β-Carotene is a natural antioxidant that has an indispensable effect on the growth and immunity of the human body. For intracellular and detection of β-carotene, N-doped carbon quantum dots (O-CDs) were prepared by co-heating carbonization of 1,5-naphthalenediamine and nitric acid in ethanol solvent for 2 h at 200 °C. O-CDs have longer wavelength orange light emission, with an optimal excitation peak of 470 nm and an optimal emission peak of 590 nm. According to the principle of the internal filtering effect on which the detection system is based, O-CDs present a good linear relationship with β-carotene within a wide range of 0-2000 μM, and the coefficient of the linear regression equation is 0.999. In addition, O-CDs showed targeting of lysosomes in cell imaging and could be used to detect intracellular lysosomal movement. These experiments show that O-CDs can be used for and detection of β-carotene and can serve as a potential substitute to commercial lysosome targeting probes.
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http://dx.doi.org/10.1039/d3an00319a | DOI Listing |
Ultrasonography
December 2024
Professor Emeritus, Department of Radiology, Seoul National University Hospital, Seoul, Korea.
Nutcracker syndrome is caused by the compression of the left renal vein between the abdominal aorta and the superior mesenteric artery. The use of Doppler ultrasonography to diagnose this condition is challenging due to the dynamic nature of the nutcracker phenomenon and the variability of its symptoms, which can fluctuate with changes in patient posture and respiration. This review emphasizes the critical role of Doppler ultrasonography in identifying and managing nutcracker syndrome.
View Article and Find Full Text PDFInt J Neural Syst
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Dipartimento di Informatica, Sistemistica e Comunicazione, Università degli Studi di Milano-Bicocca, Viale Sarca 336/14 Milano 20126, Italy.
In the last few decades, Artificial Neural Networks have become more and more important, evolving into a powerful tool to implement learning algorithms. Spiking neural networks represent the third generation of Artificial Neural Networks; they have earned growing significance due to their remarkable achievements in pattern recognition, finding extensive utility across diverse domains such as e.g.
View Article and Find Full Text PDFHinyokika Kiyo
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A 26-year-old male presented to a hospital with complaints of hemoptysis and right scrotal swelling. Computed tomography (CT) revealed right testicular swelling, multiple lung metastases, and small intestinal wall thickening. The patient's β-human chorionic gonadotropin, alpha-fetoprotein, lactate dehydrogenase, and hemoglobin levels were 103.
View Article and Find Full Text PDFHinyokika Kiyo
November 2024
The Department of Urology, Kyoto University Hospital.
We retrospectively analyzed the regions and perioperative outcomes associated with lymph node dissection in patients with prostate cancer. Of 543 patients who underwent robot-assisted radical prostatectomy for prostate cancer with or without lymph node dissection according to the modified D'Amico criteria, 333 (61.3%), 128 (23.
View Article and Find Full Text PDFJ Egypt Natl Canc Inst
December 2024
Department of Clinical Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
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