pig-8

AS-35 是一种可口服且具有选择性和高效性的 leukotrienes 拮抗剂，抑制 LTC4，LTD4 和 LTE4 诱导的回肠收缩。AS-35 具有抗过敏作用，抑制白三烯合成。

8 Hydroxy PIPAT oxalate 是一种选择性5-HT1A受体激动剂，主要功能是促进肠道肥大细胞释放组胺。该化合物能激活血清素信号通路，在豚鼠和人类肠道制剂中引起肥大细胞脱颗粒现象。此外，8 Hydroxy PIPAT oxalate 可增强组胺的自发释放，这一特性有助于调节胃肠功能，并可能对理解及抑制功能性胃肠道疾病如肠易激综合征等疾病具有研究和治疗的潜在价值。

TMB 8 is a non-competitive antagonist of nicotinic acetylcholine receptors (nAChRs) with IC50 values of 390 and 350 nM, respectively, for human muscle-type and α3β4 subunit-containing ganglionic nAChRs expressed in TE671 RD or SH-SY5Y cells. It inhibits nicotine-induced dopamine release from rat brain synaptosomes (IC50 = 480 nM). TMB 8 also reduces calcium availability in smooth and skeletal muscle, blocking the contractile response in isolated rabbit aortic strip when used at a concentration of 50 μM and inhibiting calcium influx and efflux in isolated guinea pig ileum when used at a concentration of 65 μM. It has been used in the study of intracellular calcium dynamics, particularly in smooth muscle. TMB 8 also inhibits protein kinase C (PKC) activity in a dose-dependent manner.

Betamethasone 21-phosphate is a synthetic glucocorticoid.1It prevents increases in macrophage and eosinophil numbers in bronchoalveolar lavage fluid (BALF) and decreases in blood leukocyte numbers in a guinea pig model of parainfluenza-3 viral infection when administered at a dose of 8 mg/kg but does not prevent airway hyperresponsiveness after infection.2Betamethasone 21-phosphate inhibits cell infiltration into the aqueous humor in a rat model of endotoxin-induced uveitis when administered topically or subcutaneously at doses of 0.01-1% or 1 mg/kg, respectively.3It increases maximal lung pressure volume curves in fetal sheep when administered to pregnant ewes at 0.75 gestation at doses of 80 and 170 μg/kg.1Betamethasone 21-phosphate increases body weight, impairs learning and memory, increases anxiolytic behavior, and reduces hippocampal neurogenesis in CD-1 mice but reduces body weight and increases neurogenesis with no effect on anxiety in high-anxiety DBA/2 mice when administered at a dose of approximately 25 mg/kg per day in the drinking water for seven weeks.4Formulations containing betamethasone 12-phosphate and betamethasone acetate have been used in the treatment of severe allergic conditions and a variety of immune-related conditions. 1.Loehle, M., Schwab, M., Kadner, S., et al.Dose-response effects of betamethasone on maturation of the fetal sheep lungAm. J. Obstet. Gynecol.202(2)186.e181-186.e187(2010) 2.Leusink-Muis, A., Ten Broeke, R., Folkerts, G., et al.Betamethasone prevents virus-induced airway inflammation but not airway hyperresponsiveness in guinea pigsClin. Exp. Allergy29(Suppl. 2)82-85(1999) 3.Tsuji, F., Sawa, K., Kato, M., et al.The effects of betamethasone derivatives on endotoxin-induced uveitis in ratExp. Eye Res.64(1)31-36(1997) 4.Aiello, R., Crupi, R., Leo, A., et al.Long-term betamethasone 21-phosphate disodium treatment has distinct effects in CD1 and DBA/2 mice on animal behavior accompanied by opposite effects on neurogenesisBehav. Brain Res.278155-166(2015)

8-O-Acetylharpagide 是从 Ajuga reptans 中分离得到的一种环烯醚萜，有抗肿瘤、抗病毒、抗菌和抗炎作用。它对豚鼠的离体平滑肌有生物活性。

Zofenoprilat是一种血管紧张素转换酶(ACE; IC50 = 8 nM for the rabbit lung enzyme)的抑制剂，同时也是前体药zofenopril的活性代谢产物。它能够抑制分离的豚鼠小肠中由血管紧张素I或缓激肽诱导的收缩(EC50s = 3 and 1 nM, respectively)。在人类脐静脉内皮细胞(HUVECs)中，Zofenoprilat (10 nM)降低基础内皮素-1分泌和一氧化氮(NO)生成，并阻止TNF-α诱导的活性氧种(ROS)增加以及谷胱甘肽(GSH)水平降低。Zofenoprilat (10 µM)保护初级人类心脏微血管内皮细胞免受多柔比星诱导的细胞毒性。此外，Zofenoprilat (10 µM)还能增加HUVECs中的硫化氢(H2S)生成，以及细胞的黏着、迁移和增殖。在以400 µM浓度使用时，它可以减少Langendorff分离的大鼠心脏灌流缺血再灌注损伤模型中的舒张末压和乳酸脱氢酶(LDH)释放。

Bassianolide, a cyclodepsipeptide insecticide produced by the fungal species B. bassiana and V. lecanii, demonstrates significant biological activity. Upon oral administration, it induces atony in B. mori silkworms at a concentration of 4 ppm and becomes lethal when concentrations exceed 8 ppm. Remarkably, atony in silkworm larvae can also be triggered by doses as low as 2 µg larva. Further studies reveal that bassianolide (0.01-1 µM) specifically targets muscarinic receptors to inhibit contractions in isolated guinea pig smooth muscle tissue, elicited by acetylcholine, without affecting nicotinic receptor-induced contractions.