Use of beta-nicotinamide mononucleotide or precursor thereof in preparation of medicines or health products for treating or alleviating respiratory disorders or diseases
A single nucleotide, breathing disorder technology, applied in the field of medicine
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Embodiment 1
[0075] Example 1 Study on the therapeutic effect of NMN and NR on chronic obstructive pulmonary disease
[0076] (1) Establishment of mouse model of chronic obstructive pulmonary disease
[0077] Animals: 6-8 weeks, C57 mice;
[0078] Reagent: porcine pancreatic elastase solution PPE (USA, Sigma), diluted in sterile PBS;
[0079] method:
[0080] 1) Anesthetize the mouse (adding isoflurane at a rate between 1.5-2 L / min), remove it from the box and place it in a supine position on a ramp, carefully open its mouth and attach the rubber band to the upper incisors , to lift the rubber band from the nail.
[0081] 2) Using a small pair of tweezers, gently grasp the mouse's tongue, pull it out from the mouth by 0.5-1 cm, and drop the elastase solution (50 μL) on the distal end of the oropharynx, that is, behind the tongue.
[0082] 3) Hold the tongue with one hand and block the two nostrils with the other hand for 5-6 seconds. With the extension of the tongue and the blockage of...
Embodiment 2
[0135] Example 2 β-nicotinamide mononucleotide NMN and β-nicotinamide ribose NR reduce the aging of lung macrophages caused by carbon particles, etc.
[0136] (1) Extraction of C57BL / 6 macrophages
[0137] To extract C57BL / 6 alveolar macrophages, cut the ribs of the mouse thorax so that the lungs can fully expand, then separate the trachea, cut a small opening along the cricoid cartilage, insert a flattened 20ml empty needle into the trachea, and suck 1ml of physiological Inject saline into the trachea, fix the needle with a needle holder, withdraw, repeat twice, centrifuge at 1000 rpm, process for 5 minutes, wash once with DMEM, transfer to a culture dish, add DMEM (containing calf serum), and wait for 2 hours to adhere to the wall , the original medium was discarded, and the resulting adherent cells were alveolar macrophages. For the extraction of C57BL / 6 peritoneal macrophages, inject 10ml of normal saline into the peritoneal cavity of the mouse, massage the two sides of t...
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