Publications by authors named "H-R Zhao"

Background: Hepatic ischemia/reperfusion (I/R) injury (HIRI) is an intrinsic phenomenon observed in the process of various liver surgeries. Unfortunately, there are currently few options available to prevent HIRI. Accordingly, we aim to explore the role and key downstream effects of B-cell lymphoma 6 (BCL6) in hepatic I/R (HIR).

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Purpose: To investigate the protective effect and mechanism of enhanced expression of endogenous macrophage migration inhibitory factor (MIF) on cardiac ischemia-reperfusion (I/R) injury.

Methods: A recombinant double-stranded adeno-associated virus serotype 9 with MIF or green fluorescent protein (GFP) genes (dsAAV9-MIF/GFP) was transduced into mice and neonatal rat ventricular myocytes (NRVMs). The models of cardiac 60 min ischemia and 24 h reperfusion and 12 h hypoxia/12 h reoxygenation (H/R) were established in mice and NRVMs, respectively.

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The current opioid crisis urgently calls for developing non-addictive pain medications. Progress has been slow, highlighting the need to uncover targets with unique mechanisms of action. Extracellular adenosine alleviates pain by activating the adenosine A1 receptor (A1R).

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Background: Myocardial ischemia/reperfusion injury (MI/RI) can lead to impaired cardiac function. Quercetin (Que) has a positive effect and improves MI/RI. Sirtuin-3 (Sirt3) is a deacetylase that ameliorates oxidative stress and is associated with MI/RI.

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M-N-C single-atom catalysts (MN) have gained attention for their efficient use at the atomic level and adjustable properties in electrocatalytic reactions like the ORR, OER, and HER. Yet, understanding MN's activity origin and enhancing its performance remains challenging. Edge-doped substituents profoundly affect MN's activity, explored in this study by investigating their interaction with MN metal centers in ORR/OER/HER catalysis (Sub@MN, Sub = B, N, O, S, CH, NO, NH, OCH, SO; M = Fe, Co, Ni, Cu).

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To examine the role of CITED2 in myocardial ischemia/reperfusion injury (MIRI) in a cell model and uncover the mechanism, hypoxia/reoxygenation (H/R) -stimulated H9C2 cell model was utilized as a MIRI cell model. Quantitative polymerase chain reaction (qPCR) as well as immunoblot assays were carried out to determine the expression of CITED2 in the MIRI cell model. MTT as well as lactate dehydrogenase assays were employed to detect the survival of H/R-stimulated H9C2 cells.

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Article Synopsis
  • * A total of 4922 strains were examined, revealing that 384 (7.8%) were H-R, with genetic mutations identified in many strains, including the Ser315Thr substitution and the -15C>T mutation, which are associated with varying levels of isoniazid resistance.
  • * The results showed that ser315Thr was the most common mutation, with significant resistance rates to other drugs like streptomycin, but minimal resistance to amikacin; the study suggests
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Background: Immunosuppressive therapy (IST) with horse or rabbit anti-human thymocyte immunoglobulin (h-/r-ATG) and hematopoietic stem cell transplantation (HSCT) are two baseline treatments for severe aplastic anemia (SAA) and transfusion-dependent non-severe aplastic anemia (TD-NSAA) patients. Addition of thrombopoietin receptor agonists (TPO-RAs) to standard IST therapy (h-/r-ATG) has greatly improved the survival of SAA, whereas porcine anti-lymphocyte globulin (p-ALG) combined with TPO-RAs still had a matter of debate.

Methods: We retrospectively compared the data of 48 AA patients in our center between 2020 and 2022, 23 AA patients received with p-ALG ± TPO-RAs, 25 AA patients underwent matched sibling donor (MSD-) or haploidentical (haplo-) HSCT.

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Objective: Renal ischemia/reperfusion injury (IRI) is a major cause of acute kidney injury (AKI), which is associated with high incidence and mortality. AST-120 is an oral carbonaceous adsorbent that can alleviate kidney damage. This study aimed to explore the effects of AST-120 on renal IRI and the molecular mechanism.

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: Protein-based pneumococcal vaccines (PBPVs) may offer expanded protection against and tackle the antimicrobial resistance crisis in pneumococcal infections. This study examined the safety and immunogenicity in healthy adults vaccinated with three doses of a protein-based pneumococcal vaccine containing pneumococcal surface protein A (PspA) (PRX1, P3296 and P5668) and in combination with a recombinant detoxified pneumolysin protein (PlyLD). : This phase Ia randomized, double blind, placebo-controlled clinical study enrolled healthy adults aged 18-49 years.

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Fibronectin type III domain containing 4 (FNDC4) is highly homologous with FNDC5, which possesses various cardiometabolic protective functions. Emerging evidence suggests a noteworthy involvement of FNDC4 in fat metabolism and inflammatory processes. This study aimed to characterize the role of FNDC4 in myocardial ischemia/reperfusion (MI/R) injury and decrypt its underlying mechanisms.

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Reperfusion strategies, the standard therapy for acute myocardial infarction (AMI), may result in ischemia/reperfusion (I/R) damage. Suppressor of cytokine signaling1 (SOCS1) exerts a cardioprotective function in myocardial I/R damage. Here, we investigated epigenetic modulators that deregulate SOCS1 in cardiomyocytes under hypoxia/reoxygenation (H/R) conditions.

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Background: Ferroptosis has been proven to contribute to the progression of myocardial ischemia/reperfusion (I/R) injury and can be inhibited or promoted by ATF3. Short-chain fatty acids (SCFAs) have shown benefits in various cardiovascular diseases with anti-inflammatory and antioxidant effects. However, the impact of SCFAs on ferroptosis in ischemic-stimulated cardiomyocytes remains unknown.

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Background: Few antiviral therapies have been studied in patients with coronavirus disease 2019 (COVID-19) and kidney impairment. Herein, the efficacy, safety, and pharmacokinetics of remdesivir, its metabolites, and sulfobutylether-β-cyclodextrin excipient were evaluated in hospitalized patients with COVID-19 and severe kidney impairment.

Methods: In REDPINE, a phase 3, randomized, double-blind, placebo-controlled study, participants aged ≥12 years hospitalized for COVID-19 pneumonia with acute kidney injury, chronic kidney disease, or kidney failure were randomized 2:1 to receive intravenous remdesivir (200 mg on day 1; 100 mg daily up to day 5) or placebo (enrollment from March 2021 to March 2022).

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Clinical observations suggest that acute kidney injury (AKI) occurs in approximately 20-50% of hospitalized cirrhotic patients, suggesting a link between the liver and kidney. Bone morphogenetic protein 9 (BMP9) is a protein produced primarily by the liver and can act on other tissues at circulating systemic levels. Previous studies have demonstrated that controlling abnormally elevated BMP9 in acute liver injury attenuates liver injury; however, reports on whether BMP9 plays a role in liver injury-induced AKI are lacking.

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Myocardial ischemia/reperfusion (MI/R) is a common cardiovascular disease that seriously affects the quality of life and prognosis of patients. In recent years, matrine has attracted widespread attention in the treatment of cardiovascular diseases. This study designed, synthesized, and characterized 20 new matrine derivatives and studied their protective effects on ischemia-reperfusion injury through in vivo and in vitro experiments.

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Panax ginseng is reputed to be capable of replenishing healthy Qi and bolstering physical strength, and P. notoginseng can resolve blood stasis and alleviate pain. P.

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Background: Myocardial ischemia-reperfusion injury (I/RI) is a major cause of perioperative cardiac-related adverse events and death. Studies have shown that sevoflurane postconditioning (SpostC), which attenuates I/R injury and exerts cardioprotective effects, regulates mitochondrial dynamic balance via HIF-1α, but the exact mechanism is unknown. This study investigates whether the PI3K/AKT pathway in SpostC regulates mitochondrial dynamic balance by mediating HIF-1α, thereby exerting myocardial protective effects.

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Article Synopsis
  • The study investigates how Oridonin (Ori), an inhibitor of NLRP3, affects liver ischemia reperfusion injury (IRI) by targeting macrophage pyroptosis, a form of programmed cell death.
  • In experiments using mice and liver macrophages, Ori was found to reduce pyroptosis and liver damage by disrupting the interaction between PKM2 and NLRP3 during hypoxia/reoxygenation conditions.
  • The results suggest that Ori has protective qualities against liver IRI, making it a possible new treatment option by targeting the PKM2/NLRP3 pathway.
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Aims: Electrocardiogram (ECG) is widely considered the primary test for evaluating cardiovascular diseases. However, the use of artificial intelligence (AI) to advance these medical practices and learn new clinical insights from ECGs remains largely unexplored. We hypothesize that AI models with a specific design can provide fine-grained interpretation of ECGs to advance cardiovascular diagnosis, stratify mortality risks, and identify new clinically useful information.

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  • Idiopathic pulmonary fibrosis (IPF) is a serious lung disease with high mortality and limited treatment options; currently, nintedanib is the only drug available specifically for this condition.
  • This study investigates the effects of pazopanib, a drug primarily used for cancer, on bleomycin-induced pulmonary fibrosis, aiming to uncover its potential as an antifibrotic treatment.
  • Results indicate that pazopanib can reduce collagen buildup and improve lung function by inhibiting TGF-β1 signaling pathways, which are involved in myofibroblast activation, autophagy, and extracellular matrix formation.
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S100 calcium-binding protein 16 (S100A16) is implicated in both chronic kidney disease (CKD) and acute kidney injury (AKI). Previous research has shown that S100A16 contributes to AKI by facilitating the ubiquitylation and degradation of glycogen synthase kinase 3β (GSK3β) and casein kinase 1α (CK1α) through the activation of HMG-CoA reductase degradation protein 1 (HRD1). However, the mechanisms governing S100A16-induced HRD1 activation and the upregulation of S100A16 expression in renal injury are not fully understood.

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  • Cancer immunotherapy faces challenges due to poor antigen recognition and an unfriendly tumor microenvironment (TME).
  • Researchers developed "onion-like" multi-lamellar RNA lipid particle aggregates (LPAs) that enhance the delivery and effectiveness of tumor mRNA antigens by activating specific immune responses in the body.
  • In studies with dogs and humans, RNA-LPAs showed promising results, improving survival rates and triggering strong immune reactions against tumors, suggesting they could be a breakthrough method for cancer treatment.
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  • The study examines how Esketamine (ESK) affects heart cell damage caused by lack of oxygen and subsequent reoxygenation, focusing on its interaction with TRPV1 and intracellular calcium levels.
  • ESK treatment improved cell viability and reduced apoptosis and calcium concentration after H/R stress, highlighting its protective effects.
  • The research suggests that while TRPV1 upregulation can diminish ESK's protective benefits, downregulating TRPV1 enhances its therapeutic impact against cardiac injury.
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Antibodies targeting the immune checkpoint molecules PD-1, PD-L1 and CTLA-4, administered alone or in combination with chemotherapy, are the standard of care in most patients with metastatic non-small-cell lung cancers. When given before curative surgery, tumor responses and improved event-free survival are achieved. New antibody combinations may be more efficacious and tolerable.

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