How might cancer patients experience existential guilt? A qualitative research.

OBJECTIVES: Existential guilt is a deep and multidimensional concept that is correlated with concepts, such as in/authenticity, existential anxiety, decisiveness, and personal and social responsibility. The aim of the present study is to investigate the experience of existential guilt among cancer patients. METHODS: The present research was conducted with a qualitative method with a content analysis design. A purposeful sampling method was used to select the participants and the sampling procedure went on until we reached data saturation. Data were obtained using semi-structured interviews with the participants. RESULTS: From a total of 18 interviews, 94 codes related to existential guilt were obtained. After the analysis, three main concepts were extracted: (1) incompleteness, (2) passivity, and (3) feelings of harm to self and others. Each of these had a number of subcategories. SIGNIFICANCE OF RESULTS: The participants of the present research were found to experience existential guilt in different ways. The research showed that it is necessary to find the sources of existential guilt in order that effective therapeutic attention can be given cancer patients.

Influence of the erineum strain of Colomerus vitis (Acari: Eriophyidae) on grape (Vitis vinifera) defense mechanisms.

Grape (Vitis vinifera) is commonly affected by the erineum strain of Colomerus vitis (GEM) in Iran and the susceptibility of grape cultivars to GEM is poorly understood. In order to evaluate the impact of GEM on grape and its defense mechanisms against the mite, an exploratory study was carried out on 19 cultivars (18 Iranian and the non-native Muscat Gordo). The differential susceptibility of cultivars to GEM was compared on the basis of the area of leaf damage induced by GEM. The cultivars White Thompson seedless of Bovanat, Atabaki Zarghan, Koladari Ghoochan and Sahebi Uroomie were less susceptible to GEM, whereas Ghalati Dodaj, Rishbaba, Muscat Gordo and Neyshaboori Birjand appeared to be the most affected by the mite. In a no-choice setup, plants of selected cultivars of these two groups were infested by GEM and assayed for 10 biomarkers usually related to plant stress mechanisms against plant feeders: the activity of defense enzymes-peroxidase (POX), polyphenol oxidase (PPO), superoxide dismutase (SOD), phenylalanine ammonia-lyase (PAL), catalase (CAT), the amount of total polyphenolics, total flavonoids, total soluble carbohydrates, hydrogen peroxide (H2O2), and malondialdehyde (MDA) expressing lipid peroxidation. The biomarkers were assessed in grape leaves 7 days before releasing the mites, as well as 7, 14 and 28 days after infestation (DAI). The activity of the enzymes and the amount of the compounds usually increased in percentage after mite infestation. A significant negative correlation was found between the area of leaf damage and PPO, POX, SOD, MDA and H2O2 for all sampling dates. The area of leaf damage showed a significant positive correlation with total soluble carbohydrates at 28 DAI, and significant negative correlations with CAT (at 14 and 28 DAI), PAL and total flavonoids (at 7 DAI). No correlation was observed between area of leaf damage and total polyphenolics. The biomarkers PPO, SOD, CAT activity and H2O2 provided the best explanation for the response of grape cultivars to GEM infestation.

Ectoparasites of Rodents Captured in Hamedan, Western Iran.

BACKGROUND: Rodents with a population greater than the entire population of other mammals on earth are the source of economic losses and health conflicts. One of the major health problems with the rodents is their role as reservoir hosts of zoonotic diseases. The aim of this study was to assess the infestation of commensal rodents with ectoparasites in Hamedan City, Western Iran. METHODS: The samples were collected by live traps during years 2012-2013. After transferring the samples to the Entomological Laboratory of Hamedan University of Medical Sciences, their ectoparasites were collected and identified. RESULTS: A total of 171 slides were prepared from 105 captured commensal rodents: Mus musculus, Rattus rattus and R. norvegicus comprising three orders namely Mesostigmata: Hypoaspis (Laelaspis) astronomica, Dermanyssius sp, Pachylaelapidae (male). Metastigmata: Rhipicephalus sp and Anoplura: Polyplax spinulosa were recovered in Hamedan City. Seventy (66.6%) rodents were found infested with at least one species of ectoparasites. CONCLUSION: The results of our study indicate that ectoparasites infestation in commensal rodents of Hamedan city is high and more attention by local health authorities is needed to prevent zoonotic diseases.

New species of Hypoaspis Canestrini and Coleolaelaps Berlese (Mesostigmata: Laelapidae) associated with Polyphylla olivieri Castelnau (Coleoptera: Scarabaeidae) in Iran .

White grubs, including Polyphylla olivieri Castelnau, are among the most economically important pests of orchard trees and other crops such as potato and sugar beet. The larvae feed on the roots of the host plants and their adults feed on the leaves. Several types of organisms are parasitic or phoretic on this pest, including three species of mites from Iran. Two new species of mites, namely Hypoaspis (Hypoaspis) surii n. sp. and Coleolaelaps massoumii n. sp. are described here from the adults of P. olivieri in Hamedan, Iran. Hypoaspis polyphyllae Khanjani & Ueckermann was previously described from the larva of this species of beetle.