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https://www.readbyqxmd.com/read/29334646/17%C3%AE-estradiol-improves-the-efficacy-of-exploited-autologous-bone-marrow-derived-mesenchymal-stem-cells-in-non-union-radial-defect-healing-a-rabbit-model
#1
Delaram Zamani Mazdeh, Pezhman Mirshokraei, Mohammadreza Emami, Ali Mirshahi, Iraj Karimi
Exploiting mesenchymal stem cells (MSCs) appears to be an appealing alternative to the traditional clinical approach in the treatment of non-union bone defects. It has been shown that 17β-estradiol improves the osteogenesis and proliferation potential of the MSCs via estrogen receptors. We investigated the effect of 17β-estradiol on exploiting autologous BMSCs (bone marrow-derived MSCs) for the purpose of healing of radial non-union segmental defect in rabbit. Twenty rabbits were divided into 4 experimental groups: 1...
December 28, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/29334630/generation-of-an-integration-free-induced-pluripotent-stem-cell-line-csc-43j-from-a-patient-with-sporadic-parkinson-s-disease
#2
Ana Marote, Yuriy Pomeshchik, Stefano Goldwurm, Anna Collin, Nuno J Lamas, Luísa Pinto, António J Salgado, Laurent Roybon
An induced pluripotent stem cell (iPSC) line was generated from a 36-year-old patient with sporadic Parkinson's disease (PD). Skin fibroblasts were reprogrammed using the non-integrating Sendai virus technology to deliver OCT3/4, SOX2, c-MYC and KLF4 factors. The generated cell line (CSC-43) exhibits expression of common pluripotency markers, in vitro differentiation into three germ layers and normal karyotype. This iPSC line can be used to study the mechanisms underlying the development of PD.
January 4, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29334629/generation-of-a-human-induced-pluripotent-stem-cell-line-csc-42-from-a-patient-with-sporadic-form-of-parkinson-s-disease
#3
Ekaterina Savchenko, Ana Marote, Kaspar Russ, Anna Collin, Stefano Goldwurm, Laurent Roybon, Yuriy Pomeshchik
Skin fibroblasts were collected from a 44-year-old patient with sporadic case of Parkinson's disease (PD). The non-integrating Sendai virus vector encoding OCT3/4, SOX2, c-MYC and KLF4 was used to reprogram fibroblasts into induced pluripotent stem cells (iPSCs). Generated iPSCs had normal karyotypes, expressed common stem cell markers, and were capable of differentiating into all three germ layers. Generated line could be used for PD modeling to understand the mechanisms that influence the disorder.
January 4, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29334628/production-and-characterization-of-human-induced-pluripotent-stem-cells-ipscs-from-joubert-syndrome-cssi001-a-2850
#4
Jessica Rosati, Filomena Altieri, Silvia Tardivo, Elisa Maria Turco, Marina Goldoni, Iolanda Spasari, Daniela Ferrari, Laura Bernardini, Giuseppe Lamorte, Enza Maria Valente, Angelo Luigi Vescovi
Joubert Syndrome (JS) is a rare autosomal recessive or X-linked condition characterized by a peculiar cerebellar malformation, known as the molar tooth sign (MTS), associated with other neurological phenotypes and multiorgan involvement. JS is a ciliopathy, a spectrum of disorders whose causative genes encode proteins involved in the primary cilium apparatus. In order to elucidate ciliopathy-associated molecular mechanisms, human induced pluripotent stem cells (hiPSCs) were derived from a patient affected by JS carrying a homozygous missense mutation in the AHI1 gene (p...
January 9, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29334537/isolated-central-nervous-system-chloroma-as-a-presenting-sign-of-relapsed-pediatric-acute-lymphoblastic-leukemia
#5
Jessica L Heath, Waitman K Aumann, Charles M Maxfield, Daniel S Wechsler
Central nervous system (CNS) chloromas are an exceedingly rare presentation of CNS relapse in acute lymphoblastic leukemia (ALL). We report a relapsed ALL patient who presented with 2 separate chloromas and cerebrospinal fluid lymphoblastocytosis, and outline a treatment plan of systemic chemotherapy and CNS-directed radiation therapy. A review of the literature indicates that multiagent chemotherapy combined with CNS radiotherapy is effective, with hematopoietic stem cell transplantation used in half of reported cases...
January 12, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29334357/differential-requirements-of-androgen-receptor-in-luminal-progenitors-during-prostate-regeneration-and-tumor-initiation
#6
Chee Wai Chua, Nusrat J Epsi, Eva Y Leung, Shouhong Xuan, Ming Lei, Bo I Li, Sarah K Bergren, Hanina Hibshoosh, Antonina Mitrofanova, Michael M Shen
Master regulatory genes of tissue specification play key roles in stem/progenitor cells and are often important in cancer. In the prostate, androgen receptor (AR) is a master regulator essential for development and tumorigenesis, but its specific functions in prostate stem/progenitor cells have not been elucidated. We have investigated AR function in CARNs (CAstration-Resistant Nkx3.1-expressing cells), a luminal stem/progenitor that functions in prostate regeneration. Using genetically-engineered mouse models and novel prostate epithelial cell lines, we find that progenitor properties of CARNs are largely unaffected by AR deletion, apart from decreased proliferation in vivo...
January 15, 2018: ELife
https://www.readbyqxmd.com/read/29334242/development-and-disease-in-a-dish-the-epigenetics-of-neurodevelopmental-disorders
#7
Emily Ma Lewis, Kristen L Kroll
Human neurodevelopmental disorders (NDDs) involve mutations in hundreds of individual genes, with over-representation in genes encoding proteins that alter chromatin structure to modulate gene expression. Here, we highlight efforts to model these NDDs through in vitro differentiation of patient-specific induced pluripotent stem cells into neurons. We discuss how epigenetic regulation controls normal cortical development, how mutations in several classes of epigenetic regulators contribute to NDDs, and approaches for modeling cortical development and function using both directed differentiation and formation of cerebral organoids...
January 15, 2018: Epigenomics
https://www.readbyqxmd.com/read/29334173/microfluidic-templated-multicompartment-microgels-for-3d-encapsulation-and-pairing-of-single-cells
#8
Liyuan Zhang, Kaiwen Chen, Haoyue Zhang, Bo Pang, Chang-Hyung Choi, Angelo S Mao, Hongbing Liao, Stefanie Utech, David J Mooney, Huanan Wang, David A Weitz
Controlled encapsulation and pairing of single cells within a confined 3D matrix can enable the replication of the highly ordered cellular structure of human tissues. Microgels with independently controlled compartments that can encapsulate cells within separately confined hydrogel matrices would provide precise control over the route of pairing single cells. Here, a one-step microfluidic method is presented to generate monodisperse multicompartment microgels that can be used as a 3D matrix to pair single cells in a highly biocompatible manner...
January 15, 2018: Small
https://www.readbyqxmd.com/read/29333914/hybrid-pet-mri-imaging-in-healthy-unsedated-newborn-infants-with-quantitative-rcbf-measurements-using-15o-water-pet
#9
Julie B Andersen, Ulrich Lindberg, Oline V Olesen, Didier Benoit, Claes N Ladefoged, Henrik Bw Larsson, Liselotte Højgaard, Gorm Greisen, Ian Law
In this study, a new hybrid PET/MRI method for quantitative regional cerebral blood flow (rCBF) measurements in healthy newborn infants was assessed and the low values of rCBF in white matter previously obtained by arterial spin labeling (ASL) were tested. Four healthy full-term newborn subjects were scanned in a PET/MRI scanner during natural sleep after median intravenous injection of 14 MBq 15O-water. Regional CBF was quantified using a one-tissue-compartment model employing an image-derived input function (IDIF) from the left ventricle...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29333563/aldehyde-dehydrogenase-activity-in-adipose-tissue-isolation-and-gene-expression-profile-of-distinct-sub-population-of-mesenchymal-stromal-cells
#10
Mehdi Najar, Emerence Crompot, Leo A van Grunsven, Laurent Dollé, Laurence Lagneaux
Thanks to their relative abundance and easier collection, adipose tissue (AT) is considered an alternative source for the isolation of mesenchymal stromal cells (MSCs). MSCs have great therapeutic values and are thus under investigations for several clinical indications such as regenerative medicine and immunomodulation. In this work, we aimed to identify, isolate and characterize AT-MSCs based on their aldehyde dehydrogenase (ALDH) activity known to be a classical feature of stem cells. FACS technology allowed to isolate two different populations of AT-MSCs according to their ALDH activity (referred as ALDH+ and ALDH-)...
January 15, 2018: Stem Cell Reviews
https://www.readbyqxmd.com/read/29333411/successful-treatment-of-a-patient-with-myelodysplastic-syndrome-accompanied-by-pyoderma-gangrenosum-and-beh%C3%A3-et-s-disease-using-allogeneic-stem-cell-transplantation
#11
Seung-Shin Lee, Jae-Sook Ahn, Sook Jung Yun, Dong-Jin Park
No abstract text is available yet for this article.
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333408/is-long-term-storage-of-cryopreserved-stem-cells-for-hematopoietic-stem-cell-transplantation-a-worthwhile-exercise-in-developing-countries
#12
Santhosh Kumar Devadas, Minal Khairnar, Sumathi S Hiregoudar, Shashank Ojha, Sachin Punatar, Alok Gupta, Anant Gokarn, Pallavi Bhole, Sadhana Kannan, Navin Khattry
Background: Stem cell units (SCUs) that are cryopreserved prior to both autologous and allogeneic hematopoietic stem cell transplants (for donor lymphocyte infusion) remain unused or partially used several times, and become an increased burden to blood banks/SCU repositories. Because of the scarcity of data regarding the duration for which the storage is useful, there is no general consensus regarding disposal of SCUs. Methods: We conducted a retrospective audit of SCU utilization in 435 patients who planned to undergo either autologous stem cell transplantation (auto-SCT) (N=239) or allogeneic stem cell transplantation (allo-SCT) (N=196) at a tertiary cancer care center between November 2007 to January 2015...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333407/the-limited-role-of-serum-galactomannan-assay-in-screening-for-invasive-pulmonary-aspergillosis-in-allogeneic-stem-cell-transplantation-recipients-on-micafungin-prophylaxis-a-retrospective-study
#13
Ryul Kim, Youngil Koh, Dong-Yeop Shin, Pyoeng Gyun Choe, Nam Joong Kim, Sung-Soo Yoon, Myoung-Don Oh, Wan Beom Park, Inho Kim
Background: We evaluated the outcomes of serum galactomannan (GM) assay for the screening of invasive pulmonary aspergillosis (IPA) in allogeneic hematopoietic stem cell transplantation (alloHSCT) recipients while on primary antifungal prophylaxis (PAP). Methods: This study included patients with hematologic disorders who underwent alloHSCT from January 2013 to November 2015. Patients received routine PAP with fluconazole before 2014 and micafungin after 2014; serum GM tests were performed and retrospectively analyzed...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333406/stat3-expression-is-associated-with-poor-survival-in-non-elderly-adult-patients-with-newly-diagnosed-multiple-myeloma
#14
Sung-Hoon Jung, Seo-Yeon Ahn, Hyun-Woo Choi, Myung-Geun Shin, Seung-Shin Lee, Deok-Hwan Yang, Jae-Sook Ahn, Yeo-Kyeoung Kim, Hyeoung-Joon Kim, Je-Jung Lee
Background: Signal transducer and activator of transcription 3 (STAT3) is not only a key signaling molecule in the regulation of growth but is also involved in malignant transformation. We investigated the prognostic significance of STAT3 expression in 94 non-elderly adult patients (aged 38 to 65 yr) with newly diagnosed multiple myeloma (MM). Methods: Tumor cell-specific phosphotyrosine-STAT3 (PY-STAT3) expression at the time of diagnosis was evaluated with dual immunohistochemical (IHC) staining for PY-STAT3 and CD138...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333326/evaluation-of-the-periodontal-regenerative-properties-of-patterned-human-periodontal-ligament-stem-cell-sheets
#15
Joong-Hyun Kim, Seok-Yeong Ko, Justin Ho Lee, Deok-Ho Kim, Jeong-Ho Yun
Purpose: The aim of this study was to determine the effects of patterned human periodontal ligament stem cell (hPDLSC) sheets fabricated using a thermoresponsive substratum. Methods: In this study, we fabricated patterned hPDLSC sheets using nanotopographical cues to modulate the alignment of the cell sheet. Results: The hPDLSCs showed rapid monolayer formation on various surface pattern widths. Compared to cell sheets grown on flat surfaces, there were no significant differences in cell attachment and growth on the nanopatterned substratum...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29333263/vancomycin-resistant-enterococcus-infection-in-the-hematopoietic-stem-cell-transplant-recipient-an-overview-of-epidemiology-management-and-prevention
#16
REVIEW
Esther Benamu, Stanley Deresinski
Vancomycin-resistant enterococcus (VRE) is now one of the leading causes of nosocomial infections in the United States. Hematopoietic stem cell transplantation (HSCT) recipients are at increased risk of VRE colonization and infection. VRE has emerged as a major cause of bacteremia in this population, raising important clinical questions regarding the role and impact of VRE colonization and infection in HSCT outcomes as well as the optimal means of prevention and treatment. We review here the published literature and scientific advances addressing these thorny issues and provide a rational framework for their approach...
2018: F1000Research
https://www.readbyqxmd.com/read/29333114/carcinogenesis-induced-by-low-dose-radiation
#17
Igor Piotrowski, Katarzyna Kulcenty, Wiktoria Maria Suchorska, Agnieszka Skrobała, Małgorzata Skórska, Marta Kruszyna-Mochalska, Anna Kowalik, Weronika Jackowiak, Julian Malicki
Background: Although the effects of high dose radiation on human cells and tissues are relatively well defined, there is no consensus regarding the effects of low and very low radiation doses on the organism. Ionizing radiation has been shown to induce gene mutations and chromosome aberrations which are known to be involved in the process of carcinogenesis. The induction of secondary cancers is a challenging long-term side effect in oncologic patients treated with radiation. Medical sources of radiation like intensity modulated radiotherapy used in cancer treatment and computed tomography used in diagnostics, deliver very low doses of radiation to large volumes of healthy tissue, which might contribute to increased cancer rates in long surviving patients and in the general population...
December 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/29333099/pulsed-radiofrequency-applied-to-the-sciatic-nerve-improves-neuropathic-pain-by-down-regulating-the-expression-of-calcitonin-gene-related-peptide-in-the-dorsal-root-ganglion
#18
Hao Ren, Hailong Jin, Zipu Jia, Nan Ji, Fang Luo
Background: Clinical studies have shown that applying pulsed radiofrequency (PRF) to the neural stem could relieve neuropathic pain (NP), albeit through an unclear analgesic mechanism. And animal experiments have indicated that calcitonin gene-related peptide (CGRP) expressed in the dorsal root ganglion (DRG) is involved in generating and maintaining NP. In this case, it is uncertain whether PRF plays an analgesic role by affecting CGRP expression in DRG. Methods: Rats were randomly divided into four groups: Groups A, B, C, and D...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29333091/in-vitro-and-in-vivo-effects-of-mirna-19b-20a-92a-on-gastric-cancer-stem-cells-and-the-related-mechanism
#19
Qianwen Shao, Jing Xu, Xin Guan, Bing Zhou, Wei Wei, Rong Deng, Dongzhen Li, Xinyu Xu, Haitao Zhu
We aimed to analyze the in vitro and in vivo effects of miRNA-19b/20a/92a on gastric cancer stem cells (GCSCs) and the related mechanism. GCSCs were cultured until adherence and differentiation, and subjected to miRNA microarray analysis to find and to verify miRNA deletion. Cells stably expressing lentivirus carrying miRNA-19b/20a/92a were constructed by transfection. The relationship between miRNA-19b/20a/92a and renewal of GCSCs was studied by the tumor sphere assay, and that between miRNA-19b/20a/92a and their proliferation was explored with MTT and colony formation assays...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29333086/ethical-and-safety-issues-of-stem-cell-based-therapy
#20
REVIEW
Vladislav Volarevic, Bojana Simovic Markovic, Marina Gazdic, Ana Volarevic, Nemanja Jovicic, Nebojsa Arsenijevic, Lyle Armstrong, Valentin Djonov, Majlinda Lako, Miodrag Stojkovic
Results obtained from completed and on-going clinical studies indicate huge therapeutic potential of stem cell-based therapy in the treatment of degenerative, autoimmune and genetic disorders. However, clinical application of stem cells raises numerous ethical and safety concerns. In this review, we provide an overview of the most important ethical issues in stem cell therapy, as a contribution to the controversial debate about their clinical usage in regenerative and transplantation medicine. We describe ethical challenges regarding human embryonic stem cell (hESC) research, emphasizing that ethical dilemma involving the destruction of a human embryo is a major factor that may have limited the development of hESC-based clinical therapies...
2018: International Journal of Medical Sciences
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