関連する実験動画
Updated: Aug 18, 2026

13:01
Anti-Nuclear Antibody Screening Using HEp-2 Cells
Published on: June 24, 2014
まとめ
B型肝炎の表面抗原血症は,ハワイの多くの日系アメリカ人男性において,一次性肝細胞癌に先行することが判明しました. この研究は,B型肝炎ウイルスと肝臓がんの発症の間の有意な関連性を強調しています.
科学分野:
- 肝臓病理学 肝臓病理学
- 腫瘍学 腫瘍学
- 感染症 感染症は感染症です.
背景:
- 主要肝細胞癌 (PHC) は,世界的な健康上の重大な懸念事項である.
- B型肝炎ウイルス (HBV) 感染はPHCの主要なリスク因子です.
- PHCの発症の初期のマーカーの理解は,予防と早期の介入に不可欠です.
研究 の 目的:
- B型肝炎表面抗原血症と原発性肝細胞癌の発生率との関連を調査する.
- 日本系アメリカ人男性のコホートでPHCの診断に先行するB型肝炎表面抗原陽性かどうかを判断する.
主な方法:
- ハワイの日本人男性7,498人を対象としたコホート研究.
- 13年間の追跡期間中,原発性肝細胞癌の18件の症例を特定しました.
- B型肝炎表面抗原 (HBsAg) の検出のために貯蔵された血清サンプルを症例と対照群で分析.
主要な成果:
- 16人のPHC患者のうち10人 (62.5%) は,元の標本でHBsAgの陽性血清検査結果を示した.
- 48人の対照群のいずれもHBsAgに陽性ではなかった.
- HBsAg陽性性は,PHCの発症と有意に関連していました.
結論:
- B型肝炎の表面抗原血症は,原発性肝細胞癌の有意な予測因子である.
- 血清におけるHBsAgの存在は,多くの個体においてPHCの臨床診断に先行する.
- これらの発見は,PHCの予防のためにHBVスクリーニングとワクチン接種の重要性を強化しています.
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関連する概念動画
Cell-mediated Immune Responses
Overview
Liver Regeneration
The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are large...
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are large...
Antigens Involved in Adaptive Immunity
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Diversity of Antigen Receptors
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Hepatitis
Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...