Elektromagnetiska fält, elöverkänslighet och neurologisk sjukdom - en kunskapsöversikt
01 Jan 1998-
About: The article was published on 1998-01-01 and is currently open access. It has received 5 citations till now.
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TL;DR: Annoyance related to electrical and/or chemical factors was common in a Swedish population and the association with subjective health and functional capacity increased with severity of annoyance, which suggests that there is some connection between environmental annoyance, well-being andfunctional capacity.
79 citations
TL;DR: The prevalence of symptoms in the Swedish population was found to accord with results in studies based on different kinds of samples, and SBS symptoms, skin symptoms, and symptoms similar to those reported by individuals with ``electric hypersensitivity'' were significantly more prevalent among employees with extensive VDU usage.
Abstract: Aims: Health problems associated with indoor environments have been reported and discussed extensively during the past few decades, not least in Sweden. There is, however, great uncertainty concerning the background prevalence of the symptoms in question. The main objective of the present study was to investigate the prevalence of general, mucosal, and skin symptoms in the Swedish population. Methods: A survey comprising 3,000 randomly selected Swedes, age 18—64, was carried out. The survey addressed 25 symptoms, principally general, mucosal, and skin symptoms. A number of other areas were covered and individual data registered at Statistics Sweden were added. The response rate was 70% (2,154 cases). Results: The prevalence of symptoms in the Swedish population was found to accord with results in studies based on different kinds of samples. Women reported significantly more single symptoms, as well as sets of symptoms, than men. There was no clear connection between age and symptoms. The prevalence of sym...
47 citations
Cites background from "Elektromagnetiska fält, elöverkänsl..."
...A number of studies have found a positive association between amount of VDU work and selfreported skin symptoms, but no specific VDUrelated skin disorder has been found in clinical studies [23]....
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...Electromagnetic fields, flickering light, and stress have been suggested as the link between extensive VDU work and health complaints [23]....
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Book•
01 Jan 1997
TL;DR: A summary of the knowledge on astroglial-neuronal interaction in glutamate neurotransmission is given in this article, focusing on the contribution of astroglia to synaptic dynamics.
Abstract: This is a summary of the knowledge on astroglial-neuronal interaction in glutamate neurotransmission, especially focusing on astroglial contributions to synaptic dynamics. It briefly addresses different topics such as membrane receptors and signal transduction systems on astroglia and the expression of some ion channels and glutamate carriers.
7 citations
01 Jan 2002
5 citations
Cites background from "Elektromagnetiska fält, elöverkänsl..."
...I ett antal provokationsstudier i Sverige och utomlands har man inte lyckats finna någon korrelation mellan elöverkänsligas exponering för elektronmagnetiska fält och symptomförekomst (för en översikt se (13))....
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...Detta är i överensstämmelse med de diskussioner som förts vid studier av elöverkänsliga (13; 88; 113; 132)....
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4 citations
References
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Journal Article•
TL;DR: No characteristic histologic changes in facial skin were found in individuals with skin symptoms claimed to be associated with exposure to VDUs, and no parameter was significantly more common in exposed subjects than in non-exposed persons with equivalent skin signs.
Abstract: Facial punch biopsies from 83 patients with skin complaints with or without skin lesions and supposedly associated with work at visual display units (VDUs) were compared to biopsies from 51 subjects with no VDU exposure with or without skin lesions. Coded slides were assessed by three independent observers regarding hyperplasia of sebaceous glands, occurrence of telangiectases, intensity of inflammatory infiltrate, degree of hydropic degeneration of basal cells, occurrence of demodex folliculorum, number of mast cells and degree of degenerative changes in elastic fibers. No parameter was significantly more common in exposed subjects than in non-exposed persons with equivalent skin signs. The controls without skin lesions also showed various degrees of histologic changes. Hyperplasia of sebaceous glands was more common in men and in young persons. Degenerative changes in elastic fibers increased with age, but were also obvious in some persons under 35 years of age. In this study no characteristic histologic changes in facial skin were found in individuals with skin symptoms claimed to be associated with exposure to VDUs.
24 citations
"Elektromagnetiska fält, elöverkänsl..." refers background in this paper
...En histopatologisk undersökning av 51 fall av bildskärmsrelaterade besvär jämfört med andra patienter har publicerats (16)....
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Journal Article•
TL;DR: The self-administered questionnaire seems to give reasonably adequate answers regarding the occurrence of more clear-cut symptoms over a period of time, rather than Answers regarding the presence of signs at a particular point in time, however, less marked changes might not be picked up particularly well and the use of questionnaires alone cannot be recommended when studying mild skin problems due to a particular exposure in a population.
Abstract: A questionnaire about facial skin problems was answered by 3745 office employees with the aim of discovering whether VDU work causes skin disease. From this group, 809 randomly selected persons were examined and interviewed by a dermatologist. There was a relatively good correspondence (87%) between the results from the interviews and the questionnaires, but the questionnaire results corresponded to current status in only 46% of the cases. No important difference was seen between those who were informed and those who were not informed about the purpose of the investigation. There was a relatively wide variation in the correlation between two responses to the same questions. In conclusion, the self-administered questionnaire seems to give reasonably adequate answers regarding the occurrence of more clear-cut symptoms over a period of time, rather than answers regarding the presence of signs at a particular point in time. However, less marked changes might not be picked up particularly well and the use of questionnaires alone cannot be recommended when studying mild skin problems due to a particular exposure in a population.
24 citations
"Elektromagnetiska fält, elöverkänsl..." refers background in this paper
...Bengt Knave Ulf Bergqvist Ordförande i kriteriegruppen Sammankallande i expertgruppen (fram t. om....
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...Ulf Bergqvist, Thomas Brante, et. al....
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...Ulf Bergqvist, Thomas Brante, m. fl. Elektromagnetiska fält, elöverkänslighet och neurologisk sjukdom - en kunskapsöversikt....
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...och neurologisk sjukdom – en kunskapsöversikt Ulf Bergqvist Thomas Brante Kjell Fransson Kjell Hansson Mild Lena Hillert Olle Johansson Lars Rönnbäck Monica Sandström Berndt Stenberg a...
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...Enligt Berg (14) fann man en relativt god korrelation mellan symptom och kliniska diagnoser som byggde både på kliniska fynd och symtom; omkring 87% av alla med hudbesvär hade också en klinisk diagnos, medan enbart 46% av de med hudbesvär hade kliniska tecken till hudsjukdom vid undersökningstillfället....
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Journal Article•
TL;DR: The daily uptake of mercury from inhaled mercury vapor released from dental amalgam seems to make a very small contribution to the total body burden of mercury, in comparison with what can be tolerated in the work environment.
Abstract: Because of its long-term clinical use there is more information and research data available about dental amalgam than about any other dental restorative material. However, on and off the safety of dental amalgam has been called in question and during the 80's the mercury controversy came to the fore, not only within the profession but also among the general public. Sources of mercury vapor contamination within dentistry were identified and attempts made to evaluate the contributions to the daily mercury uptake which can be attributed to dental amalgam. Mercury can be released from dental amalgam by evaporation and electrochemical corrosion as well as from amalgam particles which have been swallowed. A major route for mercury uptake from amalgam restorations is through inhalation of mercury vapor. The present study focused on experimental and analytical difficulties associated with the measurement of mercury vapor released in the oral cavity. A careful methodological study of the kind of source of mercury vapor that is prevalent and on the methods for measuring the intra-oral release of mercury vapor was carried out. With this as a basis quantitative determinations of the release rate of mercury vapor from amalgam restorations were made on healthy human subjects not occupationally exposed to mercury. The daily uptake of mercury from inhaled mercury vapor was calculated and salivary and urinary mercury levels were determined. In addition the release rate of mercury vapor from different types of amalgam was studied in vitro and in vivo. The findings may be summarized as follows: The only relevant measurable quantity when determining the mercury vapor released from amalgam restorations is the amount released per time unit, i.e. the amount of mercury vapor collected during intra-oral sampling is proportional to the sampling time. The diffusion of mercury atoms inside an amalgam restoration results in the formation of a concentration gradient in the surface of the amalgam. This mercury diffusion is the rate-determining step for mercury vapor release in the long run. In the short run the mercury concentration gradient prevalent on the amalgam surface on the measuring occasion is the apparent rate-determining step. The daily uptake of mercury from inhaled mercury vapor released from dental amalgam seems to make a very small contribution to the total body burden of mercury, in comparison with what can be tolerated in the work environment. The in vitro results revealed obvious differences regarding the release rate of mercury vapor from dissimilar amalgam types.(ABSTRACT TRUNCATED AT 400 WORDS)
24 citations
"Elektromagnetiska fält, elöverkänsl..." refers background in this paper
...Berglund och medarbetare (19, 20) kunde inte se någon frisättning hos frivilliga försökspersoner efter exponering för magnetfält....
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TL;DR: It is hypothesized that the positive treatment results observed are partly due to weakening of the conditioned response, linking bodily symptoms to environmental agents, and both groups improved significantly in key variables during and after treatment.
Abstract: Twenty patients with symptoms of "environmental illness" were subject to a controlled study of deep versus superficial acupuncture. The patients were evaluated by a detailed questionnaire concerning their occupational, environmental, and medical history. Blood samples were taken as well. Patients were randomized to deep or superficial acupuncture. Both groups improved significantly in key variables during and after treatment. There were no group differences. There were no changes in biological variables apart from a gradual and continuous increase in serum cortisol and a decrease in neuropeptide Y, which was somewhat more accentuated in those receiving deep acupuncture. This rise in cortisol may have contributed to decreased dermal symptoms among the participants. It is hypothesized that the positive treatment results observed are partly due to weakening of the conditioned response, linking bodily symptoms to environmental agents. To date, a number of different methods have been tried in the management of patients with environmental illness. However, only rarely have the treatments been evaluated in controlled studies.
24 citations
TL;DR: This study analyzed the experimental data about the relationship between exposure to 50/60-Hz electric and magnetic fields (EMF) and melatonin secretion by the pineal gland and found that changes in melatonin gland secretion cannot yet be considered a verified biologic explanation of any such association.
Abstract: This study analyzed the experimental data about the relationship between exposure to 50/60-Hz electric and magnetic fields (EMF) and melatonin secretion by the pineal gland. The authors report their results and discuss possible health consequences, in the light of epidemiologic data suggesting that breast neoplasms and depressive disorders might be related to EMF. The nocturnal peak of melatonin has been reported to be diminished, or time-shifted, or both, in rodents exposed to electric and/or magnetic fields. Current experimental data from primates and humans are insufficient to show that this change occurs in them. Epidemiologic studies of associations between EMF exposure and breast cancer and between EMF exposure and depressive disorders suggest that modifications of melatonin secretion could be a biologic signal of these effects. Nonetheless, changes in melatonin secretion cannot yet be considered a verified biologic explanation of any such association.
24 citations
"Elektromagnetiska fält, elöverkänsl..." refers background in this paper
...En relativt färsk översiktsartikel av Lambrozo och medarbetare (89) har sammanfattat nuvarande kunskap från djurförsök avseende melatonin och exponering för lågfrekventa elektriska eller magnetiska fält (EMF):...
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