of household, age group, receiving of information about feeding in the prenatal period and not having smoked in gestation determined the consumption of minimally-processed foods., Competing Interests: The authors have no conflict of interests to declare., (Thieme Revinter Publicações Ltda Rio de Janeiro, Brazil.)
- Published
- 2020
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33. Evolutionary trends in bacteria isolated from moderate and severe diabetic foot infections in a Portuguese tertiary center.
- Author
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Machado C, Teixeira S, Fonseca L, Abreu M, Carvalho A, Pereira MT, Amaral C, Freitas C, Ferreira L, Neto HR, Loureiro L, Martins J, Costa L, Gomes A, Pereira J, Guimarães R, Pinto S, and Carvalho R
- Subjects
- Aged, Aged, 80 and over, Anti-Bacterial Agents therapeutic use, Diabetic Foot pathology, Enterobacteriaceae, Female, Humans, Male, Middle Aged, Portugal, Pseudomonas aeruginosa, Retrospective Studies, Staphylococcus aureus, Tertiary Care Centers, Ulcer microbiology, Ulcer pathology, Diabetic Foot microbiology
- Abstract
Introduction: Diabetic Foot infections (DFI) are a major cause of hospitalization in patients with diabetes. The microbiological study of diabetic ulcers is essential to adequate antibiotic therapy and to minimize the selection of resistant microorganisms. The aim of this study was to characterize and to compare the evolution of isolated microorganisms between the biennium 2010-2011 and 2016-2017, in hospitalized patients with DFI., Material and Methods: Retrospective evaluation of the clinical and analytical data of patients who were admitted due to DFI in 2010-2011 (group 2010/11) and 2016-2017 (group 2016/17). Only the first hospitalization for each patient was included. An adequate descriptive and comparative statistical analysis was performed., Results: There were 274 admissions due to DFI, 151 in 2010/11 and 123 in 2016/17. There was an increase in admissions due to neuroischemic DFI (51.0% in 2010/11 to 61.8% in 2016/17, p = 0.048). Staphylococcus aureus (SA) was the most common isolate in 2010/11 (26.7%). In 2016/17 most cultures were mixed polymicrobial and isolation of Enterobacteriaceae and Pseudomonas aeruginosa increased from 2010/11 to 2016/17 (15.9% to 30.6%, p = 0.001, and 9.1% to 13.7%, p = 0.048, respectively)., Conclusion: There was an increase in the prevalence of neuroischemic DFU. The Enterobacteriaceae family replaced SA as the most prevalent pathogen in DFI, with an increase in the isolation of gram-negative microorganisms and mixed polymicrobial cultures. Chronic neuroischemic infected ulcers usually present distinct bacterial isolates; knowledge about the most common agents is warranted in order to better select empiric antibiotic therapy., Competing Interests: Declaration of competing interest The authors of this manuscript certify that they have NO affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript. There was no funding for the manuscript., (Copyright © 2020. Published by Elsevier Ltd.)
- Published
- 2020
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34. The effects of intrinsic and extrinsic acids on nanofilled and bulk fill resin composites: Roughness, surface hardness, and scanning electron microscopy analysis.
- Author
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Alencar MF, Pereira MT, De-Moraes MDR, Santiago SL, and Passos VF
- Subjects
- Composite Resins chemistry, Dental Materials chemistry, Hardness, Microscopy, Electron, Scanning, Surface Properties, Acids chemistry, Composite Resins analysis, Dental Materials analysis, Materials Testing
- Abstract
The objective of this study was to examine the effects of extrinsic or intrinsic acids on nanofilled and bulk fill resin materials in vitro. A total of 90 disks were prepared using dental restorative material (Filtek Z350XT, GrandioSO, Filtek Bulk Fill, X-tra fil). Thirty disks of each material were sub-divided into three groups (n = 10) that were immersed for 7 days in deionized water (DW), 5% citric acid (CA-pH 2.1), or 0.1% hydrochloric acid (HCl-pH = 1.2). Surface hardness and roughness (stylus profilometer by R
a parameter) analysis were performed before and after immersion. Morphological changes were evaluated by scanning electron microscopy. The data were analyzed by two-way ANOVA and Tukey's test (α = 0.05). All tested materials did not show significant differences in the effects of the DW, CA, or HCl solutions on surface roughness (p = .368). Likewise, the hardness loss was not affected by the solutions tested (p = .646), but there was a difference in the resin type (p = .002). Filtek Bulk Fill resin hardness was less affected, while Filtek Z350XT and GrandioSO presented the most hardness loss after 7 days of solution immersion. In terms of this experimental study, the results demonstrate the effectiveness of the mechanical properties (roughness and hardness surface) of nanofilled and bulk fill resin materials to resist erosion from extrinsic and intrinsic acids, therefore being potential candidates for dental applications., (© 2019 Wiley Periodicals, Inc.)- Published
- 2020
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35. C-type natriuretic peptide signaling in human follicular environment and its relation with oocyte maturation.
- Author
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Casalechi M, Dias JA, Pinto LV, Lobach VN, Pereira MT, Cavallo IK, Reis AM, Dela Cruz C, and Reis FM
- Subjects
- Adult, Cross-Sectional Studies, Cumulus Cells metabolism, Female, Follicular Fluid metabolism, Granulosa Cells metabolism, Humans, Meiosis, Ovarian Follicle metabolism, Prospective Studies, Signal Transduction, Down-Regulation, Natriuretic Peptide, C-Type genetics, Natriuretic Peptide, C-Type metabolism, Oocytes physiology, Receptors, Atrial Natriuretic Factor genetics, Receptors, Atrial Natriuretic Factor metabolism
- Abstract
Studies in mice have shown that C-type natriuretic peptide (CNP) is produced by granulosa cells and contributes to ovarian follicle growth and oocyte meiotic arrest until the preovulatory LH surge. In humans, the relationship between intraovarian CNP levels and oocyte meiotic resumption is unknown. The aim of this study was to investigate whether CNP and its receptor NPR2 are expressed in human ovarian follicles and if their levels change according to the meiotic phase of oocytes. We collected follicular fluid (FF) and luteinized granulosa cells (LGC) from follicle pools (n = 47), and FF, LGC and cumulus cells (CC) from individual follicles (n = 96) during oocyte pickup for in vitro fertilization. There was a positive linear correlation between CNP levels in FF pools and basal antral follicle counting (r
s = 0.458; p = 0.002), number of preovulatory follicles >16 mm (rs = 0.361; p = 0.016) and number of oocytes retrieved (rs = 0,378; p = 0.011) and a negative correlation between CNP levels in FF pools and the percentage of mature (MII) oocytes retrieved (rs = -0.39; p = 0.033). FF CNP levels in follicles containing MII oocytes were significantly lower than in follicles containing immature (MI) oocytes (median = 0.44 vs. 0.57 ng/mL, p < 0.05). Accordingly, the CNP precursor gene NPPC was 50% less expressed in LGC from follicles containing MII oocytes than in follicles containing MI oocytes (p < 0.01). In addition, NPR2 mRNA was down-regulated in CC surrounding MII oocytes (60% reduction, p < 0.01). CNP signaling is downregulated in human ovarian follicles containing mature oocytes. Further studies should clarify whether CNP signaling is essential to keep oocyte meiotic arrest in humans., (Copyright © 2019 Elsevier B.V. All rights reserved.)- Published
- 2019
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36. Caspase-3 gene expression in human luteinized granulosa cells is inversely correlated with the number of oocytes retrieved after controlled ovarian stimulation.
- Author
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Lobach VN, Casalechi M, Dela Cruz C, Pereira MT, Del Puerto HL, and Reis FM
- Subjects
- Caspase 3 genetics, Chorionic Gonadotropin pharmacology, Cohort Studies, Female, Fertility Agents, Female pharmacology, Follicle Stimulating Hormone pharmacology, Gene Expression Regulation, Enzymologic drug effects, Gonadotropin-Releasing Hormone pharmacology, Humans, Oocytes metabolism, Caspase 3 metabolism, Gonadotropin-Releasing Hormone analogs & derivatives, Granulosa Cells enzymology, Nafarelin pharmacology, Oocytes physiology, Ovulation Induction methods
- Abstract
Granulosa cells control oocyte maturation through paracrine signalling and changes to the microenvironment around the oocyte. Apoptosis occurs as a physiological mechanism of granulosa cell renewal, but how it relates with the ovarian response to induced ovulation is still unclear. Therefore, this study evaluated apoptosis-related gene expression levels in granulosa cells of patients undergoing controlled ovarian stimulation. We enrolled prospectively 59 consecutive IVF patients referred to a tertiary academic hospital for couple infertility treatment. Luteinized granulosa cells were isolated from follicular fluid and the RNA was extracted, reverse-transcribed and the gene expression of apoptosis inducers (caspase-3, caspase-8 and bax) and inhibitor (Bcl-2) was quantified by real-time polymerase chain reaction. Caspase-3 gene expression correlated negatively with the number of pre-ovulatory follicles (Spearman's r = -0.308), the number of collected oocytes (r = -0.451), the number of mature oocytes (r = -0.526), the number of fertilized oocytes (r = -0.439) and the number of viable embryos (r = -0.443, all statistically significant at p < 0.02 level). No such associations were found with caspase-8, bax or bcl-2. These preliminary findings suggest that increased caspase-3 gene expression in granulosa cells is associated with a worse ovulatory response in humans.
- Published
- 2019
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37. Effect of dietary additives on intestinal permeability in both Drosophila and a human cell co-culture.
- Author
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Pereira MT, Malik M, Nostro JA, Mahler GJ, and Musselman LP
- Subjects
- Alkaline Phosphatase metabolism, Animals, Cell Line, Coculture Techniques, Dietary Sugars pharmacology, Drosophila Proteins metabolism, Humans, Intestines microbiology, Microbiota drug effects, Permeability, Phenotype, Polysorbates pharmacology, Sodium Chloride, Dietary pharmacology, Sugars metabolism, Ubiquitin-Protein Ligases metabolism, Diet, Drosophila melanogaster cytology, Food Additives pharmacology, Intestines cytology
- Abstract
Increased intestinal barrier permeability has been correlated with aging and disease, including type 2 diabetes, Crohn's disease, celiac disease, multiple sclerosis and irritable bowel syndrome. The prevalence of these ailments has risen together with an increase in industrial food processing and food additive consumption. Additives, including sugar, metal oxide nanoparticles, surfactants and sodium chloride, have all been suggested to increase intestinal permeability. We used two complementary model systems to examine the effects of food additives on gut barrier function: a Drosophila in vivo model and an in vitro human cell co-culture model. Of the additives tested, intestinal permeability was increased most dramatically by high sugar. High sugar also increased feeding but reduced gut and overall animal size. We also examined how food additives affected the activity of a gut mucosal defense factor, intestinal alkaline phosphatase (IAP), which fluctuates with bacterial load and affects intestinal permeability. We found that high sugar reduced IAP activity in both models. Artificial manipulation of the microbiome influenced gut permeability in both models, revealing a complex relationship between the two. This study extends previous work in flies and humans showing that diet can play a role in the health of the gut barrier. Moreover, simple models can be used to study mechanisms underlying the effects of diet on gut permeability and function.This article has an associated First Person interview with the first author of the paper., Competing Interests: Competing interestsThe authors declare no competing or financial interests., (© 2018. Published by The Company of Biologists Ltd.)
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- 2018
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38. Palladium iminophosphorane complexes: the pre-cursors to the missing link in triphenylphosphane chalcogenide metallacycles.
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Fernández-Figueiras A, Lucio-Martínez F, Munín-Cruz P, Polo-Ces P, Reigosa F, Adams H, Pereira MT, and Vila JM
- Abstract
Herein we report on the synthesis, characterization and the ensuing chemistry of iminophosphorane palladacycles. Treatment of Ph3P[double bond, length as m-dash]N-(2-OHC6H4), 1, with sodium tetrachloropalladate gives 2 with the ligand as terdentate [C,N,O] allowing for only one μ-Cl ligand bonding the metal centers, resulting in a dinuclear complex. Treatment of 2 with PPh3 gives the mononuclear complex 3, whereas the reaction of 2 with diphosphanes Ph2P(CH2)nPPh2 in 1 : 2 ratio gives mixtures of 4 and 5 (n = 2) and 6 and 7 (n = 3). From them, the mononuclear complexes 4 and 6, and the dinuclear compounds, 5 and 7, were obtained with the parent ligand as bidentate [C,N]. The former two are of zwitterionic nature void of any counterion, with the phosphane ligand in the chelating mode. In a remarkable case of chemical serendipity, a solution of 2 left to stand produced crystals of complex 8: this is the missing link in the series of triphenylphosphane chalcogenide metallacycles. The experiment is repeatable; however, direct metallation of triphenylphosphane oxide was not possible.
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- 2018
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39. Inhibiting constitutive neurogenesis compromises long-term social recognition memory.
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Pereira-Caixeta AR, Guarnieri LO, Medeiros DC, Mendes EMAM, Ladeira LCD, Pereira MT, Moraes MFD, and Pereira GS
- Subjects
- Animals, Antineoplastic Agents, Alkylating pharmacology, Behavior, Animal drug effects, Behavior, Animal physiology, Behavior, Animal radiation effects, Cell Proliferation drug effects, Cell Proliferation radiation effects, Glycoside Hydrolases pharmacology, Hippocampus drug effects, Hippocampus radiation effects, Male, Memory, Long-Term drug effects, Memory, Long-Term radiation effects, Mice, Neurogenesis drug effects, Neurogenesis radiation effects, Olfactory Bulb drug effects, Olfactory Bulb radiation effects, Radiation Injuries, Experimental, Recognition, Psychology drug effects, Recognition, Psychology radiation effects, Temozolomide pharmacology, Cell Proliferation physiology, Hippocampus physiology, Memory, Long-Term physiology, Neurogenesis physiology, Olfactory Bulb physiology, Recognition, Psychology physiology, Social Perception
- Abstract
Although the functional role for newborn neurons in neural circuits is still matter of investigation, there is no doubt that neurogenesis modulates learning and memory in rodents. In general, boosting neurogenesis before learning, using genetic-target tools or drugs, improves hippocampus-dependent memories. However, inhibiting neurogenesis may yield contradictory results depending on the type of memory evaluated. Here we tested the hypothesis that inhibiting constitutive neurogenesis would compromise social recognition memory (SRM). Male Swiss mice were submitted to three distinct procedures to inhibit neurogenesis: (1) intra-cerebral infusion of Cystosine-β-D-Arabinofuranoside (AraC); (2) intra-peritoneal injection of temozolomide (TMZ) and (3) cranial gamma irradiation. All three methods decreased cell proliferation and neurogenesis in the dentate gyrus of the dorsal (dDG) and ventral hippocampus (vDG), and the olfactory bulb (OB). However, the percentage inhibition diverged between methods and brain regions. Ara-C, TMZ and gamma irradiation impaired SRM, though only gamma irradiation did not cause side effects on weight gain, locomotor activity and anxiety. Finally, we examined the contribution of cell proliferation in vDG, dDG and OB to SRM. The percent of inhibition in the dDG correlates with SRM, independently of the method utilized. This correlation was observed for granular cell layer of OB and vDG, only when the inhibition was induced by gamma irradiation. Animal's performance was restrained by the inhibition of dDG cell proliferation, suggesting that cell proliferation in the dDG has a greater contribution to SRM. Altogether, our results demonstrate that SRM, similarly to other hippocampus-dependent memories, has its formation impaired by reducing constitutive neurogenesis., (Copyright © 2018 Elsevier Inc. All rights reserved.)
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- 2018
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40. The use of platelet-rich plasma (PRP) in the treatment of gastrocnemius strains: a retrospective observational study.
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Borrione P, Fossati C, Pereira MT, Giannini S, Davico M, Minganti C, and Pigozzi F
- Subjects
- Female, Humans, Male, Platelet-Rich Plasma cytology, Retrospective Studies, Muscle, Skeletal abnormalities, Platelet-Rich Plasma metabolism
- Abstract
The aim of the present retrospective observational study was to evaluate the time of functional recovery following a specific combined therapeutic approach characterized by an active exercise therapy carried out immediately after Platelet-rich plasma (PRP) injections for the treatment of the muscular lesion of the distal musculotendinous junction of the gastrocnemius medial head.Medical records of 31 subjects treated with three PRP intra-lesional ultrasound guided injections and 30 patients treated with the standard therapeutic approach (control group) were analyzed. Both groups followed the same rehabilitation therapy. Patients in the control group were able to start active exercise with a significant delay when compared to the PRP treated subjects: 17 ± 7.2 days and 9 ± 3.8 days (p = 0.0001), respectively. This delay was mainly due to the persistence of pain in the subjects in the control group. The time necessary to return to walk without pain was significantly shorter in the PRP treated group: 24.27 ± 12.36 days versus 52.4 ± 20.03 days in the control group (p < 0.001) as well as the time needed to fully return to practice the previous sport activity: 53.33 ± 27.74 days versus 119.3 ± 43.87 days in the control group (p < 0.001).The present study showed that ultrasound guided delivery of PRP into the site of muscle injury has to be considered a valid therapeutic approach with the potentiality of significantly reduce time and costs for reaching a complete functional recovery.
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- 2018
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41. From Chemical Serendipity to Translational Chemistry: New Findings in the Reactivity of Palladacycles.
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Fernández-Figueiras A, Lucio-Martínez F, Munín-Cruz P, Ortigueira JM, Polo-Ces P, Reigosa F, Pereira MT, and Vila JM
- Abstract
In the world of science, in particular the section concerning the field of chemistry, when the results encountered during the experiment do not meet our expectations, our shrewdness may play an important role to open up new unexplored fields that could be much more interesting than what we were seeking. In those cases, our research undergoes an unforeseen shift, delivering novel and challenging results that may altogether alter our point of view and our future work. We have then struck serendipity. Specifically, in our investigation linked to palladacycles we have found that the new trends in their reactivity, as well as in their structure, have been, in many cases, related to this experience, broadening our research scope within this field. Herein, we describe our most relevant findings, which have shed new light upon the reactivity of palladacycles, thus opening new routes that lead to novel unexpected structures.
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- 2018
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42. The chelate-to-bridging shift of phosphane dipalladacycles: convenient synthesis of double A-frame tetranuclear complexes.
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Frieiro-Gomis P, Lucio-Martínez F, Munín-Cruz P, Ortigueira JM, Pereira MT, Polo-Ces P, Vázquez-García D, and Vila JM
- Abstract
Palladacycles of the type [Pd
2 (Ph2 PCH2 PPh2 -P,P)2 (C,N:C,N)] (C,N:C,N = bis(N-2,3,4-trimethoxybenzylidene)-4,4'-sulfonyldianiline or -4,4'-oxydianiline) can undergo a spontaneous slow chelate-to-bridging diphosphane coordination shift in solution. Following this strategy a tailor-made synthetic procedure was devised that culminates in isolation of double A-frame tetranuclear palladium complexes.- Published
- 2018
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43. Underlying Biological Processes in Mild Cognitive Impairment: Amyloidosis Versus Neurodegeneration.
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Santana I, Baldeiras I, Santiago B, Duro D, Freitas S, Pereira MT, Almeida MR, and Oliveira CR
- Subjects
- Adult, Age Factors, Aged, Aged, 80 and over, Amnesia cerebrospinal fluid, Amyloid beta-Peptides cerebrospinal fluid, Biomarkers cerebrospinal fluid, Disease Progression, Female, Follow-Up Studies, Humans, Kaplan-Meier Estimate, Longitudinal Studies, Male, Middle Aged, Models, Neurological, Neuropsychological Tests, Peptide Fragments cerebrospinal fluid, tau Proteins cerebrospinal fluid, Alzheimer Disease cerebrospinal fluid, Amyloidosis cerebrospinal fluid, Cognitive Dysfunction cerebrospinal fluid
- Abstract
The amyloid cascade hypothesis proposes amyloid-β (Aβ) as the earliest and key pathological hallmark of Alzheimer's disease (AD), but this mandatory "amyloid-first pathway" has been contested. Longitudinal studies of mild cognitive impairment (MCI) patients represent an opportunity to investigate the intensity of underlying biological processes (amyloidosis versus neurodegeneration) and their relevance for progression to AD. We re-examined our cohort of amnestic MCI, grouped according to cerebrospinal fluid (CSF) biomarkers, aiming at establishing their prognostic value for Alzheimer-type dementia and testing the hypothetical model of biomarkers sequence, based on the amyloid cascade. Our baseline population consisted of 217 MCI patients, 63% with neurodegeneration markers and 47% with amyloidosis. Within the longitudinal study-group (n = 165), 85 progressed to AD and 80 remained cognitively stable. Age, CSF Aβ42, and t-Tau were identified as the best single predictors of conversion to AD. Regarding MCI classification according to the NIA-AA criteria, the high-AD-likelihood group (HL-both amyloid and neurodegeneration markers) was the most frequent (42%); followed by the Suspected Non-Alzheimer Pathophysiology group (SNAP-26%), the low-AD-likelihood group (LL-negative biomarkers-22%), and the Isolated Amyloid Pathology group (IAP-10%). Risk of progression to AD was higher in HL in relation to the LL group (HR = 6.1, 95% CI = 2.1-18.0, p = 0.001). SNAP and IAP groups were equivalent in terms of risk of progression to AD (IAP: HR = 2.6, 95% CI = 0.7-9.3, p = 0.141; SNAP: HR = 3.1, 95% CI = 1.1-9.6; p = 0.046), but only SNAP was significantly different from the LL group. These results support different neurobiological pathways to AD beyond the amyloid hypothesis, highlighting the alternative "neurodegeneration-first pathway" for further investigation.
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- 2018
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44. Combined effects of gamma radiation doses and sodium nitrite content on the lipid oxidation and color of mortadella.
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Dutra MP, Cardoso GP, Fontes PR, Silva DRG, Pereira MT, Ramos ALS, and Ramos EM
- Subjects
- Color, Gamma Rays, Lipids, Oxidation-Reduction, Sodium Nitrite, Meat Products analysis
- Abstract
The effects of different doses of gamma radiation (0-20kGy) on the color and lipid oxidation of mortadella prepared with increasing nitrite levels (0-300ppm) were evaluated using a central composite rotatable design. Higher radiation doses increased the redox potential, promoted the lipid oxidation and elevating the hue color of the mortadellas. Nevertheless, higher addition of sodium nitrite elevated the residual nitrite content, reduced the lipid oxidation and promoted the increase of redness and the reduce of hue color of the mortadellas, regardless of the radiation dose applied. Nitrite addition had a greater effect than irradiation on the quality parameters evaluated, and even at low levels (∼75ppm), its use decreased the deleterious effects of irradiation at doses as high as 20kGy., (Copyright © 2017 Elsevier Ltd. All rights reserved.)
- Published
- 2017
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45. Characterization of the institutionalization of pharmaceutical services in Brazilian primary health care.
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Souza GS, Costa EA, Barros RD, Pereira MT, Barreto JL, Guerra AA Junior, Acurcio FA, Guibu IA, Álvares J, Costa KS, Karnikowski MGO, Soeiro OM, and Leite SN
- Subjects
- Brazil, Cross-Sectional Studies, National Health Programs, Pharmaceutical Services economics, Pharmaceutical Services organization & administration, Primary Health Care
- Abstract
Objective: To characterize the current stage of the institutionalization of pharmaceutical services in Brazilian cities., Methods: This study is part of the Pesquisa Nacional sobre Acesso, Utilização e Promoção do Uso Racional de Medicamentos (PNAUM - National Survey on Access, Use and Promotion of Rational Use of Medicines), a cross-sectional, exploratory, and evaluative study composed by an information survey in a representative sample of cities, stratified by Brazilian regions. We interviewed municipal secretaries of health, responsible for pharmaceutical services, and pharmacists responsible for the dispensing of medicines. The variables selected from the interviews were grouped into five dimensions that defined three stages of pharmaceutical services institutionalization: incipient (0%-34.0%), partial (35.0%-69.0%), and advanced (70.0%-100%), estimated based on the interviewees' answers. Frequencies were estimated with 95% confidence intervals. For the statistical association analysis, the Chi-square test was applied, with significance level of p<0.05., Results: Our results show a partial and heterogeneous process of institutionalization of pharmaceutical services in Brazil, and an advanced stage in formal structures, such as the municipal health plans and the existence of a standardized list of medicines. The analysed variables in the "organization, structure, and financing" dimension configured stages that range from partial to advanced. The management presented partial institutionalization, positively showing the existence of computerized system, but also disparate results regarding the autonomy in the management of financial resources. Indispensable items related to the structure expressed disparities between the regions, with statistically significant differences., Conclusion: The study showed a partial and heterogeneous process of institutionalization of pharmaceutical services in Brazilian cities, showing regional disparities. Variables related to the normative aspects of institutionalization were positively highlighted in all dimensions; however, it is necessary to conduct new studies to evaluate the institutionalization of pharmaceutical services' finalistic activities.
- Published
- 2017
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46. Technical issues and conservation conditions of medicines in the primary health care of the Brazilian Unified Health System.
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Costa EA, Araújo PS, Pereira MT, Souto AC, Souza GS, Guerra AA Junior, Acurcio FA, Guibu IA, Alvares J, Costa KS, Karnikowski MGO, Soeiro OM, and Leite SN
- Subjects
- Brazil, Cross-Sectional Studies, Drug Storage legislation & jurisprudence, National Health Programs, Drug Storage standards, Pharmaceutical Services standards, Primary Health Care
- Abstract
Objective: To characterize the technical issues and conditions of medicines conservation in Primary Health Care of Brazilian regions, responsible for pharmacy/dispensing unit profile; environmental, storage, and dose fractioning conditions; inventory control and waste management; fire and electrical failure safety items; transportation problems; advertising regulation; and pharmacovigilance., Methods: This article is part of the Pesquisa Nacional sobre Acesso, Utilização e Promoção do Uso Racional de Medicamentos - Serviços (National Survey on Access, Use and Promotion of Rational Use of Medicines - Services)-, a cross-sectional and exploratory study, of evaluative nature, consisting of an information survey within a representative sample of municipalities, stratified by Brazilian regions, which constitute the study domains, and a sample of Primary Health Care services. Pharmaceutical services (PS) were directly observed with photographic record and face-to-face interviews with those responsible for the dispensing of medicines and over the telephone with those responsible for pharmaceutical services. Data were processed with the SPSS® software version 21., Results: The investigated dimensions showed relevant deficiencies and inequalities between the regions, generally more favorable in the Southeast and Midwest regions and weaker in the Northeast and North regions. We verified non-compliance with technical requirements and conditions essential to the conservation of medicines, which may interfere with the maintenance of stability and, thus, on their quality, efficacy, and safety. The regulation of advertising/promotion of medicines is still incipient and there is some progress in the structuring of mechanisms regarding pharmacovigilance., Conclusions: The sanitary situation of medicines in Brazilian Primary Health Care is alarming due to the violation of the specific sanitary legislation for dispensing establishments and due to a wide range of requirements essential to the conservation of medicines. We observed a disconnection between the efforts made in the Brazilian Unified Health System to promote access to medicines for all population and the organization and qualification of pharmaceutical services.
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- 2017
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47. A Highly Effective Strategy for Encapsulating Potassium Cations in Small Crown Ether Rings on a Dinuclear Palladium Complex.
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Lucio-Martínez F, Bermúdez B, Ortigueira JM, Adams H, Fernández A, Pereira MT, and Vila JM
- Abstract
The potential of 15-crown-5 ethers to link large cations, such as potassium, is limited by the quasi-parallel arrangement of two oxygen donor moieties upon appropriate orientation of the corresponding ether-ring-containing molecules. Substrates bearing the two crown ethers that are capable of achieving such coordination are hitherto unknown. The synthesis and isolation of a tailor-made dinuclear palladacycle bearing 15-crown-5 ether rings on the metallated phenyls offers such a possibility, providing the adequate environment for the formation of the sandwiched [K(metallacycle-15-crown-5)
2 ] moiety. This synthetic strategy also culminates in the isolation of the first palladacycle able to entrap a potassium cation through bonding to two 15-crown-5 ether rings in a single molecule., (© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)- Published
- 2017
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48. Development of a new model of actinic enteritis in rats using a cobalt-60 open source and a protection device as a collimator.
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Nunes VRT, Vidigal PVT, Pereira MT, Ladeira LCD, Barbuto RC, and Duval-Araujo I
- Subjects
- Animals, Colon pathology, Disease Models, Animal, Female, Rats, Rats, Wistar, Cobalt Radioisotopes, Colon radiation effects, Dose-Response Relationship, Radiation, Radiation Injuries, Experimental pathology
- Abstract
Purpose:: To describe a new model of actinic enteritis that does not use radiotherapy machines., Methods:: Sixteen Wistar rats were divided into four groups, consisting of four animals each: control (group A), two weeks after irradiation (group B), five weeks after irradiation (group C) and eight weeks after irradiation (group D). Animals were given a 10Gy radiation from a Cobalt-60 natural source in a nuclear technology research center. Protections of the surrounding tissues were obtained through the usage of plumb devices with a hole in the center, which served as a collimator. We obtained irradiated and non-irradiated colons from each animal., Results:: In group B we found an important inflammatory response in the irradiated colon, which appeared in a reduced way in group C and was minimal in group D, in which we found a relevant collagen submucosal deposition/fibrosis. In all groups, the non-irradiated colon had a lower pathological damage in comparison with the irradiated colon., Conclusion:: We thus described an efficient and feasible technique for obtaining an animal model of actinic enteritis.
- Published
- 2017
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49. Palladacycle catalysis: an innovation to the Suzuki-Miyaura cross-coupling reaction.
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Lucio-Martínez F, Adrio LA, Polo-Ces P, Ortigueira JM, Fernández JJ, Adams H, Pereira MT, and Vila JM
- Abstract
Herein we report a Suzuki-Miyaura type cross-coupling between an aryl halide and a functionalized boronic acid palladacycle in the absence of an external catalyst. This reaction is an unprecedented case of catalysis in palladium metallacycle chemistry.
- Published
- 2016
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50. The Impact of Venous Leg Ulcers on Body Image and Self-esteem.
- Author
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Salomé GM, de Almeida SA, de Jesus Pereira MT, Massahud MR Jr, de Oliveira Moreira CN, de Brito MJ, and Ferreira LM
- Subjects
- Adult, Age Factors, Aged, Ambulatory Care, Brazil, Chi-Square Distribution, Chronic Disease, Cohort Studies, Female, Hospitals, University, Humans, Leg Ulcer diagnosis, Leg Ulcer psychology, Leg Ulcer therapy, Male, Middle Aged, Prospective Studies, Risk Assessment, Severity of Illness Index, Sex Factors, Socioeconomic Factors, Surveys and Questionnaires, Varicose Ulcer therapy, Body Image psychology, Self Concept, Varicose Ulcer diagnosis, Varicose Ulcer psychology
- Abstract
Objective: To evaluate self-esteem and body image in patients with venous leg ulcers (VLUs)., Design: A multicenter, prospective, descriptive, analytical, clinical study., Settings: A nursing care and education center of a university hospital, a health center, and an outpatient wound care clinic in Brazil., Patients: Fifty-nine consecutive adult patients with VLUs and Doppler ankle-brachial index ranging from 0.8 to 1.0 were recruited for the study. Exclusion criteria were mixed ulcers, arterial ulcers, and diabetic foot ulcers., Main Outcome Measures: A questionnaire assessing sociodemographic and clinical characteristics of patients, the Brazilian version of the Body Investment Scale, and the Rosenberg Self-esteem (RSE)/UNIFESP-EPM (São Paulo da Universidade Federal de São Paulo-Escola Paulista de Medicina) scale were administered to all patients., Main Results: Most participants were women, aged between 60 and 70 years, and smokers; 33 (56%) were divorced, widowed, or single, and 26 (44%) were married. The patients had the ulcer for a mean of 5.42 years. Exudate and foul odor were present in most cases. Twenty-one ulcers (36%) measured 29 cm or less in surface area, and 17 (29%) ulcers measured between 30 and 49 cm (mean, 3.39 cm). The mean RSE score was 22.66, indicating low self-esteem. The mean Body Investment Scale total score was 27.49, and the scores on the body image and body touch subscales were also low, indicating negative feelings about the body., Conclusion: Patients with VLUs had low self-esteem and negative feelings about their bodies.
- Published
- 2016
- Full Text
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