Category: Nevin Manimala

Clin Ophthalmol. 2023 Nov 29;17:3663-3672. doi: 10.2147/OPTH.S439287. eCollection 2023.

ABSTRACT

PURPOSE: To collate the accuracy of two recently introduced intraocular lens (IOL) formulas (VRF and VRF-G) in cataract patients using a swept-source optical coherence tomography (SS-OCT) biometry (IOL Master 700, Carl Zeiss Meditec AG, Jena, Germany).

PATIENTS AND METHODS: Data records of 295 eyes from 295 patients were included in this scrutiny. The IOLMaster 700 SS-OCT biometer was used for biometric measurements. The VRF and VRF-G formulas were compared with seven 3rd and 4th generation thin and thick-lens formulas: Haigis, Hoffer Q, Holladay 1, Holladay 2, SRK/T, T2, and Barrett Universal II. With optimized lens constants, the mean prediction error (PE) and its standard deviation (SD), the median absolute error (MedAE), the mean absolute error (MAE), and the percentage of eyes with PEs within ±0.25 D, ±0.50 D, ±0.75 D, ±1.00 D, and <±2.00 D were analyzed.

RESULTS: Statistically significant differences were found between formulas in the whole group (Friedman test, P = 0.000). The VRF-G and Haigis formulas showed the lowest SD values (0.464 D and 0.466 D respectively). The VRF and Barrett Universal II formulas were less predictable (SD 0.471 D and SD 0.474 D respectively). The biggest proportion of eyes within ±0.50 D was found with VRF-G (76.27%), Haigis (75.59%), VRF (74.92%), and Barrett Universal II (74.92%) formulas.

CONCLUSION: Based on data achieved from the SS-OCT biometry, the VRF-G and Haigis methods were the more precise predictors of postoperative refraction with the biggest proportion of eyes within ±0.50 D.

PMID:38050557 | PMC:PMC10693751 | DOI:10.2147/OPTH.S439287

Int J Sports Phys Ther. 2023 Dec 1;18(6):1308-1319. doi: 10.26603/001c.89273. eCollection 2023.

ABSTRACT

BACKGROUND: Injuries during elite level competition like the Canada Games, occur frequently and injury history is one of the strongest predictors of future injury; however, this association is unknown in the Canada Games.

PURPOSE: To determine the association between injury history and incidence of lower extremity joint injury during Canada Games competition.

METHODS: Data from the 2009 – 2019 Canada Games (8710 male and 8391 female athletes) competitions were de-identified by the Canada Games Council for analysis. Injury data were cleaned and categorized for previous injury and injury type and location. Injury history was self-reported and included concussion, major surgical procedure, neck and back, trauma to joint or bone, and trauma to ligament or tendon. Injury from the Canada Games competitions were categorized to include ankle, knee, hip, and patellofemoral joint injuries. Chi-Square (χ² ) test of independence determined association between injury history and incidence of lower extremity joint injury during Canada Games competition. IBM SPSS (Version 26) was used for statistical analysis (p-value < 0.05).

RESULTS: Four hundred and seventy-five ankle, 503 knee, 253 hip, and 106 patellofemoral joint injuries were reported during 10 years of Canada Games competitions. There were significant associations between history of neck and back injuries with ankle injuries and knee injuries, history of trauma and overuse of ligament or tendon with hip injuries and history of trauma or overuse of joint or bone with patellofemoral joint injuries.

CONCLUSION: These findings support previous literature suggesting that injury history is associated with future injury.

LEVEL OF EVIDENCE: 3.

PMID:38050547 | PMC:PMC10693481 | DOI:10.26603/001c.89273

Biol Rev Camb Philos Soc. 2023 Dec 4. doi: 10.1111/brv.13034. Online ahead of print.

ABSTRACT

Genetic data show that many nominal species are composed of more than one biological species, and thus contain cryptic species in the broad sense (including overlooked species). When ignored, cryptic species generate confusion which, beyond biodiversity or vulnerability underestimation, blurs our understanding of ecological and evolutionary processes and may impact the soundness of decisions in conservation or medicine. However, very few hypotheses have been tested about factors that predispose a taxon to contain cryptic or overlooked species. To fill this gap, we surveyed the literature on free-living marine metazoans and built two data sets, one of 187,603 nominal species and another of 83 classes or phyla, to test several hypotheses, correcting for sequence data availability, taxon size and phylogenetic relatedness. We found a strong effect of scientific history: the probability of a taxon containing cryptic species was highest for the earliest described species and varied among time periods potentially consistently with an influence of prevailing scientific theories. The probability of cryptic species being present was also increased for species with large distribution ranges. They were more frequent in the north polar and south polar zones, contradicting previous predictions of more cryptic species in the tropics, and supporting the hypothesis that many cryptic species diverged recently. The number of cryptic species varied among classes, with an excess in hydrozoans and polychaetes, and a deficit in actinopterygians, for example, but precise class ranking was relatively sensitive to the statistical model used. For all models, biological traits, rather than phylum, appeared responsible for the variation among classes: there were fewer cryptic species than expected in classes with hard skeletons (perhaps because they provide good characters for taxonomy) and image-forming vision (in which selection against heterospecific mating may enhance morphological divergence), and more in classes with internal fertilisation. We estimate that among marine free-living metazoans, several thousand additional cryptic species complexes could be identified as more sequence data become available. The factors identified as important for marine animal cryptic species are likely important for other biomes and taxa and should aid many areas in biology that rely on accurate species identification.

PMID:38049930 | DOI:10.1111/brv.13034

Rural Remote Health. 2023 Dec;23(4):8372. doi: 10.22605/RRH8372. Epub 2023 Dec 5.

ABSTRACT

INTRODUCTION: The US is currently experiencing a maternal health crisis. Maternal morbidity and mortality in the US are higher than in other developed nations and continue to rise. Infant mortality, likewise, is higher in the US than in other developed nations. Limited availability of maternal health services, particularly in rural areas, contributes to this crisis. Maternal health outcomes are poorer, and maternal care workforce shortages are more severe in rural areas of the US. In rural areas where obstetric specialists are rare, many patients rely on family medicine physicians for maternity care. However, the number of family medicine physicians who provide maternal care services is decreasing, aggravating shortages. Calls have been made to build maternal care capacity in rural areas. The role family medicine will play in addressing the maternal health crisis is not clear. Maternal care shortages are complex issues resulting from multiple factors; likewise, efforts to build maternal health capacity are challenging and require multifaceted approaches.

METHODS: With funding from the Health Resources and Services Administration (HRSA), the University of Utah seeks to address the shortage of quality maternity care in rural and underserved areas of Utah by strengthening partnerships, enhancing maternal care training of family medicine residents and obstetrics fellows, and improving the transition from training to rural practice for residents and fellows. This protocol describes the evaluation of the HRSA-funded project. The evaluation includes three components. Component 1 consists of qualitative interviews with a diverse group of maternal health providers, administrators, educators and academics, patients, and others. Interviews will be analyzed using qualitative content analysis. Component 2 is a survey of family medicine residents and obstetrics fellows, which aims to increase understanding of the factors and circumstances influencing intention to practice in rural or underserved areas and to provide maternal health services. Component 3 involves surveying fellowship alumni and tracking graduates to assess effectiveness of training programs in producing physicians who provide maternal health services in rural and underserved areas. Surveys will be analyzed with descriptive statistics including means, frequencies, and cross-tabulations. If sample size and participation provide sufficient power, statistical tests will be included in analyses.

RESULTS: Evaluation results will help to fill an important gap in research literature concerning outcomes of projects and initiatives designed to build maternal care capacity in rural areas of the US. In addition, results will provide valuable information regarding effective practices for building capacity, which can be adopted elsewhere to address maternal care shortages. Finally, results will help to define the role of family medicine in addressing the maternal health crisis. Amid maternal care shortages, fewer and fewer family medicine physicians are providing maternal care in their practice. Evaluation results will clarify the role of training and preparation of family medicine residents in addressing workforce shortages.

CONCLUSION: This evaluation will provide important contributions, but additional research is needed, including research protocols and studies of project outcomes, to understand how best to resolve the maternal care crisis in the US.

PMID:38049929 | DOI:10.22605/RRH8372

Trop Dis Travel Med Vaccines. 2023 Dec 5;9(1):21. doi: 10.1186/s40794-023-00207-8.

ABSTRACT

BACKGROUND: International Health Regulations (IHR) were developed by the World Health Organization (WHO) to curb the trans-border spread of epidemics. To our knowledge, no airport-based studies have assessed travelers’ health practices against a combination of diseases subject to IHR 2005. Therefore, we aimed to generate and describe the baseline travelers’ pre-travel health practices towards Cholera, Yellow Fever (YF), and Plague at Murtala Muhammed International Airport (MMIA) in Nigeria.

METHODS: A cross-sectional study was employed to collect data from 486 international travelers using a multistage sampling technique. Pre-travel health practices (a combination of pre-travel consultation, pre-travel vaccination, and preventive measures against insect bites) were assessed using an interviewer-administered questionnaire. Logistic regression models were used to estimates the association between selected variables and pre-travel health practices. Statistical significance level was set at 5%.

RESULTS: A total of 479 complete questionnaires were analyzed. The median age of respondents was 34.0 years Interquartile range (IQR) = 28.0, 44.0). Of the total respondents, 311 (64.3%) were aware of pre-travel health consultation and sources of information, amongst others, including friends/relatives in 180 (37.6%) travelers, social media/internet in 155 (32.4%) travelers, and health professionals in 102 (21.3%) travelers. Two hundred and seventy-one (56.6%) had pre-travel consultation, 156 (32.6%) had YF vaccination, and 226 (47.2%) were prepared to use preventive measures against insect bites. Only 10.6% had good pre-travel practices against the diseases subject to 2 International Health Regulations (IHR). Travelers with bachelor/college degrees, when compared to those with secondary/high education, had 2.91 times higher odds of having good practices when adjusting for other factors (95% C.I: 1.10, 7.70; p < 0.03). Also, those traveling to destinations endemic for YF infection, when compared to those who are not traveling to endemic countries/areas, had 48% lower odds of having good practices after adjusting for other factors (95% C.I: 1.41, 7.77; p < 0.01).

CONCLUSIONS: Our study revealed a low prevalence of good pre-travel health practices among participants. Educational level and endemicity of YF at the destination were predictors of pre-travel health practices. Introducing topics on travelers’ health into schools’ curriculums may have a ripple positive effect on health practices among international travelers. Also, there is a need for public enlightenment programs on pre-travel health practices using social media platforms.

PMID:38049921 | DOI:10.1186/s40794-023-00207-8

Adv Rheumatol. 2023 Dec 4;63(1):57. doi: 10.1186/s42358-023-00329-9.

ABSTRACT

BACKGROUND: Many people with non-specific chronic low back pain (NSCLBP) do not recover with current conventional management. Systematic reviews show multidimensional treatment improves pain better than usual active interventions. It is unclear whether multidimensional physiotherapy improves pain better than usual physiotherapy. This study determines the effectiveness of this treatment to reduce pain and disability and improve quality of life, pain cognitions, and electroencephalographic pattern in individuals with NSCLBP.

METHODS: 70 eligible participants aged 18 to 50 years with NSCLBP were randomized into either the experimental group (multidimensional physiotherapy) or the active control group (usual physiotherapy). Pain intensity was measured as the primary outcome. Disability, quality of life, pain Catastrophizing, kinesiophobia, fear Avoidance Beliefs, active lumbar range of motion, and brain function were measured as secondary outcomes. The outcomes were measured at pre-treatment, post-treatment, 10, and 22 weeks. Data were analyzed using intention-to-treat approaches.

RESULTS: There were 17 men and 18 women in the experimental group (mean [SD] age, 34.57 [6.98] years) and 18 men and 17 women in the active control group (mean [SD] age, 35.94 [7.51] years). Multidimensional physiotherapy was not more effective than usual physiotherapy at reducing pain intensity at the end of treatment. At the 10 weeks and 22 weeks follow-up, there were statistically significant differences between multidimensional physiotherapy and usual physiotherapy (mean difference at 10 weeks, -1.54; 95% CI, -2.59 to -0.49 and mean difference at 22 weeks, -2.20; 95% CI, – 3.25 to – 1.15). The standardized mean difference and their 95% confidence intervals (Cohen’s d) revealed a large effect of pain at 22 weeks: (Cohen’s d, -0.89; 95% CI (-1.38 to-0.39)). There were no statistically significant differences in secondary outcomes.

CONCLUSIONS: In this randomized controlled trial, multidimensional physiotherapy resulted in statistically and clinically significant improvements in pain compared to usual physiotherapy in individuals with NSCLBP at 10 and 22 weeks.

TRIAL REGISTRATION: ClinicalTrials.gov NCT04270422; IRCT IRCT20140810018754N11.

PMID:38049905 | DOI:10.1186/s42358-023-00329-9

Trials. 2023 Dec 4;24(1):785. doi: 10.1186/s13063-023-07784-1.

ABSTRACT

BACKGROUND: Irritable bowel syndrome (IBS) is a highly prevalent disorder for which treatment options such as medication, diets, and hypnotherapy either have shown limited effect or relieve symptoms in only a limited subset of patients. Abdominal pain is the key criterion for the diagnosis and is deemed the most distressing IBS symptom, and the most disruptive of everyday life. A growing body of research demonstrates the effect of Eye Movement Desensitization and Reprocessing (EMDR) on chronic pain. EMDR is known as a safe and successful treatment for disorders in which unresolved traumatic memories play a role in the cause or maintenance of symptoms. In IBS, activated memories may increase pain through pain flashbacks and the stress generated by unresolved memories. The aim of this study is to ascertain whether applying EMDR to traumatic memories including pain memories will reduce abdominal pain in IBS patients.

METHODS: This study is a randomized controlled trial which will be conducted at a city hospital in the Netherlands. Adult patients with considerable IBS pain (pain intensity at least 60/100 during at least 5/10 days) will be randomly assigned to either EMDR therapy or the wait list. We aim to include 34 participants. The EMDR condition comprises seven sessions, around 90 min in length delivered weekly, the first of which is a case conceptualization session. All participants will be assessed at baseline, post-treatment, and at 3 months follow-up. The primary outcome measure is pain intensity on a Likert scale which is self-reported daily during a 2-week period. Secondary outcomes include similar daily ratings on other IBS symptoms and reported hindrance of valued activities, and also standardized questionnaires on IBS symptoms and Quality of Life. Data will be analyzed by a Linear Mixed Effects Model for repeated measures.

DISCUSSION: The results are expected to gain insight into the effectiveness of EMDR treatment on abdominal pain in IBS. As there are very few effective treatment options for IBS-related abdominal pain, this study could have important implications for clinical practice.

TRIAL REGISTRATION: Human ethics committee MEC-U NL71740.100.20. International Clinical Trial Registry Platform: NL8894. Prospectively registered on 28 January 2020.

PMID:38049872 | DOI:10.1186/s13063-023-07784-1

Fluids Barriers CNS. 2023 Dec 4;20(1):90. doi: 10.1186/s12987-023-00494-5.

ABSTRACT

BACKGROUND: The lack of accessible and informative biomarkers results in a delayed diagnosis of Parkinson’s disease (PD), whose symptoms appear when a significant number of dopaminergic neurons have already disappeared. The retina, a historically overlooked part of the central nervous system (CNS), has gained recent attention. It has been discovered that the composition of cerebrospinal fluid influences the aqueous humor composition through microfluidic circulation. In addition, alterations found in the brain of patients with PD have a correlate in the retina. This new paradigm highlights the potential of the aqueous humor as a sample for identifying differentially concentrated metabolites that could, eventually, become biomarkers if also found altered in blood or CSF of patients. In this research we aim at analyzing the composition of the aqueous humor from healthy controls and PD patients.

METHODS: A targeted metabolomics approach with concentration determination by mass spectrometry was used. Statistical methods including principal component analysis and linear discriminants were used to select differentially concentrated metabolites that allow distinguishing patients from controls.

RESULTS: In this first metabolomics study in the aqueous humor of PD patients, elevated levels of 16 compounds were found; molecules differentially concentrated grouped into biogenic amines, amino acids, and acylcarnitines. A biogenic amine, putrescine, alone could be a metabolite capable of differentiating between PD and control samples. The altered levels of the metabolites were correlated, suggesting that the elevations stem from a common mechanism involving arginine metabolism.

CONCLUSIONS: A combination of three metabolites, putrescine, tyrosine, and carnitine was able to correctly classify healthy participants from PD patients. Altered metabolite levels suggest altered arginine metabolism. The pattern of metabolomic disturbances was not due to the levodopa-based dopamine replacement medication because one of the patients was not yet taking levodopa but a dopamine receptor agonist.

PMID:38049870 | DOI:10.1186/s12987-023-00494-5

Head Face Med. 2023 Dec 4;19(1):52. doi: 10.1186/s13005-023-00388-9.

ABSTRACT

OBJECTIVES: This study aimed to investigate vertical changes in the maxillary central incisor and the maxillary first molar, along with alterations in the mandibular plane angle during space closure using miniscrew sliding mechanics.

METHODS: Twenty adult patients treated at Peking University Hospital of Stomatology between 2008 and 2013 were included. Digital dental models and craniofacial cone-beam computed tomography (CBCT) scans were obtained at the start of treatment (T0) and immediately after space closure (T1). Stable miniscrews were used for superimposing maxillary digital dental models (T0 and T1), and vertical changes in the maxillary first molar and the maxillary central incisor were measured. Three-dimensional changes in the mandibular plane were assessed through CBCT superimposition.

RESULTS: The maxillary central incisor exhibited an average extrusion of 2.56 ± 0.18 mm, while the maxillary first molar showed an average intrusion of 1.25 ± 1.11 mm with a distal movement of 0.97 ± 0.99 mm. Additionally, the mandibular plane angle decreased by an average of 0.83 ± 1.65°. All three indices exhibited statistically significant differences.

CONCLUSION: During space closure using the miniscrew sliding technique, significant changes occurred in both the sagittal and vertical dimensions of the upper dentition. This included extrusion of the maxillary central incisors, intrusion of the maxillary first molars, and a slight counterclockwise rotation of the mandibular plane.

PMID:38049867 | DOI:10.1186/s13005-023-00388-9

Genome Med. 2023 Dec 4;15(1):108. doi: 10.1186/s13073-023-01263-7.

ABSTRACT

BACKGROUND: In vitro and in vivo studies have shown that certain cytokines and hormones may play a role in the development and progression of type 2 diabetes (T2D). However, studies on their role in T2D in humans are scarce. We evaluated associations between 11 circulating cytokines and hormones with T2D among a population of sub-Saharan Africans and tested for causal relationships using Mendelian randomization (MR) analyses.

METHODS: We used logistic regression analysis adjusted for age, sex, body mass index, and recruitment country to regress levels of 11 cytokines and hormones (adipsin, leptin, visfatin, PAI-1, GIP, GLP-1, ghrelin, resistin, IL-6, IL-10, IL-1RA) on T2D among Ghanaians, Nigerians, and Kenyans from the Africa America Diabetes Mellitus study including 2276 individuals with T2D and 2790 non-T2D individuals. Similar linear regression models were fitted with homeostatic modelling assessments of insulin sensitivity (HOMA-S) and β-cell function (HOMA-B) as dependent variables among non-T2D individuals (n = 2790). We used 35 genetic variants previously associated with at least one of these 11 cytokines and hormones among non-T2D individuals as instrumental variables in univariable and multivariable MR analyses. Statistical significance was set at 0.0045 (0.05/11 cytokines and hormones).

RESULTS: Circulating GIP and IL-1RA levels were associated with T2D. Nine of the 11 cytokines and hormones (exceptions GLP-1 and IL-6) were associated with HOMA-S, HOMA-B, or both among non-T2D individuals. Two-stage least squares MR analysis provided evidence for a causal effect of GIP and IL-RA on HOMA-S and HOMA-B in multivariable analyses (GIP ~ HOMA-S β = – 0.67, P-value = 1.88 × 10^-6 and HOMA-B β = 0.59, P-value = 1.88 × 10^-5; IL-1RA ~ HOMA-S β = – 0.51, P-value = 8.49 × 10^-5 and HOMA-B β = 0.48, P-value = 5.71 × 10^-4). IL-RA was partly mediated via BMI (30-34%), but GIP was not. Inverse variance weighted MR analysis provided evidence for a causal effect of adipsin on T2D (multivariable OR = 1.83, P-value = 9.79 × 10^-6), though these associations were not consistent in all sensitivity analyses.

CONCLUSIONS: The findings of this comprehensive MR analysis indicate that circulating GIP and IL-1RA levels are causal for reduced insulin sensitivity and increased β-cell function. GIP’s effect being independent of BMI suggests that circulating levels of GIP could be a promising early biomarker for T2D risk. Our MR analyses do not provide conclusive evidence for a causal role of other circulating cytokines in T2D among sub-Saharan Africans.

PMID:38049854 | DOI:10.1186/s13073-023-01263-7