通过 C21 位点的酯裂解，母体分子环索奈德被水解为活性代谢物去异丁酰环索奈德 (des-CIC)，随后在肺细胞中可逆地产生脂肪酸酯。正常人支气管上皮 (NHBE) 细胞快速水解 cleisonide (5 μM)（4 小时转化率约为 30%），24 小时几乎完全转化 [1]。

Absorption, Distribution and Excretion
Ciclesonide and des-ciclesonide have negligible oral bioavailability (both less than 1%) due to low gastrointestinal absorption and high first-pass metabolism. The intranasal administration of ciclesonide at recommended doses results in negligible serum concentrations of ciclesonide.
152 L/hr [Following IV administration of 800 mcg of ciclesonide]

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Metabolism / Metabolites
Des-ciclesonide undergoes metabolism in the liver to additional metabolites mainly by the cytochrome P450 (CYP) 3A4 isozyme and to a lesser extent by CYP 2D6.

Effects During Pregnancy and Lactation
◉ Summary of Use during Lactation
Although not measured, the amounts of inhaled corticosteroids absorbed into the maternal bloodstream and excreted into breastmilk are probably too small to affect a breastfed infant. Expert opinion considers inhaled, nasal and oral corticosteroids acceptable to use during breastfeeding.
◉ Effects in Breastfed Infants
None reported with any corticosteroid.
◉ Effects on Lactation and Breastmilk
Relevant published information was not found as of the revision date.

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Protein Binding
The percentage of ciclesonide and des-ciclesonide bound to human plasma proteins averaged ≥ 99% each, with ≤ 1% of unbound drug detected in the systemic circulation.

[1]. The role of esterases in the metabolism of ciclesonide to desisobutyryl-ciclesonide in human tissue. Biochem Pharmacol, 2007. 73(10): p. 1657-64.

Ciclesonide is an organic molecular entity.
Ciclesonide is a glucocorticoid used to treat obstructive airway diseases. It is marketed under the brand name Alvesco.
Ciclesonide is a nonhalogenated, synthetic, inhaled corticosteroid (ICS) with anti-inflammatory and potential antiviral activities. Upon administration by oral inhalation into the lungs, ciclesonide (CIC) is converted by local esterases to its active metabolite desisobutyryl-ciclesonide (des-CIC), which binds to intracellular glucocorticoid receptors (GRs). The ligand-bound GRs regulate gene expressions, which lead to inhibitory activities against multiple cell types, such as mast cells, eosinophils, basophils, lymphocytes, macrophages and neutrophils, and various mediators associated with inflammation, such as histamine, eicosanoids, leukotrienes and cytokines. In addition, ciclesonide may suppress the replication of human coronavirus by targeting viral nonstructural protein 15 (NSP15).

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Drug Indication
For the treatment of nasal symptoms associated with seasonal and perennial allergic rhinitis in adults and adolescents 12 years of age and older.
For the alleviation of clinical signs of severe equine asthma (formerly known as Recurrent Airway Obstruction – (RAO), Summer Pasture Associated Recurrent Airway Obstruction – (SPA-RAO)).

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Mechanism of Action
Glucocorticoids such as ciclesonide can inhibit leukocyte infiltration at the site of inflammation, interfere with mediators of inflammatory response, and suppress humoral immune responses. The antiinflammatory actions of glucocorticoids are thought to involve phospholipase A2 inhibitory proteins, lipocortins, which control the biosynthesis of potent mediators of inflammation such as prostaglandins and leukotrienes. Ciclesonide reduces inflammatory reaction by limiting the capillary dilatation and permeability of the vascular structures. These compounds restrict the accumulation of polymorphonuclear leukocytes and macrophages and reduce the release of vasoactive kinins. Recent research suggests that corticosteroids may inhibit the release of arachidonic acid from phospholipids, thereby reducing the formation of prostaglandins. Ciclesonide is a glucocorticoid receptor agonist. On binding, the corticoreceptor-ligand complex translocates itself into the cell nucleus, where it binds to many glucocorticoid response elements (GRE) in the promoter region of the target genes. The DNA bound receptor then interacts with basic transcription factors, causing an increase or decrease in expression of specific target genes, including suppression of IL2 (interleukin 2) expression.

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Pharmacodynamics
Ciclesonide is a pro-drug that is enzymatically hydrolyzed to a pharmacologically active metabolite, C21-desisobutyryl-ciclesonide (des-ciclesonide or RM1) following intranasal application. Des-ciclesonide has anti-inflammatory activity with affinity for the glucocorticoid receptor that is 120 times higher than the parent compound. The precise mechanism through which ciclesonide affects allergic rhinitis symptoms is not known. Corticosteroids have been shown to have a wide range of effects on multiple cell types (e.g., mast cells, eosinophils, neutrophils, macrophages, and lymphocytes) and mediators (e.g., histamine, eicosanoids, leukotrienes, and cytokines) involved in allergic inflammation.

C32H44O7

540.6876

540.309

126544-47-6

Desisobutyryl-ciclesonide;161115-59-9;Ciclesonide (Standard);126544-47-6;Ciclesonide-d7;1225382-70-6

6918155

White to off-white solid powder

1.23 g/cm3

665ºC at 760 mmHg

202-209?C

210ºC

1.61E-20mmHg at 25°C

1.575

4.703

99.13

1

7

6

39

1100

9

O1[C@]([H])(C2([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C2([H])[H])O[C@]2([H])C([H])([H])[C@@]3([H])[C@]4([H])C([H])([H])C([H])([H])C5=C([H])C(C([H])=C([H])[C@]5(C([H])([H])[H])[C@@]4([H])[C@]([H])(C([H])([H])[C@]3(C([H])([H])[H])[C@]12C(C([H])([H])OC(C([H])(C([H])([H])[H])C([H])([H])[H])=O)=O)O[H])=O

LUKZNWIVRBCLON-GXOBDPJESA-N

InChI=1S/C32H44O7/c1-18(2)28(36)37-17-25(35)32-26(38-29(39-32)19-8-6-5-7-9-19)15-23-22-11-10-20-14-21(33)12-13-30(20,3)27(22)24(34)16-31(23,32)4/h12-14,18-19,22-24,26-27,29,34H,5-11,15-17H2,1-4H3/t22-,23-,24-,26+,27+,29+,30-,31-,32+/m0/s1

[2-[(1S,2S,4R,6R,8S,9S,11S,12S,13R)-6-cyclohexyl-11-hydroxy-9,13-dimethyl-16-oxo-5,7-dioxapentacyclo[10.8.0.02,9.04,8.013,18]icosa-14,17-dien-8-yl]-2-oxoethyl] 2-methylpropanoate

2934.99.9001

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

DMSO : ~50 mg/mL (~92.47 mM)

配方 1 中的溶解度: ≥ 2.5 mg/mL (4.62 mM) (饱和度未知) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
例如，若需制备1 mL的工作液，可将100 μL 25.0 mg/mL澄清DMSO储备液加入到400 μL PEG300中，混匀；然后向上述溶液中加入50 μL Tween-80，混匀；加入450 μL生理盐水定容至1 mL。
*生理盐水的制备：将 0.9 g 氯化钠溶解在 100 mL ddH₂O中，得到澄清溶液。

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配方 2 中的溶解度: ≥ 2.5 mg/mL (4.62 mM) (饱和度未知) in 10% DMSO + 90% Corn Oil (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
例如，若需制备1 mL的工作液，可将 100 μL 25.0 mg/mL 澄清 DMSO 储备液加入到 900 μL 玉米油中并混合均匀。

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请根据您的实验动物和给药方式选择适当的溶解配方/方案：
1、请先配制澄清的储备液(如：用DMSO配置50 或 100 mg/mL母液(储备液));
2、取适量母液，按从左到右的顺序依次添加助溶剂，澄清后再加入下一助溶剂。以 下列配方为例说明 (注意此配方只用于说明，并不一定代表此产品 的实际溶解配方):
10% DMSO → 40% PEG300 → 5% Tween-80 → 45% ddH2O (或 saline);
假设最终工作液的体积为 1 mL, 浓度为5 mg/mL: 取 100 μL 50 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀/澄清；向上述体系中加入50 μL Tween-80，混合均匀/澄清；然后继续加入450 μL ddH2O (或 saline)定容至 1 mL；
3、溶剂前显示的百分比是指该溶剂在最终溶液/工作液中的体积所占比例;
4、 如产品在配制过程中出现沉淀/析出，可通过加热(≤50℃)或超声的方式助溶;
5、为保证最佳实验结果，工作液请现配现用！
6、如不确定怎么将母液配置成体内动物实验的工作液，请查看说明书或联系我们;
7、 以上所有助溶剂都可在 Invivochem.cn网站购买。