カウンティ別のがん:病因学的手がかりのための新しいリソース
まとめ
癌の死亡率の地図は,原因に関連した地理的なパターンを明らかにします. 男性の膀がんは,工業的な曝露から生じる可能性があるが,胃がんのクラスターは,民族的要因を示唆している.
科学分野:
- エピデミオロジー エピデミオロジー
- 環境衛生 環境衛生 環境衛生
- がん研究 がん研究
背景:
- 癌による死亡率の地理的変動は,環境的または遺伝的リスク要因を暗示する可能性があります.
- これらのパターンを理解することは,標的を絞った公衆衛生の介入と病因学的研究にとって極めて重要です.
研究 の 目的:
- 重要な地理的パターンを特定するために,米国の郡レベルの癌死亡率データを分析する.
- 観察された癌死亡率のクラスターに関連した潜在的な産業および民族的決定因子を調査する.
主な方法:
- 米国における郡レベルの癌死亡率データを活用した.
- 高い癌率の地理的クラスターを特定するために空間分析を行いました.
- 特定されたパターンは,既知の産業活動や人口統計/民族データと相関関係にある.
主要な成果:
- 米国各郡における癌による死亡率の明確な地理的パターンを特定した.
- 男性の膀がん死亡率は,化学,自動車,機械製造分野との相関関係を示した.
- 両性における胃がん死亡率のクラスターは,民族的感受性のパターンと一致していた.
結論:
- 癌による死亡率のマッピングは,潜在的な病因的な関連を持つ重要な地理的格差を強調しています.
- 産業,特に製造業での曝露は,男性の膀がんの潜在的決定因子である.
- 民族的背景は,胃がんの地理的分布に役割を果たす可能性があります.
関連する概念動画
Cancer
Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
What is Cancer?
Cells and tissues must meticulously coordinate their activities for the normal functioning of the human body. Therefore, they exhibit socially responsible behavior - resting, growing, dividing, differentiating, or dying - for the organism’s benefit. Cancer arises when cells divide uncontrollably and invade other tissues or organs.
Although people have known about cancer for centuries, it was only in 1761 that Giovanni Morgagni of Padua performed a detailed autopsy of patients who died from...
Although people have known about cancer for centuries, it was only in 1761 that Giovanni Morgagni of Padua performed a detailed autopsy of patients who died from...
Cancers Originate from Somatic Mutations in a Single Cell
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...

