Long-Term Exercise Training Selectively Alters Serum Cytokines Involved in Fever

2009 ◽  
Vol 10 (4) ◽  
pp. 374-380 ◽  
Author(s):  
Pamela Johnson Rowsey ◽  
Bonnie L. Metzger ◽  
John Carlson ◽  
Christopher J. Gordon
Keyword(s):  
Exercise Training ◽  
Core Temperature ◽  
Binding Capacity ◽  
Serum Zinc ◽  
Female Rats ◽  
Chronic Exercise ◽  
Serum Cytokines ◽  
Tnf Α ◽  
Running Wheels

Long-term exercise training selectively alters serum cytokines involved in fever. Chronic exercise training has a number of effects on the immune system that may mimic the physiological response to fever. Female rats that voluntarily exercise on running wheels develop an elevated daytime core temperature after several weeks of training. It remains to be seen whether the elevation in daytime temperature involves inflammatory patterns characteristic of an infectious fever. We assessed whether chronic exercise training in the rat would alter levels of cytokines involved in fever. Female Sprague Dawley rats at 45 days of age weighing 90—110 g were divided into two groups (exercise and sedentary) and housed at an ambient temperature of 22°C. Interleukin-1 beta (IL-1β), interleukin-6 (IL-6), interleukin-10 (IL-10), tumor necrosis factor alpha (TNF-α), iron, and zinc levels were analyzed. Rats underwent 8 weeks of exercise on running wheels. Exercise led to altered levels of some key cytokines that are involved in fever. Exercise animals had significantly higher IL-1β levels and lower IL-10 levels compared to sedentary animals. Although IL-6 levels were slightly lower in the exercise animals, these levels were not significantly affected by training. TNF-α activity was similar in the two groups. Training also led to a slight increase in serum zinc and decrease in serum unsaturated iron binding capacity (UIBC). The data suggest that chronic exercise training evokes immune responses that mimic some, but not all, aspects of fever. This may explain why exercise leads to elevated daytime core temperature.

scholarly journals Influence of a Concurrent Exercise Training Intervention during Pregnancy on Maternal and Arterial and Venous Cord Serum Cytokines: The GESTAFIT Project

2019 ◽  
Vol 8 (11) ◽  
pp. 1862 ◽  
Author(s):  
Acosta-Manzano ◽  
Coll-Risco ◽  
Van Poppel ◽  
Segura-Jiménez ◽  
Femia ◽  
...  
Keyword(s):  
Exercise Training ◽  
Pregnant Women ◽  
Exercise Group ◽  
Future Research ◽  
Exercise Interventions ◽  
Cord Serum ◽  
Serum Cytokines ◽  
Tnf Α ◽  
Gestational Week ◽  
Concurrent Exercise

The aim of the present study was to analyze the influence of a supervised concurrent exercise-training program, from the 17th gestational week until delivery, on cytokines in maternal (at 17th and 35th gestational week, and at delivery) and arterial and venous cord serum. Fifty-eight Caucasian pregnant women (age: 33.5 ± 4.7 years old, body mass index: 23.6 ± 4.1kg/m2) from the GESTAFIT Project (exercise (n = 37) and control (n = 21) groups) participated in this quasi-experimental study (per-protocol basis). The exercise group followed a 60-min 3 days/week concurrent (aerobic-resistance) exercise-training from the 17th gestational week to delivery. Maternal and arterial and venous cord serum cytokines (fractalkine, interleukin (IL)–1β, IL-6, IL-8, IL-10, interferon (IFN)–γ, and tumor necrosis factor (TNF)–α) were assessed using Luminex xMAP technology. In maternal serum (after adjusting for the baseline values of cytokines), the exercise group decreased TNF-α (from baseline to 35th week, p = 0.02), and increased less IL-1β (from baseline to delivery, p = 0.03) concentrations than controls. When adjusting for other potential confounders, these differences became non-significant. In cord blood, the exercise group showed reduced arterial IL-6 and venous TNF-α (p = 0.03 and p = 0.001, respectively) and higher concentrations of arterial IL-1β (p = 0.03) compared to controls. The application of concurrent exercise-training programs could be a strategy to modulate immune responses in pregnant women and their fetuses. However, future research is needed to better understand the origin and clearance of these cytokines, their role in the maternal-placental-fetus crosstalk, and the influence of exercise interventions on them.

Benefits of exercise training on cardiovascular dysfunction: molecular and integrative

2018 ◽  
Vol 315 (4) ◽  
pp. H1027-H1031 ◽  
Author(s):  
Irving H. Zucker ◽  
Timothy I. Musch
Keyword(s):  
Exercise Training ◽  
Cardiovascular Disorders ◽  
Chronic Exercise ◽  
Peripheral Vasculature ◽  
Novel Studies ◽  
Beneficial Effects ◽  
Circulatory Physiology ◽  
Genetic Mechanisms ◽  
Intense Research

Exercise training has been shown to ameliorate a wide variety of cardiovascular disorders. The mechanisms by which long-term benefits of exercise training are mediated remains incomplete, despite intense research in this area. Exactly how the act of chronic exercise improves function in every tissue is unknown, but many of the cellular, molecular, and genetic mechanisms are becoming progressively clearer. This “Perspectives” article reviews the contributions of 15 articles published in the American Journal of Physiology-Heart and Circulatory Physiology in response to a Call for Papers in this area. Here, we summarize the contributions of these studies at the cardiac, vascular, immune, and molecular levels. We discuss the translational benefit of these studies and conclude that the beneficial effects of exercise training in cardiovascular disease is due to a large interplay of cellular and molecular mediators in the heart and peripheral vasculature as well as changes in neural elements that regulate blood pressure and blood flow. Readers are encouraged to evaluate and learn from this collection of novel studies.

Effects of body temperature during exercise training on myocardial adaptations

2001 ◽  
Vol 280 (5) ◽  
pp. H2271-H2280 ◽  
Author(s):  
M. Brennan Harris ◽  
Joseph W. Starnes
Keyword(s):  
Antioxidant Enzymes ◽  
Body Temperature ◽  
Exercise Training ◽  
Core Temperature ◽  
Stress Proteins ◽  
Heme Oxygenase 1 ◽  
Chronic Exercise ◽  
Sprague Dawley ◽  
Hsp 70 ◽  
Αb Crystallin

This study determined the role of body temperature during chronic exercise on myocardial stress proteins and antioxidant enzymes as well as functional recovery after an ischemic insult. Male Sprague-Dawley rats were exercised for 3, 6, or 9 wk in a 23°C room (3WK, 6WK, and 9WK, respectively) or in a 4–8°C environment with wetted fur (3WKC, 6WKC, and 9WKC, respectively). The colder room prevented elevations in core temperature. During weeks 3–9 the animals ran 5 days/wk up a 6% grade at 20 m/min for 60 min. Myocardial heat shock protein 70 (HSP 70) increased 12.3-fold ( P < 0.05) in 9WK versus sedentary (SED) rats but was unchanged in the cold-room runners. Compared with SED rats, αB-crystallin was 90% higher in 9WKC animals, HSP 90 was 50% higher in 3WKC and 6WKC animals, and catalase was 23% higher in 3WK animals ( P < 0.05 for all). Cytosolic superoxide dismutase increased and mitochondrial SOD decreased ( P < 0.05) in 3WK and 6WK rats compared with 3WKC and 6WKC rats. Antioxidant enzymes returned to SED values in all runners by 9 wk. No differences were observed among any of the groups for glucose-regulated protein 75, heme oxygenase-1, or glutathione peroxidase. Mechanical recovery of isolated working hearts after 22.5 min of global ischemia was enhanced in 9WK ( P < 0.05) but not in 9WKC rats. We conclude that exercise training results in dynamic changes in cardioprotective proteins over time which are influenced by core temperature. In addition, cardioprotection resulting from chronic exercise appears to be due to increased HSP 70.

Effects of Exercise Conditioning on Thermoregulatory Response to Anticholinesterase Insecticide Toxicity

2001 ◽  
Vol 2 (4) ◽  
pp. 267-276 ◽  
Author(s):  
Pamela J. Rowsey ◽  
Bonnie L. Metzger ◽  
Christopher J. Gordon
Keyword(s):  
Exercise Training ◽  
Corn Oil ◽  
Exercise Group ◽  
Chronic Exercise ◽  
Thermoregulatory Response ◽  
Sprague Dawley ◽  
Organophosphate Insecticide ◽  
Sprague Dawley Rats ◽  
Running Wheels ◽  
Fever Response

Chronic exercise conditioning has been shown to alter basal thermoregulatory processes (change in thermoregulatory set point) as well as the response to infectious fever. Chlorpyrifos (CHP), an organophosphate insecticide, also affects thermoregulation, causing an acute period of hypothermia followed by a delayed fever. This study examined whether chronic exercise training in the rat alters the thermoregulatory response to CHP. Core temperature and motor activity were monitored by radiotelemetry in female Sprague-Dawley rats housed individually at an ambient temperature of 22 °C. The rats were either given continuous access to running wheels or housed in standard cages without wheels. The exercise group ran predominately at night. After 8 weeks, the rats were gavaged with corn oil or 15 mg/kg CHP. CHP induced a transient hypothermic response followed by a delayed fever, beginning 1 day after exposure. Relative to controls, Tc decreases were not significantly different between the exercise (1.6 °C) group and the sedentary (0.5 °C) group given CHP. The sedentary and exercise group administered CHP developed a fever the day after CHP treatment. The fever response was greater in the sedentary group and persisted for approximately 3 days postinjection. Fever of the exercise group persisted for just one-half of 1 day after CHP. It is well known that chronic exercise training improves aerobic capacity; however, trained rats were not protected from the hypothermic effects of CHP. Training did ameliorate the febrile effects of CHP. Thus, exercise training may afford protection to the toxic effects of organophosphate insecticides.

Enlargement of glycogen store in rat liver and muscle by fructose-diet intake and exercise training

1997 ◽  
Vol 82 (3) ◽  
pp. 772-775 ◽  
Author(s):  
Taro Murakami ◽  
Yoshiharu Shimomura ◽  
Noriaki Fujitsuka ◽  
Masahiro Sokabe ◽  
Koji Okamura ◽  
...  
Keyword(s):  
Exercise Training ◽  
Rat Liver ◽  
Glycogen Content ◽  
Control Diet ◽  
Treadmill Running ◽  
Female Rats ◽  
Glycogen Store ◽  
Diet And Exercise ◽  
Diet Intake

Murakami, Taro, Yoshiharu Shimomura, Noriaki Fujitsuka, Masahiro Sokabe, Koji Okamura, and Shuichi Sakamoto. Enlargement of glycogen store in rat liver and muscle by fructose-diet intake and exercise training. J. Appl. Physiol.82(3): 772–775, 1997.—This study investigated the effect of long-term intake of a fructose diet and exercise training on glycogen content in liver and skeletal muscle in female rats. Thirty-six rats (8 wk old) were divided into two dietary groups and were fed with a control (chow) diet or fructose diet (containing 20% fructose) for 12 wk. During this period, one-half of the rats in each dietary group were trained by using a motor-driven treadmill (running speed of 25 m/min and duration of 90 min/day, 5 days/wk). The liver glycogen was increased by intake of a fructose diet and exercise training, and the content was in the following order: control-diet and sedentary rats < fructose-diet and sedentary rats ≤ control-diet and trained rats < fructose-diet and trained rats in the ratio of 1:3.4:3.6:5.0. The glycogen content in gastrocnemius muscle showed the same trend as that in liver; the ratio was 1:1.3:1.3:1.6. These results indicate that both long-term intake of the fructose diet and exercise training synergistically increased glycogen in both tissues.

The role of exercise in thermogenesis and energy balance

1989 ◽  
Vol 67 (4) ◽  
pp. 402-409 ◽  
Author(s):  
Denis Richard ◽  
Serge Rivest
Keyword(s):  
Energy Balance ◽  
Food Intake ◽  
Energy Expenditure ◽  
Exercise Training ◽  
Female Rats ◽  
Male Rats ◽  
Brown Adipose ◽  
Term Energy

The role of exercise training in energy balance has been reviewed. Recent well-conducted studies showed that exercise may increase energy expenditure not only during the period of exercise itself but during the postexercise period as well. This notion of excess postexercise oxygen consumption (EPOC), which has been a controversial issue for many years, is now becoming a generally well-accepted concept, the consensus being that EPOC takes place following prolonged and strenuous exercise bouts. Besides, the role of EPOC in long-term energy balance remains to be determined. Long-term energy balance studies carried out in rats show that exercise affects energy balance by altering food intake and promoting energy expenditure. In male rats exercise causes a marked decrease in energy intake which contributes, in association with the expenditure of exercise itself, to retard lean and fat tissue growth. From the suppressed deposition of lean body mass, decreases in basal metabolic rate can be predicted in males. In female rats, exercise does not affect food intake; the lower energy gain of exercise-trained females results from the elevated expenditure rate associated with exercise itself. In both male and female rats, there is no evidence that exercise training affects energy expenditure other than during exercise itself unless the habitual feeding pattern of the rats is radically modified. The interactive effects of diet and exercise, which have to be further investigated in long-term energy balance, emerge as a promising area of research.Key words: exercise training, nutritional energetics, brown adipose tissue, diet-induced thermogenesis, body composition.

Herpesvirus infection as one of the causes of anemia

2019 ◽  
Vol 24 (2) ◽  
pp. 161-166 ◽  
Author(s):  
О. A. Uspenskaya ◽  
S. A. Spiridonova
Keyword(s):  
Chronic Disease ◽  
Viral Infection ◽  
Binding Capacity ◽  
Herpesvirus Infection ◽  
Hemoglobin Content ◽  
Anemia Of Chronic Disease ◽  
Tnf Α ◽  
Iron Binding Capacity ◽  
Timely Treatment ◽  
Average Hemoglobin

Relevance. One of the causes of chronic disease is herpetic infection, lifelong persistence in the human body and activates the macrophage protection system, which leads to disruption of iron utilization by the cells of the hematopoietic system and the development of anemia of chronic disease. To prove the influence of herpesvirus infection on the occurrence of anemia of chronic disease.Materials and methods. The study involved 75 people suffering from herpes-viral infection. 3 groups were allocated: the frst group (25 people) received acyclovir 1 tablet (200 mg) 5 times a day, 5 days; The 2-nd group (25 people) used famvir for 1 tablet (250 mg) 2 times a day, 5 days; The third group (25 people) – famvir 1 tablet (250 mg) 2 times a day, 5 days and kagocel 2 tablets (12 mg) 3 times a day, 5 days.Result. All subjects examined at the time of treatment showed an increase in the content of IL 1β mRNK and TNF-α and a decrease in mRNK of IL 8 and IL 10; on day 14 of the study, a decrease in IL 1β mRNK and TNF-α mRNK and an increase in IL 10 mRNK. In the study of erythrocyte indices – the average volume of erythrocytes and the average hemoglobin content in erythrocyte and the parameters of iron-serum iron metabolism and the total iron binding capacity of the serum, slight deviations from the norm were obtained.Conclusions. Thus, we concluded that the cause of anemia, in addition to the lack of iron, can be chronic herpesvirus infection, and thus timely treatment of a viral infection excludes the use of ferrotherapy.

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