Pitake S, Ralph PC, DeBrecht J, Mishra SK (2018) Atopic dermatitis linked cytokine interleukin-31 induced itch mediated via a neuropeptide natriuretic polypeptide b. Acta Derm Venereol 98:795-796. doi: 10.2340/00015555-2977

Objective: To determine if NPPB is involved as a neuropeptide in IL-31-mediated itch in atopic dermatitis (AD) via natriuretic polypeptide receptor A (NPRA) in the spinal cord.

Summary: This study reveals an important role of neuropeptide NPPB in AD that could provide a therapeutic target for alleviating chronic itch associated with AD.

Usage: To further demonstrate the IL-31-mediated itch response by NPRA receptors expressed in the spinal cord, Nppb-SAP (5 μg) was used to eliminate neurons expressing NPRA receptors in the spinal cord.

Related Products: Nppb-SAP (Cat. #IT-69)

Huang J, Polgár E, Solinski HJ, Mishra SK, Tseng PY, Iwagaki N, Boyle KA, Dickie AC, Kriegbaum MC, Wildner H, Zeilhofer HU, Watanabe M, Riddell JS, Todd AJ, Hoon MA (2018) Circuit dissection of the role of somatostatin in itch and pain. Nat Neurosci 21(5):707-716. doi: 10.1038/s41593-018-0119-z

Objective: To determine the role of somatostatin in itch and pain.

Summary: Results define the neural circuit underlying somatostatin-induced itch and characterize a contrasting antinociceptive role for the peptide.

Usage: Ablation of Npr1- and GRPR-expressing spinal cord interneurons was accomplished by intrathecal (segment L3/4) injection of Nppb-SAP (4 μg/10 μL) and Bombesin-SAP (2.5 μg) respectively.

Related Products: Bombesin-SAP (Cat. #IT-40), Nppb-SAP (Cat. #IT-69)

Mishra SK, Hoon MA (2013) The cells and circuitry for itch responses in mice. Science 340(6135):968-971. doi: 10.1126/science.1233765

Summary: Although previous work implicated neurons expressing the GRP (gastrin-releasing peptide) receptor were in the pruritic, or itch pathway, transgenic mice lacking natriuretic polypeptide b (Nppb) were almost completely insensitive to itch. Using the custom conjugate Nppb-SAP (Cat. #IT-69), the authors eliminated itch in response to a wide range of pruritic substances in normal mice through the administration of 5 μg of conjugate into the intrathecal space. Even after this lesion, the scratching response to intrathecal GRP was not changed, indicating that the role of GRP is at a later stage than previously hypothesized.

Related Products: Nppb-SAP (Cat. #IT-69)