Publications by authors named "Ji Ma"

Mixed matrix membranes, with well-designed pore structure inside the polymeric matrix via the incorporation of inorganic components, offer a promising solution for addressing CO emissions. Here, we synthesized a series of novel metal organic cages (MOCs) with aperture pore size precisely positioned between CO and N or CH. These MOCs were uniformly dispersed in the polymers of intrinsic microporosity (PIM-1).

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Objective: Patients with hematological malignancies have an elevated risk of developing pneumonia after contracting COVID-19. Lymphoma is the most prevalent hematologic malignancy. It is critical to identify patients at high risk of contracting COVID-19-associated pneumonia.

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The polyphenol-starch complex has become a hot research topic since it is evident that this modification method can alter the physicochemical properties of starch as well as improve its nutritional value. This work aimed to evaluate the effect of ginger polyphenol gingerols (GNs) and shogaols (SNs) on the structure of starch with different amylose content (WCS, CS, G56, G80). Textural and rheological results indicated that GNs and SNs had more pronounced inhibitory retrogradation effects for relative low-level amylose starches (WCS and CS) compared to relative high-level amylose starches (G56 and G80).

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Background: Several matrix metalloproteinases (MMPs) have been reported to be associated with intervertebral disc degeneration (IDD) in several previous studies. However, the causal relationship between MMPs and IDD remains unclear. In this study, Mendelian randomization (MR) was used to analyze the causal relationship between the plasma levels of multiple MMPs and the risk of IDD.

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Objective: This study aims to search, evaluate, and consolidate the best evidence for resistance exercise in maintenance hemodialysis patients, providing evidence-based support for the clinical implementation of resistance exercise in these patients.

Methods: We conducted a comprehensive search of literature in databases on resistance exercise for maintenance hemodialysis patients, including guidelines, expert consensus, evidence summaries, systematic reviews, and randomized controlled trials. The search spanned from the inception of the database to March 2023.

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Preeclampsia (PE) is a prevalent and severe pregnancy complication that significantly impacts maternal and perinatal health. Epidemiological studies and animal experiments have demonstrated that PE adversely affects the cardiovascular and nervous systems of offspring, increasing their risk of hypertension and renal pathology. However, the mechanisms underlying this increased risk remain unclear.

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Objective: Our study aimed to update demographic profiles of sinonasal adenocarcinoma (SNAC) between 2000 and 2020, identify independent prognostic risk factors, and devise a predictive nomogram for overall survival (OS).

Methods: Utilizing the Surveillance, Epidemiology, and End Results (SEER) database, cases of SNAC from 2000 to 2020 were analyzed for incidence trends. Univariate and multivariate Cox regression models helped pinpoint factors impacting patient survival.

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Background: Double-expressor lymphoma (DEL) has a poorer prognosis than other subtypes of diffuse large B-cell lymphoma (DLBCL). This study is a multicenter, prospective, single-arm, phase 2 clinical study initiated by investigators to evaluate the efficacy and safety of combined zanubrutinib with R-CHOP, which includes rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone for patients with DEL (stage II or more), as well as to explore factors related to efficacy preliminarily.

Methods: From November 2020 to July 2022, 48 newly diagnosed patients were enrolled.

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Background: Circadian rhythms in the immune system and anti-tumor responses are underexplored in cancer immunotherapy. Despite the success of immune checkpoint inhibitors (ICIs) in treating advanced biliary tract cancers (BTCs), not all patients benefit. This study examined whether the timing of ICI administration affects outcomes in advanced BTC patients.

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Loss to follow-up (LTFU) in antiretroviral therapy (ART) poses significant challenges in the management of HIV/AIDS. This study aims to identify socio-demographic and clinical factors influencing LTFU among patients undergoing ART in Luzhou, China, and to develop a predictive model for LTFU using Cox risk regression analysis. In this retrospective cohort study, data from 8,770 patients diagnosed with HIV infection between January 1, 2018 and December 31, 2022 who were enrolled in the national free ART program were analyzed.

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Background: FGFR2 fusions or rearrangements occur in 13%-20% of patients with intrahepatic cholangiocarcinoma (iCCA). Pemigatinib, a representative FGFR inhibitor, is commonly used for targeted therapy in such patients. Additionally, brain metastasis (BM) is extremely rare in advanced iCCA, and there is currently no standard treatment strategy for advanced iCCA patients with BM.

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Corticosteroids are the standard first-line treatment for primary immune thrombocytopenia (ITP), with a high initial response but unsatisfactory sustained response (SR). Additionally, corticosteroids usually lead to hyperglycaemia especially in patients with pre-existing type 2 diabetes mellitus (T2DM). Besides reducing the blood glucose levels, metformin was found to have immunomodulatory effects.

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For medically inoperable non-small cell lung cancer, microwave ablation (MWA) represents a super minimally invasive alternative treatment. However, tumor recurrence remains a concern. Here, it is demonstrated that the combination of MWA with Flt3L significantly inhibits tumor recurrence by CD8 central memory T (T)-like cell-dependent antitumor immune responses within the tumor-draining lymph nodes (TdLN).

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In this work, a high sensitivity fluorescence sensor system utilizing nitrogen-doped carbon dots (N-CDs) from bagasse was studied. A method was developed to examine methyl parathion (MP) via alkali hydrolysis. N-CDs were prepared via hydrothermal method from biomass bagasse.

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In this work, we predicted two different configurations of fullerene nanoribbons (quasi-hexagonal phase (qHP) and quasi-tetragonal phase (qTP)) based on two-dimensional fullerenes, with widths of 1, 2, and 3 fullerene units, respectively. Based on first-principles calculations and ab-initio molecular dynamics (AIMD), the thermal stability and optical properties of six fullerene nanoribbons were predicted. AIMD studies indicate that wider qHP nanoribbons (qHPs) exhibit better thermal stability, while increased temperatures lead to greater instability.

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We propose a dual-parameter surface plasmon resonance (SPR) sensor based on a simple, and effective incidence angle adjustment method. It is capable of simultaneously detecting the refractive index and temperature of a liquid. For conventional SPR fiber sensors, the resonance dip will be abnormally broadened in the near-infrared band, leading to difficulty in identifying the SPR dip by the spectrometer.

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Background: Aging often leads to changes in hormone levels, particularly testosterone, which is thought to significantly affect bone health in older males.

Objective: This study aimed to explore the link between testosterone levels and bone mineral density in men aged 60 and above.

Methods: Data from the National Health and Nutrition Examination Survey 2013-2014 were used.

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Developing cost-effective and disease-relevant animal models is essential for advancing biomedical research into human disorders. Here we investigate the feasibility of a pig model for autism spectrum disorder (ASD) using embryonic exposure to valproic acid (VPA), an antiepileptic drug known to increase ASD risk. We established experimental paradigms to assess the behavioral characteristics of these pig models.

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The mechanism, regioselectivity, and chemoselectivity in a gold-catalyzed oxidative cyclization of diynones with alcohols to give furan-3-carboxylate derivatives were explored by density functional theory (DFT). The obtained results revealed that the first step of the global reaction involves a nucleophilic attack of a pyridine--oxide derivative on the catalyst-ligated diynone, forming a vinyl intermediate that can isomerize to an α,α'-dioxo gold carbene upon the cleavage of the N-O bond. In the second step, a nucleophilic addition is also completed pyridine--oxide instead of an alcohol proposed in the experiment.

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Advances in nanotechnology offer promising strategies to overcome the limitations of single-drug therapies in hepatocellular carcinoma (HCC) and other cancers such as multidrug resistance and variable drug tolerances. This study proposes a targeted nanoparticle system based on a poly(β-aminoester) (PβAE) core and a hyaluronic acid (HA) shell, designed for the codelivery of doxorubicin (DOX) and indocyanine green (ICG) to effectively treat HCC. These nanoparticles demonstrated remarkable physicochemical and colloidal stability, pH- and temperature-responsive release, enhanced cellular uptake, and drug retention within tumors.

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Article Synopsis
  • The study aimed to create a nomogram using ultrasound data to predict the aggressiveness of thyroid papillary carcinoma (PTC) by analyzing diverse radiomics features.
  • A total of 471 patients were analyzed, with training and validation cohorts from different institutions, and various predictive factors such as age, nodule size, and elasticity measurements were used to develop the nomogram.
  • The final nomogram showed strong predictive capabilities with AUC values exceeding 0.890 in different validation cohorts, indicating it outperformed traditional ultrasound methods and offers significant clinical utility.
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Microwave (MW) heating shows higher efficiency in preparing wheat starch-stearic acid (WS-SA) complexes than the traditional water bath (WB) heating method, while the detailed "time-energy-quality" evaluations and the potential anti-digestion mechanism of the MW-processed WS-SA remain further exploration. In this study, 95 % time cost and 73 % energy consumption were saved when using MW processing WS-SA, and the MW-processed complexes were verified to show significantly higher relative crystallinity, short-range ordered structure degree, thermal stability, complex index, and resistant starch content. Molecular dynamics (MD) simulation demonstrated that MW treatment notably facilitated the binding rate of amylose and SA molecules, generating a tight and stable helical structure through hydrogen bonds and van der Waals forces.

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Unlocking the potential of topological order in many-body spin systems has been a key goal in quantum materials research. Despite extensive efforts, the quest for a versatile platform enabling site-selective spin manipulation, essential for tuning and probing diverse topological phases, has persisted. Here we utilize on-surface synthesis to construct spin-1/2 alternating-exchange Heisenberg chains by covalently linking Clar's goblets-nanographenes each hosting two antiferromagnetically coupled spins.

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Chemisorption on organometallic-based adsorbents is crucial for the controlled separation and purification of targeted systems. Herein, oriented 1D NH-CuBDC·HO metal-organic frameworks (MOFs) featuring accessible Cu sites are successfully fabricated by bottom-up interfacial polymerization. The prepared MOFs, as deliberately self-assembled secondary particles, exhibit a visually detectable coordination-responsive characteristic induced by the nucleophilic substitution and competitive coordination of guest molecules.

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