Nadh Diaphorase Stain
Nadh Diaphorase Stain - Related Videos
12:07
NADH Fluorescence Imaging of Isolated Biventricular Working Rabbit Hearts
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Cited by 24 •
2012
The objective is to monitor the mitochondrial redox state of isolated hearts within the context of physiologic preload and afterload pressures. A biventricular working rabbit heart model is presented. High spatiotemporal resolution fluorescence imaging of NADH is used to monitor the mitochondrial redox state of epicardial tissue.
12:03
Detection of Microregional Hypoxia in Mouse Cerebral Cortex by Two-photon Imaging of Endogenous NADH Fluorescence
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Cited by 11 •
2012
Here we describe a method to directly visualize microregional tissue hypoxia in the mouse cortex in vivo. It is based on concurrent two-photon imaging of nicotinamide adenine dinucleotide (NADH) and the cortical microcirculation. This method is useful for high resolution analysis of tissue oxygen supply.
01:29
Role of Reduced Coenzymes NADH and FADH₂
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2025
The energy released from the breakdown of the chemical bonds within nutrients can be stored either through the reduction of electron carriers or in the bonds of adenosine triphosphate (ATP). In living systems, a small class of compounds functions as mobile electron carriers, molecules that bind to and shuttle high-energy electrons between compounds in pathways. The principal electron carriers that will be considered originate from the B vitamin group and are derivatives of nucleotides; they are...
11:33
Microscopy and Staining: Gram, Capsule, and Endospore Staining
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2023
Source: Rhiannon M. LeVeque1, Natalia Martin1, Andrew J. Van Alst1, and Victor J. DiRita1 1 Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, United States of America Bacteria are diverse microorganisms found nearly everywhere on Earth. Many properties help distinguish them from each other, including but not limited to Gram-staining type, shape and arrangement, production of capsule, and formation of spores. To observe these properties, one...
03:12
May-Grunwald Giemsa Staining: A Method to Stain Bone Marrow Cells
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2023
This video describes the technique of staining bone marrow cells using May- Grünwald Giemsa Staining. In the protocol, we will stain the murine myeloid leukemia cells, C149 cells, to analyze the morphology and differential counting.
FAQs
NADH-dependent dehydrogenases transfer electrons to a tetrazolium salt within the tissue section. This electron transfer converts the salt into an insoluble blue formazan precipitate that remains localized where the reaction occurs. Consequently, the stain converts enzymatic activity into a visible microscopic pattern, allowing investigators to assess both the intensity and distribution of oxidative activity.
Differences in formazan intensity and distribution reflect differences in oxidative enzyme activity among cellular regions. In skeletal muscle, these patterns help reveal fiber architecture and metabolic organization rather than simply showing whether tissue is present. Comparing the resulting appearance across fibers can therefore distinguish metabolic patterns and identify areas with relatively greater or lesser oxidative activity.
The location of the blue formazan is informative because oxidative activity may be organized within particular cellular regions. Examining its distribution provides clues about mitochondrial organization and how enzyme activity relates to fiber architecture. This spatial relationship makes the stain useful for connecting microscopic structural patterns with underlying differences in muscle metabolism.
The method begins with a tissue section containing the structures to be evaluated, particularly skeletal muscle. The section is exposed to the NADH-dependent dehydrogenase reaction system and a tetrazolium salt, allowing electron transfer to produce blue insoluble formazan. Microscopic examination then evaluates the precipitate's intensity and distribution across fibers and cellular regions.
NADH diaphorase stain provides a visual map of oxidative enzyme activity across skeletal muscle fibers. Differences in reaction intensity and organization help separate fibers with distinct metabolic patterns and clarify their architecture. This information complements microscopic structural assessment by showing how oxidative activity varies within and among fibers, rather than relying on morphology alone.
The method is relevant when investigators need to examine abnormalities in muscle metabolism alongside tissue structure. In medical studies of neuromuscular disorders, the stain can support evaluation of muscle fiber types, oxidative activity, and mitochondrial organization. Correlating these microscopic findings may help characterize how altered enzyme patterns are associated with abnormal muscle architecture.