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Seixas F, Gama A, Alvura N, Lourenço L, Pires M. Uterine Adenomyosis, Pyometra and Leiomyoma in a Lion. J Comp Pathol 2022. [DOI: 10.1016/j.jcpa.2021.11.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Gama A, Castro M, Pires I, Seixas F, Pinto M, Pires M, Coutinho T, Lopes A, Bastos E. Parasitic Pneumonia Iin Roe Deer (Capreolus capreolus): First Molecular Identification of Dictyocaulus Capreolus in Portugal. J Comp Pathol 2022. [DOI: 10.1016/j.jcpa.2021.11.134] [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: 10/18/2022]
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Nascimento-Gonçalves E, Seixas F, Silva M, Fardilha M, Ferreira R, Neuparth MJ, Faustino-Rocha AI, Colaço B, Venâncio C, Barros L, Ferreira ICFR, Oliveira MM, Peixoto F, Rosa E, Oliveira PA. The influence of Castanea sativa Mill. flower extract on hormonally and chemically induced prostate cancer in a rat model. Food Funct 2021; 12:2631-2643. [PMID: 33645604 DOI: 10.1039/d1fo00029b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Prostate cancer (PCa) is one of the most common cancers in men, with a huge impact on their health. The use of Castanea sativa Mill. flowers (CFs) in beverages has been reported, through ancestral claims, as having health benefits. In vitro research has evidenced the properties of CFs, such as antitumor and antioxidant activities. This study aimed to evaluate the effects of CF extract in an animal model of PCa. Forty male Wistar Unilever rats were randomly assigned to four groups: control, induced, control + CF, and induced + CF groups. Animals from the induced groups were exposed to a multistep protocol for PCa induction. The CF extract, rich in trigalloyl-HHDP-glucoside and obtained via decoction, was administered to the CF groups in drinking water (3 mg per animal per day) for 49 weeks. Animals were sacrificed at 61 weeks of age. Regarding the effects of CFs on dorsolateral prostate tumorigenesis, no significant differences were observed between the induced and induced + CF groups. However, animals exposed to the CF extract showed fewer inflammation areas on the dorsolateral prostate lobe than those not exposed to CF. Moreover, the CF extract alleviated the hepatic oxidative stress associated with the multistep protocol, resulting in lower levels of lipid peroxidation. These results suggest that CF extract has antioxidant and anti-inflammatory properties.
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Affiliation(s)
- E Nascimento-Gonçalves
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal.
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Oliveira PA, Seixas F. Re: A study in a rat initiation-promotion bladder tumour model demonstrated no promoter/progressor potential of dapagliflozin. Regul Toxicol Pharmacol 2019; 106:346. [PMID: 31085249 DOI: 10.1016/j.yrtph.2019.05.010] [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] [Received: 04/08/2019] [Accepted: 05/08/2019] [Indexed: 10/26/2022]
Affiliation(s)
- P A Oliveira
- Department of Veterinary Sciences, School of Agrarian Sciences, University of Trás-os-Montes and Alto Douro, UTAD, 5001-911, Vila Real, Portugal; Center for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro, UTAD, 5001-911, Vila Real, Portugal.
| | - F Seixas
- Department of Veterinary Sciences, School of Agrarian Sciences, University of Trás-os-Montes and Alto Douro, UTAD, 5001-911, Vila Real, Portugal; CECAV, University of Trás-os-Montes and Alto Douro, UTAD, 5001-911, Vila Real, Portugal.
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Pires M, Lopes D, Rodrigues E, Seixas F, Payan-Carreira R. The carcinoembryonic antigen: A predictor for endometrial lesions in the cat? J Comp Pathol 2019. [DOI: 10.1016/j.jcpa.2018.10.078] [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]
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Pires M, Catarino J, Vilhena H, Faim S, Neves T, Freire A, Seixas F, Payan-Careira R. Canine monophasic teratoma co-existing with a uterine adenocarcinoma. J Comp Pathol 2019. [DOI: 10.1016/j.jcpa.2018.10.085] [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]
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Freitas E, Seixas F, Radar A, Payan-Carreira R, Pires M. Expression of Matrix Metalloproteinases in Feline Endometrial Adenocarcinoma. J Comp Pathol 2018. [DOI: 10.1016/j.jcpa.2017.10.077] [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: 10/18/2022]
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Seixas F, Antunes D, Pires M. Immunohistochemical Analysis of T Lymphocytes (CD3 + ) in Feline Mammary Lesions. J Comp Pathol 2018. [DOI: 10.1016/j.jcpa.2017.10.096] [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: 10/18/2022]
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Nascimento V, Silva A, Seixas F, Pinto M, Gama A, Lourenço L, Vieira A, Pires M. Evaluation of Antigenic Preservation in Histological Slides Stored at Different Temperatures. J Comp Pathol 2018. [DOI: 10.1016/j.jcpa.2017.10.118] [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: 11/16/2022]
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Marques O, Canadas A, Faria F, Oliveira E, Amorim I, Seixas F, Gama A, Lobo-da-Cunha A, Silva BMD, Porto G, Lopes C. Expression of iron-related proteins in feline and canine mammary gland reveals unexpected accumulation of iron. Biotech Histochem 2017; 92:584-594. [PMID: 29172705 DOI: 10.1080/10520295.2017.1369160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Dysregulation of cellular iron homeostasis in human breast cancer is reflected by the altered expression of regulatory proteins. The expressions of iron-related proteins in the mammary glands of cats and dogs have not been assessed. We evaluated the expressions of ferritin, ferroportin, hepcidin and transferrin receptor 1 in benign and malignant mammary gland lesions in cats and dogs. Iron deposition was detected using Perls' Prussian blue staining. We found no major differences in the expression of iron-related proteins between benign and malignant mammary gland lesions in either cats or dogs; however, these species exhibited accumulation of iron in benign lesions. Our findings provide an explanation for the absence of higher iron requirements by tumor cells in these animals. Further investigation of local iron homeostasis in cats and dogs and differences in their physiology compared to human breast cancer is required.
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Affiliation(s)
- O Marques
- a Unit for Multidisciplinary Biomedical Research (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,c Basic and Clinical Research on Iron Biology, Molecular and Cell Biology Institute (IBMC) University of Porto , Porto.,d Institute for Research and Innovation in Health Sciences (i3S), University of Porto , Porto
| | - A Canadas
- b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto
| | - F Faria
- b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto
| | - E Oliveira
- a Unit for Multidisciplinary Biomedical Research (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,e Laboratory of Cell Biology, Department of Microscopy , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto
| | - I Amorim
- b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,d Institute for Research and Innovation in Health Sciences (i3S), University of Porto , Porto.,f Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), University of Porto , Porto
| | - F Seixas
- g Centre of Animal and Veterinary Sciences, University of Trás-os-Montes e Alto Douro (CECAV-UTAD) , Vila Real
| | - A Gama
- g Centre of Animal and Veterinary Sciences, University of Trás-os-Montes e Alto Douro (CECAV-UTAD) , Vila Real
| | - A Lobo-da-Cunha
- a Unit for Multidisciplinary Biomedical Research (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,e Laboratory of Cell Biology, Department of Microscopy , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto
| | - B Martins da Silva
- a Unit for Multidisciplinary Biomedical Research (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto
| | - G Porto
- b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,c Basic and Clinical Research on Iron Biology, Molecular and Cell Biology Institute (IBMC) University of Porto , Porto.,d Institute for Research and Innovation in Health Sciences (i3S), University of Porto , Porto.,e Laboratory of Cell Biology, Department of Microscopy , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,f Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), University of Porto , Porto.,g Centre of Animal and Veterinary Sciences, University of Trás-os-Montes e Alto Douro (CECAV-UTAD) , Vila Real.,h Hematology Service, Santo António Hospital, Porto Hospital Centre
| | - C Lopes
- b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,i Department of Pathology , Portuguese Oncology Institute (IPO) , Porto , Portugal
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Pina J, Gama A, Pires M, Seixas F. Immunohistochemical Expression of TGF-β1 in Feline and Canine Mammary Lesions. J Comp Pathol 2017. [DOI: 10.1016/j.jcpa.2016.11.205] [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]
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Seixas F, Palmeira C, Pires MA, Lopes C. Mammary Invasive Micropapillary Carcinoma in Cats: Clinicopathologic Features and Nuclear DNA Content. Vet Pathol 2016; 44:842-8. [DOI: 10.1354/vp.44-6-842] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [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
Invasive micropapillary carcinoma (IMC) is a variant of infiltrating ductal carcinoma of the breast associated with poor outcome. In this study, we report 16 carcinomas of the feline mammary gland displaying histologic features that correspond to IMC of the breast in women. The clinicopathologic findings, overall survival time, disease-free survival time, and nuclear DNA content of these cats were compared with 65 more common invasive mammary carcinomas (other feline mammary carcinoma [FMC]) of nonspecified type. IMC was associated with larger tumor size, higher histologic grade ( P < .0001), deeper muscle invasion ( P = .004), and more frequent lymphovascular invasion and nodal metastases ( P = .009 and P = .001, respectively) than other FMCs. The aneuploid pattern was more frequent in IMC lesions. IMCs were also associated with lower survival rates. In summary, all cases of feline IMC were associated with clinicopathologic features of high biologic aggressiveness and should be classified as independent histologic types of FMC.
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Affiliation(s)
- F. Seixas
- Veterinary Sciences Department, Centre of Animal and Veterinary Sciences, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
| | - C. Palmeira
- Immunology Department, Portuguese Institute of Oncology, and Pathology Department, Fernando Pessoa University, Porto, Portugal
| | - M. A. Pires
- Veterinary Sciences Department, Centre of Animal and Veterinary Sciences, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
| | - C. Lopes
- Molecular Pathology and Immunology Department, Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, and Pathology Department, Portuguese Institute of Oncology, Porto, Portugal
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Teixeira-Guedes C, Faustino-Rocha A, Talhada D, Andrade A, Pacheco R, Gil da Costa R, Duarte J, Ferreira R, Seixas F, Oliveira P. Case Report: A Rat Hepatic Schwannoma. J Comp Pathol 2014. [DOI: 10.1016/j.jcpa.2013.11.155] [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]
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Abstract
The application of nanotechnology to medicine can provide important benefits, especially in oncology, a fact that has resulted in the emergence of a new field called Nanooncology. Nanoparticles can be engineered to incorporate a wide variety of chemotherapeutic or diagnostic agents. A nanocapsule is a vesicular system that exhibits a typical core-shell structure in which active molecules are confined to a reservoir or within a cavity that is surrounded by a polymer membrane or coating. Delivery systems based on nanocapsules are usually transported to a targeted tumor site and then release their contents upon change in environmental conditions. An effective delivery of the therapeutic agent to the tumor site and to the infiltrating tumor cells is difficult to achieve in many cancer treatments. Therefore, new devices are being developed to facilitate intratumoral distribution, to protect the active agent from premature degradation and to allow its sustained and controlled release. This review focuses on recent studies on the use of nanocapsules for cancer therapy and diagnosis.
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Affiliation(s)
- V Yurgel
- Grupo de Pesquisa em Oncologia Celular e Molecular, Programa de Pós-Graduação em Biotecnologia, Unidade de Biotecnologia, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Campus Universitário, 96010-900 Pelotas, RS, Brasil
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Seixas F, Travassos P, Santos N, Gama A, Pires M. Pulmonary Nematodiasis Compatible with Aelurostrongylus abstrusus Infection in a Wild Cat (Felis silvestris). J Comp Pathol 2010. [DOI: 10.1016/j.jcpa.2010.09.171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gil da Costa RM, Oliveira JP, Saraiva AL, Seixas F, Faria F, Gärtner F, Pires MA, Lopes C. Immunohistochemical Characterization of 13 Canine Renal Cell Carcinomas. Vet Pathol 2010; 48:427-32. [DOI: 10.1177/0300985810381909] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Canine renal cell carcinomas (RCCs) are uncommon aggressive tumors that occur mainly in middle-aged male dogs. Their histologic classification bears no relationship with prognosis, and little information is available concerning their immunohistochemical properties. In this retrospective study, formalin-fixed, paraffin-embedded tissues from 13 canine RCCs were retrieved from the archives, classified histologically, and evaluated immunohistochemically. The dogs were 7 males and 6 females (1 spayed) of 10 different breeds, averaging 8 years in age. The tumors were classified as papillary, tubulopapillary, papillary–cystic, solid, or sarcomatoid. All 13 tumors were immunohistochemically positive for uromodulin, 12 for c-KIT, 11 for vimentin, 9 for wide-spectrum-screening cytokeratins, 7 for cytokeratins AE1/AE3 and carcinoembryonic antigen, 4 for cytokeratins CAM 5.2, and 3 for CD10. All 3 solid RCCs expressed vimentin, c-KIT, and carcinoembryonic antigen and were negative for cytokeratins. All 7 papillary and tubulopapillary tumors expressed vimentin; 6 (86%), cytokeratins; and 6 (86%), c-KIT. Both papillary–cystic RCCs were positive for cytokeratins and c-KIT and negative for vimentin. These results indicate that the different histologic types of RCC have characteristic immunohistochemical profiles and that c-KIT may be involved in the pathogenesis of canine RCC.
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Affiliation(s)
- R. M. Gil da Costa
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - J. P. Oliveira
- CECAV, University of Trás-os-Montes e Alto-Douro, Vila Real, Portugal
| | - A. L. Saraiva
- Gram Laboratório de Anatomia Patológica Veterinária, Maia, Portugal
| | - F. Seixas
- CECAV, University of Trás-os-Montes e Alto-Douro, Vila Real, Portugal
| | - F. Faria
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - F. Gärtner
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
- Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
| | - M. A. Pires
- CECAV, University of Trás-os-Montes e Alto-Douro, Vila Real, Portugal
| | - C. Lopes
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
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Pires MA, Seixas F, Palmeira C, Payan-Carreira R. Histopathologic and Immunohistochemical Exam in One Case of Canine Endometrial Adenocarcinoma. Reprod Domest Anim 2009; 45:545-9. [DOI: 10.1111/j.1439-0531.2008.01243.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Affiliation(s)
- R Payan-Carreira
- Centre for Studies on Agricultural and Veterinary Sciences, Universidade de Trás-os-Montes e Alto Douro, Apartado 1013, 5000-911 Vila Real, Portugal
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Affiliation(s)
- F Seixas
- Department of Veterinary Sciences, Centre for Studies on Agricultural and Veterinary Sciences, University of Trás-os-Montes e Alto Douro, Apartado 1013, 5000-911 Vila Real, Portugal
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Pires MA, Seixas F, Pires I, Queiroga F. Mammary neoplasia with lung metastasis in a rat (Rattus norvegicus). Vet Rec 2003; 153:783-4. [PMID: 14735996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Affiliation(s)
- M A Pires
- Clinicas Veterinárias-CECAV, Universidade de Trás-os-Montes e Alto Douro, 5000-911, Vila Real, Portugal
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Seixas F, Travassos P, Pinto M, Pires I, Pires MA. Straelensiosis in a dog in Portugal. Vet Rec 2003; 153:156. [PMID: 12934804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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Mezochow J, Miller S, Seixas F, Frances RJ. The impact of cost containment on alcohol and drug treatment. Hosp Community Psychiatry 1987; 38:506-10. [PMID: 3110043 DOI: 10.1176/ps.38.5.506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Hospitals offering alcohol and drug treatment programs that meet certain criteria are currently exempt from Medicare's prospective payment system, which was introduced in October 1983 as a means of containing medical costs. Substance abuse experts have successfully lobbied for changes in the alcohol and drug diagnosis-related groups (DRGs) on which reimbursement is based so that they now more accurately reflect patterns of inpatient detoxification and rehabilitation. However, major adjustments are still necessary to protect the quality of care and financial diversity of substance abuse treatment programs. Differences in types of treatment facilities must be considered in order to prevent a major redistribution of funds away from facilities offering specialized care. Incentives to reduce costs must be balanced with a determination to maintain high-quality care.
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