Publications by authors named "Jian-Xin Song"

The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that suddenly emerged at the end of December 2019 and caused coronavirus disease 2019 (COVID-19) continues to afflict humanity, not only seriously affecting healthcare systems but also leading to global social and economic imbalances. As of August 2022, there were approximately 580 million confirmed cases of COVID-19 and approximately 6.4 million confirmed deaths due to this disease.

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  • The study aimed to assess the effectiveness of F-FDG PET/CT scans in distinguishing lymphoma from other causes in patients experiencing fever of unknown origin (FUO) with swollen lymph nodes.
  • Researchers conducted a prospective study involving 163 patients, analyzing PET/CT results alongside other diagnostic methods like lymph-node biopsies to compare lymphoma and benign cases.
  • Findings indicated that while PET/CT had moderate sensitivity (81%) and low specificity (48%) for diagnosing lymphoma, a scoring model based on PET/CT readings and clinical factors showed high accuracy, suggesting it could serve as a reliable noninvasive diagnostic tool.
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  • This study investigates how F-FDG PET/CT imaging can help distinguish between different causes of fever of unknown origin (FUO) by analyzing the metabolic characteristics and clinical parameters of patients.
  • A total of 524 patients were studied, with diagnostic models developed using the data from 369 patients and validated with another 155.
  • The study found that combining PET/CT imaging with specific clinical factors significantly improves the ability to identify infections, malignancies, and inflammatory diseases, showing high accuracy in both testing and validation groups.
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Phototheranostics constitute an emerging cancer treatment wherein the core diagnostic and therapeutic functions are integrated into a single photosensitizer (PS). Achieving the full potential of this modality requires being able to tune the photosensitizing properties of the PS in question. Structural modification of the organic framework represents a time-honored strategy for tuning the photophysical features of a given PS system.

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Background: Coronavirus disease 2019 (COVID-19) is a serious and even lethal respiratory illness. The mortality of critically ill patients with COVID-19, especially short term mortality, is considerable. It is crucial and urgent to develop risk models that can predict the mortality risks of patients with COVID-19 at an early stage, which is helpful to guide clinicians in making appropriate decisions and optimizing the allocation of hospital resoureces.

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  • The study investigates the occurrence of infection-associated hemophagocytic syndrome (IAHS) in critically ill COVID-19 patients, analyzing data from 268 patients between February 2020 and February 2020.
  • It finds that 17 patients (6.3%) met the criteria for secondary hemophagocytic lymphohistiocytosis (sHLH), all of whom unfortunately died soon after diagnosis.
  • The research highlights the high mortality rate associated with sHLH in COVID-19 patients, suggesting that SARS-CoV-2 may trigger this severe condition and emphasizing the importance of early detection for better patient outcomes.
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The pandemic of the coronavirus disease 2019 (COVID-19) has become a global public health crisis. The symptoms of COVID-19 range from mild to severe, but the physiological changes associated with COVID-19 are barely understood. In this study, we performed targeted metabolomic and lipidomic analyses of plasma from a cohort of patients with COVID-19 who had experienced different symptoms.

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  • The study aimed to enhance the effectiveness of F-FDG PET/CT scans for diagnosing fever of unknown origin (FUO) and inflammation of unknown origin (IUO) in Chinese patients by integrating clinical parameters.
  • A total of 253 FUO/IUO patients were analyzed, revealing that specific clinical parameters significantly improved the accuracy of diagnoses, particularly in groups with local uptake lesions and non-specific uptake.
  • The combination of clinical factors increased diagnostic accuracy for malignancy and infection predictions, showcasing the importance of integrating clinical data with imaging results.
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Macrophages within tissues display a strong plastic ability in respond to environmental cues in both physiologic influences and disease. However, the macrophage phenotype and its distribution in the bone marrow biopsies (BMB) samples of human acute leukemia (AL) remain poorly understood. In this study, 97 BMB samples of patients with acute leukemia and 30 iron-deficiency anemias (IDA) as control group were evaluated with immunohistochemistry.

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Chrysin amino acid derivatives were synthesized to evaluate for their antiproliferative activities. Among them, -(7-((5-hydroxy-4-oxo-2-phenyl-4H-chromen-7-yl)oxy)valeryl)-L-leucine () displayed the most remarkable inhibitory activities against MCF-7 cells with IC values of 16.6 μM.

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  • * A diagnostic tool was developed through analysis of FUO patients in three Chinese hospitals, using logistic regression to create a scoring system based on clinical and lab evaluations.
  • * This tool showed promising results with an AUC of 0.83 for distinguishing causes of FUO, indicating it can reliably help predict whether the fever is due to infection or another reason.
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Amino acid derivatives containing chrysin were synthesized for evaluating their anticancer effects. Among them, compound -(7-((5-hydroxy-4-oxo-2-phenyl-4H-chromen-7-yl)oxy)heptanoyl)-L-isoleucine () displayed the most potent antiproliferative activity against MGC-803 cells with IC value of 20.0 μM.

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Adipose‑derived stem cells (ADSCs) are mesenchymal stem cells that are often used in regenerative medicine. Maintaining ADSC viability is important, as this optimizes the curative effects of cell therapy. However, the optimal conditions for cell viability preservation remain unknown.

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  • The study focused on identifying factors that indicate pathogen invasion to create a model that distinguishes infectious from non-infectious causes of fever of unknown origin (FUO).
  • Researchers enrolled 431 patients from January 2014 to September 2017 and identified 26 variables across four categories: host, epidemiological, behavioral, and iatrogenic factors.
  • A predictive model was developed using multivariate logistic regression, achieving an AUC of 0.72, with a sensitivity of 0.71 and specificity of 0.63, proving to be useful for screening FUO causes.
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The applied value of serum hepcidin in differential diagnosis of infection fevers versus tumor fevers was explored. A total of 432 fever patients were selected according to the domestic fever of unknown origin (FUO) diagnostic criteria from our hospital between June 2010 and November 2013. Venous blood samples were taken on the day 1, 5, 10 after admission.

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Hepatitis associated anti-tuberculous treatment (HATT) has been a main obstacle in managing patients co-infected with Mycobacterium tuberculosis and hepatitis B virus (HBV). Therefore, we evaluated the factors related to the severity of adverse effects during HATT, especially those associated with liver failure. A retrospective study was carried out at Tongji Hospital from 2007 to 2012.

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Macrophages have emerged as a key player in tumor biology. However, their number and phenotype in human bone marrow of biopsy (BMB) samples of chronic myeloid leukemia (CML) and their association with disease progression from an initial chronic phase (CP) to accelerated phase (AP) to advanced blast phase (BP) are still unclear. BMB samples from 127 CML patients and 30 patients with iron-deficiency anemia (IDA) as control group were analyzed by immunohistochemistry.

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Background: Usher syndrome (USH) is an autosomal recessive disorder characterized by hearing impairment and vision dysfunction due to retinitis pigmentosa. Phenotypic and genetic heterogeneities of this disease make it impractical to obtain a genetic diagnosis by conventional Sanger sequencing.

Methods: In this study, we applied a next-generation sequencing approach to detect genetic abnormalities in patients with USH.

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To gain insights into the effect of MexB gene under the short interfering RNA (siRNA), we synthesized 21 bp siRNA duplexes against the MexB gene. RT-PCR was performed to determine whether the siRNA inhibited the expression of MexB mRNA. Changes in antibiotic susceptibility in response to siRNA were measured by the E-test method.

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Background: Intramedullary nails had been widely used in the treatment of long-bone fractures because of less interference of fractures and center bearing biomechanical advantage. However, it had been also found many shortcomings such as broken nails, delayed healing and was modified in order to achieve better efficacy and reduce complications. The aim of the present study is to compare the efficacy of rotary self-locking intramedullary nails (RSIN) with that of interlocking intramedullary nails (IIN) in the treatment of long-bone fractures.

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Migration of a bullet to a distant part of the body after a gunshot is rarely observed in the clinical setting, and migration to the heart is even rarer. There are usually no clear symptoms or signs from migration of a bullet. The bullet can be easily missed and sometimes identified in a review examination.

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Aim: to study the effect of human bone marrow derived mesenchymal stem cells (hMSCs) on cytokines secretion (IFN-γ, TNF-α, IL-10, IL-6, IL-4 and IL-2) of allogeneic DC-CIK cells (in co-culture of CIK cells with DC), which investigate the mechanism of immunoregulation induced by hMSCs.

Methods: the hMSCs from bone marrow were isolated, expanded and identified by cell morphology, differentiation into neuron-like cells with NSE, fat-like cells with red-oil stain, and expression of CD29, CD44. The DC and CIK cells from peripheral blood were isolated, expanded and identified by CD1α, HLA-DR or CD3(+);CD56(+);.

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Objective: To investigate the effect of andrographolide on virulence factors production in Pseudomonas aeruginosa.

Method: Growth rate, pyocyanin, proteolytic activity and elastase activity were measured with or without the presence of andrographolide. The effect of andrographolide on pyocyanin production, proteolytic activity and elastase activity in PAO-JP2 was investigated simultaneously.

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Synopsis of recent research by authors named "Jian-Xin Song"

  • - Jian-xin Song's recent research predominantly focuses on the clinical characteristics and diagnostic approaches for infectious diseases, particularly COVID-19, highlighting acute responses and long-term implications on health systems.
  • - He has developed and validated diagnostic models using F-FDG PET/CT imaging to differentiate between lymphoma and other fever-related conditions, indicating the role of clinical parameters in enhancing diagnostic accuracy.
  • - Additionally, the research includes insights into the biological mechanisms of diseases, such as the phenotypic characterization of macrophages in leukemia and the synthesis of chrysin derivatives aimed at targeting cancer cell proliferation, showcasing an interdisciplinary approach in health and medical science.