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stem cell and pyoderma gangrenosum

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https://www.readbyqxmd.com/read/27649406/comparing-the-efficacy-of-viable-cryopreserved-placental-membrane-for-the-treatment-of-wounds-of-diverse-etiologies
#1
Derek S Anselmo, Marc Karpo, Ebony Love, Tracey Vlahovic
INTRODUCTION AND OBJECTIVES: The benefits of using amniotic tissue in skin regeneration are well documented. Today, cryopreservation technology allows for better availability and maintenance of mesenchymal stem cells. This is of particular interest in treating the diabetic foot ulcer as this population has fewer mesenchymal stem cells. The objective of this case series investigation was to compare the efficacy of cryopreserved human amniotic stem cells in treating foot wounds of different etiologies...
September 2016: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/25876705/leukocyte-adhesion-deficiency-i-with-a-novel-intronic-mutation-presenting-with-pyoderma-gangrenosum-like-lesions
#2
Manisha Madkaikar, Khushnooma Italia, Maya Gupta, Mukesh Desai, Amita Aggarwal, Surjit Singh, Deepti Suri, Anju Mishra, Sushant Chavan, Kanjaksha Ghosh, Rishu Sarangal, Sunil Dogra
Pyoderma gangrenosum (PG) is an uncommon noninfectious neutrophilic dermatosis characterized by recurrent, sterile, necrotic skin ulcers. It is commonly associated with underlying systemic disease like inflammatory bowel disease, rheumatoid arthritis and hematological malignancies. Pathogenesis of PG remains unclear though aberrant immune responses have been implicated. The diagnosis of PG is of exclusion and management is empirical with local or systemic immunosuppressive therapy. LAD-I is a rare form of autosomal recessive disorders caused by mutations of the gene ITGB2, clinically characterized by recurrent severe bacterial infection, impaired pus formation, poor wound healing and persistent neutrophilia...
May 2015: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/25104208/atypical-severe-combined-immunodeficiency-caused-by-a-novel-homozygous-mutation-in-rag1-gene-in-a-girl-who-presented-with-pyoderma-gangrenosum-a-case-report-and-literature-review
#3
REVIEW
Turkan Patiroglu, H Haluk Akar, Kimberly Gilmour, M Akif Ozdemir, Shahnaz Bibi, Frances Henriquez, Siobhan O Burns, Ekrem Unal
Severe combined immunodeficiency (SCID) is a heterogeneous group of inherited defects involving the development of T- and/or B-lymphocytes. We report a female with atypical severe combined immunodeficiency caused by a novel homozygous mutation at cDNA position 2290 (c.2290C > T) in exon 2 of the RAG1 gene. The patient presented with bronchopneumonia, pyoderma gangrenosum (PG), pancytopenia and splenomegaly. She presented to us with pancytopenia and splenomegaly at the age of 11. Her condition was complicated by PG on left lower ankle at the age of 12...
October 2014: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/19290936/pest-family-phosphatases-in-immunity-autoimmunity-and-autoinflammatory-disorders
#4
REVIEW
André Veillette, Inmoo Rhee, Cleiton Martins Souza, Dominique Davidson
The proline-, glutamic acid-, serine- and threonine-rich (PEST) family of protein tyrosine phosphatases (PTPs) includes proline-enriched phosphatase (PEP)/lymphoid tyrosine phosphatase (LYP), PTP-PEST, and PTP-hematopoietic stem cell fraction (HSCF). PEP/LYP is a potent inhibitor of T-cell activation, principally by suppressing the activity of Src family protein tyrosine kinases (PTKs). This function seems to be dependent, at least in part, on the ability of PEP to bind C-terminal Src kinase (Csk), a PTK also involved in inactivating Src kinases...
March 2009: Immunological Reviews
https://www.readbyqxmd.com/read/17688373/how-can-we-help-patients-with-refractory-chronic-graft-versus-host-disease-single-centre-experience
#5
P Rzepecki, J Barzal, T Sarosiek, S Oborska, C Szczylik
Chronic graft-versus-host disease (cGVHD) is a major cause of morbidity and mortality in long-term survivors of allogeneic haematopoietic stem cell transplantation (alloHSCT). Ocular involvement as well as dermal sclerosis, joint contractures and pathological changes in oral cavity are often refractory to treatment. This kind of patients require complex aggressive immunosuppressive therapy. We are still waiting for drugs against cGVHD, characterized by decreased infectious complications, encouraging efficacy and rare and reversible side effects...
2007: Neoplasma
https://www.readbyqxmd.com/read/16865656/pyoderma-gangraenosum-a-rare-but-potentially-fatal-complication-in-paediatric-oncology-patients
#6
COMPARATIVE STUDY
P E Meissner, U Jappe, C M Niemeyer, A M Peters, A Kulozik, E P Zilow
Pyoderma gangraenosum (PG) is a serious chronic, ulcerative skin disorder afflicting both adults and children. As PG is often associated with systemic diseases (>50%) such as inflammatory bowel disease, rheumatoid arthritis or haematological disorders, it requires a multidisciplinary approach. This disorder is not commonly reported in paediatrics; therefore children with PG represent a particularly difficult diagnostic challenge. Clinical diagnosis is often delayed and PG is only considered after eliminating other causes of cutaneous ulcers...
September 2007: Klinische Pädiatrie
https://www.readbyqxmd.com/read/16219353/the-5q-syndrome-and-autoimmune-phenomena-report-of-three-cases
#7
Ronald Feitosa Pinheiro, Maria Regina Régis Silva, Maria de Lourdes L F Chauffaille
Myelodysplastic syndrome is a clonal hematopoietic stem cell disorder characterized by ineffective hematopoiesis, peripheral cytopenias and an additional risk to evolve to acute leukemia in up to 30% of the cases. Autoimmune manifestations as vasculitis, pyoderma gangrenosum, hemolytic anemia, immune thrombocytopenia, rheumatoid arthritis as well as positive anti-nuclear factor and rheumatoid factor have been reported in 13-30% of MDS patients. The aim of this report is to present three patients with 5q- syndrome who presented different autoimmune serological and clinical phenomena and review the literature...
April 2006: Leukemia Research
https://www.readbyqxmd.com/read/16134776/a-case-of-erythema-nodosum-and-serositis-associated-with-myelodysplastic-syndrome
#8
Jung-Hye Choi, Myung-Ju Ahn, Yong-Wook Park, Ho-Suk Oh, Young-Yeul Lee, In-Soon Kim
Myelodysplastic syndrome (MDS) is a heterogenous group of stem cell disorders usually characterized by progressive refractory cytopenias, which could progress to acute myeloid leukemia. MDS may be associated with a wide spectrum of skin lesions, including neoplastic cell infiltration, Sweet's syndrome, pyoderma gangrenosum, erythema elevatum diutinum, vasculitis, and panniculitis. However, erythema nodosum is rarely associated with MDS. Unusual rheumatologic manifestations in patients with MDS also have been reported, which range from asymptomatic serological abnormalities to classic connective tissue disorders such as Sjögren's syndrome, relapsing polychondritis, systemic lupus erythematosus, rheumatoid arthritis and mixed connective tissue disease...
June 2005: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/16023935/other-uses-of-homologous-skin-grafts-and-skin-bank-bioproducts
#9
REVIEW
Michele Fimiani, Elisa Pianigiani, Francesca Cherubini Di Simplicio, Paolo Sbano, Aldo Cuccia, Gerarda Pompella, Giovambattista De Aloe, Felice Petraglia
The main use of homologous skin grafts or grafts of related bioproducts is in the treatment of severe burns. However, various new clinical and experimental sectors, in which this type of skin substitute can be useful, have recently emerged. The main new clinical indications for skin allografts include: skin loss, surgical wounds and bullous diseases. In these fields donor skin can be used for different purposes: as a physiological biological dressing to control pain and protect deep structures such as tendons, bones, cartilage and nerves, and to promote reepithelization with a significant reduction in healing time, and as skin substitute with dermal tissue to guide repair and make it as physiological as possible...
July 2005: Clinics in Dermatology
https://www.readbyqxmd.com/read/14990294/-aortitis-after-g-csf-injections
#10
C Darie, S Boutalba, P Fichter, J-F Huret, P Jaillot, F Deplus, S Gerenton, T Zenone, J-L Moreau, A Grand
INTRODUCTION: Aortitis consists in aortic wall inflammation from infectious or non infectious cause. It may lead to aortic aneurysm with a risk of rupture, which is life-threatening and may justify surgical procedures. The cause of the aortitis is sometimes obscure. CASE REPORT: We report the case of a 55 years old woman who developed acute aortitis of the descending aorta after G-CSF (granulocyte-colony stimulating factor) injections for blood stem cells graft...
March 2004: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/12689906/pyoderma-gangrenosum-of-the-ocular-adnexa-a-rare-condition-with-characteristic-clinical-appearances
#11
Geoffrey E Rose, Eric A Barnes, Jimmy M Uddin
PURPOSE: To describe the clinical characteristics of periocular pyoderma gangrenosum and to highlight features that may encourage early diagnosis of this extremely rare condition. DESIGN: Retrospective, noncomparative, interventional case series. PARTICIPANTS AND METHODS: Four patients with periocular pyoderma gangrenosum were treated in the Orbital Unit at Moorfields Eye Hospital over the course of a decade. MAIN OUTCOME MEASURES: Presenting clinical features, therapy, and outcome...
April 2003: Ophthalmology
https://www.readbyqxmd.com/read/11890301/pyoderma-gangrenosum-associated-with-paroxysmal-nocturnal-hemoglobulinuria-and-monoclonal-gammopathy
#12
Kimiko Matsubara, Ken-ichi Isoda, Yoshitami Maeda, Hitoshi Mizutani
Pyoderma gangrenosum developed in a man with a five-year history of paroxysmal nocturnal hemoglobinuria and monoclonal gammopathy. He had multiple walnut sized ulcers on his back and extremities, plasma IgM-k type M-protein and low erythrocytic CD55 expression. This is an extremely rare association. However, clonal expansion of plasma cells and chimeric expression of hematopoietic cell glycosylphosphatidylinositol (GPI)-anchored proteins may represent somatic mutations of hematopoietic stem cells in PG as well as PNH...
February 2002: Journal of Dermatology
https://www.readbyqxmd.com/read/11402513/-myelodysplasias-and-systemic-diseases-a-non-fortuitous-association
#13
S Berthier, N Magy, H Gil, M B Schneider, D A Vuitton, J L Dupond
PURPOSE: Myelodysplastic syndromes are clonal hematologic disorders, expanded from myeloid stem cells. A primitive immunologic disorder is discussed. This hypothesis could explain a non-casual association with systemic diseases. The aim of our study is to test this hypothesis. METHODS: We retrospectively investigated the data of 60 patients with myelodysplastic syndromes (group I) hospitalized in our unit from 1990 to 1999. The frequency of systemic disorders was screened and compared to controls (group II)...
May 2001: La Revue de Médecine Interne
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