12 research outputs found
Effect of Light Intensity on the Total Flavonoid and Total Phenolic Contents of Mikania Micrantha and Tridax Procumbens
Flavonoid and phenolics are secondary metabolites produced by plants in response to harsh environmental conditions. Light is one of the most important factor that affects their production. Mikania micrantha and Tridax procumbens are plants belonging to Asteraceae family, and they have bioactivity due to their flavonoid and phenolic contents. The objective of the research is to determine the effect of varying light intensities on the total flavonoid and total phenolic contents of M. micrantha and T. procumbens using three solvents (ethanol, methanol and water). Total flavonoid contents was determined based on the aluminium chloride colorimetry method while total phenolic contents was determined based on the folin-chiocalteau reagent. The results obtained in the study shows that ethanol recovers more flavonoid and phenolic than the other solvents (P < 0.05). Besides, T. procumbens had more flavonoid and phenolic content compared to M. micrantha (P < 0.05). Nevertheless, the flavonoid and phenolic contents recovered from sun exposed plants was more than that recovered from shaded plants (P < 0.05). This leads to a conclusion that high light intensity can increase the concentration of flavonoid and phenolic of M. micrantha and T. procumbens
Some Aspects of the Geology and Environmental Impact Assessment of a Proposed Gold Mining Site X in Borgu Local Government Area of Niger State, Nigeria
Proposed Gold mining Site X is located on Nigerian basement rocks in the Borgu Local Government Area of Niger State. The geology and geochemistry of the rock formations in a mining site contribute significantly to understanding the economics of the mineral deposits and the impacts on the environment, particularly the surface and groundwater viz-a-viz the health of the community inhabitants, soil, vegetation and other salient parameters, including weather conditions and socio-economy of the people. The geology and geochemistry of rock units, soils, stream sediments and water of Site X indicate rich deposits of Gold attractive for exploitation, concentrated in three delineated portions of the site as “Concentrates” A, B, C. With these results and impending mining of the gold deposits, some aspects of the environmental impact of mining the gold resources have been studied and reported herein. This is to ensure successful mining operations with minimum negative impacts on the surrounding environment when the applicant mining company obtains a mining lease from the Mining Cadastre Office. The lessons to learn are that a successful economic development depends on rational use of natural resources and on reducing as far as possible the adverse environmental and social impacts of developmental projects
Connected Learning Initiative: A Novel Tool for Teacher Capacity Development in Nigeria
All three tiers of education in Nigeria (primary, secondary, tertiary) lay emphasis on STEM subjects. The methods and strategies employed by STEM teachers in most Nigerian schools have remained teacher-centred and textbook-oriented. This paper has brought together some elements of the innovation achieved in the Connected Learning Initiative (CLIx) to address the identified challenges in STEM education in Nigerian junior secondary schools through the CL4STEM project to build processes for long-term systemic dialogues and networking. CLIx was seeded by the Tata Trusts and led by TISS and MIT, USA, to strengthen secondary STEM learning, pedagogic content knowledge of teachers and their practice at scale in four states in India. The programme’s interactive STEM OERs, subject teacher CoPs on mobile devices, tech design for under-resourced context, participatory and localised ecosystem approach to adoption and scaling, are identified as innovative and scalable models. Data were collected in three phases, baseline, midline, and endline. The findings from interviews indicate that teachers' understanding of CL4STEM innovation seem to improve from baseline to endline.At the baseline 2 teachers were still learning how to effectively navigate CL4STEM modules and Telegram group (CoPs) while none was at the endline. There is an increase in the number of teachers exploring ways of improving CL4STEM teaching strategies through further refinement of the modules and CoP participation and/or alternative ways of achieving better results from 1 at midline to 5 at endline. There is a decrease in the number of teachers that are exploring ways of collaboration with other teachers and educators to help impact student learning using CL4STEM teaching strategies from 11 at the midline to 3 at the endline. Other changes from baseline through midline to endline, generally positively, with respect to perception, voluntariness, relative advantage, compatibility, image, ease of use, research demonstrability, and visibility have been recorded here-in
Neonatal sepsis and mortality in low-income and middle-income countries from a facility-based birth cohort: an international multisite prospective observational study
Background
Neonatal sepsis is a primary cause of neonatal mortality and is an urgent global health concern, especially within low-income and middle-income countries (LMICs), where 99% of global neonatal mortality occurs. The aims of this study were to determine the incidence and associations with neonatal sepsis and all-cause mortality in facility-born neonates in LMICs.
Methods
The Burden of Antibiotic Resistance in Neonates from Developing Societies (BARNARDS) study recruited mothers and their neonates into a prospective observational cohort study across 12 clinical sites from Bangladesh, Ethiopia, India, Pakistan, Nigeria, Rwanda, and South Africa. Data for sepsis-associated factors in the four domains of health care, maternal, birth and neonatal, and living environment were collected for all mothers and neonates enrolled. Primary outcomes were clinically suspected sepsis, laboratory-confirmed sepsis, and all-cause mortality in neonates during the first 60 days of life. Incidence proportion of livebirths for clinically suspected sepsis and laboratory-confirmed sepsis and incidence rate per 1000 neonate-days for all-cause mortality were calculated. Modified Poisson regression was used to investigate factors associated with neonatal sepsis and parametric survival models for factors associated with all-cause mortality.
Findings
Between Nov 12, 2015 and Feb 1, 2018, 29 483 mothers and 30 557 neonates were enrolled. The incidence of clinically suspected sepsis was 166·0 (95% CI 97·69–234·24) per 1000 livebirths, laboratory-confirmed sepsis was 46·9 (19·04–74·79) per 1000 livebirths, and all-cause mortality was 0·83 (0·37–2·00) per 1000 neonate-days. Maternal hypertension, previous maternal hospitalisation within 12 months, average or higher monthly household income, ward size (>11 beds), ward type (neonatal), living in a rural environment, preterm birth, perinatal asphyxia, and multiple births were associated with an increased risk of clinically suspected sepsis, laboratory-confirmed sepsis, and all-cause mortality. The majority (881 [72·5%] of 1215) of laboratory-confirmed sepsis cases occurred within the first 3 days of life.
Interpretation
Findings from this study highlight the substantial proportion of neonates who develop neonatal sepsis, and the high mortality rates among neonates with sepsis in LMICs. More efficient and effective identification of neonatal sepsis is needed to target interventions to reduce its incidence and subsequent mortality in LMICs.
Funding
Bill & Melinda Gates Foundation
Effects of antibiotic resistance, drug target attainment, bacterial pathogenicity and virulence, and antibiotic access and affordability on outcomes in neonatal sepsis: an international microbiology and drug evaluation prospective substudy (BARNARDS)
Background
Sepsis is a major contributor to neonatal mortality, particularly in low-income and middle-income countries (LMICs). WHO advocates ampicillin–gentamicin as first-line therapy for the management of neonatal sepsis. In the BARNARDS observational cohort study of neonatal sepsis and antimicrobial resistance in LMICs, common sepsis pathogens were characterised via whole genome sequencing (WGS) and antimicrobial resistance profiles. In this substudy of BARNARDS, we aimed to assess the use and efficacy of empirical antibiotic therapies commonly used in LMICs for neonatal sepsis.
Methods
In BARNARDS, consenting mother–neonates aged 0–60 days dyads were enrolled on delivery or neonatal presentation with suspected sepsis at 12 BARNARDS clinical sites in Bangladesh, Ethiopia, India, Pakistan, Nigeria, Rwanda, and South Africa. Stillborn babies were excluded from the study. Blood samples were collected from neonates presenting with clinical signs of sepsis, and WGS and minimum inhibitory concentrations for antibiotic treatment were determined for bacterial isolates from culture-confirmed sepsis. Neonatal outcome data were collected following enrolment until 60 days of life. Antibiotic usage and neonatal outcome data were assessed. Survival analyses were adjusted to take into account potential clinical confounding variables related to the birth and pathogen. Additionally, resistance profiles, pharmacokinetic–pharmacodynamic probability of target attainment, and frequency of resistance (ie, resistance defined by in-vitro growth of isolates when challenged by antibiotics) were assessed. Questionnaires on health structures and antibiotic costs evaluated accessibility and affordability.
Findings
Between Nov 12, 2015, and Feb 1, 2018, 36 285 neonates were enrolled into the main BARNARDS study, of whom 9874 had clinically diagnosed sepsis and 5749 had available antibiotic data. The four most commonly prescribed antibiotic combinations given to 4451 neonates (77·42%) of 5749 were ampicillin–gentamicin, ceftazidime–amikacin, piperacillin–tazobactam–amikacin, and amoxicillin clavulanate–amikacin. This dataset assessed 476 prescriptions for 442 neonates treated with one of these antibiotic combinations with WGS data (all BARNARDS countries were represented in this subset except India). Multiple pathogens were isolated, totalling 457 isolates. Reported mortality was lower for neonates treated with ceftazidime–amikacin than for neonates treated with ampicillin–gentamicin (hazard ratio [adjusted for clinical variables considered potential confounders to outcomes] 0·32, 95% CI 0·14–0·72; p=0·0060). Of 390 Gram-negative isolates, 379 (97·2%) were resistant to ampicillin and 274 (70·3%) were resistant to gentamicin. Susceptibility of Gram-negative isolates to at least one antibiotic in a treatment combination was noted in 111 (28·5%) to ampicillin–gentamicin; 286 (73·3%) to amoxicillin clavulanate–amikacin; 301 (77·2%) to ceftazidime–amikacin; and 312 (80·0%) to piperacillin–tazobactam–amikacin. A probability of target attainment of 80% or more was noted in 26 neonates (33·7% [SD 0·59]) of 78 with ampicillin–gentamicin; 15 (68·0% [3·84]) of 27 with amoxicillin clavulanate–amikacin; 93 (92·7% [0·24]) of 109 with ceftazidime–amikacin; and 70 (85·3% [0·47]) of 76 with piperacillin–tazobactam–amikacin. However, antibiotic and country effects could not be distinguished. Frequency of resistance was recorded most frequently with fosfomycin (in 78 isolates [68·4%] of 114), followed by colistin (55 isolates [57·3%] of 96), and gentamicin (62 isolates [53·0%] of 117). Sites in six of the seven countries (excluding South Africa) stated that the cost of antibiotics would influence treatment of neonatal sepsis
Correlates of human papillomavirus vaccine knowledge and acceptability among medical and allied health students in Northern Nigeria
Prior to its planned introduction, we investigated predictors of baseline knowledge and acceptability of HPV vaccination among medical and allied health care students in Kano, northern Nigeria. A total of 410 medical, dental and allied health students completed structured validated questionnaires. Knowledge scores and acceptability of HPV vaccine were determined and adjusted odds ratios (AOR) for predictors of HPV knowledge and acceptability were derived from multivariate logistic regression models. Overall, 3.7% (n = 15), 30.7% (n = 126) and 65.6% (n = 269) of respondents had good, moderate, and poor knowledge of HPV, respectively. The majority 334 (81.5%) were willing to accept the HPV vaccine, but only 18 (4.4%) had received at least one dose of the vaccine. Knowledge of HPV was better among females, younger (<20 years) medical students, students at higher levels of study, sexually experienced students, and condom users. HPV vaccine acceptance was higher among female students in the faculty of allied health with a family history of cervical cancer and good or moderate knowledge of HPV. In conclusion, most students were willing to receive HPV vaccination, despite their sub-optimal level of knowledge and low vaccine uptake. We recommend piloting the HPV vaccine in health colleges and recruiting early adopters as peer educators and advocates.IMPACT STATEMENT What is already known on this subject? Human Papilloma Virus (HPV) vaccine has been introduced in over 80 countries in the past decade, but evidence suggests low awareness of HPV infection and the vaccine, especially in developing countries. Nigeria proposes to introduce the HPV vaccine as part of the routine immunisation program in early 2021. What do the results of this study add? The majority of medical and allied health students in Kano, Nigeria, were willing to receive HPV vaccination, despite their sub-optimal level of knowledge and low vaccine uptake. Vaccine acceptance was predicted by the respondent’s sex, course of study, family history of cervical cancer and knowledge of HPV. What are the implications of these findings for clinical practice and/or further research? The findings could inform program implementation and evaluation as HPV vaccine uptake is scaled up across Africa
Determinants of Infant Feeding Practices among Working and Non-working Mothers in Kano, Nigeria
Background: Growth during the first year of life is greater than at any other time after birth. Good nutrition during this period of rapid growth is vital to ensure that infant develops both physically and mentally to the fullest potential.Objectives: This study assessed determinants of feeding practices among working class and non-working class mothers in Kano, Nigeria.Methodology: Using a comparative cross-sectional study design, interviewer-administered questionnaire was used to collect information from 310 mothers (155 in each group) with their infants' aged 0 – 12 months.Results: Working mothers had a significantly higher level of knowledge of the recommended infant and young child feeding practices (t=4.69, p <0.001) and overall practice performance score was significantly higher among the working group (t= 3.44 p= 0.001). Up to 94.5% working mothers had good knowledge of recommended infant feeding practices compared to 74.0 % of non-working mothers(p=0.001). Haven lost a child, currently being married and vaginal delivery were determinants of appropriate feeding practices among working mothers, while formal education, having five or more children and receiving infant feeding advice were determinants among non-working women.Conclusion: The study found a good knowledge of infant feeding practices among working mothers as compared to the non-working mothers and it also revealed a gap between knowledge and practice of adequate breastfeeding. Context specific health education messages should target both working and non-working class mothers so as to promote, protect and support infant and young child feeding practices in Kano, Nigeria.Keywords: Infant, feeding practices, mothers, breast-feeding, Kan
Knowledge, risk perception and uptake of COVID-19 vaccination among internally displaced persons in complex humanitarian emergency setting, Northeast Nigeria
Abstract Background Owing to crowded and unsanitary conditions, internally displaced persons (IDPs) have an increased risk of COVID-19 infection. Adoption of COVID-19 preventive measures among this population is premised on accurate information, adequate knowledge, and risk perception. We assessed COVID-19 knowledge and risk perception and investigated the association between risk perception and COVID-19 preventive measures, including vaccination among IDPs in Northeast Nigeria. Methods We conducted a cross-sectional study during July–December 2022 and sampled 2,175 IDPs using stratified sampling. We utilized a 12-point assessment tool to evaluate COVID-19 knowledge. Participants who scored ≥ 6 points were considered to have adequate knowledge. We used a 30-item Risk Behavior Diagnosis Scale to assess COVID-19 risk perception and evaluated each item on a 5-point Likert scale. Participants were divided into risk perception categories by the median of Likert scale scores. We performed weighted logistic regression analysis to identify factors associated with risk perception. Pearson’s chi-squared with Rao-Scott adjustment was used to determine the relationship between risk perception and COVID-19 preventive measures. Results Of 2,175 participants, 55.7% were 18–39 years old, 70.9% were females, and 81.7% had no formal education. Among the IDPs, 32.0% (95% CI: 28.8 – 35.0) were considered to have adequate COVID-19 knowledge, and 51.3% (95% CI: 47.8 – 54.8) perceived COVID-19 risk as high. Moreover, 46.3% (95% CI: 42.8 – 50.0) had received one dose of COVID-19 vaccine, and 33.1% (95% CI: 29.8 – 36.0) received two doses. Adequate knowledge (Adjusted Odds Ratio (AOR) = 2.10, [95% CI: 1.46 – 3.03]) and post-primary education (AOR = 3.20, [95% CI: 1.59 – 6.46]) were associated with risk perception. Furthermore, high risk perception was significantly associated with wearing face masks (χ2 = 106.32, p-value < .001), practicing hand hygiene (χ2 = 162.24, p-value < .001), physical distancing (χ2 = 60.84, p-value < .001) and vaccination uptake (χ2 = 46.85, p-value < .001). Conclusions This study revealed gaps in COVID-19 knowledge, risk perception, and vaccination uptake but demonstrated a significant relationship between risk perception and COVID-19 preventive practices. Health education and risk communication should be intensified to improve knowledge, elicit stronger risk perception, and enhance COVID-19 preventive practices