{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,15]],"date-time":"2023-10-15T05:10:37Z","timestamp":1697346637884},"reference-count":22,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2006,10,18]],"date-time":"2006-10-18T00:00:00Z","timestamp":1161129600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Paediatrics Child Health"],"published-print":{"date-parts":[[2006,11]]},"abstract":"<jats:p><jats:bold>Aim:\u2003<\/jats:bold> Alpha 1\u2010antitrypsin (AAT) deficiency is the most common genetic cause of liver disease in children. The Pi*S carrier rate among Filipinos is &lt;1%. Its significance in Filipino infants with neonatal cholestasis has not been investigated. The aim of the study was to determine the incidence of AAT deficiency among Filipino infants presenting with neonatal cholestasis.<\/jats:p><jats:p><jats:bold>Methods:\u2003<\/jats:bold> Genotype determination that detects Pi*S and Pi*Z alleles was performed using Elucigene AAT reagents (Cellmark Diagnostics, UK). AAT inclusions were identified by light microscopy using periodic acid\u2010Schiff (PAS) stain.<\/jats:p><jats:p><jats:bold>Results:\u2003<\/jats:bold> Ninety\u2010six infants (mean age: 89\u2003days, 48 males) with a history of jaundice since 2\u2003weeks old and a direct bilirubin level &gt;20% of the total were recruited. Only one patient (1 month old, male) was positive for Pi*S allele and 95 were negative for Pi*S and Pi*Z alleles, with an annual incidence of 0.7%. Of the 96, 49 infants underwent diagnostic percutaneous liver biopsy. All liver biopsy specimen were subjected to PAS stain and two infants, 2 and 4\u2003months old, both with idiopathic neonatal hepatitis, had suspicious findings of AAT globules that was confirmed on immunostain. Both infants were negative for Pi*S alleles. The only patient positive for Pi*S allele was negative for PAS globule on liver biopsy.<\/jats:p><jats:p><jats:bold>Conclusion:\u2003<\/jats:bold> Our results showed a low incidence of AAT deficiency caused by the Pi*S and Pi*Z alleles among Filipino infants presenting with neonatal cholestasis, similar to the low carrier rate in the population.<\/jats:p>","DOI":"10.1111\/j.1440-1754.2006.00953.x","type":"journal-article","created":{"date-parts":[[2006,10,18]],"date-time":"2006-10-18T19:50:26Z","timestamp":1161201026000},"page":"694-697","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Low incidence of alpha 1\u2010antitrypsin deficiency among Filipinos with neonatal cholestatis"],"prefix":"10.1111","volume":"42","author":[{"given":"Josephine J","family":"Tan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eva Maria","family":"Cutiongco\u2010dela Paz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jose Maria C","family":"Avila","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Germana V","family":"Gregorio","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2006,10,18]]},"reference":[{"key":"e_1_2_7_2_2","doi-asserted-by":"publisher","DOI":"10.1172\/JCI200216787"},{"key":"e_1_2_7_3_2","doi-asserted-by":"crossref","first-page":"481","DOI":"10.1093\/ajhp\/52.5.481","article-title":"Pathophysiology and treatment of alpha 1\u2010antitrypsin deficiency","volume":"52","author":"MacDonald JL","year":"1995","journal-title":"Am. 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