Publications by authors named "Meng-Nan Chen"

Unlabelled: While a considerable number of viruses have been recently discovered in hematophagous insects, there remains insufficient research on virus diversity and their association with phytophagous insect hosts. In this study, we conducted a systematic investigation of the RNA virome in the small brown planthopper (SBPH), , an important vector of plant viruses. We successfully identified a total of 22 RNA viruses, including 17 novel viruses, from various families.

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Objectives: This research aims to analyze how exposure to fine particulate matter (PM5) and ambient heat during pregnancy increases the risk of congenital hydronephrosis (CH) in newborns.

Methods: A case-control study was conducted to investigate the relationship between exposure to PM and ambient heat during pregnancy and the occurrence of CH in newborns. The study, which was conducted from 2015 to 2020, included 409 infants with CH as the case group and 409 infants without any abnormalities as the control group.

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Agricultural insects play a crucial role in transmitting plant viruses and host a considerable number of insect-specific viruses (ISVs). Among these insects, the white-backed planthoppers (WBPH; , Hemiptera: Delphacidae) are noteworthy rice pests and are responsible for disseminating the southern rice black-streaked dwarf virus (SRBSDV), a significant rice virus. In this study, we analyzed WBPH transcriptome data from public sources and identified three novel viruses.

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Bone targeted delivery of estrogen offers great promise for the clinical application of estrogen in the treatment of postmenopausal osteoporosis (PMOP). However, the current bone-targeted drug delivery system still has several issues that need to be solved, such as the side effects of bone-targeted modifier molecules and the failure of the delivery system to release rapidly in the bone tissue. It is important to aggressively search for new bone-targeted modifier molecules and bone microenvironment-responsive delivery vehicles.

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The remodeling of actin cytoskeleton of osteoclasts on the bone matrix is essential for osteoclastic resorption activity. A specific regulator of the osteoclast cytoskeleton, integrin αβ, is known to provide a key role in the degradation of mineralized bone matrixes. Cilengitide is a potent inhibitor of integrins and is capable of affecting αβ receptors, and has anti-tumor and anti-angiogenic and apoptosis-inducing effects.

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Article Synopsis
  • A new ultrasound-guided protocol for stellate ganglion block in rats significantly improves accuracy and reduces complications compared to traditional blind techniques.
  • The study involved 56 rats divided into two groups, with one group receiving the block using ultrasound and the other using a blind injection method, and it measured outcomes like effective volume and complication rates.
  • Results showed that the ultrasound-guided method required less lidocaine (0.040 ml) compared to the blind method (0.639 ml) and had a much lower incidence of complications, particularly regarding the brachial plexus and vagus nerve.
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With increasing age, bone tissue undergoes significant alterations in composition, architecture, and metabolic functions, probably causing senile osteoporosis. Osteoporosis possess the vast majority of bone disease and associates with a reduction in bone mass and increased fracture risk. Bone loss is on account of the disorder in osteoblast-induced bone formation and osteoclast-induced bone resorption.

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The circadian clock regulates many key physiological processes such as the sleep-wake cycle, hormone release, cardiovascular health, glucose metabolism and body temperature. Recent evidence has suggested a critical role of the circadian system in controlling bone metabolism. Here we review the connection between bone metabolism and the biological clock, and the roles of these mechanisms in bone loss.

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Resveratrol (RSV) is a natural extract that has been extensively studied for its significant anti-inflammatory and antioxidant effects, which are closely associated with a variety of injurious diseases and even cosmetic medicine. In this review, we have researched and summarized the role of resveratrol and its different forms of action in wound healing, exploring its role and mechanisms in promoting wound healing through different modes of action such as hydrogels, fibrous scaffolds and parallel ratio medical devices with their anti-inflammatory, antioxidant, antibacterial and anti-ageing properties and functions in various cells that may play a role in wound healing. This will provide a direction for further understanding of the mechanism of action of resveratrol in wound healing for future research.

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A novel approach for the visible-light-initiated synthesis of 2-amino-4-pyran-3,5-dicarbonitrile derivatives via a one-pot, three-component reaction of aldehydes or isatins, malononitrile, and α-cyano ketones has been developed. The reaction was carried out at room temperature in ethanol/water to give the corresponding products with a wide range of functional groups in high yields. This process did not require any additives or chromatographic separation and could be applied for gram-scale synthesis.

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