1
|
Bejenaru C, Radu A, Segneanu AE, Biţă A, Ciocîlteu MV, Mogoşanu GD, Bradu IA, Vlase T, Vlase G, Bejenaru LE. Pharmaceutical Applications of Biomass Polymers: Review of Current Research and Perspectives. Polymers (Basel) 2024; 16:1182. [PMID: 38732651 PMCID: PMC11085205 DOI: 10.3390/polym16091182] [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: 03/08/2024] [Revised: 04/15/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
Polymers derived from natural biomass have emerged as a valuable resource in the field of biomedicine due to their versatility. Polysaccharides, peptides, proteins, and lignin have demonstrated promising results in various applications, including drug delivery design. However, several challenges need to be addressed to realize the full potential of these polymers. The current paper provides a comprehensive overview of the latest research and perspectives in this area, with a particular focus on developing effective methods and efficient drug delivery systems. This review aims to offer insights into the opportunities and challenges associated with the use of natural polymers in biomedicine and to provide a roadmap for future research in this field.
Collapse
Affiliation(s)
- Cornelia Bejenaru
- Department of Pharmaceutical Botany, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj, Romania; (C.B.); (A.R.)
| | - Antonia Radu
- Department of Pharmaceutical Botany, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj, Romania; (C.B.); (A.R.)
| | - Adina-Elena Segneanu
- Institute for Advanced Environmental Research, West University of Timişoara (ICAM–WUT), 4 Oituz Street, 300086 Timişoara, Timiş, Romania; (I.A.B.); (T.V.); (G.V.)
| | - Andrei Biţă
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj, Romania; (A.B.); (G.D.M.); (L.E.B.)
| | - Maria Viorica Ciocîlteu
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj, Romania;
| | - George Dan Mogoşanu
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj, Romania; (A.B.); (G.D.M.); (L.E.B.)
| | - Ionela Amalia Bradu
- Institute for Advanced Environmental Research, West University of Timişoara (ICAM–WUT), 4 Oituz Street, 300086 Timişoara, Timiş, Romania; (I.A.B.); (T.V.); (G.V.)
| | - Titus Vlase
- Institute for Advanced Environmental Research, West University of Timişoara (ICAM–WUT), 4 Oituz Street, 300086 Timişoara, Timiş, Romania; (I.A.B.); (T.V.); (G.V.)
- Research Center for Thermal Analyzes in Environmental Problems, West University of Timişoara, 16 Johann Heinrich Pestalozzi Street, 300115 Timişoara, Timiş, Romania
| | - Gabriela Vlase
- Institute for Advanced Environmental Research, West University of Timişoara (ICAM–WUT), 4 Oituz Street, 300086 Timişoara, Timiş, Romania; (I.A.B.); (T.V.); (G.V.)
- Research Center for Thermal Analyzes in Environmental Problems, West University of Timişoara, 16 Johann Heinrich Pestalozzi Street, 300115 Timişoara, Timiş, Romania
| | - Ludovic Everard Bejenaru
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj, Romania; (A.B.); (G.D.M.); (L.E.B.)
| |
Collapse
|
2
|
Docea AO, Cirstea AE, Cercelaru L, Drocas AI, Dinca V, Mesnage R, Marginean C, Radu A, Popa DG, Rogoveanu O, Mitrut R, Antoniou MN, Tsatsakis A, Hernández AF, Calina D. Effect of perinatal exposure to glyphosate and its mixture with 2,4-D and dicamba on rat dam kidney and thyroid function and offspring's health. Environ Res 2023; 237:116908. [PMID: 37597833 DOI: 10.1016/j.envres.2023.116908] [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] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/21/2023]
Abstract
The increasing use of the herbicide mixture of glyphosate, dicamba and 2-4-D to deal with glyphosate-resistant weeds raises concerns regarding human health and environmental risks. This study aimed to evaluate the effects of developmental exposure to glyphosate and a herbicide mixture containing glyphosate, dicamba and 2-4-D on rat dams' kidney and thyroid function and offspring's health. Pregnant Wistar rats were exposed from day-6 of gestation till weaning to regulatory relevant doses of glyphosate corresponding to the European Union (EU) acceptable daily intake (ADI; 0.5 mg/kg bw/day), and the no-observed-adverse-effect level (NOAEL; 50 mg/kg bw/day), and to a mixture of glyphosate, dicamba and 2,4-D all at the EU ADI (0.5, 0.002 and 0.3 mg/kg bw/day) respectively. After weaning the dams were sacrificed and blood and organs were collected. The pups' health was assessed by measuring viability, gestational and anogenital indices. Perinatal exposure to GLY alone and the herbicide mixture resulted in anti-androgenic effects in male offspring. In dams, exposure to glyphosate resulted in kidney glomerular and tubular dysfunction as well as increased thyroid hormone levels in a dose-dependent manner. Furthermore, exposure to the herbicide mixture resulted in effects similar to those observed with glyphosate at the NOAEL, suggesting at least an additive effect of the herbicide mixture at doses individually considered safe for humans.
Collapse
Affiliation(s)
- Anca Oana Docea
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, Craiova, Romania.
| | - Andrei Eugen Cirstea
- Doctoral School, University of Medicine and Pharmacy of Craiova, Craiova, Romania.
| | - Liliana Cercelaru
- Department of Anatomy and Embryology, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania
| | - Andrei Ioan Drocas
- Department of Urology, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania
| | - Viorica Dinca
- Doctoral School, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Robin Mesnage
- King's College London, Gene Expression and Therapy Group, Department of Medical and Molecular Genetics, Faculty of Life Sciences and Medicine, Guy's Hospital, London, SE1 9RT, UK
| | - Cristina Marginean
- Department of Internal Medicine, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania
| | - Antonia Radu
- Department of Pharmaceutical Botany, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania.
| | - Dragos George Popa
- Department of Plastic Surgery, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania.
| | - Otilia Rogoveanu
- Department of Physical Medicine and Rehabilitation, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania.
| | - Radu Mitrut
- Department of Cardiology, University and Emergency Hospital, 050098, Bucharest, Romania
| | - Michael N Antoniou
- King's College London, Gene Expression and Therapy Group, Department of Medical and Molecular Genetics, Faculty of Life Sciences and Medicine, Guy's Hospital, London, SE1 9RT, UK
| | - Aristidis Tsatsakis
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, 71003, Heraklion, Greece
| | - Antonio F Hernández
- Department of Legal Medicine and Toxicology, University of Granada School of Medicine, Granada, Spain; Health Research Institute of Granada (ibs. GRANADA), Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| |
Collapse
|
3
|
Biţă A, Scorei IR, Ciocîlteu MV, Nicolaescu OE, Pîrvu AS, Bejenaru LE, Rău G, Bejenaru C, Radu A, Neamţu J, Mogoşanu GD, Benner SA. Nicotinamide Riboside, a Promising Vitamin B 3 Derivative for Healthy Aging and Longevity: Current Research and Perspectives. Molecules 2023; 28:6078. [PMID: 37630330 PMCID: PMC10459282 DOI: 10.3390/molecules28166078] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/09/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023] Open
Abstract
Many studies have suggested that the oxidized form of nicotinamide adenine dinucleotide (NAD+) is involved in an extensive spectrum of human pathologies, including neurodegenerative disorders, cardiomyopathy, obesity, and diabetes. Further, healthy aging and longevity appear to be closely related to NAD+ and its related metabolites, including nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN). As a dietary supplement, NR appears to be well tolerated, having better pharmacodynamics and greater potency. Unfortunately, NR is a reactive molecule, often unstable during its manufacturing, transport, and storage. Recently, work related to prebiotic chemistry discovered that NR borate is considerably more stable than NR itself. However, immediately upon consumption, the borate dissociates from the NR borate and is lost in the body through dilution and binding to other species, notably carbohydrates such as fructose and glucose. The NR left behind is expected to behave pharmacologically in ways identical to NR itself. This review provides a comprehensive summary (through Q1 of 2023) of the literature that makes the case for the consumption of NR as a dietary supplement. It then summarizes the challenges of delivering quality NR to consumers using standard synthesis, manufacture, shipping, and storage approaches. It concludes by outlining the advantages of NR borate in these processes.
Collapse
Affiliation(s)
- Andrei Biţă
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania; (A.B.); (L.E.B.); (G.D.M.)
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., 31B Dunării Street, 207465 Podari, Dolj County, Romania; (M.V.C.); (G.R.); (J.N.)
| | - Ion Romulus Scorei
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., 31B Dunării Street, 207465 Podari, Dolj County, Romania; (M.V.C.); (G.R.); (J.N.)
| | - Maria Viorica Ciocîlteu
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., 31B Dunării Street, 207465 Podari, Dolj County, Romania; (M.V.C.); (G.R.); (J.N.)
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Oana Elena Nicolaescu
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania;
| | - Andreea Silvia Pîrvu
- Department of Biochemistry, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania;
| | - Ludovic Everard Bejenaru
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania; (A.B.); (L.E.B.); (G.D.M.)
| | - Gabriela Rău
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., 31B Dunării Street, 207465 Podari, Dolj County, Romania; (M.V.C.); (G.R.); (J.N.)
- Department of Organic Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Cornelia Bejenaru
- Department of Pharmaceutical Botany, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania; (C.B.); (A.R.)
| | - Antonia Radu
- Department of Pharmaceutical Botany, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania; (C.B.); (A.R.)
| | - Johny Neamţu
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., 31B Dunării Street, 207465 Podari, Dolj County, Romania; (M.V.C.); (G.R.); (J.N.)
- Department of Physics, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - George Dan Mogoşanu
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania; (A.B.); (L.E.B.); (G.D.M.)
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., 31B Dunării Street, 207465 Podari, Dolj County, Romania; (M.V.C.); (G.R.); (J.N.)
| | - Steven A. Benner
- Foundation for Applied Molecular Evolution (FfAME), 13709 Progress Avenue, Room N112, Alachua, FL 32615, USA;
| |
Collapse
|
4
|
Biţă A, Scorei IR, Bălşeanu TA, Ciocîlteu MV, Bejenaru C, Radu A, Bejenaru LE, Rău G, Mogoşanu GD, Neamţu J, Benner SA. New Insights into Boron Essentiality in Humans and Animals. Int J Mol Sci 2022; 23:ijms23169147. [PMID: 36012416 PMCID: PMC9409115 DOI: 10.3390/ijms23169147] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/12/2022] [Accepted: 08/14/2022] [Indexed: 11/19/2022] Open
Abstract
Boron (B) is considered a prebiotic chemical element with a role in both the origin and evolution of life, as well as an essential micronutrient for some bacteria, plants, fungi, and algae. B has beneficial effects on the biological functions of humans and animals, such as reproduction, growth, calcium metabolism, bone formation, energy metabolism, immunity, and brain function. Naturally organic B (NOB) species may become promising novel prebiotic candidates. NOB-containing compounds have been shown to be essential for the symbiosis between organisms from different kingdoms. New insights into the key role of NOB species in the symbiosis between human/animal hosts and their microbiota will influence the use of natural B-based colon-targeting nutraceuticals. The mechanism of action (MoA) of NOB species is related to the B signaling molecule (autoinducer-2-borate (AI-2B)) as well as the fortification of the colonic mucus gel layer with NOB species from B-rich prebiotic diets. Both the microbiota and the colonic mucus gel layer can become NOB targets. This paper reviews the evidence supporting the essentiality of the NOB species in the symbiosis between the microbiota and the human/animal hosts, with the stated aim of highlighting the MoA and targets of these species.
Collapse
Affiliation(s)
- Andrei Biţă
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., 31B Dunării Street, 207465 Podari, Romania
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Ion Romulus Scorei
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., 31B Dunării Street, 207465 Podari, Romania
- Correspondence: ; Tel.: +40-351-407-543
| | - Tudor Adrian Bălşeanu
- Department of Physiology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Maria Viorica Ciocîlteu
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Cornelia Bejenaru
- Department of Pharmaceutical Botany, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Antonia Radu
- Department of Pharmaceutical Botany, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Ludovic Everard Bejenaru
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Gabriela Rău
- Department of Organic Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - George Dan Mogoşanu
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Johny Neamţu
- Department of Physics, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Steven A. Benner
- Foundation for Applied Molecular Evolution (FfAME), 13709 Progress Avenue, Room N112, Alachua, FL 32615, USA
| |
Collapse
|
5
|
Mora-Ramos ME, Vinasco JA, Laroze D, Radu A, Restrepo RL, Heyn C, Tulupenko V, Hieu NN, Phuc HV, Ojeda JH, Morales AL, Duque CA. Electronic structure of vertically coupled quantum dot-ring heterostructures under applied electromagnetic probes. A finite-element approach. Sci Rep 2021; 11:4015. [PMID: 33597625 PMCID: PMC7889662 DOI: 10.1038/s41598-021-83583-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 12/03/2020] [Accepted: 02/04/2021] [Indexed: 11/21/2022] Open
Abstract
We theoretically investigate the electron and hole states in a semiconductor quantum dot-quantum ring coupled structure, inspired by the recent experimental report by Elborg and collaborators (2017). The finite element method constitutes the numerical technique used to solve the three-dimensional effective mass equation within the parabolic band approximation, including the effects of externally applied electric and magnetic fields. Initially, the features of conduction electron states in the proposed system appear discussed in detail, under different geometrical configurations and values of the intensity of the aforementioned electromagnetic probes. In the second part, the properties of an electron-hole pair confined within the very kind of structure reported in the reference above are investigated via a model that tries to reproduce as close as possible the developed profile. In accordance, we report on the energies of confined electron and hole, affected by the influence of an external electric field, revealing the possibility of field-induced separate spatial localization, which may result in an indirect exciton configuration. In relation with this fact, we present a preliminary analysis of such phenomenon via the calculation of the Coulomb integral.
Collapse
Affiliation(s)
- M E Mora-Ramos
- Centro de Investigación en Ciencias-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, CP 62209 Cuernavaca, Morelos, Mexico.
| | - J A Vinasco
- Instituto de Alta Investigación, CEDENNA, Universidad de Tarapacá, Casilla 7D, Arica, Chile
| | - D Laroze
- Instituto de Alta Investigación, CEDENNA, Universidad de Tarapacá, Casilla 7D, Arica, Chile
| | - A Radu
- Department of Physics, University Politehnica of Bucharest, 313 Splaiul Independenţei, Bucharest, 060042, Romania
| | | | - Christian Heyn
- Center for Hybrid Nanostructures (CHyN), University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - V Tulupenko
- Donbass State Engineering Academy, Academichna str. 62, Kramatorsk, 84313, Ukraine.,Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Nguyen N Hieu
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam.,Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Viet Nam
| | - Huynh V Phuc
- Division of Theoretical Physics, Dong Thap University, Cao Lanh, 870000, Viet Nam
| | - J H Ojeda
- Grupo de Física de Materiales, Facultad de Ciencias, Universidad Pedagógica y Tecnológica de Colombia, Tunja, Boyacá, Colombia
| | - A L Morales
- Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - C A Duque
- Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| |
Collapse
|
6
|
Radu A, Bejenaru C, Ţolea I, Maranduca MA, Brănişteanu DC, Bejenaru LE, Petrariu FD, Stoleriu G, Brănişteanu DE. Immunohistochemical study of CD117 in various cutaneous melanocytic lesions. Exp Ther Med 2020; 21:78. [PMID: 33363589 PMCID: PMC7725021 DOI: 10.3892/etm.2020.9510] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 09/09/2020] [Accepted: 10/09/2020] [Indexed: 12/27/2022] Open
Abstract
The aim of the present study was to carried out a comparative immunohistochemical evaluation of CD117 (c-Kit), a biomarker that evaluates both tumor progression and prognosis, in different melanocytic lesions, to emphasize the significance of this biomarker in malignant melanoma (MM). The study was performed on 55 cases, represented by a control group, which included 5 cases of simple nevi and 5 cases of dysplastic nevi, as well as a study group consisting of 35 cases of primary MM and 10 metastases (one intestinal, 3 cutaneous - one satellite and two distant as well as 6 in the lymph nodes). The study group included 15 cases of superficial spreading melanoma (SSM), 10 cases of nodular melanoma (NM), 3 lentigo maligna melanoma (LMM), 3 cases of acral lentiginous melanoma (ALM) and 4 cases of amelanotic MM. CD117 was found to be massively involved in the process of tumorigenesis of cutaneous malignancies, being immunohistochemically undetectable in benign neural lesions, but densely expressed in dysplastic lesions and in situ melanoma areas. In invasive cutaneous MMs, CD117 expression tended to decrease with neoplasia progression proceding into the tumorigenic, vertical growth phase, being lower in the profound dermal component of tumors and in nodular MMs. To eliminate the epidermal barriers and gain a proliferative advantage to allow the transition to the vertical growth phase, it seems that MM should lose expression of c-Kit. Cutaneous metastases were found to express CD117 at a level comparable to their primary tumors, suggesting that other mechanisms interfere directly with the metastatic process and not loss of c-Kit expression by itself. CD117 overexpression in cutaneous melanocytic lesions correlates significantly with increased immunostaining intensity, suggesting that the immunohistochemical evaluation of CD117 may be a good method for screening patients, who could benefit from personalized therapy with tyrosine kinase inhibitors.
Collapse
Affiliation(s)
- Antonia Radu
- Department of Pharmaceutical Botany, University of Medicine and Pharmacy of Craiova, Craiova 200349, Romania
| | - Cornelia Bejenaru
- Department of Pharmaceutical Botany, University of Medicine and Pharmacy of Craiova, Craiova 200349, Romania
| | - Ion Ţolea
- Department of Dermatology, University of Medicine and Pharmacy of Craiova, Craiova 200349, Romania
| | - Minela Aida Maranduca
- Department of Physiology, 'Grigore T. Popa' University of Medicine and Pharmacy, Iasi 700115, Romania
| | | | - Ludovic Everard Bejenaru
- Department of Pharmacognosy and Phytotherapy, University of Medicine and Pharmacy of Craiova, Craiova 200349, Romania
| | - Florin Dumitru Petrariu
- Department of Preventive Medicine and Interdisciplinarity, 'Grigore T. Popa' University of Medicine and Pharmacy, Iasi 700115, Romania
| | - Gabriela Stoleriu
- Clinical Department, Faculty of Medicine and Pharmacy, 'Dunarea de Jos' University, Galati 800008, Romania
| | - Daciana Elena Brănişteanu
- Department of Dermatology, 'Grigore T. Popa' University of Medicine and Pharmacy, Iasi 700115, Romania
| |
Collapse
|
7
|
Neamţu AS, Biţă A, Scorei IR, Rău G, Bejenaru LE, Bejenaru C, Rogoveanu OC, Oancea CN, Radu A, Pisoschi CG, Neamţu J, Mogoşanu GD. Simultaneous quantitation of nicotinamide riboside and nicotinamide in dietary supplements via HPTLC–UV with confirmation by online HPTLC–ESI–MS. ACTA CHROMATOGR 2020. [DOI: 10.1556/1326.2019.00600] [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: 11/19/2022]
Abstract
The identification and quantitation of nicotinamide riboside (NAR) and its main related compound (nicotinamide) were achieved using high-performance thin-layer chromatography (HPTLC)–ultraviolet (UV) densitometry with confirmation by online electrospray ionization (ESI)–mass spectrometry (MS). As the stationary phase, HPTLC Si 60 F254 glass plates were employed; the mobile phase was ethanol–1 M ammonium acetate–formic acid (7:1:0.1, v/v/v). No derivatization was applied, and UV densitometry was performed in the absorbance mode (270 nm). The method was validated by specificity, linearity, accuracy, precision, and robustness.
Collapse
Affiliation(s)
- Andreea Silvia Neamţu
- 1 Doctoral School, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Andrei Biţă
- 2 Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Ion Romulus Scorei
- 3 BioBoron Research Institute, S.C. Natural Research S.R.L., 31B Dunării Street, 207465 Podari Commune, Dolj County, Romania
| | - Gabriela Rău
- 4 Department of Organic Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Ludovic Everard Bejenaru
- 2 Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Cornelia Bejenaru
- 5 Department of Pharmaceutical Botany, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Otilia-Constantina Rogoveanu
- 6 Department of Physical Medicine and Rehabilitation, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Carmen Nicoleta Oancea
- 1 Doctoral School, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Antonia Radu
- 5 Department of Pharmaceutical Botany, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Cătălina Gabriela Pisoschi
- 7 Department of Biochemistry, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - Johny Neamţu
- 8 Department of Physics, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| | - George Dan Mogoşanu
- 2 Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Dolj County, Romania
| |
Collapse
|
8
|
Martin C, Ait Boudaoud A, Radu A, Barsamian C, Larger E, Ngo S, chatenoud L, Czernichow S, Rives-Lange C, Carette C. Positivité des anticorps anti GAD et/ou IA2 dans une cohorte de patients diabétiques et obèses sévères éligibles à une chirurgie bariatrique. NUTR CLIN METAB 2020. [DOI: 10.1016/j.nupar.2020.02.215] [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: 10/24/2022]
|
9
|
Mora-Ramos ME, El Aouami A, Feddi E, Radu A, Restrepo RL, Vinasco JA, Morales AL, Duque CA. Donor impurity energy and optical absorption in spherical sector quantum dots. Heliyon 2020; 6:e03194. [PMID: 31989050 PMCID: PMC6970157 DOI: 10.1016/j.heliyon.2020.e03194] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 10/20/2019] [Revised: 12/05/2019] [Accepted: 01/07/2020] [Indexed: 12/04/2022] Open
Abstract
The properties of the conduction band energy states of an electron interacting with a donor impurity center in spherical sector-shaped GaAs-Al0.3Ga0.7As quantum dots are theoretically investigated. The study is performed within the framework of the effective mass approximation through the numerical solution of the 3D Schrödinger equation for the envelope function via the finite element method. The modifications undergone by the spectrum due to the changes in the conical structure geometry (radius and apical angle) as well as in the position of the donor atom are discussed. With the information regarding electron states the linear optical absorption coefficient associated with transition between confined energy levels is evaluated and its features are discussed. The comparison of results obtained within the considered model with available experimental data in GaAs truncated-whisker-like quantum dots shows very good agreement. Besides, our simulation leads to identify the lowest energy photoluminescence peak as donor-related, instead of being associated to acceptor atoms, as claimed after experimental measurement (Hiruma et al. (1995) [14]). Also, a checking of our numerical approach is performed by comparing with analytical solutions to the problem of a spherical cone-shaped GaN with infinite confinement and donor impurity located at the cone apex. Coincidence is found to be remarkable.
Collapse
Affiliation(s)
- M E Mora-Ramos
- Centro de Investigación en Ciencias, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, CP 62209, Cuernavaca, Morelos, Mexico.,Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - A El Aouami
- Laboratoire de Matiére Condenssée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Morocco
| | - E Feddi
- Laboratoire de Matiére Condenssée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Morocco
| | - A Radu
- Department of Physics, "Politehnica" University of Bucharest, 313 Splaiul Independenţei, Bucharest, RO-060042, Romania
| | | | - J A Vinasco
- Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - A L Morales
- Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - C A Duque
- Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| |
Collapse
|
10
|
Oprescu E, Enascuta C, Galan A, Radu A, Isopencu G, Lavric V. Extraction of valuable compounds from microalgal biomass. Operating conditions and yield. J Biotechnol 2019. [DOI: 10.1016/j.jbiotec.2019.05.139] [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: 11/28/2022]
|
11
|
Vinasco JA, Radu A, Kasapoglu E, Restrepo RL, Morales AL, Feddi E, Mora-Ramos ME, Duque CA. Effects of Geometry on the Electronic Properties of Semiconductor Elliptical Quantum Rings. Sci Rep 2018; 8:13299. [PMID: 30185886 PMCID: PMC6125586 DOI: 10.1038/s41598-018-31512-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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: 04/12/2018] [Accepted: 08/13/2018] [Indexed: 11/09/2022] Open
Abstract
The electronic states in GaAs-AlxGa1-xAs elliptically-shaped quantum rings are theoretically investigated through the numerical solution of the effective mass band equation via the finite element method. The results are obtained for different sizes and geometries, including the possibility of a number of hill-shaped deformations that play the role of either connected or isolated quantum dots (hills), depending on the configuration chosen. The quantum ring transversal section is assumed to exhibit three different geometrical symmetries - squared, triangular and parabolic. The behavior of the allowed confined states as functions of the cross-section shape, the ring dimensions, and the number of hills-like structures are discussed in detail. The effective energy bandgap (photoluminescence peak with electron-hole correlation) is reported as well, as a function of the Al molar fraction.
Collapse
Affiliation(s)
- J A Vinasco
- Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - A Radu
- Department of Physics, "Politehnica" University of Bucharest, 313 Splaiul Independenţei, Bucharest, RO, 060042, Romania
| | - E Kasapoglu
- Faculty of Science, Department of Physics, Cumhuriyet University, 58140, Sivas, Turkey
| | | | - A L Morales
- Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - E Feddi
- Laboratoire de Matière Condensée et Sciences Interdisciplinaires (LaMCScI) Group of Optoelectronic of Semiconductors and Nanomaterials ENSET, Mohammed V University in Rabat, Rabat, Morocco
| | - M E Mora-Ramos
- Centro de Investigación en Ciencias-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, CP 62209, Cuernavaca, Morelos, Mexico
| | - C A Duque
- Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia.
| |
Collapse
|
12
|
Schazmann B, Demey S, Ali ZW, Plissart MS, Brennan E, Radu A. Robust, Bridge-less Ion-selective Electrodes with Significantly Reduced Need for Pre- and Post-application Handling. ELECTROANAL 2018. [DOI: 10.1002/elan.201700716] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- B. Schazmann
- School of Chemical and Pharmaceutical Sciences; Dublin Institute of Technology; Kevin Street Dublin 8 Ireland
| | - S. Demey
- School of Chemical and Pharmaceutical Sciences; Dublin Institute of Technology; Kevin Street Dublin 8 Ireland
| | - Z. Waqar Ali
- School of Chemical and Pharmaceutical Sciences; Dublin Institute of Technology; Kevin Street Dublin 8 Ireland
| | - M-S. Plissart
- School of Chemical and Pharmaceutical Sciences; Dublin Institute of Technology; Kevin Street Dublin 8 Ireland
| | - E. Brennan
- School of Chemical and Pharmaceutical Sciences; Dublin Institute of Technology; Kevin Street Dublin 8 Ireland
| | - A. Radu
- Lennard-Jones Laboratories, Birchall Centre; Keele University; Keele Staffordshire ST5 5BG United Kingdom
| |
Collapse
|
13
|
Bogdan S, Rudzik R, Iorgulescu C, Radu A, Deaconu A, Dobreanu D, Vatasescu R. P466Successful radiofrequency ablation of Mahaim fiber with atypical anterior insertion using remote magnetic navigation system. Europace 2018. [DOI: 10.1093/europace/euy015.275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Bogdan
- Emergency Clinical Hospital Floreasca, Cardiology, Bucharest, Romania
| | - R Rudzik
- Institute of Cardiovascular Diseases of Targu Mures, Cardiology, Targu Mures, Romania
| | - C Iorgulescu
- Emergency Clinical Hospital Floreasca, Cardiology, Bucharest, Romania
| | - A Radu
- Emergency Clinical Hospital Floreasca, Cardiology, Bucharest, Romania
| | - A Deaconu
- Emergency Clinical Hospital Floreasca, Cardiology, Bucharest, Romania
| | - D Dobreanu
- Institute of Cardiovascular Diseases of Targu Mures, Cardiology, Targu Mures, Romania
| | - R Vatasescu
- Emergency Clinical Hospital Floreasca, Cardiology, Bucharest, Romania
| |
Collapse
|
14
|
Radu A, Horan M. Implant Success Rate in Head and Neck Pathology Patients Reconstructed with a Free Flap Graft. J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.joms.2017.07.079] [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: 11/24/2022]
|
15
|
Radu A, Fleckenstein C, Horan M. Patient Satisfaction in Shared Versus Individual Medical Appointments for Third Molar Surgery. J Oral Maxillofac Surg 2016. [DOI: 10.1016/j.joms.2016.06.058] [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: 11/25/2022]
|
16
|
Veronesi P, Origi M, Pappalardo V, Zuliani W, Sahoo M, Radu V, Radu A, Ene S, Lica M, Nahabet E, Stulberg J, Majumbder A, Sanchez E, Novitsky Y, Morales-Conde S, Sanchez-Ramirez M, Alarcón I, Barranco A, Gómez-Menchero J, Suárez JM, Bellido J, Socas M, López-Quindós P, García-Ureña MA, Aguilera A, Blázquez L, Cruz A, Galván A, González E, Jiménez C, López-Monclús J, Melero D, Palencia N, Robin A, Becerra R, Lopez-Monclus J, Garcia-Ureña MA, Blazquez-Hernando LA, Melero-Montes DA, Jimenez-Ceinos C, Becerra-Ortiz R, Lopez-Quindos P, Galvan A, García-Ureña M, Movilla AS, Blázquez D, Montes DM, Valle de Lersundi AR, Cidoncha AC, Pavía AG, Quindós PL, García M, García S, Di Maio V, Marte G, Ferronetti A, Canfora A, Mauriello C, Bottino V, Maida P, Berta R, Bellini R, Mancini R, Moretto C, Anselmino M, Cumbo P, Roberti L. Topic: Incisional Hernia - "Difficult case" as specialistic case: real loss of substance, multi recurrences, infections, fistulas, lombocel, burst abdomen, reconstruction of the entire wall. Hernia 2015; 19 Suppl 1:S350-3. [PMID: 26518844 DOI: 10.1007/bf03355389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- P Veronesi
- Humanitas Mater Domini Clinical Institute, Castellanza, Italy
| | | | | | | | - M Sahoo
- S.C.B Medical College, Cuttack, India
| | - V Radu
- Life Memorial Hospital, Bucharest, Romania
| | | | | | | | - E Nahabet
- University Hospitals Case Medical Center, Cleveland, USA
| | | | | | | | | | | | | | - I Alarcón
- Hospital Universitario Virgen del Rocio, Sevilla, Spain
| | - A Barranco
- Hospital Universitario Virgen del Rocio, Sevilla, Spain
| | | | - J M Suárez
- Hospital Quirón-Sagrado Corazón, Sevilla, Spain
| | - J Bellido
- Hospital Quirón-Sagrado Corazón, Sevilla, Spain
| | - M Socas
- Hospital Universitario Virgen del Rocio, Sevilla, Spain
| | | | | | - A Aguilera
- Department of Surgery, Henares Hospital, Madrid, Spain.,Hospital Universitario del Henares, Coslada, Spain
| | - L Blázquez
- Department of Surgery, Henares Hospital, Madrid, Spain
| | - A Cruz
- Department of Surgery, Henares Hospital, Madrid, Spain
| | - A Galván
- Department of Surgery, Henares Hospital, Madrid, Spain.,Hospital Universitario del Henares, Coslada, Spain
| | - E González
- Department of Surgery, Henares Hospital, Madrid, Spain.,Hospital Universitario del Henares, Coslada, Spain
| | - C Jiménez
- Department of Surgery, Henares Hospital, Madrid, Spain
| | - J López-Monclús
- Department of Surgery, Henares Hospital, Madrid, Spain.,Hospital Universitario del Henares, Coslada, Spain
| | - D Melero
- Department of Surgery, Henares Hospital, Madrid, Spain
| | - N Palencia
- Department of Surgery, Henares Hospital, Madrid, Spain.,General Surgery Department, Henares Hospital, Coslada, Spain.,Hospital Universitario del Henares, Coslada, Spain
| | - A Robin
- Department of Surgery, Henares Hospital, Madrid, Spain.,General Surgery Department, Henares Hospital, Coslada, Spain
| | - R Becerra
- Department of Surgery, Henares Hospital, Madrid, Spain.,Hospital Universitario del Henares, Coslada, Spain
| | - J Lopez-Monclus
- General Surgery Department, Henares Hospital, Coslada, Spain
| | | | | | | | | | - R Becerra-Ortiz
- General Surgery Department, Henares Hospital, Coslada, Spain
| | - P Lopez-Quindos
- General Surgery Department, Henares Hospital, Coslada, Spain
| | - A Galvan
- General Surgery Department, Henares Hospital, Coslada, Spain
| | | | | | - D Blázquez
- Hospital Universitario del Henares, Coslada, Spain
| | | | | | | | | | | | - M García
- Hospital Universitario del Henares, Coslada, Spain
| | - S García
- Hospital Universitario del Henares, Coslada, Spain
| | | | - G Marte
- Ospedale Evangelico Villa Betania, Napoli, Italy
| | - A Ferronetti
- Ospedale Evangelico Villa Betania, Napoli, Italy
| | - A Canfora
- Ospedale Evangelico Villa Betania, Napoli, Italy
| | - C Mauriello
- Ospedale Evangelico Villa Betania, Napoli, Italy
| | - V Bottino
- Ospedale Evangelico Villa Betania, Napoli, Italy
| | - P Maida
- Ospedale Evangelico Villa Betania, Napoli, Italy
| | - R Berta
- Bariatric and Metabolic Surgery Unit, University Hospital, Pisa, Italy
| | | | | | | | | | - P Cumbo
- Struttura complessa Chirurgia Generale, San Lorenzo di Carmagnola, Italy
| | - L Roberti
- Struttura complessa Chirurgia Generale, San Lorenzo di Carmagnola, Italy
| |
Collapse
|
17
|
Pack S, Radu A, Flores-Hidalgo A, Altay M, Baur D, Quereshy F. Medication-Related Osteonecrosis of the Jaw: An Institution's Experience. J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.joms.2015.06.059] [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: 10/23/2022]
|
18
|
Coculescu BI, Coculescu EC, Radu A, Petrescu L, Purcărea VL. Market policy as an innovative element of marketing in the Romanian healthcare services - an approach focused on the patient. J Med Life 2015; 8:440-3. [PMID: 26664466 PMCID: PMC4656948] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The orientation towards one of the marketing policies with a major impact in organizations providing healthcare services, requires a careful analysis of the needs and aspirations of customers, targeting those patients whose needs the service organization can achieve through the existing resources at the respective health facility, finding the most effective way of achieving benefits associated with reduced costs to maximizing profits, placing the offers for medical services required by the patients on the market, as well as promptly reacting and acting to the changes of health services market which is constantly evolving through a flexible organizing and functioning structure, connected to the financial needs of the patients.
Collapse
Affiliation(s)
- BI Coculescu
- “Titu Maiorescu” University, Faculty of Medicine; Centre of Preventive Medicine, Ministry of National Defence, Bucharest, Romania
| | - EC Coculescu
- “Carol Davila” University of Medicine and Pharmacy, Faculty of Dental Medicine, Bucharest, Romania
| | - A Radu
- “Carol Davila” University of Medicine and Pharmacy, Faculty of Medicine, Bucharest, Romania
| | - L Petrescu
- “Carol Davila” University of Medicine and Pharmacy, Faculty of Medicine, Bucharest, Romania
| | - VL Purcărea
- “Carol Davila” University of Medicine and Pharmacy, Faculty of Medicine, Bucharest, Romania
| |
Collapse
|
19
|
Coculescu EC, Radu A, Coculescu BI. Burning mouth syndrome: a review on diagnosis and treatment. J Med Life 2014; 7:512-5. [PMID: 25713611 PMCID: PMC4316128] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Accepted: 10/25/2014] [Indexed: 10/25/2022] Open
Abstract
Burning mouth syndrome (BMS) is defined as a chronic pain condition characterized by a burning sensation in the clinically healthy oral mucosa. It is difficult to diagnose BMS because there is a discrepancy between the severity, extensive objective pain felt by the patient and the absence of any clinical changes of the oral mucosa. This review presents some aspects of BMS, including its clinical diagnosis, classification, differential diagnosis, general treatment, evolution and prognosis.
Collapse
Affiliation(s)
- EC Coculescu
- Department of Oral Medicine, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, Bucharest
| | - A Radu
- "Carol Davila” University of Medicine and Pharmacy, Bucharest, Academy of Economic Studies, Bucharest
| | - BI Coculescu
- Discipline of Microbiology, Faculty of Medicine, “Titu Maiorescu” University, Bucharest
| |
Collapse
|
20
|
Abstract
BACKGROUND Decreased function of the exocrine pancreas is frequent in patients with diabetes. Our aim was to investigate clinical correlates of pancreatic exocrine failure in patients with diabetes. PATIENTS AND METHODS We investigated exocrine function by assaying both elastase-1 concentration and chymotrypsin activity in 667 patients. We conducted separate analysis on patients with Type 1 diabetes and patients with Type 2 diabetes. Patients were separated into three groups according to whether both elastase-1 concentration and chymotrypsin activity were normal, or one or both were altered. RESULTS A total of 667 consecutive patients were analysed, including 195 with Type 1 and 472 with Type 2 diabetes. Elastase-1 concentration was <200 μg/g in 23% of the patients. Chymotrypsin activity was <6 U/g in 26% of the patients. In 66% of the patients elastase-1 concentration was >200 ug/g and chymotrypsin activity >6 U/g. One test was below threshold in 19%, both in 15%. In patients with Type 1 diabetes, the three groups defined by results of elastase-1 concentration and chymotrypsin activity differed with regard to duration of diabetes and prevalence of glutamic acid decarboxylase antibodies, but not BMI or HbA(1c) , or prevalence of retinopathy, neuropathy, nephropathy or vascular disease. In patients with Type 2 diabetes, the three groups differed with regard to BMI, use of insulin and vascular disease, but not known duration. CONCLUSION Factors associated with pancreatic exocrine failure differ in patients with Type 1 diabetes compared with patients with type 2 diabetes. In patients with Type 2 diabetes, association of decreased pancreatic exocrine function with BMI and vascular disease suggests a role of pancreatic arteriopathy.
Collapse
Affiliation(s)
- E Larger
- Laboratoire de coprologie, Hôtpital de la Pitié-Salpétrière, APHP, Paris, France.
| | | | | | | | | | | | | |
Collapse
|
21
|
Endo M, Zoltick PW, Radu A, Qiujie J, Matsui C, Marinkovich PM, McGrath J, Tamai K, Uitto J, Flake AW. Early intra-amniotic gene transfer using lentiviral vector improves skin blistering phenotype in a murine model of Herlitz junctional epidermolysis bullosa. Gene Ther 2012; 19:561-9. [PMID: 21938019 PMCID: PMC6541916 DOI: 10.1038/gt.2011.135] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 08/02/2011] [Accepted: 08/08/2011] [Indexed: 12/27/2022]
Abstract
Mutations of the LAMB3 gene cause a lethal form of junctional epidermolysis bullosa (JEB). We hypothesized that early intra-amniotic gene transfer in a severe murine model of JEB would improve or correct the skin phenotype. Time-dated fetuses from heterozygous LAMB3(IAP) breeding pairs underwent ultrasound guided intra-amniotic injection of lentiviral vector encoding the murine LAMB3 gene at embryonic day 8 (E8). Gene expression was monitored by immunohistochemistry. The transgenic laminin-β3 chain was shown to assemble with its endogenous partner chains, resulting in detectable amounts of laminin-332 in the basement membrane zone of skin and mucosa. Ultrastructually, the restoration of ∼60% of hemidesmosomal structures was also noted. Although we could correct the skin phenotype in 11.9% of homozygous LAMB3(IAP) mice, none survived beyond 48 h. However, skin transplants from treated E18 homozygous LAMB3(IAP) fetuses maintained normal appearance for 6 months with persistence of normal assembly of laminin-332. These results demonstrate for the first time long-term phenotypic correction of the skin pathology in a severe model of JEB by in vivo prenatal gene transfer. Although survival remained limited due to the limitations of this mouse model, this study supports the potential for treatment of JEB by prenatal gene transfer.
Collapse
Affiliation(s)
- M Endo
- Department of Surgery, The Children’s Center for Fetal Research, The Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Abramson Research Center, Philadelphia, PA, USA
| | - PW Zoltick
- Department of Surgery, The Children’s Center for Fetal Research, The Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Abramson Research Center, Philadelphia, PA, USA
| | - A Radu
- Department of Surgery, The Children’s Center for Fetal Research, The Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Abramson Research Center, Philadelphia, PA, USA
| | - J Qiujie
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - C Matsui
- Department of Dermatology, University of Toyama, Toyama, Japan
| | - PM Marinkovich
- Department of Medical Dermatology, Stanford University, Redwood City, CA, USA
| | - J McGrath
- Division of Genetics and Molecular Medicine, Genetic Skin Disease Group, St John’s Institute of Dermatology, The Guy’s, King’s College, and St Thomas’ School of Medicine, London, UK
| | - K Tamai
- Division of Gene Therapy Science, Osaka University Graduate School of Medicine, Osaka, Japan
| | - J Uitto
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - AW Flake
- Department of Surgery, The Children’s Center for Fetal Research, The Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Abramson Research Center, Philadelphia, PA, USA
| |
Collapse
|
22
|
Chen Y, Kalir E, Priedigkeit N, Kalir T, Liu Y, Hu W, Sood A, Radu A, Dottino P, Martignetti J. Follicle-stimulating hormone receptor expression analysis in serous ovarian tumors suggests a disease continuum from low malignant potential to low-grade carcinoma. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.348] [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: 10/28/2022]
|
23
|
Endo M, Zoltick PW, Radu A, Jiang Q, Matsui C, Marinkovich PM, McGrath J, Tamai K, Uitto J, Flake AW. Erratum: Early intra-amniotic gene transfer using lentiviral vector improves skin blistering phenotype in a murine model of Herlitz junctional epidermolysis bullosa. Gene Ther 2011. [DOI: 10.1038/gt.2011.174] [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: 11/09/2022]
|
24
|
Andersson T, Magnusson A, Bryngelsson IL, Frobert O, Henriksson KM, Edvardsson N, Poci D, Polovina M, Potpara T, Licina M, Mujovic N, Kocijancic A, Simic D, Ostojic MC, Providencia RA, Botelho A, Trigo J, Nascimento J, Quintal N, Mota P, Leitao-Marques AM, Bosch RF, Kirch W, Rosin L, Willich SN, Pittrow D, Bonnemeier H, Valenza MC, Martin L, Munoz Casaubon T, Valenza G, Botella M, Serrano M, Valenza B, Cabrera I, Anderson K, Benzaquen BS, Koziolova N, Nikonova J, Shilova Y, Scherr D, Narayan S, Wright M, Krummen D, Jadidi A, Jais P, Haissaguerre M, Hocini M, Hunter R, Liu Y, Lu Y, Wang W, Schilling RJ, Bernstein S, Wong B, Rooke R, Vasquez C, Shah R, Rosenberg S, Chinitz L, Morley G, Bashir Choudhary M, Holmqvist F, Carlson J, Nilsson HJ, Platonov PG, Jadidi AS, Cochet H, Miyazaki S, Shah AJ, Scherr D, Marrouche N, Haissaguerre M, Jais P, Calvo N, Nadal M, Andreu D, Tamborero D, Diaz FE, Berruezo A, Brugada J, Mont L, Fichtner S, Hessling G, Estner HL, Jilek C, Reents T, Ammar S, Wu J, Deisenhofer I, Nakanishi H, Kashiwase K, Hirata A, Wada M, Ueda Y, Skoda J, Neuzil P, Popelova J, Petru J, Sediva L, Lavergne T, Le Heuzey JY, Mousseaux E, Hersi A, Alhabib K, Alfaleh H, Sulaiman K, Almahmeed W, Alsuwidi J, Amin H, Reddy VY, Almotarreb A, Pang HWK, Redfearn DP, Simpson CS, Michael K, Pereira EJ, Munt PW, Fitzpatrick MF, Baranchuk A, Revishvili AS, Uldry L, Simonyan G, Dzhordzhikiya T, Sopov O, Kalinin V, Locati ET, Vecchi AM, Cattafi G, Sachero A, Lunati M, Sayah S, Forclaz A, Alizadeh A, Nazari N, Hekmat M, Moradi M, Zeighami M, Ghanji H, Suzuki K, Takagi M, Maeda K, Tatsumi H, Virag N, Gomes C, Meireles A, Anjo D, Roque C, Vieira P, Lagarto V, Reis H, Torres S, Toth A, Vago H, Hocini M, Takacs P, Edes E, Marki A, Balazs GY, Huttl K, Merkely B, Lainis F, Buckley MM, Johns EJ, Seifer CM, Vesin JM, Daba L, Liebrecht K, Pietrucha AZ, Borowiec A, Mroczek-Czernecka D, Bzukala I, Wnuk M, Piwowarska W, Nessler J, Toquero Ramos J, Jais P, Perez Pereira E, Mitroi C, Castro Urda V, Fernandez Villanueva JM, Corona Figueroa A, Hernandez Reina L, Fernandez Lozano I, Bartoletti A, Bocconcelli P, Giuli S, Kappenberger L, Massa R, Svetlich C, Tarsi G, Tronconi F, Vitale E, Pietrucha AZ, Bzukala I, Wnuk M, Stryjewski P, Konduracka E, Haissaguerre M, Wegrzynowska M, Kruszelnicka O, Nessler J, Lousinha A, Labandeiro J, Antunes E, Silva S, Alves S, Timoteo A, Oliveira M, Sehra R, Cruz Ferreira R, Pietrucha AZ, Wnuk M, Jedrzejczyk-Spaho J, Bzukala I, Kruszelnicka O, Wegrzynowska M, Piwowarska W, Nessler J, Krummen D, Briggs C, Rappel WJ, Narayan S, Sediva L, Neuzil P, Petru J, Skoda J, Janotka M, Chovanec M, Yamashiro K, Takami K, Sakamoto Y, Satoh K, Suzuki T, Nakagawa H, Romanov A, Pokushalov E, Artemenko S, Shabanov V, Stenin I, Elesin D, Turov A, Yakubov A, Hioki M, Matsuo S, Ito K, Narui R, Yamashita S, Sugimoto K, Yoshimura M, Yamane T, Pokushalov E, Romanov A, Artemenko S, Shabanov V, Elesin D, Stenin I, Turov A, Yakubov A, Miyazaki S, Shah AJ, Hocini M, Jais P, Haissaguerre M, Di Biase L, Gallinghouse JD, Rajappan K, Kautzner J, Dello Russo A, Tondo C, Lorgat F, Natale A, Balta O, Buenz K, Paessler M, Anders H, Horlitz M, Deneke T, Lickfett L, Liberman I, Linhart M, Andrie R, Mittmann-Braun E, Stockigt F, Nickenig G, Schrickel J, Tilz R, Rillig A, Feige B, Metzner A, Fuernkranz A, Burchard A, Wissner E, Ouyang F, Betts TR, Jones MA, Wong KCK, Qureshi N, Bashir Y, Rajappan K, Romanov A, Pokushalov E, Corbucci G, Artemenko S, Shabanov V, Turov A, Losik D, Selina V, Crandall MA, Daniels C, Daoud E, Kalbfleisch S, Yamaji H, Murakami T, Kawamura H, Murakami M, Hina K, Kusachi S, Dakos G, Vassilikos V, Paraskevaidis S, Mantziari A, Theophylogiannakos S, Chouvarda I, Chatzizisis I, Styliadis I, Kimura T, Fukumoto K, Nishiyama N, Aizawa Y, Fukuda Y, Sato T, Miyoshi S, Takatsuki S, Navarrete Casas AJ, Ali I, Conte FC, Moran M, Graham BG, Kalejs O, Lacis R, Stradins P, Koris A, Putnins I, Vikmane M, Lejnieks A, Erglis A, Estrada A, Perez Silva A, Castrejon S, Doiny D, Merino JL, Baranchuk A, Greiss I, Simpson CS, Abdollah H, Redfearn DP, Buys-Topart M, Nitzsche R, Thibault B, Deisenhofer I, Reents T, Ammar S, Fichtner S, Kathan S, Kolb C, Hessling G, Reif S, Schade S, Taggeselle J, Frey A, Birkenhagen A, Kohler S, Schmidt M, Cano Perez O, Buendia F, Igual B, Osca JM, Sanchez JM, Sancho-Tello MJ, Olague JM, Salvador A, Calvo N, Tolosana JM, Fernandez-Armenta J, Matas M, Barbarin MC, Berruezo A, Brugada J, Mont L, Habibovic M, Van Den Broek KC, Theuns DAMJ, Jordaens L, Alings M, Van Der Voort PH, Pedersen SS, Pupita G, Molini S, Brambatti M, Capucci A, Molodykh S, Idov EM, Belyaev OV, Segreti L, Soldati E, Zucchelli G, Di Cori A, Viani S, Paperini L, De Lucia R, Bongiorni MG, Binner L, Taborsky M, Bello D, Heuer H, Ramza B, Jenniskens I, Johnson WB, Silvetti MS, Rava' L, Russo MS, Di Mambro C, Ammirati A, Gimigliano G, Prosperi M, Drago F, Santos AR, Picarra B, Semedo P, Dionisio P, Matos R, Leitao M, Jacinto A, Trinca M, Mazzone P, Ciconte G, Marzi A, Paglino G, Vergara P, Sora N, Gulletta S, Della Bella P, Koppitz P, Fach A, Hobbiesiefken S, Fiehn E, Hambrecht R, Sperzel J, Jung M, Schmitt J, Pajitnev D, Burger H, Burger H, Goebel G, Ehrlich W, Walther T, Ziegelhoeffer T, Vancura V, Wichterle D, Melenovsky V, Kautzner J, Glikson M, Goldenberg G, Segev A, Dvir D, Kuzniec J, Finkelstein A, Hay I, Guetta V, Choo WK, Gupta S, Kirkfeldt R, Johansen J, Nohr E, Moller M, Arnsbo P, Nielsen J, Santos AR, Picarra B, Semedo P, Dionisio P, Matos R, Leitao M, Banha M, Trinca M, Stojanov P, Raspopovic S, Vasic D, Savic D, Nikcevic G, Jovanovic V, Defaye P, Mondesert B, Mbaye A, Cassagneau R, Gagniere V, Jacon J, Sanfins V, Reis HR, Nobre JN, Martins VM, Duarte LD, Morais CM, Conceicao JC, Hero M, Rey JL, Thibault B, Ducharme A, Simpson C, Stuglin C, Blier L, Senaratne M, Khaykin Y, Pinter A, Mlynarska A, Mlynarski R, Sosnowski M, Wilczek J, Iorgulescu C, Bogdan S, Constantinescu D, Caldararu C, Dorobantu M, Radu A, Vatasescu RG, Yusu S, Ikeda T, Mera H, Miwa Y, Abe A, Miyakoshi M, Tsukada T, Yoshino H, Nayar V, Cantelon P, Rawling A, Belham MRD, Pugh PJ, Osca Asensi J, Sanchez JM, Cano O, Tejada D, Munoz B, Rodriguez M, Sancho-Tello MJ, Olague J, Wecke L, Van Hunnik A, Thompson T, Di Carlo L, Zdeblick M, Auricchio A, Prinzen F, Doltra Magarolas A, Bijnens B, Silva E, Penela D, Mont L, Tolosana JM, Brugada J, Sitges M, Ofman P, Navaravong L, Leng J, Peralta A, Hoffmeister P, Levine R, Cook J, Stoenescu M, Tettamanti ME, Revilla Orodea A, Lopez Diaz J, De La Fuente Galan L, Arnold R, Garcia Moran E, San Roman Calvar JA, Gomez Salvador I, Nakamura K, Takami M, Keida T, Mesato A, Higa S, Shimabukuro M, Masuzaki H, Proietti R, Sagone A, Domenichini G, Burri H, Valzania C, Biffi M, Sunthorn H, Gavaruzzi G, Foulkes H, Boriani G, Koh S, Hou W, Rosenberg S, Snell J, Poore J, Dalal N, Bornzin G, Kloppe A, Mijic D, Bogossian H, Ninios I, Zarse M, Lemke B, Guedon-Moreau L, Kouakam C, Klug D, Marquie C, Ziglio F, Kacet S, Mohamed Fereig Hamed H, Hamdy AMAL, Abd El Aziz AHMED, Nabih MRVAT, Hamdy REHAB, Yaminisaharif A, Davoudi GH, Kasemisaeid A, Sadeghian S, Vasheghani Farahani A, Yazdanifard P, Shafiee A, Alonso C, Grimard C, Jauvert G, Lazarus A, Fernandez-Armenta J, Berruezo A, Mont LL, Sitges M, Andreu D, Ortiz-Perez J, Caralt T, Brugada J, Escudero J, Perez F, Griffith KM, Ferreyra R, Urena P, Demas M, Muratore C, Mazzetti H, Guardado J, Sanfins V, Fernandes M, Pereira VH, Canario-Almeida F, Ferreira F, Rodrigues B, Almeida J, Sokal A, Jedrzejczyk E, Lenarczyk R, Pluta S, Kowalski O, Pruszkowska P, Swiatkowski A, Kalarus Z, Heinke M, Ismer B, Kuehnert H, Heinke T, Surber R, Osypka N, Prochnau D, Figulla HR, Iacopino S, Landolina M, Proclemer A, Padeletti L, Calvi V, Pierantozzi A, Di Stefano P, Boriani G, Bauer A, Bode F, Le Gal F, Deharo JC, Delay M, Nitzsche R, Clementy J, Kawamura M, Munetsugu Y, Tanno K, Kobayashi Y, Cannom D, Hosoda J, Ishikawa T, Andoh K, Nobuyoshi M, Fujii S, Shizuta S, Kimura T, Isshiki T, Castel MA, Tolosana JM, Perez-Villa F, Mont L, Sitges M, Vidal B, Brugada J, Pluta S, Lenarczyk R, Kowalski O, Pruszkowska-Skrzep P, Sokal A, Szulik M, Kukulski T, Kalarus Z, Gianfranchi L, Bettiol K, Pacchioni F, Alboni P, Abu Sham'a R, Buber J, Nof E, Kuperstein R, Feinberg M, Luria D, Eldar M, Glikson M, Parks K, Stone JR, Singh JP, Hatzinikolaou-Kotsakou E, Kotsakou M, Beleveslis TH, Moschos G, Reppas E, Latsios P, Tsakiridis K, Kazemisaeid A, Davoodi G, Yamini Sharif A, Sadeghian S, Sheikhvatan M, Toniolo M, Zanotto G, Rossi A, Tomasi L, Vassanelli C, Versteeg H, Van Den Broek KC, Theuns DAMJ, Mommersteeg PMC, Alings M, Van Der Voort PH, Jordaens L, Pedersen SS, Vergara G, Blauer J, Ranjan R, Vijayakumar S, Kholmovski E, Volland N, Macleod R, Marrouche N, Aguinaga Arrascue LE, Bravo A, Garcia Freire P, Gallardo P, Hasbani E, Dantur J, Quintana R, Adragao PP, Cavaco D, Parreira L, Reis Santos K, Carmo P, Miranda R, Marcelino S, Cabrita D, Sommer P, Gaspar T, Rolf S, Arya A, Piorkowski C, Hindricks G, Valles Gras E, Bazan V, Portillo L, Suarez F, Bruguera J, Marti J, Huo Y, Arya A, Richter S, Schoenbauer R, Sommer P, Hindricks G, Piorkowski C, Rivas N, Casaldaliga J, Roca I, Dos L, Perez-Rodon J, Pijuan A, Garcia-Dorado D, Moya A, Carter HB, Garg A, Hegrenes J, Sih HJ, Teplitsky LR, Kuroki K, Tada H, Seo Y, Ishizu T, Igawa M, Sekiguchi Y, Kuga K, Aonuma K, Rodriguez A C, Mejias J, Hidalgo P, Hidalgo L JA, Orczykowski M, Derejko P, Walczak F, Szufladowicz E, Urbanek P, Bodalski R, Bieganowska K, Szumowski L, Peichl P, Wichterle D, Cihak R, Skalsky I, Kautzner J, Kubus P, Vit P, Zaoral L, Peichl P, Gebauer RA, Fiala M, Janousek J, Hiroshima K, Goya M, Ohe M, Hayashi K, Makihara Y, Nagashima M, An Y, Nobuyoshi M, Schloesser M, Lawrenz T, Meyer Zu Vilsendorf D, Strunk-Mueller C, Stellbrink C, Papagiannis J, Avramidis D, Kokkinakis C, Kirvassilis G, Eidelman G, Arenal A, Datino T, Atienza F, Gonzalez Torrecilla E, Miracle A, Hernandez J, Fernandez Aviles F, Ene E, Caldararu C, Iorgulescu C, Dorobantu M, Vatasescu RG, Insulander P, Bastani H, Braunschweig F, Drca N, Kenneback G, Schwieler J, Tapanainen J, Jensen-Urstad M, Andrea B, Andrea EMA, Maciel WM, Siqueira LS, Cosenza RC, Mittidieri FM, Farah SF, Atie JA, Kanoupakis E, Kallergis E, Mavrakis H, Goudis C, Saloustros I, Malliaraki N, Chlouverakis G, Vardas P, Bonnes JL, Jaspers Focks J, Westra SW, Brouwer MA, Smeets JLRM, Inama G, Pedrinazzi C, Landolina M, Oliva F, Senni M, Proclemer A, Zoni Berisso M, Mostov S, Haim M, Nevzorov R, Hasadi D, Starsberg B, Porter A, Kuschyk J, Schoene A, Streitner F, Veltmann CG, Schimpf R, Borggrefe M, Luesebrink U, Gardiwal A, Oswald H, Koenig T, Duncker D, Klein G, Bastiaenen R, Batchvarov V, Atty O, Cheng JH, Behr ER, Gallagher MM, Starrenburg AH, Kraaier K, Pedersen SS, Scholten MF, Van Der Palen J, Adhya S, Smith LA, Zhao T, Bannister C, Kamdar RH, Martinelli M, Siqueira S, Greco R, Nishioka SAD, Pedrosa AAA, Alkmim-Teixeira R, Peixoto GL, Costa R, Pedersen SS, Versteeg H, Nielsen JC, Mortensen PT, Johansen JB, Kwasniewski W, Filipecki A, Urbanczyk-Swic D, Orszulak W, Trusz - Gluza M, Jimenez-Candil J, Hernandez J, Morinigo J, Ledesma C, Martin-Luengo C, Vogtmann T, Gomer M, Stiller S, Kuehlkamp V, Zach G, Loescher S, Kespohl S, Baumann G, Snell JD, Korsun N, Rooke R, Snell JR, Morley B, Bharmi R, Nabutovsky Y, Mollerus M, Naslund L, Meyer A, Lipinski M, Libey B, Dornfeld K, Jimenez-Candil J, Hernandez J, Martin A, Gallego M, Morinigo J, Ledesma C, Martin-Luengo C, De Bie MK, Van Rees JB, Borleffs CJ, Thijssen J, Jukema JW, Schalij MJ, Van Erven L, Van Der Velde ET, Witteman TA, Foeken H, Van Erven L, Schalij MJ, Szili-Torok T, Akca F, Caliskan K, Ten Cate F, Jordaens L, Michels M, Cozma DC, Petrescu L, Mornos C, Dragulescu SI, Groeneweg JA, Velthuis BK, Cox MGPJ, Loh P, Dooijes D, Cramer MJ, De Bakker JMT, Hauer RNW, Park SD, Shin SH, Woo SI, Kwan J, Park KS, Kim DH, Kwan J, Iorio A, Vitali Serdoz L, Brun F, Daleffe E, Zecchin M, Dal Ferro M, Santangelo S, Sinagra GF, Ouali S, Hammemi R, Hammas S, Kacem S, Gribaa R, Neffeti E, Remedi F, Boughzela E, Korantzopoulos P, Letsas K, Christogiannis Z, Kalantzi K, Ntorkos A, Goudevenos J, Foley PWX, Yung L, Barnes E, Munetsugu Y, Tanno K, Kikuchi M, Ito H, Miyoshi F, Kawamura M, Kobayashi Y, Pecini R, Marott JM, Jensen GB, Theilade J, Mine T, Kodani T, Masuyama T, Mozos IM, Serban C, Costea C, Susan L, Barthel P, Mueller A, Malik M, Schmidt G, Schmidt G, Barthel P, Mueller A, Malik M, Karakurt O, Kilic H, Munevver Sari DR, Mroczek-Czernecka D, Pietrucha AZ, Borowiec A, Wnuk M, Bzukala I, Kruszelnicka O, Konduracka E, Nessler J, Kikuchi Y, Meireles A, Gomes C, Anjo D, Roque C, Pinheiro Vieira A, Lagarto V, Hipolito Reis A, Torres S, Nof E, Miller L, Kuperstein R, Eldar M, Glikson M, Luria D, Vedrenne G, Bruguiere E, Redheuil A. Poster Session 2. Europace 2011. [DOI: 10.1093/europace/eur222] [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: 11/15/2022] Open
|
25
|
Abstract
We describe a variation in the A4 pulley reconstruction technique using one slip of the flexor digitorum superficialis insertion and report the results of a biomechanical analysis of this reconstruction in cadavers. While conserving the distal bony insertion, one slip of flexor digitorum superficialis is transferred over the flexor digitorum profundus tendon and sutured to the contralateral superficialis slip insertion. This creates a new pulley at the base of the original A4 pulley that can be adjusted to accommodate an FDP repair of increased bulk. We found a 57% reduction in excess excursion due to bowstringing when compared with no repair. Furthermore the repairs were sturdy, 94% of specimens maintaining their integrity when a proximally directed force of 50 N was applied.
Collapse
Affiliation(s)
- A Odobescu
- Division of Plastic and Reconstructive Surgery, McGill University Health Center, Montreal, Canada
| | | | | | | |
Collapse
|
26
|
Nobécourt E, Diedisheim M, Radu A, Rotariu M, Boitard C, Laromiguière M, Larger E. P95 Carence en vitamine D chez les diabétiques. Conséquences sur le métabolisme phosphocalcique. Diabetes & Metabolism 2010. [DOI: 10.1016/s1262-3636(10)70243-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
27
|
Endo M, Henriques-Coelho T, Zoltick PW, Stitelman DH, Peranteau WH, Radu A, Flake AW. The developmental stage determines the distribution and duration of gene expression after early intra-amniotic gene transfer using lentiviral vectors. Gene Ther 2009; 17:61-71. [PMID: 19727133 DOI: 10.1038/gt.2009.115] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Gene transfer after intra-amniotic injection has, in general, been of low efficiency and limited to epithelial cells in the skin, pulmonary and gastrointestinal system. We have recently shown that early gestational administration results in a more efficient gene transfer to developmentally accessible stem cell populations in the skin and eye. In this study we present a comprehensive analysis of patterns of tissue expression seen after early intra-amniotic gene transfer (IAGT) using lentiviral vectors. To assess the influence of developmental stage on tissue expression, injections were administered from the late head fold/early somite stage (E8) to E18. In early gestation (E8-10), green fluorescent protein (GFP) expression was observed in multiple organs, derived from all three germ layers. Remarkably, GFP expression was observed in tissues derived from mesoderm and neural ectoderm at E8, whereas expression was limited to only epithelial cells of ectoderm- and endoderm-derived organs after E11. The amount and duration of gene expression was much higher after IAGT at early gestational time points. The observed temporal patterns of gene expression correspond to the predicted developmental accessibility of organ-specific cell populations. This model may be useful for the analyses of mechanisms of genetic and/or developmental disease and for the development of prenatal gene therapy for specific disorders.
Collapse
Affiliation(s)
- M Endo
- The Children's Center for Fetal Research, Children's Hospital of Philadelphia, Philadelphia, PA 19104-4318, USA
| | | | | | | | | | | | | |
Collapse
|
28
|
Ioffreda MD, Albelda SM, Elder DE, Radu A, Leventhal LC, Zweiman B, Murphy GF. TNFα Induces E-Selectin Expression and PECAM-1 (CD31) Redistribution in Extracutaneous Tissues. ACTA ACUST UNITED AC 2009. [DOI: 10.3109/10623329309100955] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
29
|
Herdrich B, Radu A, Liechty K. 217. SCA-1 Knockout (SCA-1 KO) Improves Dermal Wound Healing in Aged Mice. J Surg Res 2009. [DOI: 10.1016/j.jss.2008.11.259] [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: 10/21/2022]
|
30
|
Abstract
There are more than 6 million diabetes patients in Germany. Due to long-term neuropathic and angiopathic sequelae, the number of patients with "diabetic foot syndrome" has increased dramatically in recent years. Diabetic foot ulcers have become one of the most common pathologies in interdisciplinary wound care centers. Because of its complex pathogenesis, diabetic foot syndrome needs a multidisciplinary therapeutic approach. More than 150,000 diabetics per year develop foot ulcers that often heal slowly and progress into chronic wounds. Despite all efforts at prevention, early diagnosis, and adequate therapy, more than 20,000 diabetics suffer major limb amputation in Germany every year. Applying stringent standards of care in interdisciplinary wound care centers, the amputation rate in patients with diabetic foot syndrome can be reduced to less than 50%. This article describes the complexity of diabetic foot syndrome with respect to pathogenesis, diagnostics, and therapy from a vascular surgeon's point of view. The importance of an interdisciplinary approach is emphasized.
Collapse
Affiliation(s)
- G Rümenapf
- Gefässzentrum Oberrhein,Klinik für Gefässchirurgie, Diakonissen-Stiftungs-Krankenhaus, Hilgardstrasse 26, 67346, Speyer, Deutschland.
| | | | | | | | | |
Collapse
|
31
|
Auber F, Endo M, Laje P, Robinson L, Shegu S, Radu A, Zoltick P, Davey M, Flake A. SFCP-011 – Chirurgie viscérale – Une thérapie génique in utero par ecSOD permet-elle de prévenir les lésions pulmonaires hyperoxiques néonatales ? Arch Pediatr 2008. [DOI: 10.1016/s0929-693x(08)71963-8] [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]
|
32
|
Radu A, Pica A, Villemure JG, Maire R. Indications et résultats du traitement des neurinomes de l'acoustique par radiothérapie stéréotaxique avec LINAC: résultats préliminaires. ACTA ACUST UNITED AC 2007; 124:110-4. [PMID: 17509516 DOI: 10.1016/j.aorl.2006.12.002] [Citation(s) in RCA: 4] [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] [Received: 02/17/2006] [Accepted: 12/01/2006] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Radiosurgery is presently becoming an alternative to microsurgical resection of acoustic neuromas. The interest of radiosurgery consists in its lower morbidity compared to surgery and likely in similar rates of long-term tumor control. The goal of our study was to assess the clinical outcome (hearing preservation and neurological complications) as well as tumor control after low-dose radiosurgery for unilateral acoustic neuromas. MATERIAL AND METHODS Since April 2002, 22 patients with untreated acoustic neuromas underwent stereotactic radiosurgery using a linear accelerator (LINAC) and a micromultileaf collimator (mMLC, Brain Lab) at a low-dose of 12 Gy. The average age was 56.4 years (range 29-73 years). The treatment volume was 0.03 to 6.04 cm(3) (median 1.85 cm(3)). The median follow-up period was 18 months (range 6-36 months). RESULTS No morbidity was observed during the treatment. Preservation of a serviceable hearing (classes I and II according to the Gardner-Robertson scale) was achieved in 10 of 14 patients (71%). Radiological tumor growth control was obtained in all patients (100%). Trigeminal neuropathy was observed in two patients. One of these patients also experienced a slight facial weakness. CONCLUSIONS Low dose radiosurgery provides a low rate of post-therapeutic morbidity and yields the preservation of a serviceable hearing in 70% of cases. Tumor control is observed in all patients, but a longer follow-up period is needed to confirm the stability of the tumor size.
Collapse
Affiliation(s)
- A Radu
- Service d'ORL et de chirurgie cervicofaciale, CHU Vaudois, 1011 Lausanne, Switzerland.
| | | | | | | |
Collapse
|
33
|
Jaquet Y, Pilloud R, Grosjean P, Radu A, Monnier P. [Endoscopic mucosal resection for the treatment of superficial adenocarcinima developed on the Barrett's mucosa]. Rev Med Suisse 2005; 1:2385-6, 2389-90. [PMID: 16300281] [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: 05/05/2023]
Abstract
We present a new technique of endoscopic mucosal resection for the treatment of extended superficial lesions of the esophagus such as early squamous cell carcinoma, high grade intraepithelial neoplasia or early adenocarcinoma arising in Barrett's esophagus. A modified rigid esophagoscope has been designed. A large mucosal area is sucked against a perforated 180 degrees window. Mucosal resection is performed by an electrical wire loop at a constant depth of 1 +/- 0,1 mm. The resected surface varies from 4 to 12 cm2. Circumferential resection consists of two opposite hemi-circumferential resections. The resection yields one or two specimens only for histological study allowing easy orientation and analysis of the resection margins. The deep resection margin is precisely located at the submucosal level, a prerequisite for a safe resection of T1a cancers.
Collapse
Affiliation(s)
- Y Jaquet
- Service d'ORL et chirurgie cervico-faciale, CHUV, Lausanne.
| | | | | | | | | |
Collapse
|
34
|
Danzer E, Schwarz U, Wehrli S, Radu A, Adzick NS, Flake AW. Retinoic acid induced myelomeningocele in fetal rats: characterization by histopathological analysis and magnetic resonance imaging. Exp Neurol 2005; 194:467-75. [PMID: 15893307 DOI: 10.1016/j.expneurol.2005.03.011] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2004] [Revised: 03/11/2005] [Accepted: 03/11/2005] [Indexed: 12/29/2022]
Abstract
The prevention of human neural tube defects by folic acid administration and the potential for fetal surgical intervention for myelomeningocele (MMC) have renewed interest in the molecular pathways and pathophysiology of spina bifida. Animal models for assessment of the early developmental biology and pathophysiology of this lesion are needed. The goal of this study was to develop and characterize a non-surgical rat model of MMC. Time-dated Sprague-Dawley rats were gavage fed different doses of retinoic acid (RA) dissolved in olive oil at E10 (maternal n = 55, fetal n = 505). Control animals received olive oil alone (maternal n = 20, fetal n = 265) or were untreated (maternal n = 5, fetal n = 63). Fetuses were analyzed by detailed histopathology and MRI. Overall, isolated MMC occurred in 60.7% (307/505) of RA-exposed fetuses and no controls. Histopathology confirmed the entire spectrum of severity observed in human MMC, ranging from exposure of the cord with intact neural elements to complete cord destruction. MRI of the brain of MMC fetuses confirmed structural changes similar to humans with Arnold-Chiari malformation, including downward displacement of the cerebellum to just above the foramen magnum and compression of the developing medulla into a small posterior fossa. In conclusion, the RA-induced rat model of MMC is developmentally and anatomically analogous to human MMC. This relatively efficient and cost-effective model of MMC should facilitate investigation of the developmental biology and pathophysiology of MMC, and may be useful for the evaluation of further strategies for prenatal treatment.
Collapse
Affiliation(s)
- E Danzer
- The Children's Hospital of Philadelphia, The Children's Institute for Surgical Science, The University of Pennsylvania School of Medicine, Abramson Research Center, Room 1116B, 3615 Civic Center Boulevard, Philadelphia, PA 19104-4318, USA
| | | | | | | | | | | |
Collapse
|
35
|
Radu A, Grosjean P, Jaquet Y, Pilloud R, Wagnieres G, van den Bergh H, Monnier P. Photodynamic therapy and endoscopic mucosal resection as minimally invasive approaches for the treatment of early esophageal tumors: Pre-clinical and clinical experience in Lausanne. Photodiagnosis Photodyn Ther 2005; 2:35-44. [DOI: 10.1016/s1572-1000(05)00035-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2005] [Revised: 04/14/2005] [Accepted: 04/14/2005] [Indexed: 12/20/2022]
|
36
|
Abstract
BACKGROUND AND STUDY AIMS : There is a growing trend toward the use of minimally invasive endoscopic methods to treat early esophageal cancers. Although there is continuing controversy regarding the management of Barrett's esophagus and the value of surveillance programs continues to be debated, the ultimate goal is to eradicate all of the foci of intestinal metaplasia and hence the risk of developing an adenocarcinoma. A number of ablative techniques have so far been applied, but none has yet been shown to be superior and entirely satisfactory. The present study evaluates the feasibility, efficacy, and safety of a promising new method of endoscopic mucosal resection (EMR) in a sheep model, based on the use of a modified rigid esophagoscope. MATERIALS AND METHODS The resectoscope consists of a rigid esophagoscope with a distal transparent window through which the mucosa and part of the submucosa are sucked in and then resected with a wire loop. The sheep model was chosen because of its similarities to human anatomy with regard to the thickness and histological structure of the esophagus. Fifty-five separate hemicircumferential resections and 11 circumferential resections were carried out in 21 and 11 animals, respectively. Mitomycin C, an agent inhibiting fibroblast proliferation, was administered at different time intervals after eight circumferential resections to prevent the development of esophageal strictures. RESULTS All of the specimens of hemicircumferential resections were obtained as single distinct pieces and were easily examined histologically. The surface of the specimen correlated with the size of the window and ranged from 6 to 12 cm (2). In circumferential resections, the specimens were obtained in two pieces. An accurate resection depth through the submucosa was achieved in 58 of 65 resected specimens. No complications occurred after hemicircumferential resections. Complications after circumferential resections (stenosis or perforation, or both) were minimized after appropriate timing of mitomycin C administration. CONCLUSIONS This EMR method offers a promising approach in comparison with other options currently available. It appears to be superior in terms of the size of the resected specimen, the precision and regularity of the resection depth, and the accuracy of histological diagnosis with safety margins. Hemicircumferential EMRs have been shown to be safe in the sheep model. This new technique warrants further animal studies before being used for circumferential EMR in humans.
Collapse
Affiliation(s)
- A Radu
- Dept. of Otolaryngology, Head and Neck Surgery, CHUV Hospital, Lausanne, Switzerland
| | | | | | | |
Collapse
|
37
|
Borle F, Radu A, Fontolliet C, van den Bergh H, Monnier P, Wagnières G. Selectivity of the photosensitiser Tookad for photodynamic therapy evaluated in the Syrian golden hamster cheek pouch tumour model. Br J Cancer 2004; 89:2320-6. [PMID: 14676813 PMCID: PMC2395293 DOI: 10.1038/sj.bjc.6601428] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The response to photodynamic therapy (PDT) with the photosensitiser (PS) Tookad® was measured in the Syrian hamster cheek pouch model on normal mucosae and chemically induced squamous cell carcinoma. This PS is a palladium-bacteriopheophorbide presenting absorption peaks at 538 and 762 nm. The light dose, drug dose and drug injection-light irradiation times (DLI), ranging between 100 and 300 J cm−2, 1–5 mg kg−1 and 10–240 min respectively, were varied and the response to PDT was analysed by staging the macroscopic response and by the histological examination of the sections of the irradiated cheek pouch. A fast time decay of the tissular response with drug dose of 1–5 mg kg−1 was observed for DLI ranging from 10 to 240 min and for light doses of 100–300 J cm−2 delivered at a light dose rate of 150 mW cm−2. A significantly higher level of tissular response was observed for squamous cell carcinoma compared to normal tissue. Nevertheless, the threshold level of the drug–light dose for a detectable response was not significantly different in the tumoral vs normal tissue. The highest response at the shortest DLIs and the absence of measurable response at DLI larger than 240 min at light dose of 300 J cm−2 and drug dose of 5 mg kg−1 reveals the predominantly vascular effect of Tookad®. This observation suggests that Tookad® could be effective in PDT of vascularised lesions.
Collapse
Affiliation(s)
- F Borle
- Institute of Environmental Engineering, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland
| | - A Radu
- Department of Otolaryngology, Head and Neck Surgery, CHUV Hospital, CH-1011 Lausanne, Switzerland
| | - C Fontolliet
- Institute of Pathology, University of Lausanne, CH-1011 Lausanne, Switzerland
| | - H van den Bergh
- Institute of Environmental Engineering, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland
| | - P Monnier
- Department of Otolaryngology, Head and Neck Surgery, CHUV Hospital, CH-1011 Lausanne, Switzerland
| | - G Wagnières
- Institute of Environmental Engineering, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland
- Institute of Environmental Engineering, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland. E-mail:
| |
Collapse
|
38
|
Keswani SG, Parvadia JK, Kozin ED, Malik A, Zoltick PW, Radu A, Alaee D, Katz AB, Crombleholme TM. 079 MMP 9 Mediates Angiopoietin?1 Recruitment of Endothelial Progenitor Cells to Diabetic Wounds. Wound Repair Regen 2004. [DOI: 10.1111/j.1067-1927.2004.0abstractby.x] [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: 11/28/2022]
|
39
|
Radu A, Capra G. [Medical and social implications of abortion]. Obstet Ginecol (Bucur) 2002; 36:147-9. [PMID: 12343448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
|
40
|
Radu A, Alecu CS, Raclariu A, Nanu L, Loghin M, Stanciu E, Necula A, Ionescu-Tirgoviste C, Patrugan V. CompAc information system for traditional Chinese medicine. Stud Health Technol Inform 2001; 81:401-3. [PMID: 11317777] [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: 02/19/2023]
Abstract
The paper presents a system developed for the assistance of diagnosis and treatment in alternative medicine, based on traditional Chinese methods. The system named CompAc, is a result of an interdisciplinary cooperation and is designed for the physician, specialist in acupuncture. The Compac system allows the determination of the type of energetic imbalance starting from the clinical picture of the patient and establishing whether an organ or any of the viscera are affected. It allows also the indication of different variants of treatment. The diagnosis proposed by the system has to be confirmed by the physician and can be modified by him. The system is also useful for medical training.
Collapse
Affiliation(s)
- A Radu
- Romanian Radio Broadcasting, 60-64 General Berthelot, Bucharest, Romania
| | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Kitano Y, Kanai M, Davies P, von Allmen D, Yang EY, Radu A, Kitano Y, Adzick NS, Flake AW. BAPS prize-1999: Lung growth induced by prenatal tracheal occlusion and its modifying factors: a study in the rat model of congenital diaphragmatic hernia. J Pediatr Surg 2001; 36:251-9. [PMID: 11172410 DOI: 10.1053/jpsu.2001.20683] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [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: 11/11/2022]
Abstract
BACKGROUND/PURPOSE Prenatal tracheal occlusion (TO) has been shown to accelerate lung growth in animal models and models of pulmonary hypoplasia. However, these models may not mimic early events in human congenital diaphragmatic hernia (CDH). The authors previously have developed a model of TO in the rat. The purpose of this study was to apply this technique to characterize TO-induced lung growth in the early onset nitrofen-induced model of CDH, and to address the clinically important questions of the effect of timing of TO and maternal infusion of terbutaline on TO-induced lung growth. METHODS Left-sided CDH was induced in the fetuses of time-dated pregnant Sprague-Dawley rats by feeding 100 mg of nitrofen on day 9 of gestation. TO was performed via maternal laparotomy and hysterotomy at 19 days' gestation. At harvest (21.5 days' gestation), lungs from nitrofen-exposed fetuses without CDH (non-CDH), with CDH (CDH), and with CDH and TO (CDH-TO) were compared by analysis of wet and dry weight, DNA and protein content, and stereologic morphometry. A second study was performed to assess relative lung growth achieved by equal intervals of TO after "early" (19 days) versus "late" (20 days) gestational TO. Finally, the effect of maternal infusion of terbutaline, a commonly used tocolytic for fetal surgery, on TO-induced lung growth was analyzed. RESULTS Analysis of lung growth showed consistent and significant lung growth in CDH-TO lungs. Lung growth after TO was proliferative and characterized by an increase in parenchymal volume as manifest by increased total saccular number and surface area and radial saccular count. Although visceral reduction was partially achieved, herniated liver was reduced incompletely. The majority of lung growth occurred during the latter half of the TO period. Early gestational age at TO and maternal terbutaline administration adversely influenced lung growth in CDH-TO fetuses. CONCLUSIONS Prenatal TO induces dramatic lung growth in the early onset, nitrofen-induced rat model of CDH. TO is more effective later in gestation presumably because of the advanced stage of lung development and lung fluid production. This effect could be counterbalanced by the use of beta-mimetic tocolytic, which inhibits fetal lung fluid production late in gestation. Multiple factors including fetal lung fluid production and absorption, pharmacologic agents, space-occupying herniated viscera, and timing and duration of TO may be important clinical variables. The development of the rat model should facilitate further studies into the cellular and molecular mechanisms responsible for TO-induced lung growth.
Collapse
Affiliation(s)
- Y Kitano
- Children's Institute for Surgical Science and The Center for Fetal Diagnosis and Treatment, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Kitano Y, Radu A, Shaaban A, Flake AW. Selection, enrichment, and culture expansion of murine mesenchymal progenitor cells by retroviral transduction of cycling adherent bone marrow cells. Exp Hematol 2000; 28:1460-9. [PMID: 11146168 DOI: 10.1016/s0301-472x(00)00551-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It has been difficult to characterize murine bone marrow (BM)-derived mesenchymal progenitor cells (MPCs) because of contamination with hematopoietic cells. We took advantage of the rapid proliferation of MPCs after replating to enrich murine MPCs by transfection with a retroviral vector carrying both LacZ and the selective neomycin resistance (neoR) gene. Freshly harvested BM cells from mice were incubated with BAG retroviral vector produced by amphotropic psi-CRIP or ecotropic psi-CRE producer cells for 48 hours and grown in the presence of G418.Cells incubated in psi-CRIP supernatant formed colonies composed of large homogeneous cells that were free of CD45(+) cells, but cells incubated in psi-CRE supernatant did not form stromal cell colonies. In the undifferentiated state, the cells displayed a fibroblast-like phenotype with low alkaline phosphatase activity. However, upon treatment with dexamethasone or 5-azacytidine, the retrovirally transduced cells differentiated into oil-red-O-positive adipocytic cells and osteogenic cells generating von Kossa-positive bone nodules. Osteogenic supplements composed of beta-glycerophosphate, dexamethasone, and ascorbic acid induced an increase in alkaline phosphatase activity and acute osteogenesis associated with early cell detachment. Subcutaneous injection with retrovirally transduced cells into day 1 newborn mice of the same strain produced ectopic calcium depositions surrounded by X-gal(+) cells. Retroviral selection of cycling adherent cells is an effective approach for enrichment of MPCs.
Collapse
Affiliation(s)
- Y Kitano
- Department of Surgery, Children's Hospital of Philadelphia, Philadelphia, PA 19104-4318, USA
| | | | | | | |
Collapse
|
43
|
Liechty KW, MacKenzie TC, Shaaban AF, Radu A, Moseley AM, Deans R, Marshak DR, Flake AW. Human mesenchymal stem cells engraft and demonstrate site-specific differentiation after in utero transplantation in sheep. Nat Med 2000; 6:1282-6. [PMID: 11062543 DOI: 10.1038/81395] [Citation(s) in RCA: 841] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mesenchymal stem cells are multipotent cells that can be isolated from adult bone marrow and can be induced in vitro and in vivo to differentiate into a variety of mesenchymal tissues, including bone, cartilage, tendon, fat, bone marrow stroma, and muscle. Despite their potential clinical utility for cellular and gene therapy, the fate of mesenchymal stem cells after systemic administration is mostly unknown. To address this, we transplanted a well-characterized human mesenchymal stem cell population into fetal sheep early in gestation, before and after the expected development of immunologic competence. In this xenogeneic system, human mesenchymal stem cells engrafted and persisted in multiple tissues for as long as 13 months after transplantation. Transplanted human cells underwent site-specific differentiation into chondrocytes, adipocytes, myocytes and cardiomyocytes, bone marrow stromal cells and thymic stroma. Unexpectedly, there was long-term engraftment even when cells were transplanted after the expected development of immunocompetence. Thus, mesenchymal stem cells maintain their multipotential capacity after transplantation, and seem to have unique immunologic characteristics that allow persistence in a xenogeneic environment. Our data support the possibility of the transplantability of mesenchymal stem cells and their potential utility in tissue engineering, and cellular and gene therapy applications.
Collapse
Affiliation(s)
- K W Liechty
- The Children's Institute for Surgical Science, The Children's Hospital of Philadelphia, 34th and Civic Center Boulevard, Philadelphia, Pennsylvania 19104-4399, USA
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Radu A, Wagnières G, van den Bergh H, Monnier P. Photodynamic therapy of early squamous cell cancers of the esophagus. Gastrointest Endosc Clin N Am 2000; 10:439-60. [PMID: 10900053] [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: 02/04/2023]
Abstract
The conventional treatment for the cure of esophageal cancer is surgical resection. Esophageal cancer, when detected at an early stage, has a very good probability of being eradicated by less aggressive procedures, and photodynamic therapy has proven to be a safe and effective treatment modality in some carefully selected patients. The indications, outcomes, and future considerations regarding the use of photodynamic therapy for the treatment of superficial squamous cell carcinomas of the esophagus are discussed in this article.
Collapse
Affiliation(s)
- A Radu
- Department of Otolaryngology-Head and Neck Surgery, Centre Hospitalier Universitaire Vaudois Hospital, Lausanne, Switzerland.
| | | | | | | |
Collapse
|
45
|
Zellweger M, Radu A, Monnier P, van den Bergh H, Wagnières G. Fluorescence pharmacokinetics of Lutetium Texaphyrin (PCI-0123, Lu-Tex) in the skin and in healthy and tumoral hamster cheek-pouch mucosa. J Photochem Photobiol B 2000; 55:56-62. [PMID: 10877068 DOI: 10.1016/s1011-1344(00)00027-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We have investigated the pharmacokinetics (PK) of Lutetium Texaphyrin (Lu-Tex), a second-generation photosensitizer, in the Syrian hamster cheek pouch early cancer model. Ten male hamsters, five with chemically induced early squamous cell cancer of the left cheek pouch, received an intracardiac injection of a 10 mg/ml Lu-Tex solution, resulting in a dose of 12 mg Lu-Tex per kg of bodyweight. The PK of the dye have been measured during the 24 h following the injection with an optical-fiber-based spectrofluorometer on the ventral skin, the healthy and the tumoral cheek-pouch mucosa. The Lu-Tex fluorescence is excited at 460 nm and detected around 740 nm. All the measurements yield very similar pharmacokinetic curves. The fluorescence intensity reaches a maximum between two and three hours after the injection and, at its maximum, it is consistently higher (up to 1.5 times) on the tumor than on the healthy mucosa. It remains smaller on the skin than on cheek-pouch mucosa. After 24 h, the Lu-Tex fluorescence is no longer detectable either on the skin, on the lesion or on the healthy mucosa. Moreover, Lu-Tex clearly displays a significant fluorescence selectivity between early carcinoma and healthy mucosa in this model. Furthermore, the inter-animal fluctuations of the fluorescence signal are small (+/-16% on the tumor-bearing mucosa). Eight-minute-long skin-irradiation tests have been performed 24 h after the injection of the Lu-Tex on the ventral skin of 16 additional animals with a solar simulator. No reaction is observed, either macroscopically or microscopically, which further demonstrates, as suggested by the fluorescence measurements, that this photosensitizer is significantly cleared from the skin after 24 h.
Collapse
Affiliation(s)
- M Zellweger
- Institute of Environmental Engineering, DGR-LPAS, EPFL, Lausanne, Switzerland
| | | | | | | | | |
Collapse
|
46
|
Sylvester KG, Nesbit M, Radu A, Herlyn M, Adzick NS, Crombleholme TM. Adenoviral-mediated gene transfer in wound healing: acute inflammatory response in human skin in the SCID mouse model. Wound Repair Regen 2000; 8:36-44. [PMID: 10760213 DOI: 10.1046/j.1524-475x.2000.00036.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The use of an adenoviral vector as a means of therapeutic protein delivery for the treatment of impaired wound healing is a potentially effective application of current gene transfer techniques. This study was designed to investigate the ability of adenovirus to mediate gene transfer in healing wounds in human skin in vivo. The human skin/severe combined immunodeficient mouse chimera model was used to study both the response of human tissue to adenoviral infection and the nature of the acute inflammatory response. The effects of adenoviral infection and transgene expression on the rate and quality of human wound healing were then investigated. Cell- and species-specific monoclonal antibodies were used to characterize the resident skin cell types participating in wound repair, the inflammatory response, and the proliferative potential of adenovirus-treated compared to control skin. Our studies show that, following wounding, normal skin architecture is restored in the presence of adenoviral infection equivalent to noninfected controls. Despite an increased acute inflammatory response after adenovirus injection, no difference in the healing capabilities of wounded skin was observed, suggesting that adenovirus-mediated gene transfer for growth factor-mediated acceleration of wound healing may be feasible.
Collapse
Affiliation(s)
- K G Sylvester
- Children's Institute for Surgical Science, The Children's Hospital of Philadelphia and the University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA
| | | | | | | | | | | |
Collapse
|
47
|
Abstract
Photodynamic therapy is increasingly being used for the treatment of various cancers. However, this technique has a major adverse effect, namely skin photosensitization. An unusual case of skin burn associated with pulse oximetry during photodynamic therapy in a patient treated for an early esophageal tumor is described. The patient, who was treated with mTHPC, suffered a second-degree burn on the index finger with subsequent loss of the nail. The only previously reported case of such a complication occurred with Photofrin, whereby no tissue other than skin was damaged.
Collapse
Affiliation(s)
- A Radu
- Department of Otolaryngology, Head and Neck Surgery, CHUV Hospital, Lausanne, Switzerland.
| | | | | | | |
Collapse
|
48
|
Liechty KW, Nesbit M, Herlyn M, Radu A, Adzick NS, Crombleholme TM. Adenoviral-mediated overexpression of platelet-derived growth factor-B corrects ischemic impaired wound healing. J Invest Dermatol 1999; 113:375-83. [PMID: 10469337 DOI: 10.1046/j.1523-1747.1999.00705.x] [Citation(s) in RCA: 109] [Impact Index Per Article: 4.4] [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: 11/20/2022]
Abstract
Chronic wounds represent a major clinical problem with significant morbidity and healthcare expenditures, but no effective therapies. Topical platelet-derived growth factor-BB trials have required large and repeated doses to achieve only a modest effect. We examined the ability of an adenovirus containing the platelet-derived growth factor-B transgene to improve the rate of wound healing through induction of platelet-derived growth factor-B overexpression in cells participating in the wound healing response. We treated excisional wounds in the ischemic rabbit ear, which have a 60% delay in healing, with vehicle, 106, or 108 plaque-forming units of an adenovirus containing the platelet-derived growth factor-B per wound (n = 19). At 7 d this resulted in a decrease in the epithelial gap from 3.4 +/- 1 mm (mean +/- SD) in vehicle-treated wounds to 1.9 +/- 1.8 mm (mean +/- SD, p < 0.05) when treated with 106 plaque-forming units of an adenovirus containing the platelet-derived growth factor-B, and 0.7 +/- 1.1 mm (mean +/- SD, p < 0.001) when treated with 108 plaque-forming units of an adenovirus containing the platelet-derived growth factor-B. Ischemic excisional wounds treated with 108 plaque-forming units of an adenovirus containing the platelet-derived growth factor-B even healed more rapidly than non-ischemic excisional wounds treated with vehicle (p < 0.05). In contrast, 5 microg of platelet-derived growth factor-BB protein (n = 2) resulted in only modest granulation tissue at the margin, but no significant differences in epithelial gap (3 +/- 0.6 mm, mean +/- SD). Plaque-forming units (106 or 108) of an adenovirus containing the beta-galactosidase transgene (n = 4) impaired wound re-epithelialization with an epithelial gap of 5.11 +/- 0.69 mm, mean +/- SD, p < 0.004, and 3.8 +/- 0.57 mm, mean +/- SD, p < 0.07, respectively. Adenoviral-mediated gene transfer of platelet-derived growth factor-B overcame the ischemic defect in wound healing and offers promise in the treatment of chronic nonhealing wounds. The vulnerary effects of platelet-derived growth factor-B overexpression were sufficient to overcome the adverse effects of the adenovirus or transgene on wound healing.
Collapse
Affiliation(s)
- K W Liechty
- The Children's Institute for Surgical Science at The Children's Hopsital of Philadelphia, The University of Pennsylvania School of Medicine 19104, USA
| | | | | | | | | | | |
Collapse
|
49
|
Moroianu J, Blobel G, Radu A. RanGTP-mediated nuclear export of karyopherin alpha involves its interaction with the nucleoporin Nup153. Proc Natl Acad Sci U S A 1997; 94:9699-704. [PMID: 9275187 PMCID: PMC23253 DOI: 10.1073/pnas.94.18.9699] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Using binding assays, we discovered an interaction between karyopherin alpha2 and the nucleoporin Nup153 and mapped their interacting domains. We also isolated a 15-kDa tryptic fragment of karyopherin beta1, termed beta1*, that contains a determinant for binding to the peptide repeat containing nucleoporin Nup98. In an in vitro assay in which export of endogenous nuclear karyopherin alpha from nuclei of digitonin-permeabilized cells was quantitatively monitored by indirect immunofluorescence with anti-karyopherin alpha antibodies, we found that karyopherin alpha export was stimulated by added GTPase Ran, required GTP hydrolysis, and was inhibited by wheat germ agglutinin. RanGTP-mediated export of karyopherin alpha was inhibited by peptides representing the interacting domains of Nup153 and karyopherin alpha2, indicating that the binding reactions detected in vitro are physiologically relevant and verifying our mapping data. Moreover, beta1*, although it inhibited import, did not inhibit export of karyopherin alpha. Hence, karyopherin alpha import into and export from nuclei are asymmetric processes.
Collapse
Affiliation(s)
- J Moroianu
- Laboratory of Cell Biology, Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10021, USA
| | | | | |
Collapse
|
50
|
Abstract
We have cloned and sequenced cDNA for human karyopherin beta2, also known as transportin. In a solution binding assay, recombinant beta2 bound directly to recombinant nuclear mRNA-binding protein A1. Binding was inhibited by a peptide representing A1's previously characterized M9 nuclear localization sequence (NLS), but not by a peptide representing a classical NLS. As previously shown for karyopherin beta1, karyopherin beta2 bound to several nucleoporins containing characteristic peptide repeat motifs. In a solution binding assay, both beta1 and beta2 competed with each other for binding to immobilized repeat nucleoporin Nup98. In digitonin-permeabilized cells, beta2 was able to dock A1 at the nuclear rim and to import it into the nucleoplasm. At low concentrations of beta2, there was no stimulation of import by the exogenous addition of the GTPase Ran. However, at higher concentrations of beta2 there was marked stimulation of import by Ran. Import was inhibited by the nonhydrolyzable GTP analog guanylyl imidodiphosphate by a Ran mutant that is unable to hydrolyze GTP and also by wheat germ agglutinin. Consistent with the solution binding results, karyopherin beta2 inhibited karyopherin alpha/beta1-mediated import of a classical NLS containing substrate and, vice versa, beta1 inhibited beta2-mediated import of A1 substrate, suggesting that the two import pathways merge at the level of docking of beta1 and beta2 to repeat nucleoporins.
Collapse
Affiliation(s)
- N Bonifaci
- Laboratory of Cell Biology, Howard Hughes Medical Institute, The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA
| | | | | | | |
Collapse
|