The Bright and Dark Sides of Reactive Oxygen Species Generated by Copper–Peptide Complexes DOI Creative Commons
Urszula K. Komarnicka, Monika K. Lesiów, Maciej Witwicki

и другие.

Separations, Год журнала: 2022, Номер 9(3), С. 73 - 73

Опубликована: Март 11, 2022

Copper ions bind to biomolecules (e.g., peptides and proteins) playing an essential role in many biological physiological pathways the human body. The resulting complexes may contribute initiation of neurodegenerative diseases, cancer, bacterial viral or act as therapeutics. Some compounds can chemically damage macromolecules initiate development pathogenic states. Conversely, a number these have antibacterial, antiviral, even anticancer properties. One most significant current discussions Cu biochemistry relates mechanisms positive negative actions based on generation reactive oxygen species, including radicals that interact with DNA molecules. This review aims analyze various peptide–copper mechanism their action.

Язык: Английский

The effects of acute Methylene Blue administration on cerebral blood flow and metabolism in humans and rats DOI Creative Commons
Nisha Singh, Eilidh MacNicol, Ottavia Dipasquale

и другие.

Journal of Cerebral Blood Flow & Metabolism, Год журнала: 2023, Номер 43(2_suppl), С. 95 - 105

Опубликована: Фев. 21, 2023

Methylene Blue (MB) is a brain-penetrating drug with putative neuroprotective, antioxidant and metabolic enhancing effects. In vitro studies suggest that MB enhances mitochondrial complexes activity. However, no study has directly assessed the effects of in human brain. We used vivo neuroimaging to measure effect on cerebral blood flow (CBF) brain metabolism humans rats. Two doses (0.5 1 mg/kg humans; 2 4 rats; iv) induced reductions global (F(1.74, 12.17)5.82, p = 0.02) rats (F(1,5)26.04, 0.0038). Human rate oxygen (CMRO2) was also significantly reduced (F(1.26, 8.84)8.01, 0.016), as rat glucose (CMRglu) (t 2.6(16) 0.018). This contrary our hypothesis will increase CBF energy metrics. Nevertheless, results were reproducible across species dose dependent. One possible explanation concentrations used, although clinically relevant, reflect MB's hormetic effects, i.e., higher produce inhibitory rather than augmentation metabolism. Additionally, here we healthy volunteers normal where ability enhance might be limited.

Язык: Английский

Процитировано

6

Harnessing Passive Pulsatile Shear Stress for Alzheimer’s Disease Prevention and Intervention DOI Creative Commons
José A. Adams, Arkady Uryash, José R. López

и другие.

Journal of Alzheimer s Disease, Год журнала: 2024, Номер 98(2), С. 387 - 401

Опубликована: Фев. 23, 2024

Alzheimer's disease (AD) affects more than 40 million people worldwide and is the leading cause of dementia. This a challenge for both patients caregivers puts significant strain on global healthcare system. To address this issue, Lancet Commission recommends focusing reducing modifiable lifestyle risk factors such as hypertension, diabetes, physical inactivity. Passive pulsatile shear stress (PPSS) interventions, which use devices like whole-body periodic acceleration, acceleration along Z-axis (pGz), Jogging Device, have shown systemic cellular effects in preclinical clinical models these risks factors. Based this, we propose that PPSS could be potential non-pharmacological non-invasive preventive or therapeutic strategy AD. We perform comprehensive review biological basis based all publications using demonstrate their various aspects draw from analysis to support our hypothesis. then delve into possible application an innovative intervention. discuss how holds promise ameliorating hypertension diabetes while mitigating inactivity, potentially offering holistic approach AD prevention management.

Язык: Английский

Процитировано

2

Advances and Challenges of Bioassembly Strategies in Neurovascular In Vitro Modeling: An Overview of Current Technologies with a Focus on Three-Dimensional Bioprinting DOI Open Access

Salvatore Mancuso,

Aditya Bhalerao, Luca Cucullo

и другие.

International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(20), С. 11000 - 11000

Опубликована: Окт. 12, 2024

Bioassembly encompasses various techniques such as bioprinting, microfluidics, organoids, and self-assembly, enabling advances in tissue engineering regenerative medicine. Advancements bioassembly technologies have enabled the precise arrangement integration of cell types to more closely mimic complexity functionality neurovascular unit (NVU) that other biodiverse multicellular structures. In this context, bioprinting offers ability deposit cells a spatially controlled manner, facilitating construction interconnected networks. Scaffold-based assembly strategies provide structural support guidance cues for growth, formation complex bio-constructs. Self-assembly approaches utilize inherent properties drive spontaneous organization interaction neuronal vascular components. However, recreating intricate microarchitecture functional characteristics tissue/organ poses additional challenges. materials hold great promise addressing these The further refinement technologies, improved resolution incorporation multiple types, can enhance accuracy biological constructs; however, developing bioinks growth cells, viability, while maintaining compatibility with process remains an unmet need field, advancements design bioactive biodegradable scaffolds will aid controlling adhesion, differentiation, vascularization within engineered tissue. Additionally, integrating advanced imaging analytical real-time monitoring characterization bioassembly, aiding quality control optimization. While challenges remain, ongoing research technological propel field forward, paving way transformative developments engineering. This work provides overview advancements, challenges, future perspectives fabricating constructs add-on focus on technologies.

Язык: Английский

Процитировано

2

The role of the neurovascular unit in vascular cognitive impairment: Current evidence and future perspectives DOI Creative Commons
Zhidong He, Jing Sun

Neurobiology of Disease, Год журнала: 2024, Номер unknown, С. 106772 - 106772

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

2

The Bright and Dark Sides of Reactive Oxygen Species Generated by Copper–Peptide Complexes DOI Creative Commons
Urszula K. Komarnicka, Monika K. Lesiów, Maciej Witwicki

и другие.

Separations, Год журнала: 2022, Номер 9(3), С. 73 - 73

Опубликована: Март 11, 2022

Copper ions bind to biomolecules (e.g., peptides and proteins) playing an essential role in many biological physiological pathways the human body. The resulting complexes may contribute initiation of neurodegenerative diseases, cancer, bacterial viral or act as therapeutics. Some compounds can chemically damage macromolecules initiate development pathogenic states. Conversely, a number these have antibacterial, antiviral, even anticancer properties. One most significant current discussions Cu biochemistry relates mechanisms positive negative actions based on generation reactive oxygen species, including radicals that interact with DNA molecules. This review aims analyze various peptide–copper mechanism their action.

Язык: Английский

Процитировано

9