相关实验视频

Updated: Jan 31, 2026

RNA Secondary Structure Prediction Using High-throughput SHAPE

RNA Secondary Structure Prediction Using High-throughput SHAPE

Published on: May 31, 2013

糖毒素的风险是由Gambierdiscus社区结构所塑造的

Kirsty F Smith¹, Lesley L Rhodes¹, Belinda Curley²

¹Cawthron Institute, Nelson, New Zealand.

|January 29, 2026

概括

罕见的Gambierdiscus恐龙,不是总的丰度,与鱼类中ciguatoxin (CTX) 水平相关. 这一发现有助于绘制ciguatera中毒风险图,这是气候变化加剧的日益严重的公共卫生威胁.

科学领域:

海洋微生物学和毒理学
有害藻类繁殖的生态学
气候变化对公共卫生的影响.

背景情况:

由甘比迪斯克/福克亚恐龙产生的西瓜托克辛 (CTXs) 在人类中引起西瓜特拉中毒 (CP).
鱼类中的CTX水平非常可变,很难从化学上识别.
预计气候变化将加剧CP的公共卫生影响.

研究的目的:

在一个关键的特有地区调查特定Gambierdiscus物种,CTX存在和CP风险之间的关系.
确定可靠的指标来绘制特定地点的CP风险.
了解罕见的Gambierdiscus物种在CTX生产中的作用.

主要方法:

结合深度元编码与定量PCR,用于检测Dinoflagellates和哨兵鱼 (Ctenochaetus striatus) 中的CTX.
利用神经母细胞瘤细胞测定和液体染色学-双重质谱仪进行CTX分析.
评估dinoflagellate的α-多样性和相关物种的存在与CTX度.

主要成果:

确定了9种甘比尔迪斯克/福库约亚物种,代表了从一个地点报告的最高多样性.
哨兵鱼中的CTX (P-CTX3B) 度与罕见物种Gambierdiscus polynesiensis的存在有关,而不是总体的Gambierdiscus丰度或鱼的年龄/大小.
只有G. polynesiensis菌株在新分离的Gambierdiscus中产生可检测的P-CTX.

结论:

罕见的Gambierdiscus物种,特别是G. polynesiensis,是CTX存在和潜在的CP风险的关键指标.
哨兵鱼和罕见的恐龙鞭状体测绘可以有效地识别CP的高风险区域.
这种方法为管理气候变化加剧的公共卫生威胁提供了有价值的工具.

更多相关视频

Using In Vitro and In-cell SHAPE to Investigate Small Molecule Induced Pre-mRNA Structural Changes

Using In Vitro and In-cell SHAPE to Investigate Small Molecule Induced Pre-mRNA Structural Changes

Published on: January 30, 2019

Three-Dimensional Shape Modeling and Analysis of Brain Structures

Three-Dimensional Shape Modeling and Analysis of Brain Structures

Published on: November 14, 2019

相关概念视频

What are Populations and Communities?

What are Populations and Communities?

Molecular Shapes

Molecular Shapes

Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.
Two regions of electron density in a diatomic...

VSEPR Theory and the Basic Shapes

VSEPR Theory and the Basic Shapes

Overview of VSEPR Theory

Molecular Shape and Polarity

Molecular Shape and Polarity

Dipole Moment of a Molecule

Relative Risk

Relative Risk

Relative risk (RR) is a statistical measure commonly used in epidemiology to compare the likelihood of a particular event occurring between two groups. This metric is important for evaluating the relationship between exposure to a specific risk factor and the probability of a particular outcome. It plays a crucial role in medical research, public health studies, and risk assessment. Relative risk quantifies how much more (or less) likely an event is to occur in an exposed group compared to an...

Community Based Intervention

Community Based Intervention

Community-based interventions in mental health represent a paradigm shift from institution-centered care to treatments embedded within the fabric of local communities. By prioritizing inclusion and leveraging existing societal structures, this approach fosters a supportive environment conducive to addressing mental health challenges while promoting individual dignity and agency.
Foundations of Community Mental Health Programs
Central to the success of community-based interventions is the...