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Cosyntropin (acetate) (Synonyms: ACTH (1-24), Adrenocorticotropic Hormone 1-24, Tetracosactide)

Catalog No.GC18804

Cosyntropin (acetate) is a synthetic peptide stimulating the release of corticosteroids such as cortisol from the adrenal gland. Cosyntropin (acetate) is currently used for the research of ulcerative colitis and Crohn's disease, juvenile/adult rheumatoid arthritis and osteoarthrosis.

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Cosyntropin (acetate) Chemical Structure

Cas No.: 60189-34-6

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Sample solution is provided at 25 µL, 10mM.

Description of Cosyntropin (acetate)

Cosyntropin (acetate) is a synthetic peptide stimulating the release of corticosteroids such as cortisol from the adrenal gland. Cosyntropin (acetate) is currently used for the research of ulcerative colitis and Crohn's disease, juvenile/adult rheumatoid arthritis and osteoarthrosis[1].

Under the stimulation of Cosyntropin (acetate) (10nM; 48h), PregS and Preg in adrenal cells showed an acute response (increased 21-fold and 12-fold respectively over the baseline within 3h) and reached a peak after 24h. In contrast, DHEAS and DHEA did not respond much to Cosyntropin (acetate) stimulation (increased 1.8-fold and 2.8-fold respectively over the baseline after 3h). After 48h of Cosyntropin (acetate) stimulation, PregS levels decreased slightly, Preg content decreased sharply, and DHEAS levels continued to increase slightly [2].

Cosyntropin (acetate) (0.2μg/kg/day; SC; 24d) stimulates vascular endothelial growth factor production in vivo and induces vascular endothelial growth factor secretion from osteoblasts via the pro-adrenocorticotropic hormone receptor, MC2R, which supports osteoblast maturation and survival in vitro[3]. Reduced microglia/macrophage accumulation and neutrophil infiltration in conjunction with moderate improvements in spatial learning in Cosyntropin (acetate) treated TBI mice[4].

References:
[1]Iuliano F, Iuliano E, Rossi M. Adding Slow Release Tetracosactide Acetate to Eltrombopag Improves Haematological Response in ITP Patients with Platelet-Count Fluctuation[J]. Blood, 2018, 132: 2449.
[2]. Rege J, Nanba A T, Auchus R J, et al. Adrenocorticotropin acutely regulates pregnenolone sulfate production by the human adrenal in vivo and in vitro[J]. The Journal of Clinical Endocrinology & Metabolism, 2018, 103(1): 320-327.
[3].Zaidi M, Sun L, Robinson L J, et al. ACTH protects against glucocorticoid-induced osteonecrosis of bone[J]. Proceedings of the National Academy of Sciences, 2010, 107(19): 8782-8787.
[4]. Siebold L, Krueger A C, Abdala J A, et al. Cosyntropin attenuates neuroinflammation in a mouse model of traumatic brain injury[J]. Frontiers in Molecular Neuroscience, 2020, 13: 109.

Protocol of Cosyntropin (acetate)

Cell experiment [1]:

Cell lines

Adrenal cells

Preparation Method

Adrenal cells were treated with 10nM Cosyntropin (acetate) for 48 hours.

Reaction Conditions

10nM; 48h

Applications

After Cosyntropin (acetate)-stimulated conditions, PregS and Preg demonstrated abrupt acute responses (21-and 12-fold increase at 3 hours compared with baseline, respectively) and peaked after 24 hours. In contrast, DHEAS and DHEA responded only modestly to Cosyntropin (acetate) stimulation (1.8- and 2.8-fold increase at 3 hours compared with baseline, respectively). By 48 hours after Cosyntropin (acetate) stimulation, a modest decline in PregS levels and a steep drop in Preg content, whereas the DHEAS level continued to rise slightly.

Animal experiment [2]:

Animal models

Glucocorticoid-induced osteonecrosis model

Preparation Method

We treated female rabbits averaging 4.48 kg with depot methylprednisolone acetate alone or Cosyntropin (acetate) 0.2μg/kg, daily, as an sc. injection. They were also administered 10 mg/kg tetracycline 5 days apart before sacrifice.

Dosage form

0.2μg/kg/day; SC; 24d

Applications

Cosyntropin (acetate) stimulates vascular endothelial growth factor production in vivo and induces vascular endothelial growth factor secretion from osteoblasts via the pro-adrenocorticotropic hormone receptor, MC2R, which supports osteoblast maturation and survival in vitro.

References:
[1]. Rege J, Nanba A T, Auchus R J, et al. Adrenocorticotropin acutely regulates pregnenolone sulfate production by the human adrenal in vivo and in vitro[J]. The Journal of Clinical Endocrinology & Metabolism, 2018, 103(1): 320-327.
[2]. Siebold L, Krueger A C, Abdala J A, et al. Cosyntropin attenuates neuroinflammation in a mouse model of traumatic brain injury[J]. Frontiers in Molecular Neuroscience, 2020, 13: 109.

Chemical Properties of Cosyntropin (acetate)

Cas No. 60189-34-6 SDF
Synonyms ACTH (1-24), Adrenocorticotropic Hormone 1-24, Tetracosactide
Chemical Name α1-24-corticotropin, acetate
Canonical SMILES N/A
Formula C136H210N40O31S.XC2H4O2 M.Wt 2993.5
Solubility PBS (pH 7.2): 10 mg/ml Storage Store at -20°C
General tips Please select the appropriate solvent to prepare the stock solution according to the solubility of the product in different solvents; once the solution is prepared, please store it in separate packages to avoid product failure caused by repeated freezing and thawing.Storage method and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored at -20°C, please use it within 1 month.
To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time.
Shipping Condition Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request.

Complete Stock Solution Preparation Table of Cosyntropin (acetate)

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1 mg 5 mg 10 mg
1 mM 0.3341 mL 1.6703 mL 3.3406 mL
5 mM 0.0668 mL 0.3341 mL 0.6681 mL
10 mM 0.0334 mL 0.167 mL 0.3341 mL
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