Dendrimer Grafted Albumin Nanoparticles for the Treatment of Post Cerebral Stroke Damages: A Proof of Concept Study

Publication date: Available online 3 September 2019Source: Colloids and Surfaces B: BiointerfacesAuthor(s): Deepak Pradhan, Vishakha Tambe, Nidhi Raval, Piyush Gondalia, Pallab Bhattacharya, Kiran Kalia, Rakesh K. TekadeAbstractStroke is the second largest disease of mortality. The biggest hurdle in designing effective brain drug delivery systems is offered by the blood-brain barrier (BBB), which is highly impermeable to many drugs. Albumin nanoparticles (NP) have gained attention due to their multiple ligand binding sites and long circulatory half-life. Citicoline (CIT) is reported to enhance the acetylcholine secretion in the brain and also helps in membrane repair and regeneration. However, the poor BBB permeation of CIT results in lower levels of CIT in the brain. This demands the development of a suitable delivery platform to completely realize the therapeutic benefit of CIT in stroke therapy. This investigation reports the synthesis and characterization of second generation (2.0 G) dendrimer Amplified Albumin (dAA) biopolymer by FTIR, MALDI-TOF, and surface charge (mV). Further, the synthesized biopolymer has been utilized to develop a CIT nanoformulation using a commercially translatable one-pot process. Release of CIT from biopolymer was performed within an acetate buffer at pH 5 and Phosphate buffer at pH 7.4. Further, we investigated the ability of biopolymer to permeate BBB by in vitro permeability assay in bEnd.3 cells. MTT assay of CIT-dAA-NP, CIT-ANP, and...
Source: Colloids and Surfaces B: Biointerfaces - Category: Biochemistry Source Type: research

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In this study, we report the effects of short-term preconditioning of hMSCs via three-dimensional (3D) aggregation on stroke lesion recovery after intra-arterial (IA) transplantation of 3D aggregate-derived hMSCs (Agg-D hMSCs) in a transient middle cerebral artery occlusion (MCAO) stroke model. Compared with two-dimensional (2D) monolayer culture, Agg-D hMSCs exhibited increased resistance to ischemic stress, secretory function and therapeutic outcome. Short-term preconditioning via 3D aggregation reconfigured hMSC energy metabolism and altered redox cycle, which activated the PI3K/AKT pathway and enhanced resistance to in...
Source: Cytotherapy - Category: Cytology Source Type: research
Publication date: Available online 14 September 2019Source: Journal of Vascular and Interventional RadiologyAuthor(s): David L. Dornbos, Shahid M. Nimjee, Tony P. SmithAbstractInadvertent arterial placement of central venous catheters carries serious sequelae, including pseudoaneurysm development and stroke. Although numerous strategies for therapeutic repair after arterial injury have been employed, no treatment provides a definitive standard of care. All articles published between January 2000 and July 2018 involving the placement of central venous catheters in the brachiocephalic or subclavian arteries, carotid artery, ...
Source: Journal of Vascular and Interventional Radiology - Category: Radiology Source Type: research
In this study, researchers studied 438,952 participants in the UK Biobank, who had a total of 24,980 major coronary events - defined as the first occurrence of non-fatal heart attack, ischaemic stroke, or death due to coronary heart disease. They used an approach called Mendelian randomisation, which uses naturally occurring genetic differences to randomly divide the participants into groups, mimicking the effects of running a clinical trial. People with genes associated with lower blood pressure, lower LDL cholesterol, and a combination of both were put into different groups, and compared against those without thes...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Inadvertent arterial placement of central venous catheters carries serious sequelae, including pseudoaneurysm development and stroke. Although numerous strategies for therapeutic repair after arterial injury have been employed, no treatment provides a definitive standard of care. All articles published between January 2000 and July 2018 involving the placement of central venous catheters in the brachiocephalic or subclavian arteries, carotid artery, vertebral artery, and aortic arch and subsequent treatment were systematically reviewed.
Source: Journal of Vascular and Interventional Radiology : JVIR - Category: Radiology Authors: Tags: Evidence-Based Review Source Type: research
(Natural News) A new study warned that women experience greater danger during surgical operations to repair the aorta than men. Female patients who undergo aortic surgery have higher risks of developing health complications, suffering strokes, and death. The largest blood vessel in the body, the aorta, delivers oxygenated blood from the heart to the farthest reaches of the body....
Source: NaturalNews.com - Category: Consumer Health News Source Type: news
Publication date: Available online 10 September 2019Source: Neuroscience LettersAuthor(s): Tapatee Das, Kalyani Soren, Mounica Yerasi, Arvind Kumar, Sumana ChakravartyAbstractFunctional recovery from hypoxia-ischemia depends on an individual’s response to the ischemic damage and recovery. Many of the neurological disorders, including cerebral stroke have sex-specific characteristics. Deciphering the differential molecular mechanisms of sex-specific recovery from hypoxic-ischemic insult can improve medical practice in the treatment of cerebral stroke. In the present study, we describe the establishment of a sex-specif...
Source: Neuroscience Letters - Category: Neuroscience Source Type: research
ConclusionsOutcomes are good following mitral valve repair. Although a substantial number of risk factors were found to be associated with adverse outcomes, only a small subset remained statistically significant following multivariate analysis. Identification of these risk factors may help guide clinical decision making with respect to which patients are the best candidates to undergo mitral valve repair.
Source: Annals of Medicine and Surgery - Category: General Medicine Source Type: research
Condition:   Stroke, Acute Intervention:   Device: OTR4132MD Sponsors:   Organ, Tissue, Regeneration, Repair and Replacement;   European Commission;   EURAXI Not yet recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
Source: The Journal of Thoracic and Cardiovascular Surgery - Category: Cardiovascular & Thoracic Surgery Authors: Source Type: research
We examined human lung tissue from COPD patients and normal control subjects, and found a substantial increase in p16-expressing alveolar cells in COPD patients. Using a transgenic mouse deficient for p16, we demonstrated that lungs of mice lacking p16 were structurally and functionally resistant to CS-induced emphysema due to activation of IGF1/Akt regenerative and protective signaling. Fat Tissue Surrounds Skeletal Muscle to Accelerate Atrophy in Aging and Obesity https://www.fightaging.org/archives/2019/09/fat-tissue-surrounds-skeletal-muscle-to-accelerate-atrophy-in-aging-and-obesity/ Researchers her...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
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