Methylene blue (Basic Blue 9) is a guanylyl cyclase (sGC), monoamine oxidase A (MAO-A) and NO synthase (NOS) inhibitor. Methylene blue is a vasopressor and is often used as a dye in several medical procedures. Methylene blue has antinociception, antimalarial, antidepressant and anxiolytic activity effects. Methylene Blue has the potential for methemoglobinemias, neurodegenerative disorders and ifosfamide-induced encephalopathytreatment^[1][2][3].

Guanylyl cyclase (sGC)^[1].
Monoamine oxidase A (MAO-A)^[1].
NO synthase (NOS)^[1]

By acting as an alternative electron acceptor/donor Methylene blue restores mitochondrial function, improves neuronal energy production and inhibits the formation of superoxide^[1].
Methylene blue inhibits cytochrome P450 (CYP) isozymes. Methylene blue is an odorless, water soluble, dark blue-green crystalline powder, which turns blue whenever mixed in solution. Methylene blue is a vasopressor that impacts the NO synthetic pathway by inhibiting inducible NOS and inhibiting the subsequent activation of sGC. In addition, by binding to the iron heme moiety of sGC and causing enzyme inhibition, Methylene blue blocks accumulation of cyclic GMP (cGMP), competing directly with NO in its ability to activate soluble guanylyl cyclase^[3].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Methylene Blue (1, 5, and 25 μg/rat) significantly decreases sevoflurane minimum alveolar anesthetic concentration (MAC) and brain cyclic guanosine monophosphate (cGMP) content in a dose-dependent manner in male Sprague-Dawley rats (7-week-old, 200-250 g)^[2].
Methylene blue is used as a dye in chromoendoscopy, and is sprayed onto the mucosa of the gastrointestinal tract in order to identify dysplasia, or pre-cancerous lesions^[2].
Methylene blue is able to restore vascular tone, normalize mean arterial pressures (MAP), and reduce vasopressor usage^[3].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

319.85

C₁₆H₁₈ClN₃S

61-73-4

亚甲蓝

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

H₂O : ≥ 50 mg/mL (156.32 mM)

* “≥” means soluble, but saturation unknown.

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

• [1]. Delport A, et al. Methylene blue and its analogues as antidepressant compounds. Metab Brain Dis. 2017 Oct;32(5):1357-1382.

  [2]. Masaki E, et al. Methylene blue, a soluble guanylyl cyclase inhibitor, reduces the sevoflurane minimum alveolar anesthetic concentration and decreases the brain cyclic guanosine monophosphate content in rats. Anesth Analg. 1999 Aug;89(2):484-9.

  [3]. McCartney SL, et al. Intraoperative vasoplegia: methylene blue to the rescue! Curr Opin Anaesthesiol. 2018 Feb;31(1):43-49.