scholarly journals Effects of anti-inflammatory drugs on fever and neutrophilia induced byClostridium difficiletoxin B

1996 ◽  
Vol 5 (3) ◽  
pp. 183-187 ◽  
Author(s):  
R. A. Cardoso ◽  
A. A. Melo Filho ◽  
M. C. C. Melo ◽  
D. M. Lyerly ◽  
T. D. Wilkins ◽  
...  
Keyword(s):  
Body Temperature ◽  
Clostridium Difficile ◽  
Intravenous Injection ◽  
Febrile Response ◽  
Toxin B ◽  
Inflammatory Drugs ◽  
Anti Inflammatory ◽  
Dose Dependent Increase ◽  
Dose Dependent

This study investigated the ability ofClostridium difficiletoxin B, isolated from the VPI 10463 strain, to induce fever and neutrophilia in rats. Intravenous injection of toxin B (0.005–0.5 μg/kg) evoked a dose-dependent increase in body temperature. The febrile response to 0.5 μg/kg of the toxin started in 2.5 h, peaked at 5 h, and subsided fully within 24 h. Toxin B also induced a dosedependent neutrophilia. Pretreatment with indomethacin (2 mg/kg, i.p.) did not affect the neutrophilia induced by toxin B, but significantly reduced the febrile response measured 4 to 8 h after toxin B injection. Dexamethasone (0.5 mg/ kg) also markedly diminished the febrile response induced by toxin B. These results show thatClostridium difficiletoxin B induced a febrile response susceptible to inhibition by dexamethasone and indomethacin. Furthermore, they suggest that prostaglandins are not involved in the neutrophilia caused by this toxin.

Indomethacin blocks the febrile response induced by interleukin-8 in rabbits

1995 ◽  
Vol 269 (6) ◽  
pp. R1469-R1474 ◽  
Author(s):  
A. R. Zampronio ◽  
C. A. Silva ◽  
F. Q. Cunha ◽  
S. H. Ferreira ◽  
I. R. Pela ◽  
...  
Keyword(s):  
Body Temperature ◽  
Intravenous Injection ◽  
Interleukin 8 ◽  
Intracerebroventricular Injection ◽  
Febrile Response ◽  
Limulus Amoebocyte Lysate ◽  
Intracerebroventricular Injections ◽  
Dose Dependent Increase ◽  
Dose Dependent ◽  
Pyrogenic Activity

Interleukin (IL)-8 induces fever in rats by a mechanism independent of the release of cyclooxygenase products. The purpose of this study was to investigate whether a similar mechanism is responsible for the pyrogenic effect of IL-8 in rabbits. Intravenous (0.31-5.0 ng/kg) or intracerebroventricular (15.6-250 pg) injections of IL-8 induced a dose-dependent increase in body temperature. The correlations between the doses of recombinant human IL-8 and the fever index were 0.98 and 0.99 for the intravenous and intracerebroventricular injections, respectively. The pyrogenic activity of IL-8 was not due to contamination with lipopolysaccharide (LPS), inasmuch as the Limulus amoebocyte lysate test showed < 10 pg endotoxin/micrograms IL-8, and boiled IL-8 lost its pyrogenic activity. Indomethacin (2 and 5 mg/kg i.p.) abolished the febrile response induced by the intravenous injection of LPS (5.0 ng/kg), IL-1 beta (5 ng/kg), and IL-8 (5 ng/kg). Indomethacin also abolished the fever induced by the intracerebroventricular injection of IL-8 (62.5 pg) but only partially reduced the response induced by the injection of IL-1 beta (25 pg icv). These results show that, different from rats, indomethacin blocks the febrile response induced by the central or peripheral administration of IL-8 in rabbits.

LH-RH TEST IN 100 PATIENTS WITH OVARIAN INSUFFICIENCY

1974 ◽  
Vol 75 (3) ◽  
pp. 428-434 ◽  
Author(s):  
P.-J. Czygan ◽  
M. Breckwoldt ◽  
F. Lehmann ◽  
R. Langefeld ◽  
G. Bettendorf
Keyword(s):  
Intravenous Injection ◽  
Functional State ◽  
Clear Correlation ◽  
Normal Range ◽  
Ovarian Insufficiency ◽  
Lh Rh ◽  
Dose Dependent Increase ◽  
Dose Dependent

ABSTRACT The effect of synthetic LH-RH was studied in 100 patients with various types of ovarian insufficiency by following up the FSH- and LH-levels in plasma. LH-RH was administered in doses of 12.5, 25 and 100 μg as a rapid intravenous injection. The patients were classified according to the endocrine state of the pituitary as evidenced by the urinary gonadotrophin levels. A clear correlation between the functional state of the pituitary and its responsiveness to exogenous LH-RH was demonstrated. Most of the patients with undetectable low urinary gonadotrophin levels failed to respond. The majority of patients with gonadotrophin excretion in the normal range and those with elevated levels reacted with a dose dependent increase in circulating LH. The amount of liberated FSH however was related to the injected dose only in patients with high gonadotrophic excretion. The present study indicates that synthetic LH-RH provides a useful tool in the evaluation of the pitutiary function particularly in patients with low and with undetectable gonadotrophin excretion. The data presented in this paper also demonstrate that the functional state of the pituitary is clearly reflected by the urinary gonadotrophin levels.

scholarly journals Sleep-promoting effects of endogenous pyrogen (interleukin-1)

1984 ◽  
Vol 246 (6) ◽  
pp. R994-R999 ◽  
Author(s):  
J. M. Krueger ◽  
J. Walter ◽  
C. A. Dinarello ◽  
S. M. Wolff ◽  
L. Chedid
Keyword(s):  
Body Temperature ◽  
Intravenous Injection ◽  
Slow Wave ◽  
Slow Wave Sleep ◽  
Interleukin 1 ◽  
Cerebral Ventricles ◽  
Endogenous Pyrogen ◽  
Temperature Heating ◽  
Dose Dependent ◽  
Pyrogenic Activity

When infused into the lateral cerebral ventricles of rabbits, human endogenous pyrogen (EP) preparations induced dose-dependent increases in slow-wave sleep concomitant with increasing body temperature. Heating EP to 70 degrees C destroyed its sleep-promoting and pyrogenic activity. Anisomycin (an antipyretic) prevented EP from increasing body temperature without affecting its sleep-promoting activity. Intravenous injection of EP induced fever and transient increases in slow-wave sleep but failed to induce prolonged increases in slow-wave sleep. We conclude that the somnogenic activity of EP is not secondary to its pyrogenic activity.

scholarly journals Dose-dependent roles of aspirin and other non-steroidal anti-inflammatory drugs in abnormal bone remodeling and skeletal regeneration

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Yong Xie ◽  
Meng Pan ◽  
Yanpan Gao ◽  
Licheng Zhang ◽  
Wei Ge ◽  
...  
Keyword(s):  
Bone Formation ◽  
Bone Remodeling ◽  
Low Dose ◽  
High Dose ◽  
Dose Aspirin ◽  
Low Dose Aspirin ◽  
Inflammatory Drugs ◽  
Anti Inflammatory ◽  
Dose Dependent ◽  
High Dose Aspirin

AbstractThe failure of remodeling process that constantly regenerates effete, aged bone is highly associated with bone nonunion and degenerative bone diseases. Numerous studies have demonstrated that aspirin and other non-steroidal anti-inflammatory drugs (NSAIDs) activate cytokines and mediators on osteoclasts, osteoblasts and their constituent progenitor cells located around the remodeling area. These cells contribute to a complex metabolic scenario, resulting in degradative or synthetic functions for bone mineral tissues. The spatiotemporal effects of aspirin and NSAIDs in the bone remodeling are controversial according the specific therapeutic doses used for different clinical conditions. Herein, we review in vitro, in vivo, and clinical studies on the dose-dependent roles of aspirin and NSAIDs in bone remodeling. Our results show that low-dose aspirin (< 100 μg/mL), which is widely recommended for prevention of thrombosis, is very likely to be benefit for maintaining bone mass and qualities by activation of osteoblastic bone formation and inhibition of osteoclast activities via cyclooxygenase-independent manner. While, the roles of high-dose aspirin (150–300 μg/mL) and other NSAIDs in bone self-regeneration and fracture-healing process are difficult to elucidate owing to their dual effects on osteoclast activity and bone formation of osteoblast. In conclusion, this study highlighted the potential clinical applications of low-dose aspirin in abnormal bone remodeling as well as the risks of high-dose aspirin and other NSAIDs for relieving pain and anti-inflammation in fractures and orthopedic operations.

Body temperature response to IL-1 beta in pregnant rats

1995 ◽  
Vol 269 (5) ◽  
pp. R1179-R1182 ◽  
Author(s):  
R. L. Simrose ◽  
J. E. Fewell
Keyword(s):  
Body Temperature ◽  
Intravenous Injection ◽  
Interleukin 1 ◽  
Temperature Response ◽  
Sprague Dawley ◽  
Endogenous Pyrogen ◽  
Febrile Response ◽  
Pregnant Rats ◽  
Sprague Dawley Rats ◽  
Near Term

Rats have an attenuated or absent febrile response to exogenous pyrogen (e.g., bacterial endotoxin) near term of pregnancy. With the aim of providing insight into possible mechanism(s) of the altered febrile response to exogenous pyrogen, experiments have been carried out on 67 time-bred Sprague-Dawley rats to investigate the febrile response to endogenous pyrogen [i.e., interleukin-1 beta (IL-1 beta)]. On day 13 of gestation, intravenous injection of IL-1 beta produced a significant increase in body temperature with a latency of approximately 30 min and a duration of approximately 120 min. In contrast, on days 17 and 21 of gestation as well as on the day of delivery, intravenous injection of IL-1 beta produced significant decreases in body temperature. Thus rats do not develop fever in response to endogenous pyrogen near term of pregnancy but rather become hypothermic. The mechanism of the altered body temperature response to exogenous pyrogen as pregnancy proceeds remains unknown. We speculate, however, that it most likely lies downstream from the formation of endogenous pyrogen.

scholarly journals Evaluation of anti-inflammatory activity of Jasminum sessiliflorum extracts

2019 ◽  
Vol 10 (3) ◽  
pp. 2515-2518
Author(s):  
Ruby Philip ◽  
Kathiresan Krishnasamy ◽  
Elessy Abraham
Keyword(s):  
Medicinal Plants ◽  
Adverse Effects ◽  
Ethyl Acetate ◽  
Inflammatory Activity ◽  
Paw Edema ◽  
Reference Drug ◽  
Inflammatory Drugs ◽  
Anti Inflammatory ◽  
Dose Dependent ◽  
Ethyl Acetate Extracts

Medicinal plants are important resources for the development of novel anti-inflammatory agents. Synthetic anti-inflammatory drugs have several adverse effects. Medicinal plants have numerous that are safer well as better substitutes for the prevention and management of various diseases and disorders. The and ethyl acetate extracts of Jasminum were evaluated for their potential as anti-inflammatory agents in by inducing paw edema in rats using . The anti-inflammatory activity of the reference drug was compared with the extracts of Jasminum . The extracts on screening indicated the presence of such as , , , alkaloids, and . The study established significant anti-inflammatory nature of the Jasminum extracts in a manner which is dose-dependent. The results indicate that both the extracts of Jasminum possess anti-inflammatory activity of significance and can be used in the development for novel anti-inflammatory moieties.

Nonsteroidal anti-inflammatory drugs alter body temperature and suppress melatonin in humans

1996 ◽  
Vol 59 (1) ◽  
pp. 133-139 ◽  
Author(s):  
Patricia J. Murphy ◽  
Bryan L. Myers ◽  
Pietro Badia
Keyword(s):  
Body Temperature ◽  
Inflammatory Drugs ◽  
Anti Inflammatory
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