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1.
Nurs Ethics ; : 9697330231184469, 2023 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-37599451

RESUMEN

BACKGROUND: Professional misconduct undermines safe and quality care; however, little is known about its nature and influential factors. AIM: This study aimed to explain the factors influencing professional misconduct in nurses. RESEARCH DESIGN: This qualitative study was conducted using the conventional content analysis method. PARTICIPANTS AND RESEARCH CONTEXT: Data were collected using semi-structured interviews with 19 nurses working in the hospital selected through a purposeful method and analyzed by Graneheim and Lundman approach. ETHICAL CONSIDERATIONS: The ethics committee of Tehran University of Medical Sciences approved this study with the ethics code IR.TUMS.FNM.REC.1400.187. Informed consent was obtained from all participants. Participants were assured of confidentiality. FINDINGS: Factors influencing professional misconduct by nurses were categorized into three main categories: human factors (nurses' professional characteristics, personal characteristics of nurses and patient/companion, patient's clinical condition), procedural factors (procedural conditions, possibility of proving misconduct), and organizational factors (recruitment process, conditions of resources, managing misconduct, bureaucracy, and ward characteristics). CONCLUSION: This study assists in explaining the factors influencing professional misconduct by nurses. Therefore this study's results can help managers and planners develop interventions to prevent and correct factors that contribute to misconduct and strengthen factors that prevent misconduct in order to ensure quality and safe patient care.

2.
Prostate Int ; 11(2): 76-82, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-37409091

RESUMEN

Background: The use of electronic cigarettes (e-cigarettes), the alternative to conventional smoking, is increasing considerably worldwide; however, their safety is a matter of debate. Several studies have demonstrated their toxic effects, but no study assessed their effects on the prostate. Objective: The current study aimed at evaluating e-cigarettes and conventional smoking prostate toxicity and effects on the expression of vascular endothelial growth factor A (VEGFA), phosphatase and tensin (PTEN), and prostate transmembrane protein androgen induced 1 (PMEPA1). Method: 30 young Wistar rats were categorized into three groups (n = 10) as follows: the control group, the conventional smoking group, and the e-cigarette group. The case groups were exposed to cigarettes or e-cigarettes for 40 minutes, 3 times a day for four months. Serum parameters, prostate pathology, and gene expression were measured at the end of the intervention. Data were analyzed by Graph Pad prism 9. Results: Histopathological findings presented that both types of cigarette-induced hyperemia and induced inflammatory cell infiltration and hypertrophy of smooth muscle of the vascular wall in the e-cigarette group. Expression of PMEPA1, and VEGFA genes significantly increased in conventional (2.67-fold; P = 0.0108, 1.80-fold; P = 0.0461 respectively) and e-cigarettes (1.98-fold; P = 0.0127, 1.34-fold; P = 0.938, respectively) groups compared to the control group. Expression of the PTEN gene non-significantly decreased in the case of groups compared to the control group. Conclusion: We found no significant differences between the two groups in terms of PTEN and PMEPA1 expression, whereas VEGFA was significantly more expressed in a conventional smoking group compared to the e-cigarette group. Therefore, it seems that e-cigarettes could not be taken into account as a better option than conventional smoking, and quitting smoking still is the optimal option.

3.
Arch Public Health ; 81(1): 70, 2023 Apr 26.
Artículo en Inglés | MEDLINE | ID: mdl-37101304

RESUMEN

BACKGROUND: Prostate cancer (PCa) is one of the most prevalent cancers worldwide, with a significant burden on societies and healthcare providers. We aimed to develop a metric for PCa quality of care that could demonstrate the disease's status in different countries and regions (e.g., socio-demographic index (SDI) quintiles) and assist in improving healthcare policies. METHODS: Basic burden of disease indicators for various regions and age-groups were retrieved from Global Burden of Disease Study 1990-2019, which then were used to calculate four secondary indices: mortality to incidence ratio, DALYs to prevalence ratio, prevalence to incidence ratio, and YLLs to YLDs ratio. These four indices were combined through a principal component analysis (PCA), producing the quality of care index (QCI). RESULTS: PCa's age-standardized incidence rate increased from 34.1 in 1990 to 38.6 in 2019, while the age-standardized death rate decreased in the same period (18.1 to 15.3). From 1990 to 2019, global QCI increased from 74 to 84. Developed regions (high SDI) had the highest PCa QCIs in 2019 (95.99), while the lowest QCIs belonged to low SDI countries (28.67), mainly from Africa. QCI peaked in age groups 50 to 54, 55 to 59, or 65 to 69, depending on the socio-demographic index. CONCLUSIONS: Global PCa QCI stands at a relatively high value (84 in 2019). Low SDI countries are affected the most by PCa, mainly due to the lack of effective preventive and treatment methods in those regions. In many developed countries, QCI decreased or stopped rising after recommendations against routine PCa screening in the 2010-2012 period, highlighting the role of screening in reducing PCa burden.

4.
Front Genet ; 13: 913908, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35846117

RESUMEN

Objective: This study explores associations between recurrent kidney stones and genetic polymorphisms. Methods: Meta-analysis of polymorphisms in renal stone cases versus control groups. Four electronic databases (PubMed, SCOPUS, EMBASE, and Web of Science) were searched up to 30 May 2021, using the keywords: "kidney stone" or "kidney calculi," or "urolithiasis" or "nephrolithiasis" or "urinary calculi" and "genome" or "genetic" or "mutation" or "single nucleotide polymorphism." Forrest plots, ORs, 95% CI, Chi-square (χ2)-test, and index of heterogeneity (I2) were calculated. Only studies with Newcastle-Ottawa scale (NOS) ≥ 6 were included for quality control, and Funnel, Begg's, and Eager's plots assessed publication bias. PROSPERO: CRD42022250427. Results: Among 7,671 searched articles, 72 were included. Polymorphisms in VDR (OR: 1.20; 95% CI: 1.06-1.36), CASR (OR = 1.24; 95% CI: 1.01-1.52), Osteopontin (OR = 1.38; 95% CI: 1.09-1.74), and Urokinase genes (OR = 1.52; 95% CI: 1.02-2.28) showed a significant association with risk of urinary stone formation, while Klotho gene showed a protective effect (OR = 0.75; 95% CI: 0.57-0.99). The VDR gene polymorphism was frequent in Asians, whereas CASR polymorphism was frequent in European and North American populations. Conclusion: Multifactorial nature of the stone formation, emphasizing the role of environmental factors, might explain contradictory results in the literature. While polymorphisms in VDR, CASR, Osteopontin, and Urokinase genes were associated with urinary stone formation, the Klotho gene showed a protective effect.

5.
BMC Med Genomics ; 15(1): 109, 2022 05 11.
Artículo en Inglés | MEDLINE | ID: mdl-35546405

RESUMEN

OBJECTIVES: Recurrent Kidney stone formation is a main medical problem imposing a significant burden on both healthcare and the economy worldwide. Environmental and genetic factors have been linked to a bigger risk of kidney stone formation. We aim to assess the role of methylation on recurrent stone formation in three target genes. METHODS: We aimed to check the association between promoter hypermethylation vitamin D receptor (VDR), calcium-sensing receptor (CaSR), and claudin 14 (CLDN14) genes in recurrent kidney stones. We enrolled 30 consecutive recurrent kidney stone formers (age 18-60 years) (cases) and 30 age and gender-matched controls.3. To identify promoter methylation, two target regions from each candidate gene were bisulfited after blood collection and DNA extraction. Methylation quantification was done through methylation-specific high resolution melting (MS-HRM). RESULTS: The mean age of the patients and controls (mean ± SD) was 49.58 ± 14.23 years and BMI 36.12 ± 2.72. The methylation status in all six target regions was meaningfully different between the stone-former group and controls when methylation was considered in three clusters of unmethylated, methylated, and hypermethylated. A higher effect in VDR and CLDN was observed compare to CasR (p-value < 0.001, and < 0.005 versus p-value < 0.256). CONCLUSIONS: Methylation as an important epigenetic mechanism should be considered more in recurrent stone formations. Promoter hypermethylation of VRD and CLDN genes may have an essential role in recurrent kidney stones formations.


Asunto(s)
Cálculos Renales , Receptores de Calcitriol , Adolescente , Adulto , Claudinas , Metilación de ADN , Femenino , Humanos , Cálculos Renales/genética , Masculino , Persona de Mediana Edad , Regiones Promotoras Genéticas , Receptores de Calcitriol/genética , Receptores de Calcitriol/metabolismo , Receptores Sensibles al Calcio/genética , Receptores Sensibles al Calcio/metabolismo , Adulto Joven
6.
Nutr Metab Cardiovasc Dis ; 32(6): 1528-1537, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35365371

RESUMEN

BACKGROUND AND AIMS: Atherosclerosis as a chronic inflammatory disorder of the arterial wall is the main leading cause of the cardiovascular disease (CVD). Caspase-dependent pyroptosis plays a pivotal role in the pathogenesis of CVD. Selenium (Se) is an important component of the antioxidant defense and plays a crucial role in cardiovascular health. This study aimed to investigate the effects of daily consumption of sodium selenite and Se-enriched yeast on the expression of pyroptosis-related genes, and biomarkers of oxidative stress in patients with atherosclerosis. METHODS AND RESULTS: In this randomized, double-blinded, placebo-controlled clinical trial, 60 patients with atherosclerosis were recruited. Participants received 200 µg/day of sodium selenite, Se-enriched yeast, or placebo for 8 following weeks. The pyroptosis-related genes' mRNA expression in peripheral blood mononuclear cells (PBMCs) was assessed before and after the intervention. Also, the levels of superoxide dismutase (SOD), malondialdehyde (MDA), nitric oxide (NO), and glutathione peroxidases (GPX) were measured at baseline and following the intervention. Following sodium selenite and Se-enriched yeast supplementation, the relative expression levels of TLR4, ASC, NLRP3, and NF-κB1 were significantly downregulated (p < 0.05). Furthermore, the changes in GPX were significantly increased after selenite and yeast supplementation (p < 0.05). Also, selenite and yeast consumption caused a statistically significant decrease in the change of MDA level (p < 0.05). CONCLUSION: In summary, these findings showed that Se supplementation may reduce inflammation through down-regulation of some pro-inflammatory genes, improving antioxidant defenses in atherosclerosis patients. Further research is required to come to a definite conclusion of selenium supplementation on the CVD risk. This study was registered on the Iranian Registry of Clinical Trials website (identifier: RCT20110123005670N28; https://www.irct.ir/).


Asunto(s)
Aterosclerosis , Selenio , Antioxidantes/efectos adversos , Antioxidantes/metabolismo , Aterosclerosis/diagnóstico , Aterosclerosis/tratamiento farmacológico , Aterosclerosis/genética , Suplementos Dietéticos/efectos adversos , Glutatión Peroxidasa/genética , Humanos , Irán , Leucocitos Mononucleares/metabolismo , Estrés Oxidativo , Piroptosis , Saccharomyces cerevisiae/metabolismo , Selenio/efectos adversos , Selenito de Sodio/efectos adversos , Selenito de Sodio/metabolismo
7.
Front Endocrinol (Lausanne) ; 13: 1043894, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36589796

RESUMEN

Background: Obesity and its increasing burden have become an urgent health problem all over the world. Benefiting from a national representative sample, the present study aimed to estimate the distribution of body mass index (BMI) levels and its association with metabolic and lifestyle risk factors in an Iranian adult population by sex, age, and geographical distribution. Methods: This study involves a national survey of noncommunicable disease risk factor surveillance (STEPs) in Iran. Through systematic random sampling, in compliance with safety considerations during the COVID-19 pandemic, of the 28,520 adults who gave voluntary consent and included in the study, 27,874 participants completed the questionnaires (step 1), 27,745 individuals were anthropometrically measured (step 2), and 18,119 individuals completed laboratory evaluation (step 3). Anthropometric measurements followed based on standard protocols and by using calibrated instruments. Results: In 2021, the national prevalence of normal weight, obesity, and overweight/obesity in ≥18-year-old Iranian adults was estimated at 33.61% (95% CI: 32.99-34.23), 24.96% (24.39-25.53), and 63.02% (62.39-63.65), respectively. Compared to women, Iranian men had a lower mean BMI [25.54 (24.95-26.13 vs. 27.6 (27.07-28.12) kg/m2] (p < 0.001). There was also a significant difference in the national prevalence rate of overweight/obesity [women: 66% (61-71), men: 53% (46-60) (p < 0.001)]. The prevalence of obesity was significantly higher in participants suffering from metabolic and lifestyle risk factors. The study of the geographical extent of obesity and overweight shows that compared to national levels, the highest prevalence of being underweight was seen in the southeastern provinces. On the other hand, the highest prevalence of obesity belonged to the northeastern and central provinces. The highest provincial prevalence of obesity was almost 2.5-fold higher than the lowest provincial prevalence. Conclusion: The study reveals a significant difference between the prevalence of obesity in male and female participants and between different regions of the country. These findings will help policymakers, clinicians, and researchers to more accurately estimate the obesity/overweight problem and to implement more effective interventional programs to promote strategies of prevention and control of weight gain.


Asunto(s)
COVID-19 , Sobrepeso , Adulto , Femenino , Masculino , Humanos , Adolescente , Sobrepeso/epidemiología , Irán/epidemiología , Índice de Masa Corporal , Pandemias , COVID-19/epidemiología , Obesidad/epidemiología , Encuestas y Cuestionarios
8.
Biomed Res Int ; 2021: 5313832, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34485513

RESUMEN

BACKGROUND: Coinfections have a potential role in increased morbidity and mortality rates during pandemics. Our investigation is aimed at evaluating the viral coinfection prevalence in COVID-19 patients. METHODS: We systematically searched scientific databases, including Medline, Scopus, WOS, and Embase, from December 1, 2019, to December 30, 2020. Preprint servers such as medRxiv were also scanned to find other related preprint papers. All types of studies evaluating the viral coinfection prevalence in COVID-19 patients were considered. We applied the random effects model to pool all of the related studies. RESULTS: Thirty-three studies including 10484 patients were identified. The viral coinfection estimated pooled prevalence was 12.58%; 95% CI: 7.31 to 18.96). Blood viruses (pooled prevalence: 12.48%; 95% CI: 8.57 to 16.93) had the most frequent viral coinfection, and respiratory viruses (pooled prevalence: 4.32%; 95% CI: 2.78 to 6.15) had less frequent viral coinfection. The herpesvirus pooled prevalence was 11.71% (95% CI: 3.02 to 24.80). Also, the maximum and minimum of viral coinfection pooled prevalence were in AMRO and EMRO with 15.63% (95% CI: 3.78 to 33.31) and 7.05% (95% CI: 3.84 to 11.07), respectively. CONCLUSION: The lowest rate of coinfection belonged to respiratory viruses. Blood-borne viruses had the highest coinfection rate. Our results provide important data about the prevalence of blood-borne viruses among COVID-19 patients which can be critical when it comes to their treatment procedure.


Asunto(s)
COVID-19/epidemiología , Coinfección/epidemiología , Coinfección/virología , Humanos , Pandemias/prevención & control , Prevalencia , SARS-CoV-2/patogenicidad , Virosis/epidemiología , Virosis/virología , Virus/patogenicidad
9.
J Educ Health Promot ; 10(1): 202, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34250136

RESUMEN

BACKGROUND: The outbreak of new pathogens or the resurgence of pathogens that have already spread is a serious challenge to public health. Coronavirus is a pathogen that seems to invade the human respiratory system in the first place. Coronaviruses form a large family and are so called because of the presence of crown like cristae on their surface. MATERIALS AND METHODS: This is a cross-sectional, descriptive study conducted to assess the status of patients with COVID-19 who were hospitalized in an educational hospital. For this purpose, 142 patients hospitalized in this hospital were followed up 2 weeks after discharge and were inquired about the symptoms they had upon admission to the hospital, the number of hospitalization days, the history of underlying disease, and so on. Descriptive data analysis was done with the SPSS software version 22. RESULTS: The findings of this research showed that overweight or obese people (about 66%) is more likely to contract the disease. It also seems that older people (37.3% older than 60 years old) and those with a history of diseases (69.6%) such as diabetes, high blood pressure, or heart disease are more prone to COVID-19. The most common symptoms of COVID-19 patients included fever (64.5%), shortness of breath (67.4%), and dry cough (50.4%). CONCLUSION: it seems that high risk group (obese people, old people, and people with a history of disease) is more likely to be infect with coronavirus so they should more careful than others. Another important issue is that policy-makers must play an active role in public awareness of dangers of COVID-19 and ways to prevent it.

10.
Cytokine ; 143: 155511, 2021 07.
Artículo en Inglés | MEDLINE | ID: mdl-33839001

RESUMEN

PURPOSE: The slow coronary flow (SCF) was identified as delayed opacification of epicardial coronary arteries in the absence of stenotic lesion. Metabolic syndrome (MetS), oxidative stress, and inflammation may be possible known insulting factors for the pathogenesis of SCF. This investigation aimed to assess the relationship between some inflammatory markers, oxidative stress parameters and MetS components with SCF phenomenon. METHODS: A total of 35 patients with SCF and 35 subjects with normal coronary flow (NCF) were included in the study. We assessed some inflammatory markers (IL-1ß, IL-18, TNF-α, and NF-κB mRNA expression in peripheral blood mononuclear cells (PBMCs)). Moreover, blood samples of the participants were tested for total antioxidant capacity (TAC), glutathione peroxidase (GPX) and nitric oxide (NO) levels using enzyme-linked immunosorbent assay (ELISA). Diagnosis of MetS was based on the National Cholesterol Education Program's Adult Treatment Panel III report (ATPIII) criteria, 2005. Diagnostic criteria for coronary flow rates of all subjects were documented by thrombolysis in myocardial infarction (TIMI) frame count method. RESULTS: SCF patients had significantly higher prevalence of MetS (46%, p = 0.048).We found that the level of TAC was significantly higher in the NCF group (p = 0.006). Furthermore, the NO concentration was significantly lower in SCF groups (p = 0.001). A significant incremental difference was detected in IL-1ß (fold change 2.82 ± 0.31, p < 0.05) and NF-κB (fold change 4.62 ± 0.32, p < 0.05) mRNA expression in the SCF group when compared with its level in the NCF group. Furthermore, according to logistic regression analysis, there were significant associations between IL-1ß, NF-κB expression levels and the incidence of SCF (p < 0.05). CONCLUSION: Based on the findings of this study, the pathogenesis of the SCF phenomenon may be closely associated with metabolic syndrome and inflammation. The NF-κB/IL-1ß/nitric oxide & MetS signaling pathway might be considered as potential therapeutic targets in the management of SCF patients but further researches is required to guarantee these findings.


Asunto(s)
Circulación Coronaria/fisiología , Inflamación/metabolismo , Interleucina-1beta/metabolismo , FN-kappa B/metabolismo , Óxido Nítrico/metabolismo , Transducción de Señal , Antioxidantes/metabolismo , Intervalos de Confianza , Citocinas/genética , Citocinas/metabolismo , Femenino , Glutatión Peroxidasa/metabolismo , Humanos , Masculino , Persona de Mediana Edad , Oportunidad Relativa , ARN Mensajero/genética , ARN Mensajero/metabolismo
11.
Afr Health Sci ; 21(4): 1677-1684, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35283944

RESUMEN

Background: Proteus mirabilis is a frequent reason for catheter-associated urinary tract infections (UTIs). The aim of this study was to identify virulence genes and antimicrobial resistance patterns in P. mirabilis strains isolated from patients who attended a tertiary hospital in Iran. Methods: In this study, 100 P. mirabilis strains from urine samples were isolated. These isolated strains were identified by biochemical and PCR-based tests, and their antibiotic resistance was profiled through a standard procedure using 14 antibiotics. PCR assays were used to detect virulence-related genes in P. mirabilis strains. The biofilm formation of each P. mirabilis strain was examined. Results: Of the 100 P. mirabilis isolates, 16 (16%) were multidrug-resistant. High resistance was observed against cotrimoxazole (97%), nalidixic acid (93%), cefotaxime (77%), and amoxicillin (62%). Sixty of the 100 isolates showed resistance against extended-spectrum cephalosporins. The prevalence rates of the genes related to the virulence factors in this study were mrpH (100%), ucaA (91%), hpmA (94%), zapA (95%), ptaA (100%), ureG (100%), pmfA (100%), fliC (97%), and mrpA (90%) using PCR method. Strong biofilm formation was observed in 20% (5/25) of the strains isolated from non-catheterized samples and 80% (20/25) of strains isolated from catheterized samples. Conclusions: Resistance to antibiotics and the prevalence of pathogenicity genes are high in Proteus mirabilis strains iolated from UTIs.


Asunto(s)
Proteus mirabilis , Infecciones Urinarias , Antibacterianos/farmacología , Farmacorresistencia Bacteriana/genética , Humanos , Irán/epidemiología , Proteus mirabilis/genética , Centros de Atención Terciaria , Infecciones Urinarias/tratamiento farmacológico , Infecciones Urinarias/epidemiología , Virulencia
12.
Sci Rep ; 10(1): 22402, 2020 12 28.
Artículo en Inglés | MEDLINE | ID: mdl-33372194

RESUMEN

Nowadays there is an ongoing acute respiratory outbreak caused by the novel highly contagious coronavirus (COVID-19). The diagnostic protocol is based on quantitative reverse-transcription polymerase chain reaction (RT-PCR) and chests CT scan, with uncertain accuracy. This meta-analysis study determines the diagnostic value of an initial chest CT scan in patients with COVID-19 infection in comparison with RT-PCR. Three main databases; PubMed (MEDLINE), Scopus, and EMBASE were systematically searched for all published literature from January 1st, 2019, to the 21st May 2020 with the keywords "COVID19 virus", "2019 novel coronavirus", "Wuhan coronavirus", "2019-nCoV", "X-Ray Computed Tomography", "Polymerase Chain Reaction", "Reverse Transcriptase PCR", and "PCR Reverse Transcriptase". All relevant case-series, cross-sectional, and cohort studies were selected. Data extraction and analysis were performed using STATA v.14.0SE (College Station, TX, USA) and RevMan 5. Among 1022 articles, 60 studies were eligible for totalizing 5744 patients. The overall sensitivity, specificity, positive predictive value, and negative predictive value of chest CT scan compared to RT-PCR were 87% (95% CI 85-90%), 46% (95% CI 29-63%), 69% (95% CI 56-72%), and 89% (95% CI 82-96%), respectively. It is important to rely on the repeated RT-PCR three times to give 99% accuracy, especially in negative samples. Regarding the overall diagnostic sensitivity of 87% for chest CT, the RT-PCR testing is essential and should be repeated to escape misdiagnosis.


Asunto(s)
Prueba de COVID-19/métodos , COVID-19/diagnóstico , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa/métodos , Tomografía Computarizada por Rayos X/métodos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , COVID-19/diagnóstico por imagen , Niño , Preescolar , Femenino , Humanos , Lactante , Pulmón/diagnóstico por imagen , Masculino , Persona de Mediana Edad , SARS-CoV-2 , Sensibilidad y Especificidad , Tórax/diagnóstico por imagen , Adulto Joven
13.
AIMS Public Health ; 7(1): 66-80, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32258190

RESUMEN

Social support has an important impact on the well-being of the elderly. Some studies have shown that perceived social support is more important than received social support. Perceived social support has different definitions across different age groups and cultures. So, this sequential exploratory mixed-method study was designed to develop and validate a perceived social support scale for community-dwelling elderly. In the qualitative phase, the perspectives of the elderly on perceived social support were defined through directed content analysis. Then, an extensive item pool was designed based on the elderly's perception and review of the literature. In the quantitative phase, the validity (content, face, and construct) and reliability (internal consistency, stability) of the newly developed scale was assessed using the sampling of five hundred elderly. The final scale consists of 34 items with domains of "emotional support", "practical support", "spiritual support", "negative interactions" and "satisfaction with support received" that explained 58% of the total variance of the scale. The internal consistency varied from Cronbach's α = 0.70 to 0.87 for the subscales and as 0.92 for the whole scale. The study showed that the scale as a valid and reliable instrument can be used for the proper measurement of perceived social support among the elderly.

14.
Arch Virol ; 157(10): 1959-65, 2012 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-22695769

RESUMEN

Injecting drug users (IDUs) are the main at-risk population for hepatitis C virus (HCV) transmission. We studied HCV infection, risk factors, and genotype distribution in relation to the year of first injection among Iranian IDUs. Of a total of 126 specimens positive for HCV antibody, 93 (74 %) had detectible HCV RNA, and the NS5B gene was sequenced for 83, with genotype 3a (n = 48, 58 %) being predominant, followed by 1a (n = 35, 42 %). Tattooing was an independent predictor for HCV infection. No significant difference was found between HCV genotypes and IDU characteristics. Although there was no change in the distribution of prevalent genotypes before and after 1997, a slight variation in the prevalence was observed (p = 0.71). The difference in the prevalence of subtypes 1a and 3a (9.1 % in the period 1984-1996 and 18.2 % in the period 1997-2009) during 25 years was 9.1 %. These findings indicate a high prevalence of HCV infection among Iranian IDUs and highlights HCV-3a as the most prevalent subtype for the past 25 years. Harm-reduction strategies appear to be the most important measures to reduce the transmission of HCV in Iran.


Asunto(s)
Hepacivirus/genética , Hepatitis C/epidemiología , Hepatitis C/virología , Epidemiología Molecular , Abuso de Sustancias por Vía Intravenosa/complicaciones , Adulto , Anciano , Femenino , Genotipo , Hepacivirus/clasificación , Humanos , Irán/epidemiología , Masculino , Persona de Mediana Edad , Datos de Secuencia Molecular , Filogenia , Prevalencia , ARN Viral/genética , Análisis de Secuencia de ADN , Abuso de Sustancias por Vía Intravenosa/epidemiología , Factores de Tiempo , Adulto Joven
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