Measuring internal brand equity in B2B service industries in Iran

In the business-to-business sector, employees are playing a pivotal role in the success of corporate brands. Thus, measuring the internal brand equity in service industries can significantly highlight the potential role of the workforce in internal and external brand performance. To this end, 105 service firms were examined and empirical data was provided by a sample of 533 industrial workers and 208 managers, which was then analyzed. The main conclusions of this research lead us to confirm the positive relationship between determinants of internal brand equity and its influence on building strong internal and external brand equity. Conclusions are drawn for management practice and future research.info:eu-repo/semantics/publishedVersio

Blockade of the Naloxone-induced Aversion in Morphine-conditioned Wistar Rats by L-Arginine Intra-central Amygdala

AbstractObjective(s)Single injection of naloxone, a selective antagonist of morphine, prior to the drug conditioning testing was used to investigate on morphine dependence.Materials and MethodsConditioning to morphine (2.5-10 mg/kg, s.c.) was established in adult male Wistar rats (weighing 200-250 g) using an unbiased procedure. Nitric oxide agents were microinjected into the central amygdala prior to naloxone-paired place conditioning testing.ResultsThe results showed that morphine produced a significant dose-dependent place preference in animals. Naloxone (0.1-0.4 mg/kg, i.p.) injections pre-testing of the response to morphine (7.5 mg/kg, s.c.) caused a significant aversion at the higher doses (0.4 mg/kg, i.p.). This response was reversed by microinjection of L-arginine (0.3-3 µg/rat, intra-central amygdala) prior to naloxone on the day of the testing. The response to L-arginine was blocked by pre-injection of NG-nitro-L-arginine methyl ester (L-NAME) (intra-central amygdala).ConclusionA single injection of naloxone on the test day of morphine place conditioning may simply reveal the occurrence of morphine dependence in rats, and that the nitric oxide in the central amygdala most likely plays a key role in this phenomenon

Effect of Arnebia euchroma root extract on burn wound healing in Balb/c mice

زمینه و هدف: یکی از علل عمده مرگ و میر و ناتوانی در دنیا سوختگی و ضایعات حاصل از آن می باشد. از زمان های گذشته تاکنون درمان صحیح سوختگی مورد توجه اطباء بوده است و در مطالعات مختلف خواص برخی از گیاهان دارویی در بهبود زخم های سوختگی ثابت شده است. گیاه ابوخلسا یا هواچوبه (Arnebia euchroma) از گیاهانی است که غنی از آنتی اکسیدان می باشد و ممکن است در بهبود سوختگی موثر باشد. مطالعه حاضر با هدف تعیین اثر ابوخلسا بر بهبود زخم سوختگی درجه دو در موش کوچک آزمایشگاهی طراحی و اجرا شده است. روش بررسی: در این مطالعه ی تجربی، 105 سر موش کوچک آزمایشگاهی بالغ نر (5 گروه 20 تایی، 1 گروه 5 تایی) با وزن تقریبی 20 گرم مورد بررسی قرار گرفتند. موش ها در 5 گروه وازلین 1 گرم، سولفادیازین نقره 1 گرم، بدون مداخله، ابوخلسا 1 و ابوخلسا 10 روزانه 2 بار به مدت 21 روز تحت درمان موضعی سوختگی درجه 2 عمقی قرار گرفتند. اندازه زخم، درصد زخم و درصد بهبودی زخم در روزهای 7،14 و 21 بررسی شدند. داده ها با استفاده از آزمون های آماری کروسکال والیس و تعقیبی دان تجزیه و تحلیل شدند. یافته ها: بیشترین بهبودی به ترتیب در گروه های سولفادیازین نقره، بدون مداخله، وازلین، ابوخلسا 1 و ابوخلسا 10 مشاهده شد. گروه سولفادیازین نقره بیشترین اثر را در بین گروه های مطالعه نشان داد (05/0>P). نتیجه گیری: این مطالعه نشان داد که ریشه گیاه ابوخلسا نمی تواند در بهبود زخم سوختگی درجه دو در موش تأثیری داشته باشد و مطالعات بیشتری در خصوص ارزیابی انواع دیگر عصاره و دوزهای دیگر این گیاه در درمان سوختگی پیشنهاد می گردد

Environmental and Population Studies Concerning Exposure to Pesticides in Iran: A Comprehensive Review

Pesticides are widely used in Iranian agriculture and this has made a major toxicological concern among health professionals. The objective of this study is to explore national data about pesticides toxicity. All relevant databases such as Google Scholar, PubMed, and Scopus in a time period of 1960 to 2012 were searched for the keywords “Pesticides, Iran, Environment, and Population studies”. A total of 57 studies were found relevant and then included into study. Almost all non-experimental studies carried out in Iran were classified into two main categories of residue assessment in different samples and toxic effects on human. Depending on the dose and duration of exposure, toxic effects of pesticides have been studied in two classifications including acute toxicity or acute poisoning and chronic toxicity. High extent of pesticides have been used during the past decade in Iran while no enough proper studies were done to explore their possible toxic effects in the environment and the people

The Role of Nanomaterials in the Treatment of Diseases and Their Effects on the Immune System

Nanotechnology has been widely exploited in recent years in various applications. Different sectors of medicine and treatment have also focused on the use of nanoproducts. One of the areas of interest in the treatment measures is the interaction between nanomaterials and immune system components. Engineered nanomaterials can stimulate the inhibition or enhancement of immune responses and prevent the detection ability of the immune system. Changes in immune function, in addition to the benefits, may also lead to some damage. Therefore, adequate assessment of the novel nanomaterials seems to be necessary before practical use in treatment. However, there is little information on the toxicological and biological effects of nanomaterials, especially on the potential ways of contacting and handling nanomaterials in the body and the body response to these materials. Extensive variation and different properties of nanomaterials have made it much more difficult to access their toxicological effects to the present. The present study aims to raise knowledge about the potential benefits and risks of using the nanomaterials on the immune system to design and safely employ these compounds in therapeutic purposes

Effect of CO2 Laser on the Prevention of White Spot Lesions During Fixed Orthodontic Treatment: A Randomized Clinical Trial

Objective:This study aimed to assess the effect of carbon dioxide (CO2) laser on prevention of white spot lesions (WSLs) associated with fixed orthodontic treatment.Methods:In this parallel controlled trial, 554 maxillary anterior teeth in 95 patients with age range of 12-30 years were included. The samples were randomly divided in two groups: 1) CO2 laser (n=278) and 2) control (n=276) groups. Following bracket attachment, the teeth in the laser group were exposed to CO2 laser (0.4 mw, 10.6 μm, 5 Hz) for 20 s, and the control group received placebo light. Incidence, severity, and extent of the lesions were assessed in four surface regions (gingival, incisal, mesial, and distal) at baseline and 6 months post-irradiation. The inter-group comparison was performed by the Mann-Whitney U test and McNemar analysis.Results:A significant difference regarding WSLs incidence in all teeth was observed between the two study groups (p<0.001). The two study groups illustrated a significant difference in lesion extent and incidence in incisal, mesial, and distal regions (p<0.05). The WSLs were significantly different in terms of severity in the incisal and mesial sites (p<0.05).Conclusion:The CO2 laser irradiation seemed to effectively prevent incidence of WSLs. In addition, its effectiveness varied depending on the surface region

The predictors of spiritual dryness among Iranian cancer patients during the COVID-19 pandemic

BackgroundSpiritual struggles affect the wellbeing of religious people. Among them are strugglers with God which is perceived as non-responsive and distant. These perceptions were so far analyzed predominantly in Western societies with a Christian background, but not in Muslims from Iran. The aim of this study was to determine the predictors of spiritual dryness among cancer patients in Iran during the COVID-19 pandemic.MethodsCross-sectional study with standardized questionnaires (i.e., Spiritual Dryness Scale, WHO-5, BMLSS-10, Awe/Gratitude Scale) among 490 cancer patients (mean age 49.50 ± 14.92 years) referring to the selected educational hospitals in Tehran (the capital of Iran), who were selected through convenience sampling and based on the inclusion criteria, enrolled between December 2020–May 2021. Data analysis was done using SPSS software version 26 and the statistical methods including calculating the mean and the standard deviation, correlation coefficients, as well as regression analysis.ResultsThe overall experience of spiritual dryness was perceived regularly in 10.2% of Iranian cancer patients, sometimes in 22.9%, rarely in 22.9%, and never in 43.3%. The mean ± SD was 25.66 ± 5.04, and the scores ranged from 10 to 55. A higher score means greater spiritual dryness. The strongest predictors of spiritual dryness were praying activities Furthermore, the perception of burden due to the pandemic was positively correlated with spiritual dryness. Moreover, each 1 unit increase in its score changed the spiritual dryness score by 0.2 units. The regression of spirituality-related indicators, demographic-clinical variables, and health-related behaviors accounted for 21, 6, and 4% of the total SDS variance, respectively. These findings show that with an increase in praying, performing daily prayers, and the indicators related to spirituality, spiritual dryness will decrease. Most patients were able to cope with these phases often or even regularly, while 31.1% were never or rarely only able to cope.ConclusionThe results of this study showed that in times of crisis, cancer patients’ faith and confidence in God could be challenged. It is not the disease itself which seems to be associated with this form of crisis, but their religious practices. Therefore, it is necessary to support these patients during their struggle, especially as spirituality is one of the best approaches to cope with the disease

Analysis of SNPs and Haplotypes in Vitamin D Pathway Genes and Renal Cancer Risk

In the kidney vitamin D is converted to its active form. Since vitamin D exerts its activity through binding to the nuclear vitamin D receptor (VDR), most genetic studies have primarily focused on variation within this gene. Therefore, analysis of genetic variation in VDR and other vitamin D pathway genes may provide insight into the role of vitamin D in renal cell carcinoma (RCC) etiology. RCC cases (N = 777) and controls (N = 1,035) were genotyped to investigate the relationship between RCC risk and variation in eight target genes. Minimum-p-value permutation (Min-P) tests were used to identify genes associated with risk. A three single nucleotide polymorphism (SNP) sliding window was used to identify chromosomal regions with a False Discovery Rate of <10%, where subsequently, haplotype relative risks were computed in Haplostats. Min-P values showed that VDR (p-value = 0.02) and retinoid-X-receptor-alpha (RXRA) (p-value = 0.10) were associated with RCC risk. Within VDR, three haplotypes across two chromosomal regions of interest were identified. The first region, located within intron 2, contained two haplotypes that increased RCC risk by approximately 25%. The second region included a haplotype (rs2239179, rs12717991) across intron 4 that increased risk among participants with the TC (OR = 1.31, 95% CI = 1.09–1.57) haplotype compared to participants with the common haplotype, TT. Across RXRA, one haplotype located 3′ of the coding sequence (rs748964, rs3118523), increased RCC risk 35% among individuals with the variant haplotype compared to those with the most common haplotype. This study comprehensively evaluated genetic variation across eight vitamin D pathway genes in relation to RCC risk. We found increased risk associated with VDR and RXRA. Replication studies are warranted to confirm these findings

Comprehensive Analysis of 5-Aminolevulinic Acid Dehydrogenase (ALAD) Variants and Renal Cell Carcinoma Risk among Individuals Exposed to Lead

BACKGROUND: Epidemiologic studies are reporting associations between lead exposure and human cancers. A polymorphism in the 5-aminolevulinic acid dehydratase (ALAD) gene affects lead toxicokinetics and may modify the adverse effects of lead. METHODS: The objective of this study was to evaluate single-nucleotide polymorphisms (SNPs) tagging the ALAD region among renal cancer cases and controls to determine whether genetic variation alters the relationship between lead and renal cancer. Occupational exposure to lead and risk of cancer was examined in a case-control study of renal cell carcinoma (RCC). Comprehensive analysis of variation across the ALAD gene was assessed using a tagging SNP approach among 987 cases and 1298 controls. Occupational lead exposure was estimated using questionnaire-based exposure assessment and expert review. Odds ratios (OR) and 95% confidence intervals (CI) were calculated using logistic regression. RESULTS: The adjusted risk associated with the ALAD variant rs8177796(CT/TT) was increased (OR = 1.35, 95%CI = 1.05-1.73, p-value = 0.02) when compared to the major allele, regardless of lead exposure. Joint effects of lead and ALAD rs2761016 suggest an increased RCC risk for the homozygous wild-type and heterozygous alleles ((GG)OR = 2.68, 95%CI = 1.17-6.12, p = 0.01; (GA)OR = 1.79, 95%CI = 1.06-3.04 with an interaction approaching significance (p(int) = 0.06). No significant modification in RCC risk was observed for the functional variant rs1800435(K68N). Haplotype analysis identified a region associated with risk supporting tagging SNP results. CONCLUSION: A common genetic variation in ALAD may alter the risk of RCC overall, and among individuals occupationally exposed to lead. Further work in larger exposed populations is warranted to determine if ALAD modifies RCC risk associated with lead exposure

Telomere structure and maintenance gene variants and risk of five cancer types.

Telomeres cap chromosome ends, protecting them from degradation, double-strand breaks, and end-to-end fusions. Telomeres are maintained by telomerase, a reverse transcriptase encoded by TERT, and an RNA template encoded by TERC. Loci in the TERT and adjoining CLPTM1L region are associated with risk of multiple cancers. We therefore investigated associations between variants in 22 telomere structure and maintenance gene regions and colorectal, breast, prostate, ovarian, and lung cancer risk. We performed subset-based meta-analyses of 204,993 directly-measured and imputed SNPs among 61,851 cancer cases and 74,457 controls of European descent. Independent associations for SNP minor alleles were identified using sequential conditional analysis (with gene-level p value cutoffs ≤3.08 × 10-5 ). Of the thirteen independent SNPs observed to be associated with cancer risk, novel findings were observed for seven loci. Across the DCLRE1B region, rs974494 and rs12144215 were inversely associated with prostate and lung cancers, and colorectal, breast, and prostate cancers, respectively. Across the TERC region, rs75316749 was positively associated with colorectal, breast, ovarian, and lung cancers. Across the DCLRE1B region, rs974404 and rs12144215 were inversely associated with prostate and lung cancers, and colorectal, breast, and prostate cancers, respectively. Near POT1, rs116895242 was inversely associated with colorectal, ovarian, and lung cancers, and RTEL1 rs34978822 was inversely associated with prostate and lung cancers. The complex association patterns in telomere-related genes across cancer types may provide insight into mechanisms through which telomere dysfunction in different tissues influences cancer risk.Funding for the iCOGS infrastructure came from: the European Community’s Seventh Framework Programme under grant agreement n° 223175 (HEALTH-F2-2009-223175) (COGS), Cancer Research UK (C1287/A10118, C1287/A 10710, C12292/A11174, C1281/A12014, C5047/A8384, C5047/A15007, C5047/A10692, C8197/A16565), the National Institutes of Health (CA128978) and Post-Cancer GWAS initiative (1U19 CA148537, 1U19 CA148065 and 1U19 CA148112 – the GAME-ON initiative), the Department of Defense (W81XWH-10-1-0341), the Canadian Institutes of Health Research (CIHR) for the CIHR Team in Familial Risks of Breast Cancer, Komen Foundation for the Cure, the Breast Cancer Research Foundation, and the Ovarian Cancer Research Fund.This is the author accepted manuscript. The final version is available from Wiley via http://dx.doi.org/10.1002/ijc.3028