Related Experiment Video
Updated: Jan 23, 2026
07:35
Isolation of Primary Rat Hepatocytes with Multiparameter Perfusion Control
Published on: April 5, 2021
5.6K
Relationship between Cooling Medium and Hepatocyte Ploidometric Parameters in Albino Rats.
I P Bobrov1, A V Lepilov2, A Yu Dolgatov2
1Altai State Medical University, Ministry of Health of Russia, Barnaul, Russia. pathol@inbox.ru.
Bulletin of Experimental Biology and Medicine
|June 26, 2019
Summary
Deep hypothermia severely damages rat livers, increasing hepatocyte alteration and promoting high-ploid cells for adaptation. Moderate hypothermia causes less damage, with liver regeneration favoring normal cell populations.
Area of Science:
- Hepatology
- Cell Biology
- Physiology
Background:
- Hypothermia is used therapeutically but can cause cellular damage.
- Understanding the impact of different cooling methods on liver regeneration is crucial.
Purpose of the Study:
- To investigate the relationship between hypothermic exposure methods and rat hepatocyte nuclear ploidy.
- To analyze liver cell alterations and adaptive responses following deep and moderate hypothermia.
Main Methods:
- Rats were subjected to deep hypothermia (5°C water immersion) or moderate hypothermia (-25°C air exposure).
- Hepatocyte nuclei ploidy and alteration indices were assessed immediately after exposure and during a 14-day posthypothermic period.
Main Results:
- Deep hypothermia caused significant hepatocyte alteration (81-fold increase) and a shift towards high-ploid nuclei (5c-8c, 60% population), indicating intense adaptation.
- Moderate hypothermia resulted in less severe alteration (19-fold increase) and a regenerative pattern favoring normal 2c and 4c hepatocytes (51% population) by day 14.
Conclusions:
- The method of hypothermia significantly influences the liver's response and regeneration strategy.
- Deep hypothermia induces a robust, high-ploidy adaptive response, while moderate hypothermia promotes recovery of the normal cell population.
Related Concept Videos
02:44Heating and Cooling Curves
27.3K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
27.3K
02:12Relationship Formation
45.2K
What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
45.2K
01:28Ending Relationships
175
The dissolution of intimate relationships presents complex emotional and psychological challenges, particularly when emotional bonds are strong, the relationship is long-standing, and perceived alternatives are limited. This distress often intensifies in romantic breakups, where the initiator may experience greater turmoil than the rejected partner. Contributing factors include residual attachment, guilt over causing pain, and uncertainty about how to manage the situation. The stress is further...
175
01:27Relationship Growth
210
Interpersonal relationships progress through stages, beginning with awareness and moving toward mutuality, where emotional connections deepen. While many relationships remain at moderate levels of mutuality, deeper connections form through self-disclosure, trust, and interdependence.Self-DisclosureSelf-disclosure involves revealing personal information, starting with surface-level details and gradually progressing to more intimate content. As trust grows, individuals feel more comfortable...
210
01:30Social Relationships and Well-Being
268
The significance of social relationships in psychological well-being is a well-established area of inquiry within social psychology. Research consistently demonstrates that the presence of meaningful, supportive relationships enhances emotional health, while the absence or deterioration of such connections can contribute to psychological distress. Relationships serve as a foundation for emotional support, identity, and social belonging, all of which are critical to an individual’s overall...
268
01:10Wave Parameters
9.1K
The simplest mechanical waves are associated with simple harmonic motion and repeat themselves for several cycles. These simple harmonic waves can be modeled using a combination of sine and cosine functions. Consider a simplified surface water wave that moves across the water's surface. Unlike complex ocean waves, in surface water waves, water moves vertically, oscillating up and down, whereas the disturbance of the wave moves horizontally through the medium. If a seagull is floating on the...
9.1K