165 research outputs found

    The criterion for the unique solvability of the Dirichlet and Poincare spectral problems for the multidimensional Euler-Darbo u x-Poisson equation

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    In the cylindrical region of Euclidean space for the multi-dimensional Euler-Darbu-Poisson equation, the spectral problems of Dirichle and Poincare are considered. The solution is sought in the form of decomposition by multidimensional spherical functions. The theorem of existence and uniqueness of the classical solution has been proved. Conditions of unique solvability of the assigned tasks are obtained, which depend significantly on the height of the cylinde

    An association between TRP64ARG polymorphism of the B3 adrenoreceptor gene and some metabolic disturbances

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    <p>Abstract</p> <p>Backgrounds</p> <p>B3 adrenoreceptors (ADRB3) are abundant in adipose tissue and play the role in its metabolism and lipolysis. Some variants of the ADRB3 gene may predispose subjects for the development obesity and metabolic abnormalities in the setting of modern sedentary lifestyle. ADRB3 gene polymorphism association with metabolic disturbances has never been studied before in the ethnic Kyrgyz population.</p> <p>Aim</p> <p>To study an association between Trp64Arg polymorphism of the ADRB3 and metabolic syndrome (MS) components in an ethnic Kyrgyz group.</p> <p>Materials and methods</p> <p>213 Ethnic Kyrgyz volunteers over the age of 30 were enrolled in the study. The assessment plan for each individual comprised of general physical and anthropometric exams as well as laboratory tests (glucose, lipid panel, insulin) and genotyping by Trp64Arg polymorphism of the ADRB3. MS diagnosis was consistent with modified ATP III criteria (2005). Logistic regression analysis was performed to test the potential independent association between Arg64 allele with obesity, abdominal obesity (AO) and arterial hypertension (AH).</p> <p>Results</p> <p>Trp64Arg polymorphism of the ADRB3 was assessed in 213 individuals (145 men, 68 women) aged 30-73 (mean age 50.7 ± 7.6). Arg64 allele frequency was 0.239; ADRB3 genotype distribution among participants was: Trp64 homozygotes 54.5%, Trp64Arg 43.2% and Arg64 homozygotes 2.3%. There was an association between Trp64Arg и Arg64Arg genotypes and higher BMI, WC and obesity frequency (p < 0.00009), AO (p < 0.01), type 2 diabetes mellitus (DM) (p < 0.005) and lower high density cholesterol (HDL-C) level (p < 0.03). The logistic regression analysis showed the correlation of the Arg64 allele with obesity (OR 3.159; 95% CI 1.789-5.577) and AO (OR 1.973; 95% CI 1.118-3.481). The association between Arg64 allele and AH lost its significance after adjustment for obesity.</p> <p>Conclusion</p> <p>Arg64 allele of the ADRB3 gene in the studied group has an association with MS components such as obesity, AO and decreased HDL-C level.</p

    The Role of Fatalism in Resilience to Food Price Volatility in Bangladesh

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    Millions of people in Bangladesh suffer from hunger, unpredictable and unstable livelihoods, precarious living conditions and social injustice. Yet they survive and become resilient. However, the resilience achieved by the poor is minimal and incremental in nature and does not result in their wellbeing. Based on three years of qualitative research, this article attempts to understand the nature of and pathways to ‘resilience of the poor people'. The article argues that poor people's approach to ‘resilience’ is twofold. First, they perceive their poverty and associated problems as ‘Allah's will', with not much to be done about it. At the same time, they engage in continuous innovative practices to survive. These two worldviews together ('fatalism’ and ‘self?help') make the poor ‘resilient'. This also ‘partially’ explains the absence of strong activism, collective action and protests within a context of state failure (in terms of ensuring rights and entitlements to its citizens)

    Биологические микрочипы в экспресс-идентификации штаммов M. tuberculosis с множественной лекарственной устойчивостью у больных туберкулезом в Республике Кыргызстан

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    The aim of the study was to estimate spread of primary and secondary multiple drug resistant Mycobacterium tuberculosis (MBT) and to characterize rpoB, katG, inhA, and ahpC gene mutations of rifampicin (RIF) and isoniazid (INH) resistant MBT strains isolated from tuberculosis patients in Kyrgyz. We obtained 493 specimens from patients with pulmonary tuberculosis which were diagnosed based on clinical, X-ray, and bacteriological examination. Among them, newly diagnosed pulmonary tuberculosis was in 445 patients (90.2 %), and 48 of the patients (9.8 %) have already been treated for tuberculosis. Mutations of rpoB, KatG, inhA, and ahpC genes associated with RIF and INH resistance were detected by biological chip test. Sensitive MBT strains were detected in 47 % and resistant strains were in 53 % of the newly diagnosed patients. Single-drug resistance to RIF only was detected in 3 % of cases; resistance to INH was found in 20 %, resistance to both the drugs was detected in 30 % of the patients. In pre-treated patients single-drug resistance to RIF was defined in 4 % of cases, resistance to INH was in 8 %, resistance to both the drugs was estimated in 75 % of the patients. Therefore, we suppose that there is a high prevalence of multi-drug resistant MBT in Kyrgyz Republic: 30 % among newly diagnosed patients and 75 % among pre-treated patients. The main cause of RIF-resistance of MBT is Ser531→Leu mutation of rpoB gene, and the main cause of INHresistance is Ser315→Thr mutation of katG gene.Целью работы было изучить частоту встречаемости штаммов Mycobacterium tuberculosis (МБТ) с множественной лекарственной устойчивостью среди впервые выявленных и ранее пролеченных больных туберкулезом. Обследовано 493 больных (275 мужчин и 218 женщин) с клинически подтвержденным диагнозом легочного туберкулеза; 445 (90,2 %) пациентов относились к впервые выявленным больным и 48 (9,8 %) человек ранее получали лечение. Мутации в генах rpoB, katG, inhA и ahpC, обусловливающих устойчивость MБТ к рифампицину и изониазиду, определяли методом биологических микрочипов. Обнаружено, что 47 % впервые выявленных больных были инфицированы лекарственно чувствительными и 53 % – лекарственно устойчивыми штаммами МБТ. При этом монорезистентность только к рифампицину определена у 3 % больных, монорезистентность к изониазиду – у 20 %. Мультирезистентные штаммы у впервые выявленных больных выявлены в 30 % случаев. Среди ранее пролеченных больных лекарственно чувствительные штаммы выявлены у 13 %, лекарственно устойчивые штаммы – у 87 % больных. Монорезистентность к рифампицину определена у 4 %, монорезистентность к изониазиду – у 8 % больных. МБТ с мультирезистентностью выявлены у 75 % обследованных. Таким образом, в Республике Кыргызстан отмечается высокий удельный вес туберкулеза с множественной лекарственной устойчивостью как среди впервые выявленных (30 %), так и среди пациентов, ранее получавших лечение (75 %). Устойчивость МБТ к рифампицину чаще всего обусловлена мутацией Ser531→Leu 531 кодона гена rpoB. Устойчивость МБТ к изониазиду в основном обусловлена мутацией Ser315→Thr 315 кодона гена katG

    Polymorphism in the TRP8 gene in Kyrgyz population: putative association with highland adaptation

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    The human TRPM8 gene encodes a receptor mediating cold sensitivity, and this fact points to its putative role in cold adaptation. The structural variability of the TRPM8 gene for five single-nucleotide polymorphisms (SNPs) has been studied in Kyrgyz population. The SNPs are located in coding regions of the gene, and three of them are confined to a segment of 20 bp in exon 7. The frequencies of minor SNP alleles are: rs13004520 G/C = 0.06; rs28901637 А/Т = 0.13; rs11562975 G/C = 0.27; rs7593557 G/A = 0.21; rs11563071 С/G = 0.12. The analyzed sample of Kyrgyz population includes 275 individuals living at different altitudes and under drastically different climatic conditions. The frequency of the minor rs11562975 allele in highlanders (living above 2 800 m A. S. L.) is one-third lower than in residents of lower regions (760–2 800 m A. S. L.; p &lt; 0.01). This result presumes a selective role of rs11562975 in cold adaptation. Comparison of haplotype frequencies in Kyrgyz people with Europeans, East Asians, and Africans shows a clear narrowing of genotype variation in Europeans in comparison to all others. Probably, this phenomenon is related to a population size decline (bottleneck effect) during the evolution. We consider the exon– intron structure of the TRPM8 gene. Epigenetic markers in the vicinity of the gene have been analyzed. Two strong binding sites for insulator ctcf proteins are present there. They are likely to be associated with chromatin conformation and alternative splicing regulation. A structure–functional characterization of genes for the TRP protein family is provided

    Does Forced Voting Result in Political Polarization?

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    This paper estimates the effects of the compulsory voting laws on individuals´ political orientations though a regression discontinuity framework. The identification comes from Brazil´s dual voting system – voluntary and compulsory – whose exposure is determined based on citizens’ dates of birth. Using self-collected data, we find that compulsory voting has sizable effects on individuals´ political preferences, making them more likely to identify with a political party and to become oriented towards ideological extremes

    Phosphodiesterase-5 Inhibition Mimics Intermittent Reoxygenation and Improves Cardioprotection in the Hypoxic Myocardium

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    Although chronic hypoxia is a claimed myocardial risk factor reducing tolerance to ischemia/reperfusion (I/R), intermittent reoxygenation has beneficial effects and enhances heart tolerance to I/R. Aim of the study: To test the hypothesis that, by mimicking intermittent reoxygenation, selective inhibition of phosphodiesterase-5 activity improves ischemia tolerance during hypoxia. Adult male Sprague-Dawley rats were exposed to hypoxia for 15 days (10% O2) and treated with placebo, sildenafil (1.4 mg/kg/day, i. p.), intermittent reoxygenation (1 h/day exposure to room air) or both. Controls were normoxic hearts. To assess tolerance to I/R all hearts were subjected to 30-min regional ischemia by left anterior descending coronary artery ligation followed by 3 h-reperfusion. Whereas hypoxia depressed tolerance to I/R, both sildenafil and intermittent reoxygenation reduced the infarct size without exhibiting cumulative effects. The changes in myocardial cGMP, apoptosis (DNA fragmentation), caspase-3 activity (alternative marker for cardiomyocyte apoptosis), eNOS phosphorylation and Akt activity paralleled the changes in cardioprotection. However, the level of plasma nitrates and nitrites was higher in the sildenafil+intermittent reoxygenation than sildenafil and intermittent reoxygenation groups, whereas total eNOS and Akt proteins were unchanged throughout. Conclusions: Sildenafil administration has the potential to mimic the cardioprotective effects led by intermittent reoxygenation, thereby opening the possibility to treat patients unable to be reoxygenated through a pharmacological modulation of NO-dependent mechanisms

    Perceptions of the appropriate response to norm violation in 57 societies

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    Norm enforcement may be important for resolving conflicts and promoting cooperation. However, little is known about how preferred responses to norm violations vary across cultures and across domains. In a preregistered study of 57 countries (using convenience samples of 22,863 students and non-students), we measured perceptions of the appropriateness of various responses to a violation of a cooperative norm and to atypical social behaviors. Our findings highlight both cultural universals and cultural variation. We find a universal negative relation between appropriateness ratings of norm violations and appropriateness ratings of responses in the form of confrontation, social ostracism and gossip. Moreover, we find the country variation in the appropriateness of sanctions to be consistent across different norm violations but not across different sanctions. Specifically, in those countries where use of physical confrontation and social ostracism is rated as less appropriate, gossip is rated as more appropriate.info:eu-repo/semantics/publishedVersio
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