Tag: nevin manimala

Mol Imaging Radionucl Ther. 2023 Jun 20;32(2):138-145. doi: 10.4274/mirt.galenos.2022.68094.

ABSTRACT

OBJECTIVES: We aimed to investigate and compare the role of computed tomography (CT)-based attenuation-corrected images (AC) with non-attenuation-corrected images (NAC) obtained by single-photon emission computed tomography/computed tomography (SPECT/CT) myocardial perfusion imaging (MPI).

METHODS: The data of 124 patients who were applied one-day stress-rest Tc-99m sestamibi SPECT/CT MPI and who had coronary angiography (CAG) results within ±3 months were retrospectively reviewed. AC and NAC images were visually evaluated by two nuclear medicine specialists in a consensus. CAG results were used as the reference standard.

RESULTS: Specificity, sensitivity, and accuracy were calculated as 66%, 61%, 71%, 79% and 69%, 70% for AC and NAC imaging in the whole group, respectively. There was no statistically significant difference between AC and NAC images for specificity, sensitivity, and accuracy in the male and female subgroups. In the diagnosis of right coronary artery (RCA) disease, CT AC significantly increased the specificity from 87% to 96%. However, in the left anterior descending artery (LAD) region, the specificity was significantly reduced from 95% to 77%.

CONCLUSION: CT-based AC did not significantly contribute to diagnostic performance for increased specificity for the RCA and reduced specificity in the LAD region. Therefore, AC images should always be evaluated side by side with NAC images to benefit from the different advantages of both techniques.

PMID:37337825 | DOI:10.4274/mirt.galenos.2022.68094

Afr J AIDS Res. 2023 Jun 20:1-11. doi: 10.2989/16085906.2023.2203128. Online ahead of print.

ABSTRACT

In Eswatini (formerly Swaziland), the increasing number of orphans and vulnerable children due to HIV/AIDS has spurred demand for psychosocial support services. When the Ministry of Education and Training assumed responsibility for delivering psychosocial support, educators were burdened with the additional role of looking after orphans and vulnerable learners. This exploratory, sequential, mixed-methods study was employed to analyse factors that enhance the provision of psychosocial support services and the perceptions of educators towards psychosocial support delivery. The qualitative study phase entailed 16 in-depth interviews with multi-sectoral psychosocial support specialists and seven focus group discussions with orphans and vulnerable learners. In the quantitative study phase, 296 educators were surveyed. Thematic analysis was used for the qualitative data, and the quantitative data was analysed using Statistical Package for the Social Sciences version 25 software. The findings reveal problems associated with psychosocial support service delivery at strategy, policy and operational levels. The results indicate that orphans and vulnerable children are offered material support (e.g. food and sanitary pads) and spiritual support, but were rarely referred for social and psychological needs. There were no proper counselling facilities and not all teachers received relevant training in children’s psychosocial needs. Training of educators in specific psychosocial support areas was considered significant to enhance service delivery and the psychosocial well-being of the learners. Overall, accountability was difficult to establish because the administration of psychosocial support is split among the Ministry of Education and Training, the Deputy Prime Minister’s office and Tinkhundla administration. There is unequal distribution of qualified early childhood development teachers to cater for early childhood educational needs.

PMID:37337815 | DOI:10.2989/16085906.2023.2203128

Child Dev. 2023 Jun 20. doi: 10.1111/cdev.13955. Online ahead of print.

ABSTRACT

Adhering to a partially defined plan requires an intentional commitment that curbs distracting desires conflicting with the planned course of action, enabling humans to act coherently over time. Two studies (N = 50, 27 girls, ages 5-6, Han Chinese, in Hangzhou, China, 2022.02-2022.03) explored the development of commitment to partial plans in a sequential decision-making task and the underlying cognitive capacity focusing on its correlation to attentional control. Results suggest that only 6-year-olds committed to partial plans (d = .51), and children’s commitment ratio was positively correlated with the use of proactive control (r = .40). These findings indicate that intentional commitment does not develop simultaneously with intention understanding, but rather matures gradually with the development of attentional control.

PMID:37337790 | DOI:10.1111/cdev.13955

Int J Gynaecol Obstet. 2023 Jun 20. doi: 10.1002/ijgo.14929. Online ahead of print.

ABSTRACT

OBJECTIVE: To assess the association between interpregnancy interval (IPI) and gestational diabetes mellitus (GDM).

METHODS: Data of this retrospective cohort study were obtained from the National Vital Statistics System (NVSS) 2020. The participants were divided into different groups according to different IPI (<6, 6-11, 12-17, 18-23, 24-59 (reference), 60-119, ≥120 months). Multivariate logistic models were constructed to evaluate the association between IPI and GDM. Subgroup analysis was further performed.

RESULTS: A total of 1 515 263 women were included, with 123 951 (8.18%) having GDM. Compared with the 24-59 months group, the <6 months (odds ratio [OR] 0.64, 95% confidence interval [CI] 0.46-0.90, P = 0.009), 12-17 months (OR 0.96, 95% CI 0.94-0.98, P < 0.001), and 18-23 months (OR 0.94, 95% CI 0.93-0.96, P < 0.001) groups had a significantly lower risk of GDM, while the 60-119 months (OR 1.13, 95% CI 1.11-1.15, P < 0.001) and ≥120 months (OR 1.18, 95% CI 1.15-1.21, P < 0.001) groups had a significantly higher risk of GDM. No significant difference was observed in the risk of GDM between the 6-11 and 24-59 months groups (P = 0.542). The PI-GDM association varied across different groups of age, pre-pregnancy body mass index, pre-pregnancy smoking status, history of cesarean section, history of preterm birth, prior terminations, and parity.

CONCLUSION: An IPI of 18-23 months may be a better interval than 24-59 months in managing the risk of GDM.

PMID:37337776 | DOI:10.1002/ijgo.14929

Mol Imaging Radionucl Ther. 2023 Jun 20;32(2):117-122. doi: 10.4274/mirt.galenos.2021.65902.

ABSTRACT

OBJECTIVES: To investigate the added diagnostic value of delayed imaging at 3 and 4 h compared to 2 h imaging as well as scanning up to 4 h compared to 3, and by this means, diagnosis reclassification or changes in diagnosis across various time points.

METHODS: Seventeen patients clinically suspected of gastroparesis, 8 (47.1%) men and 9 (52.9%) women, according to the standard procedural guidelines, underwent gastric emptying scintigraphy after ingesting a standard meal. One-minute static images in anterior and posterior projections were acquired immediately after ingestion and then at 1-, 2-, 3- , and 4 h time points. For image analysis, a manual region-of-interest was drawn, and then, count of stomach in each projection was used to calculate geometric mean for each time point. Decay correction was applied. At 2-, 3- and 4 h time points, percentage of retained activity was compared to standard values; therefore, each patient was labeled as normal or delayed.

RESULTS: Pairwise correlation between time points was statistically significant. Value of hour 3 shows an extremely strong correlation with the value of hour 4 (r=0.951, p<0.001). In hour 2, of 17 participants, 11 (64.7%) were diagnosed as normal and 6 (35.3%) as delayed. In hour 3, the diagnosis made as delayed rose to 9 (52.9%), whereas normal was 8 (47.1%). Finally, in hour 4, results were 10 (58.8%) as delayed and 7 (41.2%) as normal. All subjects who were labeled as delayed in hour 3 remained with the same diagnosis and 1 out of 8 subjects categorized as normal in hour 3 changed to delayed. For testing agreement, coefficient of kappa was computed between each pair. Agreement between diagnosis in hour 2 with hours 3 or 4 was not strong (kappa <0.6 for both pairs). However, a strong agreement was found between diagnosis in hours 3 and 4 (kappa: 0.881).

CONCLUSION: Because of excellent correlation between values of hours 3 and 4 and strong agreement between the diagnosis in those time points, extending acquisition from 3 to 4 h adds little to the final dai gnosis and may not be noticeably meaningful, especially in the clinical setting.

PMID:37337772 | DOI:10.4274/mirt.galenos.2021.65902

Mol Imaging Radionucl Ther. 2023 Jun 20;32(2):112-116. doi: 10.4274/mirt.galenos.2022.05826.

ABSTRACT

OBJECTIVES: The aim of this study was to compare the treatment responses after ablation with 30-50 mCi radioactive iodine (RAI) and 100 mCi RAI in patients with differentiated thyroid cancer (DTC) who were in the low-risk group according to 2015 American Thyroid Associations Classification (ATA 2015) criteria.

METHODS: Between February 2016 and August 2018, 100 patients who received RAI treatment in our clinic after total thyroidectomy and who were in the low-risk group DTC were included in this retrospective study. These patients were divided into 2 groups: low-activity (30-50 mCi) (group 1) and high-activity (100 mCi) (group 2). While 54 patients were treated with low activity, 46 patients received high activity RAI. The 2 groups were compared according to the 1^st– and 3^rd-year treatment response status.

RESULTS: According to the first-year follow-up, 15 patients were accepted as indeterminate response and 85 patients as excellent response. Three (5.5%) of the patients who were accepted as indeterminate response were in group 1 and 12 (26%) were in group 2. According to the third year follow-up, 1 patient in group 1 and 3 patients in group 2 were accepted as indeterminate response. No biochemical incomplete response or recurrent disease was detected. In the chi-square analysis performed to investigate the relationship between the first-year treatment response and RAI activities, a significant relationship was found (p=0.004). In the Mann-Whitney U test performed to investigate the parameters that may be effective in the treatment response, only the preablative serum thyroglobulin value was shown to have a significant difference between the two groups (p=0.01). In the long-term follow-up of the patients, based on the third year treatment response data, chi-square analysis was performed to evaluate the two groups in terms of treatment responses, and no statistically significant relationship was found (p=0.73).

CONCLUSION: Ablation with 30-50 mCi can be safely applied in DTC patients who are in the ATA 2015 low-risk group and are planned for RAI ablation treatment.

PMID:37337764 | DOI:10.4274/mirt.galenos.2022.05826

Brief Bioinform. 2023 Jun 19:bbad230. doi: 10.1093/bib/bbad230. Online ahead of print.

ABSTRACT

The T-cell receptor (TCR) repertoire is highly diverse among the population and plays an essential role in initiating multiple immune processes. TCR sequencing (TCR-seq) has been developed to profile the T cell repertoire. Similar to other high-throughput experiments, contamination can happen during several steps of TCR-seq, including sample collection, preparation and sequencing. Such contamination creates artifacts in the data, leading to inaccurate or even biased results. Most existing methods assume ‘clean’ TCR-seq data as the starting point with no ability to handle data contamination. Here, we develop a novel statistical model to systematically detect and remove contamination in TCR-seq data. We summarize the observed contamination into two sources, pairwise and cross-cohort. For both sources, we provide visualizations and summary statistics to help users assess the severity of the contamination. Incorporating prior information from 14 existing TCR-seq datasets with minimum contamination, we develop a straightforward Bayesian model to statistically identify contaminated samples. We further provide strategies for removing the impacted sequences to allow for downstream analysis, thus avoiding any need to repeat experiments. Our proposed model shows robustness in contamination detection compared with a few off-the-shelf detection methods in simulation studies. We illustrate the use of our proposed method on two TCR-seq datasets generated locally.

PMID:37337757 | DOI:10.1093/bib/bbad230

Diabetes Obes Metab. 2023 Jun 20. doi: 10.1111/dom.15164. Online ahead of print.

ABSTRACT

AIMS: To evaluate the effect of dapagliflozin on body composition such as total body fat (BF) mass, abdominal visceral adipose tissue (VAT), and subcutaneous adipose tissue (SAT) areas compared with glimepiride in Korean patients with type 2 diabetes.

MATERIALS AND METHODS: This was a 52-week, multicentre, randomized, parallel-group, open-label, Phase IV (NCT02564926) study. Patients with inadequate glycaemic control (glycated haemoglobin ≥7.0% and <10.0%) on metformin monotherapy (≥1000 mg/day) were randomized 1:1 to receive dapagliflozin 10 mg/day or glimepiride 1-2 mg/day for 12 months as an add-on to metformin. Baseline and end of study body composition evaluations included dual-energy X-ray absorptiometry and abdominal computed tomography scans.

RESULTS: Of 124 enrolled patients from 14 centres, 121 received study treatment (dapagliflozin: 60; glimepiride: 61) and 106 (85.5%) completed the study. Over 52 weeks, the dapagliflozin group showed the following differences versus the glimepiride group: -2.59 kg BF mass, -1.94% BF%, -17.55 cm² VAT area, -18.39 cm² SAT area, -0.46% glycated haemoglobin, -18.25 mg/dl fasting blood glucose, -3.7 kg weight, -2.21 cm waist circumference, -1.37 kg/m² body mass index, -6.81 mmHg systolic blood pressure and +657.71 ng/ml in adiponectin; all were statistically significant. Both groups had similar incidences of adverse events; however, hypoglycaemic events were mainly (12 of 15) reported in the glimepiride group.

CONCLUSION: Dapagliflozin reduced total BF mass, abdominal VAT and SAT areas, and showed better glycaemic control than glimepiride. Being safe and well-tolerated, dapagliflozin appears to be a more favourable alternative to sulphonylureas as add-on therapy after metformin monotherapy failure in Korean patients with type 2 diabetes.

PMID:37337747 | DOI:10.1111/dom.15164

Minerva Endocrinol (Torino). 2023 Jun 20. doi: 10.23736/S2724-6507.23.03985-4. Online ahead of print.

ABSTRACT

BACKGROUND: The aim of this study is to investigate the use of once-weekly semaglutide in a real population of patients with type 2 diabetes mellitus (T2DM) over 70 years in two Spanish hospitals.

METHODS: An observational, retrospective, and multicenter clinical study was designed. It included 60 patients with T2DM, with a mean age of 76.5 years, 63.3% women, and a mean of 15.5 years of evolution of T2DM, all managed in the outpatient clinical setting. The primary endpoint was the change in HbA<inf>1c</inf> from baseline to the end of the study. The secondary endpoints included changes in body weight and the proportion of patients achieving HbA<inf>1c</inf> <7.0% and body weight loss >5%.

RESULTS: After 12 months of follow-up, the reductions in HbA<inf>1c</inf> were -0.61±0.9% (P<0.0001) in the total cohort. Body weight reductions were -8.2±5.3 kg (P<0.0001). Overall, 67% reached the objective of an HbA<inf>1c</inf> level of <7%, and 73% achieved a weight loss of ≥5%.

CONCLUSIONS: In routine clinical practice in Spain, the use of semaglutide once a week was associated with statistically significant and clinically relevant improvements in HbA<inf>1c</inf> and body weight in adults aged over 70 years with T2DM, without notable adverse effects, which supports real-world use.

PMID:37337740 | DOI:10.23736/S2724-6507.23.03985-4

J Intensive Care Med. 2023 Jun 20:8850666231182563. doi: 10.1177/08850666231182563. Online ahead of print.

ABSTRACT

PURPOSE: Significant increases in the volume of preprint articles due to the COVID-19 pandemic, we examined the reliability of preprint articles compared to their peer-reviewed publications.

MATERIALS AND METHODS: Preprint articles evaluating experimental studies of select treatment options (anticoagulation, dexamethasone, hydroxychloroquine, remdesivir, and tocilizumab) for COVID-19 in the critically ill, available in a peer-reviewed publication were screened for inclusion within Altmetric (n = 2040). A total of 40 articles met inclusion criteria, with 21 being randomly selected for evaluation. The primary outcome of this evaluation was a change in a study’s reported primary outcome or statistical significance between preprint and peer-reviewed articles. Secondary outcomes included changes in primary/secondary outcome effect size and change in study conclusion.

RESULTS: One article (4.8%, 95% CI 0.12%-23.8%) had a change in the primary outcome. Seven articles (33.3%, 95% CI 14.6%-57.0%) had a change in the primary outcome’s effect measure. Five studies (23.8%, 95% CI 8.2%-47.2%) had changes in statistical significance of at least one secondary outcome. Four studies (19.0%, 95% CI 5.4%-41.9%) had a change in study conclusion.

CONCLUSIONS: In preprint articles of COVID-19 treatments, the provided primary outcome is generally reliable, while interpretation of secondary outcomes should be made with caution, while awaiting completion of the peer-review process.

PMID:37337731 | DOI:10.1177/08850666231182563