ELISA INHIBITION ASSAY FOR THE QUANTITATION OF ANTIGENIC PROTEIN IN NATURAL RUBBER LATEX

2002 ◽  
Vol 23 (3) ◽  
pp. 261-278 ◽  
Author(s):  
Vesna J. Tomazic-Jezic ◽  
Michael R. Woolhiser ◽  
Donald H. Beezhold
2005 ◽  
Vol 58 (6) ◽  
pp. 461 ◽  
Author(s):  
Kathireson Vivaygananthan ◽  
Pin-Fa Lai ◽  
Seng-Neon Gan ◽  
Christopher M. Fellows ◽  
Robert G. Gilbert

The free radical polymerization of dimethylaminoethyl methacrylate (DMAEMA) on the surface of particles in natural rubber latex (NRL) was carried out using an iron(ii)/tetraethylenepentamine (TEPA) redox couple initiation system, which results in significant grafting of poly(DMAEMA) to the surface of the particles. Because poly(DMAEMA) functions as an electrosteric stabilizer, this leads to increased colloidal stability, which suggests that the proteinaceous material which normally provides the colloidal stability in NRL can be displaced. This opens the way to preparing barrier products of low allergenicity, because the allergic response from NRL products arises from this proteinaceous material. Dipped and cast films were prepared from the modified NRL and were shown to be of low allergenicity using the IgE-ELISA inhibition assay. Vulcanized films prepared from the modified latex were also found to be of low allergenicity compared to a compounded film of unmodified NRL prepared under similar conditions. The barrier integrity, tensile strength, and elongation at break values of vulcanized films prepared from the modified latex were also equivalent to the unmodified film, and their water sensitivity and ageing characteristics were not significantly different. This suggests that this modified NRL can be used as an effective low-allergy latex for personal barrier products such as surgical gloves.


Allergy ◽  
1998 ◽  
Vol 53 (1) ◽  
pp. 59-67 ◽  
Author(s):  
T. Palosuo ◽  
S. Mäkinen-Kiljunen ◽  
H. Alenius ◽  
T. Reunala ◽  
E. Yip ◽  
...  

2016 ◽  
Vol 80 (2) ◽  
Author(s):  
. Siswanto

AbstrakLateks karet alam banyak digunakan untuk produksi peralatan medis, industri dan rumah tangga. Reaksi alergi yang disebabkan oleh protein asal lateks telah banyak dilaporkan terutama berkaitan dengan penggunaan sarung tangan asal karet alam. Namun tidak semua jenis protein dari karet alam bisamenyebabkan alergi. Penelitian ini dilakukan untuk mendeteksi jenis protein antigenik yang berasal dari karet alam menggunakan teknik imunobloting. Protein diekstrak dari tiga fraksi sentrifugasi lateks (serum B sebagai fraksi dasar, serum C atau serum sitosolik sebagai fase tengah dan partikel karet sebagai fase atas) dan tujuh jenis sarung tangan komersial, kemudian dipisahkan berdasarkan berat molekulnya melalui Gel elektroforesis 1-D (SDS PAGE) dan 2-D. Selanjutnya untuk deteksi protein antigenik secara immuno-chemiluminescense dilakukan imunobloting menggunakan IgG antibodi poliklonal anti protein lateks dari kelinci putih New Zealand dan diwarnai dengan Sypro Ruby protein blot fluorescence. Hasil imunobloting menunjukkan bahwa tidak semua protein serum C dan serum B bersifat antigenik. Terdapat lebih dari 14 spot protein antigenik yang terdeteksi dari serum C pada posisi pI antara pH 4,2 s/d pH 6,8, serta lebih dari 16 spot protein antigenik yang terdeteksi pada serum B dengan pI antara pH 5,5 s/d pH 7,0. Protein yang bersifat antigenik dalam serum C a.l: dengan BM 43 kDa diduga Hev b 7,01, BM 22 kDa adalah Hev b 3 dan BM 15 kDa adalah Hev b 8. Sedangkan protein antigenik dalam serum B dengan BM 42 kDa diduga adalah Hev b 10, dan BM 39 kDa adalah Hev b 2. Protein yang bersifat antigenik pada sarung tangan yang terdeteksi dengan IgG kelinci anti serum-C antara lain Hev b 5 dengan BM 14 kDa, Hev b 1 (BM 10 kDa), Hev b 6.03 (BM 18 dan 19 kDa), dan Hev b9 (BM 55 kDa). Sedangkan yang terdeteksi dengan antibodi IgG anti serum B antara lain Hev b 6.02 dengan BM 7 kDa, serta Hev b 10 (BM 46 kDa) dan Hev b9 (BM 55 kDa). AbstractNatural rubber latex is widely used for the production of medical, industrial and household devices. Allergic reactions caused by latex proteins have been reported primarily related with the use of natural rubber gloves. However, not all types of proteins from natural rubber can cause allergies. This study was conducted to detect the type of antigenic proteins derived from natural rubber with immunobloting techniques. Proteins were extracted from three fractions of latex centrifugation (Bserum as bottom fractions, C-serum or cytosolic serum asmiddle phase and rubber particles as upper phase) and seven types of commercial gloves, then separated by molecular weight through 1-D gel electrophoresis (SDS PAGE) and 2-D. Detection of antigenic protein byimmuno-chemiluminescense, was performed by immunoblotting using polyclonal antibody IgG anti-protein latex from New Zealand white rabbits and stained withSypro Ruby protein blot fluorescence. Immunobloting results indicate that not all proteins from C-serum and Bserum were antigenic. More than 14 antigenic protein spots were detected in the samples of C-serum at pI between pH 4.2 to pH 6.8, and more than 16 antigenic protein spots were detected in the samples of B-serum at pI between pH 5.5 to pH 7.0. Antigenic proteins detected in C-serum were MW 43 kDa suspected as Hev b 7:01, MW 22 kDa was Hev b 3 and MW 15 kDa was Hev b 8. While the antigenic protein detected in B-serumwith MW 42 kDa was suspected as Hev b 10, and protein with MW 39 kDa was Hev b 2. Antigenic proteins detected on the rubber gloves with rabbit IgG anti-Cserum were Hev b 5 with MW 14 kDa, Hev b 1 (MW 10 kDa), Hev b 6:03 (MW 18 and 19 kDa), and Hev b9 (MW 55 kDa). Whereas antigenic protein of rubbergloves detected with IgG anti-B serum were Hev b 6:02 with MW 7 kDa, and Hev b 10 (46 kDa) and Hev b9 (MW 55 kDa).


2016 ◽  
Vol 80 (2) ◽  
Author(s):  
. Siswanto

AbstrakLateks karet alam banyak digunakan untuk produksi peralatan medis, industri dan rumah tangga. Reaksi alergi yang disebabkan oleh protein asal lateks telah banyak dilaporkan terutama berkaitan dengan penggunaan sarung tangan asal karet alam. Namun tidak semua jenis protein dari karet alam bisamenyebabkan alergi. Penelitian ini dilakukan untuk mendeteksi jenis protein antigenik yang berasal dari karet alam menggunakan teknik imunobloting. Protein diekstrak dari tiga fraksi sentrifugasi lateks (serum B sebagai fraksi dasar, serum C atau serum sitosolik sebagai fase tengah dan partikel karet sebagai fase atas) dan tujuh jenis sarung tangan komersial, kemudian dipisahkan berdasarkan berat molekulnya melalui Gel elektroforesis 1-D (SDS PAGE) dan 2-D. Selanjutnya untuk deteksi protein antigenik secara immuno-chemiluminescense dilakukan imunobloting menggunakan IgG antibodi poliklonal anti protein lateks dari kelinci putih New Zealand dan diwarnai dengan Sypro Ruby protein blot fluorescence. Hasil imunobloting menunjukkan bahwa tidak semua protein serum C dan serum B bersifat antigenik. Terdapat lebih dari 14 spot protein antigenik yang terdeteksi dari serum C pada posisi pI antara pH 4,2 s/d pH 6,8, serta lebih dari 16 spot protein antigenik yang terdeteksi pada serum B dengan pI antara pH 5,5 s/d pH 7,0. Protein yang bersifat antigenik dalam serum C a.l: dengan BM 43 kDa diduga Hev b 7,01, BM 22 kDa adalah Hev b 3 dan BM 15 kDa adalah Hev b 8. Sedangkan protein antigenik dalam serum B dengan BM 42 kDa diduga adalah Hev b 10, dan BM 39 kDa adalah Hev b 2. Protein yang bersifat antigenik pada sarung tangan yang terdeteksi dengan IgG kelinci anti serum-C antara lain Hev b 5 dengan BM 14 kDa, Hev b 1 (BM 10 kDa), Hev b 6.03 (BM 18 dan 19 kDa), dan Hev b9 (BM 55 kDa). Sedangkan yang terdeteksi dengan antibodi IgG anti serum B antara lain Hev b 6.02 dengan BM 7 kDa, serta Hev b 10 (BM 46 kDa) dan Hev b9 (BM 55 kDa). AbstractNatural rubber latex is widely used for the production of medical, industrial and household devices. Allergic reactions caused by latex proteins have been reported primarily related with the use of natural rubber gloves. However, not all types of proteins from natural rubber can cause allergies. This study was conducted to detect the type of antigenic proteins derived from natural rubber with immunobloting techniques. Proteins were extracted from three fractions of latex centrifugation (Bserum as bottom fractions, C-serum or cytosolic serum asmiddle phase and rubber particles as upper phase) and seven types of commercial gloves, then separated by molecular weight through 1-D gel electrophoresis (SDS PAGE) and 2-D. Detection of antigenic protein byimmuno-chemiluminescense, was performed by immunoblotting using polyclonal antibody IgG anti-protein latex from New Zealand white rabbits and stained withSypro Ruby protein blot fluorescence. Immunobloting results indicate that not all proteins from C-serum and Bserum were antigenic. More than 14 antigenic protein spots were detected in the samples of C-serum at pI between pH 4.2 to pH 6.8, and more than 16 antigenic protein spots were detected in the samples of B-serum at pI between pH 5.5 to pH 7.0. Antigenic proteins detected in C-serum were MW 43 kDa suspected as Hev b 7:01, MW 22 kDa was Hev b 3 and MW 15 kDa was Hev b 8. While the antigenic protein detected in B-serumwith MW 42 kDa was suspected as Hev b 10, and protein with MW 39 kDa was Hev b 2. Antigenic proteins detected on the rubber gloves with rabbit IgG anti-Cserum were Hev b 5 with MW 14 kDa, Hev b 1 (MW 10 kDa), Hev b 6:03 (MW 18 and 19 kDa), and Hev b9 (MW 55 kDa). Whereas antigenic protein of rubbergloves detected with IgG anti-B serum were Hev b 6:02 with MW 7 kDa, and Hev b 10 (46 kDa) and Hev b9 (MW 55 kDa).


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