1
|
Faustine I, Marteka D, Malik A, Supriyanto E, Syafhan NF. Genotype variation of ACE and ACE2 genes affects the severity of COVID-19 patients. BMC Res Notes 2023; 16:194. [PMID: 37667339 PMCID: PMC10478384 DOI: 10.1186/s13104-023-06483-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 08/29/2023] [Indexed: 09/06/2023] Open
Abstract
OBJECTIVE Genetic polymorphisms in ACE and ACE2 genes are involved in the RAS regulation of blood pressure and their activity may confer susceptibility to hypertension. In addition, they may play a role in SARS-CoV-2 pathogenesis and the severity of COVID-19. This study aims to determine the effect of genetic variations in the ACE (rs4331) and ACE2 (rs2074192) genes with hypertension comorbidity on the severity of COVID-19 in the Indonesian population. RESULT 186 patients were enrolled and assigned into the COVID-19 group (n = 95) and non-COVID-19 group (n = 91) in this cross-sectional study. GG genotype frequency was dominant in ACE gene, but there were no significant differences between the groups (p = 0.163). The two groups had a significant difference (p = 0.000) for the CC genotype frequency (0,37 vs. 0.01) in the ACE2 gene. The proportion of women with COVID-19 is higher (51%), but men with hypertension had more severe symptoms (44%). Men with hypertension comorbidity, GG (ACE), and TT (ACE2) genotypes tended to have moderate-to-severe symptoms (25%). Similarly, women with hypertension as well as GG and CT genotypes tended to have moderate-to-severe symptoms (21%). We conclude that hypertension and mutations in the ACE (rs4331) and ACE2 (rs2074192) genes affect the severity of COVID-19.
Collapse
Affiliation(s)
- Ingrid Faustine
- Faculty of Pharmacy, Universitas Indonesia, Depok, 16424, West Java, Indonesia
- Department of Pharmacy, Faculty of Mathematics and Natural Sciences, Tadulako University, Palu, 94148, Central Sulawesi, Indonesia
| | - Deli Marteka
- Faculty of Pharmacy, Universitas Indonesia, Depok, 16424, West Java, Indonesia
| | - Amarila Malik
- Division of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmacy, Universitas Indonesia, Depok, 16424, West Java, Indonesia.
| | - Eko Supriyanto
- Department of Biomedical Engineering & Health Science, Universiti Teknologi Malaysia, Johor Bahru, Johor, 81310, Malaysia
| | - Nadia F Syafhan
- Division of Clinical Pharmacy, Faculty of Pharmacy, Universitas Indonesia, Depok, 16424, West Java, Indonesia
- Universitas Indonesia Hospital, Jl. Prof. Dr. Bahder Djohan, Pondok Cina, Depok, 16424, West Java, Indonesia
| |
Collapse
|
2
|
Danilov SM, Kurilova OV, Sinitsyn VE, Kamalov AA, Garcia JGN, Dudek SM. Predictive potential of ACE phenotyping in extrapulmonary sarcoidosis. Respir Res 2022; 23:211. [PMID: 35996109 PMCID: PMC9396819 DOI: 10.1186/s12931-022-02145-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 08/15/2022] [Indexed: 01/08/2023] Open
Abstract
Elevated ACE expression in tissues (reflected by blood ACE levels) is associated with increased risk of cardiovascular diseases and is also a marker for granulomatous diseases. We developed a new approach for characterization of ACE status in the blood—ACE phenotyping and established normal values of ACE levels 50–150% of control pooled plasma. ACE phenotyping was performed in citrated plasma of 120 patients with known interstitial lung diseases. In the 1st set of 100 patients we found 22 patients with ACE levels > 150%; ACE phenotyping also objectively identified the presence of ACE inhibitors in the plasma of 15 patients. After excluding these patients and patient with ACE mutation that increases ACE shedding, 17 patients were identified as a suspicious for systemic sarcoidosis based on elevation of blood ACE (> 150% of mean). A new parameter that we have established–ACE immunoreactivity (with mAb 9B9)—allowed us to detect 22 patients with decreased values (< 80%) of this parameter, which may indicate the presence of ACE in the blood that originates from macrophages/dendritic cells of granulomas. In the remaining 20 patients, this new parameter (mAbs binding/activity ratio) was calculated using 3 mAbs (9B9, 3A5 and i1A8—having overlapping epitopes), and 8 patients were identified as having decreases in this parameter, thus increasing dramatically the sensitivity for detection of patients with systemic sarcoidosis. Whole body PET scan confirmed extrapulmonary granulomas in some patients with lower immunoreactivity towards anti-ACE mAbs. ACE phenotyping has novel potential to noninvasively detect patients with systemic sarcoidosis.
Collapse
Affiliation(s)
- Sergei M Danilov
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, CSB 915, MC 719, 840 S. Wood Ave., Chicago, IL, 60612, USA. .,Medical Center, Moscow University, Moscow, Russia. .,University of Arizona Health Sciences, Tucson, AZ, USA.
| | | | | | | | | | - Steven M Dudek
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, CSB 915, MC 719, 840 S. Wood Ave., Chicago, IL, 60612, USA
| |
Collapse
|
3
|
Alexander MJ, Sporn PHS. ACE high: when it's not a winner for diagnosis of sarcoidosis. Transl Res 2021; 230:1-4. [PMID: 33310137 DOI: 10.1016/j.trsl.2020.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 11/25/2022]
Affiliation(s)
- Michael J Alexander
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Peter H S Sporn
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois; Medical Service, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.
| |
Collapse
|
4
|
Novel ACE mutations mimicking sarcoidosis by increasing blood ACE levels. Transl Res 2021; 230:5-20. [PMID: 32726712 DOI: 10.1016/j.trsl.2020.07.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/20/2020] [Accepted: 07/23/2020] [Indexed: 11/22/2022]
Abstract
An elevated blood angiotensin I-converting enzyme (ACE) supports diagnosis of sarcoidosis and Gaucher disease. However, some ACE mutations increase ACE shedding, and patients with these mutations are therefore at risk of being incorrectly diagnosed with sarcoidosis because of elevated serum ACE levels. We applied a novel approach called "ACE phenotyping" to identify possible ACE mutations in 3 pulmonary clinic patients that had suspected sarcoidosis based on elevated blood ACE levels. Conformational fingerprinting of ACE indicated that these mutations may be localized in the stalk region of the protein and these were confirmed by whole exome sequencing. Index patient 1 (IP1) had a mutation (P1199L) that had been previously identified, while the other 2 patients had novel ACE mutations. IP2 had 2 mutations, T887M and N1196K (eliminating a putative glycosylation site), while IP3 had a stop codon mutation Q1124X (eliminating the transmembrane anchor). We also performed a comprehensive analysis of the existing database of all ACE mutations to estimate the proportion of mutations increasing ACE shedding. The frequency of ACE mutations resulting in increased blood ACE levels may be much higher than previously estimated. ACE phenotyping, together with whole exome sequencing, is a diagnostic approach that could prevent unnecessary invasive and/or costly diagnostic procedures, or potentially harmful treatment for patients misdiagnosed on the basis of elevated blood ACE levels.
Collapse
|
5
|
Lopez-Sublet M, Caratti di Lanzacco L, Danser AHJ, Lambert M, Elourimi G, Persu A. Focus on increased serum angiotensin-converting enzyme level: From granulomatous diseases to genetic mutations. Clin Biochem 2018; 59:1-8. [PMID: 29928904 DOI: 10.1016/j.clinbiochem.2018.06.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 05/29/2018] [Accepted: 06/15/2018] [Indexed: 12/19/2022]
Abstract
Angiotensin I-converting enzyme (ACE) is a well-known zinc-metallopeptidase that converts angiotensin I to the potent vasoconstrictor angiotensin II and degrades bradykinin, a powerful vasodilator, and as such plays a key role in the regulation of vascular tone and cardiac function. Increased circulating ACE (cACE) activity has been reported in multiple diseases, including but not limited to granulomatous disorders. Since 2001, genetic mutations leading to cACE elevation have also been described. This review takes advantage of the identification of a novel ACE mutation (25-IVS25 + 1G > A) in two Belgian pedigrees to summarize current knowledge about the differential diagnosis of cACE elevation, based on literature review and the experience of our centre. Furthermore, we propose a practical approach for the evaluation and management of patients with elevated cACE and discuss in which cases search for genetic mutations should be considered.
Collapse
Affiliation(s)
| | - Lorenzo Caratti di Lanzacco
- Division of Cardiology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
| | - A H Jan Danser
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Rotterdam, The Netherlands
| | - Michel Lambert
- Division of Internal Medicine, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Ghassan Elourimi
- Internal Medicine Department, University Hospital Avicenne, Bobigny, AP-HP, France
| | - Alexandre Persu
- Division of Cardiology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium; Pole of Cardiovascular Research, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
| |
Collapse
|
6
|
Efimov GA, Raats JMH, Chirivi RGS, van Rosmalen JWG, Nedospasov SA. Humanization of Murine Monoclonal anti-hTNF Antibody: The F10 Story. Mol Biol 2017. [DOI: 10.1134/s0026893317060061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
7
|
Danilov SM. Conformational Fingerprinting Using Monoclonal Antibodies (on the Example of Angiotensin I-Converting Enzyme-ACE). Mol Biol 2017; 51:906-920. [PMID: 32287393 PMCID: PMC7102274 DOI: 10.1134/s0026893317060048] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 06/02/2017] [Indexed: 11/22/2022]
Abstract
During the past 30 years my laboratory has generated 40+ monoclonal antibodies (mAbs) directed to structural and conformational epitopes on human ACE as well as ACE from rats, mice and other species. These mAbs were successfully used for detection and quantification of ACE by ELISA, Western blotting, flow cytometry and immunohistochemistry. In all these applications mainly single mAbs were used. We hypothesized that we can obtain a completely new kind of information about ACE structure and function if we use the whole set of mAbs directed to different epitopes on the ACE molecule. When we finished epitope mapping of all mAbs to ACE (and especially, those recognizing conformational epitopes), we realized that we had obtained a new tool to study ACE. First, we demonstrated that binding of some mAbs is very sensitive to local conformational changes on the ACE surface-due to local denaturation, inactivation, ACE inhibitor or mAbs binding or due to diseases. Second, we were able to detect, localize and characterize several human ACE mutations. And, finally, we established a new concept-conformational fingerprinting of ACE using mAbs that in turn allowed us to obtain evidence for tissue specificity of ACE, which has promising scientific and diagnostic perspectives. The initial goal for the generation of mAbs to ACE 30 years ago was obtaining mAbs to organ-specific endothelial cells, which could be used for organ-specific drug delivery. Our systematic work on characterization of mAbs to numerous epitopes on ACE during these years has lead not only to the generation of the most effective mAbs for specific drug/gene delivery into the lung capillaries, but also to the establishment of the concept of conformational fingerprinting of ACE, which in turn gives a theoretical base for the generation of mAbs, specific for ACE from different organs. We believe that this concept could be applicable for any glycoprotein against which there is a set of mAbs to different epitopes.
Collapse
Affiliation(s)
- S. M. Danilov
- University of Illinois at Chicago, Chicago, USA
- Arizona University, Tucson, USA
- Medical Scientific and Educational Center of Moscow State University, Moscow, 119991 Russia
| |
Collapse
|
8
|
Danilov SM, Tovsky SI, Schwartz DE, Dull RO. ACE Phenotyping as a Guide Toward Personalized Therapy With ACE Inhibitors. J Cardiovasc Pharmacol Ther 2017; 22:374-386. [DOI: 10.1177/1074248416686188] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background: Angiotensin-converting enzyme (ACE) inhibitors (ACEI) are widely used in the management of cardiovascular diseases but with significant interindividual variability in the patient’s response. Objectives: To investigate whether interindividual variability in the response to ACE inhibitors is explained by the “ACE phenotype”—for example, variability in plasma ACE concentration, activity, and conformation and/or the degree of ACE inhibition in each individual. Methods: The ACE phenotype was determined in plasma of 14 patients with hypertension treated chronically for 4 weeks with 40 mg enalapril (E) or 20 mg E + 16 mg candesartan (EC) and in 20 patients with hypertension treated acutely with a single dose (20 mg) of E with or without pretreatment with hydrochlorothiazide. The ACE phenotyping included (1) plasma ACE concentration; (2) ACE activity (with 2 substrates: Hip-His-Leu and Z-Phe-His-Leu and calculation of their ratio); (3) detection of ACE inhibitors in patient’s blood (indicator of patient compliance) and the degree of ACE inhibition (ie, adherence); and (4) ACE conformation. Results: Enalapril reduced systolic and diastolic blood pressure in most patients; however, 20% of patients were considered nonresponders. Chronic treatment results in 40% increase in serum ACE concentrations, with the exception of 1 patient. There was a trend toward better response to ACEI among patients who had a higher plasma ACE concentration. Conclusion: Due to the fact that “20% of patients do not respond to ACEI by blood pressure drop,” the initial blood ACE level could not be a predictor of blood pressure reduction in an individual patient. However, ACE phenotyping provides important information about conformational and kinetic changes in ACE of individual patients, and this could be a reason for resistance to ACE inhibitors in some nonresponders.
Collapse
Affiliation(s)
- Sergei M. Danilov
- Department of Anesthesiology, Anesthesiology Research Center, University of Illinois at Chicago, Chicago, IL, USA
| | - Stan I. Tovsky
- Department of Anesthesiology, Anesthesiology Research Center, University of Illinois at Chicago, Chicago, IL, USA
| | - David E. Schwartz
- Department of Anesthesiology, Anesthesiology Research Center, University of Illinois at Chicago, Chicago, IL, USA
| | - Randal O. Dull
- Department of Anesthesiology, Anesthesiology Research Center, University of Illinois at Chicago, Chicago, IL, USA
| |
Collapse
|
9
|
Correlation of angiotensin I-converting enzyme gene insertion/deletion polymorphism with rheumatic heart disease: a meta-analysis. Biosci Rep 2016; 36:BSR20160151. [PMID: 27758878 PMCID: PMC5293560 DOI: 10.1042/bsr20160151] [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] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 09/28/2016] [Accepted: 10/10/2016] [Indexed: 02/07/2023] Open
Abstract
Rheumatic heart disease (RHD) is a serious cardiovascular disorder worldwide. Several articles have reported the effect of angiotensin I-converting enzyme gene insertion/deletion (ACE I/D) polymorphism in RHD risk. However, the results still remain inconsistent. The objective of the present study was to assess more precise estimations of the relationship between ACE I/D variant and RHD susceptibility. Relevant case–control studies published between January 2000 and 2016 were searched in the electronic databases. The odds ratio (OR) with its 95% confidence interval (CI) was employed to calculate the strength of the effect. A total of nine articles were retrieved, including 1333 RHD patients and 1212 healthy controls. Overall, our result did not detect a significant association between ACE I/D polymorphism and RHD risk under each genetic model (P > 0.05). Subgroup analysis by ethnicity showed no positive relationship in Asians as well (P > 0.05). With respect to the severity of RHD, our result found that the frequency differences between mitral valve lesion (MVL), combined valve lesion (CVL) and healthy controls were not significantly different. Furthermore, no significant association was found between female, male RHD patients and the controls regarding to the ACE I/D polymorphism. In conclusion, our result indicated that ACE I/D polymorphism might not be a risk factor for RHD progression based on the existing research results. Additional well-designed studies with larger samples are still needed to confirm these findings.
Collapse
|
10
|
Danilov SM, Lünsdorf H, Akinbi HT, Nesterovitch AB, Epshtein Y, Letsiou E, Kryukova OV, Piegeler T, Golukhova EZ, Schwartz DE, Dull RO, Minshall RD, Kost OA, Garcia JGN. Lysozyme and bilirubin bind to ACE and regulate its conformation and shedding. Sci Rep 2016; 6:34913. [PMID: 27734897 PMCID: PMC5062130 DOI: 10.1038/srep34913] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 09/21/2016] [Indexed: 11/08/2022] Open
Abstract
Angiotensin I-converting enzyme (ACE) hydrolyzes numerous peptides and is a critical participant in blood pressure regulation and vascular remodeling. Elevated tissue ACE levels are associated with increased risk for cardiovascular and respiratory disorders. Blood ACE concentrations are determined by proteolytic cleavage of ACE from the endothelial cell surface, a process that remains incompletely understood. In this study, we identified a novel ACE gene mutation (Arg532Trp substitution in the N domain of somatic ACE) that increases blood ACE activity 7-fold and interrogated the mechanism by which this mutation significantly increases blood ACE levels. We hypothesized that this ACE mutation disrupts the binding site for blood components which may stabilize ACE conformation and diminish ACE shedding. We identified the ACE-binding protein in the blood as lysozyme and also a Low Molecular Weight (LMW) ACE effector, bilirubin, which act in concert to regulate ACE conformation and thereby influence ACE shedding. These results provide mechanistic insight into the elevated blood level of ACE observed in patients on ACE inhibitor therapy and elevated blood lysozyme and ACE levels in sarcoidosis patients.
Collapse
Affiliation(s)
- Sergei M. Danilov
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA
- Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Heinrich Lünsdorf
- Central Facility of Microscopy, Helmholtz-Center of Infection Research, Braunschweig, Germany
| | - Henry T. Akinbi
- Divisions of Pulmonary Biology and Neonatology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | | | - Yuliya Epshtein
- Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Eleftheria Letsiou
- Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Olga V. Kryukova
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Tobias Piegeler
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA
- Institute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland
| | | | - David E. Schwartz
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA
| | - Randal O. Dull
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA
| | - Richard D. Minshall
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, USA
| | - Olga A. Kost
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Joe G. N. Garcia
- Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, IL, USA
- University of Arizona Health Sciences, Tucson, AZ, USA
| |
Collapse
|
11
|
Renin-angiotensin system phenotyping as a guidance toward personalized medicine for ACE inhibitors: can the response to ACE inhibition be predicted on the basis of plasma renin or ACE? Cardiovasc Drugs Ther 2015; 28:335-45. [PMID: 24958603 DOI: 10.1007/s10557-014-6537-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE & METHODS Not all hypertensive patients respond well to ACE inhibition. Here we determined whether renin-angiotensin system (RAS) phenotyping, i.e., the measurement of renin or ACE, can predict the individual response to RAS blockade, either chronically (enalapril vs. enalapril + candesartan) or acutely (enalapril ± hydrochlorothiazide, HCT). RESULTS Chronic enalapril + candesartan induced larger renin rises, but did not lower blood pressure (BP) more than enalapril. Similar observations were made for enalapril + HCT vs. enalapril when given acutely. Baseline renin predicted the peak changes in BP chronically, but not acutely. Baseline ACE levels had no predictive value. Yet, after acute drug intake, the degree of ACE inhibition, like Δrenin, did correlate with ΔBP. Only the relationship with Δrenin remained significant after chronic RAS blockade. Thus, a high degree of ACE inhibition and a steep renin rise associate with larger acute responses to enalapril. However, variation was large, ranging >50 mm Hg for a given degree of ACE inhibition or Δrenin. The same was true for the relationships between Δrenin and ΔBP, and between baseline renin and the maximum reduction in BP in the chronic study. CONCLUSIONS Our data do not support that RAS phenotyping will help to predict the individual BP response to RAS blockade. Notably, these conclusions were reached in a carefully characterized, homogenous population, and when taking into account the known fluctuations in renin that relate to gender, age, ethnicity, salt intake and diuretic treatment, it seems unlikely that a cut-off renin level can be defined that has predictive value.
Collapse
|
12
|
Li LJ, Zhang FB, Liu SY, Tian YH, Le F, Wang LY, Lou HY, Xu XR, Huang HF, Jin F. Human sperm devoid of germinal angiotensin-converting enzyme is responsible for total fertilization failure and lower fertilization rates by conventional in vitro fertilization. Biol Reprod 2014; 90:125. [PMID: 24790158 DOI: 10.1095/biolreprod.113.114827] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In conventional in vitro fertilization (IVF), complete failure of fertilization occurs in 5% to 15% of treatments. Although the causes may be unclear, sperm defects appear to be the major contributor. However, a convincing test is not yet available that can predict the risk of fertilization failure. In this study, we found that germinal angiotensin-converting enzyme (gACE) (also called testicular ACE) was undetectable in sperm from patients who had total fertilization failure (TFF) and lower fertilization rates (LFRs) by IVF based on Western blot and indirect immunofluorescence analyses. Additionally, almost all of the patients without gACE on sperm (23 of 25) manifested a TT genotype of the rs4316 single-nucleotide polymorphism of ACE. Overall, our results indicate that the absence of gACE expression is responsible for TFF and LFRs by IVF. The rs4316 polymorphism of ACE might be associated with infertility in those patients. We conclude that sperm lacking gACE may be recognized before commencing IVF and that the patients may be directed instead to consider intracytoplasmic sperm injection.
Collapse
Affiliation(s)
- Le-Jun Li
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Feng-Bin Zhang
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Shu-Yuan Liu
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yong-Hong Tian
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Fang Le
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Li-Ya Wang
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Hang-Ying Lou
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xiang-Rong Xu
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - He-Feng Huang
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Fan Jin
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China Key Laboratory of Reproductive Genetics, National Ministry of Education (Zhejiang University), Women's Reproductive Health Laboratory of Zhejiang Province, Hangzhou, Zhejiang, China
| |
Collapse
|
13
|
Fagyas M, Úri K, Siket IM, Daragó A, Boczán J, Bányai E, Édes I, Papp Z, Tóth A. New perspectives in the renin-angiotensin-aldosterone system (RAAS) III: endogenous inhibition of angiotensin converting enzyme (ACE) provides protection against cardiovascular diseases. PLoS One 2014; 9:e93719. [PMID: 24690767 PMCID: PMC3972147 DOI: 10.1371/journal.pone.0093719] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 01/07/2014] [Indexed: 11/19/2022] Open
Abstract
ACE inhibitor drugs decrease mortality by up to one-fifth in cardiovascular patients. Surprisingly, there are reports dating back to 1979 suggesting the existence of endogenous ACE inhibitors. Here we investigated the clinical significance of this potential endogenous ACE inhibition. ACE concentration and activity was measured in patient's serum samples (n = 151). ACE concentration was found to be in a wide range (47–288 ng/mL). ACE activity decreased with the increasing concentration of the serum albumin (HSA): ACE activity was 56±1 U/L in the presence of 2.4±0.3 mg/mL HSA, compared to 39±1 U/L in the presence of 12±1 mg/mL HSA (values are mean±SEM). Effects of the differences in ACE concentration were suppressed in human sera: patients with ACE DD genotype exhibited a 64% higher serum ACE concentration (range, 74–288 ng/mL, median, 155.2 ng/mL, n = 52) compared to patients with II genotype (range, 47–194 ng/mL, median, 94.5 ng/mL, n = 28) while the difference in ACE activities was only 32% (range, 27.3–59.8 U/L, median, 43.11 U/L, and range 15.6–55.4 U/L, median, 32.74 U/L, respectively) in the presence of 12±1 mg/mL HSA. No correlations were found between serum ACE concentration (or genotype) and cardiovascular diseases, in accordance with the proposed suppressed physiological ACE activities by HSA (concentration in the sera of these patients: 48.5±0.5 mg/mL) or other endogenous inhibitors. Main implications are that (1) physiological ACE activity can be stabilized at a low level by endogenous ACE inhibitors, such as HSA; (2) angiotensin II elimination may have a significant role in angiotensin II related pathologies.
Collapse
Affiliation(s)
- Miklós Fagyas
- Division of Clinical Physiology, Institute of Cardiology, University of Debrecen, Debrecen, Hungary
| | - Katalin Úri
- Division of Clinical Physiology, Institute of Cardiology, University of Debrecen, Debrecen, Hungary
| | - Ivetta M. Siket
- Division of Clinical Physiology, Institute of Cardiology, University of Debrecen, Debrecen, Hungary
| | - Andrea Daragó
- Division of Clinical Physiology, Institute of Cardiology, University of Debrecen, Debrecen, Hungary
| | - Judit Boczán
- Department of Neurology, University of Debrecen, Debrecen, Hungary
| | - Emese Bányai
- Institute of Internal Medicine, Division of Nephrology, University of Debrecen, Debrecen, Hungary
| | - István Édes
- Division of Clinical Physiology, Institute of Cardiology, University of Debrecen, Debrecen, Hungary
| | - Zoltán Papp
- Division of Clinical Physiology, Institute of Cardiology, University of Debrecen, Debrecen, Hungary
| | - Attila Tóth
- Division of Clinical Physiology, Institute of Cardiology, University of Debrecen, Debrecen, Hungary
- * E-mail:
| |
Collapse
|
14
|
Danilov SM, Wade MS, Schwager SL, Douglas RG, Nesterovitch AB, Popova IA, Hogarth KD, Bhardwaj N, Schwartz DE, Sturrock ED, Garcia JGN. A novel angiotensin I-converting enzyme mutation (S333W) impairs N-domain enzymatic cleavage of the anti-fibrotic peptide, AcSDKP. PLoS One 2014; 9:e88001. [PMID: 24505347 PMCID: PMC3913711 DOI: 10.1371/journal.pone.0088001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 01/03/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Angiotensin I-converting enzyme (ACE) has two functional N- and C-domain active centers that display differences in the metabolism of biologically-active peptides including the hemoregulatory tetrapeptide, Ac-SDKP, hydrolysed preferentially by the N domain active center. Elevated Ac-SDKP concentrations are associated with reduced tissue fibrosis. RESULTS We identified a patient of African descent exhibiting unusual blood ACE kinetics with reduced relative hydrolysis of two synthetic ACE substrates (ZPHL/HHL ratio) suggestive of the ACE N domain center inactivation. Inhibition of blood ACE activity by anti-catalytic mAbs and ACE inhibitors and conformational fingerprint of blood ACE suggested overall conformational changes in the ACE molecule and sequencing identified Ser333Trp substitution in the N domain of ACE. In silico analysis demonstrated S333W localized in the S1 pocket of the active site of the N domain with the bulky Trp adversely affecting binding of ACE substrates due to steric hindrance. Expression of mutant ACE (S333W) in CHO cells confirmed altered kinetic properties of mutant ACE and conformational changes in the N domain. Further, the S333W mutant displayed decreased ability (5-fold) to cleave the physiological substrate AcSDKP compared to wild-type ACE. CONCLUSIONS AND SIGNIFICANCE A novel Ser333Trp ACE mutation results in dramatic changes in ACE kinetic properties and lowered clearance of Ac-SDKP. Individuals with this mutation (likely with significantly increased levels of the hemoregulatory tetrapeptide in blood and tissues), may confer protection against fibrosis.
Collapse
Affiliation(s)
- Sergei M. Danilov
- Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, Illinois, United States of America
- * E-mail:
| | - Michael S. Wade
- Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Sylva L. Schwager
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Biochemistry, University of Cape Town, Cape Town, South Africa
| | - Ross G. Douglas
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Biochemistry, University of Cape Town, Cape Town, South Africa
| | | | - Isolda A. Popova
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois, United States of America
| | - Kyle D. Hogarth
- Department of Medicine, University of Chicago, Chicago, Illinois, United States of America
| | - Nakul Bhardwaj
- Department of Medicine, University of Chicago, Chicago, Illinois, United States of America
| | - David E. Schwartz
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Edward D. Sturrock
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Biochemistry, University of Cape Town, Cape Town, South Africa
| | - Joe G. N. Garcia
- Department of Medicine, University of Arizona, Tucson, Arizona, United States of America
| |
Collapse
|
15
|
Tissue-specific expression of transgenic secreted ACE in vasculature can restore normal kidney functions, but not blood pressure, of Ace-/- mice. PLoS One 2014; 9:e87484. [PMID: 24475296 PMCID: PMC3903672 DOI: 10.1371/journal.pone.0087484] [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: 09/14/2013] [Accepted: 12/23/2013] [Indexed: 11/19/2022] Open
Abstract
Angiotensin-converting enzyme (ACE) regulates normal blood pressure and fluid homeostasis through its action in the renin-angiotensin-system (RAS). Ace-/- mice are smaller in size, have low blood pressure and defective kidney structure and functions. All of these defects are cured by transgenic expression of somatic ACE (sACE) in vascular endothelial cells of Ace-/- mice. sACE is expressed on the surface of vascular endothelial cells and undergoes a natural cleavage secretion process to generate a soluble form in the body fluids. Both the tissue-bound and the soluble forms of ACE are enzymatically active, and generate the vasoactive octapeptide Angiotensin II (Ang II) with equal efficiency. To assess the relative physiological roles of the secreted and the cell-bound forms of ACE, we expressed, in the vascular endothelial cells of Ace-/- mice, the ectodomain of sACE, which corresponded to only the secreted form of ACE. Our results demonstrated that the secreted form of ACE could normalize kidney functions and RAS integrity, growth and development of Ace-/- mice, but not their blood pressure. This study clearly demonstrates that the secreted form of ACE cannot replace the tissue-bound ACE for maintaining normal blood pressure; a suitable balance between the tissue-bound and the soluble forms of ACE is essential for maintaining all physiological functions of ACE.
Collapse
|
16
|
He Q, Fan C, Yu M, Wallar G, Zhang ZF, Wang L, Zhang X, Hu R. Associations of ACE gene insertion/deletion polymorphism, ACE activity, and ACE mRNA expression with hypertension in a Chinese population. PLoS One 2013; 8:e75870. [PMID: 24098401 PMCID: PMC3787994 DOI: 10.1371/journal.pone.0075870] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Accepted: 08/18/2013] [Indexed: 11/19/2022] Open
Abstract
Background The present study was designed to explore the association of angiotensin converting enzyme (ACE) gene insertion/deletion (I/D, rs4646994) polymorphism, plasma ACE activity, and circulating ACE mRNA expression with essential hypertension (EH) in a Chinese population. In addition, a new detection method for circulating ACE mRNA expression was explored. Methods The research was approved by the ethics committee of Zhejiang Provincial Center for Disease Prevention and Control. Written informed consent was obtained prior to the investigation. 221 hypertensives (cases) and 221 normotensives (controls) were interviewed, subjected to a physical examination, and provided blood for biochemical and genetic tests. The ACE mRNA expression was analyzed by real time fluorescent quantitative Reverse Transcription PCR (FQ-RT-PCR). We performed logistic regression to assess associations of ACE I/D genotypes, ACE activity, and ACE mRNA expression levels with hypertension. Results The results of the multivariate logistic regression analysis showed that the additive model (ID, DD versus II) of the ACE genotype revealed an association with hypertension with adjusted OR of 1.43(95% CI: 1.04-1.97), and ACE ID genotype with adjusted OR of 1.72(95% CI: 1.01-2.92), DD genotype with adjusted OR of 1.94(95% CI: 1.01-3.73), respectively. In addition, our data also indicate that plasma ACE activity (adjusted OR was 1.13(95% CI: 1.08-1.18)) was significantly related to hypertension. However, the plasma ACE mRNA expressions were not different between the cases and controls. Conclusion ACE I/D polymorphism and ACE activity revealed significant influence on hypertension, while circulating ACE mRNA expression was not important factors associated with hypertension in this Chinese population. The detection of circulating ACE mRNA expression by FQ-RT-PCR might be a useful method for early screening and monitoring of EH.
Collapse
Affiliation(s)
- Qingfang He
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | | | - Min Yu
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
- * E-mail:
| | - Gina Wallar
- Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America
| | - Zuo-Feng Zhang
- Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America
| | - Lixin Wang
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | - Xinwei Zhang
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | - Ruying Hu
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| |
Collapse
|