Results 41 to 50 of about 1,927 (199)

Quantitative Imaging of Human Hemoglobin Binding to Staphylococcus aureus With Single‐Molecule Resolution

open access: yesSmall, EarlyView.
Single‐molecule localization microscopy is exploited to quantify the number of hemoglobin copies bound to specific receptors on S. aureus wall. This quantification supports the design of a photoactive derivative of hemoglobin able to photo‐inactivate S.
Pietro Delcanale   +10 more
wiley   +1 more source

The relationship between the methods for the determination of erythrocyte protoporphyrins (EP) and zinc protoporphyrins (ZPP) [PDF]

open access: yes, 1982
U svrhu izbora najprikladnije metode za određivanje eritrocitnog protoporfirina (EP), vrlo važnog biokemijskog pokazatelja u ocjeni povećane apsorpcije olova, ispitan je odnos između spektrofluorometrijske metode Chisolm-Brown i spektrofotometrijske ...
D. Prpić-Majić   +5 more
core   +1 more source

Mechanism‐Guided Engineering of Upconversion Nanoparticles for Antibacterial Phototherapy: From Photonic Principles to Translational Nanosystems

open access: yesSmall, EarlyView.
This review provides a systematic overview of the field of antibacterial PhotoDynamic Therapy (aPDT) triggered by upconversion nanoparticles (UCNPs), focusing on the mechanisms and the key factors that define their efficacy for generating bactericidal species upon NIR‐light activation.
Zhe Li   +3 more
wiley   +1 more source

Zn protoporphyrin IX is formed not from heme but from protoporphyrin IX [PDF]

open access: yesMeat Science, 2007
We examined the effects of exogenous myoglobin, a bivalent chelator, and nitrite on Zn protoporphyrin IX (ZPP) formation by using model systems. ZPP was formed in a model solution without addition of exogenous myoglobin. After incubation, the amount of ZPP in a model solution was increased but that of heme was not decreased compared with the amounts ...
Wakamatsu, Jun-ichi   +4 more
openaire   +4 more sources

Graphitic Carbon Nitride‐Based Microrobots: Progress and Prospects in Environmental and Biomedical Applications

open access: yesSmall, EarlyView.
This Review summarizes recent progress in g‐C3N4‐based microrobots, including fabrication strategies for different morphologies and their main propulsion mechanisms. Their applications in environmental remediation and biomedicine, including water purification, antibacterial therapy, and drug delivery, are discussed.
Yunhuan Yuan, Martin Pumera
wiley   +1 more source

Formation of meso, N-diphenylprotoporphyrin IX by an aerobic reaction of phenylhydrazine with oxyhemoglobins. [PDF]

open access: yes, 2003
Administration of phenylhydrazine to rabbits resulted in the denaturation of hemoglobins in erythrocytes, causing the formation of intracellular precipitates known as Heinz bodies, severe hemolytic anemia, and reticulocytosis.
Nakanishi, Akira   +8 more
core   +1 more source

Multielectron Charge Storage Enables Cascade Electrochemiluminescence in an Atomically Precise Silver Nanocluster

open access: yesSmall, EarlyView.
An atomically precise Ag6 nanocluster stores multiple electrons through sequential reduction reactions and releases the stored charge through successive emissive oxidation reactions with a benzoyl peroxide‐derived radical. This multielectron charge storage pathway enables an electrochemiluminescence cascade, producing a substantially more efficient ...
Zhenzhong Cai   +3 more
wiley   +1 more source

Optimisation of the formation and distribution of protoporphyrin IX in the urothelium: An in vitro approach

open access: yes, 1999
PURPOSE: To optimize conditions for photodynamic detection (PDD) and photodynamic therapy (PDT) of bladder carcinoma, urothelial accumulation of protoporphyrin IX (PpIX) and conditions leading to cell photodestruction were studied. MATERIALS AND METHODS:
Sedmera, D.   +5 more
core   +1 more source

Stimuli‐responsive nanostructured hydrogen sulfide donors for enhanced cancer treatments

open access: yesSmart Molecules, EarlyView.
Three typical kinds of stimuli‐responsive nanostructured hydrogen sulfide (H2S) donors are reviewed. The nanostructures ensure precise delivery of H2S to the lesion site and regulate the release behavior. The H2S‐based gas therapy has been used to synergize with other cancer treatment modalities, achieving enhanced efficacy while reducing side effects.
Yuxuan Lyu   +7 more
wiley   +1 more source

Harnessing the nonthermal effects of ultrasound for cancer treatment: From mechanisms to applications

open access: yesSmart Molecules, EarlyView.
Nonthermal ultrasound transforms acoustic energy into diverse therapeutic bioeffects through cavitation, mechanical stimulation, and physicochemical activation. This review discusses how acoustic parameters, biological mechanisms, and responsive materials interact to influence nonthermal ultrasound‐enabled cancer therapies. Mechanism‐guided engineering
Liu Wang   +5 more
wiley   +1 more source

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