Publications by authors named "Simei Chen"

Purpose: The study aims to assess cardiac synchrony under different left bundle branch area pacing (LBBAP) and evaluate the relationship between different surface or intracardiac electrical parameters and mechanical synchrony.

Methods: Eighty-two patients with successful LBBAP were recruited. The electrical synchrony, evaluated by paced QRS duration (pQRSD) and Stim-LVAT (stimulus to left ventricular activation time), and mechanical synchrony, evaluated by the standard deviation of the time-to-peak contraction velocity in 12 left ventricular segments (Tsd-12-LV), were compared between groups in patients underwent LBBAP.

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Article Synopsis
  • The study investigates the role of cell cycle-dependent kinase 1 (CDK1) as a diagnostic tool for small cell lung cancer (SCLC) by comparing serum levels of CDK1 with other markers in different patient groups.
  • Results show that CDK1 levels, along with other markers like ProGRP and NSE, are significantly higher in SCLC patients and correlate with cancer progression indicating its potential clinical value.
  • The combination of CDK1, ProGRP, and NSE provides the most accurate diagnosis for SCLC, outperforming individual markers and demonstrating high sensitivity and specificity.
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Objectives: To identify potential diagnostic markers for small cell lung cancer (SCLC) and investigate the correlation with immune cell infiltration.

Methods: GSE149507 and GSE6044 were used as the training group, while GSE108055 served as validation group A and GSE73160 served as validation group B. Differentially expressed genes (DEGs) were identified and analyzed for functional enrichment.

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To investigate the value of preoperative ultrasound combined with 99mTc-MIBI imaging for the diagnosis of ectopic intrathyroid parathyroid gland (ETPG) in patients with secondary hyperparathyroidism (SHPT). One hundred and eleven patients with SHPT who underwent total parathyroidectomy plus forearm transplantation from January 2015 to January 2022 in the Third Hospital of Hebei Medical University were selected. All patients underwent routine preoperative ultrasonography and 99mTc-MIBI imaging, and with pathological diagnosis as the gold standard, the clinical data of ETPG patients were selected, including clinical manifestations, laboratory tests, preoperative ultrasonography and 99mTc-MIBI imaging for localization and diagnosis, intraoperative exploration and postoperative pathology, and postoperative follow-up.

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To retrospectively analyze the diagnosis and treatment of secondary hyperparathyroidism (SHPT) combined with thyroid disease, and to investigate the correlation between SHPT and papillary thyroid carcinoma (PTC), SHPT and thyroid disease, and the importance of preoperative localization diagnosis in patients with SHPT. Clinical data of 101 patients who underwent surgical treatment for SHPT at the Third Hospital of Hebei Medical University were collected from August 2014 to May 2023, and patients were divided into SHPT without PTC group (n = 94) and SHPT with PTC group (n = 7) according to their postoperative pathology. Patients were divided into SHPT without thyroid disease group (n = 32) and SHPT with thyroid disease group (n = 69) according to their preoperative ultrasound diagnosis and postoperative pathology.

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Background: Lung cancer (LC) is the leading cause of cancer-related deaths worldwide. Tumor marker (TM) detection can indicate the existence and growth of a tumor and has therefore been used extensively for diagnosing LC. Here, we conducted a bibliometric analysis to examine TM-related publications for LC diagnosis to illustrate the current state and future trends of this field, as well as to identify additional promising TMs with high sensitivity.

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  • The study aimed to evaluate the serum levels of IL-17, TNF-α, and DKK-1 in patients with rheumatoid arthritis (RA) across different disease severity stages, comparing them with healthy controls.
  • A total of 141 RA patients were categorized based on disease activity, and significant elevations in these markers were found in patients with moderate to high disease activity compared to controls.
  • The findings suggest that IL-17, TNF-α, and DKK-1 levels correlate strongly with RA severity, with DKK-1 showing the highest diagnostic potential for identifying moderate to high RA activity.
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Objective: To systematically evaluate the diagnostic performance of ultrasound elastography (USE) in distinguishing primary Sjögren's syndrome (pSS) from healthy/disease controls.

Methods: We searched the PubMed, Embase, Web of Science, and Cochrane Library databases for published literature on USE for diagnosing pSS. Bivariate random effects models were used to calculate the pooled sensitivity and specificity of USE.

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Phytophthora root and stem rot caused by Kaufmann and Gerdemann is a soil-borne disease severely affecting soybean production worldwide. Losses caused by can be controlled by both major genes and quantitative trait locus. Here, we tested 112 short-season soybean cultivars from Northeast China for resistance to .

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Introduction: Diabetic nephropathy (DN) is one of the most common and lethal diabetic complications worldwide and is associated with a high risk of mortality. However, the exact mechanism behind its development is unknown. The mesangial cells (MCs) and non-coding RNAs are critical for DN, but it is unknown whether a MEG3/miR-21/ORAI1 regulatory axis exists in MCs.

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Parkinson's disease (PD) is a progressive neurodegenerative disorder, characterized by high morbidity, high disability rate, and slow course of disease. The clinical diagnostic method of PD is complex and time-consuming, and there is no clear biomarker for clinical use. We aimed to investigate the plasma metabolites in PD and find out potential biomarkers with diagnostic ability.

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Phytophthora root rot is a destructive soybean disease worldwide, which is caused by the oomycete pathogen (). Wall-associated protein kinase () genes, a family of the receptor-like protein kinase () genes, play important roles in the plant signaling pathways that regulate stress responses and pathogen resistance. In our study, we found a putative Glycine max wall-associated protein kinase, GmWAK1, which we identified by soybean GmLHP1 RNA-sequencing.

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Introduction: Secondary parathyroid hyperplasia canceration is very rare and thus easily be overlooked during parathyroid ultrasound examination. However, secondary parathyroid hyperplasia still has the possibility of canceration, and it is still important to be alert to its occurrence when performing ultrasound examinations and clinical treatment.

Patient Concerns: A 49-years-old man visited our outpatient department with generalized weakness and pain in both lower extremities a month ago.

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Background: The novel method of left bundle branch pacing (LBBP) has been reported to achieve better electrical and mechanical synchrony in the left ventricle than conventional right ventricular pacing (RVP). However, its effects on right ventricle (RV) performance are still unknown.

Methods: Consecutive patients undergoing dual-chamber pacemaker (PM) implantation for sick sinus syndrome (SSS) with normal cardiac function and a narrow QRS complex were recruited for the study.

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Background: The clinical significance of serum collagen triple helix repeat protein-1 (CTHRC1) and mitotic spindle apparatus antibody (MSA) in the diagnosis of small cell lung cancer (SCLC).

Methods: Of the 229 lung tumor patients selected, 62 patients were divided into SCLC, 94 patients with non-small cell lung cancer (NSCLC), and 73 patients with benign lung disease (BLD). The health controls (HC) had a span of 66 cases with normal physical condition.

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Background: To explore the serum tumor necrosis factor-alpha stimulated gene-6 (TSG-6) level and its association with disease activity in rheumatoid arthritis (RA) patients.

Methods: We recruited 176 RA patients, 178 non-RA patients (lupus erythematosus, osteoarthritis, ulcerative colitis, ankylosing spondylitis and psoriasis) and 71 healthy subjects. Serum TSG-6 levels were detected by enzyme-linked immunosorbent assay (ELISA).

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The pathogenesis of Parkinson's disease (PD) remains to be elucidated, and the metabolomics analysis has the potential to identify metabolic profiles that are involved in PD pathogenesis. Here we applied a target metabolomics approach to measure the plasma levels of 158 fatty acid metabolites in a discovery cohort including 42 PD patients and 54 health volunteers, and found two upregulated (arachidonic acid and 13-hydroxy-octadecatrienoic acid) and eleven down-regulated (docosahexaenoic acid, lyso-platelet-activating factor, 12-hydroxy-eicosatetraenoic acid, dihydroxy-eicosatrienoic acids, dihidroxy-octadecenoic acids, 17,18-dihydroxy-eicosatetraenoic acid, and hydroperoxy-octadecadienoic acids) metabolites as primary candidate marker of PD. A support vector machine algorithm with primary candidate marker was used in an independent validation cohort to identify PD.

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Purpose: To explore the clinical significance of tumor necrosis factor receptor-associated protein (TRAP1), mitotic arrest deficient 2 (mad2) and anti-nuclear mitotic spindle apparatus antibody (MSA) in the diagnosis of small cell lung cancer (SCLC).

Patients And Methods: Serum concentrations of TRAP1 and MSA were determined by enzyme-linked immunosorbent assay (ELISA), including SCLC group (Num.=86), non-small cell lung cancer (NSCLC) group (Num.

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Background: Left bundle branch pacing (LBBP) has been suggested as an alternative means to deliver cardiac resynchronization therapy (CRT).

Hypothesis: LBBP may deliver resynchronization therapy along with an advantage over traditional biventricular (BiV) pacing in clinical outcomes.

Methods: Heart failure patients who presented LBBB morphology according to Strauss's criteria and received successful CRT procedure were enrolled in the present study.

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Introduction: Left bundle branch pacing (LBBP) is a promising new method for patients with pacing indications. This study aims to evaluate the safety and feasibility of LBBP in a relatively longer time span.

Methods And Results: A total of 164 patients were recruited for LBBP in this study.

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Aim: The aim of this study is to assess if left bundle branch pacing (LBBP) can preserve physiological cardiac synchrony and deliver favorable hemodynamic effects.

Methods: Consecutive patients undergoing dual chamber pacemaker implantation for sick sinus syndrome (SSS) and a normal cardiac function with a narrow QRS complex were recruited for the study. Electrocardiogram and echocardiographic examinations were performed during ventricular pacing-on and native-conduction modes.

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In previous studies, it has been shown that the granulocyte macrophage-colony stimulating factor (GM-CSF) or interleukin-2 (IL-2) surface modified MB49 bladder cancer stem cells (MCSCs) vaccine could induce a specific antitumor immunity and against bladder cancer in mice model respectively. However, whether combined administration of GM-CSF and IL-2 could produce specific immune responses to cancer stem cells (CSCs) was uncertain. MCSCs were established and characterized.

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Objective: To evaluate the ovarian response and pregnancy outcomes in patients with excessive ovarian response receiving long-protocol pituitary down-regulation during repeated in vitro fertilization and embryo transfer (IVF-ET).

Methods: Sixty IVF-ET cycles from January 2008 to December 2011 were analyzed retrospectively. The clinical characteristics were compared between the various treatment cycles.

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Objective: To evaluate the value of endometrial microvessel density (MVD) in assessing the endometrial receptivity during the peri-implantation period.

Methods: A total of 104 patients undergoing in vitro fertilization and embryo transfer (IVF-ET) treatment were analyzed retrospectively. The subjects were divided into clinical pregnancy group (50 cases) and nonpregnant group (54 cases) according to the IVF-ET outcome.

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Objective: To explore the efficacy of frozen-thawed embryo transfer combined with intrauterine administration of autologous peripheral blood mononuclear cells (PBMCs) in the treatment of repeated implantation failure (RIF).

Methods: PBMCs obtained from 3 patients with RIF on the day of follicle rupture (natural cycle) or when the endometrial thickness reached 8 mm (hormone replacement cycle) were cultured in the presence of HCG for 48 h. The cultured PBMCs, along with freshly isolated PBMCs, were administered into the uterine cavity of the patients.

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