Publications by authors named "Ya-Xin Guo"

Background: Peripheral FDG accumulation in a hepatic hemangioma presenting in a patient with prolonged fever is rare. Therefore, clinicians should pay close attention to patients with hepatic mass.

Case Summary: A 54-year-old woman with a 4-wk history of daily fevers was admitted to our hospital.

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Childhood and adolescence are critical periods for optimizing skeletal growth. Dairy products are valuable sources of bone-beneficial nutrients, particularly calcium and protein. A random-effects meta-analysis of published randomized controlled trials was performed to quantitatively assess the effects of dairy supplementation on bone health indices in children and adolescents.

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Lactoferrin (Lf) has been shown to benefit cognitive function in several animal models. To elucidate the underlying mechanisms, male C57BL/6J mice were randomly divided into the control (CON), Western-style diets (WD), lactoferrin (Lf), and Lf + antibiotics (AB) groups. The Lf group was intragastrically administered with Lf, and the Lf + AB group additionally drank a solution with antibiotics.

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In vitro intestinal epithelium models have drawn great attention to investigating intestinal biology in recent years. However, the difficulty to maintain the normal physiological status of primary intestinal epithelium in vitro limits the applications. Here, we designed patterned electrospun polylactic acid (PLA) nanofibrous membranes with crypt-like topography and mimic ECM fibrous network to support crypt culture and construct in vitro intestinal epithelium models.

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The synergetic biological effect of scaffolds with biomimetic properties including the ECM micro-architecture and intestinal macro-mechanical properties on intestinal models remains unclear. Here, we investigate the profitable role of biomimetic scaffolds on 3D intestinal epithelium models. Gelatin/bacterial cellulose nanofiber composite scaffolds crosslinked by the Maillard reaction are tuned to mimic the chemical component, nanofibrous network, and crypt architecture of intestinal ECM collagen and the stability and mechanical properties of intestinal tissue.

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Bacteria colonizing the gastrointestinal tract generally grow well in biofilms. In recent years, probiotic biofilms have been considered the most promising fourth-generation probiotics. However, the research into the functions of probiotic biofilms is just starting.

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Biofilms are the oldest, most successful, and most widely distributed form of microorganism life on earth, existing even in extreme environments. Presently, probiotics in biofilm phenotype are thought as the most advanced fourth-generation probiotics. However, high-efficiency and large-scale biofilm enrichment in an artificial way is difficult.

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Intestinal injury is one of the major side effects that are induced by medical radiation exposure, and has limited effective therapies. In this study, we investigated the beneficial effects of sanguinarine (SAN) on intestinal injury induced by ionizing radiation (IR) both in vitro and in vivo. Mice were exposed to whole abdominal irradiation (WAI) to mimic clinical scenarios.

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Aims: Intestinal injury is a clinical problem related to radiotherapy or accidental exposure to ionizing radiation. This study aimed to investigate the protective effect of p-coumaric acid (CA) against radiation induced intestinal injury.

Main Methods: The present study orally administered CA to C57BL/6 male mice at 30 min before total body irradiation and continued for 3 days post irradiation.

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Article Synopsis
  • - Lake Taihu, a major freshwater lake in eastern China, is experiencing harmful cyanobacterial blooms that produce microcystins (MCs), which can be toxic to humans and animals, especially through its impact on plants like Euryale ferox Salisb.
  • - Research showed that higher concentrations of the toxin MC-LR inhibited the growth of E. ferox seedlings, with significant effects noted at 1 μg/L and maximum at 5 μg/L, while antioxidant enzyme activities increased as a response to the toxin.
  • - The study found that exposure to MC-LR also stimulated the production of secondary metabolites and heightened the activity of detoxification enzymes, indicating that understanding these mechanisms could aid in developing bio-ind
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One new epoxydon ester () and a new benzolactone derivative (), along with four known compounds (-), were isolated from the insect-associated fungus sp. Their structures were confirmed by extensive MS and NMR spectroscopic analysis and their absolute configurations were determined by a combination of modified Mosher method and Mo(OCOCH)-induced electronic circular dichroism (ECD) experiments. Compounds and were revealed to have potent antioxidant activities, which were approximate to the potency of the positive control trolox.

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