7,094 results match your criteria Bone Infarct

Mesenchymal stem cell-derived exosomal miR-143-3p suppresses myocardial ischemia-reperfusion injury by regulating autophagy.

Life Sci 2021 Jun 21:119742. Epub 2021 Jun 21.

Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing Jiangsu Province 210009, China. Electronic address:

Aims: Myocardial ischemia-reperfusion (I/R) injury is considered as a major obstacle of myocardial perfusion to save acute myocardial infarction, and causes a serious threat to human health. An extensive body of evidence has unveiled that mesenchymal stem cells (MSCs) as adult stem cells play a vital role in the field of damaged myocardial regeneration and repair. However, the biological role of MSCs derived-exosomes in the protection of myocardial I/R injury has not been elucidated. Read More

View Article and Full-Text PDF

Predicting 30-day mortality after ST elevation myocardial infarction: Machine learning- based random forest and its external validation using two independent nationwide datasets.

J Cardiol 2021 Jun 18. Epub 2021 Jun 18.

The Mina and Everard Goodman Faculty of Life Sciences. Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA.

Background: Various prognostic models for mortality prediction following ST-segment elevation myocardial infarction (STEMI) have been developed over the past two decades. Our group has previously demonstrated that machine learning (ML)-based models can outperform known risk scores for 30-day mortality post-STEMI. The study aimed to redevelop an ML-based random forest prediction model for 30-day mortality post-STEMI and externally validate it on a large cohort. Read More

View Article and Full-Text PDF

Biomaterials-assisted spheroid engineering for regenerative therapy.

BMB Rep 2021 Jun 22. Epub 2021 Jun 22.

Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea; Department of Regenerative Dental Medicine, College of Dentistry, Dankook University, Cheonan 31116, Republic of Korea.

Cell-based therapy is a promising approach in the field of regenerative medicine. As cells are formed into spheroids, their survival, functions, and engraftment in the transplanted site are significantly improved compared to single cell transplantation. To improve the therapeutic effect of cell spheroids even further, various biomaterials (e. Read More

View Article and Full-Text PDF

Exosomes released from mesenchymal stem cells overexpressing microRNA-30e ameliorate heart failure in rats with myocardial infarction.

Am J Transl Res 2021 15;13(5):4007-4025. Epub 2021 May 15.

Department of Emergency Cardiology, Beijing Anzhen Hospital, Capital Medical University Beijing 100029, P. R. China.

Aim: Bone marrow-derived mesenchymal stem cells (BMMSCs) exert cardioprotective effects on myocardial infarction (MI). In this investigation, we elucidated the protective effects of BMMSCs-exosomes (Exo) expressing microRNA-30e (miR-30e) against heart failure (HF) in MI rats.

Methods: First, the differentially expressed miRNAs were analyzed using a miRNA-based microarray of MI. Read More

View Article and Full-Text PDF

Partial Splenic Embolization for Hypersplenism Associated with Steatohepatitis in a Hemodialysis Patient.

Saudi J Kidney Dis Transpl 2021 Jan-Feb;32(1):255-260

Department of Medicine, Nephrology Unit, Amiri Hospital, Ministry of Health, Kuwait.

Hypersplenism (HS) is a disorder characterized by a triad of splenomegaly, peripheral cytopenia due to premature destruction of blood cells and normocellular bone marrow. Its etiology is diverse and includes (a) primary autoimmune cytopenias, (b) secondary to congestion due to portal hypertension in cirrhosis and, other causes such asperiportal fibrosis, infections, autoimmune diseases, lymphoproliferative disorders, infiltrative diseases and hemolytic anemias. The latter diseases are common in patients with end-stage kidney disease. Read More

View Article and Full-Text PDF

Selenium-Binding Protein 1 (SELENBP1) as Biomarker for Adverse Clinical Outcome After Traumatic Spinal Cord Injury.

Front Neurosci 2021 28;15:680240. Epub 2021 May 28.

Department of Paraplegiology, BG Trauma Centre Ludwigshafen, Ludwigshafen, Germany.

Traumatic spinal cord injury (TSCI) presents a diagnostic challenge as it may have dramatic consequences for the affected patient. Additional biomarkers are needed for improved care and personalized therapy. Serum selenium binding protein 1 (SELENBP1) has been detected in myocardial infarction, reflecting hypoxic tissue damage and recovery odds. Read More

View Article and Full-Text PDF

Manifestations of HbSE sickle cell disease: a systematic review.

J Transl Med 2021 Jun 16;19(1):262. Epub 2021 Jun 16.

Department of Medical Oncology/Hematology, National Centre for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.

Background: Sickle cell disease (SCD) is commonly encountered in Africa and Middle Eastern countries. The causative mutation in the gene encoding the hemoglobin subunit β (HBB) leads to various genotypic variants of the disease. This results in varied phenotypes, with a spectrum of complications, from benign to fatal. Read More

View Article and Full-Text PDF

Incidental cardiac uptake in bone scintigraphy: increased importance and association with cardiac amyloidosis.

BJR Case Rep 2021 May 19;7(3):20200161. Epub 2021 Jan 19.

Department of Radiology, Mater Misericordiae University Hospital, Dublin, Ireland.

Extraosseous radiotracer uptake during bone scintigraphy must be carefully assessed and it offers the potential to detect previously undiagnosed disease processes. A range of neoplastic, metabolic, traumatic, ischaemic and inflammatory disorders can cause soft tissue accumulation of bone avid radiopharmaceuticals. Accordingly, cardiac uptake in bone scintigraphy has a broad differential diagnosis and is commonly attributed to ischaemia/infarction related to coronary artery disease. Read More

View Article and Full-Text PDF

A novel bone-thinning technique for transcranial stimulation motor-evoked potentials in rats.

Sci Rep 2021 Jun 14;11(1):12496. Epub 2021 Jun 14.

Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, 734-8553, Japan.

Transcranial electrical stimulated motor-evoked potentials (tcMEPs) are widely used to evaluate motor function in humans, and even in animal studies, tcMEPs are used to evaluate neurological dysfunction. However, there is a dearth of reports on extended tcMEP recordings in both animal models and humans. Therefore, this study examined a new technique for stably recording tcMEPs over several weeks in six healthy female Sprague-Dawley rats. Read More

View Article and Full-Text PDF

lncRNA myocardial infarction-associated transcript (MIAT) knockdown alleviates LPS-induced chondrocytes inflammatory injury via regulating miR-488-3p/sex determining region Y-related HMG-box 11 (SOX11) axis.

Open Life Sci 2021 31;16(1):511-522. Epub 2021 May 31.

Department of Orthopaedic, Taizhou Municipal Hospital, No. 381, Zhongshan East Road, Jiaojiang District, Taizhou 318000, Zhejiang, China.

Long noncoding RNA (lncRNA) has been shown to be involved in the development of osteoarthritis (OA), an age-related bone and joint disease. However, the function and possible molecular mechanism of lncRNA myocardial infarction-associated transcript (MIAT) in lipopolysaccharide (LPS)-induced chondrocytes injury model remain unexplored. Cell viability and apoptosis were detected by methyl thiazolyl tetrazolium (MTT) and flow cytometry, respectively. Read More

View Article and Full-Text PDF

Therapeutic oxygen delivery by perfluorocarbon-based colloids.

Adv Colloid Interface Sci 2021 May 1;294:102407. Epub 2021 May 1.

Harangoutte Institute, 68160 Ste Croix-aux-Mines, France.

After the protocol-related indecisive clinical trial of Oxygent, a perfluorooctylbromide/phospholipid nanoemulsion, in cardiac surgery, that often unduly assigned the observed untoward effects to the product, the development of perfluorocarbon (PFC)-based O nanoemulsions ("blood substitutes") has come to a low. Yet, significant further demonstrations of PFC O-delivery efficacy have continuously been reported, such as relief of hypoxia after myocardial infarction or stroke; protection of vital organs during surgery; potentiation of O-dependent cancer therapies, including radio-, photodynamic-, chemo- and immunotherapies; regeneration of damaged nerve, bone or cartilage; preservation of organ grafts destined for transplantation; and control of gas supply in tissue engineering and biotechnological productions. PFC colloids capable of augmenting O delivery include primarily injectable PFC nanoemulsions, microbubbles and phase-shift nanoemulsions. Read More

View Article and Full-Text PDF

Genetically modified cell sheets in regenerative medicine and tissue engineering.

Biomaterials 2021 May 24;275:120908. Epub 2021 May 24.

The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, Zhejiang, 310006, China. Electronic address:

Genetically modified cell sheet technology is emerging as a promising biomedical tool to deliver therapeutic genes for regenerative medicine and tissue engineering. Virus-based gene transfection and non-viral gene transfection have been used to fabricate genetically modified cell sheets. Preclinical and clinical studies have shown various beneficial effects of genetically modified cell sheets in the regeneration of bone, periodontal tissue, cartilage and nerves, as well as the amelioration of dental implant osseointegration, myocardial infarction, skeletal muscle ischemia and kidney injury. Read More

View Article and Full-Text PDF

Human endometrium-derived stem cell improves cardiac function after myocardial ischemic injury by enhancing angiogenesis and myocardial metabolism.

Stem Cell Res Ther 2021 Jun 10;12(1):344. Epub 2021 Jun 10.

The Laboratory of Stem Cell Regenerative Medicine Research, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Key Laboratory of Cell Physiology of Ministry of Education, Shanxi Medical University, Taiyuan, China.

Background: The human endometrium in premenopausal women is an active site of physiological angiogenesis, with regenerative cells present, suggesting that the endometrium contains adult angiogenic stem cells. In the context of cardiac repair after ischemic injury, angiogenesis is a crucial process to rescue cardiomyocytes. We therefore investigated whether human endometrium-derived stem cells (hEMSCs) can be used for cardiac repair after ischemic injury and their possible underlying mechanisms. Read More

View Article and Full-Text PDF

Single-cell transcriptomic analyses of cardiac immune cells reveal that Rel-driven CD72-positive macrophages induce cardiomyocyte injury.

Cardiovasc Res 2021 Jun 8. Epub 2021 Jun 8.

The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.

Aims: The goal of our study was to investigate the heterogeneity of cardiac macrophages (CMφs) in mice with transverse aortic constriction (TAC) via single-cell sequencing and identify a subset of macrophages associated with heart injury.

Methods And Results: We selected all CMφs from CD45+ cells using single-cell mRNA sequencing data. Through dimension reduction, clustering and enrichment analyses, CD72hi CMφs were identified as a subset of proinflammatory macrophages. Read More

View Article and Full-Text PDF

Exosomally derived Y RNA fragment alleviates hypertrophic cardiomyopathy in transgenic mice.

Mol Ther Nucleic Acids 2021 Jun 20;24:951-960. Epub 2021 Apr 20.

Smidt Heart Institute, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048, USA.

Cardiosphere-derived cell exosomes (CDC) and YF1, a CDC-derived non-coding RNA, elicit therapeutic bioactivity in models of myocardial infarction and hypertensive hypertrophy. Here we tested the hypothesis that YF1, a 56-nucleotide Y RNA fragment, could alleviate cardiomyocyte hypertrophy, inflammation, and fibrosis associated with hypertrophic cardiomyopathy (HCM) in transgenic mice harboring a clinically relevant mutation in cardiac troponin I (cTnI). By quantitative PCR, YF1 was detectable in bone marrow, spleen, liver, and heart 30 min after intravenous (i. Read More

View Article and Full-Text PDF

Age-related defects in autophagy alter the secretion of paracrine factors from bone marrow mononuclear cells.

Aging (Albany NY) 2021 Jun 4;13(11):14687-14708. Epub 2021 Jun 4.

Toronto General Hospital Research Institute, University Health Network, Toronto, Canada.

Bone marrow mononuclear cell therapy improves cardiac repair after myocardial infarction (MI), in-part through signaling to resident cardiac cells, such as fibroblasts, which regulate scar formation. The efficacy of cell therapy declines with age, as aging of both donor and recipient cells decreases repair responses. Autophagy regulates the microenvironment by both extracellular vesicle (EV)-dependent and independent secretion pathways. Read More

View Article and Full-Text PDF

Bone marrow-derived NCS-01 cells for ischemic stroke.

Brain Circ 2021 Jan-Mar;7(1):44-47. Epub 2021 Mar 30.

Department of BIology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA.

Stroke stands as one of the most common causes of death among adults worldwide. Currently, tissue plasminogen activator serves as the only approved drug by the Food and Drug Administration for the treatment of acute ischemic stroke. Stem cell therapy serves as a viable treatment option and has been deemed as a safe and effective treatment for stroke patients. Read More

View Article and Full-Text PDF

Cardiovascular events in cancer patients with bone metastases-A Danish population-based cohort study of 23,113 patients.

Cancer Med 2021 Jun 2. Epub 2021 Jun 2.

Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus N, Denmark.

Introduction: The incidence of cardiovascular events among cancer patients with bone metastases is poorly understood. We examined rates of cardiovascular events among cancer patients with bone metastases and mortality following such events.

Methods: Using Danish health registries, we identified all Danish cancer patients diagnosed with bone metastases (1994-2013) and followed them from bone metastasis diagnosis. Read More

View Article and Full-Text PDF

Transplantation of CD34+ cells for myocardial ischemia.

World J Transplant 2021 May;11(5):138-146

Department of Cardiology, Institute CARDIOMET, University Hospital of Toulouse, Toulouse 31059, France.

CD34+ cells are multipotent hematopoietic stem cells also known as endothelial progenitor cells and are useful in regenerative medicine. Naturally, these cells are mobilized from the bone marrow into peripheral circulation in response to ischemic tissue injury. CD34+ cells are known for their high proliferative and differentiation capacities that play a crucial role in the repair process of myocardial damage. Read More

View Article and Full-Text PDF

COVID-19 among patients with orthopedic surgery: our experience from the Middle East.

J Orthop Surg Res 2021 May 25;16(1):336. Epub 2021 May 25.

Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.

Background: We report our experiences with COVID-19 in one of the largest referral orthopedic centers in the Middle East and aimed to describe the epidemiology and clinical characteristics of these patients.

Methods: During February 20 and April 20, 2020, patients who underwent orthopedic surgery and healthcare staff who were in contact with these patients were screened for COVID-19. To identify patients who were in the incubation period of COVID-19 during their hospital stay, all patients were tested again for COVID-19 4 weeks after discharge. Read More

View Article and Full-Text PDF

Temporal Trends in Hip Fractures: How Has Time-to-Surgery Changed?

Arch Bone Jt Surg 2021 Mar;9(2):224-229

Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, USA.

Background: Surgical fixation of hip fractures within 24-48 hours of hospital presentation is associated with decreased rates of postoperative morbidity and death, and recently, hospitals nationwide have implemented strategies to expedite surgery. Our aim was to describe how time-to-surgery and short-term complication rates have changed using the National Surgical Quality Improvement Program database from 2011 to 2017.

Methods: We identified more than 73,000 patients aged ≥65 years who underwent surgical fixation. Read More

View Article and Full-Text PDF

Extracellular vesicles derived from myocardial infarction plasma inhibit BMSCs apoptosis and enhance cardiac function via AKT signaling pathway.

Int Immunopharmacol 2021 Jul 19;96:107730. Epub 2021 May 19.

Department of Cardiovascular Surgery, Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China. Electronic address:

This study aimed to investigate whether extracellular vesicles (EVs) secreted in myocardial infarction (MI) plasma could protect against apoptosis of bone marrow mesenchymal stem cells (BMSCs) following hypoxia or serum deprivation in vitro and improve cardiac function following MI in vivo. The plasma samples were taken from female rats 24 h after MI. EVs were obtained and co-cultured with BMSCs. Read More

View Article and Full-Text PDF

Outcome and its predictors in traumatic brain injury in elderly population: Institutional study from Northern India.

J Family Med Prim Care 2021 Jan 30;10(1):289-294. Epub 2021 Jan 30.

Department of Neurosurgery, Dayanand Medical College and Hospital, Ludhiana, Punjab, India.

Introduction: Traumatic brain injury (TBI) is a leading cause of death and disability worldwide. Survival and functional outcome is significantly poor in the elderly population. There is a need to develop better geriatric specific prognostic models and evidence-based geriatric traumatic brain injury management protocols for better treatment, rehabilitation, and prevention. Read More

View Article and Full-Text PDF
January 2021

Adropin-based dual treatment enhances the therapeutic potential of mesenchymal stem cells in rat myocardial infarction.

Cell Death Dis 2021 May 18;12(6):505. Epub 2021 May 18.

Department of Cardiology, Fujian Institute of Coronary Heart Disease, Fujian Heart Medical Center, Fujian Medical University Union Hospital, Fuzhou, PR China.

Both weak survival ability of stem cells and hostile microenvironment are dual dilemma for cell therapy. Adropin, a bioactive substance, has been demonstrated to be cytoprotective. We therefore hypothesized that adropin may produce dual protective effects on the therapeutic potential of stem cells in myocardial infarction by employing an adropin-based dual treatment of promoting stem cell survival in vitro and modifying microenvironment in vivo. Read More

View Article and Full-Text PDF

Low‒Risk Essential Thrombocythemia Who Presented with Recurrent Episodes of Cerebral Hemorrhage during Pregnancy and Developed Cerebral Infarction during Puerperium.

Gan To Kagaku Ryoho 2021 May;48(5):725-730

Dept. of Hematology, Juntendo University Urayasu Hospital.

A 42‒year‒old woman. At week 27 of pregnancy, she developed subcortical hemorrhage and underwent open cranial surgery for hematoma evacuation. The platelet(Plt)count was 297,000/μL. Read More

View Article and Full-Text PDF

[Efficacy and safety of intravenous combined with topical administration of tranexamic acid in reducing blood loss after intramedullary fixation of intertrochanteric femoral fractures].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2021 May;35(5):550-555

Department of Orthopaedics, West China-KongGang Hospital of Sichuan University (Chengdu Shuangliu District First People's Hospital), Chengdu Sichuan, 610200, P.R.China.

Objective: To investigate the efficacy and safety of intravenous combined with topical administration of tranexamic acid (TXA) in reducing blood loss after intramedullary fixation of intertrochanteric femoral fractures by a prospective controlled trial.

Methods: Patients with intertrochanteric femoral fractures, who were admitted for intramedullary fixation between June 2015 and July 2019, were selected as the study subjects, 120 of whom met the selection criteria. The patients were randomly assigned to 3 groups: intravenous administration group (group A, 41 cases), topical administration group (group B, 40 cases), and combined administrations group (group C, 39 cases). Read More

View Article and Full-Text PDF

Idiopathic hypereosinophilic syndrome with intracardiac atypical linear-shaped and floating thrombus presenting as embolic cerebral infarction.

J Cardiol Cases 2021 May 26;23(5):193-197. Epub 2020 Nov 26.

Division of Cardiology, Department of Medicine, Ilsan Paik Hospital, Inje University School of Medicine, Goyang, 10380 Republic of Korea.

Knowledge of the multi-organ involvement in hypereosinophilic syndrome (HES) is important for the diagnosis and care of patients with this condition, even in cases with atypical presentation. This report aims to describe cerebral embolic infarction and intracardiac atypical linear-shaped thrombus in a patient with idiopathic HES and to discuss the approach of appropriate diagnosis and timely interventional management. A 55-year-old man presented with general weakness, including left-sided weakness, mild cognitive dysfunction, and mild exertional dyspnea for about 2 weeks. Read More

View Article and Full-Text PDF

The effects of intravenous infusion of autologous mesenchymal stromal cells in patients with subacute middle cerebral artery infarct: a phase 2 randomized controlled trial on safety, tolerability and efficacy.

Cytotherapy 2021 May 12. Epub 2021 May 12.

Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia. Electronic address:

Background Aims: Mesenchymal stromal cells (MSCs) are characterized by paracrine and immunomodulatory functions capable of changing the microenvironment of damaged brain tissue toward a more regenerative and less inflammatory milieu. The authors conducted a phase 2, single-center, assessor-blinded randomized controlled trial to investigate the safety and efficacy of intravenous autologous bone marrow-derived MSCs (BMMSCs) in patients with subacute middle cerebral artery (MCA) infarct.

Methods: Patients aged 30-75 years who had severe ischemic stroke (National Institutes of Health Stroke Scale [NIHSS] score of 10-35) involving the MCA territory were recruited within 2 months of stroke onset. Read More

View Article and Full-Text PDF

Tranexamic Acid Is Safe in Patients with a History of Coronary Artery Disease Undergoing Total Joint Arthroplasty.

J Bone Joint Surg Am 2021 May;103(10):900-904

Department of Orthopedic Surgery, NYU Langone Health, New York, NY.

Background: Tranexamic acid (TXA) is increasingly used to minimize blood loss during total joint arthroplasty (TJA). Although TXA has been shown to be highly effective in reducing operative blood loss, many surgeons believe that it places patients with coronary artery disease (CAD) or a history of coronary stents at an increased risk for myocardial infarction. The purpose of this study was to determine if TXA is safe to use in patients with a history of CAD or coronary stents. Read More

View Article and Full-Text PDF

Assessment of medullary and extramedullary myelopoiesis in cardiovascular diseases.

Pharmacol Res 2021 Jul 9;169:105663. Epub 2021 May 9.

Medical Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. Electronic address:

Recruitment of innate immune cells and their accumulation in the arterial wall and infarcted myocardium has been recognized as a central feature of atherosclerosis and cardiac ischemic injury, respectively. In both, steady state and under pathological conditions, majority of these cells have a finite life span and are continuously replenished from haematopoietic stem/progenitor cell pool residing in the bone marrow and extramedullary sites. While having a crucial role in the cardiovascular disease development, proliferation and differentiation of innate immune cells within haematopoietic compartments is greatly affected by the ongoing cardiovascular pathology. Read More

View Article and Full-Text PDF