Effects of chronic nicotine exposure on contractile enzyme-histochemical and biochemical properties of fast- and slow-twitch skeletal muscles in the rat

1988 ◽  
Vol 134 (4) ◽  
pp. 519-527 ◽  
Author(s):  
L. LARSSON ◽  
J. ÖRLANDER ◽  
T. ANSVED ◽  
L. EDSTRÖM
Keyword(s):  
Skeletal Muscles ◽  
Biochemical Properties ◽  
Nicotine Exposure ◽  
Chronic Nicotine ◽  
Slow Twitch

scholarly journals Systematic Review of Nicotine Exposure’s Effects on Neural Stem and Progenitor Cells

2021 ◽  
Vol 11 (2) ◽  
pp. 172
Author(s):  
Arrin C. Brooks ◽  
Brandon J. Henderson
Keyword(s):  
Stem Cells ◽  
Neural Stem Cells ◽  
Inverse Correlation ◽  
Hippocampal Neurogenesis ◽  
Nicotine Exposure ◽  
Negative Consequences ◽  
Postnatal Neurogenesis ◽  
Cognitive Behaviors ◽  
Chronic Nicotine ◽  
Stem And Progenitor Cells

While various modalities of chronic nicotine use have been associated with numerous negative consequences to human health, one possible benefit of nicotine exposure has been uncovered. The discovery of an inverse correlation between smoking and Parkinson’s disease, and later Alzheimer’s disease as well, motivated investigation of nicotine as a neuroprotective agent. Some studies have demonstrated that nicotine elicits improvements in cognitive function. The hippocampus, along with the subventricular zone (SVZ), is a distinct brain region that allow for ongoing postnatal neurogenesis throughout adulthood and plays a major role in certain cognitive behaviors like learning and memory. Therefore, one hypothesis underlying nicotine-induced neuroprotection is possible effects on neural stem cells and neural precursor cells. On the other hand, nicotine withdrawal frequently leads to cognitive impairments, particularly in hippocampal-dependent behaviors, possibly suggesting an impairment of hippocampal neurogenesis with nicotine exposure. This review discusses the current body of evidence on nicotine’s effects on neural stem cells and neural progenitors. Changes in neural stem cell proliferation, survival, intracellular dynamics, and differentiation following acute and chronic nicotine exposure are examined.

scholarly journals Chronic Nicotine Exposure Abolishes Maternal Systemic and Renal Adaptations to Pregnancy in Rats

PLoS ONE ◽  
2016 ◽  
Vol 11 (2) ◽  
pp. e0150096 ◽  
Author(s):  
Vanessa Meira Ferreira ◽  
Clevia Santos Passos ◽  
Edgar Maquigussa ◽  
Roberto Braz Pontes ◽  
Cassia Toledo Bergamaschi ◽  
...  
Keyword(s):  
Nicotine Exposure ◽  
Chronic Nicotine

scholarly journals Sex differences in anxiety-like behavior and locomotor activity following chronic nicotine exposure in mice

2008 ◽  
Vol 439 (2) ◽  
pp. 187-191 ◽  
Author(s):  
Barbara J. Caldarone ◽  
Sarah L. King ◽  
Marina R. Picciotto
Keyword(s):  
Sex Differences ◽  
Locomotor Activity ◽  
Nicotine Exposure ◽  
Chronic Nicotine

Increased lipoprotein lipase activity of skeletal muscle in cold-acclimated rats

1977 ◽  
Vol 55 (12) ◽  
pp. 1241-1243 ◽  
Author(s):  
N. Bégin-Heick ◽  
H. M. C. Heick
Keyword(s):  
Skeletal Muscle ◽  
Cold Acclimation ◽  
Lipoprotein Lipase ◽  
Lipase Activity ◽  
Skeletal Muscles ◽  
Lipoprotein Lipase Activity ◽  
Slow Twitch ◽  
Respiratory Movements ◽  
Parallel Fashion

The activity of lipoprotein lipase (LPL) in the heart, diaphragm, and soleus muscles was markedly increased in cold-acclimated rats and it was even greater in rats treated with oxytetracycline (OTC) while exposed to cold. Other skeletal muscles studied had low and variable activities which were not significantly increased by cold acclimation or by cold plus OTC treatment. It appears therefore that, apart from the heart and the muscles involved in respiratory movements, LPL activity is primarily associated with those muscles which contain a predominance of slow-twitch oxidative fibers, and that the enzyme in muscle, heart, and diaphragm responds to cold acclimation and cold plus OTC treatment in a parallel fashion in these tissues.

scholarly journals B-PO04-010 THE EFFECT OF CHRONIC NICOTINE EXPOSURE ON CARDIAC ELECTROPHYSIOLOGY IN THE RABBIT HEART

Heart Rhythm ◽  
2021 ◽  
Vol 18 (8) ◽  
pp. S283-S284
Author(s):  
Amanda Guevara ◽  
Zhen Wang ◽  
Jessica L. Caldwell ◽  
Srinu Tapa ◽  
Lena Ngo ◽  
...  
Keyword(s):  
Cardiac Electrophysiology ◽  
Rabbit Heart ◽  
Nicotine Exposure ◽  
Chronic Nicotine

Glutamine synthetase induction by glucocorticoids is preserved in skeletal muscle of aged rats

1996 ◽  
Vol 271 (6) ◽  
pp. E1061-E1066 ◽  
Author(s):  
D. Meynial-Denis ◽  
M. Mignon ◽  
A. Miri ◽  
J. Imbert ◽  
E. Aurousseau ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Glutamine Synthetase ◽  
Skeletal Muscles ◽  
Female Rats ◽  
Mrna Levels ◽  
Aged Rats ◽  
Adult Rats ◽  
Adult Age ◽  
Slow Twitch ◽  
Fast Twitch

Glutamine synthetase (GS) is a glucocorticoid-inducible enzyme that has a key role for glutamine synthesis in muscle. We hypothesized that the glucocorticoid induction of GS could be altered in aged rats, because alterations in the responsiveness of some genes to glucocorticoids were reported in aging. We compared the glucocorticoid-induced GS in fast-twitch and slow-twitch skeletal muscles (tibialis anterior and soleus, respectively) and heart from adult (age 6-8 mo) and aged (age 22 mo) female rats. All animals received dexamethasone (Dex) in their drinking water (0.77 +/- 0.10 and 0.80 +/- 0.08 mg/day per adult and aged rat, respectively) for 5 days. Dex caused an increase in both GS activity and GS mRNA in fast-twitch and slow-twitch skeletal muscles from adult and aged rats. In contrast, Dex increased GS activity in heart of adult rats, without any concomitant change in GS mRNA levels. Furthermore, Dex did not affect GS activity in aged heart. Thus the responsiveness of GS to an excess of glucocorticoids is preserved in skeletal muscle but not in heart from aged animals.

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