Publications by authors named "Qing-qing Zhang"

This study aims to investigate the effect of Zhishi Xiebai Guizhi Decoction on the phenotypic transformation of pulmonary artery smooth muscle cells(PASMCs) in rats with hypoxic pulmonary hypertension(HPH). Healthy SPF SD rats were randomly assigned to five groups: control group, hypoxia model group, hypoxia + low-dose Zhishi Xiebai Guizhi Decoction group(440 mg·kg~(-1)·d~(-1)), hypoxia + high-dose Zhishi Xiebai Guizhi Decoction group(880 mg·kg~(-1)·d~(-1)), and hypoxia + sildenafil group(30 mg·kg~(-1)·d~(-1)), with right rats in each group. Rats in the hypoxia model and hypoxia + drug groups were exposed to a hypobaric oxygen chamber with a simulated altitude of 5 000 m to induce the PH model.

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Objective: To evaluate the injuries of the recurrent laryngeal nerve (RLN), superior laryngeal nerve (SLN), and their innervated laryngeal muscles on the non-paralyzed sides in patients with idiopathic vocal cord paralysis (IVCP).

Methods: Eighty-four cases of patients with IVCP were evaluated using stroboscopic laryngoscopy, voice analysis, and laryngeal electromyography(LEMG). Concurrently, twenty-eight cases involving healthy volunteers without vocal cord paralysis were enrolled and examined using LEMG during the same period.

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Article Synopsis
  • ACL injuries are common among athletes, and while ACL reconstruction surgery generally leads to good recovery, some patients may suffer from knee stiffness due to joint fibrosis, which affects mobility and causes pain.
  • Recent studies have explored the risk factors and mechanisms behind knee fibrosis after ACL surgery, focusing on pre-, intra-, and post-operative aspects.
  • This review highlights advancements in understanding knee fibrosis, evaluates treatment methods for prevention and management, and suggests future research directions for better outcomes.
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Surgery of jawbones has a high potential risk of causing complications associated with temporomandibular joint disorder (TMD). The objective of this study was to investigate the effects of two drive modeling methods on the biomechanical behavior of the temporomandibular joint (TMJ) including articular disc during mandibular movements. A finite element (FE) model from a healthy human computed tomography was used to evaluate TMJ dynamic using two methods, namely, a conventional spatial-oriented method (displacement-driven) and a compliant muscle-initiated method (masticatory muscle-driven).

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Objective: We aimed to compare the clinical and endoscopic characteristics of sessile serrated lesions (SSLs) with dysplasia/carcinoma (SSLD/Cs) and SSLs without dysplasia in this systematic review and meta-analysis.

Methods: MEDLINE, EMBASE, and Cochrane Library databases and Clinicaltrials.gov were searched for relevant studies published up to August 28, 2023.

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Article Synopsis
  • - The article discusses a reaction called the asymmetric Michael addition, which involves 2-hydroxy-1,4-naphthoquinone and indole-3-ones, using cinchona alkaloids as catalysts.
  • - This reaction allows for the creation of 23 new types of molecules called indolin-3-ones that have a naphthoquinone unit attached at a specific position (C2) of the indole structure.
  • - The synthesis occurs under mild conditions and yields impressive results, showing up to 88% efficiency, 98% selectivity, and a significant preference in product formation (>20:1 ratio).
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Organophosphorus-fluorine compounds are of significant utility across biology, pharmacy, and chemical synthesis. Here, we introduce a photocatalyzed oxidative-fluorination approach employing SF as a formal electrophilic fluorinating reagent. It offers an innovative pathway to forge P(O)-F bonds.

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Cadmium (Cd) pollutes 7.0 % of China's land area. This study examined the potential of Houttuynia cordata for Cd phytoremediation because of its ability to accumulate Cd in its growth matrix.

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Aim: To evaluate the relationship of 25-hydroxyvitamin D (25(OH)D), lipoprotein-associated phospholipase A2 (Lp-PLA2), and coronary artery disease (CAD) in type 2 diabetes mellitus (T2DM) patients with no history or symptoms of cardiovascular disease.

Methods: The study identified 66 pairs of T2DM patients with and without CAD using propensity score matching. All subjects performed coronary computed tomography angiography (CCTA).

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Background: Dysphoria and despondency are prevalent psychological issues in patients undergoing Maintenance Hemodialysis (MHD) that significantly affect their quality of life (QOL). High levels of social support can significantly improve the physical and mental well-being of patients undergoing MHD. Currently, there is limited research on how social support mediates the relationship between dysphoria, despondency, and overall QOL in patients undergoing MHD.

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The present study aimed to investigate the effect of human umbilical cord mesenchymal stem cells (MSCs)-derived exosomes (MSCs-Exo) on mice with hypoxic pulmonary hypertension (HPH). MSCs were isolated and cultured from human umbilical cords under aseptic conditions, and exosomes were extracted from the supernatants and identified. Healthy SPF C57BL/6 mice were randomly divided into three groups: normoxic group, hypoxic group, and hypoxic+MSCs-Exo group.

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Article Synopsis
  • The study aimed to evaluate nerve damage in patients with idiopathic vocal cord paralysis (IVCP) by comparing left-sided and right-sided cases.
  • A total of 84 patients were analyzed using various methods like laryngoscopy and electromagnetic tests, focusing on differences based on the side of paralysis and disease duration.
  • Results showed no significant differences in voice indicators or nerve function between the sides, indicating similar levels of damage in both left and right paralysis when accounting for disease duration.*
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Background: For patients with heart failure combined with complete left bundle branch block, cardiac resynchronization therapy is an important therapeutic method. If these patients also have atrial tachycardia, how to choose a treatment strategy deserves discussion.

Case Presentation: A Chinese woman in her early 70s was admitted due to recurrent episodes of chest distress and asthma for 1 year.

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  • The study aimed to evaluate and compare the effectiveness of different treatments for laryngeal contact granulomas (LCG) by analyzing 45 patients from Xi'an Jiaotong University.
  • Three treatment groups were analyzed: acid suppression alone, hormone injection with acid suppression, and surgery with acid suppression, focusing on treatment effectiveness and healing time.
  • Results showed that hormone injection combined with acid suppression significantly improved healing rates and reduced healing time compared to acid suppression alone, while granuloma size was larger in patients with hoarseness.
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Aim: We investigate the association of mammalian sterile line 20-like kinase 1 (MST1) in the first trimester with the risks of gestational diabetes mellitus (GDM) and adverse pregnancy outcomes.

Methods: Pregnancies were recruited during their first antenatal care visit between 8 and 12 gestational weeks. These pregnancies underwent an oral glucose tolerance test between 24 and 28 gestational weeks and were followed up until delivery.

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The imbalance of immune response plays a crucial role in the development of diseases, including glioblastoma. It is essential to comprehend how the innate immune system detects tumors and pathogens. Endosomal and cytoplasmic sensors can identify diverse cancer cell antigens, triggering the production of type I interferon and pro-inflammatory cytokines.

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Objectives: In this study we aimed to evaluate the nocebo response rate in patients with functional dyspepsia (FD) and to explore its influencing factors.

Methods: A literature search of the EMBASE, PubMed, and Cochrane Library databases was conducted for all articles published up to March 2021. Randomized, parallel-designed, placebo-controlled trials on pharmacological interventions for patients with FD were included.

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Three new labdane-type diterpenoids, calcaratarin E, villosumtriol, and 12-epi-villosumtriol (1-3) were isolated from the fruits of Amomum villosum, along with seven known diterpenoids (4-10). Through comprehensive analysis of chemical evidence and spectral data including UV, 1D and 2D NMR, HR-ESI-MS, IR, and X-ray crystallography, the structures of these novel compounds were successfully determined. Additionally, the inhibitory effects of compounds 2-10 on NO production in lipopolysaccharide (LPS)-induced RAW264.

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  • The study aimed to identify risk factors for the recurrence of laryngeal amyloidosis (LA) by analyzing clinical data from patients treated at a specific hospital over nearly 13 years.
  • Out of 44 patients, most had localized LA in one area of the larynx, with the glottic region being the most affected; only a small percentage experienced recurrences post-surgery, typically around 24.5 months after treatment.
  • Subglottic involvement was identified as a significant independent risk factor for recurrence, especially when it presented as diffuse deposition, leading to notably shorter recurrence times.
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  • - The study investigates a new mechanism for regulating protein function, focusing on how hydrogen sulfide (HS) interacts with the active-site copper of the enzyme Cu/Zn-SOD.
  • - Researchers used various methods like radiolabeled binding assays and crystallography to show that HS binding alters the forces and geometry at the active site, improving the reaction with superoxide radicals.
  • - The physiological role of HS was tested in both lab and live models, revealing that its cardioprotective effects rely on the enzyme Cu/Zn-SOD.
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Dysfunction and death of neuronal cells are cardinal features of degenerative retinal diseases that are known to arise as the disease progresses. Increasingly evidence suggests that abnormal expression of brain-derived neurotrophic factor (BDNF) may serve as an obligatory relay of the dysfunction and death of neuronal cells in degenerative retinal diseases. Although disorder of BDNF, whether depletion or augmentation, has been connected with neuronal apoptosis and neuroinflammation, the exact mechanisms underlying the effect of impaired BDNF expression on degenerative retinal diseases remain unclear.

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Predicting drug synergy is critical to tailoring feasible drug combination treatment regimens for cancer patients. However, most of the existing computational methods only focus on data-rich cell lines, and hardly work on data-poor cell lines. To this end, here we proposed a novel few-shot drug synergy prediction method (called HyperSynergy) for data-poor cell lines by designing a prior-guided Hypernetwork architecture, in which the meta-generative network based on the task embedding of each cell line generates cell line dependent parameters for the drug synergy prediction network.

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Objective: To explore the effect of obstructive sleep apnea (OSA) on the negative pressure and acoustic compliance of middle ear cavity in children.

Methods: The clinical data of 258 children with suspected OSA, who complained of mouth breathing or snoring at night in the Department of Otolaryngology Head and neck surgery of the Second Affiliated Hospital of Xi'an Jiao Tong University from August 2020 to March 2022, were enrolled and analyzed retrospectively. The OSA and otitis media with effusion (OME) were determined by polysomnography (PSG) and acoustic immittance examination, respectively.

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Background: Colorectal cancer (CRC) is the third most common cancer worldwide. Current treatments, including surgery, radiotherapy, and chemotherapy, are limited by severe side effects and the development of resistance.

Objective: Therefore, it is important to find additional therapies to combat the problem.

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Current machine learning-based methods have achieved inspiring predictions in the scenarios of mono-type and multi-type drug-drug interactions (DDIs), but they all ignore enhancive and depressive pharmacological changes triggered by DDIs. In addition, these pharmacological changes are asymmetric since the roles of two drugs in an interaction are different. More importantly, these pharmacological changes imply significant topological patterns among DDIs.

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