フォンタン循環における血行動態パラメータと腸内細菌叢の関連:横断研究
Saviga Sethasathien1, Chanon Kunasol2,3, Suchaya Silvilairat1
1Division of Pediatric Cardiology, Department of Pediatrics, Faculty of Medicine Chiang Mai University Chiang Mai Thailand.
Journal of the American Heart Association
|February 11, 2026
まとめ
フォンタン手術患者は腸内細菌叢異常を示し、その変化した微生物プロファイルは血行動態圧および肝臓の状態と関連している。これらの所見は、フォンタン循環における健康に影響を与える血行動態-腸-肝臓軸を示唆している。
科学分野:
- 心血管生理学
- マイクロバイオーム研究
- 消化器病学
背景:
- フォンタン手術は、複雑な先天性心疾患に対する姑息的処置であり、慢性的な血行動態の変化、特に中心静脈圧亢進を引き起こす。
- これらの血行動態の変化は、腸内細菌叢異常の一因となると仮定されている。
研究 の 目的:
- フォンタン手術を受けた個人と健康な対照群の間で腸内細菌叢プロファイルを比較する。
- フォンタン患者におけるカテーテル測定された血行動態パラメータ、肝機能、および腸内微生物の変化との関連を調査する。
主な方法:
- 23人のフォンタン患者と23人の適合した健康な対照群を対象とした横断研究。
- すべての参加者から糞便サンプルを採取し、腸内細菌叢分析を実施。
- 微生物群集を特徴付けるために16S rRNA遺伝子配列解析を用いた。
主要な成果:
- フォンタン患者は、対照群と比較して、微生物の均等性の低下とβ多様性の変化を特徴とする有意な腸内細菌叢異常を示した。
- フォンタン患者は、炎症関連細菌の存在量が増加し、有益な短鎖脂肪酸産生属のレベルが低下した。
- 肺動脈圧およびフォンタン回路圧の上昇、ならびに肺横断勾配の増大は、微生物多様性の低下および有益な分類群の枯渇と相関していた。血清アルブミン値が高いほど、肝臓の状態が良好で、微生物プロファイルも良好であった。
結論:
- フォンタン患者は、血行動態および肝臓の負担に関連する特有の腸内細菌叢の乱れパターンを示す。
- 循環うっ血、肝臓の関与、および腸内細菌叢異常の間には段階的な関連が存在し、フォンタン生理学における血行動態-腸-肝臓軸を支持する。
- 特定の細菌分類群は、フォンタン患者のリスク層別化および治療指針のための潜在的なバイオマーカーとして役立つ可能性がある。
関連する概念動画
Cross-Sectional Research
12.7K
In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
12.7K
Finding Volume Using Cross-Sectional Area
96
For solids whose cross-sectional areas vary in a predictable way, volume can be determined by integrating these areas along an axis perpendicular to the slices. This approach is particularly useful for polyhedral solids, where classical geometric formulas may not be immediately applicable. A tetrahedron provides a clear example of how cross-sectional integration can be applied to a three-dimensional object with continuously changing geometry.Consider a tetrahedron with height h and a base that...
96
Profile Leveling and Cross Sections
1.7K
Profile leveling and cross-sections are surveying methods used to determine and document terrain elevations for infrastructure projects such as highways, railroads, canals, and pipelines. These methods provide data for earthwork planning and alignment of proposed routes. Profile leveling involves measuring elevations along a fixed line to create a vertical terrain profile. A surveyor sets up a leveling instrument at the benchmark (BM) and records a backsight (BS) to determine the...
1.7K
Spinal Cord: Cross-sectional Anatomy
4.9K
The cross-sectional anatomy of the spinal cord offers a detailed view of its complex structure and function within the central nervous system. At the core of the spinal cord lies the gray matter, characterized by its butterfly or "H"-shaped appearance in cross-section. This central region is enveloped by white matter, with the overall structure divided into symmetrical halves by the dorsal median sulcus and the ventral median fissure.
Gray Matter and its Components
Central to the gray matter is...
Gray Matter and its Components
Central to the gray matter is...
4.9K
Genome-wide Association Studies-GWAS
15.8K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
15.8K
Crossing Over
172.3K
Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process...
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process...
172.3K


