1
|
Novac MB, Boldeanu L, Dijmărescu AL, Boldeanu MV, Neamțu SD, Radu L, Manolea MM, Șerbănescu MS, Stoica M, Rotaru LT, Văduva CC. Immune Responses of Healthy Pregnant Women following an Elective Cesarean Section: Effects of Anesthetic Procedures. Diagnostics (Basel) 2024; 14:880. [PMID: 38732295 PMCID: PMC11083323 DOI: 10.3390/diagnostics14090880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
A weakened immune system and more inflammatory cytokines being released are possible effects of the surgical stress that a cesarean section induces. This kind of reaction, in addition to the altered reaction to catecholamines, has the potential to significantly affect the immune system of the mother and the patients' general postoperative course. This prospective study compared the plasma levels of catecholamines and cytokines in healthy pregnant patients having cesarean sections under spinal anesthesia versus general anesthesia. A total of 30 pregnant women undergoing elective cesarean sections were divided into two groups: 15 who received general anesthesia (GA) and 15 who received spinal anesthesia (SA). Blood samples were collected from all subjects before anesthesia induction (pre-OP), 6 h postoperatively (6 h post-OP), and 12 h (12 h post-OP), to measure levels of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), IL-8, IL-4, IL-10, norepinephrine (NE), and epinephrine (EPI). When we compared the two groups, we discovered that only IL-6 and IL-4 had significantly higher levels pre-OP, whereas all studied cytokines exhibited an increase in the GA versus SA group at 6 and 12 h post-OP. In the case of catecholamines, we discovered that serum levels are positively related with pro-inflammatory or anti-inflammatory cytokines, depending on the time of day and type of anesthetic drugs. Compared to SA, GA has a more consistent effect on the inflammatory response and catecholamine levels. The findings of this study confirm that the type of anesthesia can alter postoperative immunomodulation to various degrees via changes in cytokine and catecholamine production. SA could be a preferable choice for cesarean section because it is an anesthetic method that reduces perioperative stress and allows for less opioid administration, impacting cytokine production with proper immunomodulation.
Collapse
Affiliation(s)
- Marius Bogdan Novac
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (M.B.N.); (M.S.)
| | - Lidia Boldeanu
- Department of Microbiology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Anda Lorena Dijmărescu
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (A.L.D.); (M.M.M.); (C.-C.V.)
| | - Mihail Virgil Boldeanu
- Department of Immunology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Simona Daniela Neamțu
- Department of Hematology and Immunology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Lucreţiu Radu
- Department of Hygiene, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Maria Magdalena Manolea
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (A.L.D.); (M.M.M.); (C.-C.V.)
| | - Mircea-Sebastian Șerbănescu
- Department of Medical Informatics and Biostatistics, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Maria Stoica
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (M.B.N.); (M.S.)
| | - Luciana Teodora Rotaru
- Department of Emergency Medicine and First Aid, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Constantin-Cristian Văduva
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (A.L.D.); (M.M.M.); (C.-C.V.)
| |
Collapse
|
2
|
Fruntealată RF, Balseanu TA, Nica O, Negrila AA, Petrovici IL, Marinescu EA, Stoica GA, Stoica M, Ciurea AM, Ciurea ME. Retrospective Study of a Patient with Multiple de Novo Skin Tumor Formations. Curr Health Sci J 2023; 49:434-437. [PMID: 38314212 PMCID: PMC10832871 DOI: 10.12865/chsj.49.03.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 06/25/2023] [Indexed: 02/06/2024]
Abstract
In Romania, the incidence of malignant melanocytic tumors is continuously increasing. According to the World Health Organization, the incidence of melanocytic and non-melanocytic skin neoplasms has increased considerably and globally, in the last decade. We present the case of a 49-year-old patient who, over the course of 7 years, came in the Plastic Surgery Clinic of the Emergency County Hospital of Craiova for the excision of a number of 25 skin tumor formations, located on the face, cervical region, trunk and upper limbs. Treatment included complete microsurgical excision and supervision. In the end, the patient's treatment compliance decreased significantly.
Collapse
Affiliation(s)
| | | | - Oliviu Nica
- Department of Plastic Surgery and reconstructive microsurgery, University of Medicine and Pharmacy of Craiova, Romania
| | - Alina Andreea Negrila
- Department of Plastic Surgery and reconstructive microsurgery, University of Medicine and Pharmacy of Craiova, Romania
| | | | - Elena Alexandra Marinescu
- Department of Plastic Surgery and reconstructive microsurgery, University of Medicine and Pharmacy of Craiova, Romania
| | - George-Alin Stoica
- Department of Pediatric Surgery, University of Medicine and Pharmacy of Craiova, Romania
| | - Maria Stoica
- Department of Intensive Care, University of Medicine and Pharmacy of Craiova, Romania
| | - Ana-Maria Ciurea
- Department of Oncology, University of Medicine and Pharmacy of Craiova, Romania
| | - Marius-Eugen Ciurea
- Department of Plastic Surgery and reconstructive microsurgery, University of Medicine and Pharmacy of Craiova, Romania
| |
Collapse
|
3
|
Lakshika Hettiarachchi I, Wu F, Stoica M, Li X, Zhu J. Potassium carbonate-mediated β-selective anomeric O-alkylation with primary electrophiles: Application to the synthesis of glycosphingolipids. Tetrahedron Lett 2023; 122:154511. [PMID: 37334260 PMCID: PMC10270675 DOI: 10.1016/j.tetlet.2023.154511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
Stereoselective construction of a variety of β-glycosides can be achieved using abundant and inexpensive K2CO3-mediated stereoselective anomeric O-alkylation of sugar lactols with primary electrophiles. In addition, application of this methodology to the synthesis of various azido-modified glycosphingolipids has been accomplished in good yields and excellent anomeric selectivity using sphingosine-derived primary triflate.
Collapse
Affiliation(s)
- Ishani Lakshika Hettiarachchi
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Fenglang Wu
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Maria Stoica
- Department of Natural Sciences, University of Michigan-Dearborn, 4901 Evergreen Road, Dearborn, Michigan 48128, United States
| | - Xiaohua Li
- Department of Natural Sciences, University of Michigan-Dearborn, 4901 Evergreen Road, Dearborn, Michigan 48128, United States
| | - Jianglong Zhu
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| |
Collapse
|
4
|
Camen IV, Istrate-Ofiţeru AM, Novac LV, Manolea MM, Dijmărescu AL, Neamţu SD, Radu L, Şerbănescu MS, Stoica M, Motoc AGM, Novac MB, Bujorescu DL, Novac MB, Bujorescu DL. Analysis of the relationship between placental histopathological aspects of preterm and term birth. Rom J Morphol Embryol 2022; 63:357-367. [PMID: 36374141 PMCID: PMC9801675 DOI: 10.47162/rjme.63.2.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVES This study aims to establish a correlation between placental histopathological and immunohistochemical (IHC) changes and preterm birth with fetal growth restriction (FGR, formerly called intrauterine growth restriction - IUGR). PATIENTS, MATERIALS, AND METHODS This prospective study was performed on a group of 30 parturients, with singleton gestation, of which 15 patients gave birth at term, and the other 15 patients gave birth prematurely. After the statistical correlation of the clinical and demographic data with premature birth (PB) and term birth (TB), we performed histological and IHC research on the respective placentae. To observe normal and pathological microscopic placental structures, we used the Hematoxylin-Eosin (HE) and Periodic Acid Schiff-Hematoxylin (PAS-H) classical stainings, but also special immunostaining with anti-cluster of differentiation 34 (CD34) and anti-vascular endothelial growth factor (VEGF) antibodies. RESULTS We found a statistically significant difference between the TB∕PB categories and the age of the patients, their antepartum weight, the weight of the newborns, and the placenta according to the sex of the newborn. Histological analysis revealed in the case of TB, small areas of perivillous amyloid deposition, with the significant extension of these areas both intravillous and perivillous in the case of PB. Massive intravillous calcifications, syncytial knots, and intravillous vascular thrombosis were also frequently present in PB. With PAS-H staining were highlighted the intra∕extravillous vascular basement membranes, but especially the massive fibrin deposits rich in glycosaminoglycans. By the IHC technique with the anti-CD34 antibody, we noticed the numerical vascular density, higher in the case of TB, but in the case of PB, there were large areas of placental infarction, with a lack of immunostaining in these areas. Through the anti-VEGF antibody, we observed the presence of signal proteins that determined and stimulated the formation of neoformation vessels in the areas affected by the lack of post-infarction placental vascularization. We observed a highly significant difference between placental vascular density between TB∕PB and newborn weight, sex, or placental weight. CONCLUSIONS Any direct proportional link between the clinical maternal-fetal and histological elements yet studied must be considered. Thus, establishing an antepartum risk group can prevent a poor pregnancy outcome.
Collapse
Affiliation(s)
- Ioana Victoria Camen
- Department of Histology, Department of Anesthesiology and Intensive Care, University of Medicine and Pharmacy of Craiova, Romania; ;
| | - Anca-Maria Istrate-Ofiţeru
- Department of Histology, University of Medicine and Pharmacy of Craiova, Romania,Research Center for Microscopic Morphology and Immunology, University of Medicine and Pharmacy of Craiova, Romania,Department of Obstetrics and Gynecology, Emergency County Hospital, Craiova, Romania
| | - Liliana Victoria Novac
- Department of Obstetrics and Gynecology, University of Medicine and Pharmacy of Craiova, Romania
| | - Maria Magdalena Manolea
- Department of Obstetrics and Gynecology, University of Medicine and Pharmacy of Craiova, Romania
| | - Anda Lorena Dijmărescu
- Department of Obstetrics and Gynecology, University of Medicine and Pharmacy of Craiova, Romania
| | - Simona Daniela Neamţu
- Department of Hematology and Immunology, University of Medicine and Pharmacy of Craiova, Romania
| | - Lucreţiu Radu
- Department of Hygiene, University of Medicine and Pharmacy of Craiova, Romania
| | - Mircea-Sebastian Şerbănescu
- Department of Medical Informatics and Biostatistics, University of Medicine and Pharmacy of Craiova, Romania
| | - Maria Stoica
- Department of Anesthesiology and Intensive Care, University of Medicine and Pharmacy of Craiova, Romania
| | | | - Marius Bogdan Novac
- Department of Anesthesiology and Intensive Care, University of Medicine and Pharmacy of Craiova, Romania
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Gil Y, Garijo D, Khider D, Knoblock CA, Ratnakar V, Osorio M, Vargas H, Pham M, Pujara J, Shbita B, Vu B, Chiang YY, Feldman D, Lin Y, Song H, Kumar V, Khandelwal A, Steinbach M, Tayal K, Xu S, Pierce SA, Pearson L, Hardesty-Lewis D, Deelman E, Silva RFD, Mayani R, Kemanian AR, Shi Y, Leonard L, Peckham S, Stoica M, Cobourn K, Zhang Z, Duffy C, Shu L. Artificial Intelligence for Modeling Complex Systems: Taming the Complexity of Expert Models to Improve Decision Making. ACM T INTERACT INTEL 2021. [DOI: 10.1145/3453172] [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] [Indexed: 10/20/2022]
Abstract
Major societal and environmental challenges involve complex systems that have diverse multi-scale interacting processes. Consider, for example, how droughts and water reserves affect crop production and how agriculture and industrial needs affect water quality and availability. Preventive measures, such as delaying planting dates and adopting new agricultural practices in response to changing weather patterns, can reduce the damage caused by natural processes. Understanding how these natural and human processes affect one another allows forecasting the effects of undesirable situations and study interventions to take preventive measures. For many of these processes, there are expert models that incorporate state-of-the-art theories and knowledge to quantify a system's response to a diversity of conditions. A major challenge for efficient modeling is the diversity of modeling approaches across disciplines and the wide variety of data sources available only in formats that require complex conversions. Using expert models for particular problems requires integration of models with third-party data as well as integration of models across disciplines. Modelers face significant heterogeneity that requires resolving semantic, spatiotemporal, and execution mismatches, which are largely done by hand today and may take more than 2 years of effort.
We are developing a modeling framework that uses artificial intelligence (AI) techniques to reduce modeling effort while ensuring utility for decision making. Our work to date makes several innovative contributions: (1) an intelligent user interface that guides analysts to frame their modeling problem and assists them by suggesting relevant choices and automating steps along the way; (2) semantic metadata for models, including their modeling variables and constraints, that ensures model relevance and proper use for a given decision-making problem; and (3) semantic representations of datasets in terms of modeling variables that enable automated data selection and data transformations. This framework is implemented in the MINT (Model INTegration) framework, and currently includes data and models to analyze the interactions between natural and human systems involving climate, water availability, agricultural production, and markets. Our work to date demonstrates the utility of AI techniques to accelerate modeling to support decision-making and uncovers several challenging directions for future work.
Collapse
Affiliation(s)
- Yolanda Gil
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Daniel Garijo
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Deborah Khider
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Craig A. Knoblock
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Varun Ratnakar
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Maximiliano Osorio
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Hernán Vargas
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Minh Pham
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Jay Pujara
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Basel Shbita
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Binh Vu
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Yao-Yi Chiang
- Spatial Sciences Institute, University of Southern California, Los Angeles, CA 90089
| | - Dan Feldman
- Spatial Sciences Institute, University of Southern California, Los Angeles, CA 90089
| | - Yijun Lin
- Spatial Sciences Institute, University of Southern California, Los Angeles, CA 90089
| | - Hayley Song
- Spatial Sciences Institute, University of Southern California, Los Angeles, CA 90089
| | - Vipin Kumar
- Department of Computer Science, University of Minnesota, Minneapolis, MN 55455
| | - Ankush Khandelwal
- Department of Computer Science, University of Minnesota, Minneapolis, MN 55455
| | - Michael Steinbach
- Department of Computer Science, University of Minnesota, Minneapolis, MN 55455
| | - Kshitij Tayal
- Department of Computer Science, University of Minnesota, Minneapolis, MN 55455
| | - Shaoming Xu
- Department of Computer Science, University of Minnesota, Minneapolis, MN 55455
| | - Suzanne A. Pierce
- Texas Advanced Computing Center, University of Texas at Austin, Austin, TX 78758
| | - Lissa Pearson
- Texas Advanced Computing Center, University of Texas at Austin, Austin, TX 78758
| | | | - Ewa Deelman
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | | | - Rajiv Mayani
- Information Sciences Institute, University of Southern California, Marina del Rey, CA 90292
| | - Armen R. Kemanian
- Department of Plant Science, The Pennsylvania State University, University Park, PA 16802
| | - Yuning Shi
- Department of Plant Science, The Pennsylvania State University, University Park, PA 16802
| | - Lorne Leonard
- Department of Plant Science, The Pennsylvania State University, University Park, PA 16802
| | - Scott Peckham
- Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO 80309
| | - Maria Stoica
- Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO 80309
| | - Kelly Cobourn
- Department of Forest Resources and Environmental Conservation, Virginia Tech, Blacksburg, VA 24061
| | - Zeya Zhang
- Department of Forest Resources and Environmental Conservation, Virginia Tech, Blacksburg, VA 24061
| | - Christopher Duffy
- Department of Civil Engineering, The Pennsylvania State University, University Park, PA 16802
| | - Lele Shu
- Department of Land, Air and Water Resources, University of California Davis, Davis, CA 95616
| |
Collapse
|
6
|
Boyer L, Philippe C, Covali-Noroc A, Dalloz MA, Rouvel-Tallec A, Maillard D, Stoica M, d'Ortho MP. OSA treatment with CPAP: Randomized crossover study comparing tolerance and efficacy with and without humidification by ThermoSmart. Clin Respir J 2019; 13:384-390. [PMID: 30938064 DOI: 10.1111/crj.13022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 02/21/2019] [Accepted: 03/14/2019] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Adherence to continuous positive airway pressure (CPAP) remains an issue, as adverse effects (AE) such as rhinitis, dry/congested nose, dry mouth or throat are commonly experienced. The aim of the study was to compare CPAP efficacy and tolerance in severe obstructive sleep apnea (OSA) patients with or without (w/o) heated humidification using the ThermoSmart system. METHODS Multicenter RCT study in which CPAP-naive patients with severe OSA and meeting one or more of the following criteria: >65 years, using >1 drying medication, previous nasal symptoms or nasal surgery, were included. Patients were randomized to CPAP w/o heated humidification for 1 month and then crossed-over to the other treatment arm for another month. Naso-pharyngeal symptoms, Quality of life (FOSQ-10), sleepiness (ESS) and CPAP compliance and efficacy data were collected. RESULTS Forty patients were enrolled: age 62 ± 9 years, diagnostic AHI 46.7 ± 15.3/hour. About 70% were using >1 drying medication, mainly antihypertensives. Both treatment modalities were found to normalize AHI and decrease sleepiness with no differences between 2 modes, compliance (4.63 ± 0.39 vs 4.70 ± 0.36 h/night) or leaks (32.4 ± 2.0 versus 31.1 ± 1.7l/min). With heated humidification, there was a significant decrease in nasal symptoms such as dry/congested nose. At the study end, 26 patients preferred ThermoSmart ON, 3 did not have preference and 11 preferred ThermoSmart OFF. CONCLUSION ThermoSmart helps to decrease nose and throat discomfort because of CPAP therapy, these effects did not translate to better compliance but patients had a preference for ThermoSmart.
Collapse
Affiliation(s)
- Laurent Boyer
- APHP, Hôpital Henri Mondor, Département de Physiologie-Explorations Fonctionnelles, DHU A-TVB, Créteil, France
| | - Carole Philippe
- Centre des pathologies du sommeil, Hôpital Universitaire de la Pitié Salpêtrière, AP-HP, Paris, France
| | - Ala Covali-Noroc
- APHP, Hôpital Henri Mondor, Département de Physiologie-Explorations Fonctionnelles, DHU A-TVB, Créteil, France
| | - Marie-Amélie Dalloz
- Centre du sommeil, Hôpital Universitaire Bichat-Claude Bernard, DHU FIRE, AP-HP, Paris, France.,Université Denis Diderot, UFR de médecine, Paris, France
| | - Anny Rouvel-Tallec
- Centre du sommeil, Hôpital Universitaire Bichat-Claude Bernard, DHU FIRE, AP-HP, Paris, France
| | - Dominique Maillard
- Service de Physiologie - Explorations Fonctionnelles, Hôpital Universitaire Louis Mourier, AP-HP, Colombes, France.,Université Denis Diderot, UFR de médecine, Paris, France
| | - Maria Stoica
- Centre du sommeil, Hôpital Universitaire Bichat-Claude Bernard, DHU FIRE, AP-HP, Paris, France
| | - Marie-Pia d'Ortho
- Centre du sommeil, Hôpital Universitaire Bichat-Claude Bernard, DHU FIRE, AP-HP, Paris, France.,Université Denis Diderot, UFR de médecine, Paris, France
| |
Collapse
|
7
|
Trăilescu MD, Pavel AI, Pop MA, Zurbău-Anghel N, Stoica GA, Fruntelată RF, Singer CE, Stoica M, Constantin C. Pathological fractures of humerus in children. Therapeutic and pathological considerations. Rom J Morphol Embryol 2019; 60:831-840. [PMID: 31912093] [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: 06/10/2023]
Abstract
INTRODUCTION A pathological fracture appears after a low-energy trauma or minor trauma on bones with a modified histological structure; sometimes, the patient reports shoulder pain antedating the fracture. The most common benign bone tumors that cause pathological fractures in children are simple bone cysts, aneurysmal bone cysts, non-ossifying fibromas and fibrous dysplasia. This type of bone tumors is usually asymptomatic until they reach a large size and cause a pathological fracture after minor trauma. The optimal treatment remains controversial. Our objective was to describe our modern treatment strategies of the large benign osseous tumors of the humerus complicated by pathological humerus fractures and histological aspects in these cases. PATIENTS, MATERIALS AND METHODS The study was prospective and included patients who were diagnosed with pathological humeral fractures, which required surgically orthopedic treatment. We selected three cases of pathological fractures of humerus in children each with its particularities, treated in the Department of Pediatric Surgery and Orthopedics, Emergency County Hospital, Arad, Romania. Treatment included curettage of the cyst, sampling for histopathological (HP) examination, bone substitution and titanium elastic nails (TEN) osteosynthesis. RESULTS No complications and no recurrence were seen in the early postoperative period. CONCLUSIONS Osteosynthesis with TEN and bone substitution is a viable option for treatment of pathological fracture of humerus, secondary to the osseous benign tumors, which required surgically treatment, despite the different HP aspects. By using a combined treatment in these cases, we eliminate the disadvantages of isolated use of the described techniques in the literature.
Collapse
Affiliation(s)
- Maria Daniela Trăilescu
- Department of Anesthesia and Intensive Care, Department of Pediatrics, University of Medicine and Pharmacy of Craiova, Romania; ,
| | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Sarac B, Gammer C, Deng L, Park E, Yokoyama Y, Stoica M, Eckert J. Elastostatic reversibility in thermally formed bulk metallic glasses: nanobeam diffraction fluctuation electron microscopy. Nanoscale 2018; 10:1081-1089. [PMID: 29271462 DOI: 10.1039/c7nr06891c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The unparalleled shaping ability of bulk metallic glasses can revolutionize commercial products having multi-length scale features with a processing time of several minutes. Despite the widespread shaping ability of these polymer-like multicomponent alloys, thermoplastic forming (TPF) can severely degrade the intrinsic properties, particularly when complex stress states are activated. The present work emphasizes the importance of elastostatic loading (ESL) which not only fully reverses deteriorated room temperature plasticity originating under TPF or post-cryostatic conditions, but also activates a rejuvenation mechanism by rendering an extended resistance against strain softening. Furthermore, the reduction in the supercooled liquid region and crystallization enthalpy measured by differential scanning calorimetry are found to be temporary, and can be fully reversed to the initial condition. HRTEM imaging of the samples are performed with an imaging spherical aberration corrector. Individual nanobeam diffraction patterns obtained by the fluctuation electron microscopy (FEM) measurements are acquired using a scanning transmission electron microscope with a probe size of 1.2 nm from a 10 × 10 raster, yielding 100 diffraction patterns. The normalized variance of a series of nanodiffraction patterns of the post-elastostatically loaded sample reveals a height decrease in the first broad peak of normalized intensity variance V(k) suggesting modifications in the medium-range structural order which in turn dramatically restores the mechanical and thermal properties. Overall, the combination of TPF and post-ESL treatment in advanced glassy metals can open a new avenue for ultra-high mechanical and thermal performance micro- and nanomechanical devices for biosensors, MOSFETs and robotics.
Collapse
Affiliation(s)
- B Sarac
- Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, 8700, Austria.
| | | | | | | | | | | | | |
Collapse
|
9
|
Şopu D, Stukowski A, Stoica M, Scudino S. Atomic-Level Processes of Shear Band Nucleation in Metallic Glasses. Phys Rev Lett 2017; 119:195503. [PMID: 29219492 DOI: 10.1103/physrevlett.119.195503] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Indexed: 06/07/2023]
Abstract
The ability to control the plastic deformation of amorphous metals is based on the capacity to influence the percolation of the shear transformation zones (STZs). Despite the recent research progress, the mechanism of STZ self-assembly has so far remained elusive. Here, we identify the structural perturbation generated by an STZ in the surrounding material and show how such a perturbation triggers the activation of the neighboring STZ. The mechanism is based on the autocatalytic generation of successive strong strain and rotation fields, leading to STZ percolation and, ultimately, to the formation of a shear band.
Collapse
Affiliation(s)
- D Şopu
- Institute for Complex Materials, IFW Dresden, Helmholtzstraße 20, D-01069 Dresden, Germany
| | - A Stukowski
- Institut für Materialwissenschaft, Technische Universität Darmstadt, Otto-Berndt-Strasse 3, D-64287 Darmstadt, Germany
| | - M Stoica
- Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
| | - S Scudino
- Institute for Complex Materials, IFW Dresden, Helmholtzstraße 20, D-01069 Dresden, Germany
| |
Collapse
|
10
|
Nilius G, Domanski U, Schroeder M, Franke KJ, Hogrebe A, Margarit L, Stoica M, d'Ortho MP. A randomized controlled trial to validate the Alice PDX ambulatory device. Nat Sci Sleep 2017; 9:171-180. [PMID: 28652835 PMCID: PMC5476768 DOI: 10.2147/nss.s133789] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Obstructive sleep apnea (OSA) is a highly prevalent condition; however, the majority of patients remain undiagnosed. There is a potential to expand the diagnostic capacity of sleep laboratories. The study objective was to validate a portable respiratory monitoring device (Alice PDX) against polysomnography (PSG) in the laboratory and to assess its reliability at home. METHODS A total of 85 patients with suspected OSA (80% male, mean age 49.1±13.5 years, body mass index 29.7±6.9 kg/m2, Epworth Sleepiness Scale 10.0±5.1) were randomized to 3 diagnostic nights: 1 night simultaneous in-laboratory PSG and PDX recording; 1 night self-applied PDX at home, and 1 night in-laboratory PSG. Study data were manually scored according to American Academy of Sleep Medicine criteria. RESULTS The Alice PDX was in diagnostic agreement with simultaneously recorded reference PSG in 96.4% of studies. In 2.4% of studies the in-laboratory PDX underestimated and in 1.2% of studies it overestimated the apnea hypopnea index (AHI). The difference between the AHI from the reference PSG and the home study was similar to the difference between the PSGs (2.79 vs 0.79, p=0.08). CONCLUSION In a population with a high suspicion of OSA, the Alice PDX showed a high level of diagnostic agreement with a simultaneous PSG and performed valid home diagnostic studies for OSA. If manually scored, the portable device can be used by sleep specialists for diagnosing moderate-to-severe obstructive sleep apnea in cases with a high pretest probability for the disease over a wide range of disease severity. The technology can be deployed reliably outside of the sleep laboratory setting.
Collapse
Affiliation(s)
- Georg Nilius
- HELIOS-Klinik Ambrock, Universität Witten-Herdecke, Hagen, Germany
| | - Ulrike Domanski
- HELIOS-Klinik Ambrock, Universität Witten-Herdecke, Hagen, Germany
| | - Maik Schroeder
- HELIOS-Klinik Ambrock, Universität Witten-Herdecke, Hagen, Germany
| | | | - Anke Hogrebe
- HELIOS-Klinik Ambrock, Universität Witten-Herdecke, Hagen, Germany
| | - Laurent Margarit
- Service de Physiologie - Explorations Fonctionnelles DHU FIRE, Groupe Hospitalier Bichat-Claude Bernard, Assistance Publique-Hopitaux de Paris
| | - Maria Stoica
- Service de Physiologie - Explorations Fonctionnelles DHU FIRE, Groupe Hospitalier Bichat-Claude Bernard, Assistance Publique-Hopitaux de Paris
| | - Marie-Pia d'Ortho
- Service de Physiologie - Explorations Fonctionnelles DHU FIRE, Groupe Hospitalier Bichat-Claude Bernard, Assistance Publique-Hopitaux de Paris.,Université Denis Diderot Paris 7, Paris, France
| |
Collapse
|
11
|
Wanono R, Frija-Masson J, Benzaquen H, Stoica M, Rouvel-Tallec A, D’Ortho M. Parasomnies de l’adulte associées au syndrome d’apnée du sommeil. Rev Mal Respir 2017. [DOI: 10.1016/j.rmr.2016.10.716] [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: 11/26/2022]
|
12
|
Abstract
When reducing the size of metallic glass samples down to the nanoscale regime, experimental studies on the plasticity under uniaxial tension show a wide range of failure modes ranging from brittle to ductile ones. Simulations on the deformation behavior of nanoscaled metallic glasses report an unusual extended strain softening and are not able to reproduce the brittle-like fracture deformation as found in experiments. Using large-scale molecular dynamics simulations we provide an atomistic understanding of the deformation mechanisms of metallic glass nanowires and differentiate the extrinsic size effects and aspect ratio contribution to plasticity. A model for predicting the critical nanowire aspect ratio for the ductile-to-brittle transition is developed. Furthermore, the structure of brittle nanowires can be tuned to a softer phase characterized by a defective short-range order and an excess free volume upon systematic structural rejuvenation, leading to enhanced tensile ductility. The presented results shed light on the fundamental deformation mechanisms of nanoscaled metallic glasses and demarcate ductile and catastrophic failure.
Collapse
Affiliation(s)
- D Şopu
- IFW Dresden, Institut für Komplexe Materialien, Helmholtzstraße 20, D-01069 Dresden, Germany
| | - A Foroughi
- IFW Dresden, Institut für Komplexe Materialien, Helmholtzstraße 20, D-01069 Dresden, Germany
| | - M Stoica
- IFW Dresden, Institut für Komplexe Materialien, Helmholtzstraße 20, D-01069 Dresden, Germany
- Politehnica University of Timisoara , P-ta Victoriei 2, RO-300006 Timisoara, Romania
| | - J Eckert
- Erich Schmid Institute of Materials Science, Austrian Academy of Sciences , Jahnstrasse 12, A-8700 Leoben, Austria
- Department Materials Physics, Mountanuniversität Leoben , Jahnstrasse 12, A-8700 Leoben, Austria
| |
Collapse
|
13
|
Nicoara M, Raduta A, Parthiban R, Locovei C, Eckert J, Stoica M. Low Young's modulus Ti-based porous bulk glassy alloy without cytotoxic elements. Acta Biomater 2016; 36:323-31. [PMID: 26979480 DOI: 10.1016/j.actbio.2016.03.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 02/12/2016] [Accepted: 03/11/2016] [Indexed: 01/06/2023]
Abstract
UNLABELLED A new a biocompatible Ti42Zr40Ta3Si15 (atomic %) porous bulk glassy alloy was produced by combination of rapid solidification and powder metallurgy techniques. Amorphous alloy ribbons were fabricated by melt spinning, i.e. extremely fast quenching the molten alloy with 10(6)K/s from T=1973K down to room temperature. The ribbons were then cryo-milled at liquid nitrogen temperature in order to produce powder, which was subsequently hot pressed. The resulting thick pellets have a porosity of about 14vol%, a high compression strength of 337MPa and a Young's modulus of about E=52GPa, values very close to those characteristic of cortical bone. Moreover, the morphology of the samples is very similar to that of cortical bone. The biocompatibility, which is due to the absence of any toxic element in the chemical composition, together with the suitable mechanical behavior, make these samples promising for orthopedic and dentistry applications. STATEMENT OF SIGNIFICANCE Ti-based alloys are nowadays the standard solution for biomedical implants. However, both the conventional crystalline and amorphous alloys have higher rigidity as the human bone, leading to the damage of the bone at the interface, and contains harmful elements like vanadium, aluminum, nickel or beryllium. The hierarchical porous structures based on glassy alloys with biocompatible elements is a much better alternative. This work presents for the first time the manufacturing of such porous bodies starting from Ti-based amorphous alloy ribbons, which contains only non-harmful elements. The morphology and the compressive mechanical properties of these new products are analyzed in regard with those characteristic to the cortical bone.
Collapse
|
14
|
Taillé C, Rouvel-Tallec A, Stoica M, Danel C, Dehoux M, Marin-Esteban V, Pretolani M, Aubier M, d’Ortho MP. Obstructive Sleep Apnoea Modulates Airway Inflammation and Remodelling in Severe Asthma. PLoS One 2016; 11:e0150042. [PMID: 26934051 PMCID: PMC4774979 DOI: 10.1371/journal.pone.0150042] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 02/08/2016] [Indexed: 11/19/2022] Open
Abstract
Background Obstructive sleep apnoea (OSA) is frequently observed in severe asthma but the causal link between the 2 diseases remains hypothetical. The role of OSA-related systemic and airway neutrophilic inflammation in asthma bronchial inflammation or remodelling has been rarely investigated. The aim of this study was to compare hallmarks of inflammation in induced sputum and features of airway remodelling in bronchial biopsies from adult patients with severe asthma with and without OSA. Materials and Methods An overnight polygraphy was performed in 55 patients referred for difficult-to-treat asthma, who complained of nocturnal respiratory symptoms, poor sleep quality or fatigue. We compared sputum analysis, reticular basement membrane (RBM) thickness, smooth muscle area, vascular density and inflammatory cell infiltration in bronchial biopsies. Results In total, 27/55 patients (49%) had OSA diagnosed by overnight polygraphy. Despite a moderate increase in apnoea-hypopnoea index (AHI; 14.2±1.6 event/h [5–35]), the proportion of sputum neutrophils was higher and that of macrophages lower in OSA than non-OSA patients, with higher levels of interleukin 8 and matrix metalloproteinase 9. The RBM was significantly thinner in OSA than non-OSA patients (5.8±0.4 vs. 7.8±0.4 μm, p<0.05). RBM thickness and OSA severity assessed by the AHI were negatively correlated (rho = -0.65, p<0.05). OSA and non-OSA patients did not differ in age, sex, BMI, lung function, asthma control findings or treatment. Conclusion Mild OSA in patients with severe asthma is associated with increased proportion of neutrophils in sputum and changes in airway remodelling.
Collapse
Affiliation(s)
- Camille Taillé
- Service de Pneumologie A et Centre de Compétence des Maladies Pulmonaires Rares, Hôpital Bichat, Assistance Publique-Hôpitaux de Paris, Paris, France
- Faculté de Médecine, Université Paris Diderot, Paris, France
- Inserm UMR 1152, Paris, France
- Département Hospitalo-Universitaire FIRE, Paris, France
- Laboratoire d’Excellence INFLAMEX, Paris, France
- * E-mail:
| | - Anny Rouvel-Tallec
- Centre du Sommeil, Service de Physiologie–Explorations Fonctionnelles, Hôpital Bichat, Assistance Publique-Hôpitaux de Paris, Paris, France
- Faculté de Médecine, Université Paris Diderot, Paris, France
- Inserm UMR 1152, Paris, France
- Département Hospitalo-Universitaire FIRE, Paris, France
| | - Maria Stoica
- Centre du Sommeil, Service de Physiologie–Explorations Fonctionnelles, Hôpital Bichat, Assistance Publique-Hôpitaux de Paris, Paris, France
- Faculté de Médecine, Université Paris Diderot, Paris, France
- Inserm UMR 1152, Paris, France
- Département Hospitalo-Universitaire FIRE, Paris, France
| | - Claire Danel
- Laboratoire d’Anatomie et Cytologie Pathologiques Hôpital Bichat, Assistance Publique-Hôpitaux de Paris, Paris, France
- Faculté de Médecine, Université Paris Diderot, Paris, France
- Inserm UMR 1152, Paris, France
- Département Hospitalo-Universitaire FIRE, Paris, France
- Laboratoire d’Excellence INFLAMEX, Paris, France
| | - Monique Dehoux
- Laboratoire de Biochimie, Hôpital Bichat-Claude Bernard Hôpital Bichat, Assistance Publique-Hôpitaux de Paris, Paris, France
- Faculté de Médecine, Université Paris Diderot, Paris, France
- Inserm UMR 1152, Paris, France
- Département Hospitalo-Universitaire FIRE, Paris, France
- Laboratoire d’Excellence INFLAMEX, Paris, France
| | - Viviana Marin-Esteban
- Inserm UMR-S 996, Faculté de Pharmacie, Université Paris sud, Châtenay-Malabry, France
| | - Marina Pretolani
- Faculté de Médecine, Université Paris Diderot, Paris, France
- Inserm UMR 1152, Paris, France
- Département Hospitalo-Universitaire FIRE, Paris, France
- Laboratoire d’Excellence INFLAMEX, Paris, France
| | - Michel Aubier
- Service de Pneumologie A et Centre de Compétence des Maladies Pulmonaires Rares, Hôpital Bichat, Assistance Publique-Hôpitaux de Paris, Paris, France
- Faculté de Médecine, Université Paris Diderot, Paris, France
- Inserm UMR 1152, Paris, France
- Département Hospitalo-Universitaire FIRE, Paris, France
- Laboratoire d’Excellence INFLAMEX, Paris, France
| | - Marie-Pia d’Ortho
- Centre du Sommeil, Service de Physiologie–Explorations Fonctionnelles, Hôpital Bichat, Assistance Publique-Hôpitaux de Paris, Paris, France
- Faculté de Médecine, Université Paris Diderot, Paris, France
- Inserm UMR 1152, Paris, France
- Département Hospitalo-Universitaire FIRE, Paris, France
| |
Collapse
|
15
|
D’Ortho M, Boyer L, Noroc A, Philippe C, Maillard D, Dalloz M, Rouvel-Tallec A, Stoica M. Étude randomisée en cross-over comparant la tolérance et l’efficacité de la PPC sans ou avec humidification par Thermosmart™. Rev Mal Respir 2016. [DOI: 10.1016/j.rmr.2015.10.599] [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: 10/22/2022]
|
16
|
Georgescu C, Margaritescu C, Osman I, Stoica M, Mitroi M, Surlin V. Therapeutic management of massive subcutaneous emphysema, bilateral pneumothorax and pneumomediastinum after anterior cordectomy for in situ vocal cord carcinoma - case report. Chirurgia (Bucur) 2014; 109:822-826. [PMID: 25560507] [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: 12/01/2014] [Indexed: 06/04/2023]
Abstract
We present the case of a 70 year-old smoker patient, who was admitted in hospital for removal of a tumour located on the left vocal cord. After direct suspension laryngoscopy (with tumorbiopsy sampling), preliminary histopathological exam revealed an in situ carcinoma. At 2 weeks after histopathological confirmation, the left vocal cord was removed by anterior approach, under general anesthesia. In the first 24 hours after surgery, the patient presented an ischaemic stroke, with a deep coma and left hemiplegia, which necessitated mechanical ventilation and specific neurological treatment. Under mechanical ventilation, the patient developed massive subcutaneous emphysema, bilateral pneumothorax and pneumomediastinum,which required tracheostomy and bilateralpleural drainage, in order to limit suddenly installed respiratory insufficiency. After an 18-day interval of intensive care therapy,the patient was released at home, considered to be surgically cured and had a moderate remaining left brachial monoplegia,which was almost totally cured in the next six months.
Collapse
|
17
|
Stoica GA, Stepan AE, Maloş A, Popa A, Georgescu CC, Stoica M, Cristian D, Şurlin V, Cernea D. Gastrointestinal stromal tumor, jejunal atresia and stenosis in a neonate. Rom J Morphol Embryol 2014; 55:1253-1257. [PMID: 25607416] [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: 06/04/2023]
Abstract
Gastrointestinal stromal tumors could rise in different areas of the digestive tract, at any age, but very rarely in neonates. We present the case of a 5-day-old male, with intestinal stenosis and atresia (type II) operated for peritonitis. On the resected specimen, the histopathological examination revealed a small gastrointestinal tumor of 8 mm. The immunohistochemical analysis indicated a low malignant potential. He is currently at two years of oncologic follow-up with no evidence of disease.
Collapse
Affiliation(s)
- George Alin Stoica
- Department of Pediatric Surgery, Emergency County Hospital of Craiova, University of Medicine and Pharmacy of Craiova, Romania;
| | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Oteng-Pabi SK, Pardin C, Stoica M, Keillor JW. Site-specific protein labelling and immobilization mediated by microbial transglutaminase. Chem Commun (Camb) 2014; 50:6604-6. [DOI: 10.1039/c4cc00994k] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Microbial transglutaminase (mTG) mediates site-specific propargylation of target proteins, allowing their subsequent modification in in vitro bio-conjugation applications.
Collapse
Affiliation(s)
| | | | - Maria Stoica
- Department of Chemistry
- University of Ottawa
- Ottawa, Canada K1N 6N5
| | | |
Collapse
|
19
|
Mihai A, Duric P, Pirlog M, Stoica M, Sfetcu R, Chihai J, Boderscova L, Skendi V, Hranvov G. EPA-1268 – Mental health disorders in emergency departments of general hospital in east european countries. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)78501-3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
20
|
Tănase AD, Coliţă A, Mărculescu A, Berteanu C, Streinu Cercel A, Stoica M, Stoica A, Cernea D, Copotoiu S, Brînzaniuc K, Azamfirei L. Using the galactomannan antigen assay in the diagnosis of invasive aspergillosis after hematopoietic stem cell transplantation. Rom J Morphol Embryol 2012; 53:379-382. [PMID: 22732810] [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: 06/01/2023]
Abstract
Invasive aspergillosis (IA) is the most common life-threatening infections after hematopoietic stem cell transplant (HSCT). The serum galactomannan (GM) is recognized as an indirect mycological criteria for an early diagnosis of IA. Starting January 2011, we implementing in Fundeni Clinical Institute, Bucharest, for the first time in Romania, the detection of GM antigen (Platelia Aspergillus EIA, Bio-Rad). In 2011, patients undergoing HSCT were screened with the galactomannan ELISA; we performed a retrospective chart review of 162 SCT patients who underwent galactomannan testing. Thirteen of the patients (8.02%) had at least one positive galactomannan ELISA, and four had multiple positive tests. When calculated in reference to a proved or probable diagnosis of aspergillosis, the galactomannan ELISA had a sensitivity of 0.857 and a specificity of 0.913. The positive predictive value was 0.46, and the negative predictive value was 0.993. The Platelia Aspergillus galactomannan antigenemia assay may assist physicians in making an early diagnosis of IA, in correlation with clinical and radiological criteria. The test has a high sensitivity and specificity and a very good negative predictive value. We found the screening of GM ELISA to be a highly specific diagnostic tool in detecting IA manifested in patients undergoing HSCT.
Collapse
Affiliation(s)
- Alina Daniela Tănase
- Bone Marrow Transplantation Unit, Fundeni Clinical Institute, Bucharest, Romania.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Damy T, Paulino A, Margarit L, Drouot X, Stoica M, Vermes E, Gueret P, Adnot S, Rande JLD, D'Ortho MP, Hittinger L. Left ventricle remodelling is associated with sleep-disordered breathing in non-ischaemic cardiopathy with systolic dysfunction. J Sleep Res 2011; 20:101-9. [PMID: 20408922 DOI: 10.1111/j.1365-2869.2009.00817.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sleep-disordered breathing (SDB) is associated with left ventricle (LV) remodelling in patients with normal LV function. Sleep-disordered breathing is common in chronic heart failure (CHF) with systolic LV dysfunction, and may contribute to LV remodelling and CHF progression. Our aim was to determine the consequence of SDB on LV geometry in patients with CHF. We hypothesised that SDB severity was correlated with the degree of LV hypertrophy (LVH). One-hundred and sixty patients with CHF with a non-ischaemic systolic LV dysfunction were assessed by overnight polygraphy and echocardiography. Patients were classified in four groups according to their apnoea-hypopnoea index (AHI): <5 (no-SDB); 5-14 (mild); 15-29 (moderate); ≥30 (severe). Left ventricular mass index (LVM Ind) was calculated using the usual echocardiographic M-Mode parameters. Their mean age, New York Heart Association and left ventricular ejection fraction were, respectively: 56 ± 13 years, 2.4 ± 0.8 and 30 ± 10%, and 77% were men. Body mass index, interventricular septal and posterior LV wall thicknesses, and LVM Ind were significantly increased in severe SDB versus no-SDB. LVM Ind was correlated to the AHI (R = 0.27, P = 0.0006) and, using logistic regression, AHI was the unique independent factor of LVH in this population. In non-ischaemic CHF, SDB severity is associated with LV remodelling.
Collapse
Affiliation(s)
- Thibaud Damy
- Federation de Cardiologie, AP-HP, Groupe Henri-Mondor Albert-Chenevier, Créteil, France.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Niculescu D, Niculescu C, Stoica M, Stănescu L, Grecu D, Pleşea IE, Enache SD. The arthroscopy-histological criterion link in the result's estimation of the endoscopic treatment by resection of the knee's meniscus lesions. Rom J Morphol Embryol 2011; 52:617-624. [PMID: 21655652] [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: 05/30/2023]
Abstract
The authors present the results of a statistical, clinical, imaging X-ray and optical microscopic studies of some lesions of knee's meniscus, the arthroscopy allowing this structure's biopsy during the endoscopic procedures of resection. These histological criterions are very important estimation factors of long-term results of these techniques, often the microstructure looking different to the appearing normal macroscopic aspect.
Collapse
Affiliation(s)
- D Niculescu
- Department of Orthopedic Surgery, University of Medicine and Pharmacy of Craiova, Romania.
| | | | | | | | | | | | | |
Collapse
|
23
|
Kaban I, Jóvári P, Stoica M, Mattern N, Eckert J, Hoyer W, Beuneu B. On the atomic structure of Zr60Cu20Fe20 metallic glass. J Phys Condens Matter 2010; 22:404208. [PMID: 21386569 DOI: 10.1088/0953-8984/22/40/404208] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The structure of Zr(60)Cu(20)Fe(20) metallic glass has been studied with high-energy x-ray diffraction, neutron diffraction and extended x-ray absorption spectroscopy and modelled with the reverse Monte Carlo simulation technique. It is found that Cu and Fe atoms prefer Zr as a nearest neighbour. The mean interatomic distance between Cu/Fe and Zr atoms in the glass is remarkably shorter than the sum of the respective atomic radii. The coordination numbers for Cu/Fe-Cu/Fe pairs are very close to each other, suggesting a regular distribution of Cu and Fe atoms in the Zr(60)Cu(20)Fe(20) metallic glass.
Collapse
Affiliation(s)
- I Kaban
- IFW Dresden, Institute for Complex Materials, PO Box 270116, D-01171 Dresden, Germany.
| | | | | | | | | | | | | |
Collapse
|
24
|
Cernea D, Vlădoianu A, Stoica M, Novac M, Berteanu C. [Alternatives to allogenous blood transfusion]. Rev Med Chir Soc Med Nat Iasi 2009; 113:339-344. [PMID: 21495338] [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: 05/30/2023]
Abstract
Blood transfusion is usually meant to lower morbidity and mortality rates. Allogenous blood transfusion implies certain risks that can be avoided by autologous blood transfusions techniques including: preoperatory autologous blood donation, acute normovolemic hemodilution, intraoperatory and postoperatory blood salvage. Preoperatory blood donation and acute normovolemic hemodilution are used for planned interventions with an estimated blood loss higher than 20% of blood volume. These methods imply Erythropoietin and iron treatment. Intraoperatory and postoperatory blood salvage is performed by personnel trained in blood donation, handling and storage. Autologous blood transfusions are used for certain surgical procedures that commonly require transfusions: orthopedic surgery, radical prostatectomy, cardiovascular surgery, organ transplantation. An alternative to allogenous blood transfusion is the use of artificial oxygen transporters: human or animal hemoglobin solutions or pefluorocarbonate solutions. These solutions do not require cross reactions, do not carry diseases and are generally well tolerated and easily stored in the operating room, ambulance and other transport means. They have however a slight degree of toxicity.
Collapse
Affiliation(s)
- Daniela Cernea
- Disciplina de ATI, Facultatea de Medicină, Universitatea de Medicină si Farmacie Craiova
| | | | | | | | | |
Collapse
|
25
|
Li R, Stoica M, Eckert J. Effect of minor Cu addition on phase evolution and magnetic properties of {[(Fe0.5Co0.5)0.75Si0.05B0.20]0.96Nb0.04}100-xCuxalloys. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1742-6596/144/1/012042] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
26
|
Nikolowski K, Scudino S, Stoica M, Surreddi KB, Das J, Eckert J. Stress-induced martensitic transformation in a Ti45Zr38Al17cast rod. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1742-6596/144/1/012090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
27
|
|
28
|
Ursu I, Stoica M, Mihǎilescu I, Crǎciun D. Pulsed 10μm-laser interferometry of the early evolution stages of a laser-generated breakdown plasma in air in front of an aluminium target. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0020-0891(89)90003-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
29
|
Andrei V, Catea A, Abdulamit N, Comşa G, Stoica M. [Intra-labyrinthine footplate fragments. A complication in surgery for deafness]. Rev Chir Oncol Radiol O R L Oftalmol Stomatol Otorinolaringol 1987; 32:247-50. [PMID: 2964703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
30
|
Diculescu I, Stoica M. Fluorescence histochemical investigation on the adrenergic innervation of the white adipose tissue in the rat. J Neurovisc Relat 1970; 32:25-36. [PMID: 5485928 DOI: 10.1007/bf02324328] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
31
|
Diculescu I, Onicescu D, Guida I, Stoica M, Marin A. [Histochemical studies on the mast cell]. Ann Histochim 1967; 12:415-22. [PMID: 4388292] [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: 01/10/2023]
|