Publications by authors named "ChangCheng Zheng"

In order to figure out actual shaft resistance, axial forces of pile shaft have to be calculated based on strain test, which is a challenge for heat and steam cured prestressed high-strength concrete pipe piles. Disadvantages of three common methods of strain test and the empirical linear equation between axial force and strain are analyzed. A new strain test method, namely the slot-forming wood method, is proposed and applied in laboratory and field test.

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Anomalous thermal behaviors of excitonic luminescence in CsPbBr perovskite quantum dots (PQDs) were observed. It is found that the main luminescence peak originated from the excitonic radiative recombination assisted by the longitudinal-optical (LO) phonon, and its integrated intensity first declines as the temperature varies from 10 to 150 K and then turns to increase at ∼160 K, reaching a maximum value at 300 K. A model considering the thermal detrapping and transfer of electrons from a trap level is developed to interpret these abnormal thermal behaviors of the luminescence from the PQDs.

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Article Synopsis
  • The study focuses on measuring the avidity (strength of interaction) between natural killer (NK) cells and leukemia cells to understand immune responses better.
  • The protocol includes detailed steps for isolating and purifying cells from cord blood, as well as preparing the leukemia cell line KG-1a for testing.
  • The use of an acoustic force-based z-Movi cell avidity analyzer is highlighted to detect the avidity between the NK cells and KG-1a cells.
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Introduction: Acute promyelocytic leukemia (APL) is mainly due to the chromosome translocation (15; 17) (q22; q12), leading to the formation of PML-RARα fusion protein. However, some patients carried rare translocation involving RARα gene, and they were referred to as variant APL caused by the RAR family (RARα, RARB, and RARG) and partner genes. PLZF-RARα was a rare type of molecular genetic abnormality with unfavorable prognosis that has been reported in few cases in variant APL.

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Article Synopsis
  • The study investigated the treatment effectiveness and safety of a combination therapy using all-trans retinoic acid (ATRA), arsenic trioxide (ATO), and anthracyclines for high-risk acute promyelocytic leukemia (APL), along with maintenance therapy using ATRA and Realgar-formula (RIF).
  • Out of 21 high-risk APL patients treated, 100% achieved complete morphological remission (CR) and 66.7% achieved complete molecular remission (CMR) after the induction phase, showing high efficacy of the treatment protocol.
  • All patients experienced long-term survival (100% overall and event-free) and there were no relapses after an average follow-up of 66 months, although some
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TPO receptor agonists (TPO-RAs) are a class of clinical second-line regimens for the treatment of primary immune thrombocytopenia (ITP). It can promote megakaryocyte maturation and increase platelet production, but its effect on immunosuppressive cells in patients with ITP has not been explored. Sixty-two ITP patients and 34 healthy controls (HCs) were included in this study.

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Introduction: Reduced doses of emicizumab improve the affordability among patients in developing countries. However, the relationship between variant dose selection and efficacy in the real world of China is still unclear.

Aim: This study aimed to investigate the efficacy and safety of emicizumab especially in those on reduced dose regimens in a real-world setting.

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Article Synopsis
  • Natural killer (NK) cell immunotherapy shows potential in treating cancer but has limited effectiveness, prompting the search for new strategies.
  • Venetoclax, a drug originally designed to inhibit BCL-2, has been found to directly activate NK cells, increasing their ability to kill acute myeloid leukemia (AML) cells in both lab and living systems.
  • The study highlights a specific NK cell subgroup sensitive to venetoclax and reveals that the drug enhances NK cell energy metabolism, contributing to improved immune responses against cancer.
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Introduction: COVID-19 infection has brought new challenges to the treatment of adult patients with immune thrombocytopenia (ITP). In adult ITP patients, there have been no relevant reports exploring the incidence, clinical characteristics, and risk factors of platelet elevation after COVID-19 infection.

Materials And Methods: A total of 66 patients with previously diagnosed ITP from December 2022 to February 2023 in a single-center were collected and analyzed for this real-world clinical retrospective observational study.

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In this work, a detailed study was conducted of the temperature and excitation wavelength-dependent photoluminescence (PL) spectra of the chromium-doped yttrium aluminum garnet (Cr:YAG) transparent ceramic. Focusing on the two sets of zero-phonon lines (ZPLs) of the → transition in this material, the PL spectra are discovered to evolve significantly with respect to temperature and be highly dependent on the excitation wavelength. Compared to the continuous variation behavior with temperature, an increase in the excitation wavelength leads to a blueshift of the peak position within the regions of 450 nm to 465 nm, 465 nm to 490 nm, and 490 nm to 500 nm, and a sharp change in the PL position at the excitation wavelengths of 465 nm and 490 nm.

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Objective: QL0911, a recombinant human thrombopoietin mimetic peptide-Fc fusion protein, is a romiplostim (Nplate) biosimilar used to treat primary immune thrombocytopenia (ITP). This phase III study aimed to assess the efficacy and safety of QL0911 in adult patients with chronic primary ITP over a 24-week treatment period.

Methods: We conducted a double-blind, placebo-controlled, phase III study in patients diagnosed with primary ITP for at least 12 months who had received at least one first-line ITP treatment with no response or recurrence after treatment, or who relapsed after splenectomy at 44 sites in China.

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Introduction: The BCL-2 inhibitor venetoclax has been widely used in the treatment of acute myeloid leukemia (AML); however, AML patients treated with venetoclax gradually develop resistance. The exportin-1 (XPO1) inhibitor selinexor can synergistically promote the antileukemia activity of venetoclax, but the mechanism remains unclear.

Methods And Results: Annexin V/7-aminoactinomycin D assays were used to examine the effects of a combination of venetoclax and selinexor (VEN+SEL) on AML cell lines and primary AML cells.

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Kabuki syndrome (KS) is a rare multisystem-affecting genetic disorder, and usually accompanied with autoimmune disorders such as immune thrombocytopenic purpura (ITP). Here, we report a 16-year-old patient with Kabuki syndrome with ITP and observe the therapeutic effect of TPO agonist hetrombopag olamine tablets. The duration of maintenance therapy and follow up were both 17 months.

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In this paper, the giant tunability of thermal behaviors, i.e., from thermal deterioration to substantial growth, is firmly demonstrated for the vibronic luminescence of Mn ions in fluoride phosphors.

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Introduction: We firstly investigate based on 2022 European Leukemia Net (ELN) risk stratification, whether standard-dose cytarabine based multiagent sequential chemotherapy (SDMSC) is more beneficial than high-dose cytarabine (HDAC) monotherapy in consolidation for the survival of adult acute myeloid leukemia (AML) patients.

Methods: One hundred and eighty-three AML patients with complete remission (CR) were evaluated.

Results And Discussion: The 3-year relapse rate was 33.

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This study aimed to evaluate whether the addition of hypomethylating agents (HMA) to low-intensity chemotherapy can enhance the clinical efficacy of induction treatment for elderly acute myeloid leukemia (AML) patients who are unsuitable for standard induction therapy. This study retrospectively analyzed 117 patients over 60 years old who were initially diagnosed with AML and received low-intensity induction treatment in the Department of Hematology in Anhui provincial hospital from January 2015 to December 2020. Twenty-three patients were excluded, and the remaining 94 patients were divided into two groups according to the selection of induction regimens.

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Raman spectra of two series of InAs/AlAs short-period superlattices were measured at room temperature to investigate the impact of strain on the phonon modes taking into consideration the confinement effect and interface mode. The evolution of strain in the InAs layer and the AlAs layer was studied in (InAs)/(AlAs) superlattices grown at various temperatures (400-550 °C). While the strain existed in the AlAs layer remained almost constant, the strain in the InAs layer varied significantly as the growth temperature increased from 500 to 550 °C.

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Umbilical cord blood (UCB) transplants (UCBTs) are becoming increasingly common in the treatment of a variety of hematologic and nonhematologic conditions. The T cells from UCB are naïve T cells, which have not yet been exposed to antigens and therefore do not contain T cells with specific immune functions against viruses. Cytomegalovirus (CMV) infections occur in more than 80% of patients after UCBT compared to other types of transplantation.

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Background: There is great uncertainty in the treatment of elderly patients with acute myeloid leukemia (AML), which leads to great challenges in treatment decision. The aim of this study is to find more suitable induction therapy and consolidation therapy for elderly AML patients.

Methods: A total of 149 consecutive newly diagnosed elderly AML patients (aged ≥60 years) who received induction chemotherapy in our medical center from January 2015 to December 2019 were retrospectively analyzed.

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In this study, a significant improvement of deep-red luminescence was successfully achieved via the substitution approach in the -activated phosphor. The optimal doping level was determined by studying luminescence concentration quenching behavior. The measured photoluminescence (PL) spectrum showed five distinct vibronic structures with the main peak centered at 712 nm.

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Background: The efficacy of hetrombopag in Chinese patients with immune thrombocytopenia (ITP) has been demonstrated in a randomized, double-blind, placebo-controlled, multicenter, phase III trial (NCT03222843).

Objective: This study aimed to report comprehensive data on a ≤6-week dose tapering to withdrawal (Stage 3) and an additional 24-week long-term extension period (Stage 4) in this phase III trial.

Patients/methods: Patients who fulfilled the screening criteria were eligible to enter Stage 3 or 4.

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Purpose: We report the efficacy and safety of venetoclax plus decitabine-based treatment in heavily pre-treated relapsed or refractory acute myeloid leukaemia (RR-AML) in a real-world setting.

Patients And Methods: There were 22 patients in this study and the median age was 47.5 (12-84) years old, including 11 males and 11 females.

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Introduction: SCT800 is a recombinant human B-domain-deleted coagulation factor VIII (BDDrFVIII) developed in China.

Aim: To evaluate the repeat pharmacokinetics (PKs), efficacy, and safety of SCT800 in previously treated Chinese adolescent and adult patients with severe haemophilia A.

Methods: A phase III, multicentre, prospective, open-label, single-arm trial was conducted at 12 medical centres.

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Background: Although the use of cord blood transplantation (CBT) is becoming more frequent in acute leukemia, considering the relationship between the low stem cell dose and graft failure, whether use of CBT for adolescents and young adults (AYAs) is appropriate remains uncertain.

Methods: A retrospective registry-based analysis of clinical outcomes and immune reconstitution was conducted for 105 AYAs and 187 children with acute leukemia who underwent single-unit CBT using myeloablative conditioning (MAC) without antithymocyte globulin (ATG).

Results: Outcomes were similar between AYAs and children, except for nonrelapse mortality (NRM) and recovery rates of neutrophils and platelets.

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Objective: As first-line treatments for newly diagnosed adult immune thrombocytopenia (ITP), high-dose dexamethasone (HD-DXM) and conventional-dose prednisone achieve good initial responses, but their long-term efficacy is poor. To improve the long-term outcome of newly diagnosed ITP, we explored the efficacy and safety of HD-DXM with sequential prednisone maintenance therapy.

Methods: This retrospective study in a real-world setting assessed 72 consecutive newly diagnosed ITP patients administered first-line HD-DXM with sequential prednisone maintenance therapy from 1 June 2016 to 31 December 2019.

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