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Odimba U, Senthilselvan A, Farrell J, Gao Z. Identification of Sex-Specific Genetic Polymorphisms Associated with Asthma in Middle-Aged and Older Canadian Adults: An Analysis of CLSA Data. J Asthma Allergy 2023; 16:553-566. [PMID: 37197194 PMCID: PMC10184860 DOI: 10.2147/jaa.s404670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/29/2023] [Indexed: 05/19/2023] Open
Abstract
Purpose Asthma is a chronic heterogeneous respiratory disease resulting from a complex interplay between genetic variations and environmental exposures. There are sex disparities in the prevalence and severity of asthma in males and females. Asthma prevalence is higher in males during childhood but increases in females in adulthood. The mechanisms underlying these sex differences are not well understood; nevertheless, genetic variations, hormonal changes, and environmental influences are thought to play important roles. This study aimed to identify sex-specific genetic variants associated with asthma using CLSA genomic and questionnaire data. Methods First, we conducted a genome-wide SNP-by-sex interaction analysis on 23,323 individuals, examining 416,562 single nucleotide polymorphisms (SNPs) after quality control, followed by sex-stratified survey logistic regression of SNPs with interaction p-value less than 10¯5. Results Out of the 49 SNPs with interaction p-value less than 10-5, a sex-stratified survey logistic regression showed that five male-specific SNPs (rs6701638, rs17071077, rs254804, rs6013213, and rs2968822) in/near KIF26B, NMBR, PEPD, RTN4, and NFATC2 loci, and three female-specific SNPs (rs2968801, rs2864052, and rs9525931) in/near RTN4, and SERP2 loci were significantly associated with asthma after Bonferroni correction. An SNP (rs36213) in the EPHB1 gene was significantly associated with an increased risk of asthma in males [OR=1.35, 95% CI (1.14, 1.60)] but with a reduced risk of asthma in females [OR=0.84, 95% CI (0.76, 0.92)] after Bonferroni correction. Conclusion We discovered novel sex-specific genetic markers in/near the KIF26B, RTN4, EPHB1, NMBR, SERP2, PEPD, and NFATC2 genes that could potentially shed light on the sex differences in asthma susceptibility in males and females. Future mechanistic studies are required to understand better the underlying sex-related pathways of the identified loci in asthma development.
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Affiliation(s)
- Ugochukwu Odimba
- Clinical Epidemiology Unit, Division of Community Health and Humanities, Faculty of Medicine, Memorial University, St. John’s, Newfoundland and Labrador, Canada
| | | | - Jamie Farrell
- Clinical Epidemiology Unit, Division of Community Health and Humanities, Faculty of Medicine, Memorial University, St. John’s, Newfoundland and Labrador, Canada
- Faculty of Medicine, Health Science Centre (Respirology Department), Memorial University, St John’s, Newfoundland and Labrador, Canada
| | - Zhiwei Gao
- Clinical Epidemiology Unit, Division of Community Health and Humanities, Faculty of Medicine, Memorial University, St. John’s, Newfoundland and Labrador, Canada
- Correspondence: Zhiwei Gao, Clinical Epidemiology Unit, Division of Community Health and Humanities, Faculty of Medicine, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, A1B 3V6, Canada, Tel +17098646523, Email
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Stabil Kronik Obtrüktif Akciğer Hastalığı Hastalarında Serum Prolidaz ve Karbonik Anhidraz III Düzeylerinin Klinik Önemi. JOURNAL OF CONTEMPORARY MEDICINE 2022. [DOI: 10.16899/jcm.1107527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
GİRİŞ: Kronik obstrüktif akciğer hastalığı (KOAH), geri dönüşümsüz hava yolu akış kısıtlaması ve kronik hava yolu iltihabı ile karakterize bir hastalıktır. Kollajen yıkımının bir göstergesi olan serum prolidaz enzimi ile asit-baz regülasyonunda önemli işlevi olan karbonik anhidraz (CA) III enziminin KOAH'lı hastalarda klinik önemini araştırmayı amaçladık.
GEREÇ VE YÖNTEM: Bu çalışmaya 56 stabil KOAH'lı hasta ile sigara öyküsü ve ek hastalığı olmayan 32 sağlıklı olgu dahil edildi. Her iki grup arasında serum CA III ve prolidaz enzim düzeyleri karşılaştırıldı.
BULGULAR: Prolidaz enzim düzeyleri açısından iki grup arasında istatistiksel fark bulunmadı (p=0.831). KOAH grubunda CA III düzeylerinde istatistiksel olarak anlamlı bir artış vardı (p=0.001). KOAH hastalarında CA III enzimi düzeyi ile kanda kısmi karbondioksit basıcı (pCO2) arasında orta derecede pozitif, kanda kısmi oksijen basıncı (pO2) arasında ise negatif korelasyon vardı (r:0.302, p<0.025; r:-0.314, p:0.02).
SONUÇLAR: CA III ile KOAH arasında önemli bir klinik ilişki olduğunu ve bu nedenle CA III'ün KOAH takibinde aday bir biyobelirteç olabileceğini düşünüyoruz.
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Uysal P, Teksoz D, Aksan H, Durmus S, Uslu-Besli L, Cuhadaroglu C, Gelisgen R, Simsek G, Uzun H. Relationship between serum sialic acid levels and prolidase activity with airflow obstruction in patients with COPD. Medicine (Baltimore) 2022; 101:e28949. [PMID: 35356903 PMCID: PMC10684178 DOI: 10.1097/md.0000000000028949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 02/09/2022] [Indexed: 11/26/2022] Open
Abstract
ABSTRACT Our aim in this study was to evaluate the prognostic significance of sialic acid (SA) and prolidase activity and to evaluate the association between airflow obstruction severity and these parameters in chronic obstructive pulmonary disease (COPD) patients.Ninety-four patients (84 M, 10 F) and 34 healthy subjects (19 M, 15 F) were included into the study. COPD staging was performed to COPD patients according to new global initiative for chronic obstructive lung disease criteria which includes pulmonary function tests, symptoms and hospitalization; COPD patients were divided into 4 subgroups as group A (n = 25), group B (n = 19), group C (n = 20), and group D (n = 28).SA and C-reactive protein levels were significantly higher than the control group in all COPD groups. SA levels were significantly higher in group B patients than the control and group A. Prolidase activity was significantly lower than control group in total COPD groups (P < .05). There was a weak negative correlation between SA and forced vital capacity (r = -0.217, P = .038) and forced expiratory volume in 1 second (FEV1) (r = -0.210, P = .045), whereas weak positive correlation was present between SA and Creactive protein (r = 0.247, P = .018) in all patient groups. There was weak positive correlation between prolidase and FEV1 (r = 0.222, P = .033) and FEV1/forced vital capacity (r = 0.230, P = .027).Our study shows that systemic inflammation, prolidase activity, and SA levels in stable COPD patients are associated with airflow obstruction severity. In addition to the prolidase activity; SA levels might be associated with inflammation.
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Affiliation(s)
- Pelin Uysal
- Department of Chest Diseases, Acıbadem Mehmet Ali Aydınlar University Faculty of Medicine, Maslak Hospital, Istanbul, Turkey,Department of Biochemistry, Sisli Hamidiye Etfal Education and Research Hospital, Istanbul, Turkey,Department of Biochemistry, Faculty of Medicine, Halic University, Istanbul, Turkey,Department of Biochemistry, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey,Department of Nuclear Medicine, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey,Department of Physiology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey,Department of Medical Biochemistry, Faculty of Medicine, Istanbul Atlas University, Istanbul, Turkey
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Evaluation of Thiol/Disulfide Homeostasis in Bronchiectasis. Can Respir J 2022; 2022:8340450. [PMID: 35132344 PMCID: PMC8817889 DOI: 10.1155/2022/8340450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 12/14/2021] [Accepted: 01/13/2022] [Indexed: 11/25/2022] Open
Abstract
Purpose Thiols are sulfhydryl-containing organic compounds that have an important role in preventing cellular oxidative stress. This study compares the blood oxidative stress marker levels in bronchiectasis cases during their stable periods with healthy controls. Materials and Methods Seventy-seven patients (49 patients with stable bronchiectasis/28 healthy controls), followed up by the chest disease clinic, were included in the study. Peripheral blood thiol-disulfide parameters (NT: native thiol (−SH); TT: total thiol (−SH + SS); SS: disulfide (−SS); SS-SH: disulfide/native thiol index; SS-TT: disulphide/total thiol index; SH-TT: native thiol/total thiol index), and ischemia-modified albumin (IMA) levels were examined in the stable bronchiectasis group and the control group. Thiol-disulfide homeostasis was evaluated using a novel and automated assay. Findings and Result. Blood native thiol levels in patients with stable bronchiectasis were found to be significantly higher compared with healthy controls. A positive correlation between the total airway disease score and IMA levels was present. Our findings revealed that native thiol levels, which constitute a part of the antioxidant defense system, are increased in patients with stable bronchiectasis.
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Eni-Aganga I, Lanaghan ZM, Balasubramaniam M, Dash C, Pandhare J. PROLIDASE: A Review from Discovery to its Role in Health and Disease. Front Mol Biosci 2021; 8:723003. [PMID: 34532344 PMCID: PMC8438212 DOI: 10.3389/fmolb.2021.723003] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 08/18/2021] [Indexed: 01/14/2023] Open
Abstract
Prolidase (peptidase D), encoded by the PEPD gene, is a ubiquitously expressed cytosolic metalloproteinase, the only enzyme capable of cleaving imidodipeptides containing C-terminal proline or hydroxyproline. Prolidase catalyzes the rate-limiting step during collagen recycling and is essential in protein metabolism, collagen turnover, and matrix remodeling. Prolidase, therefore plays a crucial role in several physiological processes such as wound healing, inflammation, angiogenesis, cell proliferation, and carcinogenesis. Accordingly, mutations leading to loss of prolidase catalytic activity result in prolidase deficiency a rare autosomal recessive metabolic disorder characterized by defective wound healing. In addition, alterations in prolidase enzyme activity have been documented in numerous pathological conditions, making prolidase a useful biochemical marker to measure disease severity. Furthermore, recent studies underscore the importance of a non-enzymatic role of prolidase in cell regulation and infectious disease. This review aims to provide comprehensive information on prolidase, from its discovery to its role in health and disease, while addressing the current knowledge gaps.
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Affiliation(s)
- Ireti Eni-Aganga
- Center for AIDS Health Disparities Research, Nashville, TN, United States
- School of Graduate Studies and Research, Nashville, TN, United States
- Department of Microbiology, Immunology and Physiology, Nashville, TN, United States
| | - Zeljka Miletic Lanaghan
- Center for AIDS Health Disparities Research, Nashville, TN, United States
- Pharmacology Graduate Program, Vanderbilt University, Nashville, TN, United States
| | - Muthukumar Balasubramaniam
- Center for AIDS Health Disparities Research, Nashville, TN, United States
- Department of Biochemistry, Cancer Biology, Pharmacology and Neuroscience, Meharry Medical College, Nashville, TN, United States
| | - Chandravanu Dash
- Center for AIDS Health Disparities Research, Nashville, TN, United States
- School of Graduate Studies and Research, Nashville, TN, United States
- Department of Biochemistry, Cancer Biology, Pharmacology and Neuroscience, Meharry Medical College, Nashville, TN, United States
| | - Jui Pandhare
- Center for AIDS Health Disparities Research, Nashville, TN, United States
- School of Graduate Studies and Research, Nashville, TN, United States
- Department of Microbiology, Immunology and Physiology, Nashville, TN, United States
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Alghadir AH, Gabr SA, Al-Ghadir M. Oxidative Stress and Musculoskeletal Pain in University Students with Generalized Joint Hypermobility: A Case-Control Study. J Pain Res 2021; 14:2029-2037. [PMID: 34262337 PMCID: PMC8274523 DOI: 10.2147/jpr.s310022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 06/20/2021] [Indexed: 01/25/2023] Open
Abstract
Objective The current case–control study aimed to evaluate generalized joint hypermobility (GJH) and its association with pain intensity, cellular oxidative stress, and collagen-associated disorders in university students aged 18–25 years old. Background Joint hypermobility has been recognized in healthy subjects and people who are carriers of cellular disorders in connective tissues. Cellular tissue oxidative stress and collagen-associated disorders were shown to be associated with joint hypermobility (JH). Materials and Methods A total of 300 university students aged 18–25 years were randomly invited from different medical and science faculties in Mansoura university, Mansoura, Egypt to participate in this case–control study. Only 280 university students who had no exclusion criteria like chronic health problems, physical disability, musculoskeletal disorders, and body mass index (BMI) of ≥25 underwent an initial clinical interview and Beighton scoring as measures of GJH. Pain intensity, physical activity, oxidative stress parameters; TAC, TOC, OSI, and collagen-associated parameters; cellular prolidase activity and hydroxyproline were evaluated by using a prevalidated questionnaire, colorimetric, and immunoassay techniques. Results GJH was significantly reported in 57.1% of the study population, and most of them are females. Compared to men, females with GJH showed poor physical activity, lower TAC, and significantly higher levels of TOC, OSI, cellular prolidase activity, and hydroxyproline. Based on our findings, a high Beighton score is closely related to the tissue levels of prolidase, hydroxyproline, antioxidant activity, pain intensity, and poor physical activity in the female with GJH compared to men. Conclusion GJH was significantly reported in 57.1% of the study population, and most of them are females. The incidence of GJH showed to be associated with poor physical activity, abnormal cellular oxidative stress, and collagen abnormalities measured by significant increase in change in cellular prolidase activity and hydroxyproline.
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Affiliation(s)
- Ahmad H Alghadir
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Sami A Gabr
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia.,Department of Anatomy, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Muaz Al-Ghadir
- Department of Orthopedics, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia
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Objective and Measurable Biomarkers in Chronic Subjective Tinnitus. Int J Mol Sci 2021; 22:ijms22126619. [PMID: 34205595 PMCID: PMC8235100 DOI: 10.3390/ijms22126619] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 12/18/2022] Open
Abstract
Tinnitus is associated with increased social costs and reduced quality of life through sleep disorders or psychological distress. The pathophysiology of chronic subjective tinnitus, which accounts for most tinnitus, has not been clearly elucidated. This is because chronic subjective tinnitus is difficult to evaluate objectively, and there are no objective markers that represent the diagnosis or therapeutic effect of tinnitus. Based on the results of studies on patients with chronic subjective tinnitus, objective and measurable biomarkers that help to identify the pathophysiology of tinnitus have been summarized. A total of 271 studies in PubMed, 303 in EMBASE, and 45 in Cochrane Library were found on biomarkers related to chronic subjective tinnitus published until April 2021. Duplicate articles, articles not written in English, review articles, case reports, and articles that did not match our topic were excluded. A total of 49 studies were included. Three specimens, including blood, saliva, and urine, and a total of 58 biomarkers were used as indicators for diagnosis, evaluation, prognosis, and therapeutic effectiveness of tinnitus. Biomarkers were classified into eight categories comprising metabolic, hemostatic, inflammatory, endocrine, immunological, neurologic, and oxidative parameters. Biomarkers can help in the diagnosis, measure the severity, predict prognosis, and treatment outcome of tinnitus.
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ERMAYA M, DEMİR H, DEMİR C, KANMAZ H. INVESTİGATION OF AVERAGE VALUES OF PROLIDASE, ADENOZIN DEAMINASE, GLUTATHIONE S-TRANSFERASE AND GLUTATHIONE REDUCTASE ENZYMES IN PANCREAS CANCERS. CLINICAL AND EXPERIMENTAL HEALTH SCIENCES 2021. [DOI: 10.33808/clinexphealthsci.861254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Application of Metabolomics in Pediatric Asthma: Prediction, Diagnosis and Personalized Treatment. Metabolites 2021; 11:metabo11040251. [PMID: 33919626 PMCID: PMC8072856 DOI: 10.3390/metabo11040251] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/07/2021] [Accepted: 04/15/2021] [Indexed: 12/16/2022] Open
Abstract
Asthma in children remains a significant public health challenge affecting 5–20% of children in Europe and is associated with increased morbidity and societal healthcare costs. The high variation in asthma incidence among countries may be attributed to differences in genetic susceptibility and environmental factors. This respiratory disorder is described as a heterogeneous syndrome of multiple clinical manifestations (phenotypes) with varying degrees of severity and airway hyper-responsiveness, which is based on patient symptoms, lung function and response to pharmacotherapy. However, an accurate diagnosis is often difficult due to diversities in clinical presentation. Therefore, identifying early diagnostic biomarkers and improving the monitoring of airway dysfunction and inflammatory through non-invasive methods are key goals in successful pediatric asthma management. Given that asthma is caused by the interaction between genes and environmental factors, an emerging approach, metabolomics—the systematic analysis of small molecules—can provide more insight into asthma pathophysiological mechanisms, enable the identification of early biomarkers and targeted personalized therapies, thus reducing disease burden and societal cost. The purpose of this review is to present evidence on the utility of metabolomics in pediatric asthma through the analysis of intermediate metabolites of biochemical pathways that involve carbohydrates, amino acids, lipids, organic acids and nucleotides and discuss their potential application in clinical practice. Also, current challenges on the integration of metabolomics in pediatric asthma management and needed next steps are critically discussed.
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Eser B, Dogan I, Komut E, Koyuncu S, Aydemir N, Colak A, Akgun H, Kayadibi H. Relationship between renal tubulointerstitial fibrosis and serum prolidase enzyme activity. TURKISH JOURNAL OF BIOCHEMISTRY 2020. [DOI: 10.1515/tjb-2020-0026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
AbstractObjectivesThe severity of interstitial fibrosis/tubular atrophy (IFTA) is the most important determinant of the irreversible progression of chronic kidney disease (CKD). Prolidase is the key enzyme in collagen turnover and is associated with an extracellular matrix increase. We aimed to evaluate the relationship between the presence and degree of IFTA and serum prolidase enzyme activity (SPEA) in patients undergoing a renal biopsy.MethodsThis cross-sectional study included 56 patients who underwent a renal biopsy (30 males; mean age 45.3 ± 16.8 years) and also 54 healthy volunteers (21 males; mean age 42.7 ± 8.2 years). IFTA scoring was performed on the basis of percentage of IFTA presence in renal biopsy tissues (1=<10%; 2=10–24%; 3=25–50%; 4=>50%). SPEA was measured by spectrophotometric method.ResultsThe proteinuria and SPEA levels of the patients were significantly higher than the controls (p<0.001 and p<0.001, respectively). SPEA decreased significantly when the IFTA score increased (p<0.002). In the correlation analysis, the IFTA score was negatively correlated with SPEA (rs=−0.461, p<0.001), and positively correlated with proteinuria (rs=0.274, p=0.041).ConclusionThese findings suggest that increased collagen turnover decreases over time concerning the progression of renal fibrosis. Monitoring of SPEA level may useful as a biomarker for early determination of CKD progression and severity.
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Affiliation(s)
- Baris Eser
- Hitit University Faculty of Medicine, Department of Nephrology, Corum, Turkey
| | - Ibrahim Dogan
- Hitit University Faculty of Medicine, Department of Nephrology, Corum, Turkey
| | - Erdal Komut
- Hitit University Faculty of Medicine, Department of Radiology, Corum, Turkey
| | - Sumeyra Koyuncu
- Erciyes University Faculty of Medicine, Department of Nephrology, Kayseri, Turkey
| | - Nihal Aydemir
- Hitit University Faculty of Medicine, Department of Nephrology, Corum, Turkey
| | - Aysel Colak
- Ankara Bilkent City Hospital, Department of Pathology, Ankara, Turkey
| | - Hulya Akgun
- Erciyes University Faculty of Medicine, Department of Pathology, Kayseri, Turkey
| | - Huseyin Kayadibi
- Hitit University Faculty of Medicine, Department of Medical Biochemistry, Corum, Turkey
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GEDİK AH, ÇAKIR E, VEHAPOĞLU TÜRKMEN A, ÖZER ÖF, KAYGUSUZ SB. Total oxidant and antioxidant status and paraoxonase 1 levels of children with noncystic fibrosis bronchiectasis. Turk J Med Sci 2020; 50:1-7. [PMID: 31655531 PMCID: PMC7080354 DOI: 10.3906/sag-1503-99] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 02/14/2016] [Indexed: 01/03/2023] Open
Abstract
Background/aim To evaluate total oxidant status (TOS), total antioxidant capacity (TAC), and paraoxonase 1 (PON1) levels in children with noncystic fibrosis (CF) bronchiectasis (BE), and to compare these levels with those of healthy controls. The study parameters were also evaluated according to some demographic, anthropometric, and clinical characteristics, as well as lung functions. Materials and methods Enrolled in the study were 118 children with non-CF BE and 68 healthy controls. Serum TOS, TAC, and PON1 levels were determined. Lung function tests were performed by spirometry. Results Serum TOS was higher in the patients [median 9.54 (IQR 25–75 = 7.05–13.30) μmol H2O2 Eq/L] than in the healthy subjects [6.64 (5.45–9.53) μmol H2O2 Eq/L] (P < 0.001). TAC was higher in patients with non-CF BE [1.07 (1.0–1.07) mmol Trolox Eq/L] than in the healthy controls [0.87 (0.77–0.98) mmol Trolox Eq/L] (P < 0.001). In addition, serum PON1 levels were significantly higher in the patients [106.5 (42.5–154.2) U/L] than in the controls [47.7 (27.5–82.1) U/L] (P < 0.001). The patients with low FEV1 had decreased TAC when compared to those who had normal FEV1 in non-CF BE. Conclusion The present study demonstrated that compared with the control group the children with non-CF BE had elevated oxidative status, antioxidant defenses parameters, and PON1 values.
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Affiliation(s)
- Ahmet Hakan GEDİK
- Division of Pediatric Pulmonology, Faculty of Medicine, Bezmialem Vakıf University, İstanbulTurkey
| | - Erkan ÇAKIR
- Division of Pediatric Pulmonology, Faculty of Medicine, Bezmialem Vakıf University, İstanbulTurkey
| | | | - Ömer Faruk ÖZER
- Department of Biochemistry, Faculty of Medicine, Bezmialem Vakıf University, İstanbulTurkey
| | - Sare Betül KAYGUSUZ
- Department of Pediatrics, Faculty of Medicine, Bezmialem Vakıf University, İstanbulTurkey
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Albayrak L, Sogut O, Çakmak S, Gökdemir MT, Kaya H. Plasma oxidative-stress parameters and prolidase activity in patients with various causes of abdominal pain. Am J Emerg Med 2020; 38:99-104. [DOI: 10.1016/j.ajem.2019.04.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 04/15/2019] [Accepted: 04/15/2019] [Indexed: 10/27/2022] Open
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Dizdar OS, Turunç Özdemir A, Başpınar O, Koçer D, Katırcılar Y, Çelik İ. Serum prolidase level in patients with brucellosis and its possible relationship with pathogenesis of the disease: a prospective observational study. Turk J Med Sci 2019; 49:1479-1483. [PMID: 31651117 PMCID: PMC7018350 DOI: 10.3906/sag-1902-122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 08/04/2019] [Indexed: 11/25/2022] Open
Abstract
Background/aim Changes in collagen metabolism and fibroblastic activity may play a role in the pathogenesis of brucellosis. The prolidase enzyme plays an important role in collagen synthesis. We aimed to investigate the association of prolidase levels with brucellosis. Materials and methods Serum prolidase levels in 20 patients newly diagnosed with brucellosis were compared with levels in 30 healthy control subjects. Patients with brucellosis were reassessed 3 months later for prolidase, other laboratory measurements, and response to treatment. Results The levels of serum prolidase were significantly higher in brucellosis patients compared with those of healthy controls. Prolidase, sedimentation, and C-reactive protein levels were significantly lower after antibrucellosis treatment than before treatment. Conclusion The current study is the first to demonstrate significantly increased serum prolidase levels in patients with brucellosis compared with healthy controls. Prolidase levels also significantly decreased with antibrucellosis treatment. This finding provides a new experimental basis to understand the pathogenesis of brucellosis in relation to collagen metabolism. The increase in serum prolidase levels might be related to several factors such as tissue destruction, increased fibroblastic activity, and granuloma formation, all of which are involved in the natural history of brucellosis.
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Affiliation(s)
- Oğuzhan Sıtkı Dizdar
- Department of Internal Medicine and Clinical Nutrition, Kayseri City Training and Research Hospital, Kayseri, Turkey
| | - Ayşe Turunç Özdemir
- Department of Clinic Microbiology and Infectious Disease, Kayseri City Training and Research Hospital, Kayseri, Turkey
| | - Osman Başpınar
- Department of Internal Medicine, Kayseri City Training and Research Hospital, Kayseri, Turkey
| | - Derya Koçer
- Department of Biochemistry, Kayseri City Training and Research Hospital, Kayseri, Turkey
| | - Yavuz Katırcılar
- Department of Internal Medicine, Kayseri City Training and Research Hospital, Kayseri, Turkey
| | - İlhami Çelik
- Department of Clinic Microbiology and Infectious Disease, Kayseri City Training and Research Hospital, Kayseri, Turkey
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Ekinci A, Kamasak K. Evaluation of serum prolidase enzyme activity and oxidative stress in patients with tinnitus. Braz J Otorhinolaryngol 2019; 86:405-410. [PMID: 30975591 PMCID: PMC9422714 DOI: 10.1016/j.bjorl.2019.01.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/06/2019] [Indexed: 11/29/2022] Open
Abstract
Introduction Tinnitus is defined as the perception of sound in the head or in the head in the absence of external sounds. The cause of tinnitus is still unknown. Objective We aimed to compare the serum levels of total oxidant status, total antioxidant status, serum prolidase enzyme activity and the oxidative stress index in patients with tinnitus to those of normal subjects. Methods Twenty five patients with tinnitus (mean age 34.3) and 25 healthy controls (mean age 37.2) were included in the study. Results Total oxidant status levels in the patient group were significantly higher than in the control group (p = 0.037). The mean total oxidant status value was 2.54 ± 0.95 mmoL/L in the patient group, and 2.06 ± 0.98 mmoL/L in the control group. The mean oxidative stress index level was 0.22 ± 0.10 AU in the patient group, while it was 0.17 ± 0.08 AU in the control group. Oxidative stress index was significantly higher in the patient group (0.026). There was no significant difference between the groups in terms of total antioxidant status values (p = 0.838). The mean serum prolidase enzyme activity level was 202.74 ± 33.56 U/L in the patient group and 175.46 ± 42.68 U/L in the control group. Serum prolidase enzyme activity levels in the patient group were significantly higher than in the control group (0.040). Conclusion We detected that the total oxidant status, oxidative stress index and serum prolidase enzyme activity levels were higher in patients with tinnitus when compared to the healthy controls. This finding suggests that oxidative stress index and serum prolidase enzyme activity may play a role in the etiopathogenesis of tinnitus.
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Affiliation(s)
- Adnan Ekinci
- Hitit University, Faculty of Medicine, Otorhinolaryngology Department, Çorum, Turkey.
| | - Kaan Kamasak
- Hitit University, Faculty of Medicine, Neurosurgery Department, Çorum, Turkey
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Bhatnager R, Dang AS. Comprehensive in-silico prediction of damage associated SNPs in Human Prolidase gene. Sci Rep 2018; 8:9430. [PMID: 29930383 PMCID: PMC6013436 DOI: 10.1038/s41598-018-27789-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 06/04/2018] [Indexed: 12/05/2022] Open
Abstract
Prolidase is cytosolic manganese dependent exopeptidase responsible for the catabolism of imido di and tripeptides. Prolidase levels have been associated with a number of diseases such as bipolar disorder, erectile dysfunction and varied cancers. Single nucleotide polymorphism present in coding region of proteins (nsSNPs) has the potential to alter the primary structure as well as function of the protein. Hence, it becomes necessary to differentiate the potential harmful nsSNPs from the neutral ones. 19 nsSNPs were predicted as damaging by in-silico analysis of 298 nsSNPs retrieved from dbSNP database. Consurf analysis showed 18 out of 19 substitutions were present in the conserved regions. 4 substitutions (D276N, D287N, E412K, and G448R) that observed to have damaging effect are present in catalytic pocket. Four SNPs listed in splice site region were found to affect splicing of mRNA by altering acceptor site. On 3′UTR scan of 77 SNPs listed in SNP database, 9 SNPs were lead to alter miRNA target sites. These results provide a filtered data to explore the effect of uncharacterized nsSNP and SNP related to UTRs and splice site of prolidase to find their association with the disease susceptibility and to design the target dependent drugs for therapeutics.
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Affiliation(s)
- Richa Bhatnager
- Centre For Medical Biotechnology, M. D. University, Rohtak, 124001, India
| | - Amita S Dang
- Centre For Medical Biotechnology, M. D. University, Rohtak, 124001, India.
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Akar İ, İnce İ, Aslan C, Benli İ, Demir O, Altındeger N, Dogan A, Ceber M. Oxidative Stress And Prolidase Enzyme Activity In The Pathogenesis Of Primary Varicose Veins. Vascular 2017; 26:315-321. [PMID: 29216795 DOI: 10.1177/1708538117741764] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives Vascular endothelial dysfunction leads to the emerging of free oxygen radicals, deficiency of antioxidant system, forming of oxidative stress, inflammatory processes and release of proinflammatory cytokines. These things play big role in the development of primary varicose veins. Prolidase has been reported as an indicator of oxidative stress in diabetes, diabetic neuropathy, non-ulcerous dyspepsia, osteoporosis, polycystic over syndrome and many other diseases. The aim of this study is to evaluate the oxidative stress at venous insufficiency and to provide preliminary knowledge about the role of prolidase enzyme in varicose vein formation. Methods Ninety patients aged between 22 and 80 (47.35 ± 17.69) were included in the study and divided into 3 groups. Group1(n:30)(Serum control group): Patients without venous insufficiency. Group 2(n:30)(Tissue control group(healthy vein group): Patients underwent coronary artery bypass surgery (the remaining portion of great saphenous vein used as coronary artery bypass graft used as normal tissue) . Group 3(n:30)(Varicose vein group): Patients underwent varicose vein surgery (varicose vein and serum of these patients were used for study). Total Oxidant Status (TOS), Total Antioxidant Status (TAS), Oxidative Stress Index (OSI) and Prolidase enzyme levels were detected in tissue and serum samples. Results No significant changes were detected between three groups' serum samples in oxidative stress parameters and in the prolidase enzyme activity. The tissue TOS and OSI were higher in varicose vein group according to normal vein group and this was found statistically significant. And TAC levels in varicose vein group were significantly lower than normal vein group. Prolidase enzyme activity in varicose vein group was found higher according to normal vein group. Conclusion Oxidative stress plays a role at the development of primary varicose veins at biochemical level. Prolidase enzyme related with oxidative stress may play an important role in the pathogenesis of primary varicose veins.
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Affiliation(s)
- İlker Akar
- 1 Gaziosmanpasa University Faculty of Medicine, Deparment of Cardiovascular Surgery, Tokat, TURKEY
| | - İlker İnce
- 2 Diskapi Educational and Research Hospital, Cardiovascular Surgery Clinic, Ankara, TURKEY
| | - Cemal Aslan
- 3 State Hospital Cardiovascular Surgery Clinic, Tokat, TURKEY
| | - İsmail Benli
- 4 Gaziosmanpaşa University Faculty of Medicine, Department of Biochemistry, Tokat, TURKEY
| | - Osman Demir
- 5 Gaziosmanpaşa University Faculty of Medicine, Department of Biostatistics, Tokat, TURKEY
| | - Nuray Altındeger
- 1 Gaziosmanpasa University Faculty of Medicine, Deparment of Cardiovascular Surgery, Tokat, TURKEY
| | - Abdullah Dogan
- 6 Acıbadem Hospital, Deparment of Cardiovascular Surgery, Istanbul, TURKEY
| | - Mehmet Ceber
- 3 State Hospital Cardiovascular Surgery Clinic, Tokat, TURKEY
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Celik S, Kızıltan R, Yılmaz EM, Yılmaz Ö, Demir H. Potential diagnostic and prognostic significance of plasma prolidase activity in gastric cancer. Biomark Med 2017; 11:319-327. [DOI: 10.2217/bmm-2016-0367] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Aim: Plasma prolidase activities (PPAs) in cases of gastric cancer. Methodology/results: This study was based on a prospective design. 60 patients with gastric cancer (operable cases: 48; inoperable: 12) and 60 healthy controls were included in the study. Prolidase activity was analyzed. The mean PPA levels in the operable, inoperable and control groups were 45.60 ± 4.20, 54.35 ± 4. 9 and 10.92 ± 0.79 U/l, respectively (p < 0.001). PPA decreased significantly after tumor resection. PPA level was significant in differentiating operable cases from inoperable (sensitivity: 91.7%; specificity: 85.2%). Discussion/conclusion: PPA was significantly higher in patients with inoperable gastric cancer than in operable cases and the control group. A strong correlation was found between tumor volume and PPA.
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Affiliation(s)
- Sebahattin Celik
- Department of General Surgery, Faculty of Medicine, Yuzuncu Yıl University, Van, Turkey
| | - Remzi Kızıltan
- Department of General Surgery, Faculty of Medicine, Yuzuncu Yıl University, Van, Turkey
| | - Eyüp M Yılmaz
- Department of Surgery, Van Training & Education Hospital, Van, Turkey
| | - Özkan Yılmaz
- Department of General Surgery, Faculty of Medicine, Yuzuncu Yıl University, Van, Turkey
| | - Halit Demir
- Department of Chemistry, Faculty of Science & Art, Yuzuncu Yıl University, Van, Turkey
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Ekin S, Arısoy A, Gunbatar H, Sertogullarindan B, Sunnetcioglu A, Sezen H, Asker S, Yıldız H. The relationships among the levels of oxidative and antioxidative parameters, FEV1 and prolidase activity in COPD. Redox Rep 2017; 22:74-77. [PMID: 26870880 PMCID: PMC6837489 DOI: 10.1080/13510002.2016.1139293] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
INTRODUCTION Chronic obstructive pulmonary disease (COPD) is a progressive condition characterized by poorly reversible airflow limitations associated with an abnormal inflammatory response of the lung. METHODS We investigated whether prolidase levels in serum, total antioxidant status, total oxidative status (TOS), and the oxidative stress index (OSI) were associated with the etiopathogenesis of COPD, and whether there is a relationship between prolidase activity and oxidative parameters and carotid artery intima-media thickness (CIMT) in patients with COPD. This study included 91 patients with COPD and 15 control cases. Routine haematological and biochemical parameters were determined in all patients. All subjects were fully informed about the study and provided consent. RESULTS The mean age of the patients with COPD was 61.3 ± 10.5 years and that of the control group was 56.2 ± 12.1 years. The control group had a significantly higher plasma prolidase level than that in the COPD group. TOS and OSI levels in the control group were significantly lower than those in the COPD group. However, no significant differences were found in TALs or CIMT levels between the COPD and control groups. A negative correlation was detected between prolidase activity and age; however, no significant difference in age was observed between the two groups. CONCLUSION These results indicate that prolidase activity decreases in patients with COPD.
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Affiliation(s)
- Selami Ekin
- Yuzuncu Yıl University, Pulmonary Medicine, 65080 Van, Turkey
| | - Ahmet Arısoy
- Yuzuncu Yıl University, Pulmonary Medicine, 65080 Van, Turkey
| | - Hulya Gunbatar
- Yuzuncu Yıl University, Pulmonary Medicine, 65080 Van, Turkey
| | | | | | - Hatice Sezen
- Department of Biochemistry, Harran University, Turkey
| | - Selvi Asker
- Yuzuncu Yıl University, Pulmonary Medicine, 65080 Van, Turkey
| | - Hanifi Yıldız
- Private Lokman Hekim Hospital, Pulmonary Medicine, Turkey
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Ilic N, Mihailovic N. Serum Clara cell protein and atopic phenotype in children up to 2 years of age. J Clin Lab Anal 2017; 31. [PMID: 28146340 DOI: 10.1002/jcla.22151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Accepted: 12/26/2016] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Low value of serum Clara cell protein (CC16) is associated with bronchial hyperreactivity in children. OBJECTIVE To evaluate the serum CC16 in relation to atopy and previously manifested LRTD. METHODS In the population of 163 healthy 5- to 24-month-old children, atopy was determined by Phadiatop-infant (serum-specific IgE≥0.35 kUA/L), serum CC16 by ELISA, while data on previously manifested low respiratory tract diseases (LRTD) were collected from the Health Care Center database. RESULTS In atopic children, serum CC16 negatively correlated with age (r -.281, P=.041, n=53), while in nonatopic children, this correlation was positive (r .200, P=.036, n=110). Atopic ≥8-month-old children with previously manifested LRTD had lower level of CC16 (3.07 ng/mL) in relation to atopic children without LRTD at the same age (6.51 ng/mL), P=.029 (value of serum CC16≥4.8 ng/mL indicates atopic phenotype without LRTD 75% sensitivity, 87.5% specificity). In 8- to 24-month-old children with previously manifested pneumonia, serum CC16 was lower in atopic (2.9 ng/mL) in relation to nonatopic children (3.7 ng/mL), P=.029 (serum CC16 ≤3.4 ng/mL indicating atopy in the group of children with pneumonia, sensitivity 100%, and specificity 77%). Atopic 8- to 24-month-old children with previously manifested pneumonia had lower CC16 in relation to other atopic children in this age (P=.021) (for cutoff CC16≤3.4 ng/mL sensitivity 100%, specificity 77%), and also often chronic wheezing (atopic with pneumonia 83.3%, n=5/6 vs atopic without pneumonia 21.4%, n=3/14), P=.018. CONCLUSION Low serum CC16 is associated with previously expressed pneumonia and chronic wheezing in atopic children.
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Affiliation(s)
- Nevenka Ilic
- Department of Allergology and Immunology, Public Health Institute, Kragujevac, Serbia
| | - Natasa Mihailovic
- Department of Biostatistics, Public Health Institute, Kragujevac, Serbia
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Terzioglu D, Uslu L, Simsek G, Atukeren P, Erman H, Gelisgen R, Ayvaz S, Aksu B, Uzun H. The Effects of Hyperbaric Oxygen Treatment on Total Antioxidant Capacity and Prolidase Activity after Bile Duct Ligation in Rats. J INVEST SURG 2016; 30:376-382. [DOI: 10.1080/08941939.2016.1257666] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Duygu Terzioglu
- Department of Biochemistry, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Lebriz Uslu
- Department of Nuclear Medicine, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul Turkey
| | - Gonul Simsek
- Department of Physiology, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Pinar Atukeren
- Department of Biochemistry, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Hayriye Erman
- Department of Biochemistry, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Remise Gelisgen
- Department of Biochemistry, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Suleyman Ayvaz
- Department of Pediatric Surgery, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Burhan Aksu
- Department of Pediatric Surgery, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Hafize Uzun
- Department of Biochemistry, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul, Turkey
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Demir S, Bulut M, Atli A, Kaplan İ, Kaya MC, Bez Y, Özdemir PG, Sır A. Decreased Prolidase Activity in Patients with Posttraumatic Stress Disorder. Psychiatry Investig 2016; 13:420-6. [PMID: 27482243 PMCID: PMC4965652 DOI: 10.4306/pi.2016.13.4.420] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 09/06/2015] [Accepted: 09/17/2015] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Many neurochemical systems have been implicated in the development of Posttraumatic Stress Disorder (PTSD). The prolidase enzyme is a cytosolic exopeptidase that detaches proline or hydroxyproline from the carboxyl terminal position of dipeptides. Prolidase has important biological effects, and to date, its role in the etiology of PTSD has not been studied. In the present study, we aimed to evaluate prolidase activity in patients with PTSD. METHODS The study group consisted of patients who were diagnosed with PTSD after the earthquake that occurred in the province of Van in Turkey in 2011 (n=25); the first control group consisted of patients who experienced the earthquake but did not show PTSD symptoms (n=26) and the second control group consisted of patients who have never been exposed to a traumatic event (n=25). Prolidase activities in the patients and the control groups were determined by the ELISA method using commercial kits. RESULTS Prolidase activity in the patient group was significantly lower when compared to the control groups. Prolidase activity was also significantly lower in the traumatized healthy subjects compared to the other healthy group (p<0.01). CONCLUSION The findings of the present study suggest that the decrease in prolidase activity may have neuroprotective effects in patients with PTSD.
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Affiliation(s)
- Süleyman Demir
- Department of Psychiatry, Dicle University, Diyarbakir, Turkey
| | - Mahmut Bulut
- Department of Psychiatry, Dicle University, Diyarbakir, Turkey
| | - Abdullah Atli
- Department of Psychiatry, Dicle University, Diyarbakir, Turkey
| | - İbrahim Kaplan
- Department of Biochemistry, Dicle University, Diyarbakir, Turkey
| | | | - Yasin Bez
- Department of Psychiatry, Marmara University, Istanbul, Turkey
| | | | - Aytekin Sır
- Department of Psychiatry, Dicle University, Diyarbakir, Turkey
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Abstract
PURPOSE To determine and compare the serum and tear film prolidase activity (PA) between patients with keratoconus and healthy subjects. Also, we aimed to evaluate the serum oxidative stress level and the correlation with serum PA in patients with keratoconus. METHODS This prospective, comparative clinical study included 31 patients with keratoconus and 33 age-matched and sex-matched control subjects. All participants underwent a detailed ophthalmologic examination. Serum and tear samples were obtained from all participants. Tears and serum PA and serum oxidative stress markers were measured. RESULTS No significant differences in demographic characteristics were detected between groups (P > 0.05). The serum PA was significantly lower in the keratoconus group than in the control group (895.6 ± 198.7 vs. 1145.9 ± 285.4 U/L, P < 0.001). A tear film comparison showed that PA was lower in the keratoconus group than in the control group; however, this difference was not significant (3075.4 ± 672.2 vs. 3225.8 ± 903.2 U·L⁻¹·g⁻¹ protein, P = 0.45). Oxidative stress markers, such as total oxidant status and oxidative stress index, were found to be significantly higher in the keratoconus group (P < 0.001). CONCLUSIONS The serum PA was found to be lower in patients with keratoconus than in the controls. Additionally, serum oxidative stress markers were found to be higher than those of the controls. Thus, prolidase and systemic oxidative stress may have a role in the pathogenesis of keratoconus.
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Prolidase activity in chronic plaque psoriasis patients. Postepy Dermatol Alergol 2015; 32:82-7. [PMID: 26015776 PMCID: PMC4436238 DOI: 10.5114/pdia.2015.48049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 04/15/2014] [Accepted: 09/10/2014] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Psoriasis is a chronic, inflammatory, T-cell-mediated and hyperproliferative skin disease characterized by erythematous, squamous, sharply circumscribed and infiltrated plaques. The metabolisms of the collagen proteins undergo considerable changes due to the acceleration of their turnovers as a result of increased prolidase activity in psoriasis patients. AIM To determine the level of prolidase activity in psoriasis patients and evaluate its relationship with the oxidative system. MATERIAL AND METHODS The serum prolidase enzyme activity, total antioxidant levels and total oxidant levels of 40 psoriasis patients and a control group including 47 healthy individuals were analyzed by using their serum samples, and their oxidative stress indices were calculated. RESULTS The prolidase levels (p < 0.01), total oxidant levels (p < 0.01) and oxidative stress index levels (p < 0.001) of the patient group were higher than the corresponding parameters in the control group. The total antioxidant level was low (p < 0.01). Although a positive correlation was found between the prolidase and total antioxidant levels and the total oxidant level, no correlation was found between prolidase and the oxidative stress index. CONCLUSIONS It has been determined that the activity of the prolidase enzyme increases due to the increased collage turnover in psoriasis patients. Increased serum oxidant levels and oxidative stress indices values may play a role in the pathogenesis of psoriasis.
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Şen V, Uluca Ü, Ece A, Kaplan İ, Bozkurt F, Aktar F, Bağlı S, Tekin R. Serum prolidase activity and oxidant-antioxidant status in children with chronic hepatitis B virus infection. Ital J Pediatr 2014; 40:95. [PMID: 25425101 PMCID: PMC4247636 DOI: 10.1186/s13052-014-0095-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Accepted: 11/15/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Chronic hepatitis B (CHB) is a global health problem that can result in serious complications associated with collagen degradation. Prolidase is a specific imidodipeptidase that plays an important role in the breakdown of collagen. The aim of this study was to investigate prolidase activity and oxidant-antioxidant status in children with CHB. METHODS This prospective case control study includes 38 patients with CHB, 31 patients with inactive hepatitis B (IHB), and 29 healthy matched control subjects. Serum prolidase enzyme activity (SPEA), total antioxidant capacity (TAC), total oxidative activity (TOA), and malondialdehyde (MDA) level were measured and oxidative stress index (OSI) was calculated for each group. RESULTS Patients with CHB had significantly higher SPEA levels (207.82 ± 186.80 IU/L) than did the controls (58.6 ± 38.1 IU/L) and IHB patients (67.1 ± 39.9) (p < 0.001). CHB patients also had significantly higher TOA (45.0 ± 19.9 vs. 29.4 ± 11.7 (μmolH2O2 Eq./L), p = 0.005), OSI (33.1 ± 21.4 vs. 17.5 ± 10.2, p = 0.002) and MDA (13.4 ± 4.0 vs. 7.8 ± 2.6 μm/L, p < 0.001) values compared with the controls. TOA (32.0 ± 10.0) and OSI (15.4 ± 11.0) values of IHB patients were significantly lower than those of CHB patients (p < 0.05). SPEA had significant correlations with HBV- DNA and ALT values (r =0.514 and r =0.454, p < 0.001). CONCLUSION Our results suggest that prolidase activity can be considered as a reliable marker for CHB and increased oxidative stress appears to be related to chronicity of the disease.
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Affiliation(s)
- Velat Şen
- Department of Pediatrics, Dicle University Medical School, Diyarbakir, Turkey.
| | - Ünal Uluca
- Department of Pediatrics, Dicle University Medical School, Diyarbakir, Turkey.
| | - Aydın Ece
- Department of Pediatrics, Dicle University Medical School, Diyarbakir, Turkey.
| | - İbrahim Kaplan
- Department of Biochemistry, Dicle University Medical School, Diyarbakir, Turkey.
| | - Fatma Bozkurt
- Department of Infectious Diseases and Clinical Microbiology, Dicle University Medical School, Diyarbakir, Turkey.
| | - Fesih Aktar
- Department of Pediatrics, Dicle University Medical School, Diyarbakir, Turkey.
| | - Sedat Bağlı
- Department of Pediatrics, Dicle University Medical School, Diyarbakir, Turkey.
| | - Recep Tekin
- Department of Infectious Diseases and Clinical Microbiology, Dicle University Medical School, Diyarbakir, Turkey.
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Göknar N, Oktem F, Arı E, Demir AD, Torun E. Is oxidative stress related to childhood urolithiasis? Pediatr Nephrol 2014; 29:1381-6. [PMID: 24526098 DOI: 10.1007/s00467-014-2773-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 01/10/2014] [Accepted: 01/22/2014] [Indexed: 11/30/2022]
Abstract
BACKGROUND Urolithiasis is a common condition in pediatric populations in Turkey. The role of oxidative stress in renal stone formation in pediatric patients has not been reported to date. The aim of this study was to assess oxidative stress in childhood urolithiasis. METHODS Seventy-four children diagnosed with urolithiasis and 72 healthy control subjects were enrolled in the study. Kidney stone formers were evaluated by analysis of metabolic conditions related to urolithiasis, such as hypercalciuria, hyperoxaluria, hypocitraturia and hyperuricosuria. Urine total antioxidant status (TAS), and total oxidant status (TOS) were measured, and oxidative stress index (OSI) was calculated as an indicator of the degree of oxidative stress. RESULTS Among the stone formers, metabolic analyses revealed that 30 % had hypercalciuria, 45 % had hypocitraturia, 6 % had hyperoxaluria and 40 % had hyperuricosuria. Elevated levels of the renal tubular damage marker urinary N-acetyl- beta-D-glucosaminidase (NAG) was elevated in 25 % of the patient group, but microalbuminuria was not detected. Total oxidant status and total antioxidant status were significantly higher in stone formers than in the controls (p = 0.023 and 0.004, respectively). In addition, urinary NAG was significantly correlated with TOS (r = 0.427, p = 0.019). CONCLUSIONS The results of this study show that oxidative stress may play an important role in the pathogenesis of pediatric stone formers.
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Affiliation(s)
- Nilufer Göknar
- Department of Pediatric Nephrology, Bezmialem Vakif University Medical Faculty, Istanbul, Turkey
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Stanfliet JC, Locketz M, Berman P, Pillay TS. Evaluation of the utility of serum prolidase as a marker for liver fibrosis. J Clin Lab Anal 2014; 29:208-13. [PMID: 24798655 DOI: 10.1002/jcla.21752] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Revised: 02/28/2014] [Accepted: 03/03/2014] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Liver dysfunction is common and often unrecognized. Liver biopsy is the gold standard in the assessment of liver fibrosis, but has disadvantages. We assessed the diagnostic accuracy of serum prolidase enzyme activity (SPA) in predicting the presence and degree of liver fibrosis, as compared with liver biopsy. Further, we evaluated the effect of hemolysis on measured SPA levels. METHODS We undertook a prospective case control study. Thirty eight outpatients without apparent liver illness and 20 patients with liver pathology scheduled to undergo liver biopsy had their SPA levels measured. RESULTS Patients undergoing liver biopsy had higher SPA levels (361 (268) IU/l [median (interquartile range)]) compared with controls (169 (160) (P < 0.001)). A SPA cutoff value of 200 IU/l yielded a sensitivity of 89%, specificity of 59%, an odds ratio of 11.5, negative predictive value of 92%, and a positive predictive value of 50%. Hemolysis causes an apparent increase in SPA levels. CONCLUSION Higher SPA levels in patients undergoing liver biopsies compared with controls may reflect the presence of liver fibrosis. SPA levels could not be used to stage the degree of fibrosis. SPA measurement may be useful in the diagnostic workup of suspected liver disease.
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Affiliation(s)
- John C Stanfliet
- Division of Chemical Pathology, Department of Clinical Laboratory Sciences, University of Cape Town and National Health Laboratory Service, Cape Town, South Africa
| | - Michael Locketz
- Division of Anatomical Pathology, Department of Clinical Laboratory Sciences, University of Cape Town and National Health Laboratory Service, Cape Town, South Africa
| | - Peter Berman
- Division of Chemical Pathology, Department of Clinical Laboratory Sciences, University of Cape Town and National Health Laboratory Service, Cape Town, South Africa
| | - Tahir S Pillay
- Division of Chemical Pathology, Department of Clinical Laboratory Sciences, University of Cape Town and National Health Laboratory Service, Cape Town, South Africa.,Department of Chemical Pathology, Faculty of Health Sciences, University of Pretoria and National Health Laboratory Service, Tshwane Academic Division, Pretoria, South Africa
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Serum paraoxonase, arylesterase activity, and oxidative status in patients with nasal polyp. Eur Arch Otorhinolaryngol 2012; 270:1861-5. [DOI: 10.1007/s00405-012-2307-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 11/27/2012] [Indexed: 12/23/2022]
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Baysal E, Aksoy N, Kara F, Taysi S, Taşkın A, Bilinç H, Cevik C, Celenk F, Kanlıkama M. Oxidative stress in chronic otitis media. Eur Arch Otorhinolaryngol 2012; 270:1203-8. [PMID: 22711004 DOI: 10.1007/s00405-012-2070-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Accepted: 05/29/2012] [Indexed: 11/25/2022]
Abstract
Chronic otitis media usually presents with a benign tumor-like lesion of the temporal bone known as a cholesteatoma. The role of oxidative stress in the pathogenesis of chronic otitis media and cholesteatoma has not yet been fully explored. Therefore, the aim of this study was to investigate the oxidative stress markers and antioxidant enzymes in patients with cholesteatomatous and noncholesteatomatous chronic otitis media and in healthy subjects. A prospective controlled trial was performed on cholesteatomatous and noncholesteatomatous chronic otitis media patients in a tertiary referral center in a university hospital. A total of 75 subjects, including 25 cholesteatomatous and 25 noncholesteatomatous chronic otitis media patients and 25 healthy subjects participated in this study. Serum total oxidant status (TOS) and oxidative stress index (OSI) levels were significantly increased in the patient groups with or without cholesteatoma compared with the control group. Serum total antioxidant status (TAS) levels and Paraoxonase and arylesterase activity were significantly lower in the patient groups with or without cholesteatoma compared with the control group. Serum TOS and OSI levels were lower in the noncholesteatomatous group, whereas serum TAS levels were higher compared with the cholesteatomatous group. Serum arylesterase activity was significantly lower in the noncholesteatomatous group compared with the control group. The results of this study reveal that in cholesteatoma cases, the oxidative stress and antioxidant enzyme imbalance were more significant than in cases of chronic otitis media without cholesteatoma.
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Affiliation(s)
- Elif Baysal
- Department of Otolaryngology, Medical Faculty, Gaziantep University, Sahinbey, Gaziantep 27070, Turkey.
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Kitchener RL, Grunden AM. Prolidase function in proline metabolism and its medical and biotechnological applications. J Appl Microbiol 2012; 113:233-47. [PMID: 22512465 DOI: 10.1111/j.1365-2672.2012.05310.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Prolidase is a multifunctional enzyme that possesses the unique ability to degrade imidodipeptides in which a proline or hydroxyproline residue is located at the C-terminal end. Prolidases have been isolated from archaea and bacteria, where they are thought to participate in proline recycling. In mammalian species, prolidases are found in the cytoplasm and function primarily to liberate proline in the final stage of protein catabolism, particularly during the biosynthesis and degradation of collagen. Collagen comprises nearly one-third of the total protein in the body, and it is essential in maintaining tissue structure and integrity. Prolidase deficiency (PD), a rare autosomal recessive disorder in which mutations in the PEPD gene affect prolidase functionality, tends to have serious and sometimes life-threatening clinical symptoms. Recombinant prolidases have many applications and have been investigated not only as a possible treatment for PD, but also as a part of anti-cancer strategies, a component of biodecontamination cocktails and in the dairy industry. This review will serve to discuss the many in vivo functions of procaryotic and eucaryotic prolidases, as well as the most recent advances in therapeutic and biotechnological application of prolidases.
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Affiliation(s)
- R L Kitchener
- Department of Microbiology, North Carolina State University, Raleigh, NC, USA
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Bony E, Boudard F, Brat P, Dussossoy E, Portet K, Poucheret P, Giaimis J, Michel A. Awara (Astrocaryum vulgare M.) pulp oil: Chemical characterization, and anti-inflammatory properties in a mice model of endotoxic shock and a rat model of pulmonary inflammation. Fitoterapia 2012; 83:33-43. [DOI: 10.1016/j.fitote.2011.09.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 08/29/2011] [Accepted: 09/12/2011] [Indexed: 11/25/2022]
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Gumus S, Yaman H, Ozcan O, Deniz O, Karaman B, Cakir E, Tozkoparan E, Ozkan M, Bilgic H. Serum prolidase activity in patients with pulmonary tuberculosis. Scandinavian Journal of Clinical and Laboratory Investigation 2011; 71:467-72. [PMID: 21722016 DOI: 10.3109/00365513.2011.587021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AIM To investigate serum prolidase activity (SPA) in patients with pulmonary tuberculosis (PTB). MATERIAL AND METHODS Twenty-nine PTB patients and 32 controls were included in the study. PTB patients (cavitary and non-cavitary) and controls were compared in terms of mean SPA. Correlations were evaluated between SPA and acute phase reactants. RESULTS Mean SPA was significantly higher in PTB patients than in the control group. Mean SPA was significantly higher in patients with cavitary TB than non-cavitary TB. Mean SPA in patients with mild PTB was lower than patients with moderate and severe disease. We found significant correlations between SPA and CRP, ESR, albumin, platelet counts, HDL-cholesterol and LDH activity. CONCLUSION This study has shown that PTB patients have higher SPA than controls. The increase in SPA might be related to tissue destruction, increased immunoglobulin, complement levels and increased fibroblastic activity; all of which are involved in the natural history of PTB.
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Affiliation(s)
- Seyfettin Gumus
- Department of Pulmonary Medicine, Gulhane Military Medical Academy, Ankara, Turkey.
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Besio R, Monzani E, Gioia R, Nicolis S, Rossi A, Casella L, Forlino A. Improved prolidase activity assay allowed enzyme kinetic characterization and faster prolidase deficiency diagnosis. Clin Chim Acta 2011; 412:1814-20. [PMID: 21699887 DOI: 10.1016/j.cca.2011.06.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Revised: 06/06/2011] [Accepted: 06/08/2011] [Indexed: 11/18/2022]
Abstract
BACKGROUND Prolidase is a metallo-exopeptidase hydrolyzing X-Pro and X-Hyp dipeptides. Its absence or reduced level is typical in prolidase deficiency (PD) patients, and altered prolidase activity was reported in various diseases. Therefore, standardized and accurate measurement of prolidase activity is essential for PD diagnosis, as well as to elucidate the pathophysiology of other disorders. METHODS Human recombinant prolidase was used to optimize a spectrophotometric enzyme activity assay. Kinetic parameters and Mn(2+) affinity were evaluated. The method was validated on blood and fibroblasts from PD patients. RESULTS An activation step consisting in prolidase incubation with 1 mmol/l MnCl(2) and 0.75 mmol/l reduced glutathione at 50°C for 20 min was necessary to obtain the maximum activity and to accurately determine, for the recombinant enzyme, V(max) (489 U/mg), K(m) (5.4 mM) and Mn(2+) affinity (54 mM(-1)). The method applied to PD diagnosis revealed an intra-assay CV=8% for blood and 9% for fibroblasts lysates. The inter-assay CV was 21% for blood and 20% for cell lysates. CONCLUSION We optimized a faster spectrophotometric method to measure the activity when the enzyme is fully activated, this is crucial to allow a reliable evaluation of prolidase activity from different sources.
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Affiliation(s)
- Roberta Besio
- Department of Biochemistry, University of Pavia, Italy
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Gencer M, Aksoy N, Dagli EC, Uzer E, Aksoy S, Selek S, Celik H, Cakir H. Prolidase activity dysregulation and its correlation with oxidative-antioxidative status in chronic obstructive pulmonary disease. J Clin Lab Anal 2011; 25:8-13. [PMID: 21254236 DOI: 10.1002/jcla.20347] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is a consequence of an underlying chronic inflammatory disorder of the airways that is usually progressive and causes dysregulation in the metabolism of collagen. Prolidase has an important role in the recycling of proline for collagen synthesis and cell growth. OBJECTIVE We measured and compared prolidase activity in healthy individuals with COPD patients to find out that whether its activity might reflect disturbances of collagen metabolism in the patients. We also investigated oxidative-antioxidative status and its relationship with prolidase activity in this disease. METHODS Thirty voluntary patients with COPD and 30 healthy control subjects with similar age range and sex were included into the study. Plasma prolidase activities, total antioxidant capacity (TAC) and lipid peroxidation (LPO) levels were measured in the patient and control groups. RESULTS Plasma prolidase activity and TAC levels were significantly lower, and LPO levels were significantly higher in the patients than those in the control subjects (P<0.05, P<0.001, and P<0.001, respectively). Significant correlations were detected between plasma prolidase activity and TAC and LPO levels in the patients group (r=0.679, P<0.001; r=-426, P<0.05, respectively). CONCLUSIONS The results suggest that oxidative-antioxidative balance and collagen turnover are altered by the development of COPD in human lungs, and prolidase activity may reflect disturbances of collagen metabolism in this pulmonary disease. Monitoring of plasma prolidase activity and oxidative-antioxidative balance may be useful in evaluating fibrotic processes and oxidative damage in the chronic inflammatory lung disease in human.
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Affiliation(s)
- Mehmet Gencer
- Department of Chest Disease, Harran University, Sanliurfa, Turkey
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Mattarucchi E, Baraldi E, Guillou C. Metabolomics applied to urine samples in childhood asthma; differentiation between asthma phenotypes and identification of relevant metabolites. Biomed Chromatogr 2011; 26:89-94. [PMID: 21465502 DOI: 10.1002/bmc.1631] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 02/09/2011] [Accepted: 02/23/2011] [Indexed: 02/02/2023]
Abstract
Asthma is a heterogeneous disorder and one of the most common chronic childhood diseases. An improved characterization of asthma phenotypes would be invaluable for the understanding of the pathogenic mechanisms and the correct treatment of this disease. The aim of this pilot study was to explore the potential of metabolomics applied to urine samples in characterizing asthma, and to identify the most representative metabolites. Urine samples of 41 atopic asthmatic children (further subdivided in sub-groups according to the symptoms) and 12 age-matched controls were analyzed. Untargeted metabolic profiles were collected by LC-MS, and studied by multivariate analysis. The group of the asthmatics was differentiated by a model that proved to be uncorrelated with the chronic assumption of controller drugs on the part of the patients. The distinct sub-groups were also appropriately modeled. Further investigations revealed a reduced excretion of urocanic acid, methyl-imidazoleacetic acid and a metabolite resembling the structure of an Ile-Pro fragment in the asthmatics. The meaning of these findings was discussed and mainly correlated with the modulation of immunity in asthma. Metabolic profiles from urines have revealed the potential to characterize asthma and enabled the identification of metabolites that may have a role in the underlying inflammation.
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Affiliation(s)
- Elia Mattarucchi
- European Commission, Joint Research Centre, Institute for Health and Consumer Protection, Systems Toxicology Unit, Ispra, VA, Italy
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Lillvis JH, Kyo Y, Tromp G, Lenk GM, Li M, Lu Q, Igo RP, Sakalihasan N, Ferrell RE, Schworer CM, Gatalica Z, Land S, Kuivaniemi H. Analysis of positional candidate genes in the AAA1 susceptibility locus for abdominal aortic aneurysms on chromosome 19. BMC MEDICAL GENETICS 2011; 12:14. [PMID: 21247474 PMCID: PMC3037298 DOI: 10.1186/1471-2350-12-14] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Accepted: 01/19/2011] [Indexed: 11/10/2022]
Abstract
BACKGROUND Abdominal aortic aneurysm (AAA) is a complex disorder with multiple genetic risk factors. Using affected relative pair linkage analysis, we previously identified an AAA susceptibility locus on chromosome 19q13. This locus has been designated as the AAA1 susceptibility locus in the Online Mendelian Inheritance in Man (OMIM) database. METHODS Nine candidate genes were selected from the AAA1 locus based on their function, as well as mRNA expression levels in the aorta. A sample of 394 cases and 419 controls was genotyped for 41 SNPs located in or around the selected nine candidate genes using the Illumina GoldenGate platform. Single marker and haplotype analyses were performed. Three genes (CEBPG, PEPD and CD22) were selected for DNA sequencing based on the association study results, and exonic regions were analyzed. Immunohistochemical staining of aortic tissue sections from AAA and control individuals was carried out for the CD22 and PEPD proteins with specific antibodies. RESULTS Several SNPs were nominally associated with AAA (p < 0.05). The SNPs with most significant p-values were located near the CCAAT enhancer binding protein (CEBPG), peptidase D (PEPD), and CD22. Haplotype analysis found a nominally associated 5-SNP haplotype in the CEBPG/PEPD locus, as well as a nominally associated 2-SNP haplotype in the CD22 locus. DNA sequencing of the coding regions revealed no variation in CEBPG. Seven sequence variants were identified in PEPD, including three not present in the NCBI SNP (dbSNP) database. Sequencing of all 14 exons of CD22 identified 20 sequence variants, five of which were in the coding region and six were in the 3'-untranslated region. Five variants were not present in dbSNP. Immunohistochemical staining for CD22 revealed protein expression in lymphocytes present in the aneurysmal aortic wall only and no detectable expression in control aorta. PEPD protein was expressed in fibroblasts and myofibroblasts in the media-adventitia border in both aneurysmal and non-aneurysmal tissue samples. CONCLUSIONS Association testing of the functional positional candidate genes on the AAA1 locus on chromosome 19q13 demonstrated nominal association in three genes. PEPD and CD22 were considered the most promising candidate genes for altering AAA risk, based on gene function, association evidence, gene expression, and protein expression.
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Affiliation(s)
- John H Lillvis
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan, USA
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Horoz M, Aslan M, Bolukbas FF, Bolukbas C, Nazligul Y, Celik H, Aksoy N. Serum prolidase enzyme activity and its relation to histopathological findings in patients with non-alcoholic steatohepatitis. J Clin Lab Anal 2011; 24:207-11. [PMID: 20486204 DOI: 10.1002/jcla.20334] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The aim of this study was to investigate serum prolidase enzyme activity and to find out its association with liver biopsy specimens' histopathological findings in patients with nonalcoholic steatohepatitis (NASH), which may progress to liver fibrosis and cirrhosis. Thirty-six patients with biopsy-proven NASH and 29 healthy controls were enrolled. Serum prolidase enzyme activity was measured spectrophotometrically. Serum prolidase enzyme activity was significantly higher in patients with NASH than controls (P=0.016). A significant correlation was observed between serum prolidase enzyme activity and fibrosis score in patients with NASH (r=0.661, P<0.001). Serum prolidase activity seems to be correlated with the level of fibrosis. Monitoring serum prolidase activity may be a useful adjunctive tool in predicting liver fibrosis, especially in the absence of advanced fibrosis and other conditions, which may affect the interpretation of prolidase activity.
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Affiliation(s)
- Mehmet Horoz
- School of Medicine, Department of Internal Medicine, Harran University, Sanliurfa, Turkey
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Sezen Y, Bas M, Altiparmak H, Yildiz A, Buyukhatipoglu H, Faruk Dag O, Kaya Z, Aksoy N. Serum prolidase activity in idiopathic and ischemic cardiomyopathy patients. J Clin Lab Anal 2010; 24:213-8. [PMID: 20626024 DOI: 10.1002/jcla.20388] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Idiopathic and ischemic dilated cardiomyopathies (DCM) are the most common types of DCM, and both exhibit the same histopathological feature of fibrosis. Prolidase is an enzyme that serves a rate-limiting function in collagen turnover. Several studies have shown increased prolidase activity in fibrosis, though controversy persists. In this study, we measured prolidase enzyme activity in patients with idiopathic or ischemic DCM and in healthy controls, making this, to our knowledge, the first study to do so. What we found is that serumprolidase activity was significantly lower in both DCM groups relative to healthy volunteers and lower in ischemic DCM than idiopathic. These intriguing results could be attributed either to decreased collagen turnover in the heart tissues in which DCM develops, a result of diminished functional heart tissue, or to decreased physical activity levels among DCM patients stemming from their heart failure. Either way, further studies are needed to verify and clarify our results.
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Affiliation(s)
- Yusuf Sezen
- Department of Cardiology, Harran University School of Medicine, Sanliurfa, Turkey.
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Current world literature. Curr Opin Allergy Clin Immunol 2010; 10:87-92. [PMID: 20026987 DOI: 10.1097/aci.0b013e3283355458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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