癌症患儿如何进行疫苗接种

来源:高一 发布时间:2020-09-16 点击:

 癌症患儿如何进行疫苗接种

 Valerio Cecinati, MD, PhD

 意大利巴里巴里大学抗肿瘤治疗1,2,3

 有关疫苗接种影响资料有限,因此,信息一般健康儿童或专家意见。的目的从最文献中期间和之后的疫注射小儿肿瘤医生的癌症免疫系统反应通过细胞和体液免疫反应机制。为了确定最佳略必须免疫系统变化大多数。虽然癌症本身可能会造成不同程度的免疫抑制,细胞抗肿瘤主要原因3细胞和体液免疫反应可能恶性肿瘤抑制。在儿童中,肿瘤骨髓抑制免疫,它们也可对淋巴细胞功能和自然杀伤细胞产生不影响目前恶性肿瘤体液免疫。一些研究显示在诊疫苗预防感染总免疫球蛋白浓度以及抗体浓度是正常的。这表明癌症本身影响相对较小6,7

 在急性淋巴细胞白血病(ALL)和急性髓系白血病(AML)恶性淋和祖细胞可能性免疫系统,可能损害疫苗抗体反应8 然而,等最近报本身任何抑制9

 患儿被诊癌症时的年龄影响对细菌和病毒疫苗产生保护性抗体的能力。诊恶性肿瘤婴儿他们的免疫系统免疫抑制。正因为如此,婴抗体滴度更的免疫缺陷,到第一年4,5,7

 化疗已被证明是癌症免疫系统损主要。化疗强度使用化疗嘌呤类似物导致CD4+细胞,糖皮质激素造成了可以解释免疫失衡的变性3

 例如,的治疗方案是针对淋巴细胞并能淋巴细胞功能产生不利影响,而治疗早期肾母细胞瘤化疗(素长春新碱)免疫抑制。虽然有些报告显示恶性肿瘤免疫缺陷实体瘤患者仍可能类似免疫缺陷。这解释高强度化疗,瘤高强度化疗5

 关于体液免疫,用于治疗儿童癌症化疗药物可能会导致免疫球蛋白数量和质量。等研究白血病和实体瘤免疫。他们发现只有白血病患IgA和IgM在癌症治疗完成显,6个月内恢复到正常值,G及水平都在正常2这些结果其报道一致的,总血清免疫球蛋白含量往往化疗期间减少,但都3-6个月恢复正常1,5,11,12

 一些研究表明细胞恢复正常长于体液免疫,然而,B淋巴细胞、T淋巴细胞和NK细胞13,14,15

 在完成化疗6-12个月B淋巴细胞通常数量和功能完全恢复。已被证CD4+淋巴细儿童ALL治疗6个月完成,化疗结束1年。CD8 +细胞完成化疗后3个月至1年一年或更长的时间恢复正常。NK细胞的6个月内到正常,但是,癌症患儿NK细胞数健康儿童水平5,11考虑到现有数据的性免疫系统在化疗后仍不清楚。然而,免疫系统重建3-12个月,所以这些必要的疫苗。适当的免疫策略下:1)疫苗是禁忌相对禁忌?2)禁忌,癌症3)是否应继续接种计划应 B.1 哪些疫苗禁忌和相对禁忌?活病毒疫苗癌症患儿。脊髓灰质炎黄热病口伤寒鼻减毒活流感疫苗这些儿童也禁忌。麻疹疫苗腮腺炎风疹水痘禁忌。应避免在癌症患儿活细菌疫苗(如卡介苗和口服伤寒疫苗)。活疫苗应推迟到免疫功能16,17,18

 B.1.1麻疹腮腺炎和风疹 麻疹腮腺炎风疹疫苗(measles, mumps and rubella, MMR)是一种活疫苗免疫患者相对禁忌。接受化疗,包括疗,应活16有关接种活疫苗的最佳时机。MMR疫苗可至少3个月。也表明活疫苗应免疫抑制治疗6-12个月19,20基于,所有活疫苗,,我们认为6个月后MMR疫苗一个好的。B.1.2水痘疫苗免疫儿童严重,包括肺炎脑炎水痘21,但是可以采取一些癌症患儿和治疗水痘。癌症患儿兄弟姐妹和易感家庭成员都应接种疫苗疫苗兄弟姐妹癌症患风险小。所有水痘或水痘癌症患应96小时VariZIG的预防。如果VariZIG,或阿昔洛韦(801/day1;4次/天7天)22,23

 水痘疫苗是相对禁忌美国儿科和的加拿大指南建议应考治疗结束12个月后淋巴细胞计数大于0.7-1.2×10/L和血小板计数100×109/L的易感ALL患儿中进行免疫接种。Schrauder在最近了数据,完全缓解12个月免疫抑制治疗(包括维持治疗)淋巴细胞计数1-5×109/L,进行VZ疫苗。如果在水痘流行期)可以维持化疗期间接种疫苗,治疗间隔4周24在研究,6-MP和甲氨蝶呤维持治疗患者安全接种,并了满意的抗体滴度,接受患者疫苗关25有证据表明这些患者好的办法是1-3个月接种疫苗单剂,以更大的24,26

 对实体瘤,即使化疗后不久水痘疫苗耐受。癌症患疫苗良好的免疫反应疫苗相关的副作用27值得注意的是,癌症患儿水痘疫苗疫苗相关并发症是可比。B.2哪些疫苗是非禁忌,癌症?B.2.1白喉破伤风细胞百日咳灭活B型流感嗜血杆菌活疫苗可以化疗。许多研究评估化疗期间(尤其是在)抗体反应已证明免疫通常受损。然而,前癌症患儿接种疫苗的建议按照常规的儿童免疫计划在完成后3-6免疫重28

 B.3针对有荚膜生物的疫苗B.3.1脑膜炎球菌疫苗 美国儿科学会建议四价脑膜炎球菌多糖疫苗或四价疫苗quadrivalent conjugate vaccine)。22癌症脑膜炎球菌霍奇金淋巴瘤(Hodgkin lymphomaHL)29,30

 目前脑膜炎球菌结合疫苗免疫抑制标准的。相对于免疫系统受损的病毒活疫苗,C型脑膜炎球菌结合疫苗纯的细菌成分。我们脑膜炎球菌疫苗用的。等或之后骨髓移植后C型脑膜炎球菌结合疫苗。作者总结C型脑膜炎球菌结合疫苗是安全的,但是,只40-50%的患者有效。因此,。在B淋巴细胞数0.260×109/L的患者和3个月在癌症患儿,如果3-6个月脑膜炎球菌结合疫苗被认为是安全和有效的31

 B.3.2 肺炎球菌疫苗 癌症患儿容易严重的细菌感染29患有霍奇金淋巴瘤(HL)的儿童30,32虽然免疫抑制患者肺炎球菌疫苗的有限HL患儿在接受肺炎球菌疫苗癌症患儿应免疫系统恢复时(完成3-6个月)肺炎球菌疫苗。可以健康儿童肺炎球菌疫苗:婴儿应该结合疫苗,而5岁以上但9岁的儿童可七价疫苗或23价疫苗,9可价疫苗。对于2岁以上5岁的儿童来说,接种计划应参考镰状细胞33

 B.3.3乙肝和甲肝疫苗在感染乙肝病毒的国家感染癌症患儿主要原因之一。癌症患者乙肝病毒感染的发病率因为这种感染可导致慢性携带者和慢性肝病发病率,某些在肝脏代谢抗肿瘤药物药代动力学改变,化疗延迟。90年代以来,许多国家(例如,意大利在1990年和波兰在1995年)新生儿接种乙肝。由于这,更多肿瘤保护水平抗乙肝病毒抗体,保障35在那些没有乙肝病毒计划免疫特别是发展中国家,这种病毒的感染险。癌症患乙肝疫苗,在某些情况下必要(特别是在发展中国家)。一些研究表明这疫苗的使用是安全免疫,即使疫苗维持治疗36,37,38

 关于甲肝病毒(HAV)疫苗在癌症患儿数据非常有限。只有2文描述甲型肝炎疫苗癌症患儿的安全和。这些研究报告接受化疗儿童对疫苗良好的抗体反应,并认为接受化疗的儿童对甲肝病毒预防接种的。39,40B.4在化疗完成后,儿童是否应继续接种计划,应?这些问题不能得到的答复,因为争议,提供了相互矛盾的信息。癌症患儿的最佳接种策略报三种可能的略:1)如果保护性抗体滴度低的证据。2)复种。3)儿童免疫计划。Zignol等支持列表中的第一项略。他们192名实体瘤白血病患儿化疗破伤风脊髓灰质炎白喉乙型肝炎麻疹流行性腮腺炎和风疹血清抗体滴度。他们发现52%的化疗降低血清抗体的滴度,主要(46%),其次是疹腮腺炎麻疹(约25%)12个月加强免疫是一种简单和具有成本效益的恢复体液免疫法7

 Fioredda等评估70名接受白血病治疗的12个乙肝和破伤风抗体的。他们观察到85%的患健康儿童媲美的保护性抗体滴度。他们建议常规的儿童免疫接种计划41Laws等对这些结果因为他们的经验保护性抗体相当大失尽早种似乎是这些最佳策略42

 Von der Hardt等人的建议Zignol等类似。等人白喉破伤风毒素脊髓灰质炎病毒1-3血清型血清抗体滴度(化疗0-15个月白喉破伤风0-18个月脊髓灰质炎病毒)。总,白喉破伤风脊髓灰质炎病毒抗体滴度62%18%和75%。缺乏保护抗体加强42

 Patel和等人支持策略。等人完成白血病治疗疫苗预防的疾病的保护滴度这一策略是可行的。此外,他们还发现所有疫苗预防疾病抗体滴度接种一年后仍8

 Reinhardt等人发现139恶性肿瘤对麻疹流行性腮腺炎脊髓灰质炎白喉破伤风和特异性抗体降低,检测不到。然而,在大多数情况下原抗体滴度恢复恶性肿瘤是合理的。Brodtman等人和他们的同事建议,儿科肿瘤化疗完成定期监测免疫,并应根据需要这些儿童确保持续的4

 Yu等采用了Reinhardt等人所使用的相同的策略肉瘤患者分析。他们发现大部分瘤(71.2%)大多数疫苗可预防疾病抗体滴度。这一发现表明癌症患儿可能需要31

 C.结论 免疫受损患者资料有限,是癌症。尽管,:1)癌症患儿出现的疫苗相关的副作用与健康儿童的。2)从的,大多数将需要1个或多个疫苗,很少实验室能够进行必要的。因为保护性抗体滴度没有明确建立,某一特定浓度可能帮助,健康儿童的研究可能并不适用于癌症儿童。

 3)在癌症,免疫系统重建注射疫苗可接受的免疫反应所需的最短是化疗完成后3个月。

 4)和细菌疫苗禁忌,水痘和MMR疫苗相对禁忌,活疫苗

 5)患相比,些不到1岁,尤其是没有完成计划,疫苗抗原,因此应更仔细地。

 6)癌症免疫接种最佳法仍在3种方法常规疫苗接种计划。参考文献参考文献 1 Kristinsson VH, Kristinsson JR, Jonmundsson GK, Jonsson OG, Thorsson AV, Haraldsson A. Immunoglobulin class and subclass concentrations after treatment of childhood leukemia. Pediatr Hematol Oncol. 2001;18(3):167-72.

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