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排序方式: 共有61条查询结果,搜索用时 15 毫秒
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O. V. Antonova D. A. Gryadunov S. A. Lapa A. V. Kuz’min E. E. Larionova T. G. Smirnova E. Yu. Nosova O. I. Skotnikova L. N. Chernousova A. M. Moroz A. S. Zasedatelev V. M. Mikhailovich 《Bulletin of experimental biology and medicine》2008,145(1):108-113
We developed a method of identification of Mycobacterium tuberculosis with simultaneous evaluation of the sensitivity to fluoroquinolones on a biological microchip array. The method of multiplex
two-staged PCR followed by hybridization of a biochip makes it possible to detect 8 mutant variants of gyrA gene occurring in fluoroquinolone-resistant strains (∼85% all resistant forms) within 1 day. Using this method we analyzed
107 cultures isolated from patients with tuberculosis and 78 sputum samples. Mutations in gyrA gene were detected in 48 (92%) resistant strains. Natural S95T polymorphism in gyrA gene was detected in all resistant and in 76% sensitive strains. The sensitivity and specificity of the proposed method calculated
on the basis of the analysis of sputum samples (n=78) were 94 and 100%, respectively.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 145, No. 1, pp. 115–120, January, 2008 相似文献
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Objective : Inhaled nitric oxide (iNO) has been shown to cause selective pulmonary vasodilatation and improve ventilation-perfusion matching and may be an important therapeutic option for the treatment of persistent pulmonary hypertension of the newborn (PPHN). We report our experience on the use of iNO in neonates with severe PPHN.
Methodology : Inhaled NO was administered to 10 infants with PPHN and persistent hypoxaemia (meconium aspiration syndrome, n = 9; pneumonia, n = 1) after failure of conventional therapy to improve oxygenation. With the exception of one infant, iNO was commenced at 10 ppm.
Results : After 30 min exposure to iNO, the arterial oxygen tension (PaO2 ) rose from a median of 49 mmHg (6.5 kPa) [range 12-82 mmHg (1.6-10.9 kPa)] to 75 mmHg (10 kPa) [range 17-450 mmHg (2.3-60 kPa)] ( P = 0.005), while the median oxygenation index fell (pre-iNO of 37 vs post-iNO 20) ( P = 0.005) and median systemic arterial pressure rose (pre-iNO 46.5 mmHg (6.2 kPa) [range 32-63 mmHg (4.3 to 8.4 kPa vs post-iNO 54.5 mmHg (7.3 kPa) [range 36-74 kPa]) P = 0.005). All infants subsequently continued to receive iNO with the duration of exposure to iNO ranging from 12 to 168 h (median duration 100 h). Three infants died despite showing an initial beneficial response to iNO. The mean duration of intubation for survivors was 11.9 ± 2.6 days. Methaemoglobinaemia and toxic levels of nitrogen dioxide were not seen during iNO administration. Of the seven survivors, 12 month follow up in two infants and 4 month follow up in four infants showed age-appropriate neurodevelopmental skills, with one infant having very mild hearing loss.
Conclusions : Inhaled NO reduces the oxygenation index by improving the PaO2 and decreasing ventilation pressures, and appears to be clinically useful in severely hypoxaemic infants with PPHN refractory to conventional treatment. 相似文献
Methodology : Inhaled NO was administered to 10 infants with PPHN and persistent hypoxaemia (meconium aspiration syndrome, n = 9; pneumonia, n = 1) after failure of conventional therapy to improve oxygenation. With the exception of one infant, iNO was commenced at 10 ppm.
Results : After 30 min exposure to iNO, the arterial oxygen tension (PaO
Conclusions : Inhaled NO reduces the oxygenation index by improving the PaO
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ABSTRACT Inhaled nitric oxide is currently being investigated as a selective pulmonary vasodilator for neonates with persistent pulmonary hypertension. The use of continuous inhaled nitric oxide during emergency transportation of three critically ill neonates with meconium aspiration and pulmonary hypertension is described. The successful application of this technique may allow safer transportation of neonates who require high level intensive care including ongoing nitric oxide, high frequency ventilation and/or extracorporeal life support. Regionally based nitric oxide-equipped retrieval teams may relieve the pressure on smaller neonatal intensive care units to provide inhaled nitric oxide therapy and allow centralization of nitric oxide resources, thus facilitating development of expertise and the completion of meaningful research programs with substantial recruitment. 相似文献
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Skotnikova OI Soboleva AIu Mikhaĭlovich VM Griadunov DA Irtuganova OA Nosova EIu Isaeva EL Lapa SA Zasedatelev AS Litvinov VI Moroz AM Mirzabekov AD 《Vestnik Rossi?sko? akademii meditsinskikh nauk / Rossi?skaia akademiia meditsinskikh nauk》2002,(2):36-39
RCR-heteroduplex (GDA) and chip methods were used to detect rifampricin-resistant (RR) and rifampicin-sensitive (RS) Mycobacterium tuberculosis (MTB) in the samples from patients (sputum) and in the clinical isolates of MTB from these patients (MB/BacT liquid medium and Lowenstein Jensen's (LJ) solid medium. The efficiency of detecting RR and RS of MTB (from the sputum) is 100 and 92.3% in the chip and GDA tests, respectively. Correlations between GDA (sputum) and drug test (LJ) were 91.7%, that of chip (sputum) and drug test LJ, 88.5%, chip (sputum) and chip clinical isolates (LJ), 100%. The efficacy of GDA and chip in the detection of RR of MTB strains is under discussion. 相似文献
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Nontransferrin-bound iron in plasma from hemochromatosis patients: effect of phlebotomy therapy 总被引:2,自引:1,他引:1
Plasma from patients with iron overload resulting from idiopathic hemochromatosis contains nontransferrin-bound iron, measurable by the bleomycin, assay. During venesection therapy, the concentration of bleomycin iron declines in a way highly correlated with plasma ferritin concentrations. Even when patients had been venesected to give very low total plasma iron concentrations and high transferrin iron-binding capacity, bleomycin-detectable iron was still present at low concentrations. Bleomycin-detectable iron can stimulate damaging free radical reactions, and its persistence in plasma even after prolonged venesection might contribute to the tissue damage that results from iron overload. 相似文献
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In 38 patients after myocardial infarction changes of the main parameters of the central haemodynamics have been found with the aid of tetrapolar transthoracic rheography and phonotachooscillography as compared with a control group (20 practically healthy individuals). A direct interrelationship has been found between the value of the stroke volume of the heart and individual tolerance to exercise as determined by bicycle ergometer. A regression equation was derived with which rough individual tolerance to exercise can be calculated by the value of the stroke volume. By the mathematical method of paired and multiple correlations the direct relationship of the value of the cardiac stroke volume with the degree of coronary and cardiac insufficiency has been found. The sequence of functional methods of examination and control at the sanatorium stage of rehabilitation of patients after myocardial infarction is discussed. 相似文献
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OA Azizova AV Aseychev EM Beckman SN Moskvina OI Skotnikova NV Smolina YA Gryzunov GE Dobretsov 《Bulletin of experimental biology and medicine》2012,152(6):712-716
The dynamics of changes in albumin transport function during hypochlorite-induced oxidation of isolated albumin in blood plasma
and serum was studied with a fluorescent probe K-35. Binding of the probe K-35 to albumin was characterized by effective concentration
of albumin. Oxidative modification of proteins was evaluated by the content of carbonyl products of protein oxidation and
bityrosine fluorescent products. Oxidation with hypochlorite was accompanied by a decrease in the effective concentration
of albumin in albumin, diluted plasma, and serum and accumulation of carbonyl products of protein oxidation and bityrosine
fluorescent products. The decrease in the effective concentration of albumin during oxidation with hypochlorite can be explained
by oxidative damage to albumin binding sites. Oxidative modification of probe K-35 binding sites with hypochlorite contributes
to a decrease in effective concentration of albumin under pathological conditions. 相似文献