Varenicline（1 μM，24 小时）可抑制 RAW 264.7 巨噬细胞的细胞增殖率以及 LPS 诱导的细胞因子分泌（IL-1β、IL-6 和 TNF α）[1]。来自男性和女性器官捐献者的人肾上腺嗜铬细胞在暴露于 250 nM vannicline 时在没有 ACh 激活的情况下表现出动作电位 (Aps) [3]。通过抑制 VE-钙粘蛋白表达，vannicline（100 μM，4 小时）可增加 HUVEC 迁移 [4]。

在尼古丁诱导的条件性位置偏好 (CPP) 抑制开始前 10 分钟，以 0.5 mg/kg 的剂量皮下注射伐尼克兰（0.01-1 mg/kg 皮下注射，3 天）[5]。万尼克林（皮下注射，2.5 mg/kg，3 天）引起的地方厌恶依赖于 α5 nAChR，而不依赖于 β2 nAChR [5]。皮下注射万尼克林（0.1 和 0.5 mg/kg，3 天）以剂量相关的方式恢复与尼古丁戒断相关的躯体症状和痛觉过敏，以及戒断引起的厌恶感 [5]。

细胞增殖测定 [1]
细胞类型： RAW 264.7 小鼠巨噬细胞（用 4 μg/mL LPS 处理 24 小时）
测试浓度： 1 μM
孵育时间：0-48小时
实验结果：LPS诱导的细胞增殖率减弱。

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蛋白质印迹分析[4]
细胞类型： HUVEC
测试浓度： 1、10、100 μM
孵育持续时间：24 小时或 30 分钟
实验结果：VE-钙粘蛋白表达减少，ERK1/2、p38 和 JNK 信号传导激活。

Animal/Disease Models: ICR male mice [5]
Doses: 0.01-1 mg/kg, 3 days
Route of Administration: subcutaneous injection
Experimental Results: Inhibited nicotine conditioned place preference (CPP) in a dose-dependent manner.

Toxicity Summary
IDENTIFICATION AND USE: Varenicline is used as an adjunct in the cessation of cigarette smoking. HUMAN EXPOSURE AND TOXICITY: Safety and efficacy of varenicline as an adjunct for smoking cessation have been established in 6 placebo-controlled or active-comparator studies in 3659 patients (mean age: 43 years; 79-96% white; mean smoking history: about 25 years) who smoked at least 10 cigarettes daily (mean: about 21 cigarettes daily). Safety and efficacy of varenicline also have been evaluated in a randomized, double-blind, placebo-controlled study in 703 patients with stable, documented cardiovascular disease (other than hypertension) who smoked at least 10 cigarettes daily; patients receiving varenicline and placebo were comparable in baseline characteristics, including age (mean age 57 and 55.9 years, respectively), race (80.3 and 80.8% white, respectively), gender (75.2 and 82.2% male, respectively), and mean smoking history (40 and 39 years, and 22.1 and 22.9 cigarettes daily, respectively). Safety and efficacy of varenicline also have been evaluated in a randomized, double-blind, placebo-controlled study in 460 patients (mean age 57 years, 82-84% white, approximately 62% male, mean smoking history of approximately 40 years) with mild to moderate chronic obstructive pulmonary disease (postbronchodilator FEV1/FVC below 70% and FEV1 at least 50% of predicted normal value) who smoked at least 10 cigarettes daily. Serious neuropsychiatric symptoms, including changes in mood (e.g., depression, mania), psychosis, hallucinations, paranoia, delusions, homicidal ideation, hostility, agitation, aggression, anxiety, panic, and suicidality (e.g., suicidal ideation, attempted and completed suicides), have been reported during postmarketing experience in patients receiving varenicline. Hypersensitivity reactions, including angioedema, have been reported during postmarketing experience in patients receiving varenicline. Safety and efficacy of varenicline have not been established in patients younger than 18 years of age and use of the drug in this age group is not recommended. Varenicline was not genotoxic, with or without metabolic activation in vitro in human lymphocytes. ANIMAL STUDIES: Varenicline is distributed into milk in animals. Rats were administered varenicline (1, 5, and 15 mg/kg/day) by oral gavage for 2 years. In male rats (n = 65 per sex per dose group), incidences of hibernoma (tumor of the brown fat) were increased at the mid dose (1 tumor, 5 mg/kg/day, 23 times the maximum recommended human daily exposure based on AUC) and maximum dose (2 tumors, 15 mg/kg/day, 67 times the maximum recommended human daily exposure based on AUC). There was no evidence of carcinogenicity in female rats. Varenicline succinate has been shown to have an adverse effect on the fetus in animal reproduction studies. Administration of varenicline succinate to pregnant rabbits resulted in reduced fetal weights at an oral dose of 30 mg/kg/day (50 times the human AUC); this reduction was not evident following treatment with 10 mg/kg/day (23 times the maximum recommended daily human exposure based on AUC). In addition, in the offspring of pregnant rats treated with varenicline succinate there were decreases in fertility and increases in auditory startle response at an oral dose of 15 mg/kg/day (36 times the maximum recommended human daily exposure based on AUC). Varenicline succinate was not teratogenic in rats and rabbits at oral doses up to 15 and 30 mg/kg/day, respectively (36 and 50 times the maximum recommended human daily exposure based on AUC, respectively). Varenicline was not genotoxic, with or without metabolic activation, in the following assays: Ames bacterial mutation assay; mammalian CHO/HGPRT assay; and tests for cytogenetic aberrations in vivo in rat bone marrow.

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Effects During Pregnancy and Lactation
◉ Summary of Use during Lactation
Varenicline is a partial nicotine agonist used orally to assist smoking cessation and by nasal spray for dry eyes. One researcher points out that based on animal data on nicotine, varenicline might interfere with normal infant lung development and recommends against its use in nursing mothers. Because no information is available on the use of varenicline during breastfeeding, an alternate drug is preferred, especially while nursing a newborn or preterm infant. However, maternal drug exposure after the nasal spray is only about 7.5% that of the oral drug, so the spray is much less likely to affect the infant. If a mother chooses to breastfeed while taking varenicline, she should monitor her infant for seizures and excessive vomiting.
◉ Effects in Breastfed Infants
Relevant published information was not found as of the revision date.
◉ Effects on Lactation and Breastmilk
Relevant published information was not found as of the revision date.

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Interactions
Pharmacokinetic interactions unlikely with drugs metabolized by or affecting cytochrome P-450 (CYP) isoenzymes. In vitro studies indicate that varenicline does not inhibit CYP isoenzymes 1A2, 2A6, 2B6, 2C8, 2C9, 2C19, 2D6, 2E1, or 3A4/5 in vitro. The drug also does not induce CYP isoenzymes 1A2 or 3A4.
Physiologic changes resulting from smoking cessation (with or without varenicline) may alter the pharmacokinetics or pharmacodynamics of some drugs (e.g., theophylline, warfarin, insulin); dosage adjustment may be required. The manufacturer states that clinical experience in patients receiving varenicline with other drugs has not revealed evidence of clinically important interactions.
Pharmacokinetic interaction unlikely. Increased incidence of adverse effects (nausea, headache, vomiting, dizziness, dyspepsia, fatigue) and increased rate of discontinuance of combination (varenicline and transdermal nicotine replacement) therapy compared with those receiving transdermal nicotine and placebo. Safety and efficacy of varenicline in combination with other smoking cessation therapies have not been studied.
Pharmacokinetic interaction unlikely. Warfarin pharmacokinetics may be affected by smoking cessation.
For more Interactions (Complete) data for VARENICLINE (7 total), please visit the HSDB record page.

[1]. Efficacy of varenicline combined with nicotine replacement therapy vs varenicline alone for smoking cessation: a randomized clinical trial. JAMA. 2014 Jul;312(2):155-61.

[2]. Ultrapotent chemogenetics for research and potential clinical applications. Science. 2019;364(6436):eaav5282.

[3]. Varenicline promotes endothelial cell migration by lowering vascular endothelial-cadherin levels via the activated α7 nicotinic acetylcholine receptor-mitogen activated protein kinase axis. Toxicology. 2017;390:1-9.

[4]. Countering Opioid-induced Respiratory Depression in Male Rats with Nicotinic Acetylcholine Receptor Partial Agonists Varenicline and ABT 594. Anesthesiology. 2020 May;132(5):1197-1211.

[5]. Effects of chronic varenicline treatment on nicotine, cocaine, and concurrent nicotine+cocaine self-administration. Neuropsychopharmacology. 2014 Apr;39(5):1222-31.

[6]. Varenicline has antidepressant-like activity in the forced swim test and augments sertraline's effect. Eur J Pharmacol. 2009 Mar 1;605(1-3):114-6.

Varenicline is a partial agonist of the nicotinic acetylcholine receptor (nAChR) subtype alpha4beta2. Nicotine stimulation of central alpha4beta2 nAChRs located at presynaptic terminals in the nucleus accumbens causes the release of the neurotransmitter dopamine, which may be associated with the experience of pleasure; nicotine addiction constitutes a physiologic dependence related to this dopaminergic reward system. As an AChR partial agonist, varenicline attenuates the craving and withdrawal symptoms that occur with abstinence from nicotine but is not habit-forming itself.
A benzazepine derivative that functions as an ALPHA4-BETA2 NICOTINIC RECEPTOR partial agonist. It is used for SMOKING CESSATION.
See also: Varenicline (annotation moved to).

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Therapeutic Uses
Nicotinic Agonists
Varenicline is used as an adjunct in the cessation of cigarette smoking.
In this randomized, double-blind, multicenter trial, eligible adult smokers (18-75 years) who smoked an average of > or =10 cigarettes/day were randomized to either varenicline 1 mg twice daily (BID) or placebo for 52 weeks. Subjects made weekly clinic visits until week 8, and then every 4 weeks until week 52, with a follow-up visit at week 53. The target quit date was the morning of the week 1 clinic visit. Brief counseling was provided at each visit, and vital signs, adverse events, and smoking status were documented. Other laboratory measures were collected at specified visits. A total of 251 subjects were randomized to varenicline and 126 to placebo. Approximately half of the subjects in each arm completed the study (53.8% varenicline; 46.8% placebo). Treatment-emergent adverse events were observed in 96.4% of varenicline- and 82.5% of placebo-treated subjects during the study. Common varenicline-associated adverse events were nausea (40.2%), abnormal dreams (22.7%), and insomnia (19.1%). Most adverse events were considered mild or moderate in intensity. Adverse events leading to discontinuation of varenicline treatment included nausea (7.6%), insomnia (3.2%), and abnormal dreams (2.4%). A single varenicline-related serious AE, bilateral subcapsular cataracts, was observed. At week 52, 7-day point prevalence abstinence rates were 36.7% (varenicline) and 7.9% (placebo). Varenicline 1 mg BID can be safely administered for up to 1 year. Varenicline was also a more effective smoking cessation aid than placebo throughout the study, supporting both its short- (12-week) and long-term (52-week) efficacy.

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Drug Warnings
/BOXED WARNING/ WARNING: SERIOUS NEUROPSYCHIATRIC EVENTS. Serious neuropsychiatric events including, but not limited to, depression, suicidal ideation, suicide attempt, and completed suicide have been reported in patients taking CHANTIX. Some reported cases may have been complicated by the symptoms of nicotine withdrawal in patients who stopped smoking. Depressed mood may be a symptom of nicotine withdrawal. Depression, rarely including suicidal ideation, has been reported in smokers undergoing a smoking cessation attempt without medication. However, some of these symptoms have occurred in patients taking CHANTIX who continued to smoke. All patients being treated with CHANTIX should be observed for neuropsychiatric symptoms including changes in behavior, hostility, agitation, depressed mood, and suicide-related events, including ideation, behavior, and attempted suicide. These symptoms, as well as worsening of pre-existing psychiatric illness and completed suicide, have been reported in some patients attempting to quit smoking while taking CHANTIX in the postmarketing experience. When symptoms were reported, most were during CHANTIX treatment, but some were following discontinuation of CHANTIX therapy. These events have occurred in patients with and without pre-existing psychiatric disease. Patients with serious psychiatric illness such as schizophrenia, bipolar disorder, and major depressive disorder did not participate in the premarketing studies of CHANTIX. Advise patients and caregivers that the patient should stop taking CHANTIX and contact a healthcare provider immediately if agitation, hostility, depressed mood, or changes in behavior or thinking that are not typical for the patient are observed, or if the patient develops suicidal ideation or suicidal behavior. In many postmarketing cases, resolution of symptoms after discontinuation of CHANTIX was reported, although in some cases the symptoms persisted; therefore, ongoing monitoring and supportive care should be provided until symptoms resolve. The risks of CHANTIX should be weighed against the benefits of its use. CHANTIX has been demonstrated to increase the likelihood of abstinence from smoking for as long as one year compared to treatment with placebo. The health benefits of quitting smoking are immediate and substantial.
The U.S. Food and Drug Administration (FDA) is warning that the prescription smoking cessation medicine Chantix (varenicline) can change the way people react to alcohol. In addition, rare accounts of seizures in patients treated with Chantix have been reported. We have approved changes to the Chantix label to warn about these risks. Until patients know how Chantix affects their ability to tolerate alcohol, they should decrease the amount of alcohol they drink. Patients who have a seizure while taking Chantix should stop the medicine and seek medical attention immediately. Millions of Americans have serious health problems caused by smoking, which can be reduced by quitting. Chantix is a prescription medicine that is FDA-approved to help adults quit smoking. In clinical trials, Chantix increased the likelihood of quitting smoking and "staying quit" for as long as 1 year compared to treatment with a placebo, an inactive treatment. We reviewed the case series submitted by Pfizer, the manufacturer of Chantix, as well as the cases in the FDA Adverse Event Reporting System (FAERS) database describing patients who drank alcohol during treatment with Chantix and experienced adverse reactions. Some patients experienced decreased tolerance to alcohol, including increased drunkenness, unusual or aggressive behavior, or they had no memory of things that happened (see Data Summary). We also reviewed FAERS and the medical literature1 for cases of seizures with Chantix and identified cases in which the patients who had seizures while taking Chantix either had no history of seizures or had a seizure disorder that had been well-controlled. In most of these cases, the seizures occurred within the first month of starting Chantix. Information about these risks has been added to the Warnings and Precautions section of the drug label and to the patient Medication Guide. We also updated the Warnings and Precautions section of the label to include information about several studies that investigated the risk of neuropsychiatric side effects on mood, behavior, or thinking occurring with Chantix. These included observational studies,2-5 as well as analyses that Pfizer conducted of randomized controlled clinical trial data.6 These studies did not show an increased risk of neuropsychiatric side effects with Chantix; however, they did not examine all types of neuropsychiatric side effects, and they had limitations that prevented us from drawing reliable conclusions. We previously communicated about possible serious neuropsychiatric side effects with Chantix in 2009 and 2011, and these recent studies were discussed at an FDA Advisory Committee meeting in October 2014. Pfizer is conducting a large clinical safety trial of Chantix to investigate this risk and results from this study are expected in late 2015. We will update the public as appropriate when this new information becomes available.
Varenicline is contraindicated in patients with a known history of serious hypersensitivity reactions or skin reactions to the drug.
Serious neuropsychiatric symptoms, including changes in mood (e.g., depression, mania), psychosis, hallucinations, paranoia, delusions, homicidal ideation, hostility, agitation, aggression, anxiety, panic, and suicidality (e.g., suicidal ideation, attempted and completed suicides), have been reported during postmarketing experience in patients receiving varenicline. In most cases, symptoms developed during varenicline therapy but, in others, symptoms developed after discontinuance of the drug. Some of these reported cases may have been complicated by nicotine withdrawal symptoms in patients who had stopped smoking; depressed mood also may be a symptom of nicotine withdrawal, and depression, which rarely has included suicidal ideation, has been reported in patients undergoing a smoking cessation attempt without medication. However, some of these symptoms occurred in patients receiving varenicline who continued to smoke. Such effects have occurred in patients with or without psychiatric illnesses; worsening of preexisting psychiatric illness also has been reported. Nicotine withdrawal also has been associated with exacerbation of an underlying psychiatric illness.
For more Drug Warnings (Complete) data for VARENICLINE (19 total), please visit the HSDB record page.

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Pharmacodynamics
Varenicline is a partial nicotinic acetylcholine receptor agonist, designed to partially activate this system while displacing nicotine at its sites of action in the brain.

C13H13N3

211.26

211.11

249296-44-4

Varenicline dihydrochloride;866823-63-4;Varenicline Hydrochloride;230615-23-3;Varenicline Tartrate;375815-87-5;Varenicline-d4;2183239-01-0

170361

Light yellow to yellow solid powder

1.247g/cm3

400.6ºC at 760mmHg

196.1ºC

1.25E-06mmHg at 25°C

1.667

0.01

152.87

1

3

0

16

254

0

JQSHBVHOMNKWFT-UHFFFAOYSA-N

InChI=1S/C13H13N3/c1-2-16-13-5-11-9-3-8(6-14-7-9)10(11)4-12(13)15-1/h1-2,4-5,8-9,14H,3,6-7H2

5,8,14-triazatetracyclo[10.3.1.02,11.04,9]hexadeca-2,4,6,8,10-pentaene

CP 526555; CP-526555; CP526555; CP-526555-18; CP 526555 18; CP52655518; Varenicline tartrate; Chantix; Champix

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 : ~20 mg/mL (~94.67 mM)
H2O : ≥ 20 mg/mL (~94.67 mM)

配方 1 中的溶解度: ≥ 2.5 mg/mL (11.83 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 (11.83 mM) (饱和度未知) in 10% DMSO + 90% (20% SBE-β-CD in 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900 μL 20% SBE-β-CD生理盐水溶液中，混匀。
*20% SBE-β-CD 生理盐水溶液的制备（4°C，1 周）：将 2 g SBE-β-CD 溶解于 10 mL 生理盐水中，得到澄清溶液。

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配方 3 中的溶解度: ≥ 2.5 mg/mL (11.83 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。