Publications by authors named "Yunlei Ma"

Background: Chronic Obstructive Pulmonary Disease (COPD) significantly impacts morbidity and mortality globally. While established risk factors like smoking and occupational exposures are well-documented, patients' beliefs-especially those from the miasma theory attributing disease to "bad air" in cultures like China-may also significantly influence health outcomes.

Methods: This case-control study was conducted at Hospital of Hebei University of Traditional Chinese, involving 500 individuals diagnosed with COPD and 500 matched control participants.

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A multinuclear Er-containing Dawson-type poly(selenotungstate) (poly(ST)) [HN(CH)]NaCsH [ErSeWO(HO)(SeWO)]·78HO () was made by the one-pot assembly with an excess SeO source in the reaction system. The polyoxoanion consists of an extremely rare ErSeWO(HO) ({ErSeW}) cluster core surrounded by six tetravacant Dawson-type SeWO ({SeW}) fragments, representing the most Se-containing Dawson-type structure so far. Notably, the {ErSeW} cluster exhibits an interesting trefoil-shaped configuration, formed by the condensation of a central ErSeO ({ErSe}) cage with three ErSeWO(HO) ({ErSeW}) clusters.

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Background: Numerous studies have characterized the gut microbiome (GM) in lung cancer (LC). Yet, the causality between GM and LC and its subtypes remain uncharacterized.

Methods: Two-sample Mendelian randomization (MR) was designed to investigate the causal relationship between the GM and LC and its subtypes, using publicly available summary data of genome-wide association studies.

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Purpose: The evidence for a causal relationship between high-level ozone (O) exposure and acute exacerbation of asthma among adults is limited, and the conclusions are less definitive.

Patients And Methods: Here we collected the daily data on asthma cases, O exposure, and meteorological factors from 2010 to 2016 in Shijiazhuang, China. We investigated the risk of asthma exacerbation associated with high-level ozone exposure using a polynomial distributed lag model (PDLM).

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The sap flow of trees is complex and difficult to express with multivariate linear or empirical models. A simple and feasible method on the basis of understanding sap flow variation to simulate its variation with environmental factors is of special importance for quantitatively analyzing forest ecohydrological processes and regional water demand. In this study, with one of the shelter forest species in the east sandy land of Yellow River in Ningxia as the research object, we continuously measured the trunk sap flow velocity by thermal diffusion sap flow meter, and analyzed the effects of environmental factors on stem sap flow.

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This paper examines seafarers' experience of fatigue during and after the pandemic. A multi-phase mixed methods research design was used, including two quantitative surveys (N and N) and 36 in-depth interviews. Applying propensity score matching the two samples to approximate the conditions of a randomized controlled experiment, the study shows that surprisingly seafarers reported higher levels of fatigue after the pandemic.

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Esophageal cancer is a familiar malignancy with high incidence and mortality, and the overall prognosis is poor. The numbers of cases of and deaths from esophageal cancer have risen rapidly in recent decades. It is one of the most malignant cancers, with more than 0.

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The aim of our study was to investigate waist circumference (WC) change and the risk of incident chronic obstructive pulmonary disease (COPD) among Chinese adults. A total of 8164 participants aged > 18 years who attended health examinations with repeat measurements of WC and lung function [forced vital capacity (FVC), forced expiratory volume in 1 s (FEV)] from 2010 to 2019 were recruited. WC change was categorized as ≤  - 2.

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The outbreak of the coronavirus disease 2019 (COVID-19) represents an alert for epidemic prevention and control in public health. Offline anti-epidemic work is the main battlefield of epidemic prevention and control. However, online epidemic information prevention and control cannot be ignored.

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Background: House dust mite has been well documented as a major source of allergen in asthma. Circular RNAs (circRNAs) vacuolar protein sorting 33A (circVPS33A, circ_0000455) is overexpressed in a murine asthma model. Herein, we sought to identify its critical action in peptidase 1 (Der p1)-induced dysfunction of BEAS-2B cells.

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Small cell lung cancer (SCLC) is a high-grade neuroendocrine tumor characterized by rapid growth, early metastatic spread, and poor prognosis. This study aimed to explore the prognosis factors of survival in Chinese SCLC patients.A total of 78 patients with stage IIIA SCLC (mean age: 53.

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Context: Hyperthermia has now been used to treat many kinds of solid malignancies. However, the applied thermal parameters about heat temperature and time varied all over the world, and no consensus about the optimal formula had been reached. Microwave ablation, as one of thermal ablation methods, is usually applied based on the fixed parameters of power and duration.

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Background: Small cell lung cancer (SCLC) accounts for nearly 15% of all cases of cancer. As a type of highly invasive tumors, SCLC has high degree of malignancy, early and extensive metastasis, and is sensitive to chemotherapy and radiotherapy. The early treatment response rate of SCLC is high but it can also relapse rapidly without any treatment.

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Osteosarcoma, the most common primary tumor of the bones, causes many deaths due to its rapid proliferation and drug resistance. Recent studies have shown that cyclin D1 plays a key regulatory role during cell proliferation, and non-coding microRNAs (miRNAs) act as crucial modulators of cyclin D1 (CCND1). The aim of the current study was to determine the role of miRNAs in controlling CCND1 expression and inducing cell apoptosis.

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Unlabelled: OBJECTIVE The senescence and death of nucleus pulposus (NP) cells are the pathologic basis of intervertebral disc degeneration (IVD). To investigate the molecular phenotypes and senescent mechanism of NP cells, and to identify the method of alleviating senescence of NP cells.

Methods: The primary NP cells were harvested from male Sprague Dawley rats (8-10 weeks old); the hypoxia inducible factor 1alpha(HIF-1alpha, HIF-1beta matrix metalloproteinase 2 (MMP-2), and collagen type II as phenotypic markers were identified through immunocytochemical staining.

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Hypoxia-inducible factor-1α (HIF-1α) has been reported to transactivate the expression of vascular endothelial growth factor (VEGF) and matrix metalloproteinase-2 (MMP-2), which are frequently overexpressed in numerous types of cancer and are known to be significant regulators of angiogenesis. Few studies have investigated the role of these factors in solid tumors, particularly chordomas, which are rare tumors that are thought to originate from notochordal remnants. To clarify whether HIF-1α is involved in angiogenesis in chordoma tissues, we examined the expression of HIF-1α, VEGF and MMP-2 with immunohistochemistry using a tissue microarray containing 35 chordoma samples.

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Objective: To observe the expression of P-selectin (Ps), intercellular adhesion molecule-1 (ICAM-1) and nuclear factor-kappa B (NF-kappaB) in lung tissues of acute lung injury (ALI) rat model induced by oleic acid (OA) and to explore the protective effects of melatonin (MT) in lung tissues in rats.

Methods: All rats were randomly divided into four groups: control group, OA group, MT + OA group and SB203580 + OA group. Rat model of ALI was established by intravenous injection of oleic acid (OA).

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Background: Limb-salvage surgery has been well recognized as a standard treatment and alternative to amputation for patients with malignant bone tumors. Various limb-sparing techniques have been developed including tumor prosthesis, allograft, autograft and graft-prosthesis composite. However, each of these methods has short- and long-term disadvantages such as nonunion, mechanical failures and poor limb function.

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Article Synopsis
  • The study investigates the expression of p-p38 MAPK in lung tissues of rats with acute lung injury induced by lipopolysaccharide (LPS), assessing the potential protective effects of melatonin (MT).
  • Rats were divided into three groups: control, LPS, and LPS + MT, with various methods used to measure p-p38 MAPK expression and observe lung tissue changes.
  • Results show increased p-p38 MAPK expression in the LPS group compared to the control group, while MT treatment significantly reduced this expression, indicating that MT may protect against inflammation in acute lung injury by inhibiting p38 MAPK activation.
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