Stem Cell Treatments for Heart Disease is an Option
Cardiovascular diseases remain the biggest cause of deaths worldwide, though over the last two decades, cardiovascular mortality rates have declined in many high-income countries but have increased at an astonishingly fast rate in low- and middle-income countries. The percentage of premature deaths from cardiovascular disease range from 4% in high-income countries to 42% in low-income countries. More than 17 million people died from cardiovascular diseases in 2008. Each year, heart disease kills more Americans than cancer. In recent years, cardiovascular risk in women has been increasing and has killed more women than breast cancer.
Measures to prevent cardiovascular disease may include:
- Keeping unapposed simple carbohydrates under control, no matter what type: fruit, bread, dairy, etc.
- decrease emotional stress, or how you react to the environment (traffic, work, deadlines, lifestyle, etc.)
- a low fat high fiber diet including whole grains and plenty of fresh fruit and vegetables (at least five portions a day)
- a diet high in complex vegetables and colorful fruit
- tobacco cessation;
- limit alcohol consumption;
- lower blood pressures if elevated through diet and exercise;
- decrease body fat (BMI);
- increase daily activity to 30 minutes of any kind of exercise per day at least five times per week
A fairly recent emphasis is on the link between low-grade inflammation that hallmarks atherosclerosis and its possible interventions. C-reactive protein (CRP) is a common inflammatory marker that has been found to be present in increased levels in patients at risk for cardiovascular disease. Also osteoprotegerin which is involved with regulation of a key inflammatory transcription factor called NF-κB has been found to be a risk factor of cardiovascular disease and mortality. Studies have shown that Stem Cells have shown the ability to reduce inflammation.
Stem Cell Treatments for Heart Disease is an Option
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Three dimensional fusion of electromechanical mapping and magnetic resonance imaging for real-time navigation of intramyocardial cell injections in a porcine model of chronic myocardial infarction.
Related Articles Three dimensional fusion of electromechanical mapping and magnetic resonance imaging for real-time navigation of intramyocardial cell injections in a porcine model of chronic myocardial infarction. Int J Cardiovasc Imaging. 2016 May;32(5):833-43 Authors: van Slochteren FJ, van Es R, Gyöngyösi M, van der Spoel TI, Koudstaal S, Leiner T, Doevendans PA, Chamuleau SA Abstract For cardiac regenerative therapy intramyocardial catheter guided cell transplantations are targeted to the infarct border zone (IBZ) i.e. the closest region of viable myocardium in the vicinity of the infarct area. For optimal therapeutic effect this area should be accurately identified. However late gadolinium enhanced magnetic resonance imaging (LGE-MRI) is the gold standard technique to determine the infarct size and location, electromechanical mapping (EMM) is used to guide percutaneous intramyocardial injections to the IBZ. Since EMM has a low spatial resolution, we aim to develop a practical and accurate technique to fuse EMM with LGE-MRI to guide intramyocardial injections. LGE-MRI and EMM were obtained in 17 pigs with chronic myocardial infarction created by balloon occlusion of LCX and LAD coronary arteries. LGE-MRI and EMM datasets were registered using our in-house developed 3D CartBox image registration software toolbox to assess: (1) the feasibility of the 3D CartBox toolbox, (2) the EMM values measured in the areas with a distinct infarct transmurality (IT), and (3) the highest sensitivity and specificity of the EMM to assess IT and define the IBZ. Registration of LGE-MRI and EMM resulted in a mean error of 3.01 ± 1.94 mm between the LGE-MRI mesh and EMM points. The highest sensitivity and specificity were found for UV <9.4 mV and bipolar voltage <1.2 mV to respectively identify IT of ≥5 and ≥97.5 %. The 3D CartBox image registration toolbox enables registration of EMM data on pre-acquired MRI during the EMM guided procedure and allows physicians to easily guide injections to the most optimal injection location for cardiac regenerative therapy and harness the full therapeutic effect of the therapy. PMID: 26883433 [PubMed - indexed for MEDLINE]Read more...
Pharmacological Modulation of Calcium Homeostasis in Familial Dilated Cardiomyopathy: An In Vitro Analysis From an RBM20 Patient-Derived iPSC Model.
Related Articles Pharmacological Modulation of Calcium Homeostasis in Familial Dilated Cardiomyopathy: An In Vitro Analysis From an RBM20 Patient-Derived iPSC Model. Clin Transl Sci. 2016 06;9(3):158-67 Authors: Wyles SP, Hrstka SC, Reyes S, Terzic A, Olson TM, Nelson TJ Abstract For inherited cardiomyopathies, abnormal sensitivity to intracellular calcium (Ca(2+) ), incurred from genetic mutations, initiates subsequent molecular events leading to pathological remodeling. Here, we characterized the effect of β-adrenergic stress in familial dilated cardiomyopathy (DCM) using human-induced pluripotent stem cell (hiPSC)-derived cardiomyocytes (CMs) from a patient with RBM20 DCM. Our findings suggest that β-adrenergic stimulation accelerated defective Ca(2+) homeostasis, apoptotic changes, and sarcomeric disarray in familial DCM hiPSC-CMs. Furthermore, pharmacological modulation of abnormal Ca(2+) handling by pretreatment with β-blocker, carvedilol, or Ca(2+) -channel blocker, verapamil, significantly decreased the area under curve, reduced percentage of disorganized cells, and decreased terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling (TUNEL)-positive apoptotic loci in familial DCM hiPSC-CMs after β-adrenergic stimulation. These translational data provide patient-based in vitro analysis of β-adrenergic stress in RBM20-deficient familial DCM hiPSC-CMs and evaluation of therapeutic interventions to modify heart disease progression, which may be personalized, but more importantly generalized in the clinic. PMID: 27105042 [PubMed - indexed for MEDLINE]Read more...
Related Articles Isolation of human explant derived cardiac stem cells from cryopreserved heart tissue. PLoS One. 2017;12(4):e0176000 Authors: Jackson R, Mount S, Ye B, Mayfield AE, Chan V, Boodhwani M, Davies RA, Haddad H, Davis DR Abstract The value of preserving high quality bio specimens for fundamental research is significant as linking cellular and molecular changes to clinical and epidemiological data has fueled many recent advances in medicine. Unfortunately, storage of traditional biospecimens is limited to fixed samples or isolated genetic material. Here, we report the effect of cryopreservation of routine myocardial biopsies on explant derived cardiac stem cell (EDC) culture outcomes. We demonstrate that immediate cryopreservation or delayed cryopreservation after suspension within cardioplegia for 12 hours did not alter EDC yields, proliferative capacity, antigenic phenotype or paracrine signature. Cryopreservation had negligible effects on the ability of EDCs to adopt a cardiac lineage, stimulate new vessel growth, attract circulating angiogenic cells and repair injured myocardium. Finally, cryopreservation did not influence the ability of EDCs to undergo genetic reprogramming into inducible pluripotent stem cells. This study establishes a means of storing cardiac samples as a retrievable live cell source for cardiac repair or disease modeling. PMID: 28414815 [PubMed - indexed for MEDLINE]Read more...
Accelerated cellular senescence as underlying mechanism for functionally impaired bone marrow-derived progenitor cells in ischemic heart disease.
Related Articles Accelerated cellular senescence as underlying mechanism for functionally impaired bone marrow-derived progenitor cells in ischemic heart disease. Atherosclerosis. 2017 May;260:138-146 Authors: Nollet E, Hoymans VY, Rodrigus IR, De Bock D, Dom M, Van Hoof VOM, Vrints CJ, Van Craenenbroeck EM Abstract BACKGROUND AND AIMS: Bone marrow (BM)-derived progenitor cells are functionally impaired in patients with ischemic heart disease (IHD), thereby hampering the outcome of autologous stem cell therapy. In search for underlying mechanisms for this BM dysfunction, accelerated cellular senescence was explored. METHODS: We analysed telomere length of BM-derived mononuclear cells (MNC) by MMqPCR in patients with coronary artery disease (n = 12), ischemic heart failure (HF; n = 9), non-ischemic HF (n = 7) and controls (n = 10), and related it to their myeloid differentiation capacity. Expressions of senescence-associated genes p53, p21(Cip1) and p16(lnk4A); and telomere maintenance genes TERT, TRF1/2, Sirt1 in BM-MNC were evaluated using qPCR. Pro-inflammatory cytokine levels (TNFα, IFNy, IL-6) in BM were measured by MSD. RESULTS: BM-MNC telomere length was shortened in patients with IHD, irrespective of associated cardiomyopathy, and shortened further with increasing angiographic lesions. This telomere shortening was associated with reduced myeloid differentiation capacity of BM-MNC, suggesting accelerated senescence as underlying cause for progenitor cell dysfunction in IHD. Both p16(lnk4A) and p21(Cip1) were activated in IHD and inversely related to myeloid differentiation capacity of BM-MNC; hence, the BM-MNC functional impairment worsens with increasing senescence. While BM-MNC telomere attrition was not related with alterations in TERT, TRF1/2 and Sirt1 expression, IFNy levels were associated with p21(Cip1)/p16(lnk4A) upregulation, suggesting a link between inflammation and cellular senescence. Still, the trigger for telomere shortening in IHD needs to be elucidated. CONCLUSIONS: Accelerated replicative senescence is associated with a functional impairment of BM-derived progenitor cells in IHD and could be targeted to improve efficacy of stem cell therapy. PMID: 28434530 [PubMed - in process]Read more...