Publications by authors named "Yixin Zhou"

Most preoperative planning calculations of impingement-free range of motion (IFROM) and impingement-free safe zone (IFSZ) rarely consider non-standard shaped prostheses and bony impingement (BI) for total hip arthroplasty (THA). This research developed a novel algorithm that considers BI, prosthetic impingement, pelvic tilt angle () in the sagittal plane, and non-standard-shaped hip prostheses. This research aimed to investigate the effect of BI and on hip IFROM, IFSZ, and the BI rate.

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Alzheimer's disease (AD) is an age-related neurodegenerative disorder for which there are currently rarely effective drug treatments available to halt or slow down its progression. With the aging of the world population, AD as the primary cause of dementia, is rapidly becoming one of the most expensive, lethal, and burdening diseases of this century. In recent years, the new method used to treat nervous system diseases including AD is transcranial electrical stimulation (tES) with non-invasive and for regulating the flexibility of neural circuits operation and behaviors.

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As an emerging ionic sensor with low-voltage operation (<1 V), biocompatibility, and stable operation in aqueous environments, organic electrochemical transistors (OECTs) have attracted significant research interest for various biofluid-related ion detection, where minor ion concentration variations can effectively reflect health or pathology states. However, OECT-based ion sensors are currently limited by restricted device transconductance g and stabilites, which severely hinder their applications in actual ion sensing scenarios. Here, ultra-sensitive multi-ion sensors based on high-performance n-type vertical OECTs (accumulation mode, g = 58 mS) for Na, K, and Ca detection in a practical biofluid (effluent from continuous renal replacement therapy), are demonstrated with high accuracy and stability, which are comparable to conventional Roche method.

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Background: Primary pulmonary lymphoepithelioma-like carcinoma (PLELC) is a rare subtype of non-small-cell lung cancer. This study aims to compare the efficacy and safety of perioperative PD-1/PD-L1 inhibitor plus chemotherapy versus chemotherapy alone in stage II-IIIB PLELC patients.

Patients And Methods: This retrospective study included stage II-IIIB PLELC patients.

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Purpose: Considering the low survival rate for the numerous hip-preserving procedures developed for treating early-stage osteonecrosis of the femoral head (ONFH), this study aimed to evaluate short-term clinical outcomes following avascular necrosis (AVN) CAGE implantation.

Methods: 58 hips with early-stage ONFH (44 with Association Research Circulation Osseous [ARCO] stage 2 and 14 with stage 3A) treated with the AVN CAGE between August 2018 and December 2021 were included. The survival rates were analysed using radiographic progression and conversion to subsequent total hip arthroplasty (THA) as endpoints.

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Melanoma is a highly malignant skin tumor characterized by high metastasis and poor prognosis. Recent studies have highlighted the pivotal role of melanoma stem cells (MSCs)-a subpopulation of cancer stem cells (CSCs)-in driving tumor growth, metastasis, therapeutic resistance, and recurrence. Similar to CSCs in other cancers, MSCs possess unique characteristics, including specific surface markers, dysregulated signaling pathways, and the ability to thrive within complex tumor microenvironment (TME).

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Article Synopsis
  • Combining immune checkpoint inhibitors (ICIs) with chemotherapy (Chemo) offers superior progression-free survival (PFS) and objective response rates (ORR) for first-line treatment in recurrent or metastatic nasopharyngeal carcinoma (RM-NPC), without increasing treatment-related adverse events (AEs).
  • In subsequent-line treatment with ICIs alone, patients showed a median PFS of 4.12 months and an ORR of 24%, but the efficacy was significantly lower compared to chemotherapy.
  • The study found that neither PD-L1 expression nor other factors predicted the effectiveness of the ICI + Chemo combination over chemotherapy alone, suggesting that the survival benefits are independent of these markers.
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  • The invention of surgical robots improved the accuracy of component placement in total hip arthroplasty (THA), but a tailored preoperative planning method for cup alignment based on individual patient activity is still needed.
  • This study developed a kinematic-kinetic compliant (KKC) method for positioning the acetabular cup, utilizing preoperative gait analysis, musculoskeletal modeling, and CT images to ensure optimal alignment and minimize complications like edgeloading and impingement.
  • Validation of the musculoskeletal model showed that predicted muscle activations aligned with measured data, yet the recommended cup orientations sometimes fell outside the traditional safe zone, underscoring the need for personalized surgical planning.
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Background: Soft tissue balance is essential for total knee arthroplasty success. The elastic properties of soft tissues affect knee-joint stability and flexibility. This study proposed a novel methodology for in vivo quantitative analysis of soft tissue elasticity during total knee arthroplasty.

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Background: The therapeutic advantage of thoracic radiotherapy (tRT) as an adjunct to first-line immunotherapy and chemotherapy in patients with extensive-stage small cell lung cancer (ES-SCLC) remains unclear. We sought to elucidate this in a retrospective cohort study comparing the effectiveness and safety of tRT in combination with first-line immunotherapy and chemotherapy.

Methods: Our retrospective study included patients with ES-SCLC, treated at the West China Hospital between January 2019 and December 2022.

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Circuits based on organic electrochemical transistors (OECTs) have great potential in the fields of biosensors and artificial neural computation due to their biocompatibility and neural similarity. However, the integration of OECT-based circuits lags far behind other emerging electronics. Here, ternary inverters based on antiambipolar vertical OECTs (vOECTs) and their integration with the establishment of neural networks are demonstrated.

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Purpose: This study aims to investigate the underexplored prevalence of placebo-reported immune-related adverse events (irAEs) in immune checkpoint inhibitor (ICI) trials.

Methods: We searched public databases for randomized clinical trials (RCTs) involving ICI versus placebo treatments in patients with malignancies. Study characteristics and irAEs occurrences were extracted for meta-analyses using a random-effects model.

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Objective: In total knee arthroplasty (TKA), achieving soft-tissue balance while retaining acceptable lower limb alignment is sometimes difficult and may lead to patient dissatisfaction. Theoretically, patient-specific implants can bring great benefits, while the lack of precise surgical tools may hinder the improvement of outcomes. The objective of this study was to illustrate surgical techniques and evaluate kinematics and early clinical outcomes of robotic-assisted TKA using patient-specific implants.

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Background: Abdominal computed tomography (CT) scan is a crucial imaging modality for creating cross-sectional images of the abdominal area, particularly in cases of abdominal trauma, which is commonly encountered in traumatic injuries. However, interpreting CT images is a challenge, especially in emergency. Therefore, we developed a novel deep learning algorithm-based detection method for the initial screening of abdominal internal organ injuries.

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DNA-binding proteins perform diverse functions, including regulating cellular growth and orchestrating chromatin architecture. Here, we present a protocol to discover proteins specifically interacting with a hexanucleotide repeat DNA, the expansion of which is known as the most frequent genetic cause of familial C9orf72 amyotrophic lateral sclerosis and frontotemporal dementia. We describe steps to fish out DNA-binding proteins recognizing double-stranded repeat DNAs using a SILAC (stable isotope labelling by amino acids in cell culture)-based approach and validate the results using electrophoretic mobility shift assay.

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Hepatoid adenocarcinoma (HAC) is a poorly differentiated extrahepatic tumor that can produce alpha-fetoprotein (AFP). The literature does not provide a comprehensive understanding of the prognostic factors for HAC. Therefore, we present a novel nomogram to predict the cancer-specific survival (CSS) of patients with HAC.

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Article Synopsis
  • Neoadjuvant therapy, which includes PD-1 and PD-L1 inhibitors combined with platinum-based chemotherapy, has improved survival in patients with resectable non-small cell lung cancer (NSCLC), sparking debate over the effectiveness of administering this treatment before and after surgery versus just before surgery.
  • The study aims to compare the efficacy and safety of both neoadjuvant-adjuvant (before and after surgery) and neoadjuvant-only (before surgery) therapies in these patients.
  • Researchers conducted a systematic review of randomized clinical trials, analyzing event-free survival, overall survival, and treatment-related adverse events to determine which approach yields better outcomes for NSCLC patients.
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Background: Arthrofibrosis (AF) is a fibrotic joint disease resulting from excessive collagen production and fibrous scar formation after total knee arthroplasty (TKA). This devastating complication may cause consistent pain and dramatically reduction of functionality. Unfortunately, the conservative treatments to prevent the AF in the early stage are largely unknown due to the lack of specific biomarkers and reliable therapeutic targets.

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Background: High-performance total hip arthroplasty (THA) depends on the accurate position of components. However, femoral anteversion is variable, and current studies only used traditional instruments to evaluate it, such as protractor and spirit level with limited cases. This study aimed to identify the variability in the measured femoral native anteversion and intraoperative stem anteversion under different measurement methods, including intraoperative robotic method.

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Aims: The aim of this study was to evaluate the reliability and validity of a patient-specific algorithm which we developed for predicting changes in sagittal pelvic tilt after total hip arthroplasty (THA).

Methods: This retrospective study included 143 patients who underwent 171 THAs between April 2019 and October 2020 and had full-body lateral radiographs preoperatively and at one year postoperatively. We measured the pelvic incidence (PI), the sagittal vertical axis (SVA), pelvic tilt, sacral slope (SS), lumbar lordosis (LL), and thoracic kyphosis to classify patients into types A, B1, B2, B3, and C.

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  • Disitamab Vedotin is a new antibody-drug conjugate targeting HER2, showing promise when used alone or with immune checkpoint inhibitors for treating advanced or metastatic solid tumors.
  • A study from West China Hospital involved 49 patients treated between July 2019 and June 2023, with results indicating a median progression-free survival of 10 months, and a higher response rate when Disitamab Vedotin was combined with ICIs compared to monotherapy.
  • The findings suggest that Disitamab Vedotin, both alone and in combination with ICIs, offers good efficacy and tolerability, benefiting patients regardless of HER2 expression levels.
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  • Microplastics in aquatic environments can transport antibiotic resistance genes (ARGs) and form distinct layers, but little is known about their behavior in different depths.
  • The study revealed that biofilm on polylactic acid (PLA) microplastics had higher biomass than on polyethylene terephthalate (PET), with varying ARGs abundance based on water depth.
  • Overall, deeper waters showed increased species richness and nutrient changes, which may enhance ARG propagation, particularly linked to mobile genetic elements.
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Background: Baseline corticosteroids exposure is associated with inferior clinical outcomes in patients with non-small-cell lung cancer (NSCLC) treated with programmed cell death-1 (PD-1) axis blockade. Dexamethasone is a potent corticosteroid used in the prevention of chemotherapy-associated adverse events (CAAEs).

Objective: Since dexamethasone has immunosuppressive properties, this study attempted to elucidate its effects on the efficacy of immunotherapy plus chemotherapy in patients with non-squamous NSCLC.

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