35
etermination of Isotretinoin nd Acitretin in Pregnancy Acitretin (trade names Soriatane and Neotigason) is a second-generation retinoid. It is taken orally, and is typically used for psoriasis.. Acitretin is an oral retinoid used in the treatment of severe resistant psoriasis. Because of the potential for problems and severe side effects it is generally used in only very severe cases of psoriasis that have been unresponsive to other treatments. Acitretin LC-MS/MS Retinoi c acid Acitret in LC-MS/MS Liquid chromatography Mass spectrometry The goal of this study was to develop a method for the simultaneous measurement of biologically active endogenous retinoids in human serum. Due to the challenges in separating the isomers of RA as well as the metabolites, chromatographic separation was optimized for UPLC. The method was validated with spiked charcoal-treated blank human serum and used to determine retinoid concentrations in serum from healthy men. Retinoic acid Retinoic acid is a metabolite of vitamin A (retinol) that mediates the functions of vitamin A required for growth and development. The key role of retinoic acid in embryonic development mediates the high teratogenicity of retinoid pharmaceuticals, such as isotretinoin used for treatment of cancer and acne

(마더리스크라운드) Determination of Isotretinoin & Acitretin in Pregnancy

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Page 1: (마더리스크라운드) Determination of Isotretinoin & Acitretin in Pregnancy

Determination of Isotretinoin and Acitretin in Pregnancy

Acitretin (trade names Soriatane and Neotigason) is a second-generation retinoid. It is taken orally, and is typi-cally used for psoriasis.. Acitretin is an oral retinoid used in the treatment of severe resistant psoriasis. Because of the potential for problems and severe side effects it is generally used in only very severe cases of psoriasis that have been unresponsive to other treatments.

Acitretin

LC-MS/MS

Retinoic acid

Acitretin

LC-MS/MSLiquid chromatography

Mass spectrometry

The goal of this study was to develop a method for the simultaneous measurement of biologically active endoge-nous retinoids in human serum. Due to the challenges in separating the isomers of RA as well as the metabolites, chromatographic separation was optimized for UPLC. The method was validated with spiked charcoal-treated blank human serum and used to determine retinoid con-centrations in serum from healthy men.

Retinoic acid Retinoic acid is a metabolite of vitamin A (retinol) that mediates the functions of vitamin A required for growth and development. The key role of retinoic acid in embry-onic development mediates the high teratogenicity of retinoid pharmaceuticals, such as isotretinoin used for treatment of cancer and acne

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종류 관용명 화학물질명 약칭Acitretin 류 Acitretin 9-(4-Methoxy-2,3,6-trimethylphenyl)-3,7-dimethyl-

nona-2,4,6,8-tetraenoic acid

Etretinate Ethyl all-trans-9-(4-methoxy-2,3,6-trimethylphenyl)-3,7-dimethyl-2,4,6,8-nonatetraenoate

Retinoic acid (RA) 류 Tretinoin all- trans retinoic acid atRA

alitretinoin 9- cis –retinoic acid 9-cis RAIsotretinoin 13- cis -retinoic acid 13-cis RA

4oxo- all-trans -retinoic acid 4oxo- at RA4oxo-13- cis –retinoic acid 4oxo-13- cis RA4oxo-9- cis –retinoic acid 4oxo-9- cis RA

주의 : Vitamin A 계열 물질로 , 빛에 의해 광분해가 일어날수 있으므로 최대한 차광하여 보관하고 시약기구는 Amber 류를 사용

Abbreviation Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Vitamin A (Retinoids)

NADP+

NADPH

Retinol Dehydrogenase

IrreversibleOxidation

NAD+,FAD

Cis-Isomer !!

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Treatment

IsotretinoinIsotretinoin (13-cis retinoic acid)

• 1970s : Discovered • early 1980s : Introduced into clinical as “Accutane”

British Medical Association and Royal Pharmaceutical Society. BritishNational Formulary. London: BMA/RPS; September 2010. p. 716.

Reduce sebum secretion nodulo-cystic and conglobate acne severe acne scarring acne

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Isotretinoin

BIT Druginfo ; http://www.druginfo.co.kr/

Isotretinoin (13-cis retinoic acid)

• 1970s : Discovered • early 1980s : Introduced into clinical as “Accutane”

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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IsotretinoinIsotretinoin (13-cis retinoic acid)

• 1970s : Discovered • early 1980s : Introduced into clinical as “Accutane”

Material characteristic

Rapidly absorbed following oral administration highly bound to plasma protein metabolised to 4-oxo-isotretinoin

Elimination half-life isotretinoin in plasma is 6–36 hours up to 50 hours for its longest-lived metabolite safe levels of the drug : within 2 weeks of the last dose However, Nulman et al. Study

: 16 young adults (11 women and five men) and found a prolonged elimination half-life in one female patient of 167.4 hours → 35-day period would be required until safe levels

National Teratology Information Service. Use of Isotretinoin in Pregnancy.2008 [www.toxbase.org].

Isotretinoin half life6–36 hours

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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IsotretinoinIsotretinoin (13-cis retinoic acid)

• 1970s : Discovered • early 1980s : Introduced into clinical as “Accutane”

Dose and Clearance

Dose Dependent on their weight and severity of the condition Usually prescribed as 0.5–1.0 mg/kg/day in one or two

divided doses Total treatment course : from 4 to 6 months (with a total

cumulative dose of 120–150 mg/kg)

Clear-ance no significant correlation between dose and steady state

concentration due to large variability in clearance

British Medical Association and Royal Pharmaceutical Society. BritishNational Formulary. London: BMA/RPS; September 2010. p. 716.

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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IsotretinoinIsotretinoin (13-cis retinoic acid)

• 1970s : Discovered • early 1980s : Introduced into clinical as “Accutane”

Epidemiology

Use most usually occurs in adolescents In 1988, to 60 000 female patients of childbearing age,

per year, in the USA were treated with isotretinoin Tertiary centre in Leeds demonstrated

: Leeds has an approximate population of 160 438 females of childbearing age (15–44 years). Therefore, in a year it would be expected that approximately 1 in every 500 of the child-bearing population will be exposed to isotretinoin.

In 2004, British Association of Dermatologists reported 16 pregnancies over a 6-month period

Canadian study of 8609 women treated with isotretinoin found that 90 became pregnant (1%)

Goodfield MJD, Cox NH, Bowser A, McMillan JC, Millard LG, Simpson NB, Ormerod AD. Advice on the safe in-troduction and continued use of isotretinoin in acne in the UK 2010. Br J Dermatol 2010;162:1172–9.

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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IsotretinoinIsotretinoin (13-cis retinoic acid)

• 1970s : Discovered • early 1980s : Introduced into clinical as “Accutane”

Birth defect during pregnancy

Dolan SM. Isotretinoin and pregnancy a continuing risk for birth defects. Medscape Ob/Gyn 2004;9(2).

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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IsotretinoinIsotretinoin (13-cis retinoic acid)

• 1970s : Discovered • early 1980s : Introduced into clinical as “Accutane”

Birth defect during pregnancy

Dolan SM. Isotretinoin and pregnancy a continuing risk for birth defects. Medscape Ob/Gyn 2004;9(2).

Craniofacial defects ear defects eye defects cleft palate micrognathia (small jaw) depressed nasal bridge Dysmorphism ocular hypertelorism (widely spaced eyes)

Central nervous system defects microencephaly facial nerve palsy hydrocephalus cortical and cerebellar defects

Cardiovascular de-fects Fallot’s tetralogy septal defects transposition of the great vessels and

aortic arch hypoplasia

Thymic abnormalities hypoplasia aplasia and ectopia

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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IsotretinoinIsotretinoin (13-cis retinoic acid)

• 1970s : Discovered • early 1980s : Introduced into clinical as “Accutane”

Birth defect during pregnancy

Over all 3) : National Teratology Information Service. Use of Isotretinoin in Pregnancy.2008 [www.toxbase.org].

Reference malformations spontaneous miscarriage

Over all 3) 20-30% 20-40%

Berard et al 9) 11% 3%

Lammer et al 18) 14%

Berard et al 9) : Berard A, Azoulay L, Koren G, Blais L, Perreault S, Oraichi D. Isotretinoin, pregnancies, abortions and birth defects: a population-based perspective. Br J Clin Pharmacol 2007;63:196–205.

Lammer et al 18) : Lammer EJ, Chen DT, Hoar RM, Agnish ND, Benke PJ, Braun JT, et al. Retinoic acid embryopathy. N Engl J Med 1985;313:837–41.

Suggest “should be avoided in pregnancy”

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnant

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Retinoic acid and Acitretin 임상 피부학에서 사용되는 Retinoid

1 세대 : nonaromatic retinoids • all-trans-retinoic acid • tretinoin• 13-cis-retinoic acid

2 세대 : monoaromatic retinoids • Etretinate• acitretin

3 세대 : polyaromatic retinoid derivatives • Adapalene• tazarotenic acid

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Retinoic acid and Acitretin 임상 피부학에서 사용되는 Retinoid

1 세대 : nonaromatic retinoids • all-trans-retinoic acid • tretinoin• 13-cis-retinoic acid

2 세대 : monoaromatic retinoids • Etretinate• acitretin

3 세대 : polyaromatic retinoid derivatives • Adapalene• tazarotenic acid

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Retinoic acid and AcitretinAcitretin

9-(4-Methoxy-2,3,6-trimethylphenyl)-3,7-dimethylnona-2,4,6,8-tetraenoic acid

• 1970 년대 피부암에서의 효과를 평가하기 위해 처음 약으로 제작 1,2

• 피부과영역에서는 많은 증식성 질환인 건선 , 어린선 , 여드름 등에서 널리 사용 1,2

• 특히 건선에서는 각질화 , 세포증식 , 염증 및 면역조절에 효과 1,2

• 1972 년에 합성된 monoaromatic retinoid 인 etretinate 는 항증식작용과 세포분화에 효과로1984 년 유럽에서 1986 년에 미국에서 처음으로 건선의 전신치료로 승인 1,3

• 하지만 etretinate 는 높은 지방친화성으로 지방조직에 저장되어 반감기가 2 개월로 길며 , 치료 중단후에도 완전히 제거되기까지 2 년 정도 소요되는 단점 4

• etretinate 은 비슷한 효능과 짧은 반감기를 가진 활성 대사물질인 acitretin 으로 대체 되었으며 1997 년 FDA 의 건선치료제로 승인 1,4

• acitretin 도 알코올을 섭취하면 체내에서 재에스테르화되어 다시 etretinate 로 변환 가능 1,4,5

신봉석 · 김동진 . 건선의 치료에서 Acitretin. 대한건선학회지 제 12 권 , 제 1 호 Journal of the Korean Society for Psoriasis Vol. 12, No. 1, 7-12, 2015

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Retinoic acid and Acitretin Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnant

Metabolism

13cis-Acitretin

Etretinate

13-cis Acitretin

Trans-Acitretin

2. Acitretin1. Retinoic acid

Cis-Isomer !!

AcoholEsterification!

4OH RA

4oxo RA

11-cis RA

4oxo 13-cis RA

4oxo 9-cis RA

Metabolite

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Retinoic acid and Acitretin Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnant

Metabolism

13cis-Acitretin

Etretinate

13-cis Acitretin

Trans-Acitretin

2. Acitretin1. Retinoic acid

Cis-Isomer !!

AcoholEsterification!

4OH RA

4oxo RA

11-cis RA

4oxo 13-cis RA

4oxo 9-cis RA

Metabolite

EsterificationThe classic synthesis is the Fischer esterification, which involves treating a carboxylic acid with an alcohol in the presence of a dehydrating agent:

RCO2H + R′OH RCO⇌ 2R′ + H2O

F. Grønhøj Larsen. Acitretin is converted to etretinate only during concomitant alcohol intake defects. British Journal of Dermatology 2000; 143: 1164±1169.

+

Acitretin

Etretinate

H2O

Ethanol

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임신중 건선 치료제 ( 레티노이드 제제 ) 복용 ?

Retinoic acid and Acitretin Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

Page 20: (마더리스크라운드) Determination of Isotretinoin & Acitretin in Pregnancy

임신중 건선 치료제 ( 레티노이드 제제 ) 복용 ?

Retinoic acid and Acitretin Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

....' 혈액관리법 시행규칙 ' 을 일부 개정해 최근 시행에 들어갔다 ....

Page 21: (마더리스크라운드) Determination of Isotretinoin & Acitretin in Pregnancy

임신중 건선 치료제 ( 레티노이드 제제 ) 복용 ?

Retinoic acid and Acitretin Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

....' 혈액관리법 시행규칙 ' 을 일부 개정해 최근 시행에 들어갔다 ....

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US FDA Pregnant categoryTitle 21, Part 201.57 (9)(i) of the Code of Federal Regulations

Category Description

ANo risk in controlled human studies사람을 대상으로 한 연구에서 태아에 대한 위험이 없는 것으로 알려진 가장 안전한 약물들이며 일반적인 종합비타민이나 산모용 비타민이 여기에 해당된다

BNo risk in other studies동물을 대상으로 한 연구에서 위험성이 없는 것으로 판단되나 인간을 대상으로 한 연구가 결여된 경우로 동물이나 인간에게 유의한 위험이 없는 약물들 , 예로 페니실린이나 인슐린 , 타이레놀 등이 여기에 해당된다 .

CRisk not ruled out동물이나 사람에게서 적절한 연구가 되어 있지 않거나 , 혹은 동물실험에서 태아에 해로운 영향을 다소 끼치기는 하지만 사람에게서 적절한 자료를 얻을 수 없는 약물들이 여기에 포함되며 대다수의 약물이 여기에 포함된다 .

DPositive evidence of risk태아에 대한 위험의 증거가 있으나 약물을 사용하여 얻을 수 있는 이득이 태아에 대한 위험보다 크다고 판단되는 약물들이다 . 항암제와 간질환자에게 사용하는 항경련제 등이 여기에 해당된다 .

X

Contraindicated in pregnancy명백한 기형의 위험성이 증명되었고 , 그 위험성이 이득보다 현저한 약물들로 임신 중에 절대 사용하지 말아야 하는 약물들이다 . 여드름치료제인 이소트레티노인 (isotretinoin)이라는 약물은 임신 중 중추신경계 , 안면 , 심혈관계의 기형을 만드는 대표적인 X 등급의 약물이다 .

Clinical use - Acne( 여드름 )Pharmacokinetic data - Half life: 10-20 hours - Metabolism: hepaticPregnancy Category: X

Clinical use - psoriasis( 건선 )Pharmacokinetic data - Half life: 49 hours - Metabolism: hepaticPregnancy Category: X(Women must avoid becoming pregnant for at least 3 years after discontinuing acitretin)

Acitretin

Isotretinoin

임신 중 약물의 위험도약물에 노출된 시기가 매우 중요하지만 또한 약물마다 태아에게 미치는 영향도 제 각각일 것이다 . 미국 식약청 (FDA) 에서는 약물을 임신 중에 사용할 경우 그 득과 실을 비교하여 A, B, C, D, X 의 5 등급으로 분류하고 있다 .

Retinoic acid and Acitretin Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Category Description

1 등급( 금기 )

태아에 대한 위험성이 명확하여 , 의학적으로 불가피한 경우 이외에는 반드시 임부에게 투여를 피해야 하는 의약품

2 등급( 주의 )

태아에 위험성이 높을 것으로 예상되지만 임부에 대한 치료적 유익성이 위험성보다 더 높을 경우 신중하게 투여 가능한 의약품

임부금기 의약품임신 또는 임신하고 있을 가능성이 있는 환자에게 투여함으로써 태아에 대한 위험성이 높은 의약품

AcitretinIsotretinoin

임부에 대한 의약품 적정사용 정보집Retinoic acid and Acitretin Retinoids and Pregnancy

Determination of Isotretinoin and Acitretin in Pregnany

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임부에 대한 의약품 적정사용 정보집

• 미국 X 등급 : 임부에게 투여 금기임• 호주 X 등급 : 이 약물은 태아에게 영구적 손상을 일으킬 위험이 매우 높으므로 , 임부 또는 임신 가능성이 있는 여성에게는 투여하면 안된다 .• 일본 5 점 : 역학 조사 결과 기형을 일으키는 것이 명확하다 . 또는 동물생식 독성실험 결과 , 사람에서도 기형을 일으킬 가능성이 매우 높다 .

Retinoic acid and Acitretin Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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임부에 대한 의약품 적정사용 정보집

“ 선천성 이상 위험은 없으나 태아와 신생아에게 가역적 독성을 나타내는 경우가 있는데 , 이러한 약물도 임신에 위험한 약물로 분류된다 . 임신기간 중 투여된 위험 약물이 일으키는 선천성 이상 및 태아 독성 등 부작용 유발”BG Katzung. Basic & Clinical Pharmacology, 11h Ed.

(Chapter 59. Special Aspects of Perinatal & Pediatric Pharmacology) 2009. The McGraw-Hill Companies, Inc.

Retinoic acid and Acitretin Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Chemical infoMarker 특징 비고

Etretinate 피부과 영역에서 증식성 질환인 건선 , 어린선 , 여드름 치료 6)

특히 각질화 , 세포증식 염증 및 면역조절에 효과 6)

임신 기간중 섭취시 선천적 결함을 유발 7)

반감기 2 개월체내 완전 제거 2년

Acitretin Etretinate 와 비슷한 효과로 Etretinate 의 대사체 물질 6)

알콜섭취시 체내에서 재에스테르화 되어 Etretinate 로 변환 6)

임신 기간중 섭취시 선천적 결함을 유발 7)

반감기 2~4 일지방친화도가 적어 빠르게 제거

ATRATretinoin /

All trans retinoic acid 급성전골수성 백혈병 [acute promyelocytic leukemia] 치료

9-cisRAalitretinoin

카포시 육종 (kaposi’s sarcoma) 만성 손 습진 (Chronic Hand Eczema) 치료 1-8)

포도당 자극에 의한 인슐린 분비 (glucose-stimulated insulin secretion) 조절 1-3,6,9)

13-cisRAIsotretinoin

피부과 영역에서 증식성 질환인 건선 치료 1-7)

소아에서의 신경아세포종 [neuroblastoma] 치료 1-7)

임신 기간중 섭취 시 선천적 결함을 유발 7)

Acitretin 보다 체내에서 빠르게 제거체내 완전제거 2개월

Retinoic acid and Acitretin Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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SummaryRetinoic acid and Acitretin

• Acitretin 및 Isotretinoin 은 건선 및 여드름 치료제로 특히 청소년기 여성 및 가임기 여성에게 많이 처방되는 약제이다 .

• Acitretin 및 Isotretinoin 임산부에게는 투여하지 말아야 하는 약물이며 , 투여시 태아결손 및 기형 장애등 출산과 관련된 부작용이 있다 .

• Acitretin 및 Isotretinoin 의 반감기는 각각 49 시간 및 6~36 시간 정도이고 완전히 제거되기 위해서는 2 개월 정도 소요된다 . 그러나 반감기 및 완전히 제거되는 시간은 사람마다 조금씩 다를수 있으며 더 오래 남아있을수 있다는 보고가 있다 .

• 또한 , Acitretin 의 경우 알콜을 섭취 할 경우 Etretinate 로 Esterification 될 수 있으며 Etretinate

의 경우 훨씬 긴 반감기를 가진다 .

• Retinoid 제제를 사용한 임산부의 경우 위와 같은 이유로 출산에 대한 불안감이 커지며 복용 시기 및 복용 양만으로는 체내 농도를 정확히 예측하기 어렵다 .

• 이에 체내 농도 분석 Data 를 통해 정확한 수치를 활용하여 약물 상담에 활용한다 .

Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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Retinoids and PregnancyDetermination of Isotretinoin and Acitretin in Pregnany

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A selective and sensitive detection of multiple retinoids and acitretin in human serum with LC-MS/MS

Chemical infoMarker CAS No. Formula Mw (g/mol) T1/2 Purchase 용량 /Price

Protein binding

Etretinate 54350-48-0 C23H30O3 354.48 120 days USP 20mg/1,280,000 >99%

Acitretin 55079-83-9 C21H26O3 326.43 49 h Sigma-Aldrich/ USP 200mg/966,000 >99.9%

ATRATretinoin /

All trans retinoic acid302-79-4 C20H28O2 300.44 0.5-2 h Sigma-Aldrich

/ USP 5x30mg/431,000 >95%

9-cisRAalitretinoin

5300-03-8 C20H28O2 300.44 2-10 h Sigma 1mg/111,000Highly bound, no exact figure

available

13-cisRAIsotretinoin

4759-48-2 C20H28O2 300.44 10-20 h Sigma-Aldrich/ USP 200mg/410,000 >99%

+ Internal Standard

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A selective and sensitive detection of multiple retinoids and acitretin in human serum with LC-MS/MS

InstrumentMarker 장비 참고 논문 목표

Etretinate

LC-UV

Evaluation of the transfusion safety of blood products and deter-mination of plasma concentrations of acitretin and etretinate in patients receiving transfusions (2008)

LC-MS/MS통합분석

A fully validated HPLC method for the simultaneous determination of acitretin and etretinate in plasma and its application to a phar-macokinetic study in healthy Korean subjects (2009)

AcitretinPregnancy outcome of women transfused during pregnancy with blood products inadvertently obtained from donors treated with acitretin (2009)

Acitretin-contaminated blood products and pregnancy (2009)

ATRATretinoin /

All trans retinoic acid

LC-MS/MS

A sensitive and specifi c method for measurement ofmultiple retinoids in human serum with UHPLC-MS/MS (2012)

Validation of a Liquid Chromatography-ElectrosprayIonization-Tandem Mass Spectrometry Method forDetermination of All-Trans Retinoic Acid in Human Plasmaand Its Application to a Bioequivalence Study (2014)9-cisRA

alitretinoin

High Throughput LC-MS/MS Method for Simultaneous Estimation of 9-Cis-Retinoic Acid and its Metabolite 4-Oxo-9-Cis-Retinoic Acid in Human Plasma and its Application to a Bioequivalence Study (2015)

13-cisRAIsotretinoin DETERMINATION AND OCCURRENCE OF RETINOIC ACIDS AND

THEIR 4-OXO METABOLITES IN LIAODONG BAY, CHINA, AND ITS ADJACENT RIVERS (2010)

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A selective and sensitive detection of multiple retinoids and acitretin in human serum with LC-MS/MS

InstrumentLC System Agilent 1290 UHPLC ACQUITY UPLC H-Class system

Column ACQUITY BEH C18 1.7㎛ (2.1X50mm) 검토Mobile Phase

(Isocratic/Gradient) 40:60 A/B

분석법 개발Mobile Phase A 5mM Ammonium AcetateMobile Phase B 0.1% Formic acid in DW

Injection Volume 10㎕Column Temperature 40℃Weak Needle Wash 50:50 methanol/water (600 μL)Strong Needle Wash 50:50 methanol/water (600 μL)

Seal Wash 10:90 acetonitrile/waterFlow Rate 0.2 ml/min

LC condition : Liquid chromatography 조건

MS System TQD 현 장비 사용Ionization Mode Positive Electrospray 검토

Source Temperature 150 °C

분석법 개발Desolvation Temperature 350 °C

Desolvation Gas Flow: 800 L/HrCone Gas Flow 30 L/Hr

Collision Gas Flow 0.20 mL/MinData Management MassLynx™ v4.1

MS/MS condition : Mass spectrometry 조건

Compound MRM Cone (V) CID (eV)Etretinate 353.5>???.? 분석법 개발 분석법 개발Acitretin 325.2>266.2 분석법 개발 분석법 개발13-cisRA 299.2>118.9 분석법 개발 분석법 개발

MRM Transition and LC/MS/MS parameter : Multiple Reaction Monitoring (MRM) 조건

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A selective and sensitive detection of multiple retinoids and acitretin in human serum with LC-MS/MS

Method Sample Preparation 개발1) 추출용매 및 용량 (추출 Rack 및 Tube)2) IS 분주 방법 및 용량3) 추출 및 Incubator 조건 (00min, 0000rpm)4) 건조 조건 및 방법 (00℃, 00min)5) 재용해 용매 조건 설정 (Mobile phase 등 )6) 그 외 Filter 및 SPE (Solid Phase Extrac-

tion) 사용 조건

분석법 검증

PPTProtein Precipitation

LLELiquid/Liquid Extrac-tion

Plasma 200ul + MeOH 200ul+ Acetic acid 20ul(Include IS)

Chloroform 500ul

Centrifuge for 1min

Upper solution transfer (400ul)

Dty for 15min

Reconstitution (MeOH 100ul)

MS analysis

VortexVortex

Vortex

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A selective and sensitive detection of multiple retinoids and acitretin in human serum with LC-MS/MS

OptionChemicalEtretinate

Acitretin

ATRATretinoin /

All trans retinoic acid

9-cisRAalitretinoin

13-cisRAIsotretinoin

+αoxo 대사체류

ChemicalEtretinate

Acitretin

ATRATretinoin /

All trans retinoic acid

9-cisRAalitretinoin

13-cisRAIsotretinoin

ChemicalEtretinate

Acitretin

13-cisRAIsotretinoin

ChemicalAcitretin

13-cisRAIsotretinoin

분석법 절차 분석 시간 분석 비용

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A selective and sensitive detection of multiple retinoids and acitretin in human serum with LC-MS/MS

Summary1. 분석법 검토 – 현재 장비로 분석 가능성 검토

• 분석논문 검토• 추출법 및 장비 설정 검토2. 분석 물질 선정• 분석물질 선정• Internal standard 선정3. 분석법 개발• 추출법 검토 및 개발• 분석 장비 조건 검토 및 개발4. 분석법 검증• 선택성 (selectivity)• 생체시료 효과 (Matrix effect)• 캐리오버 (CarryOver)• 최저 정량한계 (lower limit of quantification, LLOQ)• 검량선 (calibration curve)• 정확성 (accuracy)• 정밀성 (precision)• 회수율 (recovery)5. 연구 활용

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Determination of Isotretinoin and Acitretin in Pregnancy