1
|
Guastamacchia MGR, Xue R, Madi K, Pitkeathly WTE, Lee PD, Webb SED, Cartmell SH, Dalgarno PA. Instantaneous 4D micro-particle image velocimetry (µPIV) via multifocal microscopy (MUM). Sci Rep 2022; 12:18458. [PMID: 36323775 PMCID: PMC9630545 DOI: 10.1038/s41598-022-22701-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 04/30/2022] [Accepted: 10/18/2022] [Indexed: 11/29/2022] Open
Abstract
Multifocal microscopy (MUM), a technique to capture multiple fields of view (FOVs) from distinct axial planes simultaneously and on one camera, was used to perform micro-particle image velocimetry (µPIV) to reconstruct velocity and shear stress fields imposed by a liquid flowing around a cell. A diffraction based multifocal relay was used to capture images from three different planes with 630 nm axial spacing from which the axial positions of the flow-tracing particles were calculated using the image sharpness metric. It was shown that MUM can achieve an accuracy on the calculated velocity of around (0.52 ± 0.19) µm/s. Using fixed cells, MUM imaged the flow perturbations at sub-cellular level, which showed characteristics similar to those observed in the literature. Using live cells as an exemplar, MUM observed the effect of changing cell morphology on the local flow during perfusion. Compared to standard confocal laser scanning microscope, MUM offers a clear advantage in acquisition speed for µPIV (over 300 times faster). This is an important characteristic for rapidly evolving biological systems where there is the necessity to monitor in real time entire volumes to correlate the sample responses to the external forces.
Collapse
Affiliation(s)
- M G R Guastamacchia
- EPSRC Centre for Doctoral Training in Applied Photonics, Heriot-Watt University, Edinburgh, UK.,Science and Technology Facilities Council, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell, UK.,Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, UK
| | - R Xue
- Department of Materials, School of Natural Sciences, Faculty of Science and Engineering, University of Manchester, Manchester, UK.,The Henry Royce Institute, Royce Hub Building, The University of Manchester, Manchester, UK
| | - K Madi
- Department of Materials, School of Natural Sciences, Faculty of Science and Engineering, University of Manchester, Manchester, UK.,3Dmagination Ltd, Atlas Building, Harwell Campus, Didcot, UK
| | - W T E Pitkeathly
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, UK
| | - P D Lee
- Department of Materials, School of Natural Sciences, Faculty of Science and Engineering, University of Manchester, Manchester, UK.,The Henry Royce Institute, Royce Hub Building, The University of Manchester, Manchester, UK
| | - S E D Webb
- Science and Technology Facilities Council, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell, UK.,Biotechnology and Biological Sciences Research Council, Swindon, UK
| | - S H Cartmell
- Department of Materials, School of Natural Sciences, Faculty of Science and Engineering, University of Manchester, Manchester, UK.,The Henry Royce Institute, Royce Hub Building, The University of Manchester, Manchester, UK
| | - P A Dalgarno
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, UK.
| |
Collapse
|
2
|
Bhartiya A, Madi K, Disney CM, Courtois L, Jupe A, Zhang F, Bodey AJ, Lee P, Rau C, Robinson IK, Yusuf M. Phase-contrast 3D tomography of HeLa cells grown in PLLA polymer electrospun scaffolds using synchrotron X-rays. J Synchrotron Radiat 2020; 27:158-163. [PMID: 31868748 DOI: 10.1107/s1600577519015583] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
Advanced imaging is useful for understanding the three-dimensional (3D) growth of cells. X-ray tomography serves as a powerful noninvasive, nondestructive technique that can fulfill these purposes by providing information about cell growth within 3D platforms. There are a limited number of studies taking advantage of synchrotron X-rays, which provides a large field of view and suitable resolution to image cells within specific biomaterials. In this study, X-ray synchrotron radiation microtomography at Diamond Light Source and advanced image processing were used to investigate cellular infiltration of HeLa cells within poly L-lactide (PLLA) scaffolds. This study demonstrates that synchrotron X-rays using phase contrast is a useful method to understand the 3D growth of cells in PLLA electrospun scaffolds. Two different fiber diameter (2 and 4 µm) scaffolds with different pore sizes, grown over 2, 5 and 8 days in vitro, were examined for infiltration and cell connectivity. After performing visualization by segmentation of the cells from the fibers, the results clearly show deeper cell growth and higher cellular interconnectivity in the 4 µm fiber diameter scaffold. This indicates the potential for using such 3D technology to study cell-scaffold interactions for future medical use.
Collapse
Affiliation(s)
- A Bhartiya
- London Centre for Nanotechnology, University College London, London WC1H 0AH, UK
| | - K Madi
- 3DMagination Ltd, Atlas Building, Fermi Avenue, Harwell, Didcot OX11 0QX, UK
| | - C M Disney
- School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester, UK
| | - L Courtois
- 3DMagination Ltd, Atlas Building, Fermi Avenue, Harwell, Didcot OX11 0QX, UK
| | - A Jupe
- Department of Applied Computing, The University of Buckingham, UK
| | - F Zhang
- London Centre for Nanotechnology, University College London, London WC1H 0AH, UK
| | - A J Bodey
- Diamond Light Source, Oxfordshire OX11 0DE, UK
| | - P Lee
- Mechanical Engineering, University College London, London WC1E 7JE, UK
| | - C Rau
- Diamond Light Source, Oxfordshire OX11 0DE, UK
| | - I K Robinson
- London Centre for Nanotechnology, University College London, London WC1H 0AH, UK
| | - M Yusuf
- London Centre for Nanotechnology, University College London, London WC1H 0AH, UK
| |
Collapse
|
3
|
Bredin S, Demay O, Mensa C, Madi K, Ohl X. Posterolateral fusion versus Dynesys dynamic stabilization: Retrospective study at a minimum 5.5years' follow-up. Orthop Traumatol Surg Res 2017; 103:1241-1244. [PMID: 28942026 DOI: 10.1016/j.otsr.2017.07.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 05/12/2017] [Accepted: 07/24/2017] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Lumbar fusion is one of the most widespread techniques to treat degenerative lumbar pathology. To prevent complications such as non-union or adjacent segment degeneration, dynamic stabilization techniques were developed, but with controversial results. The aim of the present study was to compare long-term radiologic and clinical results between fusion and dynamic stabilization. MATERIAL AND METHODS A single-center retrospective study included patients with recurrent lumbar discal hernia or lumbar canal stenosis managed by posterolateral fusion or by dynamic stabilization associated to neurologic release. Patients were seen in follow-up for radiological and clinical assessment: visual analog pain scale (VAS), Oswestry Disability Index (ODI), Short Form-12 (SF-12), adjacent segment disease (ASD), and intervertebral range of motion (ROM). RESULTS Fifty-eight patients were included: 25 in the fusion group (FG), and 33 in the Dynesys® group (DG). VAS scores were significantly lower in DG than FG. ODI was 14.6±2.8 in DG, versus 19.4±3.3 in FG (P=0.0001). SF-12 physical subscore was significantly higher in DG. ROM was 4.1±2° in DG, vs. 0.7±0.5° in FG (P=0.001). Radiologic ASD was significantly greater in FG than DG (36% vs. 12.1%; P=0.012), without difference in clinical expression (DG, 1 case; FG, 2 cases). CONCLUSION Dynamic stabilization provided clinical and radiological results comparable to those of posterolateral fusion in these indications (although level L5-S1 was not studied). LEVEL OF EVIDENCE IV.
Collapse
Affiliation(s)
- S Bredin
- Service de chirurgie orthopédique et traumatologie, CHU Maison-Blanche, 51100 Reims, France.
| | - O Demay
- Service de chirurgie orthopédique et traumatologie, CHU Maison-Blanche, 51100 Reims, France
| | - C Mensa
- Service de chirurgie orthopédique et traumatologie, CHU Maison-Blanche, 51100 Reims, France
| | - K Madi
- Service de chirurgie orthopédique et traumatologie, CHU Maison-Blanche, 51100 Reims, France
| | - X Ohl
- Service de chirurgie orthopédique et traumatologie, CHU Maison-Blanche, 51100 Reims, France
| |
Collapse
|
4
|
Disney CM, Madi K, Bodey AJ, Lee PD, Hoyland JA, Sherratt MJ. Visualising the 3D microstructure of stained and native intervertebral discs using X-ray microtomography. Sci Rep 2017; 7:16279. [PMID: 29176563 PMCID: PMC5701246 DOI: 10.1038/s41598-017-16354-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 11/10/2017] [Indexed: 01/31/2023] Open
Abstract
Intervertebral disc degeneration (IVDD) is linked to low back pain. Microstructural changes during degeneration have previously been imaged using 2D sectioning techniques and 3D methods which are limited to small specimens and prone to inducing artefacts from sample preparation. This study explores micro computed X-ray tomography (microCT) methods with the aim of resolving IVD 3D microstructure whilst minimising sample preparation artefacts. Low X-ray absorption contrast in non-mineralised tissue can be enhanced using staining and phase contrast techniques. A step-wise approach, including comparing three stains, was used to develop microCT for bovine tail IVD using laboratory and synchrotron sources. Staining successfully contrasted collagenous structures; however not all regions were stained and the procedure induced macroscopic structural changes. Phase contrast microCT of chemically fixed yet unstained samples resolved the nucleus pulposus, annulus fibrosus and constituent lamellae, and finer structures including collagen bundles and cross-bridges. Using the same imaging methods native tissue scans were of slightly lower contrast but free from sample processing artefacts. In the future these methods may be used to characterise structural remodelling in soft (non-calcified) tissues and to conduct in situ studies of native loaded tissues and constructs to characterise their 3D mechanical properties.
Collapse
Affiliation(s)
- C M Disney
- Centre for Doctoral Training in Regenerative Medicine, University of Manchester, Manchester, UK.,Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Manchester, UK
| | - K Madi
- School of Materials, University of Manchester, Manchester, UK
| | - A J Bodey
- Diamond Light Source, Harwell Science and Innovation Campus, Oxfordshire, UK
| | - P D Lee
- School of Materials, University of Manchester, Manchester, UK
| | - J A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Manchester, UK.,NIHR Manchester Biomedical Research Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - M J Sherratt
- Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Manchester, UK.
| |
Collapse
|
5
|
Heroual N, Azza F, Bouras S, Madi K, Houti L. Approche de mise en place d’une démarche d’évaluation de la qualité des soins dans un hôpital spécialisé en oncologie dans l’Ouest Algérien, Oran, Algérie. Rev Epidemiol Sante Publique 2016. [DOI: 10.1016/j.respe.2016.06.269] [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: 11/27/2022] Open
|
6
|
Staines KA, Madi K, Mirczuk SM, Parker S, Burleigh A, Poulet B, Hopkinson M, Bodey AJ, Fowkes RC, Farquharson C, Lee PD, Pitsillides AA. Endochondral Growth Defect and Deployment of Transient Chondrocyte Behaviors Underlie Osteoarthritis Onset in a Natural Murine Model. Arthritis Rheumatol 2016; 68:880-91. [PMID: 26605758 PMCID: PMC4832379 DOI: 10.1002/art.39508] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 11/05/2015] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To explore whether aberrant transient chondrocyte behaviors occur in the joints of STR/Ort mice (which spontaneously develop osteoarthritis [OA]) and whether they are attributable to an endochondral growth defect. METHODS Knee joints from STR/Ort mice with advanced OA and age-matched CBA (control) mice were examined by Affymetrix microarray profiling, multiplex polymerase chain reaction (PCR) analysis, and immunohistochemical labeling of endochondral markers, including sclerostin and MEPE. The endochondral phenotype of STR/Ort mice was analyzed by histologic examination, micro-computed tomography, and ex vivo organ culture. A novel protocol for quantifying bony bridges across the murine epiphysis (growth plate fusion) using synchrotron x-ray computed microtomography was developed and applied. RESULTS Meta-analysis of transcription profiles showed significant elevation in functions linked with endochondral ossification in STR/Ort mice (compared to CBA mice; P < 0.05). Consistent with this, immunolabeling revealed increased matrix metalloproteinase 13 (MMP-13) and type X collagen expression in STR/Ort mouse joints, and multiplex quantitative reverse transcriptase-PCR showed differential expression of known mineralization regulators, suggesting an inherent chondrocyte defect. Support for the notion of an endochondral defect included accelerated growth, increased zone of growth plate proliferative chondrocytes (P < 0.05), and widespread type X collagen/MMP-13 labeling beyond the expected hypertrophic zone distribution. OA development involved concomitant focal suppression of sclerostin/MEPE in STR/Ort mice. Our novel synchrotron radiation microtomography method showed increased numbers (P < 0.001) and mean areal growth plate bridge densities (P < 0.01) in young and aged STR/Ort mice compared to age-matched CBA mice. CONCLUSION Taken together, our data support the notion of an inherent endochondral defect that is linked to growth dynamics and subject to regulation by the MEPE/sclerostin axis and may represent an underlying mechanism of pathologic ossification in OA.
Collapse
Affiliation(s)
- K. A. Staines
- Royal Veterinary College, University of London, London, UK, and Roslin Institute and Royal (Dick) School of Veterinary StudiesUniversity of Edinburgh, Easter Bush, UK
| | - K. Madi
- Manchester X‐Ray Imaging Facility, University of Manchester, Manchester, UK
| | - S. M. Mirczuk
- Royal Veterinary College, University of London, London, UK;
| | - S. Parker
- Royal Veterinary College, University of London, London, UK;
| | - A. Burleigh
- Royal Veterinary College, University of London, London, UK;
| | - B. Poulet
- University College London Medical School, London, UK
| | - M. Hopkinson
- Royal Veterinary College, University of London, London, UK;
| | - A. J. Bodey
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, UK
| | - R. C. Fowkes
- Royal Veterinary College, University of London, London, UK;
| | - C. Farquharson
- Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, UK
| | - P. D. Lee
- Manchester X‐Ray Imaging Facility, University of Manchester, Manchester, UK
| | | |
Collapse
|
7
|
de Souza HS, Tortori CA, Lintomen L, Figueiredo RT, Bernardazzi C, Leng L, Bucala R, Madi K, Buongusto F, Elia CCS, Castelo-Branco MTL, Bozza MT. Macrophage migration inhibitory factor promotes eosinophil accumulation and tissue remodeling in eosinophilic esophagitis. Mucosal Immunol 2015; 8:1154-65. [PMID: 25712805 PMCID: PMC4540676 DOI: 10.1038/mi.2015.6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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: 05/20/2014] [Accepted: 01/02/2015] [Indexed: 02/04/2023]
Abstract
Macrophage migration inhibitory factor (MIF) is involved in eosinophil biology and in type 2 inflammation, contributing to allergic and helminthic diseases. We hypothesized that MIF participates in the pathogenesis of eosinophilic esophagitis (EoE), an allergic condition characterized by esophageal eosinophilic inflammation. MIF is highly expressed in esophageal mucosa of patients with EoE, compared with gastro-esophageal reflux disease and control patients, where it co-localizes predominantly with eosinophils. In vitro, recombinant MIF promotes human eosinophil chemotaxis, while MIF antagonist and CXCR4 antagonist, AMD3100, revert this effect. In a model of EoE induced by ovalbumin, Mif-deficient mice have reduced inflammation and collagen deposition compared with wild-type (WT) mice. Importantly, treatment of WT mice with anti-MIF or with AMD3100 during the challenge phase prevents accumulation of eosinophils and tissue remodeling. Conversely, recombinant MIF promoted tissue eosinophil inflammation in allergic mice. Together, these results implicate MIF in the pathogenesis of esophageal inflammation and suggest that targeting MIF might represent a novel therapy for EoE.
Collapse
Affiliation(s)
- H. S. de Souza
- Serviço de Gastroenterologia & Laboratório Multidisciplinar de Pesquisa, Department of Internal Medicine, Hospital Universitário, Universidade Federal do Rio de Janeiro, 21941-913,D'Or Institute for Research and Education (IDOR), 22281-100
| | - C. A. Tortori
- Serviço de Gastroenterologia & Laboratório Multidisciplinar de Pesquisa, Department of Internal Medicine, Hospital Universitário, Universidade Federal do Rio de Janeiro, 21941-913
| | - L. Lintomen
- Laboratório de Inflamação e Imunidade, Departamento de Imunologia, Instituto de Microbiologia, Universidade Federal do Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
| | - R. T. Figueiredo
- Instituto de Ciências Biomédicas, Pólo de Xerém, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - C. Bernardazzi
- Serviço de Gastroenterologia & Laboratório Multidisciplinar de Pesquisa, Department of Internal Medicine, Hospital Universitário, Universidade Federal do Rio de Janeiro, 21941-913
| | - L. Leng
- Department of Medicine/Rheumatology, Yale University School of Medicine, The Anlyan Center, S525, 300 Cedar Street, New Haven, CT 06520-8031, USA
| | - R. Bucala
- Department of Medicine/Rheumatology, Yale University School of Medicine, The Anlyan Center, S525, 300 Cedar Street, New Haven, CT 06520-8031, USA
| | - K. Madi
- Serviço de Gastroenterologia & Laboratório Multidisciplinar de Pesquisa, Department of Internal Medicine, Hospital Universitário, Universidade Federal do Rio de Janeiro, 21941-913
| | - F. Buongusto
- Serviço de Gastroenterologia & Laboratório Multidisciplinar de Pesquisa, Department of Internal Medicine, Hospital Universitário, Universidade Federal do Rio de Janeiro, 21941-913
| | - C. C. S. Elia
- Serviço de Gastroenterologia & Laboratório Multidisciplinar de Pesquisa, Department of Internal Medicine, Hospital Universitário, Universidade Federal do Rio de Janeiro, 21941-913,D'Or Institute for Research and Education (IDOR), 22281-100
| | - M. T. L. Castelo-Branco
- Laboratório de Imunologia Celular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, 21941-599, Rio de Janeiro, Brazil
| | - M. T. Bozza
- Laboratório de Inflamação e Imunidade, Departamento de Imunologia, Instituto de Microbiologia, Universidade Federal do Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
| |
Collapse
|
8
|
Girard V, Leroux B, Brun V, Bressy G, Sesmat H, Madi K. Post-traumatic lower cervical spine instability: arthrodesis clinical and radiological outcomes at 5 years. Orthop Traumatol Surg Res 2014; 100:385-8. [PMID: 24751460 DOI: 10.1016/j.otsr.2014.02.003] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 12/16/2013] [Accepted: 02/11/2014] [Indexed: 02/02/2023]
Abstract
BACKGROUND Anterior cervical fusion is widely used to treat spinal injuries. Radiological evidence of disc abnormalities may develop on either side of the fused segment, raising concern about the potential for inducing adjacent-segment disease. Here, we report the long-term clinical, functional, and radiological outcomes after anterior cervical fusion. HYPOTHESIS Anterior cervical fusion influences the development of adjacent-segment disease. MATERIALS AND METHODS In a retrospective study, 15 patients aged 17 to 50 years were re-evaluated more than 5 years after anterior spinal fusion to treat post-traumatic cervical-spine instability. We used the Neck Disability Index (NDI) to assess function. Static and dynamic radiographs of the cervical spine were obtained. RESULTS NDI values indicated good clinical and functional outcomes, and fusion was achieved consistently. Adjacent-segment disease was a consistent finding at last follow-up but induced no neurological manifestations. Complete fusion of a level adjacent to the treated level was noted in 2 patients. Revision surgery for adjacent-segment disease was not required in any patient. CONCLUSION The causative factors of adjacent-segment disease are controversial. Disc degeneration is a normal manifestation of the ageing process. Nevertheless, disc disease is more prevalent at levels adjacent to interbody fusion than in the normal population, suggesting accelerated disc degeneration due to increased loading of the adjacent levels. Furthermore, lesions that are missed during the pre-operative work-up may play a role, as the available investigations do not always have high negative predictive values. LEVEL OF EVIDENCE Level IV, retrospective study.
Collapse
Affiliation(s)
- V Girard
- Service de chirurgie orthopédique et traumatologique, Centre hospitalier universitaire, 45, rue Cognacq-Jay, 51092 Reims cedex, France.
| | - B Leroux
- Service de chirurgie orthopédique et traumatologique, Centre hospitalier universitaire, 45, rue Cognacq-Jay, 51092 Reims cedex, France
| | - V Brun
- Service de chirurgie orthopédique et traumatologique, Centre hospitalier universitaire, 45, rue Cognacq-Jay, 51092 Reims cedex, France
| | - G Bressy
- Service de chirurgie orthopédique et traumatologique, Centre hospitalier universitaire, 45, rue Cognacq-Jay, 51092 Reims cedex, France
| | - H Sesmat
- Service de chirurgie orthopédique et traumatologique, Centre hospitalier universitaire, 45, rue Cognacq-Jay, 51092 Reims cedex, France
| | - K Madi
- Service de chirurgie orthopédique et traumatologique, Centre hospitalier universitaire, 45, rue Cognacq-Jay, 51092 Reims cedex, France
| |
Collapse
|
9
|
Yahia Cherif L, Yahiaoui I, Aissani-Benissad F, Madi K, Benmehdi N, Fourcade F, Amrane A. Heat Attachment Method for the Immobilization of TiO2 on Glass Plates: Application to Photodegradation of Basic Yellow Dye and Optimization of Operating Parameters, Using Response Surface Methodology. Ind Eng Chem Res 2014. [DOI: 10.1021/ie403970m] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- L. Yahia Cherif
- Laboratoire
de Génie de l’Environnement (LGE), Faculté de
Technologie, Université de Bejaia, 06000 Bejaia, Algeria
| | - I. Yahiaoui
- Laboratoire
de Génie de l’Environnement (LGE), Faculté de
Technologie, Université de Bejaia, 06000 Bejaia, Algeria
| | - F. Aissani-Benissad
- Laboratoire
de Génie de l’Environnement (LGE), Faculté de
Technologie, Université de Bejaia, 06000 Bejaia, Algeria
| | - K. Madi
- Laboratoire
de Génie de l’Environnement (LGE), Faculté de
Technologie, Université de Bejaia, 06000 Bejaia, Algeria
| | - N. Benmehdi
- Laboratoire
de Génie de l’Environnement (LGE), Faculté de
Technologie, Université de Bejaia, 06000 Bejaia, Algeria
| | - F. Fourcade
- Ecole
Nationale Supérieure de Chimie de Rennes, Université Rennes1, CNRS, UMR 6226, Avenue du Général
Leclerc, CS50837 , 35708 Rennes Cedex 7, France
- Université Européenne de Bretagne, 35000 Rennes, France
| | - A. Amrane
- Ecole
Nationale Supérieure de Chimie de Rennes, Université Rennes1, CNRS, UMR 6226, Avenue du Général
Leclerc, CS50837 , 35708 Rennes Cedex 7, France
- Université Européenne de Bretagne, 35000 Rennes, France
| |
Collapse
|
10
|
Dreyfuss L, Smati MF, Appriou M, Madi K, Malinovsky JM. [Postoperative visual loss: A case report of a hysterical conversion after a spine surgery]. ACTA ACUST UNITED AC 2013; 32:724-5. [PMID: 24095034 DOI: 10.1016/j.annfar.2013.07.816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2012] [Accepted: 07/16/2013] [Indexed: 10/26/2022]
Affiliation(s)
- L Dreyfuss
- Département d'anesthésie réanimation, CHU hôpital Maison Blanche, 45, rue Cognac-Jay, 51092 Reims, France.
| | | | | | | | | |
Collapse
|
11
|
Madi K, Tozzi G, Zhang Q, Tong J, Cossey A, Au A, Hollis D, Hild F. Computation of full-field displacements in a scaffold implant using digital volume correlation and finite element analysis. Med Eng Phys 2013; 35:1298-312. [DOI: 10.1016/j.medengphy.2013.02.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 01/07/2013] [Accepted: 02/05/2013] [Indexed: 01/25/2023]
|
12
|
Abstract
Bronchial biopsies of 21 patients with lung cancer were analyzed by Western blot for stress protein HSP70 and p53 proteins. Squamous carcinoma was the most common type found. The p53 protein was detectable in 14 cases. The HSP70 was detectable in 17 and overexpressed in 9 patients. Eleven patients showed positivity for both protein expressions, however no statistical significance was found (Kappa's test, p>0.05). Specific associations were not observed for HSP70 overexpression and p53 detection that could be related to clinical finds or tabagism. Our results indicate that the stress protein HSP70 is detectable and may be involved in the tumor development.
Collapse
Affiliation(s)
- M Costa
- UNIV FED RIO DE JANEIRO,INST BIOFIS CARLOS CHAGAS FILHO,LAB CONTROLE EXPRESSAO GEN,BR-21949900 RIO JANEIRO,BRAZIL. UNIV FED RIO DE JANEIRO,HOSP UNIV CLEMENTINO FRAGA FILHO,DEPT CLIN MED,SERV PNEUMOL,BR-21949900 RIO JANEIRO,BRAZIL. UNIV FED RIO DE JANEIRO,DEPT PATHOL,SERV ANAT PATOL,BR-21949900 RIO JANEIRO,BRAZIL
| | | | | | | | | | | |
Collapse
|
13
|
Eap C, Barresi L, Ohl X, Saddiki R, Mensa C, Madi K, Dehoux E. Odontoid fractures anterior screw fixation: a continuous series of 36 cases. Orthop Traumatol Surg Res 2010; 96:748-52. [PMID: 20850404 DOI: 10.1016/j.otsr.2010.04.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2009] [Revised: 02/28/2010] [Accepted: 04/28/2010] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Fracture of the odontoid process represents 5 to 15% of cervical spine fractures. Anterior screw fixation is the reference technique in unstable posterior oblique or horizontal odontoid fracture. OBJECTIVE We describe results with an original anterior screw fixation technique using a curved thoraco-lumbar pedicle awl to facilitate intra-operative reduction. PATIENTS AND METHODS This is a retrospective study of 36 consecutive patients who underwent anterior screw fixation for odontoid process fracture. Mean age was 70.3 years. Twenty six patients had type II and 10 type III fracture on the Anderson-D'Alonzo classification. On the Roy-Camille classification, there were 34 posterior oblique fractures and two horizontal fractures. There were no anterior oblique fractures. Bony union was assessed on CT-scan at 3 months. We describe the surgical technique, which used a 4.5mm cannulated cancellous lag screw in all cases. RESULTS Mean follow-up was 3 years (range, 4 months to 8 years). No intra-operative complications were observed. Union rate was 95% and the average time to union was 5 months (3 to 6 months). DISCUSSION Anterior screw fixation is a common surgical treatment for posterior oblique and horizontal odontoid process fractures. We detail a reliable and reproducible intra-operative reduction maneuver to obtain a good union rate without complications. LEVEL OF EVIDENCE Level IV. Retrospective therapeutic study.
Collapse
Affiliation(s)
- C Eap
- Maison Blanche University Hospital, Orthopedics and Traumatology Department, 45, rue Cognacq-Jay, 51100 Reims, France
| | | | | | | | | | | | | |
Collapse
|
14
|
Le Huec JC, Tournier C, Aunoble S, Madi K, Leijssen P. Video-assisted treatment of thoracolumbar junction fractures using a specific distractor for reduction: prospective study of 50 cases. Eur Spine J 2009; 19 Suppl 1:S27-32. [PMID: 19701654 DOI: 10.1007/s00586-009-1121-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2009] [Indexed: 10/20/2022]
Abstract
Posterior instrumentation allows good osteosynthesis for thoracolumbar junction fractures. However, in approximately 20% of cases, anterior bone defects may persist, leading to pseudoarthrosis and loss of reduction. Anterior approaches can circumvent this drawback, but they are considered aggressive with a high rate of complications. The advent of the endoscopic mini-invasive techniques has led to a reduction in the number of complications while maintaining the same consolidation rate. Nevertheless, poor restitution of anatomic curves is a reproach for this technique. This prospective study reports clinical and radiological result of 50 patients (19 women and 31 men) operated between April 2000 and March 2006 with a video-assisted anterior approach using an endodistractor for reduction and consequent insertion of the implant. There were A3 (n = 44), A2 (n = 2), A1 (n = 3) and C1 (n = 1) fractures (Magerl classification). The specific system for fracture reduction was used in the last 39 cases of this series. A Pyramesh cage (Medtronic, Memphis, USA) was used in 15 patients, a peek cage (Creaspine, Bordeaux, France) in 30 patients and a tricortical graft in 5 patients. Standard X-rays and CT scan were performed pre-operatively. Kyphosis, and angulations were measured pre-, per- and post-operatively. Mean immediate postoperative gain in localized kyphosis was 12.18 degrees and mean gain at last follow-up was 11.71 degrees. Mean immediate postoperative gain in RA was 13.24 degrees and remained identical at last follow-up. Five patients had a transient pulmonary atelectasia and there was one pulmonary infection. No neurological complication occurred. Fracture reduction is comparable to the best thoracotomy series while limiting approach-related complications.
Collapse
Affiliation(s)
- Jean-Charles Le Huec
- Spine Unit, Department of Orthopaedic Surgery, CHU Bordeaux, 33076, Bordeaux Cedex, France.
| | | | | | | | | |
Collapse
|
15
|
Harisboure A, Joveniaux P, Madi K, Dehoux E. The Valenti technique in the treatment of hallux rigidus. Orthop Traumatol Surg Res 2009; 95:202-9. [PMID: 19394916 DOI: 10.1016/j.otsr.2009.02.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2008] [Accepted: 02/02/2009] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Metatarsophalangeal joint osteoarthritis of the great toe (hallux rigidus) is a frequent condition for which numerous surgical techniques have been proposed. The most used ones are cheilectomy and arthrodesis. The objectives of this retrospective study are to present the midterm results of the Valenti procedure and to compare these results with those from other recognized surgical techniques. MATERIALS AND METHODS We conducted a retrospective analysis of a continuous group of 32 patients (41 cases) presenting hallux rigidus and treated using the Valenti technique from November 1999 to July 2004. The mean age of these patients at the time of surgery was 57 years. Forty-one percent of these patients also presented a static disorder of the foot. One or several additional procedures were undertaken, at the time of surgery, in 24% of these cases. Patients were assessed using the AOFAS score completed by the walking distance test, the gait test, the tiptoe test and self-evaluation of patient satisfaction. The radiographic work-up before surgery and at follow-up showed the progression of the joint space changes and allowed us to evaluate plantar subluxation at the base of the first phalanx under the metatarsal head. RESULTS Twenty-four patients (32 cases) were reviewed and evaluated with a mean follow-up of 5.5 years. Two cases of reflex sympathetic dystrophy were observed as complications. The mean final score was 81 out of 100 from a preoperative score of 47 out of 100. Pain was absent or only occasional in 94% of the cases. Discomfort wearing shoes was absent or moderate in 91% of the cases. Joint range of movement was greater than 30 degrees in 72% of the cases and the toes were stable. Walking distance was unlimited in 79% of the cases. A mean 30% plantar subluxation at the base of the first phalanx was noted at follow-up, with no clinical consequence. The results were comparable irrelevantly of the hallux rigidus grade being treated. DISCUSSION The numerous techniques proposed achieve comparable results both in terms of pain relief and functional result but each one has its own limitations. Only arthroplasties with silastic implants and the Keller technique give less satisfactory results. Arthrodesis remains the first-choice treatment for advanced hallux rigidus but failure is possible in case of technical error or malunion. Cheilectomy, a conservative intervention, is ideal for lesions that are not too advanced or remain limited to the dorsal part of the joint; this conservative option presents generally no specific complications. Prosthetic replacement--with, to date, little long-term experience for total arthroplasty--remains controversial because the results deteriorate over time. The Valenti procedure exposes the patient to a possible risk of metatarsophalangeal joint destabilization if the resection is too great, but this does not impair the final functional outcome. CONCLUSION The arthrectomy described by Valenti is a highly reproducible intervention. We find it to be a good compromise between mobility and stability, providing good results for all hallux rigidus grades and entailing a low complication rate. LEVEL OF CLINICAL EVIDENCE Level IV. Therapeutic Study.
Collapse
Affiliation(s)
- A Harisboure
- Department of orthopaedics and traumatology, Maison Blanche Hospital, 45, avenue Cognacq Jay, 51100 Reims, France.
| | | | | | | |
Collapse
|
16
|
Madi K, Aunoble S, Dehoux E, Le Huec JC. Incidence de la situation anatomique de la bifurcation ilio-cave lors de la mise en place d’une prothèse discale. ACTA ACUST UNITED AC 2006; 92:112-7. [PMID: 16800066 DOI: 10.1016/s0035-1040(06)75695-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 10/22/2022]
Abstract
PURPOSE OF THE STUDY The retroperitoneal mini-invasive anterior approach to the lumbar spine is widely used for disc excision and insertion of a prosthetic disc. A large operating window is needed. Venous wounds constitute one of the most serious complications. We analyzed the angle and position of the iliocaval on the preoperative angio-MRI in search for correlations with the intraoperative findings. Our aim was to determine whether the preoperative angio-MRI gives indications concerning the operative difficulty and the best strategy for prosthesis fitting. MATERIAL AND METHOD This prospective study included 35 consecutive patients who underwent surgery for implantation of a Maverick disc prosthesis. Average patient age was 46.7 years. The indication for surgery was isolated degenerative discopathy with invalidating chronic low back pain without alteration of the muscle masse or facet joints. A preoperative angio-MRI was performed with T1 spin-echo sequences for the coronal slices and T2 axial slices passing through the upper extremity of the L5-S1 disc. We searched for correlations between the MRI and operative findings. Elements studied were those used in the Capellades classification: height of the iliocaval junction (high, very high, low, very low), position of the common iliac vein (lateral, intermediate, medial), angle formed by the two common iliac veins. RESULTS The lateral position was the most frequent (31.5%). The average junction angle was 65 degrees). The only position where it was not possible to "pass" under the iliocaval junction was for a very low medial localization with a narrow angle (45 degrees). DISCUSSION Our series included a homogenous group comparable with other series in the literature. The junction angle for very low medial localizations is of considerable importance because it is impossible to fit the implant in the L5-S1 under the iliocaval junction if the angle is over 60 degrees. CONCLUSION The position of the iliocaval junction, and particularly its angle, are of considerable importance for insertion of an L5-S1 disc prosthesis. The preoperative angio-MRI provides information on the potential difficulty of the insertion. In addition, with this preoperative information, the patient can be warned that it may not be possible to insert the implant so that a therapeutic alternative may be proposed.
Collapse
Affiliation(s)
- K Madi
- Service d'Orthopédie, CHU Maison Blanche, 45, rue Cognacq-Jay, 51092 Reims Cedex
| | | | | | | |
Collapse
|
17
|
Abstract
PURPOSE OF THE STUDY There are several solutions for the treatment of fractures of the thoracolumbar junction (classical anterior, posterior, combined approaches). The advent of video-assisted minimally invasive techniques has helped minimize complications. The aim of this work was to analyze the clinical and radiological outcome in a prospective series of 20 patients who underwent video-assisted mini-thoracotomy for the treatment of thoracolumbar junction fractures. MATERIAL AND METHODS This prospective study included 20 patients, mean age 43.3 years, with at least one year follow-up. All patients presented a normal neurological examination (Frankel E). Fractures were classified Magerl A (n = 19) and B (n = 1). Corporectomy/correction (aided with an endodistractor in the last nine cases) was performed with grafting and osteosynthesis. Perioperative and postoperative complications were noted. Focal kyphosis and regional angulation were noted before and after the operation and at last follow-up using the Stagnara system. RESULTS The arthrodesis had fused at last follow-up in all patients. There were three cases of alelectasia which regressed in two months. Overall outcome showed satisfactory angular correction which was maintained at last follow-up. The gain in focal kyphosis was 13.71 degrees on average in the immediate postoperative period and persisted at last follow-up (13.31degrees). The gain in corrected regional angulation was 14 degrees in the immediate postoperative period and 14 degrees at last follow-up. The gain in focal kyphosis and regional angulation was two-fold greater with the endodistractor than with external maneuvers. DISCUSSION The complication rate was very low. Corrections obtained were comparable with those reported in the literature and persisted over time. CONCLUSION Bearing in mind the learning curve, there are fewer complications with the video-assisted minimally invasive approach than with classical thoracotomy or anterior surgery. This is true for perioperative and early and late postoperative complications. The correction achieved is satisfactory and lasting. A specific ancillary is essential for the reduction and for fitting the anterior graft without lost of correction. This technique combines the best results achieved with thoracotomy (Onimus) with a limited rate of complications.
Collapse
Affiliation(s)
- K Madi
- Service d'Orthopédie, CHU Maison Blanche, Reims.
| | | | | | | |
Collapse
|
18
|
|
19
|
Giraud B, Dehoux E, Jovenin N, Madi K, Harisboure A, Usandizaga G, Segal P. Comparaison vis-plaque dynamique et ostéosynthèse intra-médullaire antérograde dans les fractures pertrochantériennes. ACTA ACUST UNITED AC 2005; 91:732-6. [PMID: 16552995 DOI: 10.1016/s0035-1040(05)84484-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [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: 11/30/2022]
Abstract
PURPOSE OF THE STUDY The objective of this study was to compare the dynamic hip screw (Synthes) and intramedullary fixation (Targon PF, Aesculap) for the treatment of pertrochanteric fractures in terms of stability, complications and cost effectiveness. MATERIAL AND METHODS This prospective randomized study included 60 patients hospitalized in an emergency setting for pertrochanteric fractures between December 2003 and June 2004. All surgeons in our unit participated in the study. Two fixation systems were used: the Targon proximal femoral nail (Aesculap) and the screw-plate dynamic hip screw (Synthes). We noted: patient status (ASA classification), operative data (type of implant, duration), postoperative data (blood loss, radiographic findings, early complications), and outcome (Harris score, time to walking, mortality). All patients were assessed three months after surgery. The series included 60 patients, 14 men (23%) and 46 women (77%). The Targon PF nail was used for 34 patients and the DHS for 26. In the intramedullary fixation group mean age was 81 years (SD = 12.8, range 23-96); it was 82 years (SD 9.8, range 47-97) in the screw-plate group. The AO classification was: intramedullary fixation 31A1 (n = 11), 31A2 (n = 20), 31A3 (n = 3); screw-plate 31A1 (n = 14), 31A2 (n = 11), 31A3 (n = 1). Thirty-one fractures were stable, 29 unstable. Unstable fractures were treated with the Targon PF nail (n = 18) and the DHS screw-plate (n = 11). Stable fractures were treated with the Targon PF nail (n = 15) and the DHS screw-plate (n = 15). RESULTS Mean operative time was 35 minutes for intramedullary nailing and 42 mintues for screw-plate fixation. Mean blood loss was 410 ml for intramedullary nailing and 325 ml for screw-plate fixation (p = 0.07). Mean hospital stay was the same (11 days) in both groups. At three months, mechanical complications involved migration of the cervical screw outside the femoral head for three Targon PF fixations and for two DHS fixations. Screw migration was favored by fracture instability and presence of osteoporosis. There were two deaths in the intramedullary nailing group and one in the screw-plate group. Time to walking was 20 days on average in the intramedullary nailing group and 25 days in the screw-plate group. The mean Harris hip score was 60 in the intramedullary group and 59 in the screw-plate group. DISCUSSION AND CONCLUSION Data in the literature report an advantage for intramedullary nailing, particularly a mechanical advantage, for the treatment of pertrochanteric fractures. Our findings show that good results are obtained with the screw-plate fixation using the DHS with less blood loss and at a lower cost.
Collapse
Affiliation(s)
- B Giraud
- Service de Chirurgie Orthopédique et Traumatologique, CHU Reims, Hôpital Maison Blanche, Reims
| | | | | | | | | | | | | |
Collapse
|
20
|
Dehoux E, Madi K, Fourati E, Mensa C, Segal P. [High tibial open-wedge osteotomy using a tricalcium phosphate substitute: 70 cases with 18 months mean follow-up]. ACTA ACUST UNITED AC 2005; 91:143-8. [PMID: 15908884 DOI: 10.1016/s0035-1040(05)84292-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 10/22/2022]
Abstract
PURPOSE OF THE STUDY We report our experience with a B tricalcium phosphate ceramic to fill open-wedge tibial osteotomy gaps. MATERIAL AND METHODS Seventy high tibial open-wedge osteotomies were performed in 70 patients (47 men and 23 women). Ostotomy was performed for osteoarthritis in 56 knees, Ahlback classification stage I (n = 18), stage II (n = 32), stage III (n = 6) and for congenital varus in 14. Mean patient age was 45.2 years (16-69). We used a wedge-shaped piece of ceramic with an appropriate angle, which was associated with granulated material to complete the gap filling for the last 20 cases. One or two staples were used for fixation. Clinical and radiological outcome was assessed at 6 weeks, 3 months, 6 months, and at last follow-up. Mean follow-up was 18 months. RESULTS There were no biological or clinical complications related to biomaterial intolerance. Tolerance to the osteosynthesis material was mediocre since we observed one infection and 12 cases of pain related to the staples which required material removal in 8 patients. Bone healing was achieved in 98.5%. Final correction was between 3 degrees and 6 degrees valgus in 80.5%. There was a loss of correction angle between the postoperative film and the bone healing film. Factors related to sustained correction were: non-fractured wedge, intact lateral tibial cortical, osteosynthesis with two staples. Osteointegration was good and rapid in 96%. We found two complete lucent lines at last follow-up but with variable resorption depending on the shape of the bone substitute. CONCLUSION Use of a ceramic wedge to fill high tibial medial open-wedge osteotomy gap is a reliable reproducible technique providing correction without formation of a malalignment callus. Bone healing is achieved in 98.5% of the cases at about three months. Osteointegration is good in 96%. Resorption is complete and rapid when the substitute is implanted in granular form in a cancellous zone and is partial and slow when implanted as a massive wedge.
Collapse
Affiliation(s)
- E Dehoux
- Service de Chirurgie Orthopédique et Traumatologique, CHU Maison Blanche, 45, rue Cognacq-Jay, 51100 Reims.
| | | | | | | | | |
Collapse
|
21
|
Yparraguirre IT, Sant'Anna CC, Lopes VG, Madi K. [Pulmonary involvement in children with AIDS: clinical study and necropsy of 14 cases]. Rev Assoc Med Bras (1992) 2001; 47:129-36. [PMID: 11468680 DOI: 10.1590/s0104-42302001000200031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 11/22/2022] Open
Abstract
BACKGROUND To describe clinical, laboratorial, radiological, and histopathological lung findings from necroscopy of aidetic children with pulmonary disease. MATERIAL AND METHODS Fourteen children admitted at the Hospital Universitário Antônio Pedro - Universidade Federal Fluminense, Niterói, RJ, and Instituto de Puericultura e Pediatria Martagão Gesteira - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, between 1989 and 1996, were revised in a retrospective survey. RESULTS Eight were males (57%). The median age was 1.2 years old (from three months to nine years). Nine children (64.4%) were younger than 24 months old. The HIV transmission was vertical in 10 (71%) children. In these cases, five mothers were contaminated from heterosexual relations. Pneumonia (n=8), oral candidiasis (n=8), and diarrhea (n=5) were the most common previous conditions. The most frequent signs and symptoms on admission were fever (n=12), respiratory distress (n=10), cough (n=10), peripheral lymphadenopathy (n=11), hepatomegaly and/or splenomegaly (n=10), and malnutrition (n=9). The chest x-rays findings were condensation (n=5) and diffuse infiltrates (n=6) patterns. The microscopic lung characteristics were compatibles with pneumonia by cytomegalovirus (CMV) (n=9), bacteria (n=8), Pneumocystis carinii (n=3), Toxoplasma gondii (n=1), Hystoplasma capsulatum (n=1) and Lymphocytic interstitial pneumonia (n=1). The association between CMV and bacteria was observed in six cases. CONCLUSIONS Age less than two years old, vertical transmission, inespecific clinical presentation of pneumonia, and infiltrates and condensation patterns at the x-rays were the predominant characteristics. Cytomegalovirus and bacteria were the most common etiologic agents, being their association frequent. Lymphocytic interstitial pneumonia and pneumonia by P. carinii were not common causes of pulmonary disease.
Collapse
|
22
|
Abstract
Formerly considered rare, adenocarcinoma has become the commonest form of primary lung cancer in developed countries. Its clinical presentation has changed, with central tumors becoming more frequent. We reviewed all biopsies with a diagnosis of primary lung cancer obtained from October 1988 to April 1997 in a tertiary care hospital in Rio de Janeiro. Medical records from adenocarcinomas were analysed. Adenocarcinoma was the commonest form of lung cancer (168/409, 41%). Central tumors were observed in 43% according to radiological criteria and 47% according to bronchoscopic criteria. The frequency and clinical presentation of adenocarcinoma have evolved lately in Rio de Janeiro.
Collapse
Affiliation(s)
- M C Kaisermann
- Federal University of Rio de Janeiro, Barra da Tijuca 22640-102, Rio de Janeiro, Brazil.
| | | | | |
Collapse
|
23
|
Elia C, Souza H, Carvalho AT, Madi K, Mello CA, Oliveira A, Cuckier R, Papi JA. Humoral intestinal immunity in systemic lupus erythematosus. J Clin Gastroenterol 2000; 30:52-5. [PMID: 10636210 DOI: 10.1097/00004836-200001000-00009] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Forty-five patients with systemic lupus erythematosus (SLE) underwent a cross-sectional study to evaluate intestinal secretory immunity. Peroral jejunal biopsy with histologic and immunohistochemical assessment of the mucosa were carried out in the patients and in 12 healthy volunteers. It was observed that an altered pattern of immunoglobulin-bearing plasma cells distributed in the lamina propria and complementary components were invariably present, mainly in the patients with active disease. The basement membrane of the intestinal crypt epithelium exhibited immunoglobulin and complementary deposits, similar to the lupus band test. None of the immunologic findings correlated with the medical treatment and with the peripheral blood analysis. The local changes in humoral immunity in patients with SLE did not correlate with gastrointestinal symptoms and may reflect the systemic effects of the disease.
Collapse
Affiliation(s)
- C Elia
- Multidisciplinary Laboratory of the Federal University Hospital of Rio de Janeiro, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Abstract
PURPOSE To develop a stereological comparison between right (RV) and left ventricle (LV) myocardium during the third human gestational trimester. METHODS Five human fetal hearts of the third trimester provided representative samples of 5 RV myocardium and 4 LV myocardium. The material was fixed in 10% buffered formaldehyde, and processed through routine methods. Fifteen microscopic fields were randomly chosen and counted in each ventricular myocardium using an "M-42" test system. The following stereological parameters were assessed: Vv (%), Lv (micron 2), Sv (micron 2/micron 3), Vp (micron 3), Nv (1/mm3) and total N. RESULTS No significant difference between the stereological parameters of the myocardial structures assessed was evidenced, when comparing RV and LV. CONCLUSION Right and left human ventricular myocardium are very similar during the fetal period at least in regard to their structural aspects.
Collapse
Affiliation(s)
- R Xavier-Vidal
- Hospital Universitário Clementino Fraga Filho-UFRJ, Rio de Janeiro, Brazil.
| | | |
Collapse
|
25
|
Xavier-Vidal R, Madi K, de Lima RJ, Marques NM, Reis ADA, Paes LDS. [Experimental anatomo-pathologic study in the myocardium of animals with arterial hypertension caused via a nitric oxide synthesis blocker]. Rev Port Cardiol 1999; 18:381-91. [PMID: 10371846] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
INTRODUCTION Cardiac hypertrophy and reactive (including perivascular) and reparative fibrosis in L-NAME model are similar to that of hypertensive and cardiomyopathic patients. THE AIM To qualitatively evaluate the reactive (including perivascular) and reparative fibrosis, on days 21 and 35, occurring in hearts submitted to the L-NAME model, using special staining. MATERIAL AND METHODS We utilized 33 normotensive Wistar rats. L-NAME was administered orally--in a concentration of 75 mg x 100 ml-1 in drinking water. Six rats were submitted during 21 days and an other 15 rats during 35 days. The arterial pressure was obtained on days 12, 20 and 34 using hydraulic plethysmography. On days 21 and 35 during the experiment the animals were anesthetized and submitted to cardiotomy. The hearts were fixed in Bouin fixative during 48 hours and processed using routine methods, emblocked in paraplast and cut in slices 4 to 7 microns thick. The special staining utilized were: Gomori's trichrome (aniline blue) or Masson trichrome, picro-sirius red-polarization, alcian blue technique (pH 0.5 and pH 2.5), periodic acid-Schiff technique (with and without amylases) and Weigert's resorcinol fuchsin solution (with and without oxon). RESULTS Our results demonstrated an increase in the arterial pressure in animals submitted to the model. On day 21 of submission we observed modest to extensive infarct areas in the right and left ventricular myocardium. On day 35 the wide reparative areas were from old infarct areas. In some cases at day 35 the lesions reached the totality of the right ventricle in several histological slices. The right ventricle was much more affected than the left one. In both groups perivascular fibrosis was observed, nevertheless, on day 21 it was very reduced. DISCUSSION The degree of direct influence of NO or hypertension produced by NO on hypertension and cardiac lesions during L-NAME model is discussed nowadays. Nevertheless, the fact is that NO deficit has great influence in several cases of cardiac lesions occurring in hypertension and also in cardiomyopathies.
Collapse
Affiliation(s)
- R Xavier-Vidal
- Laboratório de Anatomia Patológica, Instituto de Puericultura e Pediatria Martagão Gesteira.
| | | | | | | | | | | |
Collapse
|
26
|
Paumgartten FJ, De-Carvalho RR, Souza CA, Madi K, Chahoud I. Study of the effects of beta-myrcene on rat fertility and general reproductive performance. Braz J Med Biol Res 1998; 31:955-65. [PMID: 9698761 DOI: 10.1590/s0100-879x1998000700012] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [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: 02/08/2023] Open
Abstract
beta-Myrcene (MYR) is a monoterpene found in the oils of a variety of aromatic plants including lemongrass, verbena, hop, bay, and others. MYR and essential oils containing this terpenoid compound are used in cosmetics, household products, and as flavoring food additives. This study was undertaken on investigate the effects of MYR on fertility and general reproductive performance in the rat. MYR (0, 100, 300 and 500 mg/kg) in peanut oil was given by gavage to male Wistar rats (15 per dose group) for 91 days prior to mating and during the mating period, as well as to females (45 per dose group) continuously for 21 days before mating, during mating and pregnancy, and throughout the period of lactation up to postnatal day 21. On day 21 of pregnancy one-third of the females of each group were submitted to cesarean section. Resorption, implantation, as well as dead and live fetuses were counted. All fetuses were examined for external malformations, weighed, and cleared and stained with Alizarin Red S for skeleton evaluation. The remaining dams were allowed to give birth to their offspring. The progeny was examined at birth and subsequently up to postnatal day 21. Mortality, weight gain and physical signs of postnatal development were evaluated. Except for an increase in liver and kidney weights, no other sign of toxicity was noted in male and female rats exposed to MYR. MYR did not affect the mating index (proportion of females impregnated by males) or the pregnancy index (ratio of pregnant to sperm-positive females). No sign of maternal toxicity and no increase in externally visible malformations were observed at any dose level. Only at the highest dose tested (500 mg/kg) did MYR induce an increase in the resorption rate and a higher frequency of fetal skeleton anomalies. No adverse effect of MYR on postnatal weight gain was noted but days of appearance of primary coat, incisor eruption and eye opening were slightly delayed in the exposed offspring. On the basis of the data presented in this paper the no-observed-adverse-effect level (NOAEL) for toxic effects on fertility and general reproductive performance can be set at 300 mg of beta-myrcene/kg body weight by the oral route.
Collapse
Affiliation(s)
- F J Paumgartten
- Laboratório de Toxicologia Ambiental, Escola Nacional de Saúde Pública, FIOCRUZ, Rio de Janeiro, Brasil
| | | | | | | | | |
Collapse
|
27
|
Silva N, Costa M, Madi K, Barbosa L, Rosas S, Carvalho M. p53 as tumor marker for the early detection of reincidence in lung cancer. Oncol Rep 1996; 3:843-5. [PMID: 21594465 DOI: 10.3892/or.3.5.843] [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: 11/06/2022] Open
Abstract
To examine the p53 expression in cancer development, we studied the case of a 59-year-old male suffering from squamous cell lung cancer. He was submitted to surgery for resection of the tumoral mass. Through immunoblot and immunohistochemical analysis, the tumor fragment was shown to bear p53 and hsp70 accumulation not detected in the normal lung tissue sample. Six months later, immunohistochemical analysis of a biopsy sample taken from the previous tumor site showed p53 accumulation. Considering the high specificity for p53 detection (100%), this result suggests probable tumor reincidence, not detected by the ordinary H&E staining.
Collapse
Affiliation(s)
- N Silva
- FED UNIV RIO DE JANEIRO,INST BIOFIS CARLOS CHAGAS FILHO,CTR CIENCIAS SAUDE,BR-21949900 RIO JANEIRO,BRAZIL. FED UNIV RIO DE JANEIRO,HOSP UNIV CLEMENTINO FRAGA FILHO,DEPT PATOL,BR-21941590 RIO JANEIRO,BRAZIL. FED UNIV RIO DE JANEIRO,HOSP UNIV CLEMENTINO FRAGA FILHO,SERV PNEUMOL,BR-21941590 RIO JANEIRO,BRAZIL
| | | | | | | | | | | |
Collapse
|
28
|
Souza HS, Carvalho AT, Madi K, Lapa e Silva JR, Elia CS. Phenotypic analysis of intestinal non-inflamed mucosa in Crohn's disease: evidence of mononuclear cell depletion in lamina propria. Eur J Gastroenterol Hepatol 1996; 8:563-8. [PMID: 8823571 DOI: 10.1097/00042737-199606000-00013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [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: 02/02/2023]
Abstract
OBJECTIVE The objective of this study was to examine mononuclear cell subpopulations and evidence of cellular activation in unaffected jejunal mucosa in Crohn's disease. DESIGN A cross-sectional study was performed in patients with Crohn's disease from the ambulatory unity of the University Hospital, UFRJ. METHODS Mucosal samples from 20 patients with Crohn's colitis or ileitis were obtained by peroral jejunal biopsy. Patients with jejunal involvement or pregnant women were excluded from the study. Specimens were analysed histologically and by indirect immunoperoxidase method using anti-monoclonal antibodies to CD2, CD4, CD8, CD25, CD45RO, RFDR1, RFD1 and RFD7 by two 'blind' observers. Seven patients with non-inflammatory bowel disorders and two healthy volunteers were studied as controls. RESULTS Lamina propria CD2-positive (CD2+) cells were reduced in Crohn's disease (P < 0.004) whether clinically active (P < 0.02) or clinically inactive (P < 0.008). CD4+ and CD8+ cells were also reduced in Crohn's disease (P < 0.003), whereas the CD4:CD8 ratio did not differ from that in controls. CD25+, CD45RO+ and HLA-DR+ cells were not significantly increased in patients with Crohn's disease. RFD7+ cells were decreased in Crohn's disease (P < 0.02), whereas RFD1+ cells were not significantly different from the control group. CONCLUSION No evidence of cellular activation was found in the unaffected mucosa of Crohn's disease. The reduction in T-cell and macrophage-like cell numbers may result from cell migration to inflamed areas. It is also possible that this finding represents a primary defect which may have a role in the pathogenesis of Crohn's disease.
Collapse
Affiliation(s)
- H S Souza
- Laboratório Multidisciplinar, University Hospital, Federal University of Rio de Janeiro (UFRJ), Brazil
| | | | | | | | | |
Collapse
|
29
|
Rosman FC, Mistchenko AS, Ladenheim HS, do Nascimento JP, Outani HN, Madi K, Lenzi HL. Acute and chronic human adenovirus pneumonia: cellular and extracellular matrix components. Pediatr Pathol Lab Med 1996; 16:521-41. [PMID: 9025850 DOI: 10.1080/15513819609168688] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We present a comparative histopathological study of both acute and chronic human adenovirus pneumonia, with reference to the cellular and extracellular matrix components. Seventeen lungs from autopsied patients whose ages ranged from 2 to 60 months were studied. Adenovirus types 1, 2, 3, 5, and 7 were isolated from 15 patients with acute lung disease, and types 2 and 7 were isolated from the other two patients with chronic pulmonary illness. The results indicated the occurrence of two basic patterns of adenovirus interstitial pneumonia (1) classic pattern (acute), characterized by necrosis and degeneration and many type II pneumocytes with intranuclear inclusion bodies, which were positive for adenovirus DNA by in situ hybridization, and (2) proliferative or proliferative-productive pattern (chronic), which presented with diffuse pulmonary fibrosis and the interstitial proliferation of fibroblast-like cells, compatible with myofibroblasts (positive for vimentin and alpha smooth muscle actin), and increase in collagen types I and III, elastic fibers, and proteoglycans. Alveolar collapse appears to be an important pathogenetic mechanism in the development of this pattern.
Collapse
Affiliation(s)
- F C Rosman
- Departamento de Patologia, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | | | | | | | | | | | | |
Collapse
|
30
|
Schanaider A, Madi K. Intestinal strongyloidiasis mimicking a tumour. Eur J Surg 1996; 162:429-30. [PMID: 8781930] [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: 02/02/2023]
Affiliation(s)
- A Schanaider
- Department of Surgery and Pathology, Federal University of Rio de Janeiro, Brazil
| | | |
Collapse
|
31
|
Schanaider A, Madi K. Intra-abdominal tuberculosis in acquired immunodeficiency syndrome. Diagnosis and management. Int Surg 1995; 80:147-51. [PMID: 8530232] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Tuberculosis (TB) in human immunodeficiency virus (HIV) immunosuppressed patients is characterized by extra-pulmonary disease in as many of 70% of them. If intestinal or lymph node involvement occurs, the differential diagnosis between an acute abdomen and other non surgical conditions may be a challenging problem. The authors analyzed eight double infected patients (TB and acquired immunodeficiency syndrome AIDS), who were admitted to the University Hospital (HUCFF) of the Federal University of Rio de Janeiro. This association should be considered when abdominal pain, anemia, fever, weight loss and abdominal lymph node enlargement are present. Bacteriology of body fluids, abdominal ultrasound (US) and computed tomography scans (CT) combined with guided needle aspiration biopsies, barium examination, colonoscopy and laparoscopy, can not only elucidate the diagnosis but also be helpful in assessing an appropriate management. Thus a systematic evaluation often yields an etiology and a correct therapeutic indication reducing the high mortality rate.
Collapse
MESH Headings
- AIDS-Related Opportunistic Infections/diagnosis
- AIDS-Related Opportunistic Infections/pathology
- AIDS-Related Opportunistic Infections/surgery
- Adult
- Biopsy, Needle
- Brazil
- Diagnostic Imaging
- Female
- HIV-1
- Humans
- Lymph Nodes/pathology
- Male
- Middle Aged
- Peritoneum/pathology
- Peritonitis, Tuberculous/diagnosis
- Peritonitis, Tuberculous/pathology
- Peritonitis, Tuberculous/surgery
- Tuberculosis, Gastrointestinal/diagnosis
- Tuberculosis, Gastrointestinal/pathology
- Tuberculosis, Gastrointestinal/surgery
- Tuberculosis, Lymph Node/diagnosis
- Tuberculosis, Lymph Node/pathology
- Tuberculosis, Lymph Node/surgery
Collapse
Affiliation(s)
- A Schanaider
- Department of Surgery and Pathology, Federal University of Rio de Janeiro, Brazil
| | | |
Collapse
|
32
|
Trajman A, Belo M, Oliveira A, Madi K, Elia C. Quantitative and qualitative changes in intestinal immunoglobulin-bearing plasma cells in jejunal mucosa of 52 HIV-infected patients. Braz J Med Biol Res 1994; 27:1215-24. [PMID: 8000343] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
1. The purpose of the present study was to evaluate the intestinal secretory immunity of HIV-infected patients. Jejunal biopsies were obtained with a Watson capsule from 52 HIV-infected patients and compared to a control group consisting of 12 healthy subjects, matched for age and sex. IgA- and IgM-containing plasma cells were studied by immunofluorescence by two independent observers who had no knowledge of the history of the slides. 2. The IgA and IgM plasma cell density was significantly decreased in HIV-infected patients when compared to the controls (31/52 for IgA and 42/52 for IgM in the HIV group and normal density in all controls). The depletion of intestinal plasma cells was an early feature of HIV disease and did not correlate with diarrhea, enteropathogens or mucosal atrophy. Although IgA plasma cell depletion has been described in HIV infection, this is the first report of IgM cell density reduction. 3. A peripheral fluorescence pattern was observed in the intestinal cells of HIV-infected patients, contrasting with the normal cytoplasmic fluorescence pattern seen in controls. The cells presenting a rim of peripheral fluorescence in HIV disease might correspond to immature B lymphocytes. 4. The intestinal plasma cell depletion may result in hampered mucosal defense in HIV disease, and is likely to be a direct consequence of T lymphocyte function impairment. 5. The data indicate that the intestinal secretory immune system is altered in AIDS and also in the early stages of HIV disease.
Collapse
Affiliation(s)
- A Trajman
- Departamentos de Clínica Médica, Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Brasil
| | | | | | | | | |
Collapse
|
33
|
Abstract
Previous studies have shown that malnutrition severely affects both lymphoid and epithelial components of the thymus. Yet, few data are available concerning the extracellular matrix (ECM) of the thymic microenvironment in malnutrition. We studied by histological, ultrastructural, and immunohistochemical means thymuses obtained in necropsies from 19 malnourished children. We observed a consistent increase in the intralobular ECM-containing network which could be ascertained histologically by the dense reticulin staining. This abnormally dense ECM network contained fibronectin, laminin, and type IV collagen. Importantly, the enhancement of thymic ECM in malnourished individuals positively correlated with the degree of thymocyte depletion. This correlation may represent a cause-effect relationship in which the contact of thymocytes with abnormally high amounts of thymic ECM triggers and/or enhances programmed cell death.
Collapse
Affiliation(s)
- J S Lyra
- Department of Immunology, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | | | | |
Collapse
|
34
|
Nascimento OJ, Madi K, Guedes e Silva JB, Soares Filho PJ, Hahn MD, Couto B, Freitas MR. [Striated muscle in protein malnutrition: an experimental study in albino rats]. Arq Neuropsiquiatr 1990; 48:395-402. [PMID: 2128795 DOI: 10.1590/s0004-282x1990000400001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The effects of undernutrition on the "gastrocnemius plantaris" muscle of young albino rats were observed with light and electronmicroscopy and were compared with controls. Pregnant rats received a diet containing 6.7% protein and the neonates had a 3.2% protein diet after weaning. A total number of 40 animals were distributed in two groups: one hypoproteic and one control. Half of the animals of each group were killed 15 days after birth and the remaining ones at 30 days. We could observe important reduction in the weight of the undernourished rats reaching about 50% when compared with the control animals. An important reduction in the diameter of muscle fibers was noted in undernourished rats. Histochemical reactions showed that not only the type I but also the type II fibers were involved, the latter being more severely reduced in size. Type II fibers os small diameter, resembling F (fetal) fiber were found in animals at 15 days indicating a delay in maturation. Ultrastructural evaluation of the muscle did not show specific changes except for a severe reduction in the caliber of fibers when compared with control animals. We concluded that there was hypoplasia and not atrophy of the muscular tissue in animals submitted to pre- and post-natal undernutrition. The present study, associated with others in which the spinal motor cells and peripheral nerves of undernourished rats were analysed, allow us to consider that with protein deprivation there is a delay in the development, a hypoplasia of the motor unit. We think that in infantile progressive spinal amyotrophy (Werdnig-Hoffmann disease) there is possibly hypoplasia and not atrophy of the type II fibers and we postulate that a metabolic proteic problem is involved in this disease.
Collapse
Affiliation(s)
- O J Nascimento
- Departamento de Medicina Clínica, UFF, Hospital Universitário Antonio Pedro, Brasil
| | | | | | | | | | | | | |
Collapse
|
35
|
Abstract
An outbred strain of Swiss mice carrying malignant neoplasms (48 female with mammary carcinoma, 1 male with osteosarcoma) is described with a high frequency of amyloid deposits selectively located in the ileum. Amyloid deposits were demonstrated by Congo red staining and electron microscopy. Comments are directed toward methods of amyloid detection, as well as pathogenic considerations.
Collapse
Affiliation(s)
- K Madi
- Department of Pathology, School of Medicine, Federal University of Rio de Janeiro, Brasil
| | | | | | | | | |
Collapse
|
36
|
De Paola D, Duarte F, Madi K, Dias L. Fulminant tropical hepatitis--experimental reproduction. Exp Pathol 1990; 39:25-30. [PMID: 2118454 DOI: 10.1016/s0232-1513(11)80216-1] [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: 12/30/2022]
Abstract
After a review of the literature on epidemiological, serological and histopathological data concerning so-called "Amazon Black Fever" (Labrea disease), an experimental model of morphological reproduction of the disease is presented. The model is based on the probable causal synergism of Labrea hepatitis, i.e., viral injury plus protein-caloric malnutrition. Mice infected with the Oriboca arbovirus presented classic yellow-fever-like lesions of the liver, with a few malnourished animals showing the characteristic morular changes of the human disease.
Collapse
Affiliation(s)
- D De Paola
- Department of Pathology, School of Medicine, Federal University of Rio de Janeiro, UFRJ, Brazil
| | | | | | | |
Collapse
|
37
|
Elia C, Oliveira AV, Madi K. [Jejunal biopsy in AIDS]. Arq Gastroenterol 1989; 26:100-4. [PMID: 2486028] [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: 01/01/2023]
Abstract
Histopathological changes in small bowel biopsy from 5 patients with acquired immunodeficiency syndrome are reported. The main abnormalities were villous atrophy, severe mononuclear infiltrate and enhanced regenerative activity with high number of mitosis in the crypts.
Collapse
Affiliation(s)
- C Elia
- Hospital Universitário Clementino Fraga Filho, Programa SIDA, AIDS da Universidade Federal do Rio de Janeiro
| | | | | |
Collapse
|
38
|
Abstract
Normal and undernourished mice inoculated orally and intraperitoneally with cocal virus show panencephalitis and acute poliomyelitis, which is more accentuated in cases of malnutrition. Speculations are made regarding viral penetration and progression in the nervous system.
Collapse
Affiliation(s)
- F Duarte
- Department of Pathology, School of Medicine, Federal University of Rio de Janeiro (UFRJ), Brasil
| | | | | | | |
Collapse
|
39
|
Elia C, Madi K, Carapatoso AC, Carneiro AJ, Zaltman C, Fogaça H, Moço MR, Ribeiro MB. [Experience with peroral biopsy of the small intestine at the University Hospital--Federal University of Rio de Janeiro]. Arq Gastroenterol 1986; 23:145-51. [PMID: 3435263] [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 experience with 103 jejunal biopsies in the Rio de Janeiro University Hospital--UFRJ, from January 1983 to June 1985 is presented. It is reported the effectiveness of the method and the low number of complications. The importance as a valuable complementary method of diagnosis and the usefulness in the small intestine disease's scientific investigation is emphasized.
Collapse
Affiliation(s)
- C Elia
- Departamento de Clínica Médica Faculdade de Medicina, Universidade Federal do Rio de Janeiro
| | | | | | | | | | | | | | | |
Collapse
|
40
|
Tomkins AM, Madi K, Ogilvie BM. Effect of marginal protein malnutrition on repeated nematode infection of small intestine. Proc Nutr Soc 1978; 37:10A. [PMID: 566436] [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: 12/23/2022]
|
41
|
Madi K, Heard CR. The effects of supplementary tube-feeding used in an attempt to increase the food intake of rats fed on a low-protein diet. Proc Nutr Soc 1977; 36:100A. [PMID: 414227] [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: 12/15/2022]
|
42
|
Campos DG, Madi K. [Studies on pre- and post-natal malnutrition in albino rats. Partial ponderal and biochemic recuperation (author's transl)]. Rev Bras Pesqui Med Biol 1975; 8:301-6. [PMID: 814588] [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: 12/24/2022]
Abstract
Attempts at restoring the state of malnutrition experimentally induced in rats during pre- and post-natal periods, led to the following remarks: 1) animals fed a normal diet soon improved their weight and levels of this blood proteins; 2) the restoration levels obtained at the end of 120 days of treatment did not reach, however, that obtained by the control animals.
Collapse
|
43
|
Madi K, Campos SD. [Experimental malnutrition: biochemical and anatomic-pathological results of feeding a protein-deficient diet to young albino rats]. Mem Inst Oswaldo Cruz 1975; 73:153-81. [PMID: 1234976 DOI: 10.1590/s0074-02761975000200002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Na tentativa de reproduzir experimentalmente os achados morfológicos e eletroforéticos (proteínas no soro) observados na desnutrição infantil, dois grupos de experiências foram realizados em ratos albinos jovens, submetendo-os a uma dieta pobre em proteínas (2%) por períodos de 41 a 88 dias. O modelo experimental reproduz em linhas gerais os principais danos estruturais vistos na patologia humana, ficando num meio termo entre kwashiorkor e marasmo. Alterações atróficas tegumentares foram assinaladas como achado tardio. O achado mais conspícuo foi metamorfose gordurosa hepática do tipo perilobular. A regeneração hepatocelular foi abortiva, aparecendo nos estágios finais das experiências ao lado dos fenômenos regressivos. Foi possível estabelecer seqüência lesional nas alterações estruturais do pâncreas, desde mofificações da quantidade de grânulos de zimogênio nos estágios iniciais até a atrofia acinosa acentuada, subvertendo a arquitetura do órgão, nos estágios finais. As alterações intestinais culminaram com o quadro de atrofia, não comparável em intensidade com a patologia humana, correspondem à diminuição da altura do epitélio mucoso, hipocelularidade da lâmina própria, criptas pequenas, pobreza em mitoses, que encurtam as vilosidades, assemelhando-se ao padrão mucoso dos chamados animais "germ-free". Além disso, os autores chamam a atenção para a intensa dimuição das célular muco-secretoras ao nível do epitélio do intestino delgado e grosso. No modelo surpreende-se também uma depleção linfo-histiocitária, representada por atrofia das placas de Peyer, diminuição das célular de Kupffer, atrofia do timo e depleção linfóide ganglionar e esplênica. O estudo bioquímico do soro revelou baixa das proteínas totais e do colesterol. A eletroforese de proteínas demonstrou acentuada baixa da fração albumina, com inversão A/G. Entre as globulinas, as frações alfa1 e alfa2 estão aumentadas no grupo desenutrido. Estes achados podem ser atribuídos à carência protéica, porquanto os controles utilizados, mesmo aqueles com restrição calórica, não apresentaram alterações histológicas ou hipoalouminemia.
Collapse
|
44
|
Teixeira J, Duarte F, Madi K, de Paola D. [Primary pulmonary botryomycosis. 1st case reported in Brazil]. Rev Bras Med 1972; 29:119-23. [PMID: 5033149] [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: 01/13/2023]
|
45
|
Madi K, Jervis HR, Anderson PR, Zimmerman MR. A protein-deficient diet. Effect on the liver, pancreas, stomach, and small intestine of the rat. Arch Pathol 1970; 89:38-52. [PMID: 4391478] [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]
|