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Contribution of microglial reaction to increased nociceptive responses in high-fat-diet (HFD)-induced obesity in male mice.
Liang YJ, Feng SY, Qi YP, Li K, Jin ZR, Jing HB, Liu LY, Cai J, Xing GG, Fu KY. (2019) Contribution of microglial reaction to increased nociceptive responses in high-fat-diet (HFD)-induced obesity in male mice. Brain Behav Immun 80:777-792. doi: 10.1016/j.bbi.2019.05.026
Related Products: Mac-1-SAP mouse/human (Cat. #IT-06)
S38. Dissecting the functional heterogeneity of serotonergic systems that regulate fear and panic.
Bernabe C, Caliman I, de Abreu A, Dustrude E, Molosh A, Shekhar A, Johnson P (2019) S38. Dissecting the functional heterogeneity of serotonergic systems that regulate fear and panic. Biol Psychiatry 85(10):S311. doi: 10.1016/j.biopsych.2019.03.789
Objective: To elucidate the role of these serotonergic networks on learned fear and innate panic responses.
Summary: LED excitation or lesioning of PeF projecting 5-HT system respectively attenuated and enhanced panic-associated escape/flight behaviors and cardioexcitation following a 7.5 and 20% CO2 challenge.
Usage: Anti-SERT-SAP was injected into the BLA or PeF to lesion these 5-HT pathways.
Related Products: Anti-SERT-SAP (Cat. #IT-23)
Inhibition of STAT3 activation mediated by toll-like receptor 4 attenuates angiotensin II-induced renal fibrosis and dysfunction
Xu Z, Zou C, Yu W, Xu S, Huang L, Khan Z, Wang J, Liang G, Wang Y (2019) Inhibition of STAT3 activation mediated by toll-like receptor 4 attenuates angiotensin II-induced renal fibrosis and dysfunction. Br J Pharmacol 176(14):2627-2641. doi: 10.1111/bph.14686 PMID: 30958891
Objective: To investigate the underlying mechanisms of STAT3 activation by angiotensin II and downstream functional consequences in the kidneys.
Summary: This study reveals a novel mechanism of STAT3 activation, induced by angiotensin II, in kidney tissues and highlights a translational significance of a STAT3 inhibitor as potential therapeutic agent for hypertensive kidney disease.
Usage: Western blot
Related Products: Angiotensin II receptor (AT-1R) Rabbit Polyclonal, affinity-purified (Cat. #AB-N27AP)
Facilitation of neuropathic pain by the NPY Y1 receptor-expressing subpopulation of excitatory interneurons in the dorsal horn.
Nelson TS, Fu W, Donahue RR, Corder GF, Hökfelt T, Wiley RG, Taylor BK (2019) Facilitation of neuropathic pain by the NPY Y1 receptor-expressing subpopulation of excitatory interneurons in the dorsal horn. Sci Rep 9(1):7248. doi: 10.1038/s41598-019-43493-z PMID: 31076578
Objective: To test the relevance of the NPYY1 spinal population to the development and/or maintenance of acute and neuropathic pain.
Summary: This neuroanatomical and behavioral characterization of Y1R-expressing excitatory interneurons provides compelling evidence for the development of spinally-directed Y1R agonists to reduce chronic neuropathic pain.
Usage: Selectively ablated Y1R-expressing interneurons while sparing the central terminals of primary afferents. Rats received intrathecal injections of either NPY-SAP or control Blank-SAP (1000 ng each).
Related Products: NPY-SAP (Cat. #IT-28), Blank-SAP (Cat. #IT-21)
Chemical strategies for antigen-selective targeting of autoreactive B Cells. Chapter 2: Sequential prodrug strategy to target and eliminate ACPA-selective autoreactive B cells.
Lelieveldt L (2019) Chemical strategies for antigen-selective targeting of autoreactive B Cells. Chapter 2: Sequential prodrug strategy to target and eliminate ACPA-selective autoreactive B cells. Radboud Universiteit Nijmegen Nijmegen, Netherlands 45-64. Thesis.
Objective: To develop a method to target and selectively eliminate autoreactive B cells that produce anti-citrullinated proteins antibodies (ACPA) using a sequential antigen prodrug targeting strategy, as a treatment for Rheumatoid Arthritis (RA).
Summary: The study used a synthesized cyclic citrullinated peptide (CCP) antigen suitable for BCR binding and demonstrated that binding by ACPA was impaired upon introduction of a carboxy-pnitrobenzyl (CNBz) caging group at the side chain of the citrulline residue. Enzymatic reduction of the CNBz moiety by nitroreductase fully restored citrulline-selective recognition by both ACPA and ACPA-expressing B cells and showed targeted cell death of CCP-recognizing B cells only. These results mark an important step towards antigen-selective B cell targeting in general and more specifically in RA.
Usage: Streptavidin-ZAP mixed with biotinylated CCP peptides was tested in cytotoxicity assays. The exposure of cells to CCP-SA-ZAP at 1 nM as well as the activated CCP(CNBz) induced death of up to 60% of ACPA-expressing B cells.
Related Products: Streptavidin-ZAP (Cat. #IT-27)
Targeted hippocampal GABA neuron ablation by stable substance P-saporin causes hippocampal sclerosis and chronic epilepsy in rats.
Chun E, Bumanglag AV, Burke SN, Sloviter RS (2019) Targeted hippocampal GABA neuron ablation by stable substance P-saporin causes hippocampal sclerosis and chronic epilepsy in rats. Epilepsia 60(5):e52-e57. doi: 10.1111/epi.14723
Objective: Hippocampal GABA neurons were targeted for selective elimination to determine whether a focal hippocampal GABAergic defect in an otherwise normal brain can initiate cryptogenic temporal lobe epilepsy with hippocampal sclerosis.
Summary: Hippocampal GABAergic dysfunction is epileptogenic and can produce the defining features of cryptogenic temporal lobe epilepsy.
Usage: Intrahippocampal injections of SSP-SAP (0.4 ng/10 nL) were performed using a 0.5-μL Neuros Syringe lowered into four hippocampal sites along both the transverse and longitudinal hippocampal axes bilaterally.
Related Products: SSP-SAP (Cat. #IT-11)
Spinal somatostatin-positive interneurons transmit chemical itch.
Fatima M, Ren X, Pan H, Slade HFE, Asmar AJ, Xiong CM, Shi A, Xiong AE, Wang L, Duan B (2019) Spinal somatostatin-positive interneurons transmit chemical itch. Pain 160(5):1166-1174. doi: 10.1097/j.pain.0000000000001499
Objective: To further study the cellular identity of spinal interneurons that contribute to itch processing.
Summary: Findings reveal a novel spinal mechanism for sensory encoding of itch perception.
Usage: Npra receptor–expressing spinal cord interneurons were ablated through intrathecal injection of Nppb-SAP (5 μg/10 μL) or control Blank-SAP in lumbar segment 3 to 4. Behavioral analyses were performed 1 week after the toxin injection.
Related Products: Nppb-SAP (Cat. #IT-69), Blank-SAP (Cat. #IT-21)
Viability of mouse retinal explant cultures assessed by preservation of functionality and morphology
Alarautalahti V, Ragauskas S, Hakkarainen JJ, Uusitalo-Järvinen H, Uusitalo H, Hyttinen J, Kalesnykas G, Nymark S (2019) Viability of mouse retinal explant cultures assessed by preservation of functionality and morphology. Invest Ophthalmol Vis Sci 60(6):1914-1927. doi: 10.1167/iovs.18-25156 PMID: 31042799
Summary: Organotypic retinal explant cultures have been used to study retinal development, retinal diseases and injuries, drug screening, and retinal stem cell therapies.
Usage: The amount of ganglion cells and melanopsin-expressing intrinsically photosensitive RGCs (ipRGCs) were detected by staining of RNA-binding protein. Melanopsin detection by immunostaining. 1:2500
Related Products: Melanopsin Rabbit Polyclonal (Cat. #AB-N38)
Cell-specific ablation of GnRH neurons using kisspeptin-saporin in the preoptic area of sheep, but not mice.
Porter D, Moore A, Goodman R, Hileman S, Coolen L, Lehman M (2019) Cell-specific ablation of GnRH neurons using kisspeptin-saporin in the preoptic area of sheep, but not mice. J Endocrine Society 3(1):SAT–421. ENDO 2019 – 101st Annual Meeting of the Endocrine Society, New Orleans, Louisiana doi: 10.1210/js.2019-SAT-421
Objective: To invesigate the potential of integrin α10β1 as a therapeutic target in glioblastomas (GBMs).
Summary: Integrin α10β1 has a crucial role in the migration, proliferation, and survival of GBM cells and that an integrin α10β1 antibody–drug conjugate induced cell death of GBM cells both in vitro and in vivo.
Usage: Infusions of anti-10-SAP or Anti-ctrl-SAP were made icv (1 µg/2 L per infusion).
Related Products: Custom Conjugates
Losartan, an angiotensin II type 1 receptor antagonist, alleviates mechanical hyperalgesia in a rat model of chemotherapy-induced neuropathic pain by inhibiting inflammatory cytokines in the dorsal root ganglia.
Kim E, Hwang S-H, Kim H-K, Abdi S, Kim HK (2019) Losartan, an angiotensin II type 1 receptor antagonist, alleviates mechanical hyperalgesia in a rat model of chemotherapy-induced neuropathic pain by inhibiting inflammatory cytokines in the dorsal root ganglia. Mol Neurobiol 56(11):7408-7419. doi: 10.1007/s12035-019-1616-0 PMID: 31037647
Objective: To assess losartan’s analgesic effect on paclitaxel-induced neuropathic pain (PINP) in rats and its mechanism of action in dorsal root ganglion (DRG).
Summary: The mechanical thresholds, protein levels of inflammatory cytokines, and cellular location of AT1R and interleukin 1β (IL-1β) in the DRG were assessed with behavioral testing, Western blotting, and immunohistochemistry, respectively.
Usage: western blot (1:100)
Related Products: Angiotensin II receptor (AT-1R) Rabbit Polyclonal, affinity-purified (Cat. #AB-N27AP)