Nevin Manimala

BDJ Open. 2024 Dec 28;10(1):100. doi: 10.1038/s41405-024-00292-7.

ABSTRACT

INTRODUCTION: Guided surgery for immediate anterior implants aims to reduce the time required for aesthetic and functional immediate loading. However, the limited surface area of anterior teeth for guide stabilization may affect the accuracy of implant positioning. This in vitro study evaluated the effect of the number of supporting teeth on the accuracy of immediate implants in the maxillary central incisor region.

METHODS: 28 replica implants were inserted into 28 upper jaw models, simulating immediate post-extraction sockets of tooth 11. Based on the number of supporting teeth, the implants were categorized into G1 (four adjacent teeth) and G2 (six adjacent teeth). The planned and actual implant positions were compared using the evaluation module of the implant planning software. Angular and 3D deviations were measured as the primary outcomes. Statistical analysis was performed using the two-sample t-test, with p-values less than 0.05 defined as statistically significant.

RESULTS: Between group G1 and G2, angular deviation was measured at 4.63 ± 0.71° and 3.59 ± 0.97°, respectively, while the implant apex 3D deviation was 2.08 ± 0.21 mm for G1 and 1.40 ± 0.27 mm for G2. These differences were statistically significant (p = 0.003 and p < 0.001, respectively). Other discrepancy variables in G2 demonstrated lower values but were not statistically significant compared to G1.

CONCLUSION: The number of supporting teeth for the surgical guide can influence the accuracy of immediate implant surgery. While both four-teeth and six-teeth supports demonstrated acceptable clinical implant accuracy, a surgical guide supported by six teeth can enhance implant precision.

PMID:39732724 | DOI:10.1038/s41405-024-00292-7

BDJ Open. 2024 Dec 28;10(1):99. doi: 10.1038/s41405-024-00290-9.

ABSTRACT

BACKGROUND: Mefakia is a well-known traditional chewing wood used in Ethiopia to cleanse the mouth. Although mefakia is used in parallel with modern toothbrushes to improve oral hygiene, there is a gap in the literature regarding its comparative performance in removing plaque and maintaining good oral hygiene.

OBJECTIVE: This study aimed to evaluate and compare the oral hygiene status of patients using mefakia and modern toothbrushes at the Holy Bethel Dental Clinic in Addis Ababa, Ethiopia.

METHODS: This comparative cross-sectional study was conducted at the Holy Bethel Dental Clinic in Addis Ababa, Ethiopia. A total of 246 patients (123 mefakia and 123 modern toothbrush users) were included in this study. Participants were selected using a systematic random sampling method. Data on demographic characteristics, oral hygiene practices, and clinical oral health parameters, such as the calculus index, were collected through interviews and clinical examinations. Statistical analysis was performed using SPSS version 23 to compare the oral hygiene status between the two groups. The results are presented in tables, diagrams, and text.

RESULTS: Most respondents were aged 20-39; 66.7% and 73.2% used mefakia and toothbrushes, respectively. Sixty-seven percent of the toothbrush users had good oral hygiene, whereas 65% of the mefakia users had good oral hygiene.

CONCLUSIONS: This finding suggests that mefakia and modern toothbrushes are comparable in their effectiveness in maintaining oral hygiene. Dental education should emphasize using available and affordable oral hygiene tools such as mechanical toothbrushes and fluoridated toothpaste to improve overall oral hygiene.

PMID:39732717 | DOI:10.1038/s41405-024-00290-9

BMC Pregnancy Childbirth. 2024 Dec 28;24(1):879. doi: 10.1186/s12884-024-07084-9.

ABSTRACT

BACKGROUND: Antinuclear antibodies (ANA) are important biomarkers for the diagnosis of autoimmune diseases; however, the general population also tests positive at a low frequency, especially in women. Although the effects of various autoimmune diseases on pregnancy outcomes have been studied, the association of ANA with pregnancy outcomes in healthy individuals is unclear. Preterm birth (PTB), a major cause of neonatal death or long-term health problems, is a complex condition with a multifactorial etiology, and the underlying mechanism remains unclear. The present Adjunct Study aimed to determine the association between ANA and PTB in pregnant Japanese women based on a data analysis of the Japan Environment and Children’s Study.

METHODS: In a prospective cohort design, we analyzed the demographic and pregnancy outcome data of 1085 pregnant Japanese women who were recruited between January 2011 and March 2014 in the Kumamoto University target area. Demographic data were collected using self-administered questionnaires and physician records. A serum ANA titer of ≥ 1:40 was defined as positive. Statistical analysis was performed by logistic regression analysis with PTB as the objective variable.

RESULTS: The PTB rate was significantly higher in those who were ANA-positive (adjusted odds ratio, 2.06; 95% confidence interval, 1.09-3.87) than in those who were not.

CONCLUSIONS: This study suggests that ANA positivity in the first trimester of pregnancy is associated with an increased risk of PTB.

PMID:39732712 | DOI:10.1186/s12884-024-07084-9

BMC Health Serv Res. 2024 Dec 28;24(1):1659. doi: 10.1186/s12913-024-12174-7.

ABSTRACT

BACKGROUND: Electronic pharmacy (e-pharmacy) services are growing rapidly, offering increased accessibility, privacy, and value. Understanding e-pharmacy customer satisfaction, attitudes, and perceptions in Saudi Arabia is crucial for improving the services and enhancing health outcomes. This study aims to examine customers’ perceptions, preferences, satisfaction, and experiences with electronic pharmacy services, including community pharmacy e-commerce.

METHODS: A quantitative cross-sectional design was utilized and conducted in Saudi Arabia. A self-administered online questionnaire was distributed via social media, and convenience sampling was used to collect data from December 2022 to January 2023. The questionnaire was adapted from validated academic questionnaires and consisted of five sections. The online form data was retrieved and analyzed using the IBM SPSS Statistics program.

RESULTS: The sample comprised 351 respondents, most of whom were Saudi citizens (90.3%), aged 41-60 years (36.5%), and non-healthcare professionals (35%). Of the participants, 256 (72.93%) were aware of e-pharmacies. Younger participants and those with higher education levels were more aware of e-pharmacies (p < 0.05), with no significant effect of gender or nationality on awareness. Positive perceptions of e-pharmacies exist, but there is limited knowledge about individualized care services (61.8% uncertain). Of the participants, 134 (38.17%) had never used e-pharmacies, and only 24.2% preferred buying medications online, while 75.8% favored physical pharmacies. On a Likert Scale, participants reported moderate levels of satisfaction with e-pharmacies’ values/prices and delivery speeds. Many e-pharmacy customers had a positive experience (only 1.1% negative). The findings reveal that service quality, product availability, perceived value, and price could be the potential factors that affect customer satisfaction. Moreover, these factors, along with the provision of personalized care, could shape customers’ attitudes toward and perceptions of e-pharmacy.

CONCLUSIONS: There is potential for development in e-pharmacy services as seen by the persistence of a preference for traditional pharmacies despite moderate satisfaction ratings. To increase customer satisfaction in Saudi Arabia, we recommend improving personalized care services by raising awareness about e-pharmacy benefits to improve customer satisfaction and adoption.

PMID:39732707 | DOI:10.1186/s12913-024-12174-7

Pediatr Rheumatol Online J. 2024 Dec 28;22(1):111. doi: 10.1186/s12969-024-01053-4.

ABSTRACT

BACKGROUND: Primary small vessel CNS vasculitis (sv-cPACNS) is a challenging inflammatory brain disease in children. Brain biopsy is mandatory to confirm the diagnosis. This study aims to develop and validate a histological scoring tool for diagnosing small vessel CNS vasculitis.

METHODS: A standardized brain biopsy scoring instrument was developed and applied to consecutive full-thickness brain biopsies of pediatric cases and controls at a single center. Stains included immunohistochemistry and Hematoxylin & Eosin. Nine North American neuropathologists, blinded to patients’ presentation, diagnosis, and therapy, scored de-identified biopsies independently.

RESULTS: A total of 31 brain biopsy specimens from children with sv-cPACNS, 11 with epilepsy, and 11 with non-vasculitic inflammatory brain disease controls were included. Angiocentric inflammation in the cortex or white matter increases the likelihood of sv-cPACNS, with odds ratios (ORs) of 3.231 (95CI: 0.914-11.420, p = 0.067) and 3.923 (95CI: 1.13-13.6, p = 0.031). Moderate to severe inflammation in these regions is associated with a higher probability of sv-cPACNS, with ORs of 5.56 (95CI: 1.02-29.47, p = 0.046) in the cortex and 6.76 (95CI: 1.26-36.11, p = 0.025) in white matter. CD3, CD4, CD8, and CD20 cells predominated the inflammatory infiltrate. Reactive endothelium was strongly associated with sv-cPACNS, with an OR of 8.93 (p = 0.001). Features reported in adult sv-PACNS, including granulomas, necrosis, or fibrin deposits, were absent in all biopsies. The presence of leptomeningeal inflammation in isolation was non-diagnostic.

CONCLUSION: Distinct histological features were identified in sv-cPACNS biopsies, including moderate to severe angiocentric inflammatory infiltrates in the cortex or white matter, consisting of CD3, CD4, CD8, and CD20 cells, alongside reactive endothelium with specificity of 95%. In the first study of its kind proposing histological criteria for evaluating brain biopsies, we aim to precisely characterize the type and severity of the inflammatory response in patients with sv-cPACNS; this can enable consolidation of this population to assess outcomes and treatment methodologies comprehensively.

PMID:39732702 | DOI:10.1186/s12969-024-01053-4

BioData Min. 2024 Dec 28;17(1):61. doi: 10.1186/s13040-024-00413-w.

ABSTRACT

BACKGROUND: Epistasis, the phenomenon where the effect of one gene (or variant) is masked or modified by one or more other genes, significantly contributes to the phenotypic variance of complex traits. Traditionally, epistasis has been modeled using the Cartesian epistatic model, a multiplicative approach based on standard statistical regression. However, a recent study investigating epistasis in obesity-related traits has identified potential limitations of the Cartesian epistatic model, revealing that it likely only detects a fraction of the genetic interactions occurring in natural systems. In contrast, the exclusive-or (XOR) epistatic model has shown promise in detecting a broader range of epistatic interactions and revealing more biologically relevant functions associated with interacting variants. To investigate whether the XOR epistatic model also forms distinct network structures compared to the Cartesian model, we applied network science to examine genetic interactions underlying body mass index (BMI) in rats (Rattus norvegicus).

RESULTS: Our comparative analysis of XOR and Cartesian epistatic models in rats reveals distinct topological characteristics. The XOR model exhibits enhanced sensitivity to epistatic interactions between the network communities found in the Cartesian epistatic network, facilitating the identification of novel trait-related biological functions via community-based enrichment analysis. Additionally, the XOR network features triangle network motifs, indicative of higher-order epistatic interactions. This research also evaluates the impact of linkage disequilibrium (LD)-based edge pruning on network-based epistasis analysis, finding that LD-based edge pruning may lead to increased network fragmentation, which may hinder the effectiveness of network analysis for the investigation of epistasis. We confirmed through network permutation analysis that most XOR and Cartesian epistatic networks derived from the data display distinct structural properties compared to randomly shuffled networks.

CONCLUSIONS: Collectively, these findings highlight the XOR model’s ability to uncover meaningful biological associations and higher-order epistasis derived from lower-order network topologies. The introduction of community-based enrichment analysis and motif-based epistatic discovery emphasize network science as a critical approach for advancing epistasis research and understanding complex genetic architectures.

PMID:39732697 | DOI:10.1186/s13040-024-00413-w

Trials. 2024 Dec 28;25(1):853. doi: 10.1186/s13063-024-08688-4.

ABSTRACT

BACKGROUND: Intermediate-high risk pulmonary embolism (PE) carries a significant risk of hemodynamic deterioration or death. Treatment should balance efficacy in reducing clot burden with the risk of complications, particularly bleeding. Previous studies on high-dose, short-term thrombolysis with alteplase (rtPA) showed a reduced risk of hemodynamic deterioration but no change in mortality and increased bleeding complications. Catheter-based techniques, including ultrasound-assisted thrombolysis (USAT), and low-dose thrombolysis may offer reasonable efficacy with lower risk. However, studies comparing these methods have been few. This trial aims to address this gap by randomizing patients to three treatment modalities.

METHODS: Multicenter, randomized trial with 1:1:1 allocation of 210 patients with acute intermediate-high risk PE, excluding those with absolute contraindications to thrombolysis. Patients are eligible for inclusion if they are > 18 years of age, have had symptoms < 14 days, and are able to give informed consent. Patients are allocated 1:1:1 into three treatment strategies: (1) unfractionated heparin (UFH)/low molecular weight heparin (LMWH), (2) UFH/LMWH + 20 mg rtPA/6 h intravenously (IV), or (3) UFH + 20 mg rtPA/6 h via USAT. Co-primary outcomes include reduction in clot burden as assessed by refined Miller score from pre-treatment to follow-up (48-96 h) computed tomography pulmonary angiogram (CTPA) comparing low-dose rtPA (± USAT) groups to UFH/LMWH group (p < 0.01, N = 210) and reduction in refined Miller score on follow-up CT angiography comparing low-dose rtPA by USAT to intravenous rtPA, p < 0.04, N = 140). Secondary outcomes comprise bleeding complications, duration of index admission, FiO₂, blood pressure, respiratory and heart rate at the time of follow-up CT angiography, mortality in the three groups, incidence of tricuspid regurgitation pressure gradient < 40 mmHg at 3 months follow-up echocardiography, 6-min walk test at 3 months comparing the three groups, and health-related quality of life at 3 months follow-up comparing the three groups.

DISCUSSION: We hypothesize that in patients with intermediate-high risk PE (1) administration of 20 mg rtPA leads to a greater reduction in clot burden compared to heparins and (2) administration of 20 mg rtPA via USAT results in a greater reduction in clot burden compared to 20 mg rtPA intravenous.

TRIAL REGISTRATION: ClinicalTrials.gov NCT04088292. Registered in September 2019 (retrospectively registered).

PMID:39732696 | DOI:10.1186/s13063-024-08688-4

BMC Nutr. 2024 Dec 28;10(1):165. doi: 10.1186/s40795-024-00976-1.

ABSTRACT

BACKGROUND: Experimental and clinical studies have suggested that symbiotics might effectively manage type 2 diabetes mellitus (T2DM) by modulating the intestinal microbiota. However, these studies’ limited sources, small sample sizes, and varied study designs have led to inconsistent outcomes regarding glycaemic control. This study aimed to investigate the effects of symbiotics on the anthropometric measures, glycaemic control, and lipid profiles of patients with T2DM.

METHODS: A double-blind, placebo-controlled, parallel clinical trial was conducted at two diabetes outpatient clinics. The main researcher and participants were blinded to the capsule content throughout the study. Sixty-six patients with T2DM aged 30-75 years were randomly allocated, using even and odd numbers, into two equal groups. These groups received either symbiotic capsules containing 200 million colony-forming units plus fructo-oligosaccharide or a placebo for 12 weeks. The primary objective was a decrement in glycated haemoglobin [HbA1c]. The patients’ anthropometric measures, fasting blood sugar, high-density lipoprotein [HDL], low-density lipoprotein [LDL], total serum cholesterol and serum triglyceride levels were also assessed at baseline and after 12 weeks of intervention. Non-parametric tests were used for statistical analyses.

RESULTS: Within-group analysis revealed significant decreases in body mass index (BMI) and waist circumference (P = 0.005 and 0.023, respectively) and a significant increase in HDL levels in the symbiotic group (P = 0.04). HbA1c levels significantly increased in the placebo group (P = 0.016) but were not significantly reduced in the symbiotic group. The between-group analysis revealed significantly lower fasting blood sugar (FBS) levels in the symbiotic group, and higher in the placebo group (P = 0.02). No significant changes existed in total serum cholesterol, LDL, and triglyceride levels in either the symbiotic or placebo group.

CONCLUSIONS: Symbiotics improve BMI, waist circumference, HDL, and FBS levels and prevent the worsening of HbA1c levels in patients with T2DM. Our preliminary results indicate the potential benefits of symbiotics in patients with T2DM, which may lead to better diabetes control. However, this evidence requires further assessment in larger trials.

TRIAL REGISTRATION: The trial was registered retrospectively at the International Standard Registered Clinical/Social Study Number Registry (ISRCTN34652973) on 05/01/2024.

PMID:39732694 | DOI:10.1186/s40795-024-00976-1

BMC Pediatr. 2024 Dec 28;24(1):842. doi: 10.1186/s12887-024-05340-7.

ABSTRACT

BACKGROUND: Despite progress made towards SDG 3, sub-Saharan Africa lags behind the rest of the world, accounting for over 50% of global neonatal deaths. The increased number of hospital births in the region has not reciprocated the reduction in neonatal mortality rates. Sick newborns face uncertain journeys from peripheral facilities to specialized centres arriving in suboptimal conditions, which impacts their outcomes, due partly to the scarcity of dedicated neonatal transport services.

METHODS: This was a 2-arm nonrandomized controlled cluster study of preterm and low-birth-weight neonates transferred from eight peripheral sites to a tertiary neonatal unit via conventional methods or the KMC (August 2022-April 2023).

RESULTS: A total of 77 (mother-baby pairs) were recruited, 34 in the KMC group and 43 in the conventional arm. Most (60%) were transported by taxis/private cars. Overall mortality was 20.8%. No untoward event was recorded for neonates transported by KMC, with marginally better temperatures on arrival. Although the observed differences were not statistically significant given that this was not the primary aim, the findings add to evidence that KMC transport may not be more life-threatening than the current practice of transporting newborns in the caregiver’s arms. KMC transport has the added advantage of ensuring non-separation of the small and sick child from its mother from birth and improved temperatures upon arrival.

CONCLUSION: KMC transport for preterm and Low birth weight infants using available transport in Sub-Saharan Africa is feasible. Local large-scale randomized trials are needed to gather more evidence for policy direction needed to inform a scale-up of this low-cost intervention.

TRIAL REGISTRATION: ISRCTN98748162. Retrospectively registered 02.09.2024.

PMID:39732693 | DOI:10.1186/s12887-024-05340-7

Head Face Med. 2024 Dec 28;20(1):72. doi: 10.1186/s13005-024-00476-4.

ABSTRACT

Growth-differentiation factor 15 (GDF-15) is a cytokine involved in cellular stress responses and inflammation. This meta-analysis evaluates the association between circulating GDF-15 levels and functional outcomes in patients with acute ischemic stroke (AIS). A comprehensive search of Medline, Web of Science, Embase, Wanfang, and CNKI was conducted up to July 15, 2024. Observational studies with longitudinal follow-up that measured GDF-15 levels within 24 h of stroke onset and reported functional outcomes, defined as a modified Rankin Scale (mRS) score of ≥ 2, were included. Odds ratios (OR) with 95% confidence intervals (CI) were used to quantify associations. Heterogeneity was evaluated using I² statistics, and a random-effects model was used to pool the results by incorporating the influence of heterogeneity. Ten studies involving 4,231 patients were included. The pooled OR indicated that high circulating GDF-15 levels were associated with a significantly higher risk of poor functional outcomes at 3 months (OR: 2.60, 95% CI: 1.95 to 3.46, p < 0.001). Sensitivity analyses by excluding one study at a time did not significantly change the results. Subgroup analyses revealed stronger associations in studies with GDF-15 cutoff values < 1200 ng/L as compared to ≥ 1200 ng/L, and in those defining poor outcomes as mRS ≥ 3 as compared to those ≥ 2. In conclusion, elevated circulating GDF-15 levels are associated with worse functional outcomes following AIS. These findings support the potential use of GDF-15 as a prognostic biomarker in stroke patients. Further research is warranted to confirm these results and explore clinical applications.

PMID:39732689 | DOI:10.1186/s13005-024-00476-4