Base de datos : MEDLINE Búsqueda : C23.550.444 [Categoria DeCS] Referencias encontradas : 29392 [refinar] Mostrando: 1 .. 10   en el formato [Largo]

página 1 de 2940

va a la página

1 / 29392

MEDLINE

selecciona para imprimir Fotocopia

PMID: 29203758 Autor: Stefanski M; Brulinski K; Stefanska M Dirección: Oddzial Chirurgii Klatki Piersiowej, Centrum Pulmonologii I Torakochirurgii, Bystra, Polska. Título: [Diffuse idiopathic pulmonary neuroendocrine cell hyperplasia (dipnech) - an overview of the cases diagnosed at the department of thoracic surgery in the years 2010-2014]. Fuente: Wiad Lek; 70(5):1005-1012, 2017. ISSN: 0043-5147 País de publicación: Poland Idioma: pol Resumen: INTRODUCTION: Pulmonary neuroendocrine cells (PNEC) are present in the normal lungs with the incidence of 1 in 2500 epithelial cells. They usually proliferate in the presence of reactive processes related to inflammation and fibrosis of the lung parenchyma. The division of pulmonary neuroendocrine cell hyperplasia proposed by Travis et al. additionally distinguished diffuse idiopathic pulmonary neuroendocrine cell hyperplasia (DIPNECH) or proliferation that occurs in people without reactive hyperplasia risk factors. The confirmation of the DIPNECH diagnosis requires staining of biopsy specimens using the immunohistochemical technique for neuroendocrine markers. AIM: The aim of this study is to overview the cases of 5 patients in whom the histopathological DIPNECH diagnosis was made in the process of invasive diagnostics performed at the Department of Thoracic Surgery. The aim of the study is to evaluate typical clinical, functional, radiological and histopathological features of this rare disease syndrome. MATERIAL AND METHODS: In the period from April 2010 to June 2014, five patients with lesions in the lungs were subjected to invasive diagnostics. Histopathological and immunohistochemical examinations of the collected specimens were used to make the DIPNECH diagnosis in these patients. The natural history of the disease was traced based on a 5-year follow-up in one of the patients. In addition, we analyzed the literature with regard to the described cases. CONCLUSIONS: Thanks to the early diagnosis of non-specific lesions in the lungs, typical carcinoid which develops on the basis of discussed DIPNECH, was found in the resected material in two out of five operated patients. The accurate diagnosis of DIPNECH allows for the implementation of appropriate treatment and channels further management of the patient into the right direction. Tipo de publicación: JOURNAL ARTICLE

2 / 29392

MEDLINE

selecciona para imprimir Fotocopia Texto completo

PMID: 29181576 Autor: Araújo R; Santos JMO; Fernandes M; Dias F; Sousa H; Ribeiro J; Bastos MMSM; Oliveira PA; Carmo D; Casaca F; Silva S; Medeiros R; Gil da Costa RM Dirección: Molecular Oncology and Viral Pathology Group, IPO Porto Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto), Rua Dr. António Bernardino de Almeida, 4200-072, Porto, Portugal. Título: Expression profile of microRNA-146a along HPV-induced multistep carcinogenesis: a study in HPV16 transgenic mice. Fuente: J Cancer Res Clin Oncol; 144(2):241-248, 2018 Feb. ISSN: 1432-1335 País de publicación: Germany Idioma: eng Resumen: PURPOSE: Persistent human papillomavirus (HPV) infection is associated with the development of certain types of cancer and the dysregulation of microRNAs has been implicated in HPV-associated carcinogenesis. This is the case of microRNA-146a (miR-146a), which is thought to regulate tumor-associated inflammation. We sought to investigate the expression levels of miR-146a during HPV16-mediated carcinogenesis using skin samples from K14-HPV16 transgenic mice which develop the consecutive phases of the carcinogenesis process. METHODS: Female transgenic (HPV ) and wild-type (HPV ) mice were sacrificed at 24-26 weeks-old or 28-30 weeks-old. Chest and ear skin samples from HPV and HPV mice were histologically classified and used for microRNA extraction and quantification by qPCR. RESULTS: Chest skin samples from 24 to 26 weeks-old HPV mice presented diffuse epidermal hyperplasia and only 22.5% showed multifocal dysplasia, while at 28-30 weeks-old all (100.0%) HPV animals showed epidermal dysplasia. All HPV ear skin samples showed carcinoma in situ (CIS). MiR-146a expression levels were higher in HPV compared to HPV mice (p = 0.006). There was also an increase in miR-146a expression in dysplastic skin lesions compared with hyperplasic lesions (p = 0.011). Samples showing CIS had a significant decrease in miR-146a expression when compared to samples showing epidermal hyperplasia (p = 0.018) and epidermal dysplasia (p = 0.009). CONCLUSIONS: These results suggest that HPV16 induces the overexpression of miR-146a in the initial stages of carcinogenesis (hyperplasia and dysplasia), whereas decreases its expression at later stages (CIS). Taken together, these data implicate and suggest different roles of miR-146a in HPV-mediated carcinogenesis. Tipo de publicación: JOURNAL ARTICLE Nombre de substancia: 0 (MicroRNAs); 0 (Mirn146 microRNA, mouse)

3 / 29392

MEDLINE

selecciona para imprimir Fotocopia Texto completo

PMID: 28449099 Autor: Allagnat F; Dubuis C; Lambelet M; Le Gal L; Alonso F; Corpataux JM; Déglise S; Haefliger JA Dirección: Department of Vascular Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland. Título: Connexin37 reduces smooth muscle cell proliferation and intimal hyperplasia in a mouse model of carotid artery ligation. Fuente: Cardiovasc Res; 113(7):805-816, 2017 Jun 01. ISSN: 1755-3245 País de publicación: England Idioma: eng Resumen: Aims: Intimal hyperplasia (IH) is an abnormal response to vessel injury characterized by the dedifferentiation, migration, and proliferation of quiescent vascular smooth muscle cells (VSMC) to form a neointima layer. Vascular connexins (Cx) are involved in the pathophysiology of various vascular diseases, and Cx43, the main Cx expressed in VSMC, has been shown to promote VSMC proliferation and IH. The aim of this study was to investigate the participation of another Cx, namely Cx37, in the formation of the neointima layer. Methods and results: Wild-type (WT) and Cx37-deficient (Cx37-/-) C57BL/6J mice were subjected to carotid artery ligation (CAL), a model of vessel injury and IH. The neointima developed linearly in WT until 28 days post surgery. In contrast, the neointima layer was almost absent 14 days after surgery in Cx37-/- mice, and twice as more developed after 28 days compared to WT mice. This large neointima formation correlated with a two-fold increase in cell proliferation in the media and neointima regions between 14 and 28 days in Cx37-/- mice compared to WT mice. The CAL triggered Cx43 overexpression in the media and neointima layers of ligated carotids in WT mice, and selectively up-regulated Cx37 expression in the media layer, but not in the neointima layer. The de novo expression of Cx37 in human primary VSMC reduced cell proliferation and P-Akt levels, in association with lower Cx43 levels, whereas Cx43 overexpression increased P-Akt levels. Conclusion: The presence of Cx37 in the media layer of injured arteries restrains VSMC proliferation and limits the development of IH, presumably by interfering with the pro-proliferative effect of Cx43 and the Akt pathway. Tipo de publicación: JOURNAL ARTICLE Nombre de substancia: 0 (Connexin 43); 0 (Connexins); 0 (connexin 37); 0 (connexin 43 protein, rat); EC 2.7.11.1 (Proto-Oncogene Proteins c-akt)

4 / 29392

MEDLINE

selecciona para imprimir Fotocopia Texto completo

PMID: 27775690 Autor: Kennedy LL; Meng F; Venter JK; Zhou T; Karstens WA; Hargrove LA; Wu N; Kyritsi K; Greene J; Invernizzi P; Bernuzzi F; Glaser SS; Francis HL; Alpini G Dirección: Research, Central Texas Veterans Health Care System, Temple, TX, USA. Título: Knockout of microRNA-21 reduces biliary hyperplasia and liver fibrosis in cholestatic bile duct ligated mice. Fuente: Lab Invest; 96(12):1256-1267, 2016 12. ISSN: 1530-0307 País de publicación: United States Idioma: eng Resumen: Cholestasis is a condition that leads to chronic hepatobiliary inflammation, fibrosis, and eventually cirrhosis. Many microRNAs (miRs) are known to have a role in fibrosis progression; however, the role of miR-21 during cholestasis remains unknown. Therefore, the aim of this study was to elucidate the role of miR-21 during cholestasis-induced biliary hyperplasia and hepatic fibrosis. Wild-type (WT) and miR-21 mice underwent Sham or bile duct ligation (BDL) for 1 week, before evaluating liver histology, biliary proliferation, hepatic stellate cell (HSC) activation, fibrotic response, and small mothers against decapentaplegic 7 (Smad-7) expression. In vitro, immortalized murine biliary cell lines (IMCLs) and human hepatic stellate cell line (hHSC) were treated with either miR-21 inhibitor or control before analyzing proliferation, apoptosis, and fibrotic responses. In vivo, the levels of miR-21 were increased in total liver and cholangiocytes after BDL, and loss of miR-21 decreased the amount of BDL-induced biliary proliferation and intrahepatic biliary mass. In addition, loss of miR-21 decreased BDL-induced HSC activation, collagen deposition, and expression of the fibrotic markers transforming growth factor-ß1 and α-smooth muscle actin. In vitro, IMCL and hHSCs treated with miR-21 inhibitor displayed decreased proliferation and expression of fibrotic markers and enhanced apoptosis when compared with control treated cells. Furthermore, mice lacking miR-21 show increased Smad-7 expression, which may be driving the decrease in biliary hyperplasia and hepatic fibrosis. During cholestatic injury, miR-21 is increased and leads to increased biliary proliferation and hepatic fibrosis. Local modulation of miR-21 may be a therapeutic option for patients with cholestasis. Tipo de publicación: JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S. Nombre de substancia: 0 (Biomarkers); 0 (MIRN21 microRNA, human); 0 (MIRN21 microRNA, mouse); 0 (MicroRNAs); 0 (Smad7 Protein)

5 / 29392

MEDLINE

selecciona para imprimir Fotocopia Texto completo

PMID: 28461075 Autor: Menet MC; Hebert-Schuster ML; Lahlou N; Marcellin L; Leguy MC; Gayet V; Guibourdenche J Dirección: Department of Biological Endocrinology, CHU Cochin, AP-HP, Paris, France; Faculté de Pharmacie, Université Paris Descartes, Paris, France. Título: rFSH in medically assisted procreation: Evidence for ovarian follicular hyperplasia and interest of mass spectrometry to measure 17-hydroxyprogesterone and Δ4-androstenedione in serum. Fuente: Mol Cell Endocrinol; 450:105-112, 2017 Jul 15. ISSN: 1872-8057 País de publicación: Ireland Idioma: eng Resumen: Ovarian monitoring requires the determination of serum estradiol and progesterone levels. We investigated whole follicular steroidogenesis under rFSH in medically assisted procreation (MAP: 26 IVF, 24 ICSI) compared to 11 controls (IUI). Estrone, estradiol, Δ4-androstenedione, testosterone, progesterone and 17-hydroxyprogesterone were measured by immunoassay and mass spectrometry except for estrogens. At the start of a spontaneous or induced cycle, steroids levels fluctuated within normal ranges: estradiol (314-585 pmol/L), estrone (165-379 pmol/L) testosterone (1.3-1.6 nmol/L), Δ4-androstenedione (4.5-5.6 nmol/L), 17-hydroxyprogesterone (2.1-2.2 nmol/L) and progesterone (1.8-1.9 nmol/L). 17-hydroxyprogesterone, Δ 4-androstenedione and estradiol predominated. Then estradiol and oestrone levels rise, but less markedly for oestrone in IUI. In MAP, rFSH injections induce a sharp increase in estrogens associated with a rise in 17-hydroxyprogesterone and Δ4-androstenedione levels, disrupting oestrogen/androgen ratios. rFSH stimulation induces an ovarian hyperplasia and Δ4pathway which could become abnormal. Determining 17-hydroxyprogesterone and Δ4-androstenedione levels with LC-MS/MS may therefore be useful in managing recurrent MAP failures. Tipo de publicación: JOURNAL ARTICLE Nombre de substancia: 0 (Recombinant Proteins); 409J2J96VR (Androstenedione); 68-96-2 (17-alpha-Hydroxyprogesterone); 9002-68-0 (Follicle Stimulating Hormone)

6 / 29392

MEDLINE

selecciona para imprimir Fotocopia Texto completo

PMID: 29305859 Autor: Zhao Y; Liu Y; Jing Z; Peng L; Jin P; Lin Y; Zhou Y; Yang L; Ren J; Xie Q; Jin X Dirección: Xiamen Key Laboratory of Chiral Drugs, Medical College, Xiamen University, Xiamen 361000, PR China. Título: N-oleoylethanolamide suppresses intimal hyperplasia after balloon injury in rats through AMPK/PPARα pathway. Fuente: Biochem Biophys Res Commun; 496(2):415-421, 2018 02 05. ISSN: 1090-2104 País de publicación: United States Idioma: eng Resumen: Vascular smooth muscle cell (VSMC) proliferation and migration are crucial events in the pathological course of restenosis after percutaneous coronary intervention (PCI). N-oleoylethanolamide (OEA) is a bioactive lipid amide released upon dietary fat digestion with many reported actions. However, the effect of OEA on restenosis after vascular injury remains unknown. Here, we investigated the effects of OEA on intimal hyperplasia after balloon injury in vivo, its effect on VSMC proliferation and migration induced by platelet-derived growth factor (PDGF) stimulation in vitro, and the underlying mechanism underlying these effects. The results showed that OEA-treated rats displayed a significant reduction in neointima formation after balloon injury. In cultured VSMCs, treatment with OEA decreased cell proliferation and migration induced by PDGF. OEA treatment both in vivo and in vitro led to an increase in adenosine monophosphate-activated protein kinase (AMPK) phosphorylation and peroxisome proliferator-activated receptor alpha (PPARα), and a decrease in proliferating cell nuclear antigen (PCNA) and cyclinD1 expression. Pharmacological inhibition of AMPK and PPARα reversed the suppressive effects of OEA on VSMC proliferation and migration, suggesting that the suppressive effect of OEA on VSMC proliferation and migration is mediated through the activation of AMPK and PPARα. In conclusion, our present study demonstrated that OEA attenuated neointima formation in response to balloon injury by suppressing SMC proliferation and migration through an AMPK and PPARα-dependent mechanism. Our data suggests that OEA may be a potential therapeutic agent for restenosis after PCI. Tipo de publicación: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T Nombre de substancia: 0 (Cardiovascular Agents); 0 (Ccnd1 protein, rat); 0 (Endocannabinoids); 0 (Oleic Acids); 0 (PPAR alpha); 0 (Platelet-Derived Growth Factor); 0 (Proliferating Cell Nuclear Antigen); 0 (oleoylethanolamide); 136601-57-5 (Cyclin D1); EC 2.7.11.31 (AMP-Activated Protein Kinases)

7 / 29392

MEDLINE

selecciona para imprimir Fotocopia Texto completo

PMID: 29406925 Autor: Canto MI; Montgomery E Dirección: Department of Medicine, Division of Gastroenterology and Hepatology, Baltimore, Maryland, USA. Título: Wide-area transepithelial sampling with 3-dimensional cytology: Does it detect more dysplasia or yield more hype? Fuente: Gastrointest Endosc; 87(2):356-359, 2018 02. ISSN: 1097-6779 País de publicación: United States Idioma: eng Tipo de publicación: EDITORIAL; COMMENT

8 / 29392

MEDLINE

selecciona para imprimir Fotocopia Texto completo

PMID: 28468161 Autor: Hatamleh MM; Yeung E; Osher J; Huppa C Dirección: *Cranio-Maxillofacial Prosthetics Unit, King's College Hospital NHS Foundation Trust †King's College Hospital NHS Foundation Trust, London, UK. Título: Novel Treatment Planning of Hemimandibular Hyperplasia by the Use of Three-Dimensional Computer-Aided-Design and Computer-Aided-Manufacturing Technologies. Fuente: J Craniofac Surg; 28(3):764-767, 2017 May. ISSN: 1536-3732 País de publicación: United States Idioma: eng Resumen: RATIONALE AND AIM: Hemimandibular hyperplasia is characterized by an obvious overgrowth in the size of the mandible on one side, which can extend up to the midline causing facial asymmetry. Surgical resection of the overgrowth depends heavily on the skill and experience of the surgeon. This report describes a novel methodology of applying three-dimensional computer-aided-design and computer-aided-manufacturing principles in improving the outcome of surgery in 2 mandibular hyperplasia patients. METHODOLOGY: Both patients had their cone beam computer tomography (CBCT) scan performed. CMF Pro Plan software (v. 2.1) was used to process the scan data into virtual 3-dimensional models of the maxilla and mandible. Head tilt was adjusted manually by following horizontal reference. Facial asymmetry secondary to mandibular hypertrophy was obvious on frontal and lateral views. Simulation functions were followed including mirror imaging of the unaffected mandibular side into the hyperplastic side and position was optimized by translation and orientation functions. Reconstruction of virtual symmetry was assessed and checked by running 3-dimensional measurements. Then, subtraction functions were used to create a 3-dimensional template defining the outline of the lower mandibular osteotomy needed. Precision of mandibular teeth was enhanced by amalgamating the CBCT scan with e-cast scan of the patient lower teeth. 3-Matic software (v. 10.0) was used in designing cutting guide(s) that define the amount of overgrowth to be resected. The top section of the guide was resting on the teeth hence ensuring stability and accuracy while positioning it. The guide design was exported as an .stl file and printed using in-house 3-dimensional printer in biocompatible resin. CONCLUSION: Three-dimensional technologies of both softwares (CMF Pro Plan and 3-Matic) are accurate and reliable methods in the diagnosis, treatment planning, and designing of cutting guides that optimize surgical correction of hemimandibular hyperplasia at timely and cost-effect manner. Tipo de publicación: CASE REPORTS; JOURNAL ARTICLE

9 / 29392

MEDLINE

selecciona para imprimir Fotocopia Texto completo

PMID: 28470128 Autor: Parsons BF; Ryder N Dirección: 1 Pacific Clinic Newcastle, HNE Sexual Health, Newcastle, NSW, Australia. Título: Pseudoepitheliomatous hyperplasia causing a painful plaque in a HIV-infected female. Fuente: Int J STD AIDS; 28(7):723-725, 2017 06. ISSN: 1758-1052 País de publicación: England Idioma: eng Resumen: Dermatological conditions are more common and can present atypically, in human immunodeficiency virus-infected individuals. This case report describes a 22-year-old human immunodeficiency virus-positive Caucasian female who presented with a vulval lesion eight weeks after starting antiretroviral treatment. Clinical examination revealed a 2 cm well-demarcated plaque on the outer aspect of the left labium minus. The lesion was tender, no contact bleeding or ulceration present. She was presumptively treated for chancroid and herpes simplex with 500 mg ceftriaxone IM stat, 1 g azithromycin PO stat, and valacyclovir 500 mg BD for five days. The lesion persisted despite treatment, and during follow-up, a punch biopsy was carried out. She was diagnosed with pseudoepitheliomatous hyperplasia of the epidermis. In addition to highlighting this condition that has been previously reported in human immunodeficiency virus/herpes simplex virus co-infection, this case demonstrates that unusual skin presentations must be considered in human immunodeficiency virus-infected individuals and illustrates the importance of biopsy for any non-healing lesions. Tipo de publicación: CASE REPORTS; JOURNAL ARTICLE Nombre de substancia: 0 (Anti-HIV Agents)

10 / 29392

MEDLINE

selecciona para imprimir Fotocopia Texto completo

PMID: 29325246 Autor: Huang RF; Zhang WY; Liu WP; Zhao S; Ye YX; Sun H; Gao LM; Wang JC; Yang QP Dirección: Department of Pathology, West China Hospital, Sichuan University, Chengdu 610041, China. Título: [Diagnostic significance of lymph node core needle biopsy for lymphoproliferative disease: a clinicopathologic study of 1 013 cases]. Fuente: Zhonghua Bing Li Xue Za Zhi; 47(1):19-24, 2018 Jan 08. ISSN: 0529-5807 País de publicación: China Idioma: chi Resumen: To study the clinicopathologic features of lymphoproliferative disease by lymph node core needle biopsy(CNB)and to evaluate the diagnostic significance of CNB for lymphoproliferative disease. The annual distribution, entity constitute, clinical finding, gross feature, morphologic change, affiliate study and repeat biopsy diagnosis of 1 013 cases of lymph node CNB diagnosed at West China Hospital of Sichuan University from January 2009 to December 2015 were investigated. (1) Proportion of lymph node CNB in total amount of biopsy specimens increased from 0.2% in 2009 to 0.8% in 2015.(2) The study cohort included 471 lymphomas, 12 atypical lymphoid hyperplasia (ALH), 136 suspected lymphomas, 372 benign lesions, and 22 cases of descriptive diagnoses. The most common types were diffuse large B cell lymphoma and T-lymphoblastic lymphoma. (3) Majority of patients were adolescents and children younger than 20 years or the elderly older than 60 years. 53.1% CNB tumor specimen consisted of ≥4 tissue cores and 40.5% were >2 cm in length. (4) 104 CNB cases with previous history of excision biopsy was included 45 carcinomas(no metastatic carcinoma was found), 32 lymphomas for treatment observation.1/14 suspicious lymphomas, 1/1 ALH and 3/22 cases benign lesions were diagnosed as lymphoma by repeat biopsy respectively. (5) 217 CNB cases were diagnosed as lymphoma by subsequent CNB (70), or subsequent excision biopsy (147) including 78.5%(73/93) suspected lymphomas, 5/7 ALH and 32.3%(20/62)benign lesions. Lymph node CNB has certain clinical indications, although limited for the diagnosis of lymphoproliferative disorders. Suspected lymphomas and ALH diagnosed by CNB should be followed by repeat tissue biopsy. For the benign lesions by CNB it does not rule out additional biopsy to further investigate the lesion. Tipo de publicación: JOURNAL ARTICLE

---

página 1 de 2940

va a la página

Refinar la búsqueda

Base de datos : MEDLINE

Formulario avanzado

		Buscar	en el campo
1			PalabrasDescriptor de asuntoDescriptor de asunto primarioLímitesAutorPalabras del títuloPalabras del resumenIdiomaPaís de publicaciónNombre de substanciaNombre personal como asuntoRevistaAsunto de RevistaISSNTipo de publicaciónIdentificador únicoMes de ingresoAño de publicaciónTexto completoActualización por claseCategoria DeCSCategoria DeCS explodidaCategoria CIE-10SubSetsPaís de AfiliaciónAfiliaciónAfiliación 2
2	and or and not		PalabrasDescriptor de asuntoDescriptor de asunto primarioLímitesAutorPalabras del títuloPalabras del resumenIdiomaPaís de publicaciónNombre de substanciaNombre personal como asuntoRevistaAsunto de RevistaISSNTipo de publicaciónIdentificador únicoMes de ingresoAño de publicaciónTexto completoActualización por claseCategoria DeCSCategoria DeCS explodidaCategoria CIE-10SubSetsPaís de AfiliaciónAfiliaciónAfiliación 2
3	and or and not		PalabrasDescriptor de asuntoDescriptor de asunto primarioLímitesAutorPalabras del títuloPalabras del resumenIdiomaPaís de publicaciónNombre de substanciaNombre personal como asuntoRevistaAsunto de RevistaISSNTipo de publicaciónIdentificador únicoMes de ingresoAño de publicaciónTexto completoActualización por claseCategoria DeCSCategoria DeCS explodidaCategoria CIE-10SubSetsPaís de AfiliaciónAfiliaciónAfiliación 2

Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPS/OMS - Centro Latinoamericano y del Caribe de Información en Ciencias de la Salud