Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0020672 (hypothermia)
 17,327 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Sickness behavior has become a common expression in the description of general symptoms of diseases and regarded as partly or fully advantageous for the patient to combat infection or other disturbance acting on the body. Several components of sickness behavior such as anorexia, sleepiness and inactivity have significant energetic connotations and hence may affect body mass and/or body temperature. Thermoregulatory accompaniments of sickness behavior could be either fever or hypothermia depending on the nature and severity of disease. A survey of the relevant literature has identified afferent, central and efferent mechanisms that may allow separate or coordinated appearance of behavioral and/or thermoregulatory aspects of these symptoms occurring under different experimental conditions. An attempt has been made to find some biological logic in the appearance of various components of sickness behavior and changes in body temperature that could explain the purported positive value of sickness behavior in disease survival.
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PMID:Sickness behavior in fever and hypothermia. 1535 97

Resorcinol (1,3 benzenediol; m-dihydroxybenzene: resorcin) is a pharmaceutical agent used topically in dermatological treatments such as acne and related skin conditions. It could also be used in combination with the other acne treatment agents such as sulphur. It could be very hazardous if taken orally and there are limited reports on its toxic effects in human. The present work aimed to report a resorcinol poisoning case in which resorcinol was taken accidentally by a woman at 30 weeks of pregnancy. The major clinical findings were unconsciousness, drowsiness, and respiratory failure that required mechanical ventilation along with tonic-clonic seizures and hypothermia. In addition, the laboratory findings were leucocytosis, high bilirubin levels, severe metabolic acidosis, and green-colored urine. The fetus was considered dead 24 h after delivery; however, mother's prognosis was well with supportive management. It could be concluded that the basic approach to the patient with resorcinol poisoning should include the initial stabilization of immediate life-threatening problems and elimination of the toxin. This is the first report on resorcinol poisoning in pregnant women, indicating its major clinical and laboratory findings.
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PMID:The oral toxicity of resorcinol during pregnancy: a case report. 1546 61

Type I interferons (IFNs) include IFNalpha and IFNbeta, both of which are elevated in acute viral infections and both of which have been shown to induce symptoms such as fever and somnolence when administered in pharmacological doses. To investigate the role of type I IFNs in mediation of acute respiratory viral symptoms we examined sleep and body temperature responses in mice with a targeted mutation of the IFN receptor type I (IFN-RI knockouts). IFN-RI knockouts (KOs) or wild-type 129 SvEv controls were challenged intratracheally (IT) with combined poly[rI.rC] (synthetic double-stranded RNA) and IFNgamma, a model that simulates an acute viral infection with respect to body temperature and locomotor activity responses. Control mice of both strains were treated with IT IFNgamma alone. Hypothermic responses to IT poly[rI.rC]/IFNgamma were more exaggerated in the IFN-RI KO mice than in wild-type. The non-rapid eye movement sleep (NREMS) response to IT poly[rI.rC]/IFNgamma was increased earlier in the IFN-RI KO mice than in wild-type, though the total time spent in NREMS was reduced in the KOs compared to wild-type and the return to baseline NREMS was faster in the KOs. The quality of NREMS also was altered more extensively in the wild-type than in the KO mice. Spontaneous rapid eye movement sleep (REMS) was suppressed in IFN-RI KOs as previously reported, but was not substantially altered in either mouse strain by IT poly[rI.rC]/IFNgamma challenge. Our results implicate type I IFNs as inhibitors of the hypothermic response and enhancers of the NREMS response to IT poly[rI.rC]/IFNgamma, a model of acute viral infection.
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PMID:Sleep and body temperature responses in an acute viral infection model are altered in interferon type I receptor-deficient mice. 1624 80

Several common postdischarge symptoms, such as sleep disorders, headache, drowsiness or general malaise, evoke disturbances of circadian rhythms due to jet lag (ie crossing time zones) or shift work rotation. Considering that general anesthesia is associated with numerous effects on the central nervous system, we hypothesized that it may also act on the circadian timing system. We first determined the effects of the circadian timing on general anesthesia. We observed that identical doses of propofol showed marked circadian fluctuations in duration of effects, with a peak at the middle of the resting period (ie 7 h after lights on). Then, we examined the effects of general anesthesia on circadian timing, by analysing stable free-running circadian rhythms (ie in constant environmental conditions), an experimental approach used widely in circadian biology. Free-running rats were housed in constant darkness and temperature to assess possible phase-shifting effects of propofol anesthesia according to the time of the day. When administered around (+/-2 h) the daily rest/activity transition point, a 30-min propofol anesthesia induced a 1-h phase advance in the free-running rest-activity rhythm, while anesthesia had no significant resetting effect at other times of the day. Anesthesia-induced hypothermia was not correlated with the phase-shifting effects of propofol anesthesia. From our results, anesthesia itself can reset circadian timing, and acts as a synchronizing cue for the circadian clock.
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PMID:Reciprocal relationships between general (Propofol) anesthesia and circadian time in rats. 1664 40

Human patients with renal disease frequently develop disturbed sleep and severe fatigue. To develop a model for studying factors that contribute to these symptoms, we characterized the sleep patterns of various strains of mice after acute challenge with the fungal organism Candida albicans. After intravenous administration to mice, C. albicans typically colonizes the kidney, producing acute pyelonephritis. Various strains of inbred mice demonstrate marked variation in the temperature and sleep responses that develop after challenge, with individual strains generally showing increased or reduced somnolence in association with fever or hypothermia, respectively. C. albicans-infected mice may be a useful model for identifying the genes and mechanisms that link sleep, temperature, fatigue, and the immune response.
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PMID:Sleep and temperature responses of inbred mice with Candida albicans-induced pyelonephritis. 1694 52

A 1-year-old girl with influenza-associated encephalopathy initially exhibited prolonged febrile convulsions and subsequent drowsiness. She became unconsciousness and experienced a cluster of seizures 4 days later. Diffusion-weighted magnetic resonance imaging (DWI) showed high signal intensity in the bilateral frontal white matter. This signal change migrated to the bifrontal cortical areas and the caudate nuclei within 10 days, when T2 elongation appeared over the gray and white matter of frontal lobes. Choreoathetosis and oculogyric crisis were transiently noted at this period. Frontal lobe signs, including the forded mouth opening response, after diminution of these movement disorders. The DWI signal change subsequently resolved and frontal cortical atrophy appeared thereafter. Levels of inflammatory cytokines in the cerebrospinal fluid were normal during the acute phase of clinical course. The biphasic clinical course with initial prolonged seizure, involvement of the frontal lobes, and the progression of signal change on DWI from white to gray matter, meets the characteristics of "status epilepticus-type acute encephalopathy" suggested by Shiomi et al. Although pentobarbital infusion, steroid pulse therapy and mild hypothermia did not show any apparent effects on the clinical course of this patient, further trial of these therapies may be warranted for the treatment of this type of encephalopathy.
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PMID:[Influenza-associated encephalopathy with onset of prolonged convulsion: a case report]. 1709 68

The role of type I interferons (IFNs) in mediation of acute viral symptoms (fever, somnolence, anorexia, etc.) is unknown. To determine the role of type I IFN in selected symptom development, body temperature and sleep responses to a marginally lethal dose of X-31 influenza virus were examined in mice with a targeted mutation of the IFN receptor type I (IFN-RI knockouts) and compared to wild-type 129 SvEv control mice. Mice were monitored for 48 h to determine baseline temperature and sleep profiles prior to infection, and then for 9 days following infection. Hypothermic responses to virus were perceptible beginning at 64 h post-infection (PI) and were more marked in KO mice until 108 h, when hypothermia became more exaggerated in wild-type controls. Temperatures of wild-type mice continued to decline through day 9 while temperatures in IFN-RI KO mice stabilized. Time spent in non-rapid eye movement sleep (NREMS) increased in KO mice when hypothermia was marked and then returned to baseline levels, while NREMS continued to increase in wild-type mice through day 9. Other sleep parameters [time spent in rapid eye movement sleep (REMS), relative NREMS EEG slow wave activity, NREMS EEG power density] were all reduced in wild-type mice compared to KOs from days 3 to 8 while REMS low frequency EEG power density increased in wild-type relative to KOs. In conclusion, our results indicate that the presence of functional type I IFN slightly ameliorates disease symptoms early in the X-31 infection while exacerbating disease symptoms later in the infection.
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PMID:Interferon type I receptor-deficient mice have altered disease symptoms in response to influenza virus. 1709 95

Thyroid dermopathy is not a frequent feature of hyperthyroid Graves' disease, being present in less than 5% of the patients. Graves' disease has been shown to exist in euthyroid or hypothyroid forms in untreated patients. Here, we describe a case of hypothyroid Graves' disease with elephantiasis nostras verrucosa (ENV), which is an extreme form of thyroid dermopathy (TD). A 58-year-old female patient was admitted to the emergency department with somnolence, hypothermia, and bradycardia. Her mental status gradually worsened, resulting in a deep coma. She was intubated and followed in the intensive care unit, as she needed mechanical ventilatory assistance due to respiratory failure. She also had bilateral non-pitting edema, a cobblestone-like appearance, and hyperkeratotic greenish-brown-colored lesions in the pretibial and dorsal regions of the feet that were compatible with ENV. Hypothyroid Graves' disease is a very rare condition among autoimmune thyroid disorders, and ENV is an extremely rare form of TD. Here, we present a patient with hypothyroid Graves' disease and ENV.
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PMID:Hypothyroid Graves' disease complicated with elephantiasis nostras verrucosa (ENV): a case report and review of the literature. 1939 Sep 96

Certain sickness behaviors occur consistently in influenza-infected humans and mice. These include body temperature changes, somnolence, and anorexia. Several cytokines serve as mediators of the influenza acute phase response (APR), including these sickness behaviors, and one likely inducer of these cytokines is dsRNA produced during viral replication. TLR3 is known to be one of the host cellular components capable of recognizing dsRNA and activating cytokine synthesis. To determine the role of TLR3-detected viral dsRNA in the causation of viral symptoms, TLR3-deficient mice (TLR3 knockouts, or KOs) were infected with a marginally-lethal dose of mouse-adapted X-31 influenza virus. TLR3 KOs and their wild-type (WT) controls were monitored for baseline body temperature, locomotor activity, and sleep profiles prior to infection. Both mouse strains were then infected and monitored for changes in these sickness behaviors plus body weight changes and mortality for up to 14days post-infection. Consistent with the observations that influenza pathology is reduced in TLR3 KOs, we showed that hypothermia after post-infection day 5 and the total loss of body weight were attenuated in the TLR3 KOs. Sleep changes characteristic of this infection model [particularly increased non-rapid-eye-movement sleep (NREMS)] were also attenuated in TLR3 KOs and returned to baseline values more rapidly. Locomotor activity suppression was similar in both strains. Therefore virus-associated dsRNA detected by TLR3 appears to play a substantial role in mediating several aspects of the influenza syndrome in mice.
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PMID:Attenuation of the influenza virus sickness behavior in mice deficient in Toll-like receptor 3. 1986 Nov 56

We describe a case of accidental cannabis poisoning in a 10-month-old girl, who presented with impaired consciousness, with drowsiness and restlessness, generalized hypotonia, and inadequate smiles. No circulatory or respiratory problems were observed. Initial investigations were not informative (blood biology, CT scan, and cerebrospinal fluid examination), while the main causes of coma (meningoencephalitis, head trauma, metabolic disorders) were excluded. Questioning the parents led to suspecting accidental ingestion of a piece of cannabis, which was confirmed by the detection of high blood and urine levels of cannabinoid derivatives. Management was symptomatic and the clinical course, marked by the occurrence of agitation and irritability episodes lasting up to H18, led to complete regression of symptoms. Because of the high consumption in France, pediatric poisoning by cannabis seems increasingly common. The toxic levels in children are unknown however. Diagnosis is based on questioning and the search for cannabinoid derivatives in urine. In children, clinical symptoms are more expressive compared to adults, with neurological (drowsiness, agitation, abnormal behavior, ataxia, hypotonia, coma, and convulsions) or cardiopulmonary (tachycardia, bradypnea, apnea) or homeostatic presentations (hypothermia). Treatment in children is essentially symptomatic but sometimes requires active resuscitation. Recommendations are based on clinical monitoring the first 24h after intoxication and on medicosocial support.
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PMID:[Acute cannabis poisoning in a 10-month-old infant]. 2265 16


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