毒理性
哺乳期使用概要:依法韦仑会排入母乳中,一些婴儿的血清中会发现少量。对HIV阳性母亲的依法韦仑治疗似乎不会影响他们HIV阴性婴儿的生长和发育。在美国和其他可以获取清洁水源和负担得起的替代喂养的国家,建议HIV阳性母亲不要哺乳,以避免产后HIV-1感染传播。通过抗逆转录病毒疗法实现并维持病毒抑制,可以将哺乳传播风险降低到1%以下,但并非零。HIV阳性且持续不可检测病毒载量的个体,如果选择哺乳,应在这一决定中得到支持。
哺乳婴儿的影响:十三位母亲在服用每日600毫克依法韦仑、每日150毫克拉米夫定和每日300毫克齐多夫定(n=12)或每日60毫克司他夫定(n=1)的同时哺乳了他们的婴儿。在哺乳6个月后,没有报告婴儿出现不良反应,没有感染HIV,并且所有婴儿都正常发育。
在乌干达进行的一项非盲研究比较了哺乳婴儿及其HIV阳性母亲接受基于每日一次600毫克依法韦仑或每日两次400毫克洛匹那韦加100毫克利托那韦的抗逆转录病毒治疗的结果。所有母亲接受每日两次150毫克拉米夫定、300毫克齐多夫定和每日一次甲氧苄啶-磺胺甲恶唑。所有婴儿接受了预防治疗,要么是出生后1周的齐多夫定,要么是6周的奈韦拉平,加上从6周龄到断奶后6周的甲氧苄啶-磺胺甲恶唑。几乎所有婴儿在6个月大之前都是纯母乳喂养,约73%的婴儿在12个月大之前部分母乳喂养。两组婴儿的住院或不良事件(包括贫血、中性粒细胞减少或死亡)没有统计学差异。
在接受每日600毫克依法韦仑作为多药治疗HIV感染一部分的32位哺乳母亲(哺乳程度未说明)的婴儿中,研究者在1、3和6个月龄时没有注意到不良影响,母亲也没有报告。
马拉维的一项前瞻性队列研究比较了接受依法韦仑和替诺福韦酯(n=260)的HIV阳性母亲的婴儿与HIV阴性母亲(n=125)的婴儿。婴儿在长达18个月的时间内被跟踪观察生长和发育,此时治疗组有169对母婴,HIV阴性组有54对。接受治疗的女性哺乳婴儿与未接受治疗母亲的婴儿在生长和发育方面没有差异。
对哺乳和母乳的影响:在接受依法韦仑治疗的男性和至少一位女性中报告了男性乳房发育。依法韦仑似乎比其他抗逆转录病毒药物更可能引起男性乳房发育。男性乳房发育最初是单侧的,但可能会进展到双侧。即使继续用药,通常也会在一年内自发解决。这些发现与哺乳母亲的相关性尚不清楚。已建立哺乳的母亲体内的催乳素水平可能不会影响她的哺乳能力。
◉ Summary of Use during Lactation:Efavirenz is excreted into breastmilk and small amounts are found in the serum of some infants. Treatment of mothers of HIV-positive mothers with efavirenz does not appear to affect growth and development of their HIV-negative breastfed infants. In the US and other countries where access to clean water and affordable replacement feeding are available, it is recommended that mothers living with HIV not breastfeed their infants to avoid postnatal transmission of HIV-1 infection. Achieving and maintaining viral suppression with antiretroviral therapy decreases breastfeeding transmission risk to less than 1%, but not zero. Individuals with HIV who are on antiretroviral therapy with a sustained undetectable viral load and who choose to breastfeed should be supported in this decision.
◉ Effects in Breastfed Infants:Thirteen mothers nursed their infants while they were taking efavirenz 600 mg daily, lamivudine 150 mg and zidovudine 300 mg daily (n = 12) or stavudine 60 mg daily (n = 1) . No adverse reactions were reported in the infants after 6 months of breastfeeding, none had developed HIV infection and all were developing normally.
An unblinded study in Uganda compared the outcomes of breastfed infants and their HIV-positive mothers who were randomized to receive antiretroviral therapy that was based either on efavirenz 600 mg once daily or lopinavir 400 mg plus ritonavir 100 mg twice daily during breastfeeding. All mothers received lamivudine 150 mg, zidovudine 300 mg twice daily and trimethoprim-sulfamethoxazole once daily. All infants received prophylaxis with either zidovudine for 1 week or nevirapine for 6 weeks, plus trimethoprim-sulfamethoxazole from 6 weeks of age to 6 weeks after weaning. Almost all of the infants were exclusively breastfed until 6 months of age and about 73% were partially breastfed until 12 months of age. There was no statistical difference in hospitalizations or adverse events including anemia, neutropenia or deaths among infants in the two groups.
Among 32 breastfed (extent not stated) infants whose mothers were taking efavirenz 600 mg daily as part of a multi-drug treatment for HIV infection, no adverse effects were noted by investigators or reported by mothers at 1, 3 and 6 months of age.
A prospective cohort study in Malawi compared the infants of HIV+ mothers taking efavirenz and tenofovir disoproxil fumarate (n = 260) to infants of mothers who were HIV negative (n = 125). Infants were followed for growth and development for up to 18 months at which time there were 169 mother-infant pairs in the treatment group and 54 in the HIV-negative group. No difference was found in the growth and development of the breastfed infants of treated women compared to the infants of untreated mothers.
◉ Effects on Lactation and Breastmilk:Gynecomastia has been reported among men and at least one woman receiving efavirenz therapy. Efavirenz appears to be much more likely to cause gynecomastia than other antiretroviral agents. Gynecomastia is unilateral initially, but can progress to bilateral. Spontaneous resolution usually occurred within one year, even with continuation of the regimen. The relevance of these findings to nursing mothers is not known. The prolactin level in a mother with established lactation may not affect her ability to breastfeed.
来源:Drugs and Lactation Database (LactMed)