33 research outputs found
Economic, Political and Institutional Determinants of Budget Deficits Volatility in Selected Asian Countries.
In the present study the economic, political and institutional
sources of budgets deficits are analysed for two regions South Asia and
ASEAN countries for the period 1984 to 2010. The results reveal that
high income, rising inflation and large budget to GDP ratio are
associated with budget instability, where as a strong inertia in budget
deficit volatility exists. The exposure of more external shocks make the
budget deficit more volatile, however, countries with high population
growth have less volatile budget deficits. The results indicate that
high level of political stability and democracy and improvement in
social and economic condition reduces the budget deficit volatility.
High corruption and low institutional quality lead to more fluctuations
in the budget deficit. The results suggest that political and
institutional factors have a direct impact on fiscal instability beyond
the economic reasons to effect fluctuations. The results of the current
study leads to important implication that by improving the quality of
institutions, creating situations for economic stability and moving
towards democratic regimes would ensure more stable fiscal deficits and
resultantly positive effect on the long term economic growth. JEL
classification: H61, D70, E60 Keywords: Budget Deficits Volatility, Per
Capita GDP, Openness, Inflation, Political Stability, Institutional
Quality, Democracy and Corruptio
Quality evaluation of yoghurt stabilized with sweet potato (Ipomoea batatas) and taro (Colocassia esculenta) starch
Stabilizers are important component in manufactured products such as yoghurt. The addition of stabilizers improves body, texture, appearance, mouth feel and prevents technical defects such as synersis in yoghurts. In this study starch was extracted from plant sources (sweet potato, taro) with and without use of chemicals. Yoghurt was enriched with different levels of extracted starch. Yoghurt samples were analyzed for physicochemical and functional attributes such as pH, acidity, synersis, water holding capacity, viscosity, total solids and sensory profile. Use of chemically extracted starches at the level of 0.3-0.4% (Sweet potato) and 0.2-0.3% (Taro)  in yoghurt manufacturing showed better results in  terms of lowering synersis, increasing water holding capacity, viscosity and overall acceptability as compared to the yoghurt containing stabilizer i.e. gelatin 0.5% w/w. Use of starches did not significantly affect the sensory attributes. Yoghurt that contains sweet potato and taro starch at 0.5% gave excellent results for water holding capacity, viscosity and for all sensory attributes as compared to gelati
Papillary Carcinoma Thyroid in a Nine-year-old Child: A Case Report
Thyroid enlargement and nodules are very rare in children, but when they occur, the chance of malignancy among these nodules is very high. Thyroid carcinoma is rare in childhood, but in the last two decades, its incidence has increased two-fold. A painless nodule in the neck is the most common presentation of the disease. Dysphagia, hoarseness, cervical lymphadenopathy, weight loss, and fatigue are other presentations. Surgical resection is the primary therapy for thyroid cancer. Levothyroxine and Iodine-131 (I131) are usually used as adjunctive therapy. This article presents the case of a 9-year-old girl who referred to our center with the chief complaint of a neck mass. Her symptoms had begun 6 months earlier
Mycolic acids : deciphering and targeting the Achilles' heel of the tubercle bacillus
Mycolic acids are unique long chain fatty acids found in the lipid-rich cell walls of mycobacteria including the tubercle bacillus Mycobacterium tuberculosis. Essential for viability and virulence, enzymes involved in the biosynthesis of mycolic acids represent novel targets for drug development. This is particularly relevant to the impact on global health given the rise of multidrug resistant and extensively drug resistant strains of M. tuberculosis. In this review, we discuss recent advances in our understanding of how mycolic acid are synthesised, especially the potential role of specialised fatty acid synthase complexes. Also, we examine the role of a recently reported mycolic acid transporter MmpL3 with reference to several reports of the targeting of this transporter by diverse compounds with anti-M. tuberculosis activity. Additionally, we consider recent findings that place mycolic acid biosynthesis in the context of the cell biology of the bacterium, viz its localisation and co-ordination with the bacterial cytoskeleton, and its role beyond maintaining cell envelope integrity
4-Hydroxybutyric Aciduria as a Rare Presentation of Global Developmental Delay in Children: Case Report of Two Different Patients
Succinic semialdehyde dehydrogenase (SSADH) deficiency or 4-Hydroxybutyric Aciduria is an autosomal recessive inherited disorder of amma-aminobutyric acid (GABA) degradation. It is characterized by developmental delay, infantile-onset hypotonia, cognitive impairment language deficit, and ataxia. Epilepsy, aggression, Hyperkinetic behavior, hallucinations, and sleep disturbances have been described in about half of the patients, more frequently in older individuals. Its management is largely symptomatic, conducted at the treatment of seizures and neurobehavioral disorder. We present two girls with chief complaint of hypotonia and developmental delay how referred to department of Pediatrics (Ghaem hospital), Mashhad, Iran
Short-course administration of a traditional herbal mixture ameliorates asthma symptoms of the common cold in children
Objective: Asthma is an increasing chronic respiratory disease affecting over 300 million people worldwide. Several studies have shown that herbal remedies may improve asthma control and reduce asthma symptoms. In this study, the effects of short-course administration of an herbal mixture (ASMATUSTM) in asthmatic children during viral respiratory tract infection, were evaluated. Materials and Methods: Forty-six children (7-12 years old) with intermittent asthma were enrolled in this double-blind randomized clinical trial. At the onset of common cold symptoms, the patients were randomly assigned to daily receive either the herbal mixture (comprised of Matricaria chamomilla, Althaea officinalis, Malva sylvestris, Hyssopus officinalis, Adiantum capillus-veneris, Glycyrrhiza glabra and Ziziphus jujube) or placebo for 5 days. Primary outcomes included day symptoms, night symptoms, and asthma attacks. Secondary outcomes included Peak Expiratory Flow Rate (PEFR), the need for β-agonist administration, oral prednisolone usage, necessity for re-visit due to uncontrolled or insupportable symptoms, as well as the number of hospital admissions and days absent from school. Results: the herbal mixture significantly decreased the severity of coughs (p=0.049) and nighttime awakenings (p=0.029) in comparison to placebo. There was no significant reduction in wheezing, tachypnea, respiratory distress, PEF rate, absence from school, outpatient visits, asthma exacerbation, oral prednisolone or β-agonist usage and hospitalization. Conclusion: Short-course of herbal mixture this traditional herbal mixture, starting at the onset of signs of a viral respiratory tract infection in children with intermittent asthma, reduced cough and nights awakening. Further studies should be done to determine the most effective herbal admixture, as well as dose and duration of treatment
The mycolic acid reductase Rv2509 has distinct structural motifs and is essential for growth in slow growing mycobacteria
The final step in mycolic acid biosynthesis in Mycobacterium tuberculosis is catalysed by a mycolyl reductase encoded by the Rv2509 gene. Sequence analysis and homology modelling indicates that Rv2509 belongs to the short‐chain fatty acid dehydrogenase/reductase (SDR) family, but with some distinct features that warrant its classification as belonging to a novel family of short‐chain dehydrogenases. In particular, the predicted structure revealed a unique α‐helical C‐terminal region which we demonstrated to be essential for Rv2509 function, though this region did not seem to play any role in protein stabilisation or oligomerisation. We also show that unlike the M. smegmatis homologue which was not essential for growth, Rv2509 was an essential gene in slow growing mycobacteria. A knockdown strain of the BCG2529, the Rv2509 homologue in Mycobacterium bovis BCG was unable to survive following conditional depletion of BCG2529. This conditional depletion also led to a reduction of mature mycolic acid production and accumulation of intermediates derived from 3‐oxo‐mycolate precursors. Our studies demonstrate novel features of the mycolyl reductase Rv2509 and outline its role in mycobacterial growth, highlighting its potential as a new target for therapies
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Global burden of 288 causes of death and life expectancy decomposition in 204 countries and territories and 811 subnational locations, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021
BACKGROUND Regular, detailed reporting on population health by underlying cause of death is fundamental for public health decision making. Cause-specific estimates of mortality and the subsequent effects on life expectancy worldwide are valuable metrics to gauge progress in reducing mortality rates. These estimates are particularly important following large-scale mortality spikes, such as the COVID-19 pandemic. When systematically analysed, mortality rates and life expectancy allow comparisons of the consequences of causes of death globally and over time, providing a nuanced understanding of the effect of these causes on global populations. METHODS The Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2021 cause-of-death analysis estimated mortality and years of life lost (YLLs) from 288 causes of death by age-sex-location-year in 204 countries and territories and 811 subnational locations for each year from 1990 until 2021. The analysis used 56 604 data sources, including data from vital registration and verbal autopsy as well as surveys, censuses, surveillance systems, and cancer registries, among others. As with previous GBD rounds, cause-specific death rates for most causes were estimated using the Cause of Death Ensemble model-a modelling tool developed for GBD to assess the out-of-sample predictive validity of different statistical models and covariate permutations and combine those results to produce cause-specific mortality estimates-with alternative strategies adapted to model causes with insufficient data, substantial changes in reporting over the study period, or unusual epidemiology. YLLs were computed as the product of the number of deaths for each cause-age-sex-location-year and the standard life expectancy at each age. As part of the modelling process, uncertainty intervals (UIs) were generated using the 2·5th and 97·5th percentiles from a 1000-draw distribution for each metric. We decomposed life expectancy by cause of death, location, and year to show cause-specific effects on life expectancy from 1990 to 2021. We also used the coefficient of variation and the fraction of population affected by 90% of deaths to highlight concentrations of mortality. Findings are reported in counts and age-standardised rates. Methodological improvements for cause-of-death estimates in GBD 2021 include the expansion of under-5-years age group to include four new age groups, enhanced methods to account for stochastic variation of sparse data, and the inclusion of COVID-19 and other pandemic-related mortality-which includes excess mortality associated with the pandemic, excluding COVID-19, lower respiratory infections, measles, malaria, and pertussis. For this analysis, 199 new country-years of vital registration cause-of-death data, 5 country-years of surveillance data, 21 country-years of verbal autopsy data, and 94 country-years of other data types were added to those used in previous GBD rounds. FINDINGS The leading causes of age-standardised deaths globally were the same in 2019 as they were in 1990; in descending order, these were, ischaemic heart disease, stroke, chronic obstructive pulmonary disease, and lower respiratory infections. In 2021, however, COVID-19 replaced stroke as the second-leading age-standardised cause of death, with 94·0 deaths (95% UI 89·2-100·0) per 100 000 population. The COVID-19 pandemic shifted the rankings of the leading five causes, lowering stroke to the third-leading and chronic obstructive pulmonary disease to the fourth-leading position. In 2021, the highest age-standardised death rates from COVID-19 occurred in sub-Saharan Africa (271·0 deaths [250·1-290·7] per 100 000 population) and Latin America and the Caribbean (195·4 deaths [182·1-211·4] per 100 000 population). The lowest age-standardised death rates from COVID-19 were in the high-income super-region (48·1 deaths [47·4-48·8] per 100 000 population) and southeast Asia, east Asia, and Oceania (23·2 deaths [16·3-37·2] per 100 000 population). Globally, life expectancy steadily improved between 1990 and 2019 for 18 of the 22 investigated causes. Decomposition of global and regional life expectancy showed the positive effect that reductions in deaths from enteric infections, lower respiratory infections, stroke, and neonatal deaths, among others have contributed to improved survival over the study period. However, a net reduction of 1·6 years occurred in global life expectancy between 2019 and 2021, primarily due to increased death rates from COVID-19 and other pandemic-related mortality. Life expectancy was highly variable between super-regions over the study period, with southeast Asia, east Asia, and Oceania gaining 8·3 years (6·7-9·9) overall, while having the smallest reduction in life expectancy due to COVID-19 (0·4 years). The largest reduction in life expectancy due to COVID-19 occurred in Latin America and the Caribbean (3·6 years). Additionally, 53 of the 288 causes of death were highly concentrated in locations with less than 50% of the global population as of 2021, and these causes of death became progressively more concentrated since 1990, when only 44 causes showed this pattern. The concentration phenomenon is discussed heuristically with respect to enteric and lower respiratory infections, malaria, HIV/AIDS, neonatal disorders, tuberculosis, and measles. INTERPRETATION Long-standing gains in life expectancy and reductions in many of the leading causes of death have been disrupted by the COVID-19 pandemic, the adverse effects of which were spread unevenly among populations. Despite the pandemic, there has been continued progress in combatting several notable causes of death, leading to improved global life expectancy over the study period. Each of the seven GBD super-regions showed an overall improvement from 1990 and 2021, obscuring the negative effect in the years of the pandemic. Additionally, our findings regarding regional variation in causes of death driving increases in life expectancy hold clear policy utility. Analyses of shifting mortality trends reveal that several causes, once widespread globally, are now increasingly concentrated geographically. These changes in mortality concentration, alongside further investigation of changing risks, interventions, and relevant policy, present an important opportunity to deepen our understanding of mortality-reduction strategies. Examining patterns in mortality concentration might reveal areas where successful public health interventions have been implemented. Translating these successes to locations where certain causes of death remain entrenched can inform policies that work to improve life expectancy for people everywhere. FUNDING Bill & Melinda Gates Foundation
Studies on a mycolic acid reductase in mycobacterium tuberculosis
Mycolic acids are essential components of the unique, lipid rich cell wall of M. tuberculosis. However, enzymes involved in the biosynthesis of mycolic acids remain under exploited as drug targets despite one of the early and hallmark anti-TB drug isoniazid which inhibits mycolate biosynthesis. Previous studies from our laboratory identified mycolate processing enzymes and transporters. A mycolyl reductase was identified to play a role in the final reduction step in mycolic acid biosynthesis in Mycobacterium smegmatis and Corynebacterium glutamicum. Using gene knockdowns I have now extended these studies to slow growing mycobacteria like Mycobacterium tuberculosis and Mycobacterium bovis BCG. The results in this thesis clearly indicated that the mycolyl reductase Rv2509 involved in the final stages of mycolic acid biosynthesis is essential in M.tuberculosis and M.bovis BCG. Furthermore using BLAST-P alignments and predictions of a 3D structure we identified unique domains and residues in the mycolate processing enzymes, and present functional studies on the same. This unique domain and other residues identified from in silico analysis of the structure of Rv2509 were important for the functionality of the protein following complementation studies. Purification of the protein of Rv2509 led to the identification of the possible substrate
Approximate Solution of Nonlinear Klein-Gordon Equation Using Sobolev Gradients
The nonlinear Klein-Gordon equation (KGE) models many nonlinear phenomena. In this paper, we propose a scheme for numerical approximation of solutions of the one-dimensional nonlinear KGE. A common approach to find a solution of a nonlinear system is to first linearize the equations by successive substitution or the Newton iteration method and then solve a linear least squares problem. Here, we show that it can be advantageous to form a sum of squared residuals of the nonlinear problem and then find a zero of the gradient. Our scheme is based on the Sobolev gradient method for solving a nonlinear least square problem directly. The numerical results are compared with Lattice Boltzmann Method (LBM). The 2 , ∞ , and Root-Mean-Square (RMS) values indicate better accuracy of the proposed method with less computational effort