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International Journal of Stem Cells

Sharmila Hussain, Ramasamy Tamizhselvi, Leema George, Venkatraman Manickam
Background and Objectives: Morinda citrifolia (Noni), an important traditional medicinal plant still used in patients with bone fractures or dislocation to promote connective tissue repair and to reduce inflammation. However, the effects of Noni on bone metabolism and whether it influences the osteogenic differentiation is yet to be clarified. In this study, we investigated the effect of Morinda citrifolia (Noni) juice on the proliferation rate of rat bone marrow derived mesenchymal stem cells (BMSC) and the osteoblastic differentiation as shown by alkaline phosphatase (ALP), Runt-related transcription factor 2 (Runx2) and osteocalcin (OCN) mRNA expression in vitro...
August 31, 2016: International Journal of Stem Cells
Neeraj Malhotra
iPS cells are derived from somatic cells via transduction and expression of selective transcription factors. Both viral-integrating (like retroviral) and non-integrating (like, mRNA or protein-based) techniques are available for the production of iPS cells. In the field of dentistry, iPS cells have been derived from stem cells of apical papilla, dental pulp stem cells, and stem cells from exfoliated deciduous teeth, gingival and periodontal ligament fibroblasts, and buccal mucosa fibroblasts. iPS cells have the potential to differentiate into all derivatives of the 3 primary germ layers i...
August 31, 2016: International Journal of Stem Cells
Lamiaa Ibrahim AbdEl Fattah, Maha Baligh Zickri, Lobna Abdel Aal, Ola Heikal, Esraa Osama
Background and Objectives: Alzheimer's disease (AD) is the most common form of dementia among older persons. Thymoquinone (TQ) has anti-inflammatory, anticonvulsant and antioxidant activity. A novel α7 nicotinic acetyl choline receptor (α7 nAChR ) agonist (PNU- 282987) have been identified to enhance the cognitive performance. An alternative treatment strategy via compounds known as nicotinic "positive allosteric modulators" (PAMs) has been reported. This study was designed to investigate the combination of PAM of α7 nAChRs with PNU- 282987 or with TQ as a possible treatment for AD in rat...
August 31, 2016: International Journal of Stem Cells
Xiaohuan Xia, Iqbal Ahmad
Müller glia (MG) are the primary support cells in the vertebrate retina, regulating homeostasis in one of the most metabolically active tissues. In lower vertebrates such as fish, they respond to injury by proliferating and reprogramming to regenerate retinal neurons. In mammals, MG may also react to injury by proliferating, but they fail to initiate regeneration. The barriers to regeneration could be intrinsic to mammalian MG or the function of the niche that cannot support the MG reprogramming required for lineage conversion or both...
August 31, 2016: International Journal of Stem Cells
Marianne Camargos Dias, Fernanda da Cruz Landim-Alvarenga, Carolina Nogueira de Moraes, Leonardo Dourado da Costa, Caroline Medeiros Geraldini, Vânia Maria de Vasconcelos Machado, Leandro Maia
Background and Objectives: Mesenchymal stromal cells (MSCs) have great therapeutic potential, particularly in the process of tissue repair and immunomodulation through the secretion of biomolecules. Thus, the aim of this study was to evaluate the hypothesis that intramuscular transplantation of allogeneic MSCs obtained from equine umbilical cord (UC-MSCs) is safe, demonstrating that this is a suitable source of stem cells for therapeutic use. Methods and Results: For this, UC-MSCs were cultured, characterized and cryopreserved for future transplantation in six healthy mares...
August 31, 2016: International Journal of Stem Cells
Mohammad Ghasemzadeh-Hasankolaei, Roozali Batavani, Mohamadreza Baghaban Eslaminejad, Foroughazam Sayahpour
Background: Mesenchymal stem cells (MSCs), have been suggested as a potential choice for treatment of male infertility. Yet, the effects of MSCs on regeneration of germinal epithelium of seminiferous tubules and recovery of spermatogenesis have remained controversial. In this research, we have evaluated and compared the fate of autologous bone marrow (BM)-MSCs during three different periods of time- 4, 6 and 8 weeks after transplantation into the testes of busulfan-induced infertile male rats...
July 20, 2016: International Journal of Stem Cells
U Deniz Dincer
Endothelium represents a defense barrier and responds and integrates neuro humoral stimulus which describes as a compensatory mechanism. Endothelium formed with endothelial cells (ECs) and their progenitors. Endothelial progenitor cells (EPCs) represent minor subpopulation of mononuclear cells in the blood. During acute hypoxia, larger amount of EPCs mobilize into the peripheral blood and they directly contribute revascularization process. One of the subtypes of EPC is termed endothelial colony forming cells (ECFCs) which they possess de novo vessel-forming ability...
May 30, 2016: International Journal of Stem Cells
Mohammad K El-Badrawy, Nesrien M Shalabi, Mie A Mohamed, Amany Ragab, Heba Wagih Abdelwahab, Nahla Anber, Mohamed A Sobh, Yomna Khater, Aziza A Abdel Hamid
BACKGROUND: In severe chronic stages of emphysema the only treatment is lung transplantation. SO, an urgent need exists for the development of effective treatments. Stem cells therapy arises as a new therapeutic approach. AIM OF THE WORK: To investigate whether bone marrow mononuclar cells (BMMNCs) can promote lung regeneration and decrease apoptosis in lipopolysaccharide (LPS) induced pulmonary emphysema in C57Bl/6 mice. MATERIAL AND METHODS: 14 weeks old female mice (C57Bl/6), weighing around 25 g were used in this study...
May 30, 2016: International Journal of Stem Cells
Maria Rosaria De Pascale, Giuseppe Bruzzese, Ettore Crimi, Vincenzo Grimaldi, Antonio Liguori, Sergio Brongo, Michelangela Barbieri, Antonietta Picascia, Concetta Schiano, Linda Sommese, Nicola Ferrara, Giuseppe Paolisso, Claudio Napoli
BACKGROUND: Circulating endothelial progenitors cells (EPCs) play a critical role in neovascularization and endothelial repair. There is a growing evidence that hyperglycemia related to Diabetes Mellitus (DM) decreases EPC number and function so promoting vascular complications. AIM OF THE STUDY: This study investigated whether an intensive glycemic control regimen in Type 2 DM can increase the number of EPCs and restores their function. METHODS: Sixty-two patients with Type 2 DM were studied...
May 30, 2016: International Journal of Stem Cells
Diana Legzdina, Anete Romanauska, Sergey Nikulshin, Tatjana Kozlovska, Uldis Berzins
BACKGROUND AND OBJECTIVES: Adipose-derived mesenchymal stem cells (ADSCs) are promising candidates in regenerative medicine. The need for in vitro propagation to obtain therapeutic quantities of the cells imposes a risk of impaired functionality due to cellular senescence. The aim of the study was to analyze in vitro senescence of previously cryopreserved human ADSCs subjected to serial passages in cell culture. METHODS AND RESULTS: ADSC cultures from 8 donors were cultivated until proliferation arrest was reached...
May 30, 2016: International Journal of Stem Cells
Ghaem Aliborzi, Akbar Vahdati, Davood Mehrabani, Seyed Ebrahim Hosseini, Amin Tamadon
BACKGROUND: Mesenchymal stem cells (MSCs) from different sources have different characteristics. Moreover, MSCs are not isolated and characterized in Guinea pig for animal model of cell therapy. AIM OF THE WORK: was the isolating of bone marrow MSCs (BM-MSCs) and adipose tissue MSCs (AT-MSCs) from Guinea pig and assessing their characteristics. MATERIAL AND METHODS: In this study, bone marrow and adipose tissue were collected from three Guinea pigs and cultured and expanded through eight passages...
May 30, 2016: International Journal of Stem Cells
Raheleh Farahzadi, Seyed Alireza Mesbah-Namin, Nosratollah Zarghami, Ezzatollah Fathi
BACKGROUND AND OBJECTIVES: Human mesenchymal stem cells (hMSCs) are attractive candidates for cell therapy and regenerative medicine due to their multipotency and ready availability, but their application can be complicated by the factors such as age of the donors and senescence-associated growth arrest during culture conditions. The latter most likely reflects the fact that aging of hMSCs is associated with a rise in intracellular reactive oxygen species, loss of telomerase activity, decrease in human telomerase reverse transcriptase (hTERT) expression and finally eroded telomere ends...
May 30, 2016: International Journal of Stem Cells
Heba Fikry, Sara Abdel Gawad, Walaa Baher
BACKGROUND AND OBJECTIVES: Bone marrow derived mesenchymal stem cells (BM-MSCs) have been proposed as effective treatment of many diseases owing to their unique ability to differentiate into other cell types in vivo. Schistosoma mansoni (S. mansoni) infection is characterized by hepatic granuloma formation around schistosome eggs at acute stage of infection, followed by hepatic fibrosis at chronic and advanced stages. Whether BM-MSCs have an ameliorative effect on hepatic tissue injury caused by S...
May 30, 2016: International Journal of Stem Cells
Nassim H Abi Chahine, Tarek W Wehbe, Ramzi A Hilal, Victoria V Zoghbi, Alia E Melki, Emil B Bou Habib
Cerebral Palsy (CP) is a disabling condition that affects a child's life and his/her family irreversibly. It is usually a non-progressive condition but improvement over time is rarely seen. The condition can be due to prenatal hypoxia, metabolic, genetic, infectious, traumatic or other causes. It is therefore a heterogeneous group that results in functional motor disability associated with different degrees of cognitive abnormalities. There are no treatments that can cure or even improve CP and the best available approach aims at functional, social and nutritional supportive care and counseling...
May 30, 2016: International Journal of Stem Cells
Fatma E Moustafa, Mohamed-A Sobh, Mohamed Abouelkheir, Youmna Khater, Khalid Mahmoud, Mohamed-Ahdy Saad, Mohamed A Sobh
BACKGROUND AND OBJECTIVES: Mesenchymal stem cells (MSCs) have been shown to ameliorate cisplatin-induced acute kidney injury (AKI). The present study compares the efficacy of different routes of MSCs administration on kidney damage and regeneration after cisplatin-induced AKI. METHODS: A single intraperitoneal injection of cisplatin (5 mg/kg) was used to induce AKI in 160 rats. MSCs (5×10⁶) were given by either intravenous, intra-arterial or kidney sub capsular injection one day after cisplatin injection...
May 30, 2016: International Journal of Stem Cells
Fatma Al-Husseiny, Mohamed Ahmed Sobh, Rehab H Ashour, Samah Foud, Tarek Medhat, Abdel-Hady El-Gilany, Doaa Elghannam, Hassan Abdel-Ghaffar, Mohamed-Ahdy Saad, Mohamed Sobh
BACKGROUND AND OBJECTIVES: Cisplatin is a nephrotoxic chemotherapeutic agent. So, preventive measures worth to be evaluated. Human amniotic fluid stem cells (hAFSCs) in prevention or amelioration of cisplatin-induced acute kidney injury (AKI) in Sprague-Dawley rates have been tested. METHODS: 80 Sprague-Dawley rats (250~300 g) were used and divided into 4 major groups, 20 rats each. Group I: Saline-injected group. Group II: Cisplatin-injected group (5 mg/kg I.P)...
May 30, 2016: International Journal of Stem Cells
Shabari Sarang, Chandra Viswanathan
BACKGROUND AND OBJECTIVES: Type 1 Diabetes Mellitus (T1DM) is an autoimmune disorder resulting out of T cell mediated destruction of pancreatic beta cells. Immunomodulatory properties of mesenchymal stem cells may help to regenerate beta cells and/or prevent further destruction of remnant, unaffected beta cells in diabetes. We have assessed the ability of umbilical cord derived MSCs (UCMSCs) to differentiate into functional islet cells in vitro. METHODS AND RESULTS: We have isolated UCMSCs and allowed sequential exposure of various inducing agents and growth factors...
May 30, 2016: International Journal of Stem Cells
Cristopher Geiler, Inez Andrade, Alexandra Clayton, Daniel Greenwald
BACKGROUND: Engineered blood has the greatest potential to combat a predicted future shortfall in the US blood supply for transfusion treatments. Engineered blood produced from hematopoietic stem cell (HSC) derived red blood cells in a laboratory is possible, but critical barriers exist to the production of clinically relevant quantities of red blood cells required to create a unit of blood. Erythroblasts have a finite expansion capacity and there are many negative regulatory mechanisms that inhibit in vitro erythropoiesis...
May 30, 2016: International Journal of Stem Cells
Dina Sabry, Olfat Noh, Mai Samir
Understanding the mechanisms of vascular remodeling could lead to more effective treatments for ischemic conditions. We aimed to compare between the abilities of both human Wharton jelly derived mesenchymal stem cells (hMSCs) and human cord blood endothelial progenitor cells (hEPCs) and CD34⁺ to induce angiogenesis in vitro. hMSCs, hEPCs, and CD34⁺ were isolated from human umbilical cord blood using microbead (MiniMacs). The cells characterization was assessed by flow cytometry following culture and real-time PCR for vascular endothelial growth factor receptor 2 (VEGFR2) and von Willebrand factor (vWF) to prove stem cells differentiation...
May 30, 2016: International Journal of Stem Cells
Shilpa Sharma, Gangenahalli Gurudutta
Hematopoietic stem cells are endowed with a distinct potential to bolster self-renewal and to generate progeny that differentiate into mature cells of myeloid and lymphoid lineages. Both hematopoietic stem cells and mature cells have the same genome, but their gene expression is controlled by an additional layer of epigenetics such as DNA methylation and post-translational histone modifications, enabling each cell-type to acquire various forms and functions. Until recently, several studies have largely focussed on the transcription factors andniche factors for the understanding of the molecular mechanisms by which hematopoietic cells replicate and differentiate...
May 30, 2016: International Journal of Stem Cells
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