Comparison of ivermectin and thiabendazole in the treatment of uncomplicated human Strongyloides stercoralis infection

Ivermectin is the drug of choice in the treatment of onchocerciasis, and has been proven to be highly effective against Strongyloides stercoralis. This study compares ivermectin's efficacy and safety with that of thiabendazole, an established drug of choice for strongyloidiasis, in 252 confirmed cases of uncomplicated human intestinal strongyloidiasis. Subjects were administered orally with ivermectin (200 mg/kg) in a single dose or thiabendazole, 25 mg/kg, twice daily (50mg/kg/day) for 3 consecutive days. Stools were parasitologically examined 7, 21 and 30 days after treatment. Only 18 of 113 and 22 of 103 ivermectin- and thiabendazole-treated subjects, respectively, had stools positive for larvae 30 days post-treatment. This indicates parasitological cure rates of 84.07% and 78.64% for ivermectin and thiabendazole, respectively. Ivermectin was not significantly more effective than thiabendazole (P < 0.05). There was considerable reduction in parasite output in parasitologically uncured subjects with mean of 81% in ivermectin-treated and 75% in thiabendazole-treated groups, respectively. Clinical adverse reactions were mild and transient in subjects treated with ivermectin, while they varied from mild to severe in those treated with thiabendazole. Single-dose ivermectin provides efficacy comparable with standard, multiple-dose thiabendazole, with a much reduced incidence of adverse effects and consequently better patient compliance. Key words: Ivermectin, thiabendazole, Strongyloides stercoralis, strongyloidiasis. African Journal of Biotechnology Vol.2(11) 2003: 465-46

Hydrogen bonding as a clustering agent in protic ionic liquids: like-charge vs opposite-charge dimer formation

The local structure of a series of homologous protic ionic liquids (PILs) is investigated using ab initio computations and ab initio-based molecular dynamics. The purpose of this work is to show that in PILs the network of hydrogen bonds may promote like-charge clustering between anionic species. We correlate the theoretical evidence of this possibility with viscosity experimental data. The homologous series of liquids is obtained by coupling choline with amino acid anions and varying the side chain. We find that the frictional properties of the liquids are clearly connected to the ability of the side chain to establish additional hydrogen bonds (other than the trivial cation–anion interaction). We also show that the large variation of bulk properties along the series of compounds can be explained by assuming that one of the sources of friction in the bulk liquid is the like-charge interaction between anions

Relative prevalence of the human hookworm species, Necator americanus and Ancylostoma duodenale in an urban community in Ogun State, Nigeria

In order to estimate the proportion of hookworm infections represented by Necator americanus and Ancylostoma duodenale, the 2 major species of human hookworms in Nigeria, stool samples from 1253 hookworm-positive schoolchildren were cultured to the third-stage (L3), filariform larvae, using the Harada-Mori test-tube method. N. americanus larvae were recovered from a total of 1177 (93.9%) coprocultures while A. duodenale larvae were recovered from a total of 274 (21.9%) stool cultures. 58.2% of the hookworm infections were due solely to N. americanus, 6.1% solely to A. duodenale and 25.8% were mixed infections with both species. In all mixed infections, much higher number of N. americanus larvae were recorded compared with those of A. duodenale. Key words: Hookworm species, Necator americanus, Ancylostoma duodenale, filariform larvae. African Journal of Biotechnology Vol.2(11) 2003: 470-47

Effects of varying concentrations of the crude aqueous and ethanolic extracts of Dalbergia sissoo plant parts on Biomphalaria pfeifferi egg masses.

This study evaluated, using replicated laboratory bioassays, the toxicities of the crude aqueous and ethanolic extracts of Dalbergia sissoo Roxb. 1832 (family Leguminosae) fruits, leaves, roots and stem bark against egg masses of Biomphalaria pfeifferi (Krauss, 1848), the snail intermediate host of Schistosoma mansoni (Sambon, 1907) in Nigeria. Viable 0-24 hr-old embryonated egg masses were separately exposed to five different concentrations (7.81-2000 mg/l) of extracts for 24 hrs, washed in dechlorinated tap water and incubated at room temperature for a maximum of 4 weeks. The LC50 and LC90 values of test extracts for egg masses were calculated by probit analysis. The activities of the tested extracts were concentration-dependent. However, only the ethanolic extract of the fruits demonstrated significant activity (24 hr-LC90 value < 100 mg/l: 89.29 mg/l). Mortalities of eggs were manifested at the gastrula/exogastrula and or the prehatch snail stage of development. The percentage of dead embryos at the prehatch snail stage decreased while the deaths of embryos at the gastrula/exogastrula stage increased, with increasing concentration of extract. Lethality of the ethanolic extract of D. sissoo fruits to embryonated egg masses of B. pfeifferi is an added advantage to its potential development for use as a plant molluscicide, as the overall efficacy of a molluscicide is greatly enhanced if it also shows significant toxicity towards snail eggs.Key words: Dalbergia sissoo, Biomphalaria pfeifferi, Schistosoma mansoni, Egg masse

Assessing n‐type organic materials for lithium batteries: A techno‐economic review

The high demand for critical minerals such as lithium, copper, nickel, and cobalt, required for lithium-ion batteries, has raised questions regarding the feasibility of maintaining a steady and affordable supply of raw materials for their production. In the last years, researchers have shifted their attention toward organic materials, which are potentially more widely available, affordable, and sustainable due to the ubiquitous presence of the constituent organic elements. The n-type materials have a redox mechanism analogous to that of lithium-ion cathodes and anodes, hence they are suitable for a meaningful comparison with the state-of-the-art technology. While many reviews have evaluated the properties of organic materials at the material or electrode level, herein, the properties of n-type organic materials are assessed in a complex system, such as a full battery, to evaluate the feasibility and performance of these materials in commercial-scale battery systems. The most relevant cathode materials for organic batteries are reviewed, and a detailed cost and performance analysis of n-type material-based battery packs using the BatPaC 5.0 software is presented. The analysis considers the influence of electrode design choices, such as the conductive carbon content, active material mass loading, and electrode density, on energy density and cost. The potential of n-type organic materials as a low-cost and sustainable solution for energy storage applications is highlighted, while emphasizing the need for further advancements of organic materials for energy storage applications

Low Birth Weight and Its Associated Risk Factors in The United States Using National Survey of Children Health Data 2016-2020

Background: Low birth weight (LBW) is defined by the World Health Organization as birth weight of less than 2500g, and it is one of the leading causes of infant morbidity and mortality globally. LBW is indicative of poor prenatal care and nutrition in pregnancy, impacting on non-communicable disease risk burden throughout life. The main objective of this study was to examine the association between maternal socio-demographics and lifestyle behaviors with birth outcomes to elicit risk patterns among mothers of infants of LBW in the United States.Methods: National Survey of Children Health data for the years 2016-2020 were used in this analysis; n = 174,551, aged 0-17 years, 13,752 (9.19%) with LBW (Results: The average prevalence of LBW infants born between 2016-2020 was 9.19%, and 1.45% meeting the threshold of very LBW. In terms of age, the odds of LBW among mothers aged 18 or below were 32.9% higher (odds ratio (OR) 1.33, 95% confidence interval (CI) 1.08-1.64); the odds of LBW among mothers older than 35 were 21.2% higher (1.21, 1.10-1.33) than mothers between ages 19-35. Based on maternal health status, the odds of LBW was 95.5% higher among children whose parents reported good health vs. excellent health (1.96, 1.71-2.22). However, the odds of LBW was nearly three times higher if the parent’s health status was poor vs. excellent (2.98, 2.33-3.81). Based on race, the odds of delivering LBW babies was higher for African American (1.91, 1.73-2.11), Asian (1.56, 1.32-1.84), Native Hawaiian, and Other Pacific Islander (1.71, 1.05-2.80) when compared with White mothers. We also found that the odds of LBW in households with cigarettes use was 19.6% (1.20, 1.08-1.32) higher than in households without cigarette use. Presence of parents or guardians in households with mental illness or having drug/alcohol problems were associated with greater odds of LBW (1.18, 1.03-1.36) and (1.18, 1.05-1.33) respectively compared with households reporting none. The odds of LBW were lower among households where parents or guardians reported being married vs. single (0.78, 0.72-0.85) and among those reporting some college education or above vs. high school or less (0.84, 0.77-0.93). Conclusion: Results of our study revealed that there is a greater risk of LBW babies among non-White mothers who: had high school education or less, were unmarried, younger than 18 or older than 35, and lived in households where smoking, substance use problems, or mental illness were present. This can inform health promotion and clinical guidance during prenatal care to provide interventions tailored to the healthcare needs of mothers at risk for LBW babies to disrupt patterns of LBW children who stand to face a lifetime of poor health outcomes

Lithium Batteries and the Solid Electrolyte Interphase (SEI)—Progress and Outlook

Interfacial dynamics within chemical systems such as electron and ion transport processes have relevance in the rational optimization of electrochemical energy storage materials and devices. Evolving the understanding of fundamental electrochemistry at interfaces would also help in the understanding of relevant phenomena in biological, microbial, pharmaceutical, electronic, and photonic systems. In lithium-ion batteries, the electrochemical instability of the electrolyte and its ensuing reactive decomposition proceeds at the anode surface within the Helmholtz double layer resulting in a buildup of the reductive products, forming the solid electrolyte interphase (SEI). This review summarizes relevant aspects of the SEI including formation, composition, dynamic structure, and reaction mechanisms, focusing primarily on the graphite anode with insights into the lithium metal anode. Furthermore, the influence of the electrolyte and electrode materials on SEI structure and properties is discussed. An update is also presented on state-of-the-art approaches to quantitatively characterize the structure and changing properties of the SEI. Lastly, a framework evaluating the standing problems and future research directions including feasible computational, machine learning, and experimental approaches are outlined

Locally Concentrated Ionic Liquid Electrolytes for Lithium‐Metal Batteries

Non-flammable ionic liquid electrolytes (ILEs) are well-known candidates for safer and long-lifespan lithium metal batteries (LMBs). However, the high viscosity and insufficient Li+ transport limit their practical application. Recently, non-solvating and low-viscosity co-solvents diluting ILEs without affecting the local Li+ solvation structure are employed to solve these problems. The diluted electrolytes, i.e., locally concentrated ionic liquid electrolytes (LCILEs), exhibiting lower viscosity, faster Li+ transport, and enhanced compatibility toward lithium metal anodes, are feasible options for the next-generation high-energy-density LMBs. Herein, the progress of the recently developed LCILEs are summarised, including their physicochemical properties, solution structures, and applications in LMBs with a variety of high-energy cathode materials. Lastly, a perspective on the future research directions of LCILEs to further understanding and achieve improved cell performances is outlined

Risk Factors Associated with Pulmonary Disease Among Hospitalized Patients in The United States

Background: The etiology of pulmonary disease is complex and influenced by various factors, resulting in a significant public health issue, with 16 million Americans living with chronic obstructive pulmonary disease (COPD) and 24 million with asthma, and cases are on the rise. The purpose of this study was to explore demographic, health status, and lifestyle behaviors with pulmonary disease so patterns of risk can be understood and inform interventions. Methods: This cross-sectional study utilized the National Inpatient Sample Data from 2019 (NIS 2019). The predictor variables consisted of: demographics (age (18+), sex, race), health status (obesity, depression, diabetes), lifestyle behaviors (smoking, alcohol use, and aspirin use), and the outcome variable was pulmonary disease. To ensure accuracy, the data was weighted by the variable discharge weight (DISCWT), and chi-square analyses and ANOVA tests were conducted to determine the independence of categorical and numerical predictor variables. Descriptive statistics were conducted for all variables, simple and multiple logistic regression analyses were performed to identify factors that contribute to the likelihood of having pulmonary disease. Results: The sample of the NIS 2019 data included 6,043,654 cases of which, 22.65% of inpatients had pulmonary disease. The collective sample demographic characteristics were: mean age of 58.4 years, and more than half of inpatients were females (57.05% compared to 42.95% males). In terms of health, 17.75% of the sample were obese, 28.8% had diabetes, and 14.25% were depressed. Within the collective sample, 16.8% of inpatients reported smoking, 9.09% drank alcohol, and 14.51% consumed aspirin (long-term (current) use of aspirin). Results of the multivariate statistical analyses reveal that individuals who were obese were 68.3% more likely to have pulmonary disease compared to non-obese patients (aOR = 1.683, CI 1.679-1.686, pConclusion: Results of our study provide important insights between pulmonary disease and associated risk patterns. As pulmonary symptoms have risen in the wake of the COVID-19 pandemic, there is an urgent public health need to explore disruption of risk pathways to avoid overwhelming fragile global healthcare systems

Do Heavy Smoking and Early Onset of Smoking and Heavy Alcohol Intake Increase the Chance of Heart Condition?

Background: Cardiovascular disease (CVD) is the leading cause of death globally since the turn of the century. One major risk factor is tobacco smoking with a particular risk associated with early initiation/greater duration. Research also indicates that alcohol use can offer both risk or protective cardiovascular benefits depending on consumption characteristics (intensity, frequency, dose, type). The purpose of this study is to examine the early onset of smoking, heavy smoking, and alcohol behavior as they relate to CVD risk. Methods: Using the data from the 2019 National Survey on Drug Use and Health (N=56,136), logistic regression analysis were conducted to examine trends in heavy substance use predictive of CVD risk (Independent variables of heavy substance use: number of cigarettes smoked per day, ≤ 12 years of tobacco smoking, ≥ 5 drinks for males or ≥ 4 drinks for females on each of 5 or more days in the past 30 days; and the dependent variable - ever told by a doctor or other health care professional that you had heart condition) while controlling for sociodemographic factors. Results: Overall, 19.7% of the study population reported CVD conditions, 5.9% heavy alcohol consumption, and 4.9% early onset of smoking. Overall, the odds of having heart condition among heavy alcohol drinkers was 23.6% less than those who were not heavy alcohol drinkers (odds ratio (OR): 0.76, 95% confidence interval (CI): (0.63-0.92), 44% more among those smoked 26 or more cigarettes per day than 25 or less 1.44 (1.01-2.05), 49% more among those with early onset of smoking than none 1.49 (1.15-1.93). By age, we found that heavy alcohol consumption could be either risk factor or protective factor of heart condition or no effect on heart condition across different age groups: for aged 12-18, OR 1.69 (CI 0.69-4.16); 19-25, 0.75 (0.48-1.15), 26-29, 1.21 (0.57-2.53); 30-34, 0.80 (0.36-1.77); 35-49, 0.61 (0.40-0.93); 50-64, 1.12 (0.77-1.62); \u3e64, 0.93 (0.57-1.52). Based on gender, CVD risk was higher in males than females, 1.22 (1.13-1.32). In terms of race, the odds of CVD risk were lower for all groups when compared with non-Hispanic White. Based on income, the odds of CVD risk were higher in high-income earners with at least a college education when compared to low-income earners with high school education or less (≥$50k vs.Conclusion: Study findings demonstrate that the association of heavy alcohol consumption related to CVD risk varied by age. For heavy tobacco smoking, early onset of tobacco smoking, being male, white race, having above high school level education, high income, and advanced age were found to be significant predictors of CVD risk. Future observational studies should be performed to determine the combined effects of heavy alcohol consumption and heavy smoking as it relates to CVD risk by other behavioral risk factors such as types of alcohol consumed (i.e, spirits vs wine) and related behaviors