Mahtab Khosrofar, Mohammad Reza Pourreza, Samira Asgharzadeh, Parisa Tahmasebi, Elahe Ali Asgari, Reza Ghasemikhah, Nader Saki, Javad Mohammadi-Asl, Morteza Hashemzadeh Chaleshtori, Mohammad Amin Tabatabaiefar,
Volume 20, Issue 3 (6-2017)
Abstract
Abstract
Background: Hearing loss (HL) is the most common congenital defect in humans. One or two in thousand newborn babies have prelingual hearing loss. Autosomal recessive non-syndromic hearing loss (ARNSHL) is the most common form of hereditary deafness. Hearing loss is more common in the developing countries which is due to genetic and environmental (cultural -health factors) reasons. HL has a wide range of clinical demonstrations including: congenital or late onset, conductive or sensory-neural, syndromic or non-syndromic hearing loss. The goal of this project is to determine the portion of the DFNB21 (TECTA) in ARNSHL in families with negative GJB2 gene in Khuzestan province.
Materials and Methods: We studied 21 families with ARNSHL with at least 4 patients and negative for GJB2 mutations from Khuzestan province. Genetic linkage analysis was performed using STR markers linked to DFNB21 locus.
Results: Following genetic linkage analysis and haplotyping, out of 21 families with ARNSHL, one family showed linkage to the DFNB21 (TECTA) locus.
Conclusion: The results of this project confirm other studies in Iran and give insight into the most common loci causing ARNSHL in Iran which could be helpful in research and clinic.
Ali Arjmand Shabestary, Mahmoud Khaloei, Mohammad Arjomandzadegan, Zahra Eslamirad, Reza Ghasemikhah,
Volume 20, Issue 8 (11-2017)
Abstract
Abstract
Background: Resistance of Acanthamoeba cysts causes recurrence of the disease; so, the patient should be monitored regularly ،The aim of the study was to examine the effect of a few herbal materials on Acanthamoeba cysts in vitro.
Materials and Methods: Essential oils (EOs) of Zataria, Mint, and Oregano were prepared by steam distillation. The EOs and Hypericum perforatum extract were prepared in three concentrations (0.6%, 1% and 10%)، Acanthamoeba cysts in various time intervals (30, 60, 120, 180 and 1440 minutes) were exposed with plant extracts. Then, the viability of parasite was investigated by eosin 0.1%.
Results: Comparison of the parasite mortality rate between control and case groups showed that the mortality of Acanthamoeba cysts was higher in the case groups that exposed to herbal materials. At the equal concentration (10%) and time (24 h), the Zataria and mint EOs produced the highest (22%) and lowest (4%) mortality, respectively. The results showed the mortality rate of Acanthamoeba was time-dependent.
Conclusion: Zataria showed the most fatality effect against Acanthamoeba cysts. In this respect, clinical trial studies are suggested.
