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技術(shù)文章

大鼠雌二醇 ELISA試劑盒說(shuō)明書(shū)

閱讀:1157發(fā)布時(shí)間:2011-8-26

大鼠雌二醇 ELISA試劑盒說(shuō)明書(shū)

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                Rat Estradiol ELISA Kit

 

                             Catalog No. CSB-E05110r

 

                                           (96T)

 

     This   immunoassay   kit   allows   for   the   in   vitro   quantitative   determination   of  rat   Estradiol

 

     concentrations in serum, plasma and other biological fluids.

 

     Expiration date    six months from the date of manufacture

 

     FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC PROCEDURES.

 

                               CUSABIO BIOTECH CO., LTD.

 

                      /   /

 

                     : cusabio@    cusabio@

 

                                              1


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INTRODUCTION

 

Estradiol (E2 or 17β-estradiol) (also oestradiol) is a sex hormone. During

 

the    reproductive     years,   most    estradiol    in  women      is produced      by   the

 

granulosa   cells   of   the   ovaries   by   the   aromatization   of   androstenedione

 

(produced in the theca folliculi cells) to estrone, followed by conversion

 

of estrone to estradiol by 17β-hydroxysteroid reductase. Smaller amounts

 

of estradiol are also produced by the adrenal cortex, and (in men), by the

 

testes.    Estradiol    is  not  only    produced     in  the   gonads:     in  both   sexes,

 

precursor       hormones,       specifically      testosterone,      are   converted        by

 

aromatization   to   estradiol.   In   particular,   fat   cells   are   active   to   convert

 

precursors to estradiol, and will continue to do so even after menopause.

 

Estradiol   is   also   produced   in   the   brain   and   in   arterial   walls.   Estradiol

 

enters   cells   freely   and   interacts   with   a   cytoplasmic   target   cell   receptor.

 

When the estrogen receptor has bound its ligand it can enter the nucleus

 

of    the   target   cell,   and   regulate     gene    transcription     which     leads   to

 

formation   of   messenger   RNA.   The   mRNA  interacts   with   ribosomes   to

 

produce   specific   proteins   that   express   the   effect   of   estradiol   upon   the

 

target cell. Estradiol binds well to both estrogen receptors, ERα and ERβ,

 

in    contrast     to   certain    other     estrogens,     notably     medications       that

 

preferentially act on one of these receptors. These medications are called

 

selective estrogen receptor modulators, or SERMs.

 

                                              2


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PRINCIPLE OF THE ASSAY

 

The   microtiter   plate   provided   in   this   kit   has   been  pre-coated   with   an

 

goat-anti-rabbit   antibody.   Standards   or   samples   are   then   added   to   the

 

appropriate   microtiter   plate   wells   with   a   HRP-conjugated   Estradiol   and

 

antibody  preparation  specific  for   Estradiol   and  incubated.  Then   a   TMB

 

(3,3',5,5' tetramethyl-benzidine) substrate solution is added to each well.

 

The     enzyme-substrate      reaction    is  terminated    by   the  addition    of   a

 

sulphuric      acid    solution     and     the    color    change      is   measured

 

spectrophotometrically        at  a   wavelength     of   450   nm    ± 2    nm.   The

 

concentration      of   Estradiol    in  the   samples    is  then    determined     by

 

comparing the O.D. of the samples to the standard curve.

 

DETECTION RANGE

 

20   pg/ml-1000   pg/ml.   The   standard   curve   concentrations   used   for   the

 

ELISA’s were 1000 pg/ml, 500 pg/ml, 200 pg/ml, 60 pg/ml, 20 pg/ml.

 

SPECIFICITY

 

This    assay    recognizes     recombinant      and   natural    rat  Estradiol.   No

 

significant cross-reactivity or interference was observed.

 

                                           3


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SENSITIVITY

 

The   minimum   detectable   dose   of   rat   Estradiol   is   typically   less   than   5

 

pg/ml.

 

The   sensitivity   of   this   assay,   or   Lower   Limit   of   Detection   (LLD)   was

 

defined   as   the   lowest   protein   concentration   that   could   be   differentiated

 

from zero.

 

MATERIALS PROVIDED

 

              Reagent                                   Quantity

 

              Assay plate                               1  (96T)

 

              Standards (S1-S5)                              5

 

              HRP-conjugate                               1 x 6ml

 

              Antibody                                    1 x 6 ml

 

                                                         1 x 15 ml

              Wash Buffer

                                                      (20×concentrate)

 

              Substrate A                                 1 x 7ml

 

              Substrate B                                1 x 7 ml

 

              Stop Solution                              1 x 7 ml

 

   Standard      Standard 1    Standard 2    Standard 3   Standard 4    Standard 5

 

Concentration

                   20pg/ml       60pg/ml      200pg/ml     500pg/ml      1000pg/ml

    (pg/ml)

 

                                         4


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STORAGE

 

1.  Unopened   test   kits   should   be   stored   at   2-8°C   upon   receipt   and   the

 

    microtiter   plate   should   be   kept   in   a   sealed   bag   with   desiccants   to

 

    minimize exposure to damp air. The test kit may be used throughout

 

    the   expiration     date  of   the  kit.  Refer   to  the  package     label   for  the

 

    expiration date.

 

2.  Opened   test   kits   will   remain   stable   until   the   expiring   date   shown,

 

    provided it is stored as prescribed above.

 

3.  A  microtiter   plate   reader   with   a   bandwidth   of   10 nm  or   less   and   an

 

    optical   density   range   of   0-3   OD   or   greater   at   450nm  wavelength   is

 

    acceptable for use in absorbance measurement.

 

TECHNICAL HINTS

 

1.  Bring     all  reagents    and   plate  to   room    temperature     for   at  least  30

 

    minutes     before    use.   Unused     wells   need   store   at  2-8  ℃and      avoid

 

    sunlight.

 

2.  Wash   Buffer         If   crystals   have   formed   in   the   concentrate,   warm   to

 

    room  temperature   and   mix   gently  until   the   crystals  have   compley

 

    dissolved. Dilute 15 ml of Wash Buffer Concentrate into deionized or

 

    distilled water to prepare 300 ml of Wash Buffer.

 

                                             5


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 3. To avoid cross-contamination, change pipette tips between additions

 

    of    each   standard     level,  between      sample    additions,    and    between

 

    reagent additions. Also, use separate reservoirs for each reagent.

 

 4. When   using   an   automated   plate   washer,   adding   a   30   second   soak

 

    period following the addition of wash buffer, and/or rotating the plate

 

    180 degrees between wash steps may improve assay precision.

 

 5. To   ensure   accurate   results,   proper   adhesion   of   plate   sealers   during

 

    incubation steps is necessary. Sealers can not be reused.

 

 6. Substrate   Solution   should   remain   colorless   until   added   to   the   plate.

 

    Keep     Substrate     Solution    protected    from    light.  Substrate    Solution

 

    should change from colorless to gradations of blue.

 

 7. Stop   Solution   should  be   added to   the plate   in   the same   order as   the

 

    Substrate   Solution.   The   color   developed   in   the   wells   will   turn   from

 

    blue   to   yellow   upon   addition   of   the   Stop   Solution.  Wells   that   are

 

    green     in   color   indicate    that   the   Stop   Solution     has  not    mixed

 

    thoroughly with the Substrate Solution.

 

Precaution: The Stop Solution provided with this kit is an acid solution. Wear eye,

 

              hand, face, and clothing protection when using this material.

 

                                             6


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OTHER SUPPLIES REQUIRED

 

  Microplate reader capable of measuring absorbance at 450 nm, with

 

    the correction wavelength set at 540 nm or 570 nm.

 

  Pipettes and pipette tips.

 

  Deionized or distilled water.

 

  Squirt bottle, manifold dispenser, or automated microplate washer.

 

SAMPLE COLLECTION AND STORAGE

 

    Serum      Use a serum separator tube (SST) and allow samples to clot

 

    for   30   minutes   before   centrifugation   for   15   minutes   at   1000   x   g.

 

    Remove serum and assay immediay or aliquot and store samples at

 

    -20° C. Avoid repeated freeze-thaw cycles.

 

    Plasma      Collect    plasma    using   citrate,  EDTA,    or  heparin   as  an

 

    anticoagulant.     Centrifuge    for  15  minutes   at  1000   x g   within   30

 

    minutes     of   collection.  Assay    immediay     or   aliquot  and   store

 

    samples at -20° C. Avoid repeated freeze-thaw cycles.

 

Note: Grossly hemolyzed samples are not suitable for use in this assay.

 

ASSAY PROCEDURE

 

Bring all reagents and samples to room temperature before use. It is recommended

 

that all samples, standards, and controls be assayed in duplicate.

 

                                          7


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1.   Set   a   Blank   well  without    any   solution.   Add   50l    of   Standard   or

 

     Sample per well. Standard need test in duplicate.

 

2.  Add 50l of HRP-conjugate to each well (not to Blank well), then

 

     50l antibody to each well. Mix well and then incubate for 2 hours at

 

     37°C.

 

3.   Fill each well with Wash Buffer (about 200l), stay for 10 seconds

 

     and    Spinning.    Repeat     the  process    for   a  total  of   three   washes.

 

     Complete      removal     of   liquid   at  each   step   is  essential    to  good

 

    performance. After the last wash, remove any remaining Wash Buffer

 

    by aspirating or decanting. Invert the plate and blot it against clean

 

    paper towels.

 

4.  Add 50l of  Substrate   A and  Substrate  B   to   each   well,  mix   well.

 

     Incubate for 15 minutes at 37°C. Keeping the plate away from drafts

 

     and other temperature fluctuations in the dark.

 

5.  Add   50l   of  Stop   Solution  to   each   well.   If   color   change   does   not

 

     appear uniform, gently tap the plate to ensure thorough mixing.

 

6.   Determine the optical density of each well within 10 minutes, using a

 

    microplate reader set to 450 nm.

 

                                            8


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CALCULATION OF RESULTS

 

Average the duplicate readings for each standard, Blank, and sample and

 

subtract the optical density of Blank. Create a standard curve by reducing

 

the data using computer software capable of generating a four parameter

 

logistic (4-PL) curve-fit. As an alternative, construct a standard curve by

 

plotting the mean absorbance for each standard on the y-axis against the

 

concentration on the x-axis and draw a best fit curve through the points

 

on   the   graph.   The   data   may   be   linearized   by   plotting   the   log   of   the

 

Estradiol concentrations versus the log of the O.D. and the best fit line

 

can be determined by regression analysis. This procedure will produce an

 

adequate but less precise fit of the data. If samples have been diluted, the

 

concentration   read   from   the   standard   curve   must   be  multiplied   by   the

 

dilution factor.

 

LIMITATIONS OF THE PROCEDURE

 

  The kit should not be used beyond the expiration date on the kit label.

 

  Do       not  mix   or  substitute   reagents   with   those   from   other   lots  or

 

     sources.

 

  It is important that the Calibrator Diluent selected for the standard

 

     curve be consistent with the samples being assayed.

 

                                           9


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  If samples generate values higher than the highest standard, dilute the

 

     samples with the appropriate Calibrator Diluent and repeat the assay.

 

  Any         variation    in   Standard      Diluent,     operator,     pipetting     technique,

 

     washing   technique,   incubation   time   or   temperature,  and   kit   age   can

 

     cause variation in binding.

 

  This assay is designed to eliminate interference by soluble receptors,

 

     binding      proteins,    and    other    factors    present    in   biological     samples.

 

     Until all factors have been tested in the Quantikine Immunoassay, the

 

     possibility of interference cannot be excluded.

 

                                                    

                                                    

 

                                                    

                                                    

 

                                                    

                                                    

 

                                                    

                                                    

 

                                                    

                                                    

 

                                                    

                                                    

 

                                                    

                                                    

 

                                                    

                                                    

 

                                                    

                                                    

 

                                                    

                                                    

 

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                     大鼠大鼠雌二醇雌二醇酶聯(lián)免疫酶聯(lián)免疫試劑盒試劑盒  

                     大鼠大鼠雌二醇雌二醇酶聯(lián)免疫酶聯(lián)免疫試劑盒試劑盒  

 

                              使用說(shuō)明書(shū)使用說(shuō)明書(shū)  

                              使用說(shuō)明書(shū)使用說(shuō)明書(shū)  

 

本試劑盒僅供研究使用本試劑盒僅供研究使用

本試劑盒僅供研究使用本試劑盒僅供研究使用

 

產(chǎn)品編號(hào)產(chǎn)品編號(hào):CSB-E05110r 

產(chǎn)品編號(hào)產(chǎn)品編號(hào)

 

檢測(cè)范圍檢測(cè)范圍::20 pg/ml -1000 pg/ml

檢測(cè)范圍檢測(cè)范圍::

 

特異性特異性::本試劑盒可同時(shí)檢測(cè)天然或重組的雌二醇,且與其他相關(guān)物質(zhì)基本

特異性特異性::

 

無(wú)交叉反應(yīng)。

 

有效期有效期:6 個(gè)月 (2-8℃避光保存)

有效期有效期

 

預(yù)期應(yīng)用預(yù)期應(yīng)用::ELISA 法定量測(cè)定大鼠血清,血漿及其它相關(guān)生物液體中雌二醇

預(yù)期應(yīng)用預(yù)期應(yīng)用::

 

含量。

 

說(shuō)明說(shuō)明

說(shuō)明說(shuō)明

 

1.  濃洗滌液低溫保存會(huì)有鹽析出,稀釋時(shí)可在水浴中加溫助溶。

 

2.  剛開(kāi)啟的酶聯(lián)板孔中可能會(huì)含有少許水樣物質(zhì),此為正常現(xiàn)象,不會(huì)對(duì)實(shí)驗(yàn)

 

    結(jié)果造成任何影響。

 

實(shí)驗(yàn)原理實(shí)驗(yàn)原理

實(shí)驗(yàn)原理實(shí)驗(yàn)原理

 

     采用酶聯(lián)免疫競(jìng)爭(zhēng)法檢測(cè)雌二醇含量。首先用羊抗兔包被微孔板,制備成

 

固相二抗,然后加入待測(cè)標(biāo)本、辣根過(guò)氧化物酶標(biāo)記的雌二醇以及抗雌二醇抗

 

體,使之形成包被二抗-抗雌二醇抗體-雌二醇 (HRP )復(fù)合物。經(jīng)顯色后在酶標(biāo)

 

儀測(cè)定吸光值 (OD 值),通過(guò)計(jì)算機(jī)或作圖擬合濃度-吸光度曲線,反算出待測(cè)

 

標(biāo)本中雌二醇含量。

 

                                      11


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試劑盒組成及試劑配制試劑盒組成及試劑配制

試劑盒組成及試劑配制試劑盒組成及試劑配制

 

1.  酶聯(lián)酶聯(lián)板板(Assay plate ):                                       一塊(96 孔)。

    酶酶聯(lián)聯(lián)板板

2.  標(biāo)準(zhǔn)品標(biāo)準(zhǔn)品 (Standard):                                                  5 瓶。

    標(biāo)準(zhǔn)品標(biāo)準(zhǔn)品

 

  Standard 1       Standard 2      Standard 3       Standard 4     Standard 5

 

    20pg/ml        60pg/ml         200pg/ml         500pg/ml      1000pg/ml

 

3.  酶結(jié)合物酶結(jié)合物 ((HRP-conjugate):)                                    1×6ml/瓶。

    酶結(jié)合物酶結(jié)合物 ((               ))

4.  抗體抗體 ((Antibody ):)                                            1×6ml/瓶。

    抗體抗體 ((         ))

5.  顯色劑顯色劑A  ((Substrate A):                                       1×7ml/瓶。

    顯色劑顯色劑    ((

6.  顯色劑顯色劑B  ((Substrate B):                                       1×7ml/瓶。

    顯色劑顯色劑    ((

7.  濃洗滌液濃洗滌液 ((Wash Buffer ):)    1×15ml/瓶,使用時(shí)每瓶用蒸餾水稀釋20 倍。

    濃洗滌液濃洗滌液 ((            ))

8.  終止液終止液 ((Stop Solution):)                                      1×7ml/瓶。

    終止液終止液 ((            ))

 

需要而未提供的試劑和器材需要而未提供的試劑和器材

需要而未提供的試劑和器材需要而未提供的試劑和器材

 

1.  標(biāo)準(zhǔn)規(guī)格酶標(biāo)儀

 

2.  高速離心機(jī)

 

3.  電熱恒溫培養(yǎng)箱

 

4.  干凈的試管和Eppendof 管

 

5.  系列可調(diào)節(jié)移液器及吸頭,一次檢測(cè)樣品較多時(shí),用多通道移液器

 

6.  蒸餾水,容量瓶等

 

標(biāo)本的采集及保存標(biāo)本的采集及保存

標(biāo)本的采集及保存標(biāo)本的采集及保存

 

1.  血清:全血標(biāo)本請(qǐng)于室溫放置2 小時(shí)或4℃過(guò)夜后于 1000 x g 離心20 分鐘,

 

    取上清即可檢測(cè),或?qū)?biāo)本放于-20℃或-80℃保存,但應(yīng)避免反復(fù)凍融。

 

2. 血漿:可用EDTA 或肝素作為抗凝劑,標(biāo)本采集后30 分鐘內(nèi)于2 - 8° C 1000 

 

    x g 離心 15 分鐘,或?qū)?biāo)本放于-20℃或-80℃保存,但應(yīng)避免反復(fù)凍融。 

 

注:注:以上標(biāo)本置以上標(biāo)本置4℃保存應(yīng)小于℃保存應(yīng)小于 1 周,周,-20℃或℃或-80℃均應(yīng)密封保存℃均應(yīng)密封保存,,-20℃不應(yīng)超過(guò)℃不應(yīng)超過(guò) 1 個(gè)月個(gè)月,,

注注::以上標(biāo)本置以上標(biāo)本置 ℃℃保存應(yīng)小于保存應(yīng)小于  周周,,  ℃℃或或   ℃℃均應(yīng)密封保存均應(yīng)密封保存,,  ℃℃不應(yīng)超過(guò)不應(yīng)超過(guò)  個(gè)月個(gè)月,,

 

-80℃不應(yīng)超過(guò)℃不應(yīng)超過(guò)2 個(gè)月個(gè)月;標(biāo)本溶血會(huì)影響zui后檢測(cè)結(jié)果;標(biāo)本溶血會(huì)影響zui后檢測(cè)結(jié)果,因此溶血標(biāo)本不宜進(jìn)行此項(xiàng)檢測(cè),因此溶血標(biāo)本不宜進(jìn)行此項(xiàng)檢測(cè)。。

   ℃℃不應(yīng)超過(guò)不應(yīng)超過(guò)  個(gè)月個(gè)月;;標(biāo)本溶血會(huì)影響zui后檢測(cè)結(jié)果標(biāo)本溶血會(huì)影響zui后檢測(cè)結(jié)果,,因此溶血標(biāo)本不宜進(jìn)行此項(xiàng)檢測(cè)因此溶血標(biāo)本不宜進(jìn)行此項(xiàng)檢測(cè)。。

 

                                      12


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操作步驟操作步驟

操作步驟操作步驟

 

1.  將各種試劑至室溫 〔18-25℃〕平衡半小時(shí),取濃縮洗滌液,根據(jù)當(dāng)批檢測(cè)

 

    數(shù)量,用蒸餾水上 1:20 稀釋,混勻后備用。

 

2.  將酶標(biāo)板取出,設(shè)一個(gè)空白對(duì)照孔、不加任何液體;每個(gè)標(biāo)準(zhǔn)點(diǎn)依次各設(shè)兩

 

    孔,每孔加入相應(yīng)標(biāo)準(zhǔn)品 50ul;其余每個(gè)檢測(cè)孔直接加待測(cè)標(biāo)本50ul。

3.  每孔加入酶結(jié)合物 50ul            (空白對(duì)照孔除外),再按同樣順序每孔加入抗體

 

    50ul,充分混勻,貼上不干膠封片,置37℃溫育2 小時(shí)。

 

4.  手工洗板,棄去孔內(nèi)液體。洗滌液注滿各孔,靜置 10 秒甩干,重復(fù)三次后

 

    拍干;洗板機(jī)洗板,選擇洗滌三次程序,洗板后拍干。

 

5.  每孔加顯色劑 A 液 50 μl,顯色劑B 液 50 μl,振蕩混勻后,37℃避光顯色

 

    15 分鐘,每孔加終止液50 μl。

 

6.  用酶標(biāo)儀讀數(shù),取波長(zhǎng)450nm,先用空白孔調(diào)零點(diǎn),然后測(cè)定各孔OD 值。

 

數(shù)據(jù)處理數(shù)據(jù)處理

數(shù)據(jù)處理數(shù)據(jù)處理

 

1.  手工作圖:用雙對(duì)數(shù)坐標(biāo)紙,以標(biāo)準(zhǔn)品濃度為橫軸,以對(duì)應(yīng)的0D 值為縱軸,

 

    畫(huà)出平滑曲線或直線,在曲線上按照待測(cè)血清OD 值找到對(duì)應(yīng)的濃度值。

 

2.  計(jì)算機(jī):使用線性擬合功能,應(yīng)將標(biāo)準(zhǔn)品S1-S5 的濃度取對(duì)數(shù) (Log(濃度))

 

    作為X,將對(duì)應(yīng)的OD 值減去空白對(duì)照孔 OD 值后取對(duì)數(shù)(Log(OD 值-NSB))

    作為Y,進(jìn)行線性擬合。再?gòu)臄M合線上計(jì)算出待測(cè)血清濃度。

 

注意事項(xiàng)注意事項(xiàng)

注意事項(xiàng)注意事項(xiàng)

 

1.  從冷藏環(huán)境中取出的試劑盒內(nèi)全部瓶裝試劑及所需預(yù)包被板條應(yīng)置室溫

 (18-25℃)平衡30 分鐘后方可使用,余者應(yīng)及時(shí)封好口,放回2-8℃中避光保

 

存,以備后用。

 

2.  使用前試劑應(yīng)搖勻。

 

3.  結(jié)果判斷須在反應(yīng)終止后 10 分鐘內(nèi)完成。

4.  不同批號(hào)的試劑不可混用。

5.  加樣時(shí)應(yīng)注意避免所用各試劑及樣品之間的交又污染。

 

6.  操作時(shí),試劑盒內(nèi)每種試劑各使用一個(gè)吸頭,每一種標(biāo)準(zhǔn)品使用一個(gè)吸頭,

    每一個(gè)樣品各使用一個(gè)吸頭,吸頭一次性使用。

 

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Notes :

 

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廈門慧嘉生物長(zhǎng)期經(jīng)營(yíng)ELISA試劑盒及抗體、細(xì)胞因子、生化試劑、耗材等生物試劑產(chǎn)品。誠(chéng)信經(jīng)營(yíng),價(jià)格實(shí)惠,服務(wù)周到,質(zhì)量有保證。歡迎廣大老師來(lái)詢!:   : 查詢?cè)敿?xì)。

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