Publications by authors named "Yi-Feng Zhou"

Article Synopsis
  • Acute appendicitis is a frequent surgical emergency typically caused by blockages in the appendix from fecaliths, tumors, or lymphoid growth.
  • Appendectomy has been the standard treatment since 1883, evolving from open procedures to laparoscopic techniques, but it carries risks and complications, including negative appendectomies.
  • Recent developments in endoscopic technology suggest new, minimally invasive treatments like endoscopic retrograde appendicitis therapy, providing a promising alternative for managing uncomplicated cases of appendicitis.
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Purpose: To investigate the factors influencing hypothermia during pancreaticoduodenectomy and establish and verify a prediction model.

Method: The clinical data of patients undergoing pancreaticoduodenectomy in Hunan People's Hospital between January 1, 2022 and October 15, 2022 were analysed. The patients were divided into a hypothermia group ( = 302) and a non-hypothermia group ( = 164) according to whether hypothermia occurred during surgery.

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The synthesis of chiral α-azaheteroaryl oxiranes via enantioselective catalysis is a formidable challenge due to the required complex stereoselectivity and diverse N-heterocyclic structures. These compounds play a crucial role in developing bioactive molecules, where precise chirality significantly influences biological activity. Here we show that using chiral phosphoric acid as a catalyst, our method efficiently addresses these challenges.

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Background: Endoscopic mucosal resection (EMR) appears to be a promising technique for the removal of sessile serrated polyps (SSPs) ≥ 10 mm. To assess the effectiveness and safety of EMR for removing SSPs ≥ 10 mm, we conducted this systematic review and meta-analysis.

Methods: We conducted a thorough search of Embase, PubMed, Cochrane, and Web of Science databases for relevant studies reporting on EMR of SSPs ≥ 10 mm, up until December 2023.

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Purpose: We aimed to explore the clinical diagnostic value of combined detection via protein induced by vitamin K absence or antagonist II (PIVKA-II), alpha-fetoprotein (AFP), and D-dimer (D-D) in hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC).

Materials And Methods: We analyzed PIVKA-II, AFP, and D-D levels in 291 subjects comprising liver cirrhosis (LC) patients (n = 143) and HCC patients (n = 148). Receiver operating characteristic (ROC) curves were used to analyze and compare the clinical diagnostic value of the three biomarkers for HBV-related HCC alone and in combination.

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Objective: To determine the role of replication factor C subunit 5 (RFC5) in acute myeloid leukemia (AML) from four aspects: expression, prognosis, biological functions, and its effects on the immune system.

Methods: The RFC5 gene expression and survival analyses, biological function analyses including functional enrichment analysis of genes co-expressed with RFC5, RFC5-interacted gene network construction, gene set enrichment analysis (GSEA), and immune infiltration analysis were performed using data based on GDC TCGA and GEO. The CIBERSORT algorithm was employed to quantify immune cell fractions.

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Purpose: We explored the expression levels of IgG4 and interleukin (IL)-21 in the serum and ankle joints of collagen-induced arthritis (CIA) rats at different disease stages.

Materials And Methods: Wistar rats were randomly divided into normal and model groups, and the latter group was administered bovine type II collagen to induce arthritis. Enzyme-linked immunosorbent assay was performed at 21, 28, 35, and 42 days to detect IgG4 and IL-21 in the serum, followed by histological and immunohistochemical analyses of IgG4 and IL-21r in the ankle joint of rats.

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Purpose: Spermidine (SPD) is a naturally occurring polyamine. In this study, we examined the role and possible mechanism of SPD in collagen-induced arthritis (CIA) mice.

Materials And Methods: CIA mice were intraperitoneally injected with SPD (2 and 50 mg/kg), dexamethasone (0.

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Present investigation was aimed at developing methotrexate (MTX) and miR-22 mimics-loaded lipid nanoparticles for the effective treatment of rheumatoid arthritis. The dual therapeutics loaded nanoparticles was prepared and subjected to in vitro and in vivo characterizations. The in vivo study was performed on adjuvant- induced arthritis model.

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Article Synopsis
  • This study uses a new analytical method (DEA-LMDI) to break down and analyze the factors influencing particulate matter (PM) emissions in different regions and time periods in China.
  • It finds that the most significant factor in reducing PM emissions is regional environmental-based technology (EBT), which is more effective in East China compared to Northeast China.
  • The research also highlights that while national economic growth and the regional economic structure tend to increase PM emissions, there are inefficiencies in current strategies that need addressing to fully realize emission reduction potential.
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Background And Aim: Fully covered self-expandable metal stents (FCSEMSs) have been increasingly used in the management of benign or malignant biliary disorders. However, the risk of post-endoscopic retrograde cholangiopancreatography pancreatitis (PEP) with transpapillary placement of the FCSEMS remains controversial. This study therefore aimed to investigate the risk of PEP in patients who received FCSEMS implantation.

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In this study, a simple and effective strategy for the enrichment of total steroidal saponins (TSS) from the fibrous roots of (L. f.) Ker-Gawl.

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Although cognitive and sensory deficits have been identified as a core feature of schizophrenia, only a small portion of visual sensorium has been explored. To date, studies on visual system of three-dimensional percepts based on two-dimensional information still are limited. This study is the first to examine the integrity of stereopsis of schizophrenia in a Han Chinese population, and to further investigate the correlation of stereopsis with clinical symptoms.

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Background: The conventional venous access for cardiovascular implantable electronic device (CIED) is the subclavian vein, which is often accompanied by high complication rate. The aim of this study was to assess the efficacy and safety of optimized axillary vein technique.

Methods: A total of 247 patients undergoing CIED implantation were included and assigned to the axillary vein group or the subclavian vein group randomly.

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Two new steroidal glycosides (1 and 2), together with 15 known compounds (3-17) were isolated from the fibrous roots of Ophiopogon japonicus, and three new steroidal glycosides (18-20), together with 14 known compounds (21-34) were isolated from the fibrous roots of Liriope spicata var. prolifera. The structures of the new compounds were elucidated on the basis of extensive one-dimensional (1D)- and 2D-NMR spectroscopic analyses and mass spectrometry.

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Aim: To determine the existence of a potential relationship between the methylation state of the Vimentin gene and its prognostic value in pancreatic cancer.

Methods: Sixty-four primary tumor specimens and normal tissues were collected consecutively from pancreatic cancer patients during surgery at Hangzhou First People's Hospital and Affiliated Hospital of the Logistics University of the Chinese People's Armed Police Force. DNA was extracted from the samples and subsequently quantitative methylation-specific polymerase chain reaction was used to detect the Vimentin methylation status of the samples.

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Effects of extraction temperature, extraction time and ratio of water to material as well as their interactions on the yield of total polysaccharide from Herba lophatheri were studied by response surface methodology (RSM). The optimal conditions for the extraction of polysaccharides were determined to be the ratio of liquid to solid of 39.01, extraction time of 2.

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Background/aims: To systematically evaluate the effect and safety of octreotide on primary moderate to severe acute pancreatitis.

Methodology: The Cochrane Central Register of Controlled Trials (CENTRAL) in The Cochrane Library, PubMed, EMBASE, Science Citation Index Expanded (SCI-E), and Chinese Biomedicine Database (CBM) were searched in September 2011. Major outcomes contained mortality, incidence rate of complications, rate of surgical intervention, and length of hospital stay.

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Four polysaccharides (BLF80-A, BLF80-B, BLF80-C and BLF80-D) were isolated by hot-water extraction and purified from the leaves of Herba Lophatheri by DEAE-Sepharose fast flow. Their chemical and physical characteristics were determined and antioxidant activities were investigated on the basis of DPPH radical assay, hydroxyl radical assay and superoxide radical assay. The results showed that four polysaccharides exhibited antioxidant activities in a concentration-dependent manner, and the higher molecular weight, the stronger antioxidant activities of polysaccharides.

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Objective: To investigate the association between CTLA-4 +49A/G polymorphisms and the risk of susceptibility to cervical cancer.

Methods: A hospital-based case-control study was conducted. 314 cases with primary cervical cancer and 320 healthy controls were collected and genotyped by PCR-based RFLP for +49A/G polymorphisms in the CTLA-4 gene.

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Nitroso compounds have two reactive nitrogen and oxygen atoms. It is interesting and important to perform a nitrogen or oxygen selective reaction with interesting substrates. These atom specific reactions are crucial to specifically synthesis of specific compounds.

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