Effects of Different Doses of Caffeinated Coffee on Muscular Endurance, Cognitive Performance, and Cardiac Autonomic Modulation in Caffeine Naive Female Athletes.

Caffeine is widely consumed among elite athletes for its well-known ergogenic properties, and its ability to increase exercise performance. However, studies to date have predominantly focused on the anhydrous form of caffeine in male participants. The aim of the study was to investigate the effect of caffeinated coffee ingestion on lower-upper body muscular endurance, cognitive performance, and heart rate variability (HRV) in female athletes. A total of 17 participants (mean ± standard deviation (SD): age = 23 ± 2 years, body mass = 64 ± 4 kg, height = 168 ± 3 cm) in a randomized cross-over design completed three testing sessions, following the ingestion of 3 mg/kg/bm of caffeine (3COF), 6 mg/kg/bm of caffeine (6COF) provided from coffee or decaffeinated coffee (PLA) in 600 mL of hot water. The testing results included: (1) repetition number for muscular endurance performance; (2): reaction time and response accuracy for cognitive performance; (3): HRV parameters, such as standard deviation of normal-to-normal (NN) intervals (SDNN), standard deviation of successive differences (SDSD), root mean square of successive differences (RMSSD), total power (TP), the ratio of low- and high-frequency powers (LF/HF), high-frequency power (HF), normalized HF (HFnu), low-frequency power (LF), and normalized LF (LFnu). A one-way repeated measures ANOVA revealed that 3COF (p = 0.024) and 6COF (p = 0.036) improved lower body muscular endurance in the first set as well as cognitive performance (p = 0.025, p = 0.035 in the post-test, respectively) compared to PLA. However, no differences were detected between trials for upper body muscular endurance (p = 0.07). Lastly, all HRV parameters did not change between trials (p > 0.05). In conclusion, ingesting caffeinated coffee improved lower body muscular endurance and cognitive performance, while not adversely affecting cardiac autonomic function.

Impacto da criação do curso de medicina da Universidade Federal de Viçosa no perfil dos profissionais médicos do município / Impact of the creation of the medical course of the Federal University of Viçosa on the profile of the medical professionals of the municipality

Introdução: A distribuição da força de trabalho médica é alvo de diversos estudos em todo o mundo e a desigualdade entre as capitais e cidades do interior está presente na maioria deles, o que não é diferente no Brasil. A criação do curso de medicina da UFV, em 2010, é uma iniciativa em que um dos objetivos foi atrair profissionais da área para a cidade de Viçosa, bem como proporcionar melhores oportunidades de vida e trabalho como médico. Objetivo: Identificar o impacto causado pela criação do curso de medicina da Universidade Federal de Viçosa nos serviços de saúde, perfil e migração dos médicos da cidade, além de definir quais são os principais fatores influenciadores para escolha de uma cidade para se viver e trabalhar como médico. Metodologia: Aplicação de questionário próprio, contendo 20 perguntas, aos médicos domiciliados na cidade antes e depois da criação do curso, além dos estudantes do quinto e sexto ano do curso. Resultados: A aceitação do cônjuge/companheiro foi relevante para o grupo de médicos mais antigos, enquanto a oportunidade de pós-graduação stricto sensu foi relevante para os médicos mais novos (p<0,05). Na percepção do primeiro grupo, houve melhora dos serviços de saúde públicos, privados e das perspectivas de carreira. A qualidade de vida foi o mais importante aspecto para a migração dos médicos mais novos. A maioria dos estudantes tem intenção em trabalhar em cidades do interior e se sente preparado para isso. Conclusão: Houve impacto positivo nos serviços de saúde e atração de profissionais pela oportunidade de pós-graduação stricto sensu que pode ser atribuído à criação do curso de medicina da UFV. A qualidade de vida também foi importante para atração, o que é visto como fator importante para todos os participantes.(AU)

Introduction: The distribution of the medical workforce is target of several studies around the world and the inequality among the capitals and inner cities is present in most of them, which is not different in Brazil. The creation of the UFV medicine course in 2010 is an initiative that had as one of its objectives to attract professionals from the area to the city of Viçosa, as well as to provide better life and work opportunities as a doctor. Objective: To identify the impact caused by the creation of the medicine course at the Federal University of Viçosa in the health services, profile and migration of physicians in the city, and define the main influencing factors for choosing a city to live and work as doctor. Methodology: Application of a questionnaire, containing 20 questions, to physicians domiciled in the city before and after the creation of the course, in addition to the students of the fifth and sixth year of the course. Results: The acceptance of the spouse / partner was relevant for the group of older physicians, while the opportunity of stricto sensu graduate was relevant for younger physicians (p <0.05). In the perception of the first group, there was improvement in the public and private health services, as well as in the career prospects. Quality of life was the most important aspect for the migration of younger physicians. Most students intend to work in inner cities and feel prepared for it. Conclusion: There was a positive impact on health services and attraction of professionals for the stricto sensu post-graduation opportunity, what can be attributed to the creation of the UFV medicine course. Quality of life was also important for attracting people, which is seen as an important factor for all participants.(AU)

Actividad inhibitoria in vitro de extractos etanólicos de plantas del género Annona y Piper sobre promastigotes de Leishmania braziliensis / In vitro inhibitory activity of ethanolic extracts from Annona and Piper species on Leishmania braziliensis promastigotes

Objetivo. Evaluar el efecto de extractos etanólicos de cinco especies del género Annona y cinco especies del género Piper frente a la línea clonal de referencia de promastigotes de Leishmania braziliensis. Materiales y métodos. Se evaluó el efecto de los extractos etanolicos de Annona hypoglauca, Annona montana, mucosa, Annona nítida, Annona squamosa, Piper acutifolium¸ Piper aduncum, Piper callosum, Piper carpunya y Piper peltatum; sobre cepas de promastigotes de Leishmania braziliensis MHON/ BR/79/M2904. El efecto leishmanicida in vitro se evaluó mediante el cálculo del IC50 por el método probit. Resultados. Las especies con mayor actividad fueron P. acutifolium (IC50=19,40 µg/mL) P. peltatum (IC50=26,6 µg/mL), P. callosum (IC50=21,7 µg/mL), A. mucosa (IC50=30,5 µg/mL) y A. montana (IC50=16,4 µg/mL). Conclusión. Los extractos etanólicos de P. acutifolium, P. peltatum, P. callosum, A. mucosa y A. montana, han mostrado una actividad leishmanicida in vitro. Sin embargo, estos efectos no son superiores a los exhibidos por Anfotericina B.

Objective. To evaluate the effect of ethanolic extracts of five species of genus Annona and five species of genus Piper against a clonal line of reference of Leishmania braziliensis promastigotes. Materials and methods. The ethanolic extracts of Annona hypoglauca, Annona montana, mucosa, Annona nítida, Annona squamosa, Piper acutifolium¸ Piper aduncum, Piper callosum, Piper carpunya and Piper peltatum were evaluated against strains of Leishmania braziliensis promastigotes (MHON/BR/79/ M2904). The in vitro leishmanicidal effect was evaluated through the IC50, which was calculated by the probit method. Results. The species with the highest activity were P. acutifolium (IC50=19,40 µg/ mL) P. peltatum (IC50=26,6 µg/mL), P. callosum (IC50=21,7 µg/mL), A. mucosa (IC50=30,5 µg/mL) and A. montana (IC50=16,4 µg/mL). Conclusion. The ethanolic extracts of P. acutifolium, P. peltatum, P. callosum, A. mucosa and A. montana, had shown some in vitro leishmanicidal activity. However, these effects are not superior to those exhibited by Amphotericin B.

Effect of Syzygium cumini leaves on laying hens performance and egg quality.

The aim of this study was to evaluate the effect of Syzygium cumini leaves (SCL) in laying hens diets on productive performance, egg quality and lipid oxidation of yolk. A total of 108 Hysex White laying hens were distributed in a completely randomized design with three treatments and six replicates of six birds each. The treatments consisted of SCL inclusion at dietary levels of 0, 5 and 10 g/kg. There was no significant effect of SCL inclusion on feed intake, laying percentage, weight and egg mass, feed conversion ratio, Haugh units, specific gravity, percentage of yolk, albumen and egg shells and shell thickness. However, the inclusion of SCL significantly influenced the yolk color and yolk lipid oxidation measured by TBARS values. Yolk color increased and TBARS values ​​decreased with the inclusion of SCL. The inclusion of SCL in laying hens diets improves pigmentation and lipid stability of yolk.

Effect of Syzygium cumini leaves on laying hens performance and egg quality

ABSTRACT The aim of this study was to evaluate the effect of Syzygium cumini leaves (SCL) in laying hens diets on productive performance, egg quality and lipid oxidation of yolk. A total of 108 Hysex White laying hens were distributed in a completely randomized design with three treatments and six replicates of six birds each. The treatments consisted of SCL inclusion at dietary levels of 0, 5 and 10 g/kg. There was no significant effect of SCL inclusion on feed intake, laying percentage, weight and egg mass, feed conversion ratio, Haugh units, specific gravity, percentage of yolk, albumen and egg shells and shell thickness. However, the inclusion of SCL significantly influenced the yolk color and yolk lipid oxidation measured by TBARS values. Yolk color increased and TBARS values ​​decreased with the inclusion of SCL. The inclusion of SCL in laying hens diets improves pigmentation and lipid stability of yolk.

Effect of different airborne-particle abrasion/bonding agent combinations on the bond strength of a resin cement to a base metal alloy.

STATEMENT OF PROBLEM: Investigation of surface treatments to improve the bond of resin cements to metals may contribute to the longevity of metal ceramic restorations. PURPOSE: The purpose of this study was to evaluate the efficacy of surface treatments on the shear bond strength (SBS) of a resin cement to nickel-chromium (NiCr) alloy. MATERIAL AND METHODS: Eighty cast NiCr alloy disks (9 × 3 mm) were divided into 8 groups (n=10), which received 1 of the following surface treatments: 1) 50 µm Al(2)O(3) particles + silane; 2) 120 µm Al(2)O(3) + silane; 3) 30 µm silica-modified Al(2)O(3) (Cojet Sand) + silane; 4) 120 µm Al(2)O(3) followed by 110 µm silica-modified Al(2)O(3) (Rocatec) + silane; 5) 50 µm Al(2)O(3) + metal primer; 6) 120 µm Al(2)O(3) + metal primer; 7) 30 µm silica-modified Al(2)O(3) (Cojet Sand) + metal primer; and 8) 120 µm Al(2)O(3) followed by 110 µm silica-modified Al(2)O(3) (Rocatec) + metal primer. The silane was RelyX Ceramic Primer and the metal primer Alloy Primer. RelyX ARC resin cement was bonded to NiCr alloy surfaces. Specimens were thermally cycled before shear mode testing. Data (MPa) were analyzed by 1-way ANOVA and the Tukey test (α=.05). Failure mode was determined with a stereomicroscope (×20). RESULTS: The results revealed that surface treatment was significant (P<.001). There was no significant difference between 50 µm and 120 µm Al(2)O(3) particles, regardless of the bonding agent used (silane or metal primer). Cojet Sand provided lower SBS than Rocatec, both in the groups treated with silane (P<.001) and metal primer (P<.01). No significant difference was observed between silane and metal primer in the groups abraded with 50 µm and 120 µm Al(2)O(3) particles. Metal primer decreased the SBS of both Cojet Sand and Rocatec groups (P<.001). Rocatec + silane had the highest SBS and Cojet Sand + metal primer the lowest. All groups presented 100% adhesive failure. CONCLUSIONS: Particle size influenced SBS only in the groups abraded with silica-modified Al(2)O(3). The bonding agent did not affect SBS in the groups abraded with Al(2)O(3). Alloy Primer was not chemically compatible with silica-modified Al(2)O(3). Both mechanical (particle size) and chemical (silica/silane interaction) factors contributed to the high SBS of Rocatec + silane.

Effects of albumin administration in serum liver enzymes of rats in the presence of extrahepatic biliary obstruction.

PURPOSE: To study the influence of albumin on changes of liver function in the extrahepatic biliary obstruction through an experimental model in rats. METHODS: Sixty rats were divided into four groups: Group C (Control): 6 animals. Group M (Fictitious Operation): 18 rats underwent laparotomy and handling of the bile ducts; Groups O (extrahepatic biliary obstruction) and A (Treated with 2% albumin): 18 animals in each group underwent ligation of the ductus liver; The animals in groups M, O and A were divided into three subgroups of 6 animals each to be killed in the 7, 14 and 21 days postoperative (POD). Blood was drawn for determination of total bilirubin (TB), indirect bilirubin (IB), direct bilirubin (DB), alkaline phosphatase (ALP), aspartate aminotransferase (AST) and alanine aminotransferase (ALT). RESULTS: On POD 7, BI levels were 4.5 mg / dl in group O and 2.1 mg / dl in group A (p = 0.025). On the 14th POD, the levels of PA were 1185.2 U / l in the group and O 458.3 U / l in group A (p = 0.004). ALT levels were 101.7 U / l in the group O and 75.7 U / l in group A (= 0.037). On POD 21, the levels of ALP were 1069.5 U / l in the group O and 468.3 U / l in group A (p = 0, 004). CONCLUSION: The administration of albumin reduced the serum levels of bilirubin in the 7th day of supplementation.

Safety and feasibility of percutaneous retrograde coronary sinus delivery of autologous bone marrow mononuclear cell transplantation in patients with chronic refractory angina.

BACKGROUND: Chronic refractory angina is a challenging clinical problem with limited treatment options. The results of early cardiovascular stem cell trials using ABMMC have been promising but have utilized intracoronary or intramyocardial delivery. The goal of the study was to evaluate the safety and early efficacy of autologous bone marrow derived mononuclear cells (ABMMC) delivered via percutaneous retrograde coronary sinus perfusion (PRCSP) to treat chronic refractory angina (CRA). METHODS: From May 2005 to October 2006, 14 patients, age 68 +/- 20 years old, with CRA and ischemic stress-induced myocardial segments assessed by SPECT received a median 8.19*10(8) ± 4.3*10(8) mononuclear and 1.65*10(7) ± 1.42*10(7) CD34(+) cells by PRCSP. RESULTS: ABMMC delivery was successful in all patients with no arrhythmias, elevated cardiac enzymes or complications related to the delivery. All but one patient improved by at least one Canadian Cardiovascular Society class at 2 year follow-up compared to baseline (p < 0.001). The median baseline area of ischemic myocardium by SPECT of 38.2% was reduced to 26.5% at one year and 23.5% at two years (p = 0.001). The median rest left ventricular ejection fraction by SPECT at baseline was 31.2% and improved to 35.5% at 2 year follow up (p = 0.019). CONCLUSIONS: PRCSP should be considered as an alternative method of delivery for cell therapy with the ability to safely deliver large number of cells regardless of coronary anatomy, valvular disease or myocardial dysfunction. The clinical improvement in angina, myocardial perfusion and function in this phase 1 study is encouraging and needs to be confirmed in randomized placebo controlled trials.

Effects of albumin administration in serum liver enzymes of rats in the presence of extrahepatic biliary obstruction / Efeitos da administração de albumina nos níveis séricos de enzimas hepáticas em ratos com obstrução biliar extra-hepática

PURPOSE: To study the influence of albumin on changes of liver function in the extrahepatic biliary obstruction through an experimental model in rats. METHODS: Sixty rats were divided into four groups: Group C (Control): 6 animals. Group M (Fictitious Operation): 18 rats underwent laparotomy and handling of the bile ducts; Groups O (extrahepatic biliary obstruction) and A (Treated with 2 percent albumin): 18 animals in each group underwent ligation of the ductus liver; The animals in groups M, O and A were divided into three subgroups of 6 animals each to be killed in the 7, 14 and 21 days postoperative (POD). Blood was drawn for determination of total bilirubin (TB), indirect bilirubin (IB), direct bilirubin (DB), alkaline phosphatase (ALP), aspartate aminotransferase (AST) and alanine aminotransferase (ALT). RESULTS: On POD 7, BI levels were 4.5 mg / dl in group O and 2.1 mg / dl in group A (p = 0.025). On the 14th POD, the levels of PA were 1185.2 U / l in the group and O 458.3 U / l in group A (p = 0.004). ALT levels were 101.7 U / l in the group O and 75.7 U / l in group A (= 0.037). On POD 21, the levels of ALP were 1069.5 U / l in the group O and 468.3 U / l in group A (p = 0, 004). CONCLUSION: The administration of albumin reduced the serum levels of bilirubin in the 7th day of supplementation.

OBJETIVO: Estudar a influência da albumina em alterações funcionais do fígado na obstrução biliar extra-hepática por meio de um modelo experimental desenvolvido em ratos. MÉTODOS: 60 ratos distribuídos em quatro grupos: Grupo C (Controle): 6 animais. Grupo M (Operação Fictícia): 18 ratos submetidos à laparotomia e manuseio das vias biliares; Grupos O (Obstrução Biliar Extra-hepática) e A (Tratados com albumina a 2 por cento): 18 animais, em cada grupo, submetidos à ligadura do ducto hepático; Os animais dos grupos M, O e A foram distribuídos em três subgrupos de 6 animais cada, para serem mortos nos 7°, 14° e 21° dias pós- operatórios (DPO). Foi colhido sangue para dosagem de bilirrubina total (BT), bilirrubina indireta (BI), bilirrubina direta (BD), fosfatase alcalina (FAL), aspartato aminotransferase (AST) e alanina aminotransferase (ALT). RESULTADOS: no 7º DPO, os níveis de BI foram 4,5 mg/dl no grupo O e 2,1mg/dl no grupo A (p=0,025). No 14º DPO, os níveis de FAL foram 1185,2 U/l no grupo O e 458,3 U/l no grupo A (p=0,004). Os níveis de ALT foram de 101,7 U/l no grupo O e 75,7 U/l no grupo A (=0,037). No 21º DPO, os níveis de FAL foram de 1069,5 U/l no grupo Oe de 468,3 U/l no grupo A (p =0, 004). CONCLUSÃO: a administração de albumina reduziu os níveis séricos de bilirrubina indireta no 7°dia de suplementação.

Influence of glutamine on morphological and functional changes of liver in the presence of extrahepatic biliary obstruction in rats.

PURPOSE: To study the influence of glutamine on functional and morphological changes of liver in the extrahepatic biliary obstruction through an experimental model in rats. METHODS: Seventy Wistar rats were divided into four groups: control (group C) fictitious operation, (group FO), submitted to laparotomy with handling of bile ducts, but without hepatic duct ligation, (group EBO) submitted to laparotomy and hepatic duct ligation, one of them submitted to supplementation with glutamine 2% (group G). The control group consisted of 6 animals. The animals from groups FO, EBO and G were divided into three groups consisting of 6 animals each, being sacrificed at 7, 14 and 21 days after operation, respectively. Blood samples were collected for biochemical analysis and a fragment of liver tissue was collected from the middle lobe for histological analysis. RESULTS: Both for biochemical analysis (BT, aspartate and alanine aminotransferase AST, ALT and alkaline phosphatase FAL) and for histopathological changes (fibrosis, portal inflammation, parenchymal inflammation, hepatocytic changes and duct proliferation), no statistical difference between groups submitted to extrahepatic biliary obstruction (EBO) with and without treatment with glutamine (G) was observed. CONCLUSION: Glutamine supplementation did not alter the prognosis of liver enzymes and histopathological changes in animals submitted to extrahepatic biliary obstruction.

Influence of glutamine on morphological and functional changes of liver in the presence of extrahepatic biliary obstruction in rats / Influência da glutamina em alterações funcionais e morfológicas do fígado na vigência de obstrução biliar extra-hepática em ratos

PURPOSE: To study the influence of glutamine on functional and morphological changes of liver in the extrahepatic biliary obstruction through an experimental model in rats. METHODS: Seventy Wistar rats were divided into four groups: control (group C) fictitious operation, (group FO), submitted to laparotomy with handling of bile ducts, but without hepatic duct ligation, (group EBO) submitted to laparotomy and hepatic duct ligation, one of them submitted to supplementation with glutamine 2 percent (group G). The control group consisted of 6 animals. The animals from groups FO, EBO and G were divided into three groups consisting of 6 animals each, being sacrificed at 7, 14 and 21 days after operation, respectively. Blood samples were collected for biochemical analysis and a fragment of liver tissue was collected from the middle lobe for histological analysis. RESULTS: Both for biochemical analysis (BT, aspartate and alanine aminotransferase AST, ALT and alkaline phosphatase FAL) and for histopathological changes (fibrosis, portal inflammation, parenchymal inflammation, hepatocytic changes and duct proliferation), no statistical difference between groups submitted to extrahepatic biliary obstruction (EBO) with and without treatment with glutamine (G) was observed. CONCLUSION: Glutamine supplementation did not alter the prognosis of liver enzymes and histopathological changes in animals submitted to extrahepatic biliary obstruction.

OBJETIVO: Estudar a influência da glutamina em alterações funcionais e morfológicas do fígado na obstrução biliar extra-hepática por meio de um modelo experimental desenvolvido em ratos. MÉTODOS: Setenta ratos Wistar distribuídos em quatro grupos: controle (grupo C); operação fictícia (grupo OF), submetido à laparotomia com manuseio das vias biliares, mas sem ligadura do ducto hepático; (grupo OBE), submetido à laparotomia exploradora e ligadura do ducto hepático, sendo um deles submetido à suplementação com glutamina a 2 por cento (grupo G). O grupo controle era composto por seis animais. Os animais dos grupos OF, OBE e G foram divididos em três grupos compostos por seis animais cada e que foram sacrificados no 7°, 14° e 21° dias após a operação, respectivamente. Foi colhido sangue para análise bioquímica e um fragmento de tecido hepático do lobo médio para estudo histológico. RESULTADOS: Tanto em relação à analise bioquímica (BT, aspartate and alanine aminotransferase AST, ALT e FAL) quanto em relação às alterações histopatológicas (fibrose, inflamação portal, inflamação parenquimatosa, alterações hepatocíticas e proliferação de ducto), não houve diferença estatística entre os grupos submetido a obstrução biliar extra-hepática sem (OBE) e com tratamento com glutamina (G). CONCLUSÃO: A suplementação com glutamina não alterou o prognóstico em relação às enzimas hepáticas e alterações histopatológicas nos animais submetidos à obstrução biliar extra-hepática.

Efectividad de la radiacion laser de baja potencia y fluoruro de sodio al 2 por ciento en el tratamiento de la hiperestesia dentinaria

Se realiz¢ un estudio longitudinal y prospectivo en una muestra de 60 pacientes que presentaron 136 dientes con diagn¢stico cl¡nico de hiperestesia dentinaria, los cuales asistieron al departamento de atenci¢n primaria de la cl¡nica provincial docente Antonio Briones Montoto de la ciudad de Pinar del R¡o desde abril a noviembre de 2001. Para mejor estudio se conformaron dos grupos de 30 pacientes cada uno. Un primer grupo estudio constituido por 72 dientes al que se le aplic¢ tratamiento con fl£or al 2por ciento y radiaci¢n l ser, y un segundo grupo control con 64 dientes afectados que fueron tratados con tratamiento convencional. Se concluye que ambos grupos evolucionaron positivamente pero con mejores resultados el grupo estudio, obteniendo significaci¢n estad¡stica para este grupo(AU)

Cigarette smoke increases intimal hyperplasia and homocysteine in a rat carotid endarterectomy.

BACKGROUND: Homocysteine and smoking are independent risks for CVD; however their importance in post-CEA intimal hyperplasia is unclear. We performed a CEA in rats exposed to cigarette smoke with the hypothesis that smoking would increase intimal hyperplasia that may be associated with an elevated serum homocysteine. Folic acid (FA) and the homocysteine metabolic enzymes MTHFR and CBS were used to test for the significance of homocysteine elevation. MATERIALS AND METHODS: Rats underwent an open CEA. N = 13 rats received smoke exposure 2 weeks prior, and 2 weeks post-CEA and N = 12 received no smoke. Each group was divided into either control or an FA-added diet resulting in four groups. Rats were sacrificed at 2 weeks post-CEA; liver, urine, blood, and carotid arteries samples were obtained. RESULTS: Smoked rats had increased urinary peak and trough cotinine levels versus non-smoke rats, which decreased with FA. Smoke exposure increased intimal hyperplasia versus non-smoke controls by nearly 120% (57.8 +/- 6.2 versus 26.8 +/- 5.4% luminal stenosis, P = 0.005). Smoke-exposed rats had an increased serum homocysteine versus non-smoke controls (8.3 +/- 0.8 versus 5.7 +/- 0.8 microm, P = 0.014). Smoked rats given FA had decreased serum homocysteine compared to the smoke group. Along with reductions in homocysteine, FA eliminated the increase in intimal hyperplasia seen with smoke exposure (33.5 +/- 6.1 versus 57.8 +/- 6.2% luminal stenosis, P = 0.03). CBS activity decreased in smoked rats by nearly 20% versus non-smoke rats. FA supplementation in smoked rats both (1) increased CBS activity and (2) decreased MTHFR compared to control non-smoke-exposure levels. CONCLUSION: Smoking increases plasma homocysteine and post-CEA intimal hyperplasia. This suggests homocysteine has an etiological role in the intimal hyperplasia increase observed with smoking, since both were negated with FA.

Implementación de la Estrategia de Gestión del uso apropiado de los medicamentos en los SILAIS de Matagalpa y Jinotega, 2001 y 2002 / Implementation of the strategy of management of the appropriate use of medicines in the SILAIS of Matagalpa and Jinotega, 2001 and 2002

Pretende que se mejore la calidad de atención médica a usuarios en la prescripción médica.

Intimal hyperplasia following carotid endarterectomy in an insulin-resistant rat model.

Hyperhomocysteinemia, a known risk factor for cardiovascular disease, results in an elevation of intimal hyperplasia (IH) following a carotid endarterectomy (CEA) in a rat model. An exaggerated IH response following CEA has been observed in rats with dietary induced hyperhomocysteinemia. Type 2 diabetics often present with hyperhomocysteinemia and are at higher risk for developing vascular blockage following surgical procedures. To determine if insulin resistance increases IH risks following endarterectomy, the 3 goals of this study were: (1) to establish plasma homocysteine concentrations in dietary induced insulin-resistant rats and their controls, (2) to investigate whether a positive correlation of IH and plasma homocysteine response occurs following CEA in the insulin-resistant rat model, and (3) if so, to attempt to decrease IH by supplementation with folic acid, a known enzymatic cofactor in the homocysteine metabolic pathway. To achieve these aims, male rats (275 to 300 g) were fed 1 of 4 diets for a 4-month period: (1) high-fat sucrose (HFS), (2) low-fat complex carbohydrate (LFCC), (3) HFS + 25 mg/kg folic acid (HFS+F), or (4) LFCC + 25 mg/kg folic acid (LFCC+F). At the end of the 4-month period the rats underwent an open (non-balloon) unilateral CEA. Two weeks post-endarterectomy, blood, liver and carotid tissue were removed to measure plasma insulin, folic acid, and homocysteine, 2 key enzymes of homocysteine metabolism-methylenetetrahydrofolate reductase (MTHFR) and cystathionine beta-synthase (CBS)-and percent lumenal stenosis (IH%). Computer-assisted morphometric analysis was used to measure the percentage of IH in the carotid artery. Plasma homocysteine was significantly higher in the HFS group when compared with the LFCC group (11.3+/-1.3 micromol/L v 7.4+/-0.6 mircomol/L, P=.008) as was post-endarterectomy IH producing lumenal stenosis (30.7%+/-4.2% v 14.0%+/-4.3%, P=.008). Plasma insulin in the HFS group was higher than the LFCC (control) group and was significant (36.3+/-3.0 microU/mL v 21.1+/-0.8 microU/mL, P=.0004). Folic acid supplementation in the HFS group resulted in reductions of plasma homocysteine (HFS v HFS+F, 11.3+/-1.3 micromol/L v 7.95+/-1.0 micromol/L, P=.02) and post-endarterectomy IH (HFS v HFS+F, 30.7%+/-4.2 % v 10.4%+/-1.6%, P=.0001). The control or LFCC group was not statistically different from the HFS+F group in homocysteine or IH. Folate supplementation did not decrease insulin concentrations in the HFS+F group compared to the LFCC group. We conclude that the HFS diet produced an insulin-resistant state with an elevated plasma homocysteine and an exaggerated IH response following carotid endarterectomy in this rat model. Dietary folate supplementation reduced plasma homocysteine concentrations in the HFS diet, which implicates hyperhomocysteinemia as an etiologic factor in the development of post-CEA IH in this insulin-resistant rat model.

Valoración del lenguaje en preescolares con pero al nacer menor de 1 500 g / Language evaluation in preschool children with antecedent of low birth weight

Introducción. Objetivo: documentar las habilidades lingüísticas de un grupo de preescolares con peso al nacer igual o menor de 1 500 g.Material y métodos. En forma longitudinal, con corte transversal y comparativo, se efectuó evaluación audiológica y lingüística a niños preescolares con peso al nacer igual o menor de 1 500 g, independientemente de su edad gestacional y morbilidad al nacer, con audición normal bilateral, pertenecientes a una clínica de seguimiento pediátrico del recién nacido de alto riesgo. Los cuales se compararon con niños de bajo riesgo. Para la valoración del lenguaje se utilizó la Batería de la Evaluación de la Lengua Española. Considerándose algunas variables biológicas y ambientales para el desarrollo del lenguaje.Resultados. Se evaluaron a 98 niños preescolares con edad media de 4.2 años, distribuidos en dos grupos: grupo A (n=49) formado por niños con peso al nacer igual o menor de 1 500 g, y grupo B (n=49) constituido por niños de bajo riesgo. La edad gestacional promedio al nacer del grupo A fue de 32.5 semanas por Capurro y peso de 1 220 g; 32 niños ameritaron cuidados intensivos neonatales y 22 ventilación mecánica. La morbilidad del grupo A durante el período neonatal la ocupó en primer término la septicemia neonatal (0.67) seguida de la hiperbilirrubinemia (0.55). Se encontró diferencia estadísticamente significativa entre los valores promedio de ambos grupos con P menor de 0.004 en la escala de articulación del lenguaje. Conclusiones. Los niños preescolares con peso al nacer igual o menor de 1 500 g presentan características lingüísticas de menor calidad en comparación con población de bajo riesgo. Lenguaje; valoración; recién nacido de bajo peso.