Susceptible Groups Research Articles

The Time Course of Catecholamine Dose Reduction in Septic Shock as a Predictor of Bacterial Susceptibility to Empiric Antimicrobial Therapy: A Retrospective Observational Study

Background/Objectives: The 28-day mortality rate for septic shock is high, necessitating rapid and effective empiric antimicrobial therapy. In this study, we investigate whether the rate of catecholamine dose reduction in septic shock can indicate bacterial susceptibility to initial antimicrobial therapy or not. Methods: This retrospective observational study involved 108 adult patients with bacteraemia and septic shock admitted to the intensive care unit of Nihon University Itabashi Hospital between January 2017 and December 2023. They were classified into the Susceptible or Resistant groups based on the bacteria’s susceptibility to the initial empiric antimicrobial therapy. Catecholamine dosages were converted to norepinephrine equivalent (NEE) scores, with the time course from the peak to the end of administration measured at NEE reductions. Results: Of the 108 patients, 94 were in the Susceptible group and 14 in the Resistant group. The Susceptible group showed faster reductions in catecholamine doses: the time to reduce the dose from the maximum NEE to 25% was 19 vs. 49.5 h (p = 0.0057), and to 0%, it was 29 vs. 54 h (p = 0.0475). The time to reduce the dose from the maximum NEE to 75% was 8 vs. 12.5 h (p = 0.0733), and to 50% it was 13 vs. 21.5 h (p = 0.1081). Conclusions: In septic shock with bacteraemia, a faster catecholamine dose reduction indicates bacterial susceptibility to the initial empiric antibiotics. This reduction rate can serve as an early clinical indicator of the appropriate initial empiric therapy.

Unequal effects of adolescent health behaviors on adult cardiometabolic conditions: a cohort study

Abstract Background Health behaviors in adolescence could have a life-long effect on cardiometabolic health and differ by parental socioeconomic conditions. Adopting a life course perspective and a causal inference framework, we aimed to quantify the differential effect of adolescent unhealthy behaviors on adult cardiometabolic conditions by parental financial situation. Methods Using the National Longitudinal Study of Adolescent to Adult Health in the United States (n = 3,772), we estimated conditional causal effect by parental financial situation through inverse probability-weighted marginal structural models. Exposures were adolescent health behaviors (dietary habits, cigarette smoking, alcohol consumption and physical activity) and the effect modifier was parental financial situation (difficulty paying bills vs. no difficulty), both measured at ages 12-19 (1994-1995). Outcomes were cardiometabolic conditions (hypertension, stroke, cardiac failure, diabetes, chronic kidney disease), measured at ages 33 - 43 (2016-2018) using biomarkers and self-reports. Results There were 1,206 participants with cardiometabolic conditions after 20 years of follow-up. Alcohol consumption among adolescents with parental financial difficulty led to 325 more cardiometabolic cases (95% confidence interval: 2 - 647) compared to alcohol consumption by their peers without financial difficulty. This differential effect is driven more by cardiovascular conditions (hypertension, stroke, or cardiac failure) than by metabolic conditions (diabetes or chronic kidney disease). There were no differential effects of dietary habits, cigarette smoking and physical inactivity on the occurrence of adult cardiometabolic conditions. Conclusions Public health initiatives targeting alcohol consumption during adolescence could mitigate socioeconomic inequalities in adult cardiometabolic conditions. Key messages • Socioeconomically disadvantaged adolescents are more susceptible to the long-term detrimental health effects of alcohol consumption. • These susceptible groups may need targeted interventions to mitigate the cardiometabolic effect of alcohol consumption.

Outcome of carbapenem or colistin resistant Klebsiella pneumoniae bacteremia in the intensive care unit

Carbapenem-resistant Klebsiella pneumoniae (CRKp) infections continue to be an important cause of mortality. In this retrospective study, the effect of carbapenem or colistin resistance on mortality in Klebsiella pneumoniae bacteremia and combined meropenem + colistin administration in CRKp bacteremia was evaluated. In addition to that, a mathematical model is applied to explore the relationships between the resistance and mortality. A total of 139 adult patients diagnosed with K. pneumoniae bacteremia(73 carbapenem sensitive and 66 carbapenem resistant) between 01/01/2000 and 31/07/2019 were included in the study. The 30-day mortality in entire cohort were 19.4%. 30-day mortality was significantly higher in the carbapenem resistant-colistin sensitive group and in the carbapenem resistant-colistin resistant group compared to the carbapenem susceptible group. Meropenem + colistin combination was administered to 37 (95%) of carbapenem resistant–colistin sensitive (n = 39) and 25 (93%) of carbapenem resistant–colistin resistant patients(n = 27). Notably, mortality was not significantly affected regardless of whether CRKp was colistin sensitive and whether a high dose and prolonged infusion of meropenem was administered. Mortality is higher in carbapenem resistant Klebsiella pneumoniae bacteremia compared to carbapenem susceptible group. In cases of combined meropenem and colistin administration, high dose and prolonged infusion of meropenem is not superior to standard dose and infusion in both carbapenem resistant–colistin sensitive and carbapenem resistant–colistin resistant K. pneumoniae bacteremia.

Trends in overall and abdominal obesity among Korean adults, 2007-2022: an Age-period-cohort analysis

Abstract Overall and abdominal obesity, often defined as having high body mass index (BMI) and waist circumference (WC), are associated with an increased risk of chronic disease. A comprehensive understanding of trends and contributing factors is necessary to reduce the disease burdens. This study investigated the nationwide trends and independent effects of age, period, and birth cohort on BMI and WC in Korean adults. We conducted hierarchical age-period-cohort (cross-classified random-effects models) analyses using measured BMI and WC data from 85,292 Korean adults (aged ≥19) in the Korea National Health and Nutrition Examination Survey 2007-2022. We also examined whether the age, period, and cohort effects varied by socioeconomic subgroups. In 2007-2022, the age-standardized mean BMI (23.6 to 24.2 kg/m2) and WC (81.7 to 83.5 cm) increased in the overall population. An upward trend was evident among men, while only a slight change was observed in women. The mean BMI was highest at age 47 (25.1 kg/m2) in men and age 60 (24.2 kg/m2) in women and it decreased at older ages. Controlling for age and period effects, mean BMI was lowest among the birth cohorts of 1960-1964 (24.15 kg/m2), with the highest mean BMI observed among the birth cohorts of 1919-1939 (24.97 kg/m2) and 1990-2003 (24.99 kg/m2). The mean WC was highest at age 55 (88.0 cm) in men and age 79 (83.4 cm) in women. Similar U-shaped birth cohort effect was observed with WC, with the lowest mean observed among the birth cohorts of 1960-1964 [82.92 (0.30)]. At most age, period, and birth cohorts, mean BMI and WC were consistently higher among adults at lower income and education. The overall period effect was consistently found in all socioeconomic subgroups, but the gap in BMI between income and education subgroups widened over time. Our findings suggest that BMI and WC slightly increased in overall Korean adults in 2007-2022, with some inequalities among age, sex, birth cohort, and socioeconomic subgroups. Key messages • The obesity indices increased from 2007 to 2022, but the cohort effect on BMI and WC showed a U-shaped pattern with the lowest mean among birth cohorts of 1960-1964. • The obesity prevalence is varied by socioeconomic status, suggesting that more intense interventions may be needed to target the susceptible groups.

Benzodiazepines: Predominant Reported Acute Poisoning to Private Sector Tertiary Care Hospitals in Karachi

Background: Acute poisoning is a major medical emergency that translates into morbidity and mortality across all age groups, it is a potentially preventable cause of illness and death. This study was carried out to assess the epidemiological information of acute poisoning among the general population presented to the three campuses of a private tertiary care teaching hospital in Karachi, Pakistan. Method: The cross-sectional study was conducted at three campuses of a private tertiary care teaching hospital, Dr. Ziauddin Hospital in Karachi, comprising of records from January 1, 2018, to December 31, 2022, of patients reporting acute poisoning. These records were accessed after getting approval from the Ethical review committee. Consecutive sampling technique was applied while data was collected. All cases of acute poisoning reporting to the emergency department with complete records were included. While data of those with any other diagnosis or incomplete record were excluded. Descriptive analysis was performed for quantitative variables. For categorical data frequency and percentages were extracted. The chi-square test was used to associate categorical variables. P value less than 0.05 was taken as statistically significant. Results: The total number of cases was n=518 out of which n=235 (45.4%) were males while n=283 (54.6%) were females and the maximum number of cases n=111 (21.4%) were associated with Benzodiazepines followed by insecticide poisoning and ingestion of rodenticides. Conclusions: The most susceptible groups to acute poisoning were found to be women and children. A prevalent agent that caused toxicity was benzodiazepines; the biggest number of cases occurred in April, while the lowest number occurred in December. The year 2020 was linked to the highest number of cases.

A pan-genomic analysis based multi-epitope vaccine development by targeting Stenotrophomonas maltophilia using reverse vaccinology method: an in-silico approach.

Antibiotic resistance in bacteria leads to high mortality rates and healthcare costs, a significant concern for public health. A colonizer of the human respiratory system, Stenotrophomonas maltophilia is frequently associated with hospital-acquired infections in individuals with cystic fibrosis, cancer, and other chronic illnesses. The importance of this study is underscored by its capacity to meet the critical demand for effective preventive strategies against this pathogen, particularly among susceptible groups of cystic fibrosis and those undergoing cancer treatment. In this study, we engineered a multi-epitope vaccine targeting S. maltophilia through genomic analysis, reverse vaccination strategies, and immunoinformatic techniques by examining a total of 81 complete genomes of S. maltophilia strains. Our investigation revealed 1945 core protein-coding genes alongside their corresponding proteomic sequences, with 191 of these genes predicted to exhibit virulence characteristics. Out of the filtered proteins, three best antigenic proteins were selected for epitope prediction while seven epitopes each from CTL, HTL, and B cell were chosen for vaccine development. The vaccine was refined and validated, showing highly antigenic and desirable physicochemical features. Molecular docking assessments revealed stable binding with TLR-4. Molecular dynamic simulation demonstrated stable dynamics with minor alterations. The originality of this investigation is rooted in the thorough techniques aimed at designing a vaccine that directly targets S. maltophilia, a microorganism of considerable clinical relevance that currently lacks an available vaccine. This study not only responds to a pressing public health crisis but also lays the groundwork for subsequent research endeavors focused on the prevention of S. maltophilia outbreaks. Further evidence from studies in mice models is needed to confirm immune protection against S. maltophilia.

Increasing Burden of Antibiotic Resistance in Children Suffering from Septicemia in Tertiary Care Hospitals

Abstract Introduction/Objective Invasion of the bloodstream by microorganisms constitutes one of the most serious situations in infectious disease. Children are the most susceptible groups to contract diseases specifically Blood Stream Infections (BSIs). BSIs have been considered to be the main cause of morbidity and mortality in children. It is associated with a high mortality rate of 20%–50%. The emerging causative agents and resistance to various antimicrobial agents are increasing from time to time. Methods/Case Report The present study was carried out to confirm the causative agents and their antibacterial susceptibility pattern in children with septicemia at Tertiary Care Hospitals, Peshawar, KP, Pakistan. This cross- sectional study involved about 873 pediatric patients (≤ 13 years). BACTEC BD 9050 system was used to identify the causative organism, and sub-cultures were done on MacConkey Agar and Blood Agar. The antibiotic susceptibility test was done using the Kirby Bauer Disk diffusion method as per CLSI guidelines. Results (if a Case Study enter NA) Among 873 study subjects 568 (65.06 %) were males followed by 305 (34.93 %) females. Out of the 873 tested blood samples, blood cultures were positive in 83 (9.51%) followed by 122 (13.98%) skin contaminants, and no growth was observed in 668 (76.51%) cases. The majority 43 (51.80 %) of them were neonates (≤ 28 days). Gram-positive and Gram-negative bacteria constituted 58 (69.87%) and 25 (30.13%), respectively. The most frequent pathogen found was Staphylococcus aureus 54 (65.06 %), followed by Klebsiella spp., E. coli, and Pseudomonas aeruginosa 6 (7.22 %), Salmonella spp. 5 (6.02 %) Enterococcus faecalis 3 (3.61 %), Acinetobacter baumannii 2 (2.40 %) and Staphylococcus epidermidis 1 (1.20 %). In Staphylococcus aureus about 6 (11.11) were MRSA. The majority of bacterial isolates showed high resistance to Ciprofloxacin, Ceftazidime, Cefuroxime, Co-trimoxazole, Cefepime, Cefotaxime, Minocycline, Tobramycin, Cefoxitin and Cephradine that are commonly used in the study area. Conclusion The majority of the isolates were multidrug resistant. These higher percentages of multi-drug resistant emerged isolates urge us to take infection prevention measures and to conduct other large studies for appropriate empiric antibiotic choice.

The impact of social media screen-exposure time on suicidal ideation among Pakistani adolescents.

Adolescence is a crucial life stage for the individual identity formation. The growing employment of social media and screen-exposure among teenagers and the concerning rise in suicide ideation rates in this susceptible group both suggested this study. Thus, we explored the association between adolescents' suicidal ideation and their daily social media screen-exposure. We surveyed 502 students, aged 13 to 19 years old, recruited in colleges and universities of Punjab, Pakistan. The survey was based on a 28-item self-reported questionnaire and demographic data collection. Approximately 40% of adolescents reporting suicidal ideation showed an extended social media screen-exposure, as well as significant depressive feelings and problematic personality traits. In particular, suicidal ideation increased by 0.39 for each one-unit increase in screen-exposure time and levels of depression increased by 0.21 times by unit of screen-exposure. The correlation coefficients further indicated a moderate positive association between depression and suicidal thoughts as well as personality traits played as mediators between social media screen-exposure time and suicidal ideation among adolescents. Our study found a positive association, even if modest, between the use of social media screens and suicidal ideation among adolescents. This evidence may suggest to adopt specific strategies to address the use of media among youths and prevent mental disorders related to the prolonged and inappropriate use of digital technologies in those users with a vulnerable personality.

Screening of drought tolerance indices for selection of resistance wheat (Triticum aestivum L.) landraces under drought stress conditions

Abstract During the cropping season 2016-2017, an experiment was conducted in a split plot design to study the response of 25 wheat genotypes to drought stress under irrigated and minimal irrigation conditions. Different drought tolerance indices for 25 bread wheat (Triticum aestivum L.) genotypes were evaluated. The calculation drought tolerance indices was based on the grain yield of wheat under irrigated and water stress conditions. The result indicated a significant effect of drought stress on the yield of different wheat genotypes based on mean values of different drought tolerance indices. Among the studied different indices, mean productivity (MP), stress tolerance index (STI), and geometric mean productivity (GMP) were more efficient to discriminate between drought sensitive and drought tolerant genotypes based on the calculation of correlation coefficient and multivariate analysis. Twenty-five genotypes were classified into tolerant and susceptible groups through drought tolerance indices using cluster analysis. Among the genotypes, C-306, WH 1236, WH 1235, and GW 477 having higher yields under drought conditions which showing their stability under stress conditions. The most yield stable genotypes under adverse environment were identified by multivariate analysis of drought tolerance indices individually or in combination. From the result, we concluded that GMP, MP and STI are more efficient drought tolerance indices among other indices to identify stable genotypes under stress conditions.

Serosurvey of Leptospira spp. in captive non-human primates in Spain

Leptospirosis is a worldwide zoonotic disease caused by serovars of Leptospira spp. that can infect a wide range of wild and domestic species, highlighting non-human primates (NHPs) as one of the most susceptible taxonomic groups. The aim of the present study was to determine the seroprevalence and potential risk factors associated with exposure to Leptospira spp. in captive NHPs in Spain. Between 2007 and 2021, sera were collected from 258 NHPs in 16 zoos and wildlife rescue centers (WRCs), and tested for antibodies to Leptospira spp. using the modified microagglutination test (MAT). Anti-Leptospira spp. antibodies were detected in 73 (28.3 %) of the 258 NHPs evaluated. Seropositivity was found in 61.0 % (25/41) of the species analyzed and in 87.5 % (14/16) of the sampled centers. Sera seropositive for six different serovars of Leptospira spp. were detected, with L. Grippotyphosa being the most prevalent. Seroprevalence was found to be significantly higher in Hominidae (61.8 %; P < 0.001) compared to other NHP families tested. To the author’s knowledge, the present study is the largest serosurvey of Leptospira spp. conducted in NHPs in Europe and also reports for the first time exposure to Leptospira spp. in nine NHP species, expanding the host range for this zoonotic bacterium. Our results indicate high and widespread seropositivity of Leptospira spp. in NHPs kept in captivity in Spain, which may be of conservation and animal health concern. This study supports the need to include captive NHPs in monitoring programs to evaluate the exposure of these species to Leptospira spp. in captive centers.

Effect of educational intervention based on the theory of planned behavior (TPB) on amount of salt intake in pregnant women with PreHypertension

BackgroundPrehypertension is one of the common disorders during pregnancy. Reducing salt intake is among the best cost-effective interventions to reduce the risk of hypertension. The present study aimed to explore the effect of an educational intervention based on the Theory of Planned Behavior (TPB) on amount of salt consumed by prehypertensive pregnant women.MethodsThe present quasi-experimental study was conducted in 2022 on 61 prehypertensive pregnant women visiting the Comprehensive Health Services Centers in Birjand, Iran. Pregnant women were selected through a convenience sampling method and randomly assigned to intervention and control groups. A blood pressure test and a 24-hour urine test were taken in 3 stages (before, immediately after, and one month after the intervention). A reliable and valid questionnaire based on the TPB was used to measure the cognitive variables. The intervention program included three training sessions based on the TPB held on an online platform (WhatsApp social network). Data were analyzed using repeated measures ANOVA and longitudinal marginal model with the GEE approach in SPSS19. The significance level for all statistical tests was set at p < 0 0.05.ResultsAfter intervention, the mean score of perceived behavioral control (p = 0.02), intention (p = 0.004), and salt consumption behavior (p = 0.03) increased significantly in the intervention group, and the mean score of systolic blood pressure (p < 0.001) and diastolic blood pressure (P < 0.01) decreased significantly in this group. In the control group, a statistically significant difference was observed in the systolic and diastolic blood pressure of the subjects (p < 0.01). However, the score of attitude, subjective norms, perceived behavioral control, intention, salt consumption behavior and the daily salt intake did not show a statistically significant difference over time (P < 0.05).ConclusionThe present findings showed that the perceived behavioral control, intention, behavior, systolic and diastolic blood pressure can be modifiable variables to improve the amount of salt consumed by pre-hypertensive pregnant women. Therefore, we recommend that the present model be used to develop interventions to improve health indicators in pregnant women as a highly susceptible group in society.

Seroprevalence of enterovirus D68 in Yamagata, Japan, between 1976 and 2019.

To clarify the epidemiology of enterovirus D68 (EV-D68), an enterovirus rarely identified in the 20th century, we performed seroepidemiological analysis against EV-D68 using sera collected in 1976, 1985, 1990, 1999, 2009, and 2019, as well as Yamagata isolate (EVD68/Yamagata.JPN/2023-89), in Yamagata, Japan. The neutralizing antibody (Ab)-positive rates for those under 20 years old were 61.0%, 82.5%, 84.3%, 46.7%, 50.5%, and 67.9%, in each year, whereas the rates for those above 20 years old were between 93.4% and 99.1%. Generally, geometric mean titers (GMTs）increased with age among children and the total GMT in each year was 25.4, 49.2, 37.2, 30.8, 29.5, and 33.9, from 1976 to 2019, respectively. The findings in this Yamagata-based study showed that the seroprevalence of EV-D68 over the last four decades has increased with age among children, as a susceptible group, and then reaches a plateau of over approximately 80% among adults. This study clearly revealed that EV-D68 was stably transmitted among children in the 20th century, when EV-D68 detection was quite rare.

Correlation Analysis of the Transcriptome and Gut Microbiota in Salmo trutta Resistance to Aeromonas salmonicida

Aeromonas salmonicida is a major pathogenic bacterium that poses a significant threat to salmonid fish. Yadong County, located in the Xizang Autonomous Region, is renowned for its characteristic industry of Salmo trutta aquaculture. In recent years, the outbreak of Bacterial Gill Disease (BGD) has led to substantial economic losses for S. trutta farmers. Our prior research identified A. salmonicida as one of the primary culprits behind BGD. To mitigate the impact of A. salmonicida on S. trutta, we conducted a comprehensive study aimed at identifying genes associated with resistance to A. salmonicida. This involved transcriptome sequencing and 16S rRNA sequencing of intestinal flora, providing valuable insights for the study of disease resistance in S. trutta. In this study, we identified 324 genera with 5171 ASVs in the susceptible group and 293 genera with 5669 ASVs in the resistant group. Notably, Methylobacterium and Sphingomonas were common bacteria present in the salmon’s gut, and their proportions remained relatively stable before and after infection. Shewanella, with its antagonistic relationship with Aeromonas, may play a crucial role in the salmon’s defense against A. salmonicida. Several related genes were identified, including angptl4, cipcb, grasp, ccr9a, sulf1, mtmr11, B3GNT3, mt2, PLXDC1, and ank1b.

Long COVID in Children: A Call for Paying More Attention

Long COVID in pediatric patients has lately attracted the interest of healthcare professionals and researchers around. Children, although typically less susceptible to severe sickness caused by the virus, can still have enduring symptoms such as weariness, impaired concentration, and respiratory problems long after their first infection. Acknowledging and dealing with these persistent consequences is essential to guaranteeing the general health and welfare of pediatric patients. Healthcare practitioners need to dedicate more focus to the phenomena of Long COVID in children, undertaking additional research to comprehend its frequency, risk factors, and best therapies. By enhancing knowledge and executing customized interventions for those impacted, we can more effectively facilitate the process of recovery and enhance results for this susceptible group.

Predicting host species susceptibility to influenza viruses and coronaviruses using genome data and machine learning: a scoping review.

Predicting which species are susceptible to viruses (i.e., host range) is important for understanding and developing effective strategies to control viral outbreaks in both humans and animals. The use of machine learning and bioinformatic approaches to predict viral hosts has been expanded with advancements in in-silico techniques. We conducted a scoping review to identify the breadth of machine learning methods applied to influenza and coronavirus genome data for the identification of susceptible host species. The protocol for this scoping review is available at https://hdl.handle.net/10214/26112. Five online databases were searched, and 1,217 citations, published between January 2000 and May 2022, were obtained, and screened in duplicate for English language and in-silico research, covering the use of machine learning to identify susceptible species to viruses. Fifty-three relevant publications were identified for data charting. The breadth of research was extensive including 32 different machine learning algorithms used in combination with 29 different feature selection methods and 43 different genome data input formats. There were 20 different methods used by authors to assess accuracy. Authors mostly used influenza viruses (n = 31/53 publications, 58.5%), however, more recent publications focused on coronaviruses and other viruses in combination with influenza viruses (n = 22/53, 41.5%). The susceptible animal groups authors most used were humans (n = 57/77 analyses, 74.0%), avian (n = 35/77 45.4%), and swine (n = 28/77, 36.4%). In total, 53 different hosts were used and, in most publications, data from multiple hosts was used. The main gaps in research were a lack of standardized reporting of methodology and the use of broad host categories for classification. Overall, approaches to viral host identification using machine learning were diverse and extensive.

A Comparison of the Cecal Microbiota between the Infection and Recovery Periods in Chickens with Different Susceptibilities to Eimeria tenella.

To investigate the effect of Eimeria tenella (E. tenella) infection on the cecal microbiota, resistant and susceptible families were screened out based on the coccidiosis resistance evaluation indexes after E. tenella infection. Subsequently, a comparative analysis of cecal microorganisms among control, resistant, and susceptible groups as well as between different periods following the E. tenella challenge was conducted using metagenomic sequencing technology. The results showed that the abundance of opportunistic pathogens, such as Pantoea, Sporomusa, and Pasteurella in the susceptible group and Helicobacter and Sutterella in the resistant group, was significantly higher on day 27 post-inoculation (PI) (the recovery period) than on day 5 PI (the infection period). Additionally, the abundance of Alistipes, Butyricicoccus, and Eubacterium in the susceptible group and Coprococcus, Roseburia, Butyricicoccus, and Lactobacillus in the resistant group showed a significant upward trend during the infection period compared with that in the recovery period. On day 5 PI, the abundance of Faecalibacterium and Lactobacillus was decreased in both the resistant and susceptible groups when compared with that in the control group and was greater in the resistant group than in the susceptible group, while Alistipes in the susceptible group had a relatively higher abundance than that in other groups. A total of 49 biomarker taxa were identified using the linear discriminant analysis (LDA) effect size (LEfSe) method. Of these, the relative abundance of Lactobacillus aviarius, Lactobacillus salivarius, Roseburia, and Ruminococcus gauvreauii was increased in the resistant group, while Bacteroides_sp__AGMB03916, Fusobacterium_mortiferum, Alistipes_sp__An31A, and Alistipes_sp__Marseille_P5061 were enriched in the susceptible group. On day 27 PI, LDA scores identified 43 biomarkers, among which the relative abundance of Elusimicrobium_sp__An273 and Desulfovibrio_sp__An276 was increased in the resistant group, while that of Bacteroides_sp__43_108, Chlamydiia, Chlamydiales, and Sutterella_sp__AM11 39 was augmented in the susceptible group. Our results indicated that E. tenella infection affects the structure of the cecal microbiota during both the challenge and recovery periods. These findings will enhance the understanding of the effects of changes in the cecal microbiota on chickens after coccidia infection and provide a reference for further research on the mechanisms underlying how the intestinal microbiota influence the growth and health of chickens.

Pilot implementation of the revised criteria for staging of Alzheimer's disease by the Alzheimer's Association Workgroup in a tertiary memory clinic.

We aimed to evaluate the feasibility of the 2024 Alzheimer's Association Workgroup's integrated clinical-biological staging scheme in outpatient settings within a tertiary memory clinic. The 2018 syndromal cognitive staging system, coupled with a binary biomarker classification, was implemented for 236 outpatients with cognitive concerns. The 2024 numeric clinical staging framework, incorporating biomarker staging, was specifically applied to 154 individuals within the Alzheimer's disease (AD) continuum. The 2024 staging scheme accurately classified 95.5% AD. Among these, 56.5% exhibited concordant clinical and biological stages (canonical), 34.7% demonstrated more advanced clinical stages than biologically expected (susceptible), and 8.8% displayed the inverse pattern (resilient). The susceptible group was characterized by a higher burden of neurodegeneration and inflammation than anticipated from tau, whereas the resilient group showed the opposite. The 2024 staging scheme is generally feasible. A discrepancy between clinical and biological stages is relatively frequent among symptomatic patients with AD. The 2024 AA staging scheme is generally feasible in a tertiary memory clinic. A discrepancy between clinical and biological stages is relatively frequent in AD. The mismatch may be influenced by a non-specific pathological process involved in AD. Individual profiles like aging and lifestyles may contribute to such a mismatch. Matched and mismatched cases converge toward similar clinical outcomes.

Prevalence and epidemiological distribution of indicators of pathogenic bacteria in households drinking water in Ethiopia: a systematic review and meta-analysis

BackgroundEnsuring the availability of safe drinking water remains a critical challenge in developing countries, including Ethiopia. Therefore, this paper aimed to investigate the prevalence of fecal coliform and E. coli bacteria and, geographical, children availability, and seasonal exposure assessment through a meta-analysis.MethodsTwo independent review groups extensively searched internet databases for English-language research articles published between 2013 and 2023. This systematic review and meta-analysis followed PRISMA guidelines. The methodological quality of each included study was evaluated using the STROBE guidelines. Publication bias was assessed by visual inspection of a funnel plot and then tested by the Egger regression test, and meta-analysis was performed using DerSimonian and Laird random-effects models with inverse variance weighting. Subgroup analyses were also conducted to explore heterogeneity.ResultsOut of 48 potentially relevant studies, only 21 fulfilled the inclusion criteria and were considered for meta-analysis. The pooled prevalence of fecal coliform and E. coli was 64% (95% CI: 56.0–71.0%, I2 = 95.8%) and 54% (95% CI: 45.7–62.3%, I2 = 94.2%), respectively. Subgroup analysis revealed that the prevalence of fecal coliform bacteria increased during the wet season (70%) compared to the dry season (60%), particularly in households with under-five children (74%) compared to all households (61%), in rural (68%) versus urban (66%) areas, and in regions with high prevalence such as Amhara (71%), Gambela (71%), and Oromia (70%). Similarly, the prevalence of E. coli was higher in households with under-five children (66%) than in all households (46%).ConclusionsThe analysis highlights the higher prevalence of fecal coliform and E. coli within households drinking water, indicating that these bacteria are a significant public health concern. Moreover, these findings emphasize the critical need for targeted interventions aimed at improving drinking water quality to reduce the risk of fecal contamination and enhance public health outcomes for susceptible groups, including households with under-five children, in particular geographical areas such as the Amhara, Gambela, and Oromia regions, as well as rural areas, at point-of-use, and during the rainy season.RegistrationThis review was registered on PROSPERO (registration ID - CRD42023448812).

Prevalence and repercussions of stress and mental health issues on primary and middle school students: a bibliometric analysis.

This study analyzes the presence and reverberations of stress, anxiety, and other mental health issues on primary and middle school students using bibliometric analysis. The aim of this study is to map the research landscape by statistically analyzing existing literature and identifying key themes, trends, and research hotspots in the domain of stress in students. This study also presents analysis related to top contributing countries, journals, authors, citations, and collaboration networks. A total of 1,335 publications from 1962 to 10 September 2023 were included in this study using the Web of Science, PubMed, and Scopus databases. The steps involved in the bibliometric study included data collection, cleaning, and various analyses such as performance analysis, citation analysis, and network analysis. Biblioshiny by RStudio and Microsoft Excel were used for bibliometric analysis to determine the collaboration between countries and authors and to explore keyword analysis and thematic evolution. The findings show that China and USA have contributed the highest number of publications. Frontiers in Psychology with 50 publications turns out to be the most prominent journal. The study presents the thematic evolution and the trend topics in this research domain. Some of the trend topics are stress, test anxiety, bullying, depression, cyberbullying, virtual reality, mathematics anxiety, childhood maltreatment and self-compassion, primary school, and middle school. The paper also highlights the prominent authors and their collaboration network. The study has highlighted the various reasons for stress and its potential repercussions on students. This information can be used to help parents, teachers, and the school administration to spot the most susceptible group of students who need immediate intervention to address various mental health issues. We see a gradual progress in the research areas being covered under this domain. More relevant areas of concern related to stress are being explored with time. With the technological advancement and the vast unmonitored internet usage (especially for primary and middle school students), the stress caused by cyberbullying and peer victimization has also become an important topic of research in later years.

Controlling enzyme hydrolysis of branched polymers synthesised using transfer-dominated branching radical telomerisation via telogen and taxogen selection

With the ever-growing reliance on polymeric materials for numerous applications, new avenues to induce, design and control degradation are clearly important. Here, we describe a previously unreported approach to controlling enzymatic hydrolysis of high molecular weight branched polymers formed from the new free-radical polymer synthesis strategy transfer-dominated branching radical telomerisation (TBRT). Modifying the chemical nature of TBRT polymers may be accomplished through telogen selection and multi-vinyl taxogen (MVT) design, and we show telogen-driven control of enzyme-catalysed hydrolysis and the impact of careful placement of hydrolytically susceptible groups within readily synthesised MVTs. Our results indicate that utilising conventional free-radical chemistries and unsaturated monomers as feedstocks for highly branched polymer architectures has considerable potential for the design of future materials that degrade into very low molecular weight byproducts at variable and controllable rates.