Subependymal zone stem cells and progenitor migration to brain injuries: a critical analysis

2012 ◽  
Vol 2012 (1) ◽  
pp. 41
Author(s):  
Francis Szele
Author(s):  
Prithiv K R Kumar

Stem cells have the capacity to differentiate into any type of cell or organ. Stems cell originate from any part of the body, including the brain. Brain cells or rather neural stem cells have the capacitive advantage of differentiating into the central nervous system leading to the formation of neurons and glial cells. Neural stem cells should have a source by editing DNA, or by mixings chemical enzymes of iPSCs. By this method, a limitless number of neuron stem cells can be obtained. Increase in supply of NSCs help in repairing glial cells which in-turn heal the central nervous system. Generally, brain injuries cause motor and sensory deficits leading to stroke. With all trials from novel therapeutic methods to enhanced rehabilitation time, the economy and quality of life is suppressed. Only PSCs have proven effective for grafting cells into NSCs. Neurons derived from stem cells is the only challenge that limits in-vitro usage in the near future.


2011 ◽  
Vol 6 (3) ◽  
pp. 327-336 ◽  
Author(s):  
Serdar Kabatas ◽  
Tufan Cansever ◽  
Erdinc Civelek ◽  
Cem Yilmaz

Obiter ◽  
2021 ◽  
Vol 34 (3) ◽  
Author(s):  
Larisse Prinsen

During 2011 health law grew by the addition of eight new Regulations dealing with stem cells and related matters. This added to the already existing six of Regulations which had been sporadically published since 2007. All these Regulations supplement the National Health Act of 2003. This legislative excess begs the question: Why has it been at all necessary to flood the legislative landscape surrounding the Act. The Act is a complex one and it entrenches various health policy principles. It is also framework-legislation meaning that only broad legal guidelines are provided and it must be “fleshed out” in Regulations. This however does not satisfy the question as to why this “fleshing out” has been done so overwhelmingly considering the period of time which the Act has been in force and keeping in mind these Regulations apply only to a single chapter of the Act. The aim of this article is thus an analysis of certain provisions in chapter 8 of the Act which will entail an explanation of its content, followed by a dissection thereof and suggestions. Ultimately, this article attempts to illustrate thatstem cell research, therapy and technology in general is not sufficiently regulated by chapter 8 which is so fatally flawed that it is almost dead legislation. It is recommended that new and comprehensive, updated and corresponding Regulations be drafted to supplement and correct the Act.


2021 ◽  
Vol 12 (4) ◽  
pp. 64
Author(s):  
Sahitya Chetan Pandanaboina ◽  
Ambar B. RanguMagar ◽  
Krishna D. Sharma ◽  
Bijay P. Chhetri ◽  
Charlette M. Parnell ◽  
...  

Transplantation of differentiated and fully functional neurons may be a better therapeutic option for the cure of neurodegenerative disorders and brain injuries than direct grafting of neural stem cells (NSCs) that are potentially tumorigenic. However, the differentiation of NSCs into a large population of neurons has been a challenge. Nanomaterials have been widely used as substrates to manipulate cell behavior due to their nano-size, excellent physicochemical properties, ease of synthesis, and versatility in surface functionalization. Nanomaterial-based scaffolds and synthetic polymers have been fabricated with topology resembling the micro-environment of the extracellular matrix. Nanocellulose materials are gaining attention because of their availability, biocompatibility, biodegradability and bioactivity, and affordable cost. We evaluated the role of nanocellulose with different linkage and surface features in promoting neuronal differentiation. Nanocellulose coupled with lysine molecules (CNC–Lys) provided positive charges that helped the cells to attach. Embryonic rat NSCs were differentiated on the CNC–Lys surface for up to three weeks. By the end of the three weeks of in vitro culture, 87% of the cells had attached to the CNC–Lys surface and more than half of the NSCs had differentiated into functional neurons, expressing endogenous glutamate, generating electrical activity and action potentials recorded by the multi-electrode array.


2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Le Zhang ◽  
Wenjing Tao ◽  
Hua Feng ◽  
Yujie Chen

Hemorrhagic stroke is a life-threatening disease characterized by a sudden rupture of cerebral blood vessels, and it is widely believed that neural cell death occurs after exposure to blood metabolites or subsequently damaged cells. Neural stem cells (NSCs), which maintain neurogenesis and are found in subgranular zone and subventricular zone, are thought to be an endogenous neuroprotective mechanism for these brain injuries. However, due to the complexity of NSCs and their microenvironment, current strategies cannot satisfactorily enhance functional recovery after hemorrhagic stroke. It is well known that transcriptional and genomic pathways play important roles in ensuring the normal functions of NSCs, including proliferation, migration, differentiation, and neural reconnection. Recently, emerging evidence from the use of new technologies such as next-generation sequencing and transcriptome profiling has provided insight into our understanding of genomic function and regulation of NSCs. In the present article, we summarize and present the current data on the control of NSCs at both the transcriptional and genomic levels. Using bioinformatics methods, we sought to predict novel therapeutic targets of endogenous neurogenesis and exogenous NSC transplantation for functional recovery after hemorrhagic stroke, which could also advance our understanding of its pathophysiology.


2017 ◽  
Vol 23 (6) ◽  
pp. 605-615 ◽  
Author(s):  
Vanessa Donega ◽  
Olivier Raineteau

There is growing evidence for a tentative cellular repair in the forebrain following perinatal injuries. In this review, we present the evidences and shortcomings in this regenerative attempt. We discuss recent progress in elucidating the origin, diversity, and competence of postnatal neural stem cells/progenitor cells. Finally, we propose new strategies to recruit postnatal progenitors to generate specific subtypes of cortical neurons or oligodendrocytes, thereby allowing the development of tailor-made approaches to treat perinatal brain injuries.


2013 ◽  
Vol 534 (1-2) ◽  
pp. 11-19 ◽  
Author(s):  
Eva Porlan ◽  
Ana Perez-Villalba ◽  
Ana C. Delgado ◽  
Sacri R. Ferrón

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