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Vitamin D is thought to play a role in the development of migraine, but the nature of the relationship is still not fully understood. Although some studies have shown an association between vitamin D deficiency and migraine, other studies have had inconsistent or inconclusive results. Therefore, further research is needed to better understand the relationship between vitamin D and migraine headaches. We selected 9142 participants from the 2001-2004 National Health and Nutrition Examination Survey (NHANES). In our study, the term \"serum vitamin D\" refers to the concentration of 25OHD2 + 25OHD3 (nmol/L) in the blood. Migraine was assessed based on self-reports in the miscellaneous pain section of the NHANES questionnaire. Associations between vitamin D and the risk of migraine were examined using multiple logistic regression, smoothed curve fitting, and stratified analyses. In our study, 20.53% of the participants suffered from migraine. The prevalence of migraine was higher in those with lower serum vitamin D levels. Participants in the highest quartile of serum vitamin D levels were found to have a 16% lower prevalence than those in the lowest quartile in the fully adjusted model (OR = 0.84, 95% CI 0.71-0.99). This result was supported by stratified analysis and smoothed curve fitting. Our study showed a significant negative correlation between serum vitamin D levels and the prevalence of migraine in American adults.

The coherent interaction of electromagnetic fields with solid-state two-level systems can yield deterministic quantum light sources for photonic quantum technologies. To date, the performance of semiconductor single-photon sources based on three-level systems is limited mainly due to a lack of high photon indistinguishability. Here we tailor the cavity-enhanced spontaneous emission from a ladder-type three-level system in a single epitaxial quantum dot through stimulated emission. After populating the biexciton (XX) of the quantum dot through two-photon resonant excitation, we use another laser pulse to selectively depopulate the XX state into an exciton (X) state with a predefined polarization. The stimulated XX–X emission modifies the X decay dynamics and improves the characteristics of a polarized single-photon source, such as a source brightness of 0.030(2), a single-photon purity of 0.998(1) and an indistinguishability of 0.926(4). Our method can be readily applied to existing quantum dot single-photon sources and expands the capabilities of three-level systems for advanced quantum photonic functionalities.Deterministic single-photon sources are a key building block for photonic quantum technologies. Stimulated emission now helps tailoring spontaneous emission from a ladder-type three-level system in a single epitaxial quantum dot for bright polarized sources with a high photon purity and indistinguishability.

The application of intelligent agricultural machinery is crucial in modern agricultural production. However, in environments where the target and the surrounding morphology are highly similar, such as distinguishing sesame seedlings from weeds, the problem essentially becomes one of optimizing edge detection algorithms for similar targets. To address this issue in agricultural object detection, we developed a custom dataset containing 1,300 images of sesame seedlings and weeds. To overcome the high complexity and low detection accuracy limitations of the original DINO model for this problem, the backbone network was replaced with MobileNet V3, the SENet attention mechanism and neck structure were optimized, and the H-Swish6 activation function was introduced to suit edge devices. Given the higher degree of lignification in the stems of sesame seedlings, these modifications improved the overall Average Precision (AP) of the model on the COCO dataset by 5.1% compared to the original DINO model. Specifically, and increased by 3.3% and 3.8%, respectively, while and increased by 2.3% and 3.2%. The model’s parameter count was reduced to 29M, inference time was lowered by 60%, and computational cost in FLOPs decreased by 43.72%. To verify the effectiveness of the improvements, we developed a custom dataset containing 1,300 images of sesame seedlings and weeds. On this model, the improved DINO model achieved a maximum AP of 81.8%, outperforming the YOLOv7 model by 5.6%, with an FPS of 24 frames per second. Ablation experiments verified the effectiveness of the model improvements.However, the aforementioned studies have not addressed the issue of low detection accuracy in scenarios with similar targets in the agricultural domain.

Increasing evidence suggests that non-coding small RNAs (miRNAs) carried by exosomes (EXOs) play important roles in the development and treatment of polycystic ovary syndrome (PCOS). In this study, we demonstrate that PCOS mouse serum-derived EXOs promote granulosa cells (GCs) ferroptosis, and induce the occurrence of a PCOS-like phenotype in vivo. Notably, EXO miRNA sequencing combined with in vitro gain- and loss-of-function assays revealed that miR-128-3p, which is absent in the serum-derived EXOs of mice with PCOS, regulates lipid peroxidation and GC sensitivity to ferroptosis inducers. Mechanistically, overexpression of CSF1 , a direct target of miR-128-3p, reversed the anti-ferroptotic effect of miR-128-3p. Conversely, ferroptosis induction was mitigated in CSF1 -downregulated GCs. Furthermore, we demonstrated that miR-128-3p inhibition activates the p38/JNK pathway via CSF1 , leading to NRF2-mediated down-regulation of SLC7A11 transcription, which triggers GC iron overload. Moreover, intrathecal miR-128-3p AgomiR injection into mouse ovaries ameliorated PCOS-like characteristics and restored fertility in letrozole-induced mice. The study reveals the pathological mechanisms of PCOS based on circulating EXOs and provides the first evidence of the roles of miR-128-3p and CSF1 in ovarian GCs. This discovery is expected to provide promising therapeutic targets for the treatment of PCOS. Highlights Serum exosomes from PCOS mice induce GC ferroptosis. Serum exosomes of PCOS-like mice have lower miR-128-3p levels. Exosome effects are mediated by the miR-128-3p- CSF1 -p38/JNK signalling axis. miR-128-3p and CSF1 are regulators mediating ferroptosis in ovarian GCs. miR-128-3p is a novel potential biomarker for the diagnosis and treatment of PCOS.

The coherent interaction of electromagnetic fields with solid-state two-level systems can yield deterministic quantum light sources for photonic quantum technologies. To date, the performance of semiconductor single-photon sources based on three-level systems is limited mainly due to a lack of high photon indistinguishability. Here, we tailor the cavity-enhanced spontaneous emission from a ladder-type three-level system in a single epitaxial quantum dot (QD) through stimulated emission. After populating the biexciton (XX) of the QD through two-photon resonant excitation (TPE), we use another laser pulse to selectively depopulate the XX state into an exciton (X) state with a predefined polarization. The stimulated XX-X emission modifies the X decay dynamics and yields improved polarized single-photon source characteristics such as a source brightness of 0.030(2), a single-photon purity of 0.998(1), and an indistinguishability of 0.926(4). Our method can be readily applied to existing QD single-photon sources and expands the capabilities of three-level systems for advanced quantum photonic functionalities.