Public Health Issue Research Articles

Stakeholder perspectives on supplemental milk for infants under six months with growth faltering

Abstract Background Growth faltering is a significant public health issue among infants aged <6 months (m). Supplemental milk is commonly used for infants with growth faltering, with variations in type and duration. We synthesized qualitative evidence on stakeholder perspectives about equity, feasibility, and acceptability of the type and duration of supplemental milk for infants aged <6m with growth faltering. Methods We conducted a comprehensive search of six electronic databases in addition to manual searches to identify all qualitative studies published during January 2000-June 2022. Identified articles were screened in two stages against an inclusion criteria with titles and abstract screened first followed by full-text screening. Included studies were quality appraised using the Critical Appraisal Skills Programme checklist. The primary outcome was equity, feasibility, and acceptability of various supplemental milk for infants <6mwith growth faltering. Results Eighteen studies, reporting perspectives of mothers, fathers, grandmothers and healthcare providers were included. Studies were conducted in North America (9), Africa (5) and Asia (3) and South Australia (1). Donor human milk (DHM) (13) and infant formula(9) were the main supplementary milk reported followed by cow/goat milk (2). Key sub-themes derived were: education/awareness, socio-economic status (SES), race and religion, practicality, availability of resources, sustainability, cost, affective attitude, perceived effectiveness and ethicality. Maternal/caregiver SES was a key sub-theme across all three supplemental milk feeds, acting either as a barrier or facilitator for uptake. Conclusions DHM and infant formula were the most commonly reported supplemental feed for infants aged <6m with growth faltering. Maternal/care giver factors were perceived as key to ensure equity, feasibility, and acceptability with respect to type and duration of supplemental milk for infants aged <6m with growth faltering. Key messages • Stakeholders perceived donor human milk and infant formula as main supplemental milk for infants aged <6 months with growth faltering. • Maternal/care giver factors are key to ensure equity, feasibility, and acceptability of supplemental milk for infants aged <6 months with growth faltering.

Declining trends of overweight and obesity in 4-year-olds during 2007-2022 in Northern Sweden

Abstract Background Overweight among preschool children is a huge public health issue. The prevalence of both childhood overweight and obesity increased during the COVID-19-pandemic. Our aim was to study the development of overweight and obesity among 4-year-olds in Västerbotten, Sweden, from 2007 until 2022 with special focus on the COVID-19-pandemic and the year after. Methods This is a repeated cross-sectional study that utilized individual data from most 4-year-old children living in Västerbotten County, Sweden in 2007-2022, implying that the children were born 2003-2108. We included encrypted and anonymized individual anthropometrical data from the routine 4-year-old Child Health Care visit. There were 47 004 4-year-old children living in the county and we included data from 42 584 children, 21 966 boys and 20 618 girls at the age of 46-51 months. Results Overweight and obesity decreased over the study period. In 2007 the prevalence of overweight was 13.4% for boys and 14.9% for girls and obesity 3.7% for boys and 2.7% for girls. In 2022 the prevalence of overweight had declined to 9.5% for boys and 12.1% for girls and the prevalence of obesity to 1.8% and 2.1%, respectively. During the COVID-19-pandemic the prevalence of overweight and obesity for both boys and girls increased and then rapidly returned to the pre-pandemic level in 2022. Conclusions In a setting with free standardized Child Health Care, we present a clear decline in the prevalence of overweight and obesity among Swedish preschool children over time. As in other settings the prevalence of overweight and obesity increased during the COVID-19-pandemic, but we also report a rapid decline in overweight and obesity after the pandemic. It is essential to understand the underlying mechanisms responsible for this favorable trend. Key messages • We present clear decline in the prevalence of overweight and obesity in preschool children over time in a setting with free standardized Child Health Care. • It is important to understand the possible mechanisms of the favorable trend of decrease of the prevalence of overweight and obesity in children pre- and post-pandemic.

Association Between Serum C-Reactive Protein (CRP) And D-Dimer Levels In Covid-19 Patients In A Tertiary Level Hospital, Khulna

Background: The novel corona virus disease 2019 (COVID-19) is major public health issue. It is the most significant global health challenge in the world. Biomarkers play a significant role to detect the severity of COVID-19 infection in the perspective of management of the patients. Aim and objective: We aimed to assess the association between the levels of C-Reactive Protein and D-dimer in COVID-19 patients. Methods: This cross-sectional study was conducted in the department of Pathology and department of Microbiology GMCH, Khulna. 152 patients with SARS-CoV-2 (COVID -19) positive patients were enrolled in this study. C-reactive protein and D-dimer levels are measured in the laboratory of Pathology department, GMCH, Khulna. All statistical computations were performed by using window-based computer software devised with Statistical Packages for Social Sciences (IBM SPSS Statistics 21 version). Results: In this study CRP level was found of mean value of 62.84± 44.64 mg/L with a range of 1.40-195.20 mg/L. It was normal in 21 (13.8%) patients and increased in in 131 patients (86.2 %). The mean value of D-dimer was 2.48 ± 02.20 mg/L with a range of 0.10-9.35 mg/L. D-dimer was normal in 26 (17.1%) patients, whereas it was increased in 126 patients (82.9 %). We performed Pearson’s correlation-coefficient (r) test to compare the association between the levels of CRP with D-dimer in COVID-19 positive patients. There was moderately positive and significant correlation (r = +0.647, p <0.05) between the levels of CRP and D-dimer. Conclusion: There was statistically significant correlation between the levels of serum CRP with D-dimer in COVID-19 positive patients. These two biomarkers can be used to assess the severity in patients with COVID-19 positive with thrombotic disorder for reduction of morbidity and mortality of COVID positive patients. J Dhaka Med Coll. 2023; 32(1) : 57-62

Type, Complications and Treatment of Abortion in a Tertiary Hospital

Background: Abortion remains a critical public health issue, particularly in low-resource settings like Bangladesh, where access to safe abortion services is often restricted. This study aimed to analyze the types of abortions, treatment methods, and post-abortion complications in a tertiary hospital in Bangladesh. Methods: A cross-sectional study was conducted from January to December 2017, including 100 cases of abortion at a 250-bed district hospital in Joypurhat, Bangladesh. Data were collected from patient records, focusing on demographic characteristics, type and nature of abortion, treatment methods, and complications. Descriptive statistics were used for analysis. Results: The majority of patients (42%) were aged 26–30 years, and 58% were primigravida. Most abortions (75%) occurred before 13 weeks of gestation, with incomplete abortions accounting for 86% of cases. Spontaneous abortions constituted 86%, and D&C was the primary treatment method in 83% of cases. Post-abortion complications were infrequent, with incomplete D&C (8%), shock (6%), and septicemia (3%) being the most common. Conclusion: Incomplete abortions and spontaneous abortions are the most common types observed, with D&C being the predominant treatment method. Although complications were low, the findings underscore the need for better access to safe abortion methods, including medical abortion, and the reduction of unsafe practices through improved healthcare education and policy reform.

Genetic inference and single cell expression analysis of potential targets in heart failure and breast cancer

BackgroundBreast cancer and heart failure are major public health issues globally, characterized by significant genetic heterogeneity and complex molecular mechanisms. This study aims to explore potential genetic targets in heart failure and breast cancer through combining genetic inference and single-cell expression analysis, and to assess the causal relationships of these targets using Mendelian randomization methods.MethodsWe first identified genetic variants associated with heart failure and breast cancer using genome-wide association study (GWAS) data. Subsequently, we analyzed the expression patterns of these genetic variants in different cell types through single-cell RNA sequencing technology. Furthermore, we utilized in vitro experiment to assess the effects of ITM2B on MCF7 using immunofluorescence.ResultsOur study identified multiple genetic variants associated with heart failure and breast cancer, showing specific expression patterns in heart and breast cells. The ITM2B gene is highly expressed in breast cancer. ITM2B shows the highest expression in T cells and the lowest expression in proliferating cells. Silencing the ITM2B gene can promote apoptosis and inhibit proliferation and migration of MCF7 breast cancer cells.ConclusionBy integrating genetic inference and single-cell expression analysis, this study revealed potential genetic targets in heart failure and breast cancer, and validated the causal effects of these targets using Mendelian randomization methods.

Drowning Prevention should be a Public Health Issue in Nepal

Nepal is prone to a range of natural disasters; earthquakes being the most widely recognised one. However, many people are at risk of drowning as the floodings in the autumn of 2024 showed, but this is not recognised enough as a serious public health risk in Nepal. Drowning relates to everyday activities such as bathing and swimming and should be treated as a social and public health problem. The United Nations, particularly the World Health Assembly, has called its member states for accelerating action on drowning prevention. This mini review paper considered literature covering drowning in children in Nepal and Bangladesh over the past decade. It outlines some of the key drowning risks and the need for active prevention with reference to some tested drowning prevention interventions in neighbouring countries in South Asia. Many of such interventions have been designed and implemented in Bangladesh, a densely populated countries with a load of water. It has one of the highest rates of drowning, especially among children in the world. Next, the paper highlights some on-going research in this field, especially our newly started research project in Bangladesh, which is aimed at the prevention of drowning in children under two. Finally, the paper concludes with some of the lessons Nepal can learn in this area from its neighbours.

Recent Update on Nanoparticles Based Approaches for Management of Cancer: Wave from Traditional to Advanced Technology.

Cancer is the second most common cause of death worldwide and one of the biggest public health issues arising day by day. Cancer treatment has experienced significant progres-sions in recent years, as emerging technologies have provided innovative strategies to combat this intricate ailment. Among these developments, nanotechnology has shown itself to be a po-tentially useful tool in the fight against cancer. In the last few years, there have been several re-searches performed in the field of nanoparticles because of their several advantages as compared to conventional drug delivery using nanoparticles along with updating technologies like artificial intelligence (AI). The use of nanoparticles decreases the chance of undesirable side effects and shows its action on the targeted site with the help of designed carriers.AI based nanoparticles can't only be used for achieving the targeted site of action but can also help us in advanced im-aging, drug release and optimizing the drug delivery in a more customized way, which opens the door of a new era for tailored made medicine.

Opportunities to advance cervical cancer prevention and care

Cervical cancer (CaCx) is a major public health issue, with over 600,000 women diagnosed annually. CaCx kills someone every 90 s, mostly in low- and middle-income countries. There are effective yet imperfect mechanisms to prevent CaCx. Since human papillomavirus (HPV) infections cause most CaCx, they can be prevented by vaccination. Screening methodologies can identify premalignant lesions and allow interventions before a CaCx develops. However, these tools are less feasible in resource-poor environments. Additionally, current screening modalities cannot triage lesions based on their relative risk of progression, which results in overtreatment. CaCx care relies heavily on genotoxic agents that cause severe side effects. This review discusses ways that recent technological advancements could be leveraged to improve CaCx care and prevention.

Different risk and protective factors predict change of planning ability in middle versus older age

Age-related cognitive decline has become an increasingly relevant public health issue. However, risk and protective factors of cognitive decline have yet to be investigated prospectively taking into account genetic, lifestyle, physical and mental health factors. Population-based data from middle-aged (40 to 59 years; N = 2,764) and older individuals (60 to 80 years; N = 1,254) were drawn from a prospective community cohort study using the Tower of London (TOL) planning task. Assessments were repeated at a 5-year interval to investigate age-related changes in planning performance and to determine the impact of risk and protective factors. Planning performance improved in middle-aged, but declined in older participants over 5 years. SNPs affecting the dopamine system (COMT, DRD2) and APOE polymorphisms differentially predicted cognitive performance in older vs. middle-aged individuals. For older individuals, high alcohol consumption, antidepressant medication and living without a partner had additional negative predictive power on cognition. In contrast, undiagnosed hypertension, no obstructive lung disease, and fewer years of education predicted cognitive decline in the middle-aged group. The results inform screening for individuals particularly vulnerable to cognitive decline and interventions (e.g., focusing on lifestyle factors) to help maintain cognitive performance into old age.

Clinico-demographic profile of burns in the Middle-East and North-Africa (MENA) region: a systematic review and meta-analysis

Burn injuries remain a public health issue with risk of mortality and multiple post-burn morbidities. This article aims to systematically review and meta-analyse data about burns in the Middle-East and North-Africa (MENA) region. Methods Pubmed, Web of Science, Scopus, Global Index Medicus, Cochrane Library and Google scholar data were searched from their dates of inception till April 2024. Results One hundred and one studies were included in this review, representing data from twelve countries in the region. Data was sub-grouped into two groups: pediatric group and emergency room (ER) group. The pooled random-effect estimates were male gender 58.6% [95% CI 56.9–60.2%], accidental injury 91.1% [95% CI 85.9–94.5%], scald burn 50% [95% CI 46.7–53.4%], at home injury 79.9% [95% CI 76.7–82.8%], upper limbs involvement 51.7% [95% CI 46.8–56.6%], mean body surface area burned (BSAB) 17.2% [95% CI 14.69–19.84%], second-degree burns 56.5% [95% CI 49–63.8%], length of stay 11.18 days [95% CI 9.68–12.68%] and mortality rate 9.1% [95% CI 7.5–11%]. All included studies were of good quality. Conclusion This review shows scarcity of studies from many countries in the MENA region. These data will inform policy makers and burn specialists about the extent of this public issue in the region.

Diagnosis and Classification of Pediatric Epilepsy in Sub-Saharan Africa: A Comprehensive Review.

Background/Objectives: Epilepsy is a major public health issue in Sub-Saharan Africa, particularly among children, due to limited healthcare resources, socioeconomic inequalities, and cultural stigma that often result in underdiagnosis and undertreatment. This review examines pediatric epilepsy's diagnosis, classification, and management in this setting, highlighting the need for culturally appropriate interventions to improve care quality and address these challenges. Methods: A review of the literature was conducted using MEDLINE, Embase, Scopus, and Web of Science databases to identify pertinent studies published between 2013 and 2024. This review included studies examining the epidemiology, seizure classification and etiologies of epilepsy among children in Sub-Saharan Africa. Results: This review revealed higher incidence and prevalence of epilepsy in Sub-Saharan Africa compared to high-income countries, primarily attributable to factors such as infectious diseases, perinatal injuries, and limited diagnostic resources. The most frequently reported types of epilepsy were generalized and focal seizures, with significant etiological contributions from structural and infectious causes, including nodding syndrome and HIV-related epilepsy. The treatment gap remains considerable, with up to 80% of children not receiving appropriate antiseizure medications. Conclusions: The diagnosis and treatment of epilepsy in pediatric populations in Sub-Saharan Africa is complicated by several factors, including cultural stigma and the lack of adequate healthcare infrastructure. There is an urgent need for culturally tailored diagnostic tools, improved access to affordable treatments, and public health initiatives aimed at reducing stigma. Addressing these gaps through enhanced research, improved healthcare access, and targeted educational campaigns is crucial for improving the quality of life for children with epilepsy.

Using EMS data to explore community-level factors associated with firearm violence in North Carolina

BackgroundFirearm violence is a significant public health issue. However, it is unclear if there is an association between the Social Vulnerability Index (SVI) and the intent of both fatal and nonfatal firearm injuries, and if these associations are modified by community race and ethnic composition. This study examines the association between community-level social vulnerability and firearm injury incidence in North Carolina (NC) using 2021–2022 emergency medical services (EMS) data. Additionally, it investigates how these associations vary by the intent of injury (assault, self-inflicted, and unintentional), and whether they are modified by community racial/ethnic composition.MethodsThis cross-sectional study utilized NC EMS data, capturing firearm incidents from January 1, 2021, to December 31, 2022. The SVI from the Centers for Disease Control and Prevention (CDC) was used to assess community-level vulnerability. The SVI’s racial/ethnic minority status component was removed for stratification analysis. Firearm injury rates were calculated per 100,000 population, and negative binomial regression models were used to estimate Incidence Rate Ratios (IRRs) for different SVI levels and intents of firearm injuries.ResultsDuring the study period, we identified 7,250 EMS encounters at non-healthcare locations related to firearm injuries, encompassing 2,648 NC census tracts. Assault was the leading cause of firearm injuries (n = 3,799), followed by self-inflicted (n = 1,498), and unintentional injuries (n = 722). High-SVI communities had significantly higher rates of firearm injuries compared to low-SVI communities, particularly for assault-related injuries. When the minority status component was excluded from SVI, racial/ethnic minority status emerged as a significant modifier, with higher rates of firearm injuries being observed in communities with larger racial/ethnic minority populations.ConclusionCommunity-level social vulnerability is significantly associated with firearm injury incidence, with the effect being more pronounced in racial/ethnic minority communities. These findings underscore the need for targeted public health interventions that address underlying social determinants of health (e.g., access to education) to reduce firearm violence. Future research should further explore the intersection of social vulnerability and racial/ethnic composition to develop effective prevention strategies.

Trends in Medicare Utilization and Reimbursement for Traumatic Brain Injury: 2003–2021

Traumatic brain injury (TBI) is a significant public health issue among Medicare beneficiaries, with many specialties reporting consistent annual decreases in utilization and reimbursement. This study investigates the trends in Medicare utilization and rates of reimbursement for neurosurgical procedures related to TBI from 2003 to 2021, aiming to provide insights into the economic aspects of TBI care. Utilizing the Medicare Part B National Summary Data files, we analyzed 14 neurosurgical procedures over the 18-year period, assessing the changes in procedural volume and mean reimbursement per procedure, adjusted for inflation to the 2021 USD using the Consumer Price Index. From 2003 to 2021, TBI-related neurosurgical interventions showed a total percent change of −15.39% in procedural volume and −3.11% in inflation-adjusted mean reimbursement per procedure. Linear regression analyses indicated a significant downward trend in the overall procedural volume (p < 0.001) but no significant trend in the inflation-adjusted mean reimbursement rates (p = 0.585). Subgroup analyses did not reveal significant changes in the reimbursement rates for decompressive craniotomy/craniectomy, cranioplasty, intracranial pressure management, and traumatic fracture/penetration procedures. Our study indicates a significant decrease in neurosurgical TBI procedural volumes, while reimbursement rates remained stable when adjusted for inflation, highlighting the need for policy adjustments to ensure adequate resources for TBI care.

Wheat bran oil ameliorates high-fat diet-induced obesity in rats with alterations in gut microbiota and liver metabolite profile

BackgroundObesity is one of the public health issues that seriously threatens human health. This study aimed to investigate the effects of wheat bran oil (WBO) on body weight and fat/lipid accumulation in high-fat diet (HFD)-induced obese rats and further explore the possible mechanisms by microbiome and metabolome analyses.MethodsFifty Sprague-Dawley (SD) rats were fed either a normal chow diet (B group, n = 10) or HFD (n = 40) for 14 weeks to establish an obesity model. The HFD-induced obese rats were further divided into four groups and given WBO at 0 mL/kg (M group), 1.25 mL/kg (WBO-L group), 2.5 mL/kg (WBO-M group), and 5 mL/kg (WBO-H group) by oral gavage for 9 weeks. The body weight of rats was weighed weekly. The gut microbiota structure was analyzed using 16 S rDNA high-throughput sequencing. The liver metabolite profile was determined using UHPLC-QE-MS non-target metabolomics technology.ResultsIn this study, WBO treatment reduced body weight gain, fat and lipid accumulation, and ameliorated hepatic steatosis and inflammation. WBO treatment increased the relative abundance of Romboutsia and Allobaculum and decreased that of Candidatus_Saccharimonas, Alloprevotella, Rikenellaceae_RC9_gut_group, Alistipes, Parabacteroides, UCG-005, Helicobacter, Colidextribacter, and Parasutterella compared with the M group. A total of 22 liver metabolites were significantly altered by WBO treatment, which were mainly involved in taurine and hypotaurine metabolism, nicotinate and nicotunamide metabolism, phenylalanine, tyrosine and tryptophan biosynthesis, phenylalanine metabolism, and ether lipid metabolism.ConclusionsWBO alleviated body weight gain and fat/lipid accumulation in HFD-induced obese rats, which may be related to altered gut microbiota and liver metabolites.

Implementing LEARN: Comprehensive Suicide Prevention Training for High School Students, Parents, and School Personnel.

Adolescent suicide is a public health issue, and school is an ideal setting for prevention activities. LEARN is a peer-led gatekeeper training for high school personnel, parents, and students. The purpose of this study was to evaluate the effectiveness of LEARN as a gatekeeper training. Paired t tests were used to compare pre- and post-training surveys for 4983 LEARN participants. Participants reported an increased likelihood of engaging in each LEARN step: looking for signs, empathizing and listening, asking about suicide thoughts and plans, reducing danger, and connecting the person with help. Most participants were highly satisfied with the peer trainer's delivery of content. LEARN gatekeeper training was successfully implemented in high schools with students, parents, and school personnel. All groups reported increases in likelihood of approaching and providing support and connections for at-risk individuals and rated the trainer as effective, indicating satisfaction with the peer-led training format.

Co-developing frameworks towards environmentally directed pharmaceutical prescribing in Scotland – A mixed methods study

The presence of human pharmaceuticals in the aquatic environment is recognised internationally as an important public health and environmental issue. In Scotland, healthcare sustainability targets call for improvements to medicine prescribing and use to reduce healthcare's impact on the environment. This proof-of-concept study aimed to develop a framework on the environmental impact of pharmaceuticals to use as a knowledge support tool for healthcare professionals, focussing on pharmaceutical pollution. Nominal Group Technique was applied to achieve consensus on pharmaceuticals and modelling factors for the framework, working with a panel of cross-sector stakeholders. Bayesian Belief Network modelling was applied to predict the environmental impact (calculated from hazard and exposure factors) of selected pharmaceuticals, with Scotland-wide mapping for visualisation in freshwater catchments. The model calculated the pollution risk score of the individual pharmaceuticals, using the ratio of prescribed mass vs. mass that would not exceed the predicted no-effect concentration in the freshwater environment. The pharmaceuticals exhibited different risk patterns, and spatial variation of risk was evident (generally related to population density), with the most catchments predicted to exceed the pollution risk score for clarithromycin (probability >80 % in 35 of 40 modelled catchments). Simulated risk scores were compared against observed risk calculated as the ratio of measured environmental concentrations from national regulatory and research monitoring and predicted no-effect concentrations. The model generally overpredicted risk, likely due to missing factors (e.g. solid-phase sorption, temporal variation), low spatial resolution, and low temporal resolution of the monitoring data. This work demonstrates a novel, trans-disciplinary approach to develop tools aiding collation and integration of environmental information into healthcare decision-making, through application of public health, environmental science, and health services research methods. Future work will refine the framework with additional clinical and environmental factors to improve model performance, and develop electronic interfaces to communicate environmental information to healthcare professionals.

Lactobacillus rhamnosus RL-H3-005 and Pediococcus acidilactici RP-H3-006 ameliorate atopic dermatitis in offspring mice by modulating the gut microbiota

The increasing incidence of atopic dermatitis (AD) presents a public health issue, and thus there is an urgent need for safe and effective preventive strategies. In this study, a strategy to reduce the risk of AD in offspring by administering probiotics to the mother was explored. Female mice were given Lactobacillus rhamnosus RL-H3-005 (RL) and Pediococcus acidilactici RP-H3-006 (RP) during pregnancy and lactation period, and their inhibition effects on AD symptoms in offspring mice were evaluated. The results showed that supplementation with RL and RP during pregnancy and lactation period altered not only the gut microbiota community but also microbial community in milk in pregnant mice. Further study showed that pups from RL- and RP-treated pregnant mice had mild symptoms of AD, characterized by reduced epidermal thickness in the ear tissues and numbers of mast cells, which was associated with the reduction in secretory immunoglobulin A (sIgA), immunoglobulin E (IgE), IL-4, IL-5, IL-13, thymic stromal lymphopoietin (TSLP), and eosinophil cationic protein (Ecp). The underlying mechanism of RL and RP on the inhibition of AD symptom in offspring was closely associated with the alterations of the gut microbiota community in offspring, including an increase in Ligilactobacillus and Bacteroides. This study implies that RL and RP hold the potential to reduce the risk of AD in offspring via gut-mammary axis during the pregnancy and lactation period.

Synthesis of Highly Porous Graphene Oxide-PEI Foams for Enhanced Sound Absorption in High-Frequency Regime.

High-frequency noise exceeding 1 kHz has emerged as a pressing public health issue in industrial and occupational settings. In response to this challenge, the present study explores the development of a graphene oxide-polyethyleneimine (GO-PEI) foam (GPF) featuring a hierarchically porous structure. The synthesis and optimization of GPF were carried out using a range of analytical techniques, including Raman spectroscopy, scanning electron microscopy (SEM), Braunauer-Emmett-Teller (BET) analysis, X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FT-IR). To evaluate its acoustic properties, GPF was subjected to sound absorption tests over the 1000-6400 Hz frequency range, where it was benchmarked against conventional melamine foam. The findings demonstrated that GPF with a GO-to-PEI composition ratio of 1:3 exhibited enhanced sound absorption performance, with improvements ranging from 15.0% to 118%, and achieved a peak absorption coefficient of 0.97. Additionally, we applied the Johnson-Champoux-Allard (JCA) model to further characterize the foam's acoustic behavior, capturing key parameters such as porosity, flow resistivity, and viscous/thermal losses. The JCA model exhibited a superior fit to the experimental data compared to traditional models, providing a more accurate prediction of the foam's complex microstructure and sound absorption properties. These findings underscore GPF's promise as an efficient solution for mitigating high-frequency noise in industrial and environmental applications.

SIRT3, a New Hope in Liver Diseases from Pathogenic Mechanisms to Therapeutic Strategies.

The liver, the largest internal organ in the human body, regulates multiple reactions and processes, including detoxification, regeneration, and immune defense. Liver diseases have emerged as a significant global public health issue. Numerous studies have indicated that the mitochondrial deacetylase SIRT3 has played various roles in the pathogenesis and pathological progression of liver diseases. Objectives: This review aims to explore the advances in the study of SIRT3 and liver disease and review possible mechanisms. Natural and chemical activators of SIRT3 are also discussed. The role of SIRT3 in the pathogenic mechanisms and therapeutic strategies of liver disease is summarized by reviewing Pubmed. SIRT3 alleviates liver diseases by regulating fatty acid metabolism, mitochondrial function, and immune-inflammatory response. Meanwhile, Withaferin A, lipoic acid, major royal jelly proteins, and berberine can activate SIRT3 or upregulate its expression, thereby alleviating liver damage. SIRT3 can effectively slow down the progression of liver disease and protect the liver from further damage. The use of SIRT3 as a pharmacological target for the treatment of liver disease is a potential therapeutic approach.

Effects of Biochar on Arsenic-Contaminated Soil: Chemical Fractionation, Vegetation Growth, and Oral Bioaccessibility.

Contamination by arsenic (As) is a pressing environmental and public health issue requiring urgent remediation strategies. One cost-effective and eco-friendly method involves adding stabilizing agents to soils to reduce As mobility. However, remediation projects must also address potential ecotoxicological effects. These effects may include harmful impacts on both aquatic and terrestrial organisms, including plants, disruption of ecosystem balance, and the potential bioaccumulation of toxic substances in the food chain. Biochar from organic fraction of municipal solid waste (OFMSW) shows promise for As-contaminated soil remediation. Pot experiments were conducted with soil contaminated with As (100 mg kg-1) and amended with biochar produced at three different temperatures (300, 500, and 700 °C) and addition rates (1 and 5%, w/w). Chemical fractionation showed higher As concentration in a less accessible fraction (F4). Biochar amendments did not significantly differ from the control in As immobilization, but enhanced maize (Zea mays) growth and reduced As uptake, with the most promising results seen with 1% of biochar produced at 700 °C. The bioaccumulation factor (BCF) and translocation factor (TF) were both lower than 1, indicating a low absorption of As and minimal translocation from the root to the shoot. The bioaccessible percentage was higher in the samples treated with biochar compared to the control. According to the results, biochar showed no satisfactory potential for As immobilization and its approach of pretreatment/modification should be tested regarding possible improvements in the immobilization performance of As. Since most contaminations involve multiple contaminants simultaneously, it is essential to test the interactions between arsenic and other pollutants to understand the effects of biochar in such complex scenarios, which will be explored in future studies. Graphical abstract.