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Query: UMLS:C0018681 (headache)
 56,091 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Eighty-two patients were hospitalized following an accidental exposure to chlorine. All patients presented with dyspnoea and cough. The other symptoms included irritation of throat (53.6%), irritation of eyes (42.3%), headache (29.2%), abdominal pain (26.8%), vomiting (24.3%) and giddiness (9.7%). All of them had bronchospasm and 5 (6%) had cyanosis at the onset. An x-ray of the chest revealed patchy infiltrates in 3 (3.85%) and hilar congestion in 2 (2.44%). Pulmonary function tests showed an obstructive pattern in 27.4%, restrictive in 3.25% and mixed in 53.2%. Pulmonary functions were normal in 16.1% of the patients. Bronchoscopy revealed tracheobronchial mucosal congestion in all cases, hemorrhagic spots in 35.7%, erosions and ulcers in 12.5%. All patients were treated with oxygen, aminophylline, hydrocortisone and antibiotics. Haematemesis (n = 1) and pulmonary oedema (n = 2) developed 12 hours after the admission. Two other patients developed pneumonia 48 hours later. All patients recovered satisfactorily. On follow-up 16 patients had no sequelae after one year. Pulmonary functions were normal in 5 patients after 3 years of follow-up.
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PMID:Acute accidental exposure to chlorine fumes--a study of 82 cases. 145 67

The study was carried out in 89 men aged 21 to 57 years with a history of exposure to mercury vapour from 2 to 26 years during occupational work involving chlorine production by the method of mercury electrolysis. The workers were divided into three groups depending on the duration of occupational exposure: 1) 32 workers with a short history of exposure 2-10 years, 2) 37 workers with medium-long exposure - 11-20 years, and 3) 20 workers with a history of long exposure - 21-26 years. The urinary concentrations of mercury in these individuals was 73 +/- 60 microliters x 1(-1), and in blood this concentration was not exceeding 50 microliters x 1(-1). The control group comprised 40 men aged 17 to 52 years. They had not had any occupational exposure to chemicals, or harmful physical factors. On the basis of clinical, haematological and biochemical studies 89 workers with occupational exposure to mercury vapour were regarded as clinically healthy. None of them had any symptoms and signs of the complete neurasthenic syndrome or organic brain injury. Increased nervous excitability was the complaint of 24 workers, 9 had headaches, sleep disturbances were reported by 5, and a feeling of tiredness and apathy was mentioned by 5 men. EEG recording demonstrated 81 normal tracings, and moderately pathological records in 8 men. The parameters of immunity and proteins acute phase reaction were determined, measuring the concentration of immunoglobulins, lysozyme, C3c, C4, alpha 1-acid glycoprotein, haptoglobin and ceruloplasmin in serum. A lower level of IgA, IgG and lysozyme was only noted in individuals with occupational exposure exceeding 20 years.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Parameters of immunity acute phase reaction in men in relation to exposure duration to mercury vapours. 172 75

New compounds were synthesized with the aim to develop new anti-estrogenic antitumor drugs. The biological properties of the molecules were screened by (1) estrogen receptor (ER) binding, (2) effect on MCF-7 cells, (3) uterotrophic effect and inhibition of estradiol induced uterotropic effect and (4) antitumor effect in DMBA induced rat mammary cancer. One of the molecules, Fc-1157a = toremifene, exhibited the following characteristics: competitive inhibition of [3H]estradiol binding to ER (IC50 = 0.3 mumol/l), inhibition of MCF-7 cell growth in a concentration-dependent manner and cell-killing effect at higher than 3 mumol/l concentrations. Minimal estrogenic dose of toremifene on rat uterus weight was about 40 times higher than that of tamoxifen. Toremifene had statistically significant effect against DMBA-induced rat mammary cancer. Further screening consisted of antitumor, pharmacokinetic and safety studies. Toremifene inhibited the growth of ER-negative, glucocorticoid sensitive, mouse uterine sarcoma in a dose-dependent manner. Pharmacokinetics and metabolism of toremifene resembled closely those of tamoxifen, but since the chlorine atom of the toremifene molecule was not metabolically cleaved tamoxifen and toremifene did not have chemically similar metabolites. Toremifene was well tolerated in animal toxicity studies. No hyperplastic or neoplastic nodules, which were seen in almost all high-dose (48 mg/kg for 24 weeks) tamoxifen-treated rats, were found in toremifene-treated rats (dose 48 mg/kg). In clinical phase I studies in healthy voluntary postmenopausal women, no side effects were reported, at doses less than or equal to 460 mg, neither after a single dose nor after five daily doses. At the dose of 680 mg two out of five persons experienced vertigo and headache. Toremifene, at the dose of 68 mg daily, had antiestrogenic effect on estradiol-induced human vaginal epithelial cells. Clinical phase II studies have confirmed that toremifene has a promising antitumor effect.
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PMID:Review of the pharmacological properties of toremifene. 214 31

A woman gardener of 49 years of age suffered an inhalational intoxication from chlorine dioxide while bleaching dried flowers. Preparation of the bleaching solutions was associated with a sharp pungent smell, coughing, pharyngeal irritation and headache. Seven hours later increasing cough and dyspnoea led to hospitalisation. Clinical findings were tachypnoea, tachycardia, and rales of auscultation; clinical chemistry revealed marked leucocytosis. Chest X-ray did not yield any abnormal findings. Initially the vital capacity and forced expiratory volume in 1 s markedly reduced and the resistance correspondingly enhanced. Blood gas analysis showed hypoxaemia despite alveolar hyperventilation. Administration of corticosteroids resulted in significant alleviation of complaints and in improved lung function with stabilisation in a highly normal range, as confirmed by follow-up examination two years later. The chlorine dioxide intoxication had been due to pH level reduction resulting from an incorrect proportioning and handling of the individual bleaching agent components when preparing the solution.
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PMID:[Bleaching agent poisoning with sodium chlorite. The toxicology and clinical course]. 378 Apr 69

In the period June 6--July 24, 1977, and outbreak of illness due to adenovirus type 3 (AV3) occurred in residents of a suburban community (Community A), Dekalb County, Georgia. Based on surveys, at least 105 cases occurred. The illness was primarily characterized by sore throat, fever, headache, and anorexia. Conjunctivitis affected only 34 of 105 (32%) of the individuals in two surveys. Frequent use of a private swimming pool was associated with illness in Community A residents. The outbreak coincided with a temporary defect in the pool filtration system which probably prevented maintenance of proper chlorine levels in the pool water, and suggested that the infection was spread by pool water. However, the predominant mode of transmission could not be shown conclusively to be waterborn rather than person-to-person.
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PMID:An outbreak of adenovirus type 3 disease at a private recreation center swimming pool. 624 55

Forty-six people became ill with vomiting, diarrhoea and headache within days of an outdoor swimming pool opening for the summer season in a small seaside village. During the weekend of the outbreak, 185 tickets to the pool had been sold. It was found that 34 bathers were ill, and one subject had vomited into the pool. All other cases arose after this incident. The risk of infection was greatest among those who swallowed pool water (24/28 versus 10/17, p = 0.07). Echovirus 30 was isolated from the case who vomited into the pool and from six other cases. Normal chlorine levels had not been adequate to contain the infection risk from vomitus, and, in future, pool attendants witnessing such incidents should consider closing the pool to the public and seeking advice on superchlorination.
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PMID:A community outbreak of echovirus infection associated with an outdoor swimming pool. 794 87

At the Institute of Occupational Medicine and Environmental Health, during 12 years, chronic mercury intoxication was diagnosed in 34 persons. There were male workers tending technological processes in which Hg was used as a catalyst (synthesis of acetic aldehyde and obtaining chlorine). The length of professional exposure was 13-34 years (mean 20.6). The patients were removed from the contact with Hg after Hg intoxication case was confirmed. During the following 11 years, 24 of them were reexamined in the clinical department 2-4 times. The clinical picture of the poisoning consisted mainly of neurasthenic, cerebellar (30 persons), psychoorganic symptoms (20 persons) and behavioural changes (irritability, aggressive states). Headaches, sleep and recent memory disturbances, progressive behavioral changes, dizziness, were the most frequent complaints. The authors stressed the irreversibility of central nervous disorders despite cessession of the exposure to Hg. The degree of cerebellar intensity changes did not handicap examined patients. This is especially important to show the difference between the above described clinical picture of Hg intoxication and multiple sclerosis.
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PMID:[Changes in the nervous system due to occupational metallic mercury poisoning]. 951 54

In July 1995 an outbreak of pharyngoconjuctivitis caused by adenoviruses occurred among athletes participating in a swimming contest in a town in southern Greece (Peloponnese). At least 80 persons displayed symptoms of the illness, with the predominant ones being high fever, sore throat, conjuctivitis, headache, and abdominal pain. Poor chlorination was probably the cause of the outbreak (residual chlorine <0.2 mg/l), as after hyperchlorination the spread of adenoviruses stopped. Rapid detection of adenoviruses in the municipal swimming pool water by nested polymerase chain reaction (PCR) amplification allowed quick control of the outbreak.
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PMID:Detection of adenovirus outbreak at a municipal swimming pool by nested PCR amplification. 951 77

Microbiological, biological, and chemical toxins have been employed in warfare and in terrorist attacks. In this era, it is imperative that health care providers are familiar with illnesses caused by these agents. Botulinum toxin produces a descending flaccid paralysis. Staphylococcal enterotoxin B produces a syndrome of fever, nausea, and diarrhea and may produce a pulmonary syndrome if aerosolized. Clostridium perfringens epsilon-toxin could possibly be aerosolized to produce acute pulmonary edema. Ricin intoxication can manifest as gastrointestinal hemorrhage after ingestion, severe muscle necrosis after intramuscular injection, and acute pulmonary disease after inhalation. Nerve agents inhibit acetylcholinesterase and thus produce symptoms of increased cholinergic activity. Ammonia, chlorine, vinyl chloride, phosgene, sulfur dioxide, and nitrogen dioxide, tear gas, and zinc chloride primarily injure the upper respiratory tract and the lungs. Sulfur mustard (and nitrogen mustard) are vesicant and alkylating agents. Cyanide poisoning ranges from sudden-onset headache and drowsiness to severe hypoxemia, cardiovascular collapse, and death. Health care providers should be familiar with the medical consequences of toxin exposure, and understand the pathophysiology and management of resulting illness.
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PMID:Microbiological, biological, and chemical weapons of warfare and terrorism. 1207 87

The investigation reported here was conducted to describe the pattern of calls received by the Texas Poison Center Network (TPCN) in relation to a chlorine gas release that resulted from a train collision in Bexar County, Texas, on June 28, 2004, and to test various methods for conducting toxicosurveillance. TPCN received a total of 42 calls; the first call was received approximately 35 minutes after the collision. Calls continued for 10 days after the collision. Comparison of the number of calls received from Bexar County on the collision date with the number of similar calls received in the past revealed that numbers for this collision date were elevated for total calls, total information calls, total human exposure calls, chlorine gas calls, and calls involving coughing or choking, headache, throat irritation, or bronchospasm. When a similar analysis was performed for the entire state, call numbers were elevated only for chlorine gas calls and calls involving bronchospasm.
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PMID:Investigation of Texas poison center calls regarding a chlorine gas release: implications for terrorist attack toxicosurveillance. 1711 83


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