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Suciu A, Starybrat D, Gil-Morales C, Matson H, Jepson R, Williams M, Lyraki M, McMahon L, Nerhagen S, Veitch A, Llewellyn E. Clinical findings, treatment and outcome of trapped neutrophil syndrome in Border Collies: 12 cases (2011-2022). J Small Anim Pract 2024. [PMID: 38622907 DOI: 10.1111/jsap.13726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/24/2024] [Accepted: 03/02/2024] [Indexed: 04/17/2024]
Abstract
OBJECTIVES This study aimed to evaluate clinical signs, diagnostic findings, treatment administered and short- (survival to 28 days) and long-term prognosis (survival >6 months) in dogs diagnosed with trapped neutrophil syndrome. MATERIALS AND METHODS Medical records of 12 dogs (10 Border Collies and two Border Collie Crossbreeds) homozygous for VPS13B gene mutation causing trapped neutrophil syndrome from seven veterinary institutions between January 2011 and June 2022 were evaluated retrospectively. RESULTS The most common clinical signs at the time of diagnosis were pyrexia, abnormal gait and gastrointestinal signs. Concurrent metaphyseal osteopathy and immune-mediated polyarthritis were common. Seven dogs had a segmented neutrophil count below, four dogs within and one dog above the analyser reference interval at presentation. Two dogs had a septic source identified and both were additionally identified to be homozygous mutant positive on DNA testing by polymerase chain reaction (PCR) for canine cyclic neutropenia. All dogs received at least one antimicrobial agent and 10 dogs received treatment with prednisone or prednisolone (median starting dose 1 mg/kg/day; range 0.5 to 2.5 mg/kg/day). Nine dogs were alive at 28 days and six dogs were alive at 6 months post-diagnosis. CLINICAL SIGNIFICANCE Trapped neutrophil syndrome should be suspected in young Border Collies with pyrexia, lameness and gastrointestinal signs. Neutropenia may not always be present and long-term survival is possible. A septic focus was not commonly identified in our population; however, our results suggest that if identified, testing for concurrent canine cyclic neutropenia should be considered.
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Affiliation(s)
- A Suciu
- Hospital for Small Animals, The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - D Starybrat
- Hospital for Small Animals, The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - C Gil-Morales
- School of Veterinary Sciences, University of Bristol, Bristol, UK
| | - H Matson
- Department of Clinical Science and Services, Royal Veterinary College, Queen Mother Hospital for Animals, Hawkshead Lane, North Mymms, Herts, London, AL9 7TA, UK
| | - R Jepson
- Department of Clinical Science and Services, Royal Veterinary College, Queen Mother Hospital for Animals, Hawkshead Lane, North Mymms, Herts, London, AL9 7TA, UK
| | - M Williams
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO, USA
| | - M Lyraki
- School of Veterinary Sciences, University of Bristol, Bristol, UK
| | - L McMahon
- Anderson Moores Veterinary Specialists, The Granary, Bunstead Barns, Poles Lane, Hursley, Winchester, Hampshire, SO21 2LL, UK
| | - S Nerhagen
- Faculty of Veterinary Medicine, Department of Companion Animal Clinical Sciences, Norwegian University of Life Sciences, Ås, Norway
| | - A Veitch
- Dryfe Vets Ltd, 1 Mains Street, Lockerbie, DG11 2DG, UK
| | - E Llewellyn
- Hospital for Small Animals, The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
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Deleanu M, Toma L, Sanda GM, Barbălată T, Niculescu LŞ, Sima AV, Deleanu C, Săcărescu L, Suciu A, Alexandru G, Crişan I, Popescu M, Stancu CS. Formulation of Phytosomes with Extracts of Ginger Rhizomes and Rosehips with Improved Bioavailability, Antioxidant and Anti-Inflammatory Effects In Vivo. Pharmaceutics 2023; 15:pharmaceutics15041066. [PMID: 37111552 PMCID: PMC10146199 DOI: 10.3390/pharmaceutics15041066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/09/2023] [Accepted: 03/21/2023] [Indexed: 03/29/2023] Open
Abstract
The poor water solubility of natural antioxidants restricts their bioavailability and therapeutic use. We aimed to develop a new phytosome formulation with active compounds from extracts of ginger (GINex) and rosehips (ROSAex) designed to increase their bioavailability, antioxidant and anti-inflammatory properties. The phytosomes (PHYTOGINROSA-PGR) were prepared from freeze-dried GINex, ROSAex and phosphatidylcholine (PC) in different mass ratios using the thin-layer hydration method. PGR was characterized for structure, size, zeta potential, and encapsulation efficiency. Results showed that PGR comprises several different populations of particles, their size increasing with ROSAex concentration, having a zeta potential of ~-21mV. The encapsulation efficiency of 6-gingerol and β-carotene was >80%. 31P NMR spectra showed that the shielding effect of the phosphorus atom in PC is proportional to the amount of ROSAex in PGR. PGR with a mass ratio GINex:ROSAex:PC-0.5:0.5:1 had the most effective antioxidant and anti-inflammatory effects in cultured human enterocytes. PGR-0.5:0.5:1 bioavailability and biodistribution were assessed in C57Bl/6J mice, and their antioxidant and anti-inflammatory effects were evaluated after administration by gavage to C57Bl/6J mice prior to LPS-induced systemic inflammation. Compared to extracts, PGR induced a 2.6-fold increase in 6-gingerol levels in plasma and over 40% in the liver and kidneys, in parallel with a 65% decrease in the stomach. PGR treatment of mice with systemic inflammation increased the sera antioxidant enzymes paraoxonase-1 and superoxide dismutase-2 and decreased the proinflammatory TNFα and IL-1β levels in the liver and small intestine. No toxicity was induced by PGR either in vitro or in vivo. In conclusion, the phytosome formulation of GINex and ROSAex we developed resulted in stable complexes for oral administration with increased bioavailability, antioxidant and anti-inflammatory potential of their active compounds.
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Affiliation(s)
- Mariana Deleanu
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, 8 B.P. Haşdeu Street, 050568 Bucharest, Romania
| | - Laura Toma
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, 8 B.P. Haşdeu Street, 050568 Bucharest, Romania
| | - Gabriela Maria Sanda
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, 8 B.P. Haşdeu Street, 050568 Bucharest, Romania
| | - Teodora Barbălată
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, 8 B.P. Haşdeu Street, 050568 Bucharest, Romania
| | - Loredan Ştefan Niculescu
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, 8 B.P. Haşdeu Street, 050568 Bucharest, Romania
| | - Anca Volumnia Sima
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, 8 B.P. Haşdeu Street, 050568 Bucharest, Romania
| | - Calin Deleanu
- “Costin D. Nenitescu” Institute of Organic and Supramolecular Chemistry of the Romanian Academy, 202B Splaiul Independenței Street, 060023 Bucharest, Romania
- “Petru Poni” Institute of Macromolecular Chemistry of the Romanian Academy, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania
| | - Liviu Săcărescu
- “Petru Poni” Institute of Macromolecular Chemistry of the Romanian Academy, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania
| | - Alexandru Suciu
- Hofigal Export Import S.A., 2 Intrarea Serelor, 042124 Bucharest, Romania
| | - Georgeta Alexandru
- Hofigal Export Import S.A., 2 Intrarea Serelor, 042124 Bucharest, Romania
| | - Iuliana Crişan
- Hofigal Export Import S.A., 2 Intrarea Serelor, 042124 Bucharest, Romania
| | - Mariana Popescu
- Hofigal Export Import S.A., 2 Intrarea Serelor, 042124 Bucharest, Romania
| | - Camelia Sorina Stancu
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, 8 B.P. Haşdeu Street, 050568 Bucharest, Romania
- Correspondence: ; Tel.: (+4021)319-45-18
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Degi C, Kallay E, Medrea F, Suciu A. OA18.02 Canprim Beyond Oncology Into Primary Care Cancer Distress Follow-up Study Among Outpatients. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Crisan D, Grigorescu M, Crisan N, Craciun R, Lupsor M, Radu C, Grigorescu MD, Suciu A, Epure F, Avram L, Leach N. Association between PNPLA3[G]/I148M variant, steatosis and fibrosis stage in hepatitis C virus - genetic matters. J Physiol Pharmacol 2019; 70. [PMID: 31642820 DOI: 10.26402/jpp.2019.4.09] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 08/28/2019] [Indexed: 11/03/2022]
Abstract
There is an established correlation between the PNPLA3 rs738409 C > G single nucleotide polymorphism (SNP) and hepatic steatosis and fibrosis in hepatitis C virus (HCV) infected patients. However not all data is convergent regarding the exact impact of this SNP on the pattern of disease progression in different clinical settings. In this study, we aimed to further bridge the knowledge gap on this topic by investigating the role of the G allele in promoting steatosis, fibrosis and disease progression in relation to other metabolic and anthropometric host factors. Two hundred and fifty consecutive patients, previously diagnosed with chronic hepatitis C (CHC) underwent liver biopsy. Histology was assessed using the Metavir scoring system. Transient elastography was used for follow-up. Ninety-eight patients were genotyped for PNPLA3 rs738409 and followed up for fibrosis progression. PNPLA3 rs738409[G] allele was significantly correlated with severe steatosis (P = 0.04), severe fibrosis at the time of enrollment (P = 0.0005) and fibrosis progression with an OR of 10.31 (95% CI 1.06 - 99.59, P = 0.04), after a mean follow-up time of 62.85 (95%CI: 52.21 - 76.15) months. Severe steatosis at the time of enrollment had an OR of 11.02 (95% CI 1.48 - 82.09, P = 0.01) for the association with fibrosis progression. The HOMA-IR index was also positively correlated with severe fibrosis (P = 0.03) and fibrosis progression on univariate analysis (P = 0.02). PNPLA3 rs738409[G] allele is a reliable predictor for steatosis and fibrosis in CHC. The presence of G allele, along with severe steatosis and insulin resistance are significant predictors for fibrosis progression.
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Affiliation(s)
- D Crisan
- Fifth Medical Clinic, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Municipal Clinical Hospital, Cluj-Napoca, Romania
| | - M Grigorescu
- Third Medical Clinic, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.,"Prof. Dr. Octavian Fodor" Regional Institute of Gastroenterology and Hepatology Cluj-Napoca, Romania
| | - N Crisan
- Municipal Clinical Hospital, Cluj-Napoca, Romania. .,Department of Surgical Specialties, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - R Craciun
- "Prof. Dr. Octavian Fodor" Regional Institute of Gastroenterology and Hepatology Cluj-Napoca, Romania.
| | - M Lupsor
- "Prof. Dr. Octavian Fodor" Regional Institute of Gastroenterology and Hepatology Cluj-Napoca, Romania.,Department of Medical Imaging, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - C Radu
- Third Medical Clinic, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.,"Prof. Dr. Octavian Fodor" Regional Institute of Gastroenterology and Hepatology Cluj-Napoca, Romania
| | - M D Grigorescu
- "Prof. Dr. Octavian Fodor" Regional Institute of Gastroenterology and Hepatology Cluj-Napoca, Romania
| | - A Suciu
- "Prof. Dr. Octavian Fodor" Regional Institute of Gastroenterology and Hepatology Cluj-Napoca, Romania
| | - F Epure
- Department of Medical Imaging, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - L Avram
- Fifth Medical Clinic, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Municipal Clinical Hospital, Cluj-Napoca, Romania
| | - N Leach
- Fourth Medical Clinic, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
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5
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Mills CL, Garg R, Lee JS, Tian L, Suciu A, Cooperman GD, Beuning PJ, Ondrechen MJ. Functional classification of protein structures by local structure matching in graph representation. Protein Sci 2018; 27:1125-1135. [PMID: 29604149 PMCID: PMC5980557 DOI: 10.1002/pro.3416] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/21/2018] [Accepted: 03/26/2018] [Indexed: 11/08/2022]
Abstract
As a result of high‐throughput protein structure initiatives, over 14,400 protein structures have been solved by Structural Genomics (SG) centers and participating research groups. While the totality of SG data represents a tremendous contribution to genomics and structural biology, reliable functional information for these proteins is generally lacking. Better functional predictions for SG proteins will add substantial value to the structural information already obtained. Our method described herein, Graph Representation of Active Sites for Prediction of Function (GRASP‐Func), predicts quickly and accurately the biochemical function of proteins by representing residues at the predicted local active site as graphs rather than in Cartesian coordinates. We compare the GRASP‐Func method to our previously reported method, Structurally Aligned Local Sites of Activity (SALSA), using the Ribulose Phosphate Binding Barrel (RPBB), 6‐Hairpin Glycosidase (6‐HG), and Concanavalin A‐like Lectins/Glucanase (CAL/G) superfamilies as test cases. In each of the superfamilies, SALSA and the much faster method GRASP‐Func yield similar correct classification of previously characterized proteins, providing a validated benchmark for the new method. In addition, we analyzed SG proteins using our SALSA and GRASP‐Func methods to predict function. Forty‐one SG proteins in the RPBB superfamily, nine SG proteins in the 6‐HG superfamily, and one SG protein in the CAL/G superfamily were successfully classified into one of the functional families in their respective superfamily by both methods. This improved, faster, validated computational method can yield more reliable predictions of function that can be used for a wide variety of applications by the community.
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Affiliation(s)
- Caitlyn L Mills
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts
| | - Rohan Garg
- College of Computer and Information Science, Northeastern University, Boston, Massachusetts
| | - Joslynn S Lee
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts
| | - Liang Tian
- Department of Mathematics, Northeastern University, Boston, Massachusetts
| | - Alexandru Suciu
- Department of Mathematics, Northeastern University, Boston, Massachusetts
| | - Gene D Cooperman
- College of Computer and Information Science, Northeastern University, Boston, Massachusetts
| | - Penny J Beuning
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts
| | - Mary Jo Ondrechen
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts
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6
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Mills CL, Garg R, Lee JS, Parasuram R, Tian L, Suciu A, Cooperman G, Beuning P, Ondrechen MJ. Functional assignment of Structural Genomics proteins through computed chemical properties, graph representation of active sites, and biochemical validation. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.lb94] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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7
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Crisan D, Radu C, Suciu A, Leach N, Stefanescu H, Avram L, Crisan N, Grigorescu M. Hepatitis C in nonobese nondiabetic patients: Insulin resistance and the metabolic syndrome make a difference. J Viral Hepat 2017; 24:86-87. [PMID: 27700001 DOI: 10.1111/jvh.12610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- D Crisan
- 5th Medical Clinic, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Clinical Municipal Hospital, Cluj-Napoca, Romania
| | - C Radu
- 3rd Medical Clinic, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Hepatology Unit, Regional Institute of Gastroenterology and Hepatology, Cluj-Napoca, Romania
| | - A Suciu
- 3rd Medical Clinic, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - N Leach
- 4th Medical Clinic, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - H Stefanescu
- Hepatology Unit, Regional Institute of Gastroenterology and Hepatology, Cluj-Napoca, Romania
| | - L Avram
- Clinical Municipal Hospital, Cluj-Napoca, Romania
| | - N Crisan
- Clinical Municipal Hospital, Cluj-Napoca, Romania.,Department of Surgery, Iuliu-Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - M Grigorescu
- Hepatology Unit, Regional Institute of Gastroenterology and Hepatology, Cluj-Napoca, Romania
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Bara T, Borz C, Suciu A, Denes M, Torok A, Borz B, Marian D. Laparoscopic Greater Curvature Plication for Morbid Obesity: Indications, Results, Perspectives. Acta Medica Marisiensis 2015. [DOI: 10.1515/amma-2015-0041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Morbid obesity is an important health problem of our century. It is managed by diet, lifestyle changes and medication and surgery. Weight-loss surgery is the most effective treatment for morbid obesity, producing durable weight loss, improvement or remission of comorbid conditions and longer life. Bariatric surgery provides the best results in up to 75% of cases of severe obesity and obesity comorbidities. In the United States, over 200 000 patients benefit every year from bariatric procedures. That means there is a continuous evolving of the bariatric surgery. Bariatric surgery is metabolic surgery because it resolves or alleviates Type2 Diabetes, hyperlipidemia and hypertension. The most employed bariatric operations are Roux -en- Y gastric by-pass, adjustable gastric banding, biliopancreatic diversion and sleeve gastrectomy, each of them having shortage of long term results and safety. In the last eight years was introduced a new bariatric procedure, the gastric plication, in an effort to obtain similar weight loss with lesser complications and costs. We present our initial experience with 30 morbid obese patients who undergone laparoscopic gastric plication in our institution. The mean % Excess Weight Loss was 50% at 6 month and 65% at 12 month with important alleviation of comorbidities. The complications rate was 6.6% for major complications (but only in the first 6 cases) and 10% for minor complications.
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Affiliation(s)
- T Bara
- University of Medicine and Pharmacy Tîrgu-Mures, Romania
| | - C Borz
- University of Medicine and Pharmacy Tîrgu-Mures, Romania
| | - A Suciu
- University of Medicine and Pharmacy Tîrgu-Mures, Romania
| | - M Denes
- University of Medicine and Pharmacy Tîrgu-Mures, Romania
| | - A Torok
- University of Medicine and Pharmacy Tîrgu-Mures, Romania
| | - B Borz
- University of Medicine and Pharmacy Tîrgu-Mures, Romania
| | - D Marian
- University of Medicine and Pharmacy Tîrgu-Mures, Romania
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Török Á, Bancu Ş, Neagoe R, Mureşan M, Kántor T, Suciu A, Vas KE, Nagy Ö. The utility of the predictive scores in polytrauma with abdomino-pelvic injuries: a series of 38 patients. Chirurgia (Bucur) 2014; 109:44-47. [PMID: 24524469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2014] [Indexed: 06/03/2023]
Abstract
UNLABELLED Trauma is the principal cause of mortality among the population under 40 years. The aim of our study was to compare predictive trauma scores and demonstrate their utility in the evaluation of the quality of care in polytrauma. MATERIAL AND METHODS A retrospective study was performed between 2000-2011 including polytrauma patients with abdominal lesions and pelvic fracture who under went emergency laparotomy. We calculated ISS, GCS, RTS,TRISS, ASCOT trauma scores and W score for evaluation of treatment quality. RESULTS We obtained the necessary data to calculate the predictive scores in 38 cases. Comparing the scores of the survivals and non-survivals we noted the following regarding mortality predictive scores: GCS 13.74 vs. 6.13 (p 0.0001),ISS 28.52 vs. 35 (p=0.0169), RTS 6.96 vs. 3.07 (p 0.0001),TRISS 84.67% vs. 28.7% (p 0.0001), ASCOT 10.34% vs.64.32% (p 0.0001). The W score in TRISS and ASCOT methodology was -2.05 (p=0.7997) and -7.81 (p=0.336),respectively. There was no statistically significant difference between actual and predicted mortality, the former being 39.47%. CONCLUSION We did not observe differences between the two methodologies TRISS and ASCOT in mortality prediction (p=0.5401). Both of them can be used to predict polytrauma patient evolution. The W score is useful in treatment quality assessment.
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Abstract
[formula: see text] 5-Amino-2'-deoxyuridine 5'-triphosphate, an analogue of deoxythymidine triphosphate, was synthesized and found to be a substrate of Taq DNA polymerase. The DNA-borne analogue underwent selective chemical reaction with permanganate. The use of 5-amino-dU as an interference probe was validated using the Ada protein/ada promoter complex. The performance of 5-amino-dU in interference footprints is similar to that of the previously described analogue 5-hydroxy-dU, but the former is incorporated more readily into DNA during enzymatic polymerization.
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Affiliation(s)
- Michael J Storek
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
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Harrison VJ, Ziegler T, Bouzourene K, Suciu A, Silacci P, Hayoz D. Endothelin-1 and endothelin-converting enzyme-1 gene regulation by shear stress and flow-induced pressure. J Cardiovasc Pharmacol 1998; 31 Suppl 1:S38-41. [PMID: 9595394 DOI: 10.1097/00005344-199800001-00013] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hemodynamic forces have been shown to modulate the expression of endothelin (ET-1) and endothelin-converting enzyme (ECE-1) in endothelial cells. We have subjected E.A. hy 926 cells in culture to steady fluid shear stress with and without flow-induced pressure. The effect of combining these two mechanical forces on the expression of genes in the ET system was studied and the changes were compared to the mRNA levels in static culture. Analysis of total RNA by Northern blot analysis and RNAse protection showed that steady shear stress induced ET-1 gene expression three- to fourfold in this system. The same condition had little to no effect on altering expression of ECE-1 isoforms. A range of flow-induced pressure (80-160 mm Hg) was not able to further augment ET-1 or ECE-1 gene expression. Overall, with the mechanical environment studied, we have been able to detect a predominant contribution of shear stress to altering the ET-1 gene in our system. Furthermore, this induction was independent of an alteration of ECE-1 gene levels, suggesting that these two genes have a different pattern of regulation by the same stimuli in this cell type.
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Affiliation(s)
- V J Harrison
- Division of Hypertension and Vascular Medicine, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
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12
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Suciu A, Civelekoglu G, Tardy Y, Meister JJ. Model for the alignment of actin filaments in endothelial cells subjected to fluid shear stress. Bull Math Biol 1997; 59:1029-46. [PMID: 9358734 DOI: 10.1007/bf02460100] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Cultured vascular endothelial cells undergo significant morphological changes when subjected to sustained fluid shear stress. The cells elongate and align in the direction of applied flow. Accompanying this shape change is a reorganization at the intracellular level. The cytoskeletal actin filaments reorient in the direction of the cells' long axis. How this external stimulus is transmitted to the endothelial cytoskeleton still remains unclear. In this article, we present a theoretical model accounting for the cytoskeletal reorganization under the influence of fluid shear stress. We develop a system of integro-partial-differential equations describing the dynamics of actin filaments, the actin-binding proteins, and the drift of transmembrane proteins due to the fluid shear forces applied on the plasma membrane. Numerical simulations of the equations show that under certain conditions, initially randomly oriented cytoskeletal actin filaments reorient in structures parallel to the externally applied fluid shear forces. Thus, the model suggests a mechanism by which shear forces acting on the cell membrane can be transmitted to the entire cytoskeleton via molecular interactions alone.
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Affiliation(s)
- A Suciu
- Biomedical Engineering Laboratory, Swiss Federal Institute of Technology, Lausanne, Switzerland
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13
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Zhao S, Suciu A, Ziegler T, Moore JE, Bürki E, Meister JJ, Brunner HR. Synergistic effects of fluid shear stress and cyclic circumferential stretch on vascular endothelial cell morphology and cytoskeleton. Arterioscler Thromb Vasc Biol 1995; 15:1781-6. [PMID: 7583556 DOI: 10.1161/01.atv.15.10.1781] [Citation(s) in RCA: 151] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The development of atherosclerosis is thought to be initiated by a dysfunctional state of the vascular endothelium. The proposal that mechanical forces play a role in the localization of this disease has led researchers to develop in vitro models to assess their effects on cultured endothelial cells. The arterial endothelium is exposed simultaneously to circumferential hoop stretch and wall shear stress, yet previous investigations have focused on the isolated effects of either cyclic stretch or shear stress. The influence of physiological levels of combined shear stress and hoop stretch on the morphology and F-actin organization of bovine aortic endothelial cells was investigated. Cells subjected for 24 hours to shear stresses higher than 2 dyne/cm2 or to hoop stretch greater than 2% elongated significantly compared with unstressed controls and oriented along the direction of flow and perpendicular to the direction of stretch. Exposure to more than 4% stretch significantly enhanced the responses to shear stress. Both shear stress and hoop stretch induced formation of stress fibers that were aligned with the cells' long axes. Simultaneous exposure to both stimuli appeared to enhance stress fiber size and alignment. These results indicate that shear stress and hoop stretch synergistically induce morphological changes in endothelial cells, which suggests that circumferential strain might modulate sensitivity of endothelial cells towards shear stress.
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Affiliation(s)
- S Zhao
- Division of Hypertension, University Hospital of Lausanne, Switzerland
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Moore JE, Bürki E, Suciu A, Zhao S, Burnier M, Brunner HR, Meister JJ. A device for subjecting vascular endothelial cells to both fluid shear stress and circumferential cyclic stretch. Ann Biomed Eng 1994; 22:416-22. [PMID: 7998687 DOI: 10.1007/bf02368248] [Citation(s) in RCA: 88] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The proposal of the role of mechanical forces as a localizing factor of atherosclerosis has led many researchers to investigate their effects on vascular endothelial cells. Most previous efforts have concentrated on either the fluid shear stress, which results from the flow of blood, or the circumferential "hoop" stretch, which results from the expansion of the artery during the cardiac cycle. In fact, arterial endothelial cells are subjected to both fluid shear stress and cyclic hoop stretch in vivo. Therefore, a more complete investigation of mechanical phenomena on endothelial cell behavior should include both kinds of mechanical stimuli. This study was undertaken to design an experimental apparatus that could subject cultured vascular endothelial cells to simultaneous physiologic levels of both shear stress and cyclic hoop stretch. The experimental apparatus consists of four cylindrical elastic tubes so that the following conditions may be studied: (a) static conditions: (b) shear stress only; (c) hoop stretch only; and (d) shear stress and hoop stretch. In order to establish the functional capabilities of the apparatus, bovine pulmonary artery endothelial cells were cultured in the tubes, and their morphology and f-actin structure were observed with confocal microscopy. The cells remained healthy and attached to the walls throughout the 24 hr experiment. Preliminary results indicated that the alignment of endothelial cells subjected to shear stress was significantly enhanced by the addition of hoop strain.
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Affiliation(s)
- J E Moore
- Biomedical Engineering Laboratory, Swiss Federal Institute of Technology, Lausanne
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15
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Grigorescu M, Suciu A, Tăpălagă D, Dumitraşcu D. [The biochemical profile of the cholestatic syndrome]. Med Interna 1992; 44:34-40. [PMID: 1345058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
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16
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Băldescu R, Macarie E, Schioiu-Costache L, Suciu A. Canonical correlation analysis as a special method for the study of the structural relations of risk factors in cardiovascular diseases. Rom J Intern Med 1991; 29:133-8. [PMID: 1784940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- R Băldescu
- N. Gh. Lupu Institute of Internal Medicine, Bucharest, Romania
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17
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Cucu F, Purice S, Schioiu-Costache L, Damşa T, Suciu A, Cherciu A, Steinbach M. Seasonal variations of serum cholesterol detected in the Bucharest Multifactorial Prevention Trial of Coronary Heart Disease. Ten years follow-up (1971-1982). Rom J Intern Med 1991; 29:15-21. [PMID: 1947707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A group of 4800 men, aged fourty to sixty at entry, subjected to a multifactorial prevention trial of coronary heart disease for a ten-year period, showed spontaneous seasonal variations of serum cholesterol, characterized by increases in winter and decreases in summer. The authors discuss the relationship between the food changes and the seasonal variation of serum cholesterol values.
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Affiliation(s)
- F Cucu
- N. Gh. Lupu Institute of Internal Medicine, Bucharest, Romania
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18
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Andreica V, Suciu A, Dumitraşcu D, Drăghici A, Pascu O, Suciu M, Ban A. Biochemical changes induced by Campylobacter pylori in the gastric juice. Med Interne 1990; 28:145-52. [PMID: 2270423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The biochemical changes induced in the gastric juice by the presence of Campylobacter pylori (CP) were followed up in 151 patients with various gastric and duodenal diseases. The diagnosis of CP infection was made by the urease test. In the presence of CP urea decreased in the gastric juice and ammonia increased. The sialic acid, fucose and hexoses, glucide components of the mucus glycoproteins dissolved in the gastric juice, underwent no change in the presence of CP. The hexosamines in the gastric mucus increased significantly in CP patients. Urease activity is present in the gastric juice even in the absence of CP, probably due to other microorganisms present in the human stomach. This does not exclude the use of the urease test for the diagnosis of CP infection. However the test can only be used in the bioptically removed gastric mucosa samples, not in the gastric juice.
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Affiliation(s)
- V Andreica
- IIIrd Medical Clinic, Medicopharmaceutic Institute, Cluj-Napoca, Romania
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19
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Chirulescu Z, Suciu A, Tănăsescu C, Pîrvulescu R. Possible correlation between the zinc and copper concentrations involved in the pathogenesis of various forms of anemia. Med Interne 1990; 28:31-5. [PMID: 2284564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The concentrations of three trace elements (iron, copper and zinc) involved in hematopoiesis were studied in 200 patients with iron-deficit anemia, hemolytic anemia and Biermer's anemia, in comparison with a group of normal subjects. The method used was atomic absorption spectrophotometry. The results obtained showed that in iron-deficit anemia resistant to iron therapy the copper and ceruloplasmin serum concentrations are at the lowest limit of normal. This copper deficit has a negative effect on the disease by preventing hemoglobin synthesis. In iron-deficit anemias responding to iron therapy the relatively low (about 90 gamma %) zinc values have a negative effect by blocking the iron in the iron reserve. In hemolytic anemia the very high zinc serum concentrations (over 200 gamma %) may lead to a shortening of the erythrocytes life span due to its "entatic state". In Biermer's anemia zinc by its high concentration has a positive role owing to carbonic anhydrase which eliminates more rapidly carbon dioxide from the organism.
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Affiliation(s)
- Z Chirulescu
- N. Gh. Lupu Institute of Internal Medicine, Bucharest, Romania
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20
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Grigorescu M, Suciu A, Georoceanu A, Erdosy S, Cotul S, Tamaş S, Dumitraşcu D. [Exocrine function in chronic pancreatitis]. Rev Med Interna Neurol Psihiatr Neurochir Dermatovenerol Med Interna 1988; 40:459-68. [PMID: 2908148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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21
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Chirulescu Z, Chiriloiu C, Suciu A, Pîrvulescu R. Variations of zinc, calcium and magnesium in normal subjects and in patients with neoplasias. Med Interne 1987; 25:257-61. [PMID: 3423702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The serum zinc, calcium and magnesium concentration as well as the possible relationship between these elements was determined by means of atomic absorption spectrophotometry in 150 patients with prostatic, lung, liver and breast neoplasms as well as with chronic leukemia, and in 80 normal subjects. These determinations showed that zinc concentration is increased in almost all the forms of cancer except prostatic and lung cancer in which the zinc values were below the lowest normal limits. From this study it also resulted that high zinc values favour the development of cancer. The antagonic relationship between zinc and calcium or magnesium in neoplasias proves the protective role played by the latter elements in the forms of cancer in such cases.
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Affiliation(s)
- Z Chirulescu
- N. Gh. Lupu Institute of Internal Medicine, Bucharest, Romania
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22
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Andreica V, Dumitraşcu D, Suciu A, Sendrea D, Erdosy S, Drăghici A, Pascu O, Părău N, Galu A. Contributions to the study of gastric carcinogenesis. Med Interne 1987; 25:15-24. [PMID: 3589444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Investigations were carried out on duodeno- and jejunogastric reflux, gastric juice acidity, microbial population and the concentration of nitrites in 199 subjects. In gastric cancer patients or those with gastric ulcer, chronic atrophic gastritis, stomach resection or more seldom with removal of the gallbladder, a significant increase over normal values of the pH, duodenogastric reflux, microbial flora contamination (especially intestinal) and nitrite concentration was found. In smokers the salivary nitrite concentration was greater than in non-smokers and in direct relationship to gastric concentrations. The parallelism of these alterations suggests a causative relation between them and their presence in diseases or conditions of notorious increased incidence in gastric cancer highlights the direction to be followed in the primary prophylaxis of this disease.
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23
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Chirulescu Z, Suciu A, Chiriloiu C, Pîrvulescu R, Micu D. Study of the relationship between the granulocyte LDH, alkaline phosphatase and Zn at the level of the leukocyte in patients with chronic myeloid leukemia. Med Interne 1986; 24:221-5. [PMID: 3465014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Mixed leukocyte suspensions were prepared from heparinized blood collected from healthy subjects and from patients with chronic myeloid leukemia (CML). In all the suspensions determinations were made for: zinc, by atomic absorption; granulocyte alkaline phosphatase (GAP), using the method with p-nitrophenylphosphatase; granulocyte LDH, by means of the enzymatic autoanalyser LKD 8,600. In the patients with CML, the values of zinc and of granulocyte alkaline phosphatase activity were very low while the granulocyte LDH values were higher than normal. The chromatogram of the granulocyte LDH isoenzymes on DEAE-Sephadex A50 minicolumn (0.5 X 12 cm) showed an "alpha type abnormality" revealed by the increased activity of the isoenzymes with high electrophoretic mobility LDH2 and LDH1 specific for tissues with intense oxidative phosphorylation. In the normal subjects the chromatogram of the leukocyte LDH isoenzymes showed a type M (skeletal muscle) prevalence denoting intense anaerobic glycolysis. Therefore the low zinc concentrations (0.55 micrograms mg N2 as compared with the normal 1.24 micrograms mg N2) in these patients cause the decrease of GAP activity by the lack of zinc in the active center of the enzyme and the decrease of cellular permeability thus allowing the extracellular release of granulocyte LDH.
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24
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Chirulescu Z, Chiriloiu C, Suciu A, Popescu M, Micu D. Alkaline phosphatase activity improved by the addition of zinc in granulocytes from leukemic subjects (in vitro study). Med Interne 1984; 22:293-6. [PMID: 6595761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Granulocyte alkaline phosphatase (GAP) was extracted from the leukocyte suspensions of 15 subjects with chronic myeloid leukemia (CML), determining the Zn content by atomic absorption spectrophotometry. The purified enzymatic preparation was dialyzed against a ZnCl2 solution (.01 mg%) in TRIS-HCl 0.1 M, pH 7.5, for 48 hours. After dialysis Zn concentration and GAP activity reached normal values. This suggests that the GAP molecule isolated from CML subjects is not altered as it is able to receive at most 2 Zn moles responsible for the enzymatic function.
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25
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Dumitraşcu D, Acalovschi M, Mârza I, Suciu A. Gallstones--mineralogical and chemical investigations. Med Interne 1984; 22:209-12. [PMID: 6494769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A comparative study of the mineralogical-structural characteristics and chemical composition of gallstones was performed on stone samples removed intraoperatively from the gallbladders of 12 patients. The study included all the types of gallstones. Their chemical components determined were: bilirubin, cholesterol, phospholipids, calcium, proteins. The stones were examined physically (size, number, shape, color) and the radial or concentric disposition of the layers was estimated on cross-sections. Thin sections (2 X 10(-2)mm) were obtained and examined by polarizing microscope in order to observe the inner structural characteristics. The crystallographic analysis of all the types of stones studied is reported. In all the samples, a perfect concordance was found between the mineralogical structure and the chemical composition of the gallstones. The results obtained are valuable premises for further research in the formation of stones, since a mineralogical study offers the possibility to estimate variations of crystal aggregation, according to the local changes of the gallbladder (inflammation, bacterial growth, pH, etc.).
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26
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Acalovschi M, Suciu A, Florea M, Dumitrascu D, Grigorescu M. [Major biliary lipids and plasma lipids. A study of cholesterol biliary lithiasis]. Acta Gastroenterol Belg 1984; 47:381-6. [PMID: 6524264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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27
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Chirulescu Z, Chiriloiu C, Suciu A, Popescu M, Micu D. The relationship zinc--alkaline phosphatase activity in normal and pathologic granulocytes. Med Interne 1983; 21:235-9. [PMID: 6582574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
To study the relationship granulocyte alkaline phosphatase (AP)--zinc (Zn) in mixed leukocyte suspensions, the enzyme from 51 mixed leukocyte suspensions was separated and purified. In the pure extract, determinations were carried out for enzymatic activity--using the autoanalyzer LKB 8600--and for Zn content--using atomic absorption spectrophotometry. From the data obtained it resulted that, in agreement with the results in the literature Zn concentration in the mixed leukocyte suspensions from chronic myeloid leukemia, (CML) patients is about half that in the normal controls (0.65 +/- 0.15 as compared with 1.24 +/- 0.15 micrograms/mg total nitrogen). Granulocyte AP separated from normal leukocyte suspensions was found to bind about 95% of the total Zn content, i.e., 1.21 +/- 0.15 micrograms/mg total nitrogen and its enzymatic activity was about 16 U/g total nitrogen. In CML patients the enzyme bound a mean Zn concentration of 0.55 +/- 0.15 micrograms/mg total nitrogen and its mean activity was 2.25 U/g total nitrogen, i.e., about 86% of the normal values found in the controls. The enzymatic activity decreased to zero after only 20 min dialysis with 8-hydroxyquinoleine-5-sulfonic acid (8HC5S) as compared with the 60-80 min in the controls. It can be concluded that the leukemic leukocyte is unable to form the metal-enzyme complex owing to the deficit of the Zn involved in the enzymatic activity.
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28
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Acalovschi M, Dumitraşcu D, Grigorescu M, Suciu A, Badea G, Paraian I. Pathogenetic interrelations between cholesterolosis and cholesterol gallstone disease. Med Interne 1983; 21:175-9. [PMID: 6665490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
In order to define the relationship between cholesterolosis (COL) and cholesterol gallstone disease (CGD), risk factors were comparatively investigated in a great number of patients. Sex, age and metabolic risk factors were the same for both diseases, but gallbladder anomalies and neuroendocrine disturbances were more often associated with COL. The lipid composition of the gallbladder bile was determined in patients with COL. The bile acid decrease and the increase of cholesterol molar concentration (moles %) were found, similar to those known in CGD. The similarity of risk factors and of bile lithogenicity, as well as the frequent association of COL and CGD suggest a pathogenic relationship of both diseases. Local morphological changes in conditions of high biliary cholesterol levels may be responsible for the intraparietal precipitation of cholesterol in COL. Thus, COL seem to be a peculiar variant of CGD and its classification into the heterogeneous group of cholecystoses is at present questionable.
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29
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Tapalaga D, Dumitrascu D, Grigorescu M, Suciu A. Chronic cholestatic hepatitis-primary biliary cirrhosis. Biochemical and immunologic parameters. Acta Gastroenterol Belg 1982; 45:386-91. [PMID: 6764078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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30
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Steinbach M, Constantineanu M, Harnagea P, Theodorini S, Georgescu M, Mitu S, Tănăseanu S, Tănăsescu C, Teodorescu S, Voiculescu M, Voiosu R, Cucu F, Suciu A, Schioiu L, Ciobanu F, Chirulescu Z, Schiau M, Cherciu M, Stoica V, David D, Stănescu C, Stefănescu S, Ionescu A. The Bucharest multifactorial prevention trial of coronary heart disease. General methodology and risk factor correction after five year follow-up (1971-1977). Med Interne 1982; 20:117-36. [PMID: 7123111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Both the intervention and the control group included each 5000 men aged 40-60 years, randomly selected by their home address in five districts of the city of Bucharest. The intervention group underwent an "at entry" examination for risk factor detection (high serum cholesterol, high blood pressure, overweight, diabetes, minor ECG abnormalities, family history) and subsequently a five-year multifactorial intervention aimed to reduce the risk factors. Both groups were followed up in this lapse of time for major end-points: myocardial infarction, stroke, sudden death. The qualitative analysis of the results used ten evolution indices based on a quantal counting and lead to a classification of risk factors which allowed the setting up of a strategy for their correction. The quantitative analysis showed the following decreases between the first and the last examination in the intervention group: for serum cholesterol greater than or equal to 250 mg/dl -17%; for cigarettes/day greater than or equal to 15-53%; for overweight greater than or equal to 30% - 13.57%; for high blood pressure -8%; for the overall risk computed by multiple regression -33.8%.
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31
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Tăpălagă D, Suciu A, Crăciun L, Serdean C, Dumitraşcu D. [Antipyrine test in chronic hepatic diseases]. Rev Med Interna Neurol Psihiatr Neurochir Dermatovenerol Med Interna 1982; 34:65-70. [PMID: 6125013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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32
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Barbarino F, Neumann E, Deaciuc I, Ghelberg NW, Suciu A, Cotuţiu C, Racoviţă L, Stroilă C, Nagy S, Părău N, Toader S, Brilinschi C. Effect of silymarin on experimental liver lesions. Med Interne 1981; 19:347-57. [PMID: 7336095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The effect of Silymarin (Legalon) upon liver lesions was investigated using four experimental models: In acute galactosamine-hepatitis, Silymarin administration achieved protection of the liver structure (electron-microscopy included), liver cell glycogen, RNA and enzymatic activity, Galactosamine-depressed gluconeogenesis in the isolated perfused rat liver was significantly preserved by Silymarin treatment. In lead and cadmium poisoning the structural damage and histochemical and histoenzymatic changes were partly but significantly prevented. The complex noxious effects of Imuran overdoses were favourably influenced by Silymarin, without diminishing the cytostatic-immunosuppressive action of Imuran.
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Chirulescu Z, Chiriloiu C, Suciu A. Separation of creatine-kinase isoenzymes on ion-exchange mini-columns for diagnostic purposes. Med Interne 1981; 19:383-8. [PMID: 7336099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
For diagnostic purposes, creatine-kinase (CK) isoenzymes were separated on mini-columns of DEAE Sephadex A50 from the serum of 55 patients with myocardial infarction or cerebral disturbances and from 45 normal subjects. The optimum conditions of separation were determined by separation of CK isoenzymes (CK--MM, CK--MB, CK--BB) from human organ homogenates (skeletal muscle, myocardium, brain). In the patients with myocardial infarction the CK-MB isoenzyme activity amounted to more than 6% of the total enzyme value. The chromatogram in these cases was similar to that of human myocardium homogenate. The CK-BB isoenzyme was found only in patients with severe cerebral disturbances (cerebral hemorrhage). In such cases the chromatogram was similar to that of human brain homogenate. Therefore, by associating the assay of serum CK total activity with the separation of CK isoenzymes it was proved that the CK--MB and CK--BB isoenzymes can supply a useful test in differential diagnosis.
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34
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Grigorescu M, Tăpălagă D, Dumitraşcu D, Suciu A, Martin P, Duca S. Gallbladder lipid composition in cholecystopathies. Med Interne 1981; 19:283-8. [PMID: 7302507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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35
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Grigorescu M, Tăpălagă D, Dumitraşcu D, Suciu A. Diagnostic value of serum bile acid determination in chronic hepatitis and liver cirrhosis. Med Interne 1980; 18:401-6. [PMID: 7455585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Fasting and postprandial total bile acid measurements were performed by an enzymatic method in the serum of 12 patients with chronic persistent hepatitis, 8 with chronic active hepatitis, 14 with cirrhosis and 10 with cholestatic chronic hepatitis, as well as in that of 22 normal controls. The results indicated a rise of serum bile acid concentration concomitant with the degree of morphologic liver injury. A significant rise of the fasting concentration of bile acids as compared to the control started with chronic active hepatitis. As postprandial bile acid level was significantly higher in all types of chronic hepatitis and cirrhosis and correlated significantly with most of the usual biochemical liver tests, it could be considered as a test of major diagnostic significance for chronic liver diseases.
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36
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Dumitraşco D, Grigoresco M, Părău N, Suciu A, Erdösy S. [Dysbacteriosis in enteropathies]. Med Interne 1980; 18:239-45. [PMID: 7414236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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37
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Suciu-Foca N, Susinno E, Godfrey M, McKiernan P, Rohowsky C, Sankel M, Suciu A. HLA-Antigens in the Romanian population. Transplant Proc 1979; 11:1732-4. [PMID: 531926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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38
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Suciu A, Suciu-Foca N. The genetics of LD2. I. Gene frequency: an estimation. Transplant Proc 1979; 11:1323-6. [PMID: 157570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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39
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Duca S, Suciu A, Angi E, Duca C, Tolan D, Deac D. [Improvement of the conditions of rat liver preservation by concomitant perfusion of the liver and kidney]. Rev Chir Oncol Radiol O R L Oftalmol Stomatol Chir 1979; 27:53-8. [PMID: 379926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
One of the factors limiting the duration of rat liver storage is the excessive accumulation of catabolites in the perfusion medium. In view of obtaining of an efficient depuration the authors have introduced a new circuit allowing for the concomittant perfusion of the liver and of the kidneys. The excretion effort of the kidneys is assessed by the estimation of urea nitrogen in the perfusion medium and in the urine collected over the entire duration of the experiment. The results have confirmed the good function of the system which provides possibilities for improved storage conditions of rat liver.
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40
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Dumitraşcu D, Deac M, Suciu A, Grigorescu M. [Disaccharidase activity of the jejunal mucosa in lactose intolerance]. Rev Med Interna Neurol Psihiatr Neurochir Dermatovenerol Med Interna 1978; 30:531-5. [PMID: 34858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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41
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Barbarino F, Neumann E, Tamas S, Suciu A, Andercou A, Abrudan O, Badea RI. Morphologic, histoenzymatic and radioisotopic changes in the liver after portal vein ligation. Med Interne 1978; 16:375-81. [PMID: 749175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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42
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Tăpălagă D, Cucuianu M, Suciu A. [Biochemical diagnosis of cholestasis]. Rev Med Interna Neurol Psihiatr Neurochir Dermatovenerol Med Interna 1978; 30:443-50. [PMID: 32598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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43
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Duca S, Suciu A, Duca C, Szantay I, Schwartz M, Lezeu R. Fibrin formation during asanguinous normothermic perfusion of the isolated rat liver. World J Surg 1978; 2:261-70. [PMID: 676337 DOI: 10.1007/bf01553569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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44
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Dumitrascu D, Grigorescu M, Erdosy S, Suciu A, Fodor O. [Influence of antibiotherapy on the metabolic activity of bacteria in the diffuse enteropathies (author's transl)]. Acta Gastroenterol Belg 1977; 40:435-41. [PMID: 645329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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45
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Duca S, Suciu A, Szantay I, Duca C, Lezeu R, Schwartz M, Szilagyi H. [Improvement in the perfusion rate of the isolated rat liver under the influence of streptase]. Rev Med Interna Neurol Psihiatr Neurochir Dermatovenerol Med Interna 1977; 29:177-83. [PMID: 17911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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46
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Barbarino F, Suciu A, Cotutiu C, Ban A. [The action of silymarin on Galactosamine-induced hepatitis in the rat (author's transl)]. Wien Klin Wochenschr 1977; 89:90-5. [PMID: 189515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The hepatoprotective action of Silymarin was studied in 65 male Wistar rats, prior to and following D-galactosamine intoxication. There was a marked reduction in the histological and ultrastructural changes in the nucleolus, nuclear membrane, mitochondria, granular and agranular endoplasmic reticulum and lysosomes of the liver cell and also in the Kupffer stellate cells. The reduction in glycogen and RNA loss was determined biochemically. The activities of many enzymes were kept constant (oxidoreductases, NADH2 diaphorase, G-6-phosphatase, Mg++ and K+/Na+-dependent ATPases, acid phosphatases).
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47
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Popescu MP, Popa C, Lăbuşcă-Tebeanu N, Ticeanu M, Suciu A. [Bilateral recurrent uveitic manifestations in a case of ophthalmoneuromyelitis]. Rev Chir Oncol Radiol O R L Oftalmol Stomatol Ser Oftalmol 1976; 20:127-31. [PMID: 133407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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48
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Steinbach M, Constantineanu M, Harnagea P, Theodorini S, Georgescu M, Georgescu A, Manicatide MA, Voiosu R, Cucu F, Suciu A, Chirulescu Z, Bitta R, Enculescu A, Oancea D, Popescu S, Schioiu L, Vasiliu F. Coronary heart disease and its risk factors in a group of 5,000 middle aged men in urban environment. Med Interne 1976; 14:3-10. [PMID: 946693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The results obtained at entry in the subjects included in a pilot study (Institute of Internal Medicine, Bucharest) for the detection and prevention of coronary heart disease and hypertension, are presented. These data are the prevalences of the risk factors of coronary heart disease (high serum cholesterol, hypertension, smoking, overweight, diabetes, nonspecific minor ECG signs, family history), as well as the prevalences of the various forms of coronary heart disease. The study of the frequency distribution of biologic parameters likely to become risk factors showed that in middle aged subjects the upper limit of the normal should be lowered from the 95th percentile to the 76th one.
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49
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Popescu MP, Colfescu S, Mihai C, Lăbuşcă-Tebeanu N, Eşanu I, Dumitrescu F, Mihăilă A, Suciu A. [Management of orbital neoplasms with invasion of surrounding tissues]. Rev Chir Oncol Radiol O R L Oftalmol Stomatol Ser Oftalmol 1976; 20:77-80. [PMID: 135296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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50
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Toader C, Duca S, Suciu A, Lezeu R, Duca C, Schwartz M, Cioroiu M, Berindeanu E. [Preservation of rat liver using prolonged perfusion with a complex solution lacking hemoglobin]. Rev Chir Oncol Radiol O R L Oftalmol Stomatol Chir 1976; 25:19-26. [PMID: 133378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The author's aim was to investigate conservation of rat liver by continuous perfusion of the isolated organ in conditions of normal temperature, as well as in hypothermia. A complex solution was used, lacking hemoglobin. Over a period of 5 hours of conservation the authors evaluated the perfusion rate, the concentration of lactate and pyruvate in the conservation medium, while on histological preparations was investigated the formation of fibrin deposits in the intra-hepatic vessels. The results confirmed the positive effects of hypothermia, that is not due exclusively to a limiting of the metabolic necessities of the organ but also to a reduction of the fibrinogenesis and a slowing down of the formation of intra-hepatic microaggregates.
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