Browse Articles

Divergent roles of m6A in orchestrating brown and white adipocyte transcriptomes and systemic metabolism

Integrative physiological, biochemical, and proteomic analysis of the leaves of two cotton genotypes under heat stress

Cotton (Gossypium hirsutum L.), a crucial global fibre and oil seed crop faces diverse biotic and abiotic stresses. Among these, temperature stress strongly influences its growth, prompting adaptive physiological, biochemical, and molecular changes. In this study, we explored the proteomic changes underscoring the heat stress tolerance in the leaves of two locally developed cotton genotypes, i.e., heat tolerant (GH-Hamaliya Htol) and heat susceptible (CIM-789 Hsus), guided by morpho-physiological and biochemical analysis. These genotypes were sown at two different temperatures, control (35°C) and stress (45°C), in a glasshouse, in a randomized complete block design (RCBD) in three replications. At the flowering stage, a label-free quantitative shotgun proteomics of cotton leaves revealed the differential expression of 701 and 1270 proteins in the tolerant and susceptible genotypes compared to the control, respectively. Physiological and biochemical analysis showed that the heat-tolerant genotype responded uniquely to stress by maintaining the net photosynthetic rate (Pn) (25.2–17.5 μmolCO2m-2S-1), chlorophyll (8.5–7.8mg/g FW), and proline contents (4.9–7.4 μmole/g) compared to control, supported by the upregulation of many proteins involved in several pathways, including photosynthesis, oxidoreductase activity, response to stresses, translation, transporter activities, as well as protein and carbohydrate metabolic processes. In contrast, the distinctive pattern of protein downregulation involved in stress response, oxidoreductase activity, and carbohydrate metabolism was observed in susceptible plants. To the best of our knowledge, this is the first proteomic study on cotton leaves that has identified more than 8000 proteins with an array of differentially expressed proteins responsive to the heat treatment that could serve as potential markers in the breeding programs after further experimentation.

Talquetamab plus Teclistamab in Relapsed or Refractory Multiple Myeloma

A scaling law to model the effectiveness of identification techniques

AbstractAI techniques are increasingly being used to identify individuals both offline and online. However, quantifying their effectiveness at scale and, by extension, the risks they pose remains a significant challenge. Here, we propose a two-parameter Bayesian model for exact matching techniques and derive an analytical expression for correctness (κ), the fraction of people accurately identified in a population. We then generalize the model to forecast how κ scales from small-scale experiments to the real world, for exact, sparse, and machine learning-based robust identification techniques. Despite having only two degrees of freedom, our method closely fits 476 correctness curves and strongly outperforms curve-fitting methods and entropy-based rules of thumb. Our work provides a principled framework for forecasting the privacy risks posed by identification techniques, while also supporting independent accountability efforts for AI-based biometric systems.

Disability and pain after lumbar surgery–group-based trajectory analysis

Background and aims Previous studies in lumbar spine surgery have mainly studied functioning and pain by comparing average scores from Patient Reported Outcome Measures (PROMs) at different time points. Less is known about these changes in different subgroups. It is self-evident that, while most patients may demonstrate trajectories of these changes close to the average one, some groups may follow more or less different trends. Also, it is unclear which preoperative factors may affect the probability of being classified into groups with different development trajectories of surgical outcome. The objective of this study was to identify groups exhibiting distinct trajectories within the broader cohort of patients undergoing lumbar spine surgery and to determine whether certain factors may be associated with a probability of being classified into a particular group. Methods This was a register-based study of 1,451 patients undergoing lumbar spine surgery. The group-based trajectory analysis was used separately for leg pain, for back pain, and for functioning. The probability of group membership was calculated based on sex, age, leg and back pain duration before surgery, and obesity. Results Two kinds of group-based trajectories were identified for each of three-factor variables: a long-term and a short-term improvement group. Sex and age were not associated with being classified into short-term improvement groups, but obesity was associated for all three-factor variables with relative risk ratios (RRR) varying from 1.26 (95% CI 1.02 to 1.56) to 1.45 (95% CI 1.10 to 1.90). Preoperative leg and back pain duration was significantly associated solely with back pain severity with an RRR of 1.28 (95% CI 1.01 to 1.61). Conclusions The results of this study suggest that most of the patients may experience pain relief and improved functioning within three months after lumbar surgery, and this effect may last, at least, for two years. Higher BMI and worse preoperative pain and disability were associated with the inferior outcome of surgery. When considering surgery, planning pre- and postoperative rehabilitation, or forecasting the use of pain medications, a higher probability of worse outcome could be expected for overweight and initially more painful patients with higher level of disability.

Reducing the Risk of Pancreatitis by Inhibiting APOC3

High-temperature field-free superconducting diode effect in high-Tc cuprates

The experience of living with human immunodeficiency virus among adolescents at Felege Hiwot Comprehensive Specialized Hospital Bahir-Dar, Northwest Ethiopia, A phenomenological study

Background Adolescents who have the human immunodeficiency virus face difficulties in their lives not just from the physical consequences of the illness but also from social stigma and discrimination. The quantitative side of this issue was the focus of earlier Ethiopian research. However, there hasn’t been any prior research done extensively in Ethiopia on the real-life experiences of teenagers infected with HIV. Therefore, in order to address the real issues that these teenagers encounter, it is imperative that we investigate their lived experiences as HIV-positive adolescents. Objective The goal is to investigate the experiences that adolescents at Felege Hiwot Comprehensive Specialized Hospital who are infected with HIV have on a daily basis. Method A phenomenological approach was conducted among thirteen purposively selected adolescents at Felege Hiwot Comprehensive Specialized Hospital, Bahir-Dar, northwest Ethiopia, from March 25 to April 30, 2023. Information saturation was used to estimate the sample size. Data was gathered through semi-structured open-ended interview guides and in-depth interview techniques. The talk was recorded using an audio recorder. The data was transcribed verbatim. The conceptual translation approach was used to translate the transcribed data from Amharic to English. For additional analysis, the translated data was entered into the Atlas.ti.8 program. To demonstrate findings, the inductive thematic analysis technique was applied using illustrative quotes. Colleague feedback, member checks, and a debriefing were used to guarantee the quality of the data. Result Eleven subthemes, including main theme of "lived with burdens of immunodeficiency virus," "disclosure," "ART adherence," and "future aspiration," were used to describe the findings. The participants discussed how difficult it has been for them to deal with social, emotional, and psychological difficulties in addition to living with the HIV infection. They kept their illness a secret from others out of fear of prejudice and stigma. In conclusion, adolescents infected with the human immunodeficiency virus faced a variety of difficulties related to their mental health, relationships, emotions, and compliance. It is advised that the community get ongoing, comprehensive health education in order to prevent stigmatization and discrimination against young people who have the virus.

Case 1-2025: A 35-Year-Old Woman with Shortness of Breath and Edema in the Legs

Deacetylated SNAP47 recruits HOPS to facilitate autophagosome-lysosome fusion independent of STX17

Household transmission of SARS-CoV-2 in five US jurisdictions: Comparison of Delta and Omicron variants

Households are a significant source of SARS-CoV-2 transmission, even during periods of low community-level spread. Comparing household transmission rates by SARS-CoV-2 variant may provide relevant information about current risks and prevention strategies. This investigation aimed to estimate differences in household transmission risk comparing the SARS-CoV-2 Delta and Omicron variants using data from contact tracing and interviews conducted from November 2021 through February 2022 in five U.S. public health jurisdictions (City of Chicago, Illinois; State of Connecticut; City of Milwaukee, Wisconsin; State of Maryland; and State of Utah). Generalized estimating equations were used to estimate attack rates and relative risks for index case and household contact characteristics. Data from 848 households, including 2,622 individuals (median household size = 3), were analyzed. Overall transmission risk was similar in households with Omicron (attack rate = 47.0%) compared to Delta variant (attack rate = 48.0%) circulation. In the multivariable model, a pattern of increased transmission risk was observed with increased time since a household contact’s last COVID-19 vaccine dose in Delta households, although confidence intervals overlapped (0–3 months relative risk = 0.8, confidence interval: 0.5–1.2; 4–7 months relative risk = 1.3, 0.9–1.8; ≥8 months relative risk = 1.2, 0.7–1.8); no pattern was observed in Omicron households. Risk for household contacts of symptomatic index cases was twice that of household contacts of asymptomatic index cases (relative risk = 2.0, 95% confidence interval: 1.4–2.9), emphasizing the importance of symptom status, regardless of variant. Uniquely, this study adjusted risk estimates for several index case and household contact characteristics and demonstrates that few characteristics strongly dictate risk, likely reflecting the complexity of the biological and social factors which combine to impact SARS-CoV-2 transmission.

Clearance of Driver Mutations after Transplantation for Myelofibrosis

Anomalous photovoltaics in Janus MoSSe monolayers

Retraction: Enriched Environment Prevents Hypobaric Hypoxia Induced Memory Impairment and Neurodegeneration: Role of BDNF/PI3K/GSK3β Pathway Coupled with CREB Activation

Heart Failure with Preserved Ejection Fraction

Molecular logic for cellular specializations that initiate the auditory parallel processing pathways

Healthcare providers’ (HCPs) perspectives in initiating discussion on mammogram screening, and their perceived barriers and enablers to screening in women—A qualitative study

Background Breast cancer is the most common cancer in women, and mammogram screening can reduce breast cancer mortality. Healthcare providers’ perspectives can have an impact on encouraging females to attend mammogram screening. Objective To understand healthcare providers’ (HCPs) perspectives in initiating discussion on mammogram screening, and their perceived barriers and enablers to screening in women. Method A qualitative descriptive study design was used. Focus group discussions (FGD) were conducted with a purposive sample of doctors and nurses from SingHealth Polyclinics between February 2019 to July 2020. “The Generalists’ Wheel of Knowledge, Understanding and Inquiry” was adopted as the conceptual framework to design the interview guide and analyse the data. Results Thirty participants consisting of 14 doctors and 16 nurses were interviewed across five FGDs. HCPs personal factors such as gender, their personal experience with mammogram, and years of work experience influenced counselling. They perceived that patients’ language, education status, previous experience with mammogram, misconceptions, and fear of mammogram results were potential barriers to mammogram. HCPs believed they had the knowledge to provide information and initiate discussions on mammogram screening. Healthcare factors were cost, accessibility to screening, consultation time constraints, and inadequate information in health records. Conclusion HCPs’ information mastery and personal experiences were enablers in encouraging females to attend mammogram screening. Lack of information in the health records was a barrier to providing continuity of care. Implications for practice Nurses should be opportunistic in initiating conversations and encourage women on mammogram screening when they visit the clinic. Training and being updated on mammography screening guidelines is important for clinicians to initiate and provide discussions on mammogram screening.

Coordinating Multidisciplinary Care — Improving Outcomes after Fragility Fractures

DCAF13-mediated K63-linked ubiquitination of RNA polymerase I promotes uncontrolled proliferation in Breast Cancer

Comprehensive multi-metric analysis of user experience and performance in adaptive and non-adaptive lower-limb exoskeletons

Among control methods for robotic exoskeletons, biologically inspired control based on central pattern generators (CPGs) offer a promising approach to generate natural and robust walking patterns. Compared to other approaches, like model-based and machine learning-based control, the biologically inspired control provides robustness to perturbations, requires less computational power, and does not need system models or large learning datasets. While it has shown effectiveness, a comprehensive evaluation of its user experience is lacking. Thus, this study addressed this gap by investigating the performance of a state-of-the-art adaptive CPG-based exoskeleton control system (intelligent mode) under a multi-metric analysis (involving three-dimensional gait analysis, muscle activity, oxygen consumption, user comfort, and exoskeleton performance scores) and comparing it to a standard commercial exoskeleton control system (default mode). A cross-over design with randomized allocation in Thai healthy and independently walking adults ensured participants experienced both modes. All participants were assigned into two groups to receive an alternate sequence of walking with the intelligent mode or the default mode of the lower-limb exoskeleton Exo-H3 at high and normal speed. From eight participants, the intelligent mode-driven exoskeleton (adaptive exoskeleton) showed a significantly lower velocity, stride, and step lengths than the default mode-driven exoskeleton (non-adaptive exoskeleton). This setup significantly increased anterior pelvic tilt during mid-swing at normal speed (3.69 ± 1.77 degrees, p = 0.001) and high speed (2.52 ± 1.69 degrees, p = 0.004), hip flexion during stance phase with ankle dorsiflexion, and used less oxygen consumption at high speed (-2.03 ± 2.07 ml/kg/min) when compared to the default one. No significant differences of muscle activity, user comfort and exoskeleton performance scores between the two modes. Further exoskeletal modification in terms of hardware and control is still needed to improve the temporal spatial, kinematics, user comfort, and exoskeleton performance.