小儿胆汁淤积性肝病的病因学特征
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Department of
and
Molecular Metabolism
Unwers毋Graduate&hod of Medical
Dental&妇,蹦,Kagoshima
disease(CLD)
【Abstract】Objective
in children.and
to
To explore the
mjor
Ollr
Was performed
on
63 CLD
ca即s diagnosed from 0cL 2003
were
M毗2009
department,including 36 males and 27 females.Their clinical data
wel'e
collected.and
gene were were
etiological features of eholestatie liver
investigate the molecular epidemiological distribution
of妣5A13
mutations in CLD.
Method
to
A clinical cross.sectional invesitgation in
dup。
【关键词】胆汁淤积,肝内;线粒膜转运蛋白质类;突变;钙结合蛋白质类;有机阴离子
转运子
Citrin deficiency is
an
important etiology for cholestafic Hver disease in children
’Department
soNG Yuan-zong‘.
group.Several
mutations
detected by direct sequencing etiologies
were
amplified
by
genomic DNA・PeR.Result
case8
No specific
identified
were
in 24
on
Cases.Among the 39
can
NICCD in
particular,constitute
conl/non
causative factors for CLD.Most of the CLD conditions some
be
improved,even recovered clinically,although
cases presented wit}l poor prognosis.Seyen mutations in
S麟A13
gene
were
detected,among which。
851.854del.IVS6+5G>A。IVSl6ins3kb and 1638.1660dup were the leading four mutations,respectively.
【Key words】Cholestasis,intmhepatic;Mitochondrial Calcium-binding proteins;
on
7
biliary atresia,Caroli
s
disease and gallbladder polyp,were the third.Ten of the 55
csses
patients
follow—up have passed away,while the remaining 45
were
deficiency(NICCD,21 cases),transient
galactosemia,tyrosinemia
I,galactose
kinase
I,followed by
deficiency,omithine carbamoyl transferase deficiency and glycogen storage disease acquired causes(7 cases in total),such as total parenteral nutrition associated
etiology and prognosis screened by mes.iis
analyzed and summarize&Thirteen by
onr
tO
17
mutations in SLC25A13 SLC25A13
of procedures established previously of DNA fTagments of the 63
deficiency,NICCD)是SLC25A13基因突变导致肝型 天冬氨酸/谷氨酸载体eitrin功能缺陷而形成的一 种CLD∞]。2006年国内文献报道经突变分析确诊 的NICCD患儿以来HJ,我国儿科界对本病临床和实 验室特征的认识逐步深入K。3I。我们进一步总结 2003年10月至2009年3月间我科诊治的63例 CLD患儿的主要病因学特征,并探讨SLC25A13基 因突变在CLD的分子流行病学分布特点。 对象与方法 一、研究对象 参照国内外文献[14一17],符合以下两条标准之 一者入选CLD研究对象:(1)临床不同程度的黄 疸,尿色深黄而大便颜色变浅,总胆红素高于 85Ⅳnol/L,且结合胆红素/总胆红素比值高于 20%;(2)临床黄疸不明显,但血结合胆红素高于
作者单位:510630广州,暨南大学附属第一医院儿科(宋元宗);日本鹿儿岛大学医齿学缝合研究科分子病戆生 化学教研室(宋元宗、牛饲美晴、小林圭子);日本德岛文理大学健康科学研究所(佐伯武赖)
万方数据
生堡』L整盘盔!Q螋生§旦箍垒2鲞筮!期垦堕!』旦i选:叁竖塾!Q塑:!些兰!t翼垒!
in
total),including
Organic anion transporters
memblime transport proteins;Mutation;
胆汁淤积性肝病(cholestatic
liver
disease,
象中有44例患儿接受SLC25A13基因突变分析。 常规筛查目标为日本人中最先发现的13~17种突 变类型,所用的方法PCR/PCR.RFLP,基因扫描和 SNaPshot,均为课题组已建立的成熟方法;对于筛查 仅发现一个突变的患儿,用基因组直接测序法分析 SLC25A13基因的全部18个外显子及其侧翼序列, 寻找另外一个突变类型[3,s4 0’18]。研究内容及其意 义已告知患儿父母,并请其签署知情同意书。 结 一、CLD病因及预后 如表1所示,本组63例CLD患儿中有24例未 能明确病因,占38%,而病因明确者共39例,占 62%。在已明确的CLD病因中,遗传代谢病居首 位,包括6种代谢病27例患儿,占全部CLD患儿总 数的43%,其中NICCD最多见,共21例。其次是获 果
CLD
(23/40),IVs6+5G>A(6/40),IVSl6ins3kb(3/40),1638-1660dup(2/30),A54lD(1/30), B319X(1/30)and G333D(1/30),respectively,and there were other 3 mutations(3伽)still needing
UsHlK蛆Miharu。KOBA YASHI Keiko。SAHEKI Takeyori.
Biochemical Genetics,Kagoshima
of
pedidl^cs.First
Affiliated
and
Hospital,Jinan University,Guangzhou 510630,China and 890・8544,Japan
-624・
.临床研究与实践・
小儿胆汁淤积性肝病的病因学特征
宋元宗牛饲美晴小林圭子佐伯武赖 【摘要】
目的研究胆汁淤积性肝病(CLD)患儿的主要病因学特在CLD的分子流行病学分布。方法2003年10月至2009年3月阃我科诊治的CLD患儿 63例,其中男36例,女27例。采用临床横断面研究,收集整理研究对象的临床资料,分析总结其病 因及临床转归;应用课题组已建立方法常规筛查SLC25A13基因的13—17种突变类型;在部分患儿中
identification in the remaining 3 alleles.Conclusion identified.However.inhefited The etiologies for CLD in 80me
cases
carl
not
be
metabolic diseases。including
CLD)包括肝细胞胆汁形成异常或胆汁自肝细胞经 肝内胆管或肝外胆道流出受阻的一组数量众多的疾 病…。在实际临床工作中由于实验室条件等因素 限制,相当部分CLD患儿的病因目前仍难以明 确【2 J。citrin缺陷导致的新生儿肝内胆汁淤积症 (neonatal
intrahepatic cholestasis caused by citrin
20
得性因素,包括全胃肠道外营养相关胆汁淤积症、巨 细胞病毒肝炎和先天性梅毒,占11%。再次为先天 性胆道畸形,包括胆道闭锁、Caroli病和胆囊息肉, 仅占8%。本组63例CLD患者中有8例失随访, 无法确定最终预后。55例随访患者中10例已经夭
were
improved
or
recovered clinically.
SLC25A13 gene analysis
泐5A13
performed in 44
to
alleles in
total)were found
have
subjects and 21 of tIlem from 20 families(with 40 mutations。and the seven mutations detected were 85 1-854del