Background: The Anopheles culicifacies complex is one of the most important malaria vectors in Southeast Asia and Southeastern Iran. Although the sibling species within this complex are morphologically indistinguishable, they differ significantly in their disease transmission potential, blood-feeding behaviour, and other biological traits. Cytogenetic and chromosomal studies have identified five sibling species within this complex: A, B, C, D, and E.
View Article and Find Full Text PDFBackground: The study aims to determine the host preference for blood feeding among potential hosts of Anopheles stephensi in Iran, using the Multiplex-PCR method. An. stephensi is the primary malaria vector in urban areas of South Asia and the Middle East, including southern Iran, where approximately 30.
View Article and Find Full Text PDFLeishmaniasis is currently considered a major health problem in Iran, posing an increasing threat to society's development in various dimensions. This study aimed to detect infection in wild-caught sand flies in Sari City, northern Iran. Sand flies were collected using sticky traps, and DNA was identified using polymerase chain reaction (PCR) targeting the ITS2-rDNA region, followed by restriction fragment length polymorphism (RFLP) analysis.
View Article and Find Full Text PDFBackground: The black soldier fly (BSF), Hermetia illucens, is known for nutrient-recycling through the bioconversion of organic waste into protein-rich insect larvae that can be processed into an animal feed ingredient. However, information on species distribution and its genetic structure in Iran is scarce.
Methods And Results: We directed a survey on the Caspian Sea coast, with a reconstructing demographic relationships study using two parts of mitochondrial cytochrome C oxidase 1 (COI) gene (barcode and 3' end regions) and nuclear internal transcribed spacer 2 (ITS2) to identify BSF' genetic diversity in retrospect to the global diversity and the potential origin of the Iranian BSF population.
Interphase chromosomes reside within distinct nuclear regions known as chromosome territories (CTs). Recent observations from Hi-C analyses, a method mapping chromosomal interactions, have revealed varied decay in contact probabilities among different chromosomes. Our study explores the relationship between this contact decay and the particular shapes of the chromosome territories they occupy.
View Article and Find Full Text PDFBackground: The viability and persistence of engineered bacterium candidates in field conditions is one of the considerable challenges in the paratransgenesis approach to fighting vector-borne diseases.
Methods: In this study two engineered bacterium candidates to produce paratransgenic sand flies, AS1 and expressing m-Cherry fluorescent were applied on the leaves of the white saxaul plant (), sugar bait, and rodent burrow soil and their persistent time was tested in desert condition, Matin Abad County, Isfahan, August 2022. A PBS suspension of 10 cells/ml was used for sugar bait, spraying on plant leaves (∼10 cm) and 10 cm of rodent burrow soil.
Background: is the main vector of malaria in Iran. This study aimed to determine the susceptibility of from the south of Iran to bendiocarb and to investigate biochemical and molecular resistance mechanisms in this species.
Methods: Wild were collected from Hormozgan Province and reared to the adult stage.
The equine South African pointy vector mosquito, Aedes caballus, poses a significant threat to human health due to its capacity for transmitting arboviruses. Despite favorable climate for its existence in southeast Iran, previous records of this species in the area have indicated very low abundance. This comprehensive field and laboratory study aimed to assess its current adult population status in this region, utilizing a combination of ecological, morphological and molecular techniques.
View Article and Find Full Text PDFWolbachia is a maternally inherited intracellular bacterium that is considered to be the most plentiful endosymbiont found in arthropods. It reproductively manipulates its host to increase the chances of being transmitted to the insect progeny; and it is currently used as a means of suppressing disease vector populations or controlling vector-borne diseases. Studies of the dissemination and prevalence of Wolbachia among its arthropod hosts are important for its possible use as a biological control agent.
View Article and Find Full Text PDFIntroduction: Raw milk is a nutrient-rich food, but it may harbour harmful bacteria, such as enterotoxigenic Staphylococcus aureus (S. aureus), which can cause staphylococcal food poisoning. Antibiotic resistance of S.
View Article and Find Full Text PDFMembers of Sarcophagidae are necrophagous and are commonly found on decaying carcasses; and their developmental forms are important indicators for the approximation of lowest postmortem interval (PMImin). This work describes the biological characteristics of from Tehran, Iran. Various temperature regimes were applied to estimate the thermal summation constant (k) and thermal requirements for development of Five growth proceedings, containing 1st ecdysis, 2nd ecdysis, wandering, pupariation and eclosion, were investigated under eight fixed temperature regimes (6-30 °C).
View Article and Find Full Text PDFBreast cancer entails intricate alterations in genome organization and expression. However, how three-dimensional (3D) chromatin structure changes in the progression from a normal to a breast cancer malignant state remains unknown. To address this, we conducted an analysis combining Hi-C data with lamina-associated domains (LADs), epigenomic marks, and gene expression in an model of breast cancer progression.
View Article and Find Full Text PDF(Diptera: Psychodidae) is the main vector of zoonotic cutaneous leishmaniasis. is a symbiotic alphaproteobacteria of arthropods that can be involved in susceptibility or resistance. This study aimed to investigate the relationship between and Deltamethrin susceptibility/resistance in .
View Article and Find Full Text PDFAnopheles stephensi is an efficient vector of malaria parasites in Iran. Despite its importance in malaria transmission, there is a scarcity of accurate predictive models of its rates of development at different temperatures. A laboratory colony of An.
View Article and Find Full Text PDFVector-borne diseases, among them leishmaniasis, cause more than 700,000 deaths annually. The lack of an effective vaccination and the increasing resistance of sand flies to insecticides require the urgent development of innovative approaches to contain the disease. The use of engineered bacteria that express anti-parasite molecules (paratransgenesis) shows much promise.
View Article and Find Full Text PDFBackground: A combined morphological and molecular survey was performed to determine the agent of human linear dermatitis Fabricius, 1775 (Coleoptera: Staphylinidae, Paederinae) species composition in Mazandaran Province in the Caspian Sea coast in northern Iran, where most of linear dermatitis cases of the country occurred.
Methods: Altogether, 397 specimens were collected from May to August 2021 and classified using morphological characters and ITS2-rDNA sequence analysis.
Results: Morphological investigation revealed that all the specimens were ITS2 polymerase chain reaction (PCR) direct-sequences and the profiles of restriction fragment length polymorphism (RFLP) derived from digestion of PCR products by I, II, and I enzymes were identical confirming the morphological results, implying that all specimens belonged to a single taxon.
Background: The time required for PCR detection of DNA in human blood meals in vector mosquitoes may vary, depending on the molecular markers used, based on the size and copy number of the amplicons. Detailed knowledge of the blood-feeding behavior of mosquito populations in nature is an essential component for evaluating their vectorial capacity and for assessing the roles of individual vertebrates as potential hosts involved in the transmission of vector-borne diseases.
Methods: Laboratory experiments were conducted to compare the time course of PCR detection of DNA in human blood meals from individual blood-fed Anopheles stephensi mosquitoes, using loci with different characteristics, including two mitochondrial DNA (mtDNA) genes, cytB (228 bp) and 16S ribosomal RNA (rRNA) (157 bp) and nuclear Alu-repeat elements (226 bp) at different time points after the blood meal.
Multi-drug resistant bacteria are a major problem in the treatment of infectious diseases, such as pneumonia, meningitis, or even coronavirus disease 2019 (COVID-19). Cationic nanopolymers are a new type of antimicrobial agent with high efficiency. We synthesized and characterized cationic polymer based on 1,4-diazabicyclo [2.
View Article and Find Full Text PDFBackground And Objectives: The lactobacilli are abundant in honey, helping protect against pathogens and providing antimicrobial properties. This study aimed to isolate lactobacillus species from different honey regions and evaluate their potential probiotic properties.
Materials And Methods: Eighty-eight samples were collected from different regions, including the northern, central, and southern areas, and obtained through retail stores.
Cockroaches are significant pests worldwide, being important in medical, veterinary, and public health fields. Control of cockroaches is difficult because they have robust reproductive ability and high adaptability and are resistant to many insecticides. Wolbachia is an endosymbiont bacterium that infects the reproductive organs of approximately 70% of insect species and has become a promising biological agent for controlling insect pests.
View Article and Find Full Text PDFJ Arthropod Borne Dis
September 2022
Background: Ticks are blood-sucking ectoparasites of many vertebrates and act as vectors of a wide range of vector-borne diseases. Alongside pathogens transmission, ticks also cause economic losses in animal industry such as production loss, physical damage, anemia, and poisoning. This study aimed to determine the fauna, geographical distribution and seasonal activity of ticks collected from animals in Lorestan Province, west of Iran.
View Article and Find Full Text PDFIdentifying the sex of human hosts of insect disease vectors, using PCR amplification of the amelogenin gene (AMEL) from the ingested blood meal is an increasingly useful technique for epidemiological studies of vector-borne diseases, as well as within the criminal justice system. Detection of DNA from ingested blood is influenced by the choice of DNA extraction method, genomic target region, type and length of PCR, and rate of degradation in the DNA samples over time. Here, we have tested two types of PCR (i.
View Article and Find Full Text PDFThe use of Attractive Toxic Baits (ATBs) is considered to be a low-risk practical method for controlling cockroaches. This study evaluates the attractiveness of a lab-made, fipronil-containing bait, and its effect on the food consumption and mortality of the German cockroach Blattella germanica, under field and laboratory conditions. Different developmental stages of the cockroach were used to determine their preferred carbohydrate/protein rich foods and examine the effectiveness of lab-made baits.
View Article and Find Full Text PDFImmune-mediated inflammatory diseases (IMIDs) are a group of common heterogeneous disorders, characterized by an alteration of cellular homeostasis. Primarily, it has been shown that the release and diffusion of neurotransmitters from nervous tissue could result in signaling through lymphocyte cell-surface receptors and the modulation of immune function. This finding led to the idea that the neurotransmitters could serve as immunomodulators.
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