Conectar
by Nailya Ibragimova, Arailym Aitynova, Seitzhan Turganbay, Marina Lyu, Alexandr Ilin, Tamari Gapurkhaeva, Galina Ponomareva, Karina Vassilyeva, Diana Issayeva, Amirkan Azembayev, Serzhan Mombekov, Aralbek Rsaliyev, Nurgul Sikhayeva, Yergali Abduraimov, Saki Raheem
Iodine-based antiseptics are essential in wound care but are often limited by cytotoxicity, instability, and rapid iodine release. Novostron is a novel polymer–iodine complex incorporating dextrin, polyvinyl alcohol, and metal ions, designed to enable controlled iodine release. Structural integrity and composition were confirmed by ¹H and 13C NMR spectroscopy and physicochemical analysis, indicating a molecular weight of ~9500 g/mol, a pH of 4.23, and an iodine content of 8.13%. Pharmacokinetic analysis in rabbits demonstrated that following a single dermal application, systemic iodine absorption was minimal, with peak blood iodine concentrations remaining within physiological limits and rapid elimination within 24 hours. Evaluation of thyroid function revealed no significant changes in serum T₃, T₄, or TSH levels compared with those of the controls, confirming that topical application of Novostron does not disrupt thyroid homeostasis. In compliance with OECD guidelines in rabbits, guinea pigs, and rats, Novostron showed no signs of dermal irritation, skin sensitization, or systemic toxicity (LD₅₀ > 2000 mg/kg). In a rat cotton pellet granuloma model, Novostron significantly reduced the inflammatory mass (23.65% inhibition), supporting its anti-inflammatory potential. In a murine burn model, Novostron accelerated wound contraction (25.95% at day 10), increased epidermal thickness, and enhanced collagen deposition (~44%), outperforming controls and matching or exceeding betadine. These findings suggest that Novostron promotes tissue repair by modulating inflammation. Overall, Novostron demonstrated a favourable preclinical safety and efficacy profile, and its polymer–iodine composition, which enables controlled release and localized activity highlights its potential as a promising topical therapeutic. However, the study was limited to animal models and short-term observation; further long-term and clinical investigations are needed to confirm its translational potential in human wound healing.by Hailemariam Gezie, Endalk Birrie Wondifraw, Muluken Amare Wudu, Habtam Gelaye, Fekadeselassie Belege Getaneh
BackgroundNeural tube defects (NTDs) are severe congenital anomalies resulting from the incomplete closure of the embryonic neural tube, affecting around 300,000 newborns globally each year and leading to significant mortality and disability. While high-income countries have seen a reduction in NTD prevalence, developing nations like Ethiopia continue to face high rates. Families impacted by NTDs often endure emotional challenges, including grief, anxiety, and social isolation. This study aims to investigate the birth prevalence of NTDs and the associated parental stress, emphasizing the wider effects on families.
MethodologyAn institution-based cross-sectional study was conducted in Dessie and Deber Berhan comprehensive specialized hospitals from July 24, 2023, to July 24, 2024, to evaluate the birth prevalence of NTDs and the associated parental stress among parents of children aged 1 month to 12 years diagnosed with NTDs. A total of 308 parent-child pairs participated in the study. Data were gathered using a pretested questionnaire and an 18-item Parenting Stress Scale. Statistical analysis was performed using Stata version 17, where linear regression was utilized to identify significant predictors after verifying the necessary assumptions. The findings were presented in multiple formats for clarity and comprehensibility.
ResultsThe overall birth prevalence of neural tube defects was found to be 0.0052 (95% CI: 0.0038, 0.0067), which translates to 52 cases per 10,000 deliveries. Key factors associated with increased parental stress included being a mother (β = 2.51), older parental age (β = 0.18), the child’s age (β = 0.81), a prior history of having children with NTDs (β = 7.88), and the presence of a ventriculoperitoneal shunt in the child (β = 4.66).
ConclusionThe findings of this study indicate that the birth prevalence of NTDs is becoming a significant public health concern. Additionally, several factors contributing to increased parental stress were identified, including older parental age, the child’s age, a previous history of NTDs in siblings, and the presence of a ventriculoperitoneal shunt. These results highlight the urgent need for targeted support and resources for affected families to help mitigate the psychological impact associated with these conditions.
by Abebe Fenta, Tebelay Dilnessa, Destaw Kebede, Mekuriaw Belayneh, Zigale Hibstu Teffera, Bewket Mesganaw, Adane Adugna, Wubetu Yihunie Belay, Habtamu Belew, Desalegn Abebaw, Bantayehu Addis Tegegne, Zelalem Dejazmach, Fassikaw Kebede, Gashaw Azanaw Amare
BackgroundCo-infection with the human immunodeficiency virus (HIV) and tuberculosis (TB) is a primary cause of death and morbidity. The rate of morbidity and death from TB-HIV is still Ethiopia’s top health issue.
ObjectiveThis study aimed to assess the incidence and predictors of mortality among TB-HIV co-infected individuals on anti-TB and anti-retroviral dual Therapy at Debre Markos Comprehensive Specialized Hospital, Northwest Ethiopia.
MethodsA retrospective cohort study was conducted at the Debre Markos Comprehensive Specialized Hospital among 436 TB-HIV co-infected individuals. A computer-generated random sampling technique was used to select patient charts registered from September 1st, 2011, and August 31st, 2020. Epi-Data version 3.1 was used for data entry, and STATA version 13 was used for the analysis. The Kaplan-Meier survival curve was applied to estimate the cumulative survival time of the TB-HIV patients. Log-rank tests were utilized to compare the survival time across various categories of explanatory variables. Bi-variable and multivariable Cox proportional hazard models were fitted to find predictors of TB-HIV mortality.
ResultsThe mortality rate of TB-HIV co-infected individuals was 15.6%, with a median survival time of 42 months. Being male (Adjusted hazard Ratio (AHR)1.914;95%CI: 1.022–3.584), having CD4 count Conclusion and recommendation
The mortality rate among TB-HIV co-infected patients at Debre Markos Comprehensive Specialized Hospital was high. Being male gender, having a CD4 count below 50 cells/mm³, being ambulatory and bedridden, having low baseline weight, and having low hemoglobin were the important predictors of mortality. To reduce mortality, it is crucial to focus on the early identification and management of high-risk patients, particularly those with low CD4 counts, poor functional status, and low hemoglobin. Strengthening integrated TB and HIV care services is recommended to improve patient survival outcomes.
by Soha Albeitawi, Mohammad Talal Al-zubi, Anas Aljaiuossi, Murad Shatnawi, Ahlam Al-Kharabsheh, Fadi Sawaqed, Emad Aborajooh, Walid I. Wadi, Randa Mahasneh, Benjamin Rowland Colton, Mohammad AlQudah, Tamara Kufoof, Fida Asali, Ahmed Sheyyab, Monther A. Gharaibeh, Motasem Al-latayfeh, Enas Al-Zayadneh, Eman Badran, Yaser M. Rayyan, Kais Al Balbissi, Raed Al-Taher, Asma Basha, Rola Saqan, Ashraf Omar Oweis, Wafa Taher, Shadi Hamouri
BackgroundClinical preceptors serve as vital educators, so it is essential to enhance their effectiveness by developing a competency-based development program. In this study, we explored the challenges faced by preceptors and students, and measured the educational needs of preceptors, to inform the design of a syllabus for a preceptor development program.
MethodsThis was a sequential multi method study utilizing a structured questionnaire survey and focus group discussions among a representative sample of medical students in their fourth, fifth, and sixth years in addition to preceptors from the six public medical schools in Jordan.
ResultsThematic analysis of focus group discussions revealed six themes: admission policy, training environment, curriculum gaps, trainers and mentorship, learners, and dissemination. The most important training needs documented by preceptors were teaching in the clinical setting, mentoring skills, simulation, assessment in the clinical setting, and providing feedback. Accordingly, a competency-based preliminary syllabus was developed.
ConclusionIt is essential to enrich the skills of preceptors regularly based on a needs assessment. Further long term studies are required to investigate the effectiveness of the proposed syllabus after implementation.
by Jack Jefferson, Claire Reigate, Alessandra Giacomini, M. Jordana Rivero, Matthew Hitchings, Tamsyn Uren Webster, Konstans Wells
Livestock grazing in confined pastures often means grazing on a less diverse diet than under more natural conditions and increased exposure to gastrointestinal parasites prevailing in these pastures. However, how sward composition influences gut microbiome (GM) diversity and its relationship with parasite burden remains poorly understood. In this study, we analysed the faecal GM of weaned lambs grazing on two distinct sward types (perennial ryegrass and a mixed-species sward) over three consecutive months using 16S rRNA sequencing, in order to assess how microbial diversity and composition are related to environmental conditions and the gastrointestinal nematode (GIN) burden in naturally infected lambs. Sward type and sampling time explained some of the variation in GM alpha diversity and community composition (beta diversity), whereas individual lamb identity accounted for considerably more variation in microbial assemblages. Shifts in the relative abundance of bacterial genera such as Saccharofermentans, Anaerosporobacter, Butyrivibrio in relation to sward type and sampling time suggest mostly adaptive fluctuations in response to diet and pasture condition. Abundance shifts of Negativibacillus, and Candidatus Saccharimonas were also associated with GIN burden, which, in turn, was higher in lambs grazing on mixed swards compared to ryegrass. Our findings add to the growing understanding of how sheep microbiomes vary with pasture management and changes in parasite burden. We highlight that individual identity may shape gut microbiota, and that potential triadic interactions among gastrointestinal parasites, sward exposure, and the gut microbiome underscore the importance of considering host, parasite, and environmental factors collectively when evaluating microbiome dynamics in grazing livestock.by Kenichi Shibuya, Rie Ibusuki, Daisaku Nishimoto, Shiroh Tanoue, Chihaya Koriyama, Shuhei Niiyama, Yasuyuki Kakihana, Toshiro Takezaki, Megumi Hara, Yuichiro Nishida, Sadao Suzuki, Takeshi Nishiyama, Mako Nagayoshi, Takashi Tamura, Yudai Tamada, Rieko Okada, Teruhide Koyama, Satomi Tomida, Kiyonori Kuriki, Jun Otonari, Hiroaki Ikezaki, Asahi Hishida, Masashi Ishizu, Sakurako Katsuura-Kamano, Kenji Wakai, Keitaro Matsuo, for the J-MICC Study group
Although the clinical importance of serum albumin and gamma gap levels is well established, it is unclear how these levels are associated with health risks in the general population. This cohort study aimed to clarify the association between serum albumin and gamma gap levels, and their combined effect, and mortality risk in a Japanese population. The participants totaled 35,746 (17,160 men and 18,586 women) aged 35–69 years from the Japan Multi-Institutional Collaborative Cohort (J-MICC) Study. The mean follow-up period was 11.8 years, with 1,529 deaths and 1,907 censoring. The Cox proportional hazards model was used to estimate hazard ratios (HRs) and 95% confidence intervals after adjusting for related factors. Increased HRs of low albumin and high gamma gap levels were respectively observed for deaths from all-causes, cancer, cardiovascular diseases, respiratory system diseases without pneumonia, and other-causes; and the HR was the highest on respiratory system diseases without pneumonia (HR = 7.31, 4.15–12.9). Low albumin and low gamma gap levels were strongly associated for pneumonia death (HR = 12.4, 3.98–38.5). The interaction between albumin and gamma gap levels was significant for deaths from all-causes, pneumonia and other-causes. The dose relationship for each association was dose-dependent in albumin and threshold-type in gamma gap, except for other-causes. This study suggests that albumin and gamma gap levels are independent indicators of an increased risk of mortality in a Japanese population. Combined effect was apparent for mortality from all-causes, pneumonia, and other-causes.by Dwi Sisca Kumala Putri, Kencana Sari, Nur Handayani Utami, Nazarina Nazarina, Tiara Amelia, Nadira Yuthie Salwa, Ning Sulistiyowati, Adindra Vickar Ega, Muhammad Azzumar, Rika Rachmawati, Salimar, Mieska Despitasari, Donny Kristanto Mulyantoro
BackgroundMobile Health (mHealth) Applications offer a promising approach to promote the adoption of healthy nutrition and behavior among adolescent girls. A tailored mobile app, Teen ‘n Fit, was developed to support adolescent girls in Indonesia to assess their nutritional status, physical activity, and eating behavior; as a nutrition education media; and as a reminder of iron folic acid consumption. However, it is essential to measure the app’s usability prior to the release.
ObjectiveThis study aimed to measure the usability of a mobile application designed to promote nutrition and healthy behavior of adolescent girls by modifying the mHealth App Usability Questionnaire (MAUQ).
MethodsA cross-sectional usability study was conducted on 64 adolescent girls aged 15–18 from a public high school in Depok, Indonesia. Participants completed app-based tasks and filled out a post-task usability questionnaire. The usability questionnaire was adapted from a validated MAUQ for a standalone mHealth app. The exploratory factor analysis was conducted to determine the items constituting each component in the modified MAUQ. Mann-Whitney analysis was employed to analyze the difference in usability score means based on participants’ characteristics.
ResultsThe modified MAUQ demonstrated strong reliability (Cronbach’s alpha = 0.945). The app achieves a strong usability score, 6.0 ± 0.8 out of 7, with 79.7 percent of participants reporting no prior mHealth experience. The score among participants who occasionally used mHealth applications was higher (p = 0.046) than those who had never made prior use.
ConclusionThe findings indicate strong usability potential of Teen ‘n Fit as a digital health promotion tool for adolescent girls; however, future efforts in conducting effectiveness tests and maintaining user engagement are needed.
by David Singleton Nyasvisvo, Shadreck Sande, Rudo Sithole, Tamuka Nhiwatiwa
The study investigated the knockdown and repellent efficacy of smoke from native plants, Vitex payos (Lour.) Merr., Peltophorum africanum Sond., and Adansonia digitata L., against malaria vectors in Bare ward, Mazowe district, Zimbabwe. Three to five-day-old An. gambiae sensu lato (s.l.) were exposed to smoke from the three plants over 150 minutes during knockdown tests. Mortality was scored after 24 hours. A randomized 4 x 4 Latin square design was used to assign plant smoke and control treatments to huts and nights during repellency tests. Repellency was estimated as percentage reduction in biting using CDC light traps between 1800 and 2200 hours. Burning charcoal without plant material was used as control. SPSS software was used for data analysis. KdT50 and kdT90 rates were determined using probit analysis. A negative binomial GLM with a log link function and an emmeans post-hoc test was used to model the number of An. funestus s.l. caught based on smoke treatment, night and hut. Vitex payos and P. africanum knocked down 100% of the An. gambiae s.l. within the 150-minute exposure period. The kdT50 and kdT90 rates were more rapid for V. payos (37.8 and 69.7 min) and P. africanum (44.8 and 89.7 min) than for A. digitata (77.8 and 146.9 min). The percent 24-hr mortality was 91.7 (V. payos), 80 (P. africanum) and 71.6 (A. digitata). Smoke from V. payos (86%, p = 0.008) and P. africanum (73%, p = 0.028) significantly reduced An. funestus s.l. biting. Smoke from V. payos and P. africanum merits further investigation since it has the potential to provide an additive benefit to ITNs by targeting proportions of malaria vectors that bite before bedtime. Studies to determine whether the use of smoke from these plants has a community effect that can lead to the reduction of malaria burden are required and significant.by Moayad Subahi, Fahda Alshaikh, Eyad Dahlawi, Feras Zafar, Tamim Alsulimany, Nawaf Alnefaie, Abdulrahman Almalki
Knee osteoarthritis (KOA) is a prevalent condition that reduces physical function and quality of life. Physical activity is foundational to KOA management; however, patient engagement and perceptions of treatment remain underexplored, particularly in Middle Eastern populations. This study evaluated physical activity (PA) levels among individuals with KOA and explored their perceptions, awareness, and experiences with management strategies, especially physical therapy. A sequential explanatory mixed-methods design was employed. Quantitative data were collected using the International Physical Activity Questionnaire-Short Form (IPAQ-SF) from 60 adults with physician-diagnosed KOA (mean age 55.5 ± 6.4 years; 50% female) recruited from clinics and community programs in Saudi Arabia. Semi-structured interviews with 24 purposively selected participants further explored experiences and perceptions. Descriptive statistics summarized quantitative data, and thematic analysis guided qualitative interpretation. Ninety percent of participants recorded low PA levels (≤600 MET-min/week), with only 10% achieving moderate or high activity levels. Qualitative themes revealed multiple barriers including emotional distress, logistical difficulties, and misconceptions about KOA as well as facilitators such as family support and patient education. Integration of findings highlighted how contextual and psychosocial factors influence PA engagement. Adults with KOA in this study reported markedly low levels of PA, shaped by cultural, psychological, and environmental factors. Our findings highlight the importance of addressing these barriers through patient-centred education and improved access to physical therapy.by Rubin Pooni, Silva Arslanian, Heather Edgell, Hala Tamim, SoJung Lee, Jennifer L. Kuk
ObjectiveAttenuated heart rate recovery (HRR) immediately after exercise is an independent predictor of cardiovascular disease and mortality in adults. We examined the effects of aerobic exercise (AE), resistance exercise (RE), and combined AE and RE on HRR, and the relationship of HRR with body composition and metabolic risk factors in adolescents with overweight or obesity.
Research design and methodsWe included 147 adolescents (BMI ≥ 85th percentile, 12–18 years) who participated in exercise intervention studies (3–6 months), and had a complete data set including VO2peak, body composition by dual-energy X-ray absorptiometry, and cardiometabolic risk factors before and after the interventions. HRR was calculated as the difference between peak HR during the maximal treadmill test and HR at 1-, 2-, 3-, 4-, and 5-min after the cessation of the test.
ResultsAfter interventions, a faster HRR at 2–5 min was observed following AE (17.3–25.6% change, P P P P P 2peak. Changes in HRR were not associated with the changes in % body fat or metabolic risk factors.
ConclusionAE training is more beneficial than RE or combined AE and RE training for improving HRR in adolescents with overweight or obesity.
by Hala Tamim, Elena Levitskaya, MacGregor Goodman, Gwen Ehi, Aliza Maqsood, Safoura Zangiabadi, Yunis Khaled
Although the literature has documented numerous challenges Syrian refugees face during their resettlement in Canada, the unique transition experiences of Syrian refugee parents remain underexplored. This study examines demographic, community and social, migration, and health-related factors that influence the level of difficulty experienced by Syrian refugee parents in Canada during their transition. This cross-sectional, interview-based study was conducted from March 2021 to March 2022, involving 540 Syrian refugee parents in Ontario with at least one child under the age of 18. Transition difficulty was measured based on the question “How difficult has the transition into Canada been for you?” Responses ranged from 1 representing “Not difficult at all” and 5 representing “Very difficult”. 6.5% of participants rated their transition as “Not difficult at all”, 15.9% as “Not difficult, “20.6% as “Neutral”, 43% as “Difficult”, and 13.7% as “Very difficult”. Results of the multiple linear regression analyses indicated that greater transition difficulty was significantly associated with experiences of discrimination at children’s school events (Adjβ = 0.138, p = 0.038), dissatisfaction with friendships (Adjβ = 0.134, p = 0.006), being over age 45 (Adjβ = 0.301, p = 0.047), lower proficiency in English or French (Adjβ = − 0.145, p = 0.008), longer duration spent in Canada (Adjβ = 0.123, pby Karina Kouzaki, Mako Isemura, Yuki Tamura, Hiroyuki Uno, Shunta Tadano, Ryuji Akimoto, Katsu Hosoki, Koichi Nakazato
Cancer cachexia causes severe muscle wasting, and current treatments remain limited. Belt-type electrical muscle stimulation (bEMS) has emerged as a passive rehabilitation tool capable of activating multiple lower limb muscles simultaneously. We investigated whether bEMS prevents muscle wasting and improves functional outcomes in rats with cancer cachexia. Cancer cachexia was induced in male Sprague-Dawley rats by intraperitoneal injection of AH130 Yoshida hepatoma cells. Acute and chronic effects of bEMS were tested. Muscle protein synthesis was evaluated using the SUnSET method, and muscle fiber cross-sectional area (CSA) and ankle torque were measured after chronic stimulation. bEMS increased puromycin-labeled protein levels on day 3 post-injection (~1.5–2.0 fold; pby Hana Wakasa, Satoshi Sunohara, Takashi Kimura, Takaya Ichikawa, Akiko Tamakoshi
Obesity is a growing global health concern and has been associated with increased mortality from various cancer types, including hematological malignancies. However, evidence for this association in Asian populations, particularly among Japanese adults, remains limited. Thus, this study aimed to examine the association between obesity and mortality due to hematological malignancies. Data from 97,073 participants in the Japan Collaborative Cohort (JACC) Study were analyzed. The participants were followed for a mean duration of 17 years. Body mass index (BMI) was calculated using self-reported height and weight and categorized as underweight (by Tadesse Tarik Tamir, Berhan Tekeba, Alebachew Ferede Zegeye, Deresse Abebe Gebrehana, Mulugeta Wassie, Gebreeyesus Abera Zeleke, Enyew Getaneh Mekonen
IntroductionSolitary childbirth—giving birth without any form of assistance—remains a serious global public health issue, especially in low-resource settings. It is associated with preventable maternal complications such as hemorrhage and sepsis, and poses significant risks to newborns, including birth asphyxia, infection, and early neonatal death. In Ethiopia, where many births occur outside health facilities, understanding the spatial and socio-demographic patterns of solitary childbirth is vital for informing targeted interventions to improve maternal and child health outcomes. This study aims to identify and map the spatial distribution of solitary childbirth across Ethiopia and to analyze its determinants using data from the 2019 national Interim Demographic and Health Survey.
MethodWe analyzed data from the 2019 Interim Ethiopian Demographic and Health Survey to determine the spatial distribution and factors of solitary birth in Ethiopia. A total weighted sample of 3,884 women was included in the analysis. Spatial analysis was used to determine the regional distribution of solitary birth, and multilevel logistic regression was employed to identify its determinants. ArcGIS 10.8 was used for spatial analysis, and Stata 17 was used for multilevel analysis. The fixed effect was analyzed by determining the adjusted odds ratio with a 95% confidence interval.
ResultThe prevalence of solitary childbirths in Ethiopia was 12.73%, with a 95% confidence interval spanning from 11.71% to 13.81%. The western and southern parts of Oromia, all of Benishangul-Gumuz, most parts of the SNNPR, and the west of Amhara regions were hotspot areas for solitary birth. Having no formal education, not attending ANC visits, and residing in pastoral regions were significantly associated with higher odds of solitary birth in Ethiopia.
CocnlusionA notable proportion of women are experiencing childbirth alone, which highlights a significant aspect of maternal health in the country, reflecting both the challenges and improvements in childbirth practices. The distribution of solitary births exhibited spatial clustering with its hotspot areas located in western and southern parts of Oromia, all of Benishangul-Gumuz, most parts of the SNNPR, and west of Amhara regions. Lack of education, not having an ANC visit, and being a resident of pastoral regions were significant determinants of solitary birth. The implementation of maternal and child health strategies in Ethiopia could benefit from considering the hotspot areas and determinants of solitary birth.
by Ibrahim Aqtam, Ahmad Ayed, Ahmad Batran, Moath Abu Ejheisheh, Riham H. Melhem, Mustafa Shouli
IntroductionWork engagement, defined as a positive, fulfilling, work-related state of mind characterized by vigor, dedication, and absorption, is crucial for nurse retention and quality of care in high-stress environments. Neonatal Intensive Care Units (NICUs) present unique emotional and psychological challenges for nurses, necessitating skills like emotional intelligence (EI) to enhance work engagement. This study investigates the association between EI, demographic factors, and work engagement among Palestinian NICU nurses.
MethodsA cross-sectional, descriptive correlational design was employed during February-April 2025. Of 230 nurses invited, 207 completed the survey (response rate = 90.2%) across 12 Palestinian NICUs using convenience sampling. Data analysis was conducted using descriptive statistics, Pearson’s correlation, and multiple linear regression via SPSS v26. Validated tools, the Schutte Self-Report Emotional Intelligence Test (SSEIT) and Utrecht Work Engagement Scale (UWES), were used.
ResultsEmotional intelligence (EI) demonstrated a strong positive correlation with work engagement (r = 0.693, p B = 0.463, β = 0.535, p = 0.002), female gender (B = −2.250, β = −0.115, p = 0.017), and rotating shifts (B = 1.579, β = 0.105, p = 0.028) were significant predictors. EI was the strongest predictor (B = 0.358, β = 0.593, p M = 47.3 ± 5.8).
DiscussionThe findings demonstrate strong associations between EI and engagement in high-stress NICU environments. Based on these findings, we propose implementing comprehensive EI training programs in nursing curricula, establishing mentorship programs to address age-related disparities, and developing gender-sensitive workplace policies to optimize work engagement and improve patient care quality.
by Esther Ba-Iredire, James Atampiiga Avoka, Luke Abanga, Abigail Awaitey Darkie, Emmanuel Junior Attombo, Eric Agboli
IntroductionThe alarming rate of drug-resistant tuberculosis (DR-TB) globally is a threat to treatment success among positive tuberculosis (TB) cases. Studies aimed at determining the prevalence, trend of DR-TB and socio-demographic and clinical risk factors contributing to DR-TB in the four regions of Ghana are currently unknown. This study sought to determine the prevalence and trend of DR-TB, identify socio-demographic and clinical risk factors that influence DR-TB, and analyse the relationship between underweight and adverse drug reactions and treatment outcomes among DR-TB patients in four regions of Ghana.
MethodIt was a retrospective review conducted over 5 years, from January 2018 to the end of December 2022. The data were retrieved from the DR-TB registers and folders at the Directly Observed Treatment (DOT) centres in the four regions. Analysis of the data was conducted using STATA version 17.
ResultsThe prevalence of DR-TB in Ashanti was 10.1%, Eastern 5.3%, 27.8% in Central, and 2.7% in the Upper West region for the year 2022. The overall prevalence rate of DR-TB for the period 2018–2022 was 13.8%. The socio-demographic and clinical risk factors that influence DR-TB in the four regions are: age, marital status (aOR 3.58, P-value Conclusion
The study shows that the prevalence of DR-TB in Ghana is low, probably not because the cases have reduced but due to inadequate GeneXpert machines to detect the cases. Age, marital status, education, alcohol intake, previously treated TB cases, adverse drug reactions, underweight, and treatment outcome are factors influencing the development of DR-TB. Therefore, interventions aimed at improving the nutritional status of DR-TB cases and minimising adverse drug reactions will improve treatment outcomes.
by Yordi Sebastián Tamayo-Molina, Juan Felipe Valdés-López, Geysson J. Fernandez, Silvio Urcuqui-Inchima
Dengue virus (DENV), the etiological agent of dengue fever, remains a global health concern, leading to severe illness and death in the absence of any definitive cure. Research has shown that vitamin D may reduce DENV replication in vitro and that dengue patients with low or deficient vitamin D levels are at higher risk of severe dengue. Studies indicate that viral replication is inhibited in human monocyte-derived macrophages (MDM) differentiated in the presence of vitamin D (D3MDM), suggesting that vitamin D may prevent DENV entry into host cells. However, despite these findings, the role of vitamin D in regulating the temporal expression patterns of genes as early, mid, and late transcriptional profile of DENV-infected macrophages remains unclear. Therefore, utilizing a kinetic transcriptomic profile is crucial. This approach provides detailed insights into the dynamic changes in gene expression over time, helping to clarify how vitamin D can modulate the immune response at critical stages of DENV infection. To address the transcriptional dynamics, we conducted a comprehensive analysis of gene expression patterns in MDM and D3MDM infected with Dengue virus serotype 2 (DENV-2). Utilizing bulk RNA sequencing alongside a standard viral growth curve, we systematically analyzed transcriptional kinetics by selecting key time points: 1.5, 3, 5.5, and 10 hours post-infection (h.p.i.) to monitor early viral entry and replication events and 24 h.p.i. to assess gene expression during peak viral particle production. Our temporal analysis revealed a progressive increase in cellular transcripts within the first hour of infection, with a more pronounced gene expression pattern in DENV-2-infected MDM compared to DENV-2-infected D3MDM at this early stage. Enrichment analysis indicated a reduced inflammatory response in DENV-2-infected D3MDM. Additionally, transcription factor analysis suggested diminished NF-κB signaling, but enhanced IRF5 activity was elevated in the DENV-2-infected D3MDM. High-dimensional clustering analysis identified nine unique gene clusters across both macrophage types, with notable upregulation of genes associated with antiviral activity, including IDO1, ISG20, OASL, IFI44L, RSAD2, IFIT1, MX1, EPSTI1, CXCL10, and CXCL11 in DENV-2-infected D3MDM at 1.5 h.p.i., suggesting an enhanced early antiviral response. These findings indicate that vitamin D modulates the magnitude and diversity of the early transcriptional responses, highlighting its potential as a therapeutic option to mitigate DENV severity.
FreshRSS