Publications by authors named "DeChun Chen"

Long-term exposure to high ammonia concentrations could severely impact chicken health. On the other hand, luteolin has been shown to protect against ammonia poisoning. Although phosphorylation is critically involved in toxicity induction, the specific role of phosphorylated proteins in ammonia poisoning remains unclear.

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Cadmium and microplastics, common pollutants, can accumulate in the body, impacting the intestinal barrier and harming livestock breeding. In order to explore the damage mechanism of cadmium and cadmium combined microplastic on the colon of mice, 60 mice were divided into three groups: The control group (0.2 mL of saline), cadmium group (Cd group, 0.

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Background: Salmonella Enteritidis is one of the main pathogens of foodborne diseases and an important pathogen causing diarrhea in yaks. Antibiotics are the mainstay of treatment for salmonellosis, but the widespread use of antibiotics has increased Salmonella resistance. Probiotics have been shown to antagonize Salmonella and reduce Salmonella infection.

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Drosophila Cryptochrome (CRY) is an essential photoreceptor that mediates the resetting of the circadian clock by light. in vitro studies demonstrated a critical role of redox cycling of the FAD cofactor for CRY activation by light. However, it is unknown if CRY responds to cellular redox environment to modulate the circadian clock.

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Background: Liver fibrosis is a common pathological process of chronic liver disease, characterized by excessive deposition of extracellular matrix (ECM). Mesenchymal stem cells (MSCs) have been found to have potential therapy effect on liver fibrosis, but the mechanism involved was still unclear. The objective of this study is to investigate the therapeutic efficacy of adipose-derived mesenchymal stem cells (ADMSCs) on the treatment of liver fibrosis, with particular emphasis on elucidating the underlying mechanism of action through which ADMSCs inhibit the activation of hepatic stellate cells (HSCs).

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Introduction: The most common factor leading to renal failure or death is renal IR (ischemia-reperfusion). Studies have shown that mesenchymal stem cells (MSCs) and their exosomes have potential therapeutic effects for IR injury by inhibiting M1 macrophage polarization and inflammation. In this study, the protective effect and anti-inflammatory mechanism of adipose-derived mesenchymal stem cell-derived exosomes (ADMSC-Exos) after renal IR were investigated.

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Article Synopsis
  • - The study investigates how ammonia exposure affects pyroptosis (a type of programmed cell death) in chicken splenic lymphocytes, highlighting the role of the Golgi apparatus and a specific protein called Golgin A7 (Golga7).
  • - Researchers created an in vitro model to analyze the impact of ammonia, observing structural changes in cell organelles and increased oxidative stress which influenced the levels of miR-32-5p, a microRNA involved in cell death regulation.
  • - Findings suggest that miR-32-5p interacts with Golga7 to modulate pyroptosis-related genes, offering insights that could help develop strategies for preventing ammonia poisoning in chickens within livestock production.
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During feeding process in intensive chicken farms, the prolonged exposure of chickens to elevated level of ammonia leads to substantial economic losses within poultry farming industry. Luteolin (Lut), known as its anti-inflammatory and antioxidant properties, possesses the ability to eliminate free radicals and enhance the activities of antioxidant enzymes, thus rendering it highly esteemed in production. The objective of this study was to examine the effects of Lut on antioxidant and anti-inflammatory responses of chicken splenic lymphocytes exposed to ammonia.

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Extensive application of lead (Pb) brought about environmental pollution and toxic reactions of organisms. Selenium (Se) has the effect of antagonizing Pb poisoning in humans and animals. However, it is still unclear how Pb causes brainstem toxicity.

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Enterotoxigenic (ETEC) can cause intestinal inflammation and diarrhea in yaks, which has a negative impact on their economic value. In recent years, probiotics have gained increasing attention as a pure, natural, nontoxic, harmless, and residue-free additive. However, the underlying mechanisms by which probiotics safeguard against ETEC are not completely elucidated.

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Liver fibrosis (LF) is a late-stage process observed in various chronic liver diseases with bile and retinol metabolism closely associated with it. Adipose-derived mesenchymal stem cells (ADMSCs) have shown significant therapeutic potential in treating LF. In this study, the transplantation of ADMSCs was applied to a CCl-induced LF model to investigate its molecular mechanism through a multi-omics joint analysis.

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This study explored the protective effect of as a probiotic against infection. The protective role of against tissue damage by infection and the expression of inflammatory cytokines and tight junction proteins were detected by histological observation, real-time quantitative PCR and immunohistochemical methods. demonstrated a regulatory function that affected the expression of Claudin-1 and enhanced tight junctions, suppressed the NF-κB/NLRP3/IL-1β signaling pathway and reduced the release of , , , and and inflammatory damage to tissues by in the duodenum, cecum and colon of mice.

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Ammonia poses a significant challenge in the contemporary intensive breeding industry, resulting in substantial economic losses. Despite this, there is a dearth of research investigating efficacious strategies to prevent ammonia poisoning in poultry. Consequently, the objective of this study was to investigate the molecular mechanisms through which Luteolin (Lut) safeguards mitochondria and restores equilibrium to energy metabolism disorders, thereby shielding chicken spleen lymphocytes from the detrimental effects of ammonia poisoning.

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Salmonella spp. are pathogenic bacteria that cause diarrhea, abortion, and death in yak and severely harm livestock breeding. Therefore, it is vital to identify a probiotic that effectively antagonizes Salmonella.

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The yak has a unique physiological structure suited to life in anoxic and cold environments at high altitudes. The aim of this study was to isolate Bacillus species with good probiotic properties from yak feces. A series of tests were performed on the isolated Bacillus: 16S rRNA identification, antibacterial activity, tolerance to gastroenteric fluid, hydrophobicity, auto-aggregation, antibiotic sensitivity, growth performance, antioxidants, and immune indexes.

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A mathematical simulation model of a beam pumping system with frequency conversion control is established, considering the influence of the real-time frequency variation on the motion law of a pumping unit, the longitudinal vibration of a sucker rod string, the crankshaft torque, and the motor power. On this basis, the key links such as state space, action space, and reward function are defined by using deep reinforcement learning theory, and an intelligent model to optimize the frequency modulation for a beam pumping system based on deep reinforcement learning is constructed. The simulation and field application results show that the frequency optimization model can significantly reduce the fluctuation amplitude of the polished rod load, crankshaft torque, motor power, and input power of the system, making the operation of the pumping system more stable and energy-saving.

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Article Synopsis
  • Low-level laser therapy (LLLT), or photobiomodulation, aims to alter cellular activity, but its effects vary due to different irradiation methods.
  • This study tested three irradiation techniques—spot, covering, and scanning—on bone marrow mesenchymal stem cells (BMSCs) to evaluate their impact on cell growth and bone cell differentiation.
  • Results showed that covering irradiation notably increased cell proliferation, alkaline phosphatase (ALP) activity, and mineralization markers compared to other methods and non-irradiated controls, suggesting it is the most effective approach for enhancing BMSC functions.
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Article Synopsis
  • Silicate-substituted calcium phosphate (Si-CaP) ceramics are effective materials for bone grafts due to their favorable biological properties but suffer from weak mechanical strength and poor structure control.
  • * Researchers developed a new porous 3D printed Si-CaP scaffold using digital light processing (DLP) technology, which improved its mechanical properties, structural uniformity, and internal permeability.
  • * The 3D printed Si-CaP scaffold enhanced bone cell activity and mineralization while enabling sustained release of essential ions, making it a promising option for better bone tissue engineering and regeneration.
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Silicon-substituted calcium phosphate (Si-CaP) is a promising bioactive material for bone tissue engineering. The mechanism of Si-CaP regulates osteogenic-angiogenic coupling during bone regeneration has not been fully elucidated. In this study, we screened the targets of Si-CaP and osteogenic-angiogenic coupling.

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Manganese (Mn) poisoning can happen in the case of environmental pollution and occupational exposure. However, the underlying mechanisms of Mn-induced teste toxicity and whether mitochondrion and heat shock proteins (HSPs) are involved in toxic effect of Mn on chicken testes remain poorly understood. To investigate this, MnCl·4HO was administered in the diet (600, 900, and 1800 mg/kg Mn) of chickens for 30, 60, and 90 days.

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Recent studies have shown that the differentiation of bone marrow mesenchymal stem cells (BMSCs) into osteogenic lineages can promotes bone formation and maintains bone homeostasis, which has become a promising therapeutic strategy for skeletal diseases such as osteoporosis. Fructus Ligustri Lucidi (FLL) has been widely used for the treatment of osteoporosis and other orthopedic diseases for thousands of years. However, whether FLL plays an anti-osteoporosis role in promoting the osteogenic differentiation of BMSCs, as well as its active components, targets, and specific molecular mechanisms, has not been fully elucidated.

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Background: During minimally invasive spine surgery, nerve root decompression is challenging due to the anatomical division and uncertainty in lumbar lateral recess (LLR).

Objectives: To evaluate the outcome and safety of foraminoplasty using percutaneous transforaminal endoscopic decompression (PTED) (performed with an aid of a trephine) in the treatment of lumbar lateral recess stenosis (LLRS).

Material And Methods: All operations were performed under local anesthesia and in prone position.

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This study was performed to compare the effectiveness of acupotomy based on the meridian-sinew theory with acupotomy based on the anatomical theory in the treatment of knee osteoarthritis (KOA). A total of 124 patients with knee osteoarthritis were randomized into the meridian-sinew (MS) group (63 patients) and anatomy group (61 patients). In the MS group, acupotomy based on the meridian-sinew theory was performed.

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Cadmium (Cd)-caused water environment pollution has become a matter of concern. Gill is an organ with respiratory and mucosal immune functions, and is also one of the organs directly attacked by pollutants. It was found that excess Cd could cause Cd accumulation and gill injury in carp.

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Circadian rhythms are an integral part of physiology, underscoring their relevance for the treatment of disease. We conducted cell-based high-throughput screening to investigate time-of-day influences on the activity of known antitumor agents and found that many compounds exhibit daily rhythms of cytotoxicity concomitant with previously reported oscillations of target genes. Rhythmic action of HSP90 inhibitors was mediated by specific isoforms of HSP90, genetic perturbation of which affected the cell cycle.

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