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Bone marrow dysfunction

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https://www.readbyqxmd.com/read/28326353/in-vitro-osteogenic-capacity-of-bone-marrow-mscs-from-postmenopausal-women-reflect-the-osseointegration-of-their-cementless-hip-stems
#1
Jessica J Alm, Niko Moritz, Hannu T Aro
Age-related dysfunction of mesenchymal stromal cells (MSCs) is suggested as a main cause of altered bone repair with aging. We recently showed that in postmenopausal women undergoing cementless total hip arthroplasty (THA) aging, low bone mineral density (BMD) and age-related geometric changes of the proximal femur are risk factors for increased early migration and delayed osseointegration of the femoral stems. Extending these analyses, we have here explored how the in vitro osteogenic capacity of bone marrow MSCs from these patients reflects implant osseointegration, representing the patient's in vivo bone healing capacity...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28314771/high-density-lipoprotein-hdl-metabolism-and-bone-mass
#2
Nicholaos Papachristou, Harry Blair, Kyriakos E Kypreos, Dionysios Papachristou
It is well appreciated that high density lipoprotein (HDL) and bone physiology and pathology are tightly linked. Studies, primarily in mouse models have shown that dysfunctional and/or disturbed HDL can affect bone mass through many different ways. Specifically, reduced HDL levels have been associated with the development of an inflammatory microenvironment that affects the differentiation and function of osteoblasts. In addition, perturbation in HDL metabolic pathways favor adipoblastic and restrain osteoblastic differentiation through, among others, the modification of specific bone-related chemokines and signaling cascades...
March 17, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28314577/nanotubes-the-fast-track-to-treatment-of-dent-disease
#3
Thomas E Willnow
Studies in mice have suggested bone marrow transplantation as a strategy to correct the endocytic dysfunction of the proximal tubules in renal Fanconi syndrome, yet the mode of action has remained mysterious. Using a mouse model of Dent disease, Gabriel et al. now show that rescue of the resorptive capacity in the diseased kidney involves cell-to-cell contact between engrafted and host cells via nanotubes, cellular projections that enable transfer of wild-type activity into mutant cells of the proximal tubule...
April 2017: Kidney International
https://www.readbyqxmd.com/read/28302239/hyperoxaluria-after-renal-transplantation
#4
Waqar Ahmed, Abad Ur Rehman, Sumit Acharya
Primary hyperoxaluria is a rare autosomal recessive disorder, characterised by precipitation of insoluble oxalate crystals in the joints, kidneys, heart, eyes, skin, nerves, and bone marrow. The patients of primary oxaluria usually present with renal stone/nephrocalcinosis, and isolated kidney transplantation should not be done in these patients. We present a case report of 31-year lady with acute graft dysfunction due to oxaluria with no history of nephrolithiasis/nephrocalcinosis prior to renal transplantation...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28293548/age-appropriate-functions-and-dysfunctions-of-the-neonatal-neutrophil
#5
REVIEW
Shelley Melissa Lawrence, Ross Corriden, Victor Nizet
Neonatal and adult neutrophils are distinctly different from one another due to well-defined and documented deficiencies in neonatal cells, including impaired functions, reduced concentrations of microbicidal proteins and enzymes necessary for pathogen destruction, and variances in cell surface receptors. Neutrophil maturation is clearly demonstrated throughout pregnancy from the earliest hematopoietic precursors in the yolk sac to the well-developed myeloid progenitor cells in the bone marrow around the seventh month of gestation...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28290981/case-report-of-clinical-vignette-osteopetrosis
#6
John B Moore, Thanh D Hoang, Alfred F Shwayhat
INTRODUCTION: Osteopetrosis is a connective tissue disorder resulting from abnormally dense bone predisposing patients to fracture. The clinical pattern of fractures across time and space as well as suggestive radiographic findings usually raises diagnostic suspicion. Multiple genetic mutations resulting in dysfunctional osteoclasts have been implicated in the pathogenesis of osteopetrosis with variable inheritance patterns. In severe cases, usually inherited in an autosomal recessive pattern, the medullary cavity important in the production of normal blood cell progenitors is replaced by defective endochondral bone, leading to pancytopenia and consequential extramedullary hematopoiesis...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28290973/total-artificial-heart-implantation-as-a-bridge-to-heart-transplantation-in-an-active-duty-service-member-with-amyloid-cardiomyopathy
#7
Michael S Scully, Dylan E Wessman, James M McKee, Gregory M Francisco, Keshav R Nayak, Jon A Kobashigawa
INTRODUCTION: Cardiac involvement by light-chain (AL) amyloid occurs in up to 50% of patients with primary AL amyloidosis. The prognosis of amyloid heart disease is poor with 1-year survival rates of 35 to 40%. Historically, heart transplantation was considered controversial for patients with AL amyloid cardiomyopathy (CM) given the systemic nature of the disease and poor survival. We present a case report of an active duty service member diagnosed with advanced cardiac amyloid who underwent total artificial heart transplant as a bridge to heart transplant and eventual autologous stem cell transplant...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28286566/gastrointestinal-manifestations-of-mitochondrial-disorders-a-systematic-review
#8
REVIEW
Josef Finsterer, Marlies Frank
Mitochondrial disorders (MIDs) due to respiratory-chain defects or nonrespiratory chain defects are usually multisystem conditions [mitochondrial multiorgan disorder syndrome (MIMODS)] affecting the central nervous system (CNS), peripheral nervous system, eyes, ears, endocrine organs, heart, kidneys, bone marrow, lungs, arteries, and also the intestinal tract. Frequent gastrointestinal (GI) manifestations of MIDs include poor appetite, gastroesophageal sphincter dysfunction, constipation, dysphagia, vomiting, gastroparesis, GI pseudo-obstruction, diarrhea, or pancreatitis and hepatopathy...
January 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28278074/a-clinical-study-of-21-patients-with-hemophagocytic-syndrome-in-295-cases-diagnosed-with-nasal-type-extranodal-nature-killer-t-cell-lymphoma
#9
Na Li, Li Zhang, Jie Liu, Jing Zhang, Hua-Wei Weng, Hong-Yu Zhuo, Li-Qun Zou
Nasal type, extranodal nature killer (NK)/T cell lymphoma-associated hemophagocytic syndrome (NK/T-LAHS) is a rare and fatal disorder with extremely poor prognosis. To investigate its clinical characteristics and risk factors, we retrospectively analyzed 295 patients with nasal type, extranodal nature killer/T cell lymphoma, of which 21 were diagnosed with hemophagocytic syndrome, with a cumulative incidence of 7.1%. The most frequently clinical characteristics were fever, lymphadenopathy, hepatosplenomegaly, pancytopenia, hyperferritinemia, liver dysfunction, hypertriglyceridemia, hypofibrinogenemia and evaluated lactate dehydrogenase (LDH) level...
February 25, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28273632/the-protective-effects-of-silibinin-in-the-treatment-of-streptozotocin-induced-diabetic-osteoporosis-in-rats
#10
Te Wang, Leyi Cai, Yangyang Wang, Qingqing Wang, Di Lu, Hua Chen, Xiaozhou Ying
Diabetic osteoporosis (DO) is a complication of diabetes mellitus. Our previous study showed that silibinin can attenuate high glucose mediated human bone marrow stem cells dysfunction through antioxidant effect. However, no study has yet investigated the effect of silibinin in diabetic rats. Therefore, we assessed the effects of silibinin on bone characteristics in streptozotocin-induced diabetic rats. The aim of our study was to determine whether providing silibinin in the different supplementation could prevent bone loss in diabetic rats or not...
March 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28271734/overuse-of-organ-biopsies-in-immunoglobulin-light-chain-al-amyloidosis-the-consequence-of-failure-of-early-recognition
#11
Eli Muchtar, Angela Dispenzieri, Martha Q Lacy, Francis K Buadi, Prashant Kapoor, Suzanne R Hayman, Wilson Gonsalves, Rahma Warsame, Taxiarchis V Kourelis, Rajshekhar Chakraborty, Stephen Russell, John A Lust, Yi Lin, Ronald S Go, Steven Zeldenrust, S Vincent Rajkumar, David Dingli, Nelson Leung, Robert A Kyle, Shaji K Kumar, Morie A Gertz
INTRODUCTION: The diagnosis of amyloidosis requires histological confirmation of Congo-red (CR) deposits. The tissue source is preferably fat aspiration and/or bone marrow biopsy, but at times organ biopsy is required. METHODS: We studied 612 patients with systemic immunoglobulin light chain amyloidosis to characterize the tissues used to establish the diagnosis. RESULTS: The median number of tissue samples was 3. 95% of bone marrow (BM) biopsies were stained for CR, while 79% of patients had fat aspiration CR-stained...
March 8, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28270854/antiemetic-and-myeloprotective-effects-of-rhus-verniciflua-stoke-in-a-cisplatin-induced-rat-model
#12
Hyo-Seon Kim, Hyeong-Geug Kim, Hwi-Jin Im, Jin-Seok Lee, Sung-Bae Lee, Won-Yong Kim, Hye-Won Lee, Sam-Keun Lee, Chang Kyu Byun, Chang-Gue Son
Rhus verniciflua Stoke has been commonly used in traditional medicine to treat gastrointestinal (GI) dysfunction diseases. In order to investigate pharmacological properties of Rhus verniciflua Stoke water extract (RVX) on cisplatin-induced amnesia, RVX (0, 25, 50, or 100 mg/kg) was orally administrated for five consecutive days after a single intraperitoneal injection of cisplatin (6 mg/kg) to SD rat. Cisplatin injection significantly increased the kaolin intake (emesis) but reduced the normal diet intake (anorexia) whereas the RVX treatment significantly improved these abnormal diet behaviors at both the acute and delayed phase...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28252221/bone-marrow-derived-mesenchymal-stem-cells-mediated-protection-against-organ-dysfunction-in-disseminated-intravascular-coagulation-is-associated-with-peripheral-immune-responses
#13
Biao Wang, Shuming Wu, Tao Wang, Zengshan Ma, Kai Liu
Disseminated intravascular coagulation (DIC) is a fatal thrombohemorrhagic disorder. Bone marrow-derived mesenchymal stem cells (BMSCs) are multipotent stem cells that have tremendous therapeutic effect. Our aim was to explore whether the immune mechanisms were associated with BMSCs-afforded protection against DIC. We generated a rat model of DIC by lipopolysaccharide (LPS, 3 mg/kg) injection via the tail vein. In the treatment group, rats were pre-treated with 1 × l0(3) , 1 × l0(4) , 1 × l0(5) and 1 × l0(6) allogeneic BMSCs before LPS injection...
March 2, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28250969/mesenchymal-stem-cells-in-alleviating-sepsis-induced-mice-cardiac-dysfunction-via-inhibition-of-mtorc1-p70s6k-signal-pathway
#14
Wei Huang, Wensi Fan, Yabin Wang, Dong Han, Xiujuan Li, Shuang Li, Congye Li, Bin Xu, Yuesheng Huang, Xiaobin Fu, Feng Cao
Sepsis-induced cardiac dysfunction remains a major cause of morbidity and mortality in patients suffered from severe trauma. Mesenchymal stem cells (MSCs) -based treatment has been verified as a promising approach to mitigate the sepsis-induced cardiac dysfunction, but the mechanism is still ambiguous. Thus, our study was designed to explore the potential role of MSCs in sepsis-induced cardiac dysfunction. In vivo bioluminescence imaging revealed 80% acute donor cell death of bone marrow-derived MSCs (BM-MSCs) within 3 days after transplantation...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28247521/combination-of-leflunomide-and-everolimus-for-treatment-of-bk-virus-nephropathy
#15
Juli Jaw, Prue Hill, David Goodman
BK nephropathy (BKN) is a common cause of graft dysfunction following kidney transplantation. Minimization of immunosuppressive therapy remains the first line of therapy, but this may lead to rejection and graft loss. In some cases, despite lowering immunosuppression, BK infection can persist, leading to chronic damage and kidney failure. Currently, there is no specific anti-BK viral therapy. Recent in vitro experiments have demonstrated a reduction in BK viral replication when infected cells are treated with the combination of Leflunomide and Everolimus...
April 2017: Nephrology
https://www.readbyqxmd.com/read/28238121/leukocyte-inos-is-required-for-inflammation-and-pathological-remodeling-in-ischemic-heart-failure
#16
Justin R Kingery, Tariq Hamid, Robert K Lewis, Mohamed Ameen Ismahil, Shyam S Bansal, Gregg Rokosh, Tim M Townes, Suzanne T Ildstad, Steven P Jones, Sumanth D Prabhu
In the failing heart, iNOS is expressed by both macrophages and cardiomyocytes. We hypothesized that inflammatory cell-localized iNOS exacerbates left ventricular (LV) remodeling. Wild-type (WT) C57BL/6 mice underwent total body irradiation and reconstitution with bone marrow from iNOS(-/-) mice (iNOS(-/-)c) or WT mice (WTc). Chimeric mice underwent coronary ligation to induce large infarction and ischemic heart failure (HF), or sham surgery. After 28 days, as compared with WTc sham mice, WTc HF mice exhibited significant (p < 0...
March 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28237777/integrin-linked-kinase-improves-functional-recovery-of-diabetic-cystopathy-and-mesenchymal-stem-cell-survival-and-engraftment-in-rats
#17
Yi Huang, Liucheng Ding, Yunpeng Shao, Zhengsen Chen, Baixin Shen, Yinchao Ma, Lijie Zhu, Zhongqing Wei
OBJECTIVES: Diabetic cystopathy (DCP), characterized by peripheral neuropathy-associated bladder dysfunction, is a common urinary complication in patients with diabetes (~80%). Bone marrow mesenchymal stem cell (BMMSC) transplantation, a new and emerging regenerative therapy, provides a curative option for DCP. However, the application of this therapy is limited by the low survival rate and engraftment of transplanted stem cells. This study was undertaken to determine whether integrin-linked kinase (ILK) overexpression would improve stem cell survival and engraftment after BMMSC transplantation...
February 22, 2017: Canadian Journal of Diabetes
https://www.readbyqxmd.com/read/28235633/cell-therapy-for-heart-disease-after-15-years-unmet-expectations
#18
REVIEW
Patrizia Nigro, Beatrice Bassetti, Laura Cavallotti, Valentina Catto, Corrado Carbucicchio, Giulio Pompilio
Over the past two decades cardiac cell therapy (CCT) has emerged as a promising new strategy to cure heart diseases at high unmet need. Thousands of patients have entered clinical trials for acute or chronic heart conditions testing different cell types, including autologous or allogeneic bone marrow (BM)-derived mononuclear or selected cells, BM- or adipose tissue-derived mesenchymal cells, or cardiac resident progenitors based on their potential ability to regenerate scarred or dysfunctional myocardium. Nowadays, the original enthusiasm surrounding the regenerative medicine field has been cushioned by a cumulative body of evidence indicating an inefficient or modest efficacy of CCT in improving cardiac function, along with the continued lack of indisputable proof for long-term prognostic benefit...
February 21, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28224968/hematopoiesis-with-obesity-and-exercise-role-of-the-bone-marrow-niche
#19
Russell Emmons, Grace M Niemiro, Michael De Lisio
Hematopoietic stem and progenitor cells (HSPC), the most primitive cells of the hematopoietic system responsible for maintaining all mature blood cells, display the hallmark characteristics of self-renewal and multi-potent differentiation into mature cell lineages. HSPC activity is directed by the bone marrow niche, a complex environment composed of heterogeneous cell populations that regulate HSPC function through the secretion of a wide array of cytokines and growth factors. Diet induced obesity results in a dramatic remodeling of the bone marrow niche, skewing HSPC function resulting in a compromised immune system...
2017: Exercise Immunology Review
https://www.readbyqxmd.com/read/28223293/the-loss-of-macrophage-fatty-acid-oxidation-does-not-potentiate-systemic-metabolic-dysfunction
#20
Elsie Gonzalez-Hurtado, Jieun Lee, Joseph Choi, Ebru S Selen Alpergin, Samuel L Collins, Maureen R Horton, Michael J Wolfgang
Fatty acid oxidation in macrophages has been suggested to play a causative role in high-fat diet-induced metabolic dysfunction, particularly in the etiology of adipose driven insulin resistance. To understand the contribution of macrophage fatty acid oxidation directly to metabolic dysfunction in high-fat diet-induced obesity, we generated mice with a myeloid-specific knockout of carnitine palmitoyltransferase 2 (CPT2 Mϕ-KO), an obligate step in mitochondrial long-chain fatty acid oxidation. While fatty acid oxidation was clearly induced upon IL-4 stimulation, fatty acid oxidation deficient CPT2 Mϕ-KO bone marrow derived macrophages (BMDM) displayed canonical markers of M2 polarization following IL-4 stimulation in vitro...
February 21, 2017: American Journal of Physiology. Endocrinology and Metabolism
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