Hasil Pencarian  ::  Simpan CSV :: Kembali

"The aim of this volume is to summarize current knowledge on the cellular and molecular aspects of the aging immune system, with an emphasis on infectious diseases and new therapeutic approaches."

"This volume highlights the mechanisms leading to immune privilege in tissues and organs, the deviation of immune responses and the modification of the behavior of the immune cells that manage to cross the blood barriers of tissues, in the context of infection."

"ABSTRAKThe existence of chioramphenicol residues in veterinary products could cause such a serious side effect like aplastic anemia. A specific and sensitive ELISA method to detect chioramphenicol residues was needed to be developed in order to get a more efficient and economical analysing method. In this study, a direct ELISA method has been done using chioramphenicol-bovine serum albumin (CAP-BSA) as antigen and antisera chioramphenicol labelled by enzyme horseradish peroxidase (HRP) as antibody. CAP-BSA with a dilution of 1:200 and antisera chioramphenicol labelled by }iRP with a dilution of 1:125 showed a limit detection of 0.05 ng/ml. CAP-BSA had been synthesized from chloramphenicol sodium succinate and BSA, using mixed anhydride reaction, whereas HRP-labelled antisera chloramphenicol had been synthesized from antisera chioramphenicol and FIRP, using periodate conjugation technique. The production of antisera chloramphenicol has been performed through CAP-BSA immunization using two New Zealand White rabbits resulting in antisera chloramphenicol with a less satisfactory specificity and sensitivity. The recovery assay of chloramphemcol in cow milk gave 98,17% ± 2,88% yield.

---

"

"Tuberkulosis (TB) disebabkan oleh infeksi kuman Mycobacterium tuberculosis merupakan satu dari sepuluh penyebab kematian tertinggi di dunia yang dapat dicegah melalui vaksinasi. Vaksin BCG sebagai satu-satunya vaksin TB, memiliki beberapa kekurangan, diantaranya tingkat proteksi yang tidak merata di populasi orang dewasa dan kekhawatiran aplikasinya pada populasi imunokompromais, hal ini mendorong dikembangkannya vaksin TB alternatif. PE11 merupakan protein yang bertanggung jawab dalam rekonstruksi komponen lipid dinding sel M. tuberculosis dan berdasarkan analisis in-siliko diketahui memiliki domain pengenalan terhadap antibodi dan MHC-II. Dalam studi ini, gen pe11 dari M. tuberculosis strain Beijing diinsersikan ke dalam plasmid pcDNA3.1, pcDNA3.1-pe11, yang kemudian diuji kemampuannya dalam menginduksi respon imun humoral dan mediator seluler pada mencit Balb/c sebagai bentuk DNA vaksin. Berdasarkan uji western blot, respon imun humoral berupa IgG spesifik terhadap protein rekombinan PE11-His berhasil dikonfirmasi. Selain itu, mediator imun seluler dari splenosit mencit pasca vaksinasi dan pajanan antigen secara in-vitro menunjukkan adanya peningkatan produksi IL-12, IFN-γ dan IL-4 dibandingkan dengan kelompok kontrol, namun tidak terhadap sitokin IL-10.

---

Tuberculosis (TB) caused by infection bacteria Mycobacterium tuberculosis, one of ten causes of death in the world that can be prevented through vaccination. The BCG vaccine, as the only TB vaccine, has several drawbacks, including an uneven level of protection in adult population and risk application in immunocompromised population, this has led to the development of an alternative TB vaccine. PE11 is a protein that is responsible for the reconstruction of the lipid component of the cell wall of M. tuberculosis and based on in-silico analysis is known to have the recognition domain for antibodies and MHC-II. In this study, the pe11 gene from the Beijing strain of M. tuberculosis was inserted into the plasmid pcDNA3.1, pcDNA3.1-pe11, then tested for its ability to induce humoral immune responses and cellular mediators in Balb/c mice as a form of vaccine DNA. Based on the western blot test, the specific IgG humoral immune response to the recombinant protein PE11-His was confirmed. In addition, cellular immune mediators from post-vaccination mice splenocytes and in-vitro antigen exposure showed increased production of IL-12, IFN-γ and IL-4 compared to the control group, but not to the IL-10 cytokine."

"The immune response of dengue fever/dengue hemorrhagic fever is a series of immunopathogenesis processes starting from viral infection to the target on monocytes and macrophages. It may consequently cause a cascade of viremia in the circulation that stimulates the afferent, efferent, and effector mechanism by the interaction of the humoral and complement system. The cascade results in inflammatory substance that will affect capillary permeability and activate coagulation factors leading to further effects on endothelial level. The mechanism involving pathogenesis of DHF/DSS is still vague. So far, a theory of heterologous infection has been developed, which explains that on second infection, there is subneutralization that induce viral replication. The autoimmune mechanism development leads to the better understanding of DHF. It also explains the autoimmune response of the viral infection, which consists of molecular mimicry, bystander activation and viral persistence. The development of the autoimmune pathomechanism is related to the role of autoantibody and endothelial dysfunction that may have role in worsening DHF.

---

Respons imun pada demam dengue/demam berdarah dengue merupakan suatu rangkaian imunopatogenesis yang dimulai sejak target infeksi virus terhadap monosit dan makrofag. Selanjutnya akan menimbulkan suatu kaskade dari viremia di sirkulasi yang menstimulasi mekanisme aferen, mekanisme eferen dan mekanisme efektor melalui interaksi dengan berbagai sistem humoral dan komplemen. Substansi inflamasi yang dihasilkan akan mempengaruhi permeabilitas kapiler dan mengaktivasi faktor koagulasi serta berpengaruh terhadap kerja tingkat endotel. Mekanisme yang melibatkan patogenesis DBD/DSS masih belum jelas. Selama ini berkembang teori infeksi heterologus infection, dimana pada infeksi kedua kalinya terjadi sub netralisasi yang memicu replikasi virus. Mekanisme autoimun merupakan suatu proses autoimun yang dapat memperkaya kazanah pemahaman DBD. Mekanisme autoimun tersebut, menjelaskan respons autoimun oleh infeksi virus yang terdiri dari molecular mimicry, bystander activation dan viral persistence. Patomekanisme auto imun ini berkembang terkait peranan autoantibodi dan tingkat endotel proses disfungsi yang dimungkinkan berperan terhadap memberatnya DBD"