Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0011570 (depression)
 172,036 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Although formalin ingestions have previously been reported in the literature, technology has only recently been developed to measure both formaldehyde and formate levels in plasma. Methanol, formaldehyde, and formate levels were followed in the case reported here until the patient's death approximately 13 h after the ingestion. The clinical course was marked by an initial profound CNS depression followed by an apparent clinically quiescent period. Severe abdominal pain and retching preceded the development of seizures, DIC, severe hypotension, and cardiac arrest. Methanol levels rose throughout this 13-h course. Formate and formaldehyde levels increased until bicarbonate and ethanol therapy were instituted. The "fixing" of the stomach by formaldehyde may have produced delayed absorption following formalin ingestion. Therapeutic implications are discussed.
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PMID:Formate levels following a formalin ingestion. 232 60

Toxic actions of flurazepam (FZP) were studied in cats, mice and rats. High doses caused an apparent central excitation, most clearly seen as clonic convulsions, superimposed on general depression. Following a lethal dose, death was always associated with convulsions. Comparing the relative sensitivity to central depression and excitation revealed that rats were least likely to have convulsions at doses that did not first cause loss of consciousness, while cats most clearly showed marked central excitatory actions. Signs of FZP toxocity in cats included excessive salivation, extreme apprehensive behavior, retching, muscle tremors and convulsions. An interaction between FZP and pentylenetetrazol (PTZ) was shown by pretreating mice with FZP before PTZ challenge. As a function of dose, FZP first protected against convulsions and death. At higher doses, however, convulsions again emerged. These doses of FZP were lower than those that would alone cause convulsions. These results may be relevant to the use of FZP in clinical situations in which there is increased neural excitability, such as epilepsy or sedative-hypnotic drug withdrawal.
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PMID:Central excitatory actions of flurazepam. 610 51

To investigate the changes in salivary secretion associated with emesis, salivary secretion from the submaxillary gland and centrifugal discharge from the parasympathetic postganglionic nerve fibers from the submandibular ganglion were measured after emetic stimulation in chloralose-anesthetized and paralyzed dogs. In the basal condition, saliva flow and the basal frequencies of single unit discharges from the parasympathetic nerve were very low. Esophageal and gastric distension and lingual nerve afferent stimulation generally increased salivary secretion and nerve activity. Administration of apomorphine (0.2-0.3 mg/kg im) or intragastric infusion of copper sulfate (10%, 50 ml) elicited an excitation of parasympathetic nerve activity, and salivary secretion was facilitated in parallel to this nerve activity. The excitatory responses induced by emetic stimulation were suddenly depressed in correspondence with retching activities. This depression in nerve activity appeared 200-400 ms after the beginning of retching volleys of the phrenic nerve and continued during retching. These results indicate that the salivary center receives excitatory and inhibitory inputs from two different sources before and during retching activities, respectively.
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PMID:Canine salivary secretion from the submaxillary glands before and during retching. 797 43

Palatal and pharyngeal sensation and motor responses, and volitional palatal movement, were tested in 171 healthy adults and 43 patients with motor neuron disease. In healthy adults palatal and pharyngeal sensation and volitional palatal elevation were present in all; the palatal and pharyngeal motor responses could not be elicited on first testing in two (1.1%) and seven (4.1%) subjects respectively. Pharyngeal motor responses were more easily elicited in older subjects and palatal responses were more easily elicited in women. Eye watering and retching were the most common accompanying features. In 57 normal subjects tested on five occasions there was considerable variation in the stimulus required to elicit the motor responses within subjects: in none of four subjects (7%) who initially had absent responses were they always absent. Pharyngeal motor responses were more easily elicited in patients with motor neuron disease than in matched normal subjects; within the motor neuron disease group pharyngeal motor responses elicited by tongue depression were associated with the symptom of food or drink "going down the wrong way" > 1/month and a reduction in average volume per swallow (ml) and swallowing capacity (ml/s). Volitional palatal elevation was absent in five patients (11.6%). In six of eight patients with motor neuron disease studied repeatedly (on between two and seven occasions) the palatal and pharyngeal responses were elicited with the same stimulus on each occasion. In healthy adults palatal and pharyngeal sensation and motor responses should be present although considerable variation occurs in the stimulus required. In patients with motor neuron disease features of impaired swallowing are associated with a brisk rather than a depressed pharyngeal response.
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PMID:Palatal and pharyngeal reflexes in health and in motor neuron disease. 867 70

To investigate changes in motility of the extrahepatic biliary system associated with emesis, we measured the volume of the gallbladder and flow resistance through the sphincter of Oddi, as well as antral and duodenal contractilities before and during retching in decerebrate paralyzed dogs. Motilities of the gallbladder, sphincter of Oddi, duodenum and antrum were enhanced with most episodes of fictive retching elicited by stimulation of the central part of the severed dorsal, as well as the ventral trunk of the thoracic vagus nerve. These enhanced motilities persisted until the end of retching. Motilities of the sphincter of Oddi and duodenum were sometimes transiently depressed at the beginning of retching. This depression in the sphincter continued for only 13 +/- 1.0 s, while the gallbladder contraction continued for 65 +/- 3.4 s. Motilities were rarely enhanced by vagal stimulation when retching was not elicited. These changes in motilities were abolished by bilateral vagotomy. The serum gastrin level was increased just after and 10 min after retching only when the ventral vagal trunk remained intact, while the plasma cholecystokinin level was not changed with retching. These results suggest that bile evacuation is interrupted with emesis despite contraction of the gallbladder during retching, since the sphincter of Oddi also contracts simultaneously.
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PMID:Changes in extrahepatic biliary motilities with emesis in dogs. 878 85

Eight Mink (Mustela vison) were inoculated orally with Aujeszky's disease virus (ADV). Three mink were killed at the onset of clinical signs and the other mink died spontaneously after inoculation. The incubation period ranged from 72 to 96 hours and was followed by a short illness characterised by increasing salivation, vomiting and retching, depression and coma. Microscopically, lesions were confined to the brain stem and consisted of a discrete non-suppurative encephalitis. Viral antigen was detected by an immunoperoxidase technique predominantly in association with specific lesions, although sometimes it was found within non-altered areas in the brain stem. Virus isolation confirmed the presence of ADV in the central nervous system. Fibrinoid degeneration of vessel walls was present in pharynx, larynx and myocardium in association with haemorrhages. Microthrombi were observed in heart and brain.
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PMID:Distribution of Aujeszky's disease virus in experimentally infected mink (Mustela vison). 915 74

The effects of intravenous (i.v.) infusion of platelet-activating factor (PAF), 100 ng/kg/min for 10 min, with and without pretreatment with a selective PAF-antagonist on gastrointestinal electrical activity, arterial pressure and clinical and haematological parameters were studied. Conscious miniature pigs with electrodes implanted in the wall of the antrum pylori and small and large intestine were used. Platelet-activating factor induced restlessness or depression, shivering, tachypnoea and coughing, retching and vomiting, hypotension and a delayed and sustained increase in leucocyte count with an increase in percentage of segmented neutrophils. The PAF-antagonist, SAH 63-675, administered at 10 mg/kg intravenously, inhibited these effects. Platelet-activating factor resulted in a decrease in electrical activity in the antrum and large intestine, whereas small intestinal activity was not significantly influenced. Pretreatment with the antagonist suppressed these inhibitory effects.
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PMID:Influence of platelet activating factor on gastrointestinal electrical activity and some haematological and clinical parameters in the conscious miniature pig. 1059 37

Treatment with St John's wort extract tablets (hypericum Ze 117) and the commonly used slow serotonin reuptake inhibitor (SSRI) fluoxetine was compared in patients with mild-moderate depression with entry Hamilton Depression Scale (HAM-D) (21-item) in the range 16-24, in a randomized, double-blind, parallel group comparison in 240 subjects; fluoxetine: 114 (48%), hypericum: 126 (52%). After 6 weeks' treatment, mean HAM-D at endpoint decreased to 11.54 on hypericum and to 12.20 on fluoxetine (P < 0.09), while mean Clinical Global Impression (CGI) item I (severity) was significantly (P < 0.03) superior on hypericum, as was the responder rate (P = 0.005). Hypericum safety was substantially superior to fluoxetine, with the incidence of adverse events being 23% on fluoxetine and 8% on hypericum. The commonest events on fluoxetine were agitation (8%), GI disturbances (6%), retching (4%), dizziness (4%), tiredness, anxiety/nervousness and erectile dysfunction (3% each), while on hypericum only GI disturbances (5%) had an incidence greater than 2%. We concluded that hypericum and fluoxetine are equipotent with respect to all main parameters used to investigate antidepressants in this population. Although hypericum may be superior in improving the responder rate, the main difference between the two treatments is safety. Hypericum was superior to fluoxetine in overall incidence of side-effects, number of patients with side-effects and the type of side-effect reported.
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PMID:Equivalence of St John's wort extract (Ze 117) and fluoxetine: a randomized, controlled study in mild-moderate depression. 1075 36

Some factors have demonstrated an influence on emesis and antiemetic response. In order to study these factors, 306 patients (pts) entered this study receiving cisplatin based combination chemotherapy (CT) (100 mg/m3, with ondansetron (8 mg, 3 times daily for 4 days) as the only antiemetic treatment. Known factors that influence the result of antiemetic therapy such as age, sex, performance status (Karnofsky), site of primary tumor, weight loss, anxiety, depression, psychological problems related to CT (psychological PRC) etc, were included in the evaluation. We evaluated the number of vomits, retches and nausea. The existence of psychological PRC was found to be a prominent factor for the development of nausea and emesis, being at the same time strongly associated with scaling variables (Gralla, retching and nausea grading) used to measure the severity of nausea and emesis (p = 0.001). Stress was also a significant predictor; patients with stress had an almost two times higher probability to develop nausea or retching compared to patients without stress indications (p = 0.001), while the occurrence of retching was marginal. Younger patients (less than 40 years old) were found to be almost three times more susceptible to retching compared to older patients (more than 40 years old) (P 0.006). With all possible evaluations, we concluded that significant factors are psychological PRC, stress and age. In conclusion, three factors, age, stress and psychological PRC, should be taken seriously into consideration in the design of future trials evaluating antiemetic treatment, as well as in the every-day clinical practice, in order to provide patients with a better quality of life during emetogenic CT.
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PMID:Parameters that influence the outcome of nausea and emesis in cisplatin based chemotherapy. 1120 18

Brimonidine is an ophthalmic solution of 0.2% brimonidine tartrate used to lower intraocular pressure in human glaucoma patients. A retrospective study was conducted of brimonidine ophthalmic solution ingestion in 52 dogs reported to the ASPCA Animal Poison Control Center between January 1998 and December 2000. Eighty percent of the dogs were < 1-y of age. Approximate ingested dosages ranged from 0.18-5.55 mg/kg. Incidence of clinical signs were bradycardia (67%), depression (46%), ataxia (27%), hypotension (25%), pallor (23%), weakness (17%), change in mucous membrane color (17%), hypothermia (13%), vomiting or retching (13%.). Shock, weak pulses, and poor capillary refill time were also reported. Treatment involved early decontamination, supportive care, andyohimbine and atipamezole as specific alpha-2 antagonists that could be helpful in reversing the effects of brimonidine. Due to the possibility of severe cardiovascular effects developing, the ingestion of brimonidine ophthalmic solution in dogs should be considered dangerous.
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PMID:Clinical effects of brimonidine ophthalmic drops ingestion in 52 dogs. 1182 75


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