Changing stroke rehab and research worldwide now.Time is Brain! trillions and trillions of neurons that DIE each day because there are NO effective hyperacute therapies besides tPA(only 12% effective). I have 523 posts on hyperacute therapy, enough for researchers to spend decades proving them out. These are my personal ideas and blog on stroke rehabilitation and stroke research. Do not attempt any of these without checking with your medical provider. Unless you join me in agitating, when you need these therapies they won't be there. Did your doctor somehow miss the recovery protocol that Pedro Bach-y-Rita used to recover fully back in 1958 with only a partial brain?

What this blog is for:

My blog is not to help survivors recover, it is to have the 10 million yearly stroke survivors light fires underneath their doctors, stroke hospitals and stroke researchers to get stroke solved. 100% recovery. The stroke medical world is completely failing at that goal, they don't even have it as a goal. Shortly after getting out of the hospital and getting NO information on the process or protocols of stroke rehabilitation and recovery I started searching on the internet and found that no other survivor received useful information. This is an attempt to cover all stroke rehabilitation information that should be readily available to survivors so they can talk with informed knowledge to their medical staff. It lays out what needs to be done to get stroke survivors closer to 100% recovery. It's quite disgusting that this information is not available from every stroke association and doctors group.

Showing posts with label neural regeneration. Show all posts
Showing posts with label neural regeneration. Show all posts

Wednesday, September 2, 2026

Nanoparticles regenerate neurons and improve cognition in Alzheimer’s mice

Will your competent? doctor and hospital get followup research initiated that will create protocols that prevent Alzheimers or be used in recovering from a stroke?

Do you prefer your doctor, hospital and board of director's incompetence NOT KNOWING? OR NOT DOING? Your choice; let them be incompetent or demand action!

Your doctor is responsible for preventing this! Is s/he willing to prevent this?

1. A documented 33% dementia chance post-stroke from an Australian study?   May 2012.

2. Then this study came out and seems to have a range from 17-66%. December 2013.`    

3. A 20% chance in this research.   July 2013.

4. Dementia Risk Doubled in Patients Following Stroke September 2018 

The latest here:

 Nanoparticles regenerate neurons and improve cognition in Alzheimer’s mice

The adult human brain has limited capacity to repair or regenerate neurons lost to Alzheimer's disease, the most common type of dementia. Existing treatments can slow disease progression but do not reverse cognitive decline. In a study publishing in the Cell Press journal Cell Biomaterials on August 26, researchers show that engineered nanoparticles can not only regenerate neurons in human brain organoids but also restore neural circuits and improve cognition in mice. 

The new neurons can become mature and survive. We also confirmed much higher neuron density in the brains of treated mice." 

Peisheng Xu, corresponding author, professor of pharmaceutics, University of South Carolina

Xu's team studied a polymer nanogel system called Nano-ERASER that uses antibodies to degrade targeted proteins. They used the system to permeate the blood-brain barrier and enter astrocytes, which are star-shaped support cells abundant in the central nervous system. Within the astrocytes, Nano-ERASER deployed antibodies to break down a protein called PTBP1, triggering the astrocytes to convert to neurons. 

Compared to gene-editing tools like CRISPR, Nano-ERASER does not modify DNA and its cell reprogramming is reversible. 

"We hope this can be more effective and also safer," Xu says. "We don't need to worry about the potential side effects caused on the genetic level." 

First, the researchers applied Nano-ERASER to human astrocyte cultures, as well as human organoids designed to mimic brains with Alzheimer's disease. In both models, PTBP1 levels were reduced, prompting the conversion of astrocytes to neurons. Further testing revealed these new neurons were functional. 

Next, the team treated mice with Alzheimer's disease. Over several weeks, their nesting skills recovered, and they completed a water maze more efficiently than before, suggesting improved learning and memory. In addition, the mouse brains showed increased neuron density and reduced neuroinflammation and amyloid-beta protein buildup, a hallmark of Alzheimer's disease. 

"After just two injections, these mice became smarter," Xu says. "Even after one injection, we already saw these mice's behavior differ from that of the nontreated ones." 

The findings mark a critical step in regenerative neuroscience, Xu says, in part because previous research has debated whether PTBP1 suppression alone could induce in vivo neuroregeneration. 

Though this study does not prove that Nano-ERASER treats Alzheimer's disease in humans, Xu says it offers a roadmap for a potential cure. He and his colleagues plan to evaluate the platform for longer-term efficacy, test it in nonhuman primates, and one day begin human clinical trials. 

"If we can advance it to the clinic, then we can have hope for patients with Alzheimer's disease," Xu says. 

Source:
Journal reference:

Wang, M., et al. (2026). Reverse the progression of Alzheimer’s disease through Nano-ERASER-based adult neuroregeneration. Cell Biomaterials. DOI: 10.1016/j.celbio.2026.100575. https://www.cell.com/cell-biomaterials/fulltext/S3050-5623(26)00231-X

Friday, November 8, 2024

Soft, precision engineered porous, hydrogel scaffolds mechanically tailored toward applications in the central nervous system

 You'll have to ask your competent? doctor when this will become a working solution for stroke patients so you can delay your next stroke until then.

Soft, precision engineered porous, hydrogel scaffolds mechanically tailored toward applications in the central nervous system

Abstract

Diseases and traumatic injuries to the central nervous system (CNS) demand the development of new biomaterials to improve healing and treatment options. Matching material mechanical properties to specific tissues and optimizing material porous structures are central goals for improving biomaterials. However, biomaterials with both precision-controlled porous structures and brain-matched mechanical properties (low modulus) are still lacking. In this study, we developed soft hydrogel scaffolds with mechanical properties similar to that of CNS tissues, and a uniform 40 µm porous structure—40 µm pores have been shown to be optimal for healing in many tissues. The two characteristics were achieved by a new fabrication process combining phase separation and sphere templating. The resulting scaffolds are non-cytotoxic according to the ISO 10993-5 standard. In addition, the three-dimensional culture of microglial cells within the scaffolds demonstrates cell attachment and maintenance of a rounded, quiescent morphology, potentially due to spatial confinement. These results justify further in vivo studies and suggest broad potential in CNS applications, such as brain-computer interfaces, neural regeneration, and basic neurobiology.
Subject classification codes: Neural Interfaces, soft hydrogel, synthetic biomaterials

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Saturday, December 19, 2015

Nanotechnology-Based Approaches for Guiding Neural Regeneration

If we are not going to fix the problems with the neuronal cascade of death then we should be spending our money on this.
http://pubs.acs.org/doi/abs/10.1021/acs.accounts.5b00345

Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, United States
Acc. Chem. Res., Article ASAP
DOI: 10.1021/acs.accounts.5b00345
Publication Date (Web): December 14, 2015
Copyright © 2015 American Chemical Society
*Phone: +1-848-445-2081. Fax: +1-732-445-5312. E-mail: kblee@rutgers.edu.
Biography
Shreyas Shah received his Ph.D. in Chemistry and Chemical Biology from Rutgers University (New Brunswick, NJ). His doctoral research focused on developing nanomaterial-based 2D/3D scaffolds for neural regeneration, neural drug delivery, and neuromodulation. He is currently building a new lab/program in Physiological Communications at Bell Labs located in Murray Hill, NJ.
Biography
Aniruddh Solanki received his Ph.D. in Chemistry and Chemical Biology from Rutgers University (New Brunswick, NJ). He is currently pursuing his postdoctoral research at Brigham and Women’s Hospital and the Harvard Medical School.
Biography
Ki-Bum Lee is an Associate Professor of Chemistry and Chemical Biology at Rutgers University (New Brunswick, NJ). His research interest is to develop and integrate nanotechnologies and chemical functional genomics to modulate signaling pathways in cells toward specific cell lineages or behaviors.

Abstract

Abstract Image
Conspectus
The mammalian brain is a phenomenal piece of “organic machinery” that has fascinated scientists and clinicians for centuries. The intricate network of tens of billions of neurons dispersed in a mixture of chemical and biochemical constituents gives rise to thoughts, feelings, memories, and life as we know it. In turn, subtle imbalances or damage to this system can cause severe complications in physical, motor, psychological, and cognitive function. Moreover, the inevitable loss of nerve tissue caused by degenerative diseases and traumatic injuries is particularly devastating because of the limited regenerative capabilities of the central nervous system (i.e., the brain and spinal cord).
Among current approaches, stem-cell-based regenerative medicine has shown the greatest promise toward repairing and regenerating destroyed neural tissue. However, establishing controlled and reliable methodologies to guide stem cell differentiation into specialized neural cells of interest (e.g., neurons and oligodendrocytes) has been a prevailing challenge in the field. In this Account, we summarize the nanotechnology-based approaches our group has recently developed to guide stem-cell-based neural regeneration. We focus on three overarching strategies that were adopted to selectively control this process.
First, soluble microenvironmental factors play a critical role in directing the fate of stem cells. Multiple factors have been developed in the form of small-molecule drugs, biochemical analogues, and DNA/RNA-based vectors to direct neural differentiation. However, the delivery of these factors with high transfection efficiency and minimal cytotoxicity has been challenging, especially to sensitive cell lines such as stem cells. In our first approach, we designed nanoparticle-based systems for the efficient delivery of such soluble factors to control neural differentiation. Our nanoparticles, comprising either organic or inorganic elements, were biocompatible and offered multifunctional capabilities such as imaging and delivery.
Moving from the soluble microenvironment in which cells are immersed to the underlying surface, cells can sense and consequently respond to the physical microenvironment in which they reside. For instance, changes in cell adhesion, shape, and spreading are key cellular responses to surface properties of the underlying substrate. In our second approach, we modulated the surface chemistry of two-dimensional substrates to control neural stem cell morphology and the resulting differentiation process. Patterned surfaces consisting of immobilized extracellular matrix (ECM) proteins and/or nanomaterials were generated and utilized to guide neuronal differentiation and polarization.
In our third approach, building on the above-mentioned approaches, we further tuned the cell–ECM interactions by introducing nanotopographical features in the form of nanoparticle films or nanofiber scaffolds. Besides providing a three-dimensional surface topography, our unique nanoscaffolds were observed to enhance gene delivery, facilitate axonal alignment, and selectively control differentiation into neural cell lines of interest. Overall, nanotechnology-based approaches offer the precise physicochemical control required to generate tools suitable for applications in neuroscience.