Quantitative study of myocardial microcirculation in arterial hypertension due to progressive inhibition of NO synthesis

OBJECTIVE: To study the quantitative changes in intramyocardial blood vessels in rats in whom nitric oxide synthesis was inhibited. METHODS: Four groups of 10 rats were studied: control (C25 and C40) and L-NAME (L25 and L40). The animals L25 and L40 received L-NAME in the dosage of 50mg/kg/day for 25 and 40 days, respectively. On days 26 and 41 the animals in groups 25 and 40 were sacrificed. Analysis of the myocardium was performed using light microscopy and stereology. RESULTS: Arterial blood pressure and heart weight increased 74.5 and 57.8% after 25 days and 90.2 and 34.6% after 40 days, respectively. Comparing the L-NAME rats with the respective controls revealed that vessel volume density decreased 31.3% after 40 days, and the vessel length-density decreased 53.5% after 25 days and 25.7% after 40 days. The mean cross-sectional area of the vessels showed an important reduction of 154.6% after 25 days. The intramyocardial vessels decreased significantly in length- density in the L-NAME animals. The mean cross-sectional area of the vessels, which normally increases during heart growth between 25 and 40 days, showed a precocious increase by the 25th day in the L-NAME rats. This suggests an increase of the size of the heart, including blood vessels. CONCLUSION: The inhibition of the NO synthesis provokes rarefaction in the intramyocardial vessels that progresses with the time of administration of L-NAME.

A quantitative research about attitudes of pre-service teachers on inclusive education

In this paper we propose to characterize the inclusive philosophy in Thailand as well as to present and discuss results from a quantitative research carried out within the teacher pre-service context, viewed as one of the components that should be addressed by school systems that seek to be inclusive.

Influence of balloon pressure inflation in patients undergoing primary coronary stent implantation during acute myocardial infarction: a quantitative coronary angiography analysis

OBJECTIVE:To verify the influence of moderate- or high-pressure balloon inflation during primary coronary stent implantation for acute myocardial infarction. METHODS: After successful coronary stent implantation, 82 patients were divided into 2 groups according to the last balloon inflation pressure: group 1 (<FONT FACE=Symbol>&sup3;</FONT>12 to <16 atm) and group 2 (<FONT FACE=Symbol>&sup3;</FONT>16 to 20 atm), each with 41 cases. All patients underwent late coronary angiography. RESULTS: In group 1, the mean stent deployment pressure was 13.58±0.92 atm, and in the group 2 it was 18.15±1.66 atm. Stents implanted with moderate pressures (<FONT FACE=Symbol>&sup3;</FONT>12 to <16 atm) had a significantly smaller postprocedural minimal lumen diameter, compared to with those with higher pressure, with lesser acute gain (2.7± 0.4 mm vs 2.9±04 mm; p=0.004), but the late lumen loss (0,9±0,8 mm vs 0,9±0,6 mm) and the restenosis (22% vs. 17.1%) and target-vessel revascularization rates (9.8% vs 7.3%) were similar between the groups. CONCLUSION: During AMI stenting, the use of high pressures (<FONT FACE=Symbol>&sup3;</FONT>16 atm) did not cause a measurable improvement in late outcome, either in the late loss, its index, and the net gain, or in clinical and angiographic restenosis rates.

Diferenças relacionadas ao sexo nos volumes ventriculares e na fração de ejeção do ventrículo esquerdo estimados por cintilografia de perfusão miocárdica: comparação entre os programas Quantitative Gated SPECT (QGS) e Segami

OBJETIVO: Analisar as diferenças relacionadas ao sexo nas medidas obtidas pelos programas Segami e Quantitative Gated SPECT (QGS). MÉTODOS: Cento e oitenta e um indivíduos assintomáticos sem evidência de cardiopatia foram submetidos a estudos de perfusão miocárdica. O volume diastólico final (VDF), volume sistólico final (VSF) e a fração de ejeção do ventrículo esquerdo (FEVE) foram quantificados pelos programas QGS and Segami para avaliar a influência do sexo, idade, peso, altura, freqüência cardíaca, pressão arterial sistólica, pressão arterial diastólica, índice de massa corporal e área de superfície corporal. RESULTADOS: As médias obtidas com o método QGS foram VDF (mulheres = 68 ml; homens = 95 ml; p < 0,001) e FEVE (mulheres = 66,24%; homens = 58,7%), e com o Segami, VDF (mulheres = 137 ml; homens = 174 ml) e FEVE (mulheres = 62,67%; homens = 58,52%). Foram observadas diferenças significantes entre homens e mulheres no VDF (p < 0,001) e VSF (p < 0,001), que persistiram após o ajuste em relação à área de superfície corporal. CONCLUSÃO: Os volumes ventriculares foram significantemente menores e a FEVE foi significantemente maior em mulheres, de acordo com os programas QGS e Segami.

Traité d'embryologie et d'organogénie comparées / par Francis M. Balfour ; traduit avec l'autorisation de l'auteur et annoté par H.A. Robin.

1

Traité d'embryologie et d'organogénie comparées / par Francis M. Balfour ; traduit avec l'autorisation de l'auteur et annoté par H.A. Robin.

2

Traité de microbiologie, par E. Duclaux.

4

Traité de microbiologie, par E. Duclaux.

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Traité de microbiologie, par E. Duclaux.

2

Encyclopédie d'histoire naturelle; ou, traité complet de cette science d'après les travaux des naturalistes les plus éminents de tous les pays et de toutes les époques: Buffon, Daubenton, Lacépède, G. Cuvier, F. Cuvier, Geoffroy Saint-Hilaire, Latreille, De Jussieu, Brongniart, etc.

Oiseaux No.1

Encyclopédie d'histoire naturelle; ou, traité complet de cette science d'après les travaux des naturalistes les plus éminents de tous les pays et de toutes les époques: Buffon, Daubenton, Lacépède, G. Cuvier, F. Cuvier, Geoffroy Saint-Hilaire, Latreille, De Jussieu, Brongniart, etc.

Rongeurs et Pachydermes

Qualitative and quantitative formal model-based safety analysis : push the safety button

Magdeburg, Univ., Fak. für Informatik, Diss., 2011

Encyclopédie d'histoire naturelle; ou, traité complet de cette science d'après les travaux des naturalistes les plus éminents de tous les pays et de toutes les époques: Buffon, Daubenton, Lacépède, G. Cuvier, F. Cuvier, Geoffroy Saint-Hilaire, Latreille, De Jussieu, Brongniart, etc.

Carnassiers No.1 & 2