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pISSN: 2251-6085
eISSN: 2251-6093
Chairman & Editor-in-Chief:
Dariush D. Farhud, MD, Ph.D., MG.
This journal is a member of, and subscribes to the principles of, the Committee on Publication Ethics (COPE). 
Vol 5 No 3 (1976)
Articles
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While the «classical insecticides» (DDT: Dieldrin, Malathion, etc.) mainly affect the adult stage of insects, Dimilin belongs to a new group of insecticidal compounds that kills the insect in its larval stages, but has no lethal affect on the adult insect. Its empirical formula is C14H9H2~F2CL. Diflubenzuron is proposed as common name for the trade name Dimilin. Studies were made on C. pipiens, Ae. aegypti, and A. stephensi Liston. Results have shown that this compound affects all larval stages, the eggs and the pupae of these mosquitoes. Dimilin is a stomach poison. Insect larvae which have ingested Dimilin lose the ability to mount and death follows. Histological and biochemica1 studies indicate that the compound does not seem to affect hormonal evaluation of the larvae. It probably blocks the chitin synthesis. Defect show in the newly developed cuticle, so that the larvae cannot withstand the internal pressure or the strain of muscle contraction. In this way molting is impeded and prevented depending on the instars and the species involved.
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There are few published reports on epidemiological studies concerning Rubella in Iran. The level of antibody in vaccinated individual’s declines gradually and the chances of infection in these people are much greater to those naturally immunized by infection. Therefore, it seemed logical to determine the level of antibody in non vaccinated female students, aged from 18 to 26 years of Isfahan University, to know the degree of their susceptibility to infection. The results of antibody titration revealed that in this age group the level of antibody was high enough to prevent infection.
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The study was carried out on 1300 in patients in Isfahan Medical School teaching hospitals during the last ten years. 1) 13.6% of patients complained pf pericardial pains but nothing wrong with their hearts. 2) More false pericardial pains were seen among young patients rather than C.H.D. in addition to these more false precardial pains among women with comparing to men. 3) The severity of C.H.D. was seen in fifty it decreases among men but increases among women till seventy. 4) The ratio of C.H.D. among men and women was ten to one.
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Nine hundred and twelve, consecutive patients attended various clinics of Isfahan University for various complains have been evaluated for A.S.O. Titers among whom 172 has positive nasopharyngeal cultures for type A, B hemolytic streptococcus. All of the patients with positive cultures have A.S.O. Titers of above 333 Todd’s unit, while with exception of 22 cases all of the others had values of less than 333. All of the patients, with positive cultures were in their second or third decades of life. According GO these findings we suggest that A.S.O. values of more than 333 Todd units should be accepted as an important finding favoring streptococca1 infection.
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The tuberculin skin test is the most effective means for detecting tuberculosis. Therefore, it is an essential tool in epidemiological surveys for control and ultimate eradication of tuberculosis. The estimate the rate of tuberculosis infection (Mycobacterium tuberculosis) and prevalence of mycobacterium other than Mycobacterium tuberculosis, so called atypical mycobacterium, in IRAN 920 army men, ranging in age from 18-26 years, who have been born and lived in different part of Iran were skin tested. Every individual received two intradermal injections (Mantoux test). One with 5 tuberculin units of PPD-S, prepared from Mycobacterium tuberculosis. The other was 5 tuberculin units of PPD-G, prepared from Scothchromogenic Mycobacterium. 343 individuals (43.5%) of total number tested showed a positive reaction (10mm or more indurations) to PPD-S. The size of the reaction to PPD-G of 222 individuals (28.3%) of total number was more than the size of reaction to PPD-S. This latter I group seems to have been infected with atypical mycobacterium. Alth.dug14. the distribution of individuals tested doesn’t correspond with the population of each area, but, everyone entered in this study has been appointed at random to the Isfahan military base. This study demonstrates that atypical mycobacterium infection is present in all provinces of Iran and tuberculin reactors are highest in north provinces an extensive epidemiological study in different parts of Iran in this connection is suggested. In this paper the source of low grade sensitivity to PIPD-S observed above and the significance of cross reaction in epidemiological survey of tuberculosis has been discussed in detail.
