Publications by authors named "Piao Feng"

Background: Chronic fatigue syndrome (CFS) is a long-term and complex chronic disease that seriously affects the physical and mental health and quality of life of patients. Massage, as one of the methods in traditional Chinese medicine, can treat both symptoms and root causes and is widely used to treat CFS. The main purpose is to systematically evaluate the impact of massage therapy on the efficacy and safety of CFS patients, providing a reference for clinical practice.

View Article and Find Full Text PDF

Chlorantraniliprole (CAP) is widely used in pest control, and its environmental residues affect the disease resistance of non-target insect silkworms. Studies have demonstrated that changes in gut microbial communities of insects are associated with susceptibility to pathogens. In the present study, we examined the effects of CAP exposure on the immune system and gut microbial community structure of silkworms.

View Article and Find Full Text PDF

Glyphosate is a widely used herbicide and crop desiccant. However, whether its extensive use has any effect on the species diversity of nontarget organisms is still unclear. In this study, we used the silkworm, Bombyx mori, as the research subject, and performed RNA sequencing to analyze the transcriptional profile of silkworm midgut after exposure to glyphosate at 2975.

View Article and Find Full Text PDF
Article Synopsis
  • Chlorantraniliprole (CAP) is an agricultural pesticide that can negatively impact silkworm (Bombyx mori) cocoon formation, prompting the need for better toxicity assessment methods.
  • The study found that exposure to low concentrations of CAP decreases key ATPase activities in silkworms and significantly affects the regulation of AMPK-related and autophagy-related genes.
  • Overall, the findings highlight that CAP exposure causes autophagy in the silk glands of silkworms, impairing their physiological functions and aiding in evaluating the toxicity of environmental pesticide residues.
View Article and Find Full Text PDF

Here, we develop a simple, efficient, bacmid-based, selection marker-free method for gene deletion and editing in baculovirus genomes. Specifically, based on pFastbac1, a donor plasmid with long left and right homology arms but without a reporter was constructed for disrupting ie1, an essential baculovirus gene. Instead of ligating with a plasmid, the homology arms were introduced to the polyhedrin locus of BmNPV bacmid using the BmNPV bac-to-bac expression system.

View Article and Find Full Text PDF

Glyphosate is an herbicide widely used worldwide, but whether it is safe to nontarget organisms is controversial. In this study, the lepidopteran model insect silkworm was used to investigate the effects of glyphosate residues. The LC (72 h) of glyphosate on silkworm was determined to be 14875.

View Article and Find Full Text PDF

The Tachinidae are natural enemies of many lepidopteran and coleopteran pests of crops, forests, and fruits. However, host-tachinid parasitoid interactions have been largely unexplored. In this study, we investigated the effects of tachinids on host biological traits, using , a generalist parasitoid, and the silkworm , its lepidopteran host, as models.

View Article and Find Full Text PDF
Article Synopsis
  • * Research has shown that the strength of silk varies with the filament size, revealing that smaller filaments tend to be stronger, while the structure and fibrosis process of silk contribute to this strength.
  • * The study indicates that the stability of silk protein secretion during the spinning process affects the silk's structure and properties, suggesting that the stretching degree of the silk protein plays a crucial role in its overall strength.
View Article and Find Full Text PDF

The neonicotinoid insecticide acetamiprid is widely applied for pest control in agriculture production, and its exposure often results in adverse effects on a non-target insect, Bombyx mori. However, only few studies have investigated the effects of exposure to sublethal doses of neonicotinoid insecticides on gut microbiota and susceptibility to pathogenic bacteria. In this study, we aimed to explore the possible mechanisms underlying the acetamiprid-induced compositional changes in gut microbiota of silkworm and reduced host resistance against detrimental microbes.

View Article and Find Full Text PDF
Article Synopsis
  • Silkworms (Bombyx mori) are crucial for the economy and serve as a useful model organism for studying autophagy-related genes.
  • The BmAtg7 gene, which plays a significant role in autophagy, was cloned and characterized; it is highly expressed in the silk gland, fat body, and epidermis and is involved in the growth stages of silkworms.
  • Despite a decrease in BmAtg7 expression after exposure to chlorantraniliprole (CAP) and its depletion delaying metamorphosis, it was found that BmAtg7 changes do not directly cause defects in the metamorphosis process induced by CAP.
View Article and Find Full Text PDF
Article Synopsis
  • * Silkworms exposed to acetamiprid showed reduced silk gland index and cocooning rates, with gene expression analysis revealing significant oxidative stress and up-regulation of antioxidant enzymes in their posterior silk glands.
  • * The study highlights the up-regulation of key genes in the FoxO/CncC/Keap1 signaling pathway, indicating that the oxidative stress from acetamiprid exposure may be responsible for the cocooning disorder in silkworms, providing
View Article and Find Full Text PDF

Neuropeptide Y (NPY) receptors are present in cardiac membranes. However, its physiological roles in the heart are not clear. The aim of this study was to define the direct effects of pancreatic polypeptide (PP) on atrial dynamics and atrial natriuretic peptide (ANP) release in perfused beating atria.

View Article and Find Full Text PDF

The aim of present study was to define the effects of insulin on atrial dynamics and ANP release and its modification in diabetic rats. An isolated perfused beating atrial model was used from control and diabetic rats. Insulin was perfused with and without an inhibitor for tyrosine kinase or phosphatidylinositol 3-kinase (PI 3-kinase).

View Article and Find Full Text PDF

Extracellular ATP acts as a local regulator of physiological functions in the cardiovascular system via P1 and P2 receptors. However, little is known about the effect of ATP on the release of atrial natriuretic peptide (ANP) secretion. The purpose of this study was to investigate the effects of extracellular ATP on atrial hemodynamics and ANP release and to identify their receptor-mediated mechanism.

View Article and Find Full Text PDF

Dendroaspis natriuretic peptide (DNP), a 38-amino acid peptide, was isolated from the venom of green mamba. It has structural and functional similarities to the other members of the natriuretic peptide family. The purpose of this study was to determine whether DNP is present in pig ovarian granulosa cells and to define its biological functions.

View Article and Find Full Text PDF

Amylin cosecretes with insulin from pancreatic beta-cells and shows high sequence homology with CGRP, adrenomedullin, and salmon calcitonin. This study aimed to investigate the effect of amylin on the atrial hemodynamics and ANP release from rat atria and to identify its receptor subtypes. Isolated perfused left atria from either control or streptozotocin-treated rats were paced at 1.

View Article and Find Full Text PDF

Calcitonin gene-related peptide (CGRP), a 37-amino acid neuropeptide, is found in the central nervous system as well as in the heart. CGRP shows high sequence homology with amylin, salmon calcitonin, and adrenomedullin. This study aimed to investigate the effect of CGRP on atrial hemodynamics and atrial natriuretic peptide (ANP) release by using isolated perfused beating left atria and to identify its receptor subtypes.

View Article and Find Full Text PDF

Lysophosphatidylcholine (LPC) is an endogenous phospholipid released from the cell membrane during ischemia, and it has potent cardiac effects, including inhibition of atrial natriuretic peptide (ANP) release. The aim of this study was to investigate the effects of LPC on hemodynamics and ANP release in hypertrophied atria and to define its mechanism. Isolated, perfused, beating, hypertrophied atria from monocrotaline-treated rats were used.

View Article and Find Full Text PDF