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1.
Medicina (Kaunas) ; 59(12)2023 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-38138261

RESUMO

Background and Objectives: This study reports a case of a 62-year-old patient experiencing a significant decline in vision over the past three months. The initial best-corrected visual acuity (BCVA) of 20/20 in both eyes diminished to 20/200 in the right eye (RE) and counting fingers (CF) in the left eye (LE) within this timeframe. The patient was diagnosed with stage 4 ovarian cancer just one month before the significant vision deterioration. Materials and Methods: A thorough ophthalmologic examination revealed a notable progression of cataracts and the presence of subretinal fluid on the posterior pole, accompanied by choroidal thickening. The right eye exhibited multifocal, orange-pigmented, and elevated choroidal lesions, while the left eye's fundus examination was impeded by dense cataracts. Optical coherence tomography (OCT) revealed bilateral choroidal thickening with overlying folds and subretinal fluid, and ultrasound imaging of the choroidal lesions indicated moderate homogenous internal reflectivity. Results: The patient received a diagnosis of BDUMP (bilateral diffuse uveal melanocytic proliferation), a paraneoplastic syndrome marked by simultaneous, bilateral, painless vision loss and the rapid onset of bilateral cataracts with serous retinal detachments. Despite cataract extraction, the expected visual recovery was not achieved (RE: CF; LE: 2/200, respectively). Plasmapheresis showed some success in stabilizing vision loss attributed to serous retinal detachments. Conclusions: BDUMP necessitates addressing the underlying malignancy for effective treatment. Left untreated, it can lead to near blindness within a year. The prognosis remains grim, with an average survival time ranging from 12 to 15.7 months from the time of diagnosis. Considering this case report, it is crucial to establish effective management plans and further investigate potential treatment methods and predictive markers centered around BDUMP. Collaboration between healthcare professionals and researchers is crucial in addressing the complexities of BDUMP, as the timely diagnosis and treatment of the disease remains a top priority.


Assuntos
Catarata , Síndromes Paraneoplásicas Oculares , Descolamento Retiniano , Humanos , Pessoa de Meia-Idade , Descolamento Retiniano/terapia , Descolamento Retiniano/complicações , Síndromes Paraneoplásicas Oculares/diagnóstico , Síndromes Paraneoplásicas Oculares/patologia , Síndromes Paraneoplásicas Oculares/terapia , Corioide , Proliferação de Células
2.
Pharmaceuticals (Basel) ; 16(7)2023 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-37513963

RESUMO

Recently, stable gastric pentadecapeptide BPC 157 therapy by activation of collateral pathways counteracted various occlusion/occlusion-like syndromes, vascular, and multiorgan failure, and blood pressure disturbances in rats with permanent major vessel occlusion and similar procedures disabling endothelium function. Thereby, we revealed BPC 157 cytoprotective therapy with strong vascular rescuing capabilities in glaucoma therapy. With these capabilities, BPC 157 therapy can recover glaucomatous rats, normalize intraocular pressure, maintain retinal integrity, recover pupil function, recover retinal ischemia, and corneal injuries (i.e., maintained transparency after complete corneal abrasion, corneal ulceration, and counteracted dry eye after lacrimal gland removal or corneal insensitivity). The most important point is that in glaucomatous rats (three of four episcleral veins cauterized) with high intraocular pressure, all BPC 157 regimens immediately normalized intraocular pressure. BPC 157-treated rats exhibited normal pupil diameter, microscopically well-preserved ganglion cells and optic nerve presentation, normal fundus presentation, nor- mal retinal and choroidal blood vessel presentation, and normal optic nerve presentation. The one episcleral vein rapidly upgraded to accomplish all functions in glaucomatous rats may correspond with occlusion/occlusion-like syndromes of the activated rescuing collateral pathway (azygos vein direct blood flow delivery). Normalized intraocular pressure in glaucomatous rats corresponded to the counteracted intra-cranial (superior sagittal sinus), portal, and caval hypertension, and aortal hypotension in occlusion/occlusion-like syndromes, were all attenuated/eliminated by BPC 157 therapy. Furthermore, given in other eye disturbances (i.e., retinal ischemia), BPC 157 instantly breaks a noxious chain of events, both at an early stage and an already advanced stage. Thus, we further advocate BPC 157 as a therapeutic agent in ocular disease.

3.
Case Rep Ophthalmol ; 11(2): 395-401, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32999667

RESUMO

We describe a case of optical coherence tomography angiography (OCTA) changes in the foveal avascular zone (FAZ) in a patient that had suffered Berlin's edema after a whiplash neck injury. The patient reported central scotoma throughout the 1-year follow-up, confirmed by visual field examination. OCTA showed FAZ enlargement of the left eye as compared to the healthy right eye in the superficial capillary layer and even more in the deep capillary layer. To the best of our knowledge, FAZ enlargement has not been previously described by OCTA after whiplash-related macular injury.

4.
Ophthalmic Surg Lasers Imaging Retina ; 49(9): e89-e92, 2018 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-30222825

RESUMO

A patient presented with a large chronic macular hole (MH) of 700 µm. Best-corrected visual acuity (BCVA) was 20/200. Since the MHs edges were attached and stiff, an autologous neurosensory retinal flap was harvested and placed into the MH to close it. Perfluoro-n-octane heavy liquid (PFC) was instilled over the flap and exchanged with silicone oil (1,000 cs). Seven days postoperatively, the MH was closed, with a BCVA of 20/80 that improved to 20/60 at months 1 and 3. Optical coherence tomography and angiography showed patch incorporation with fovea formation and normal circulation. [Ophthalmic Surg Lasers Imaging Retina. 2018;49:e89-e92.].


Assuntos
Retalhos de Tecido Biológico , Retina/transplante , Perfurações Retinianas/cirurgia , Tamponamento Interno/métodos , Fluorocarbonos/administração & dosagem , Humanos , Masculino , Pessoa de Meia-Idade , Decúbito Ventral , Perfurações Retinianas/diagnóstico por imagem , Perfurações Retinianas/fisiopatologia , Estudos Retrospectivos , Tomografia de Coerência Óptica , Transplante Autólogo , Acuidade Visual/fisiologia , Vitrectomia
5.
Case Rep Ophthalmol ; 9(3): 484-486, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30631276

RESUMO

Leishmania donovani is a human blood parasite that belongs to the genus Leishmania. We would like to present a case of late Leishmania donovani endophthalmitis in one eye of a patient that underwent simultaneous bilateral grade 3 cataract surgery.

6.
Exp Eye Res ; 136: 9-15, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25912999

RESUMO

Based on its healing effects in various tissues, we hypothesized that the stable gastric pentadecapeptide BPC 157 heals corneal ulcerations in rats and effects corneal transparency. We made a penetrant linear 2-mm incision in the paralimbal region of the left cornea at the 5 o'clock position with a 20-gauge MVR incision knife at 45° under an operating microscope. Medication was BPC 157 (2 pg/mL, 2 ng/mL, and 2 µg/mL distilled water, two eye drops/left rat eye) immediately after injury induction and then every 8 h up to 120 h; controls received an equal volume of distilled water. In contrast to the poor healing response in controls, BPC 157 significantly accelerated the healing process in 2 µg and 2 ng BPC 157-treated eyes, starting 24 h after the injury, and the fluorescein and Seidel tests became negative. The epithelial defects were completely healed at 72 h (2 µg BPC 157-treated group) and at 96 h (2 ng BPC 157-treated group) after injury. Aqueous cells were absent at 96 h and 120 h after injury in the 2 µg and 2 ng BPC 157-treated groups, respectively. In conclusion, BPC 157 effects the rapid regaining of corneal transparency. Whereas controls developed new vessels that grew from the limbus to the penetrated area, BPC 157-treated rats generally had no new vessels, and those that did form in the limbus did not make contact with the penetrated area. Thus, BPC 157 eye drops successfully close perforating corneal incisions in rats.


Assuntos
Antiulcerosos/uso terapêutico , Perfuração da Córnea/tratamento farmacológico , Modelos Animais de Doenças , Fragmentos de Peptídeos/uso terapêutico , Proteínas/uso terapêutico , Cicatrização/efeitos dos fármacos , Administração Tópica , Animais , Perfuração da Córnea/patologia , Úlcera da Córnea/tratamento farmacológico , Úlcera da Córnea/patologia , Fluoresceína , Corantes Fluorescentes , Fluorofotometria , Masculino , Soluções Oftálmicas , Ratos , Ratos Wistar
7.
Retina ; 34(4): 719-24, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23975006

RESUMO

PURPOSE: To investigate the efficiency of intravitreal dexamethasone implant in patients with chronic diabetic macular edema nonresponsive to three consecutive monthly intravitreal injections of anti-vascular endothelial growth factor administered previously. METHODS: Fifteen patients (16 eyes) were included in this 4-month prospective clinical trial. Main observed outcomes were the changes between initial and monthly visits in best-corrected visual acuity, central foveal thickness, and intraocular pressure (IOP). Patients included had central foveal thickness of >225 µm (measured by optical coherence tomography) and were nonresponsive to previously administered 3 consecutive monthly intravitreal injections of 1.25-mg bevacizumab. Administration of intravitreal dexamethasone implant was performed at baseline, and patients were followed-up monthly. RESULTS: Statistically significant changes from baseline were observed in best-corrected visual acuity (at 2 months), central foveal thickness (at 1, 2, and 3 months), and IOP (at Months 1, 2, and 3) as follows: mean best-corrected visual acuity significantly increased from 0.29 Snellen lines at baseline to 0.39 lines after 2 months (P = 0.0381). At Months 1, 2, and 3, the mean central foveal thickness significantly decreased, from 462 µm at baseline, to 366 µm (P = 0.0343), 346 µm (P = 0.0288), and 355 µm (P = 0.0370), respectively. When compared with baseline IOP of 15.38 mmHg (12-19 mmHg), IOP increased significantly at Months 1, 2, and 3: 18.93 mmHg (range, 16-24 mmHg; P = 0.0003), 19.5 mmHg (range, 16-27 mmHg; P = 0.0003), and 17.5 mmHg (range, 15-21 mmHg; P = 0.0048), respectively. CONCLUSION: Dexamethasone intravitreal implant may present an alternative option in the treatment of chronic diabetic macular edema nonresponsive to three consecutive monthly bevacizumab injections administered previously. However, IOP measures were only slightly increased. It seems that the effect of dexamethasone may last till 4 months after initial injection.


Assuntos
Dexametasona/administração & dosagem , Retinopatia Diabética/tratamento farmacológico , Glucocorticoides/administração & dosagem , Edema Macular/tratamento farmacológico , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Idoso , Inibidores da Angiogênese/uso terapêutico , Anticorpos Monoclonais Humanizados/uso terapêutico , Bevacizumab , Doença Crônica , Diabetes Mellitus Tipo 2/complicações , Retinopatia Diabética/fisiopatologia , Implantes de Medicamento , Resistência a Medicamentos , Feminino , Humanos , Pressão Intraocular/efeitos dos fármacos , Edema Macular/fisiopatologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Retina/efeitos dos fármacos , Retina/patologia , Tomografia de Coerência Óptica , Resultado do Tratamento , Acuidade Visual/efeitos dos fármacos , Corpo Vítreo
9.
Med Hypotheses ; 80(4): 431-5, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23357670

RESUMO

Patients with chronic kidney disease (CKD) experience co-morbid illnesses, including cardiovascular disease and retinopathy. Sevelamer hydrochloride (Renagel®); a non-calcium phosphate binder reduces coronary artery and aortic calcification as compared to calcium containing phosphate binders and additionally effects inflammatory biomarkers such as C-reactive protein (CRP), and lowers LDL cholesterol in patients with CKD. Since retinopathy is proven to be associated with increased coronary calcification, shared pathophysiological processes may contribute to both microvascular and macrovascular disease. We here suggest three different mechanisms of possible sevelamer's influence on the retinopathy: (1) by direct effect on the microvasculature through lowering CRP and LDL, involved in endothelial dysfunction and atherogenesis, (2) indirectly by attenuation of vascular calcification of aorta and carotid internal artery, it reduces ischaemia and improves circulation in the opthalmic artery and hence postponing retinopathy, (3) through hypertension by reducing atherosclerosis and calcification of carotid arteries, sevelamer decreases stiffness and intima-media wall thickness, therefore lowering blood pressure, which is well known to increase progression of diabetic retinopathy. So far no studies have yet been published on the direct influence of sevelamer on the retinopathy which we believe has good theoretical background. With its combined macrovascular and microvascular effect, sevelamer could potentially postpone and/or decrease retinopathy in diabetic patients with hypertension, and that are on hemodialysis or even predialysis patients.


Assuntos
Pressão Sanguínea/efeitos dos fármacos , Retinopatia Diabética/tratamento farmacológico , Retinopatia Diabética/metabolismo , Modelos Biológicos , Poliaminas/administração & dosagem , Artéria Retiniana/fisiopatologia , Animais , Quelantes/administração & dosagem , Humanos , Artéria Retiniana/efeitos dos fármacos , Sevelamer
10.
Coll Antropol ; 35 Suppl 2: 15-8, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22220397

RESUMO

Diabetic macular edema is the leading cause of moderate visual deterioration in patients with diabetic retinopathy. Ranibizumab) blocks vascular endothelial growth factor (VEGF) induced hyperpermeability of blood vessels. In this prospective case series we investigated the efficacy and safety of anti-VEGF treatment in reduction of central retinal thickness (CRT) and improvement in visual acuity (VA) in patients with diabetic macular edema (DME). 9 patients were followed up for 6 months and treated monthly with intravitreal ranibizumab. VA and CRT were measured at each visit. Treatment was discontinued as the peak improvement of either parameter was reached and reinstituted in case of deterioration/recurrence of edema. Study endpoints included: VA using ETDRS chart, CRT and number of injections at 6 months. Mean VA from all 9 patients increased by 0.3 lines of logMAR (p < 0.05 compared to baseline), and CRT decreased from 515 +/- 123 microm to 310 +/- 110 microm. The improvement of VA after ranibizumab injection was in correlation with a decrease in CRT. Mean of 4 injections were needed to control the disease during the follow-up period. Ranibizumab treatment was effective in VA and reducing CRT. Several injections were needed to control the disease. Regular OCT examinations and retreatment are advised in order to maintain initially reached VA.


Assuntos
Anticorpos Monoclonais Humanizados/uso terapêutico , Retinopatia Diabética/tratamento farmacológico , Edema Macular/tratamento farmacológico , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Acuidade Visual/efeitos dos fármacos , Retinopatia Diabética/patologia , Seguimentos , Humanos , Edema Macular/patologia , Ranibizumab , Tomografia de Coerência Óptica
11.
Coll Antropol ; 34 Suppl 2: 69-72, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21305727

RESUMO

Macular edema along with macular ischemia is responsible for decreased visual acuity in central retinal vein occlusion. Bevacizumab (Avastin, Genentech) blocks vascular endothelial growth factor (VEGF) induced hyperpermeability of blood vessels. In this prospective case series we investigated the efficacy of anti-VEGF treatment in reduction of central retinal thickness (CRT) and improvement in visual acuity (VA). 25 patients were followed up for 12 months and treated monthly with intravitreal bevacizumab. VA and CRT were measured at each visit. Treatment was discontinued as the peak improvement of either parameter was reached and reinstituted in case of deterioration/recurrence of edema. Study endpoints included: VA using ETDRS charts, CRT and number of injections at 12 months. Mean VA from all 25 patients increased by 3.1 logMAR lines (p < 0.05 compared to baseline). The improvement of VA after bevacizumab injection was in correlation with a decrease in CRT In subgroup analyses, patients receiving bevacizumab injection within the first 3 months after CRVO showed an average VA gain of 4.2 logMAR lines. Mean of 4.5 injections was needed to control the disease during the follow-up period. Bevacizumab treatment was effective in VA and reducing CRT. It appears from subgroup analysis that initiation of treatment early in the course of disease produced better functional outcome. Several injections were needed to control the disease. Regular OCT examinations and retreatment are advised in order to maintain initially reached VA.


Assuntos
Inibidores da Angiogênese/administração & dosagem , Anticorpos Monoclonais/administração & dosagem , Oclusão da Veia Retiniana/tratamento farmacológico , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Acuidade Visual/efeitos dos fármacos , Anticorpos Monoclonais Humanizados , Bevacizumab , Seguimentos , Humanos , Injeções Intravítreas , Estudos Prospectivos , Resultado do Tratamento
12.
Coll Antropol ; 32 Suppl 2: 27-31, 2008 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19138002

RESUMO

Multifocal intraocular lenses (MFIOL) enable good near and far vision after cataract surgery. Excellent results with cataract patients encouraged ophthalmologists to implant MFIOL after clear lens extraction (CLE). There are two types of MFIOL: diffractive and refractive. In our prospective study we compared clinical outcomes after CLE and bilateral implantation of diffractive (Tecnis Multifocal), (N=100 eyes, 50 patients) and refractive (ReZoom), (N=100 eyes, 50 patients) MFIOL to patients with presbyopia and hyperopia. Near and distant uncorrected visual acuity (UCVA), spectacle dependency, subjective satisfaction and visual disturbances were measured and compared between two groups. Patients achieved good near and distant UCVA in both groups. "Tecnis" group had better near UCVA (statistically not significant) and less night time visual disturbances. "ReZoom" group reported less problems with intermediate vision. Diffractive and refractive MFIOL enable high rate of spectacle independency to presbyopic hyperopic patients with low rate of side-effects. Refractive MFIOL provide better intermediate vision and diffractive slightly better near vision and less haloes and glare.


Assuntos
Hiperopia/cirurgia , Lentes Intraoculares , Presbiopia/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Satisfação do Paciente , Facoemulsificação , Pseudofacia , Acuidade Visual
13.
Ophthalmology ; 114(6): 1179-85, 2007 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17544776

RESUMO

OBJECTIVE: To evaluate the efficacy and safety of photodynamic therapy (PDT) with verteporfin combined with intravitreal bevacizumab in choroidal neovascularization (CNV) owing to age-related macular degeneration (AMD) in comparison with individual monotherapies used as controls. DESIGN: Randomized controlled pilot clinical trial. PARTICIPANTS: Males or females, aged > or =50 years, with minimally classic or occult CNV owing to AMD in at least 1 eye that had never been treated previously. METHODS: One hundred sixty-five eyes in 165 subjects (53 males, 112 females) aged between 60 and 87 years (mean [standard deviation]: 75.7 [6.0] years) were randomly assigned to receive either a single PDT session with verteporfin (PDT group; n = 55), or a single administration of intravitreal bevacizumab (1.25 mg; BEV group; n = 55), or their combination (COMB group; n = 55). In the COMB group, bevacizumab was administered within 1 hour of PDT. Subjects were followed up at 1 and 3 months after treatment. Ophthalmic evaluations including optical coherence tomography, fluorescein angiography, and visual acuity (VA) and central foveal thickness (CFT) measurements were performed at each visit. MAIN OUTCOME MEASURES: Changes from baseline in best-corrected VA and CFT measured at 1- and 3-month follow-up visits. RESULTS: One hundred fifty-six subjects (54 BEV, 50 PDT, and 52 COMB) completed the study. At the 3-month follow-up, significant improvements in best-corrected VA were observed in the BEV and COMB groups (0.079 and 0.223 logarithm of the minimum angle of resolution [logMAR], respectively; P<0.0001 for both). In the PDT group, a slight worsening was noted. Significant reductions of CFT were observed in the 3 groups (-34.0 microm [BEV], -59.6 microm [COMB], and -50.5 microm [PDT]; P<0.0001 for all). At the 1-month follow-up, 46 subjects (16 BEV, 29 COMB, and 1 PDT) had an improvement >0.2 logMAR in best-corrected VA; at 3-month follow-up, this improvement persisted in 23 subjects (1 BEV, 22 COMB, and 0 PDT). CONCLUSIONS: Significant improvements in best-corrected VA after 1 month and their maintenance over a 3-month period were observed after verteporfin PDT combined with intravitreal bevacizumab. These results should be confirmed in larger and long-term prospective randomized trials.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Anticorpos Monoclonais/uso terapêutico , Neovascularização de Coroide/tratamento farmacológico , Degeneração Macular/complicações , Fotoquimioterapia , Fármacos Fotossensibilizantes/uso terapêutico , Porfirinas/uso terapêutico , Idoso , Idoso de 80 Anos ou mais , Inibidores da Angiogênese/efeitos adversos , Anticorpos Monoclonais/efeitos adversos , Anticorpos Monoclonais Humanizados , Bevacizumab , Neovascularização de Coroide/etiologia , Quimioterapia Combinada , Feminino , Angiofluoresceinografia , Seguimentos , Humanos , Injeções , Masculino , Pessoa de Meia-Idade , Fármacos Fotossensibilizantes/efeitos adversos , Projetos Piloto , Porfirinas/efeitos adversos , Tomografia de Coerência Óptica , Resultado do Tratamento , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Verteporfina , Acuidade Visual , Corpo Vítreo
14.
Coll Antropol ; 31 Suppl 1: 57-60, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17469752

RESUMO

Blue light can damage retina and cause age related macular degeneration. After cataract surgery and lens removal retina stays unprotected. Blue light filtering intraocular lenses (IOL) increase protection of the retina. In our prospective study we investigated clinical results after bilateral implantation of Acrysof Natural IOL to 30 patients (N = 60 eyes). In a control group (N = 60 eyes, 30 patients), standard acrysof IOL was implanted bilaterally. Uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA) and Nd YAG laser capsulotomy rate were measured and compared with control group. Subjective patient's satisfaction and subjective colour perception were also investigated. There was no significant difference in UCVA, BCVA and Nd YAG laser capsulotomy rate between the two groups. High patient's satisfaction was noticed (96.7% of patients would implant Acrysof Natural IOL again). Acrysof Natural IOL enables good visual acuity VA, low rate of Nd YAG laser capsulotomy and high patient's satisfaction without colour perception disturbances.


Assuntos
Implante de Lente Intraocular , Lentes Intraoculares , Facoemulsificação , Idoso , Catarata/fisiopatologia , Feminino , Humanos , Masculino , Satisfação do Paciente , Acuidade Visual
15.
Coll Antropol ; 31 Suppl 1: 71-5, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17469756

RESUMO

To evaluate photodynamic therapy with verteporfin combined with intravitreal bevacizumab in minimally classic and occult choroidal neovascularization secondary to age-related macular degeneration. 46 eyes of 46 patients (mean age 74.5) included in this prospective, noncomparative, interventional case series. Median follow-up was 24 weeks (12-36). Verteporfin photodynamic therapy (PDT) was followed by 0.05 mL (1.25 mg) of bevacizumab injected intravitreally within 24 hours and again after 6 weeks. Whole procedure was repeated in 3-month intervals in case of leakage. Visual acuity (VA) improved in majority of patients (baseline VA 1.041 log MAR) by mean increase of 1.45 lines (last follow-up) (p = 0.001). Central foveal thickness (CFT) and total macular volume (TMV) decreased by 53 microm (p = 0.03) and 1.04 mm3 (p < 0.001) respectively. No serious complications were observed. Combined treatment may improve outcome of monotherapy. Significant improvement in VA, CFT and TMA was noted in majority of patients and maintained during follow-up.


Assuntos
Inibidores da Angiogênese/administração & dosagem , Anticorpos Monoclonais/administração & dosagem , Neovascularização de Coroide/tratamento farmacológico , Degeneração Macular/complicações , Fotoquimioterapia , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais Humanizados , Bevacizumab , Neovascularização de Coroide/etiologia , Terapia Combinada , Feminino , Humanos , Injeções , Masculino , Pessoa de Meia-Idade , Fármacos Fotossensibilizantes/uso terapêutico , Porfirinas/uso terapêutico , Verteporfina , Corpo Vítreo
16.
Coll Antropol ; 31 Suppl 1: 77-81, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17469757

RESUMO

To evaluate the efficacy and safety of intravitreal bevacizumab in treatment of minimally classic and occult choroidal neovascularization secondary to age-related macular disease 48 eyes of 48 patients (mean age of 74.8) included in this prospective, noncomparative, interventional case series. Median follow-up was 18 weeks (6-24). Intravitreal bevacizumab injection of 0.05 mL (1.25 mg) was administered at baseline and in 6 week intervals until leakage resolved, and repeated in case of leakage recurrence. Visual acuity (VA) improved in the majority of patients (mean baseline VA = 1.078 log MAR) by mean increase of 1.32 lines (last follow-up) (p = 0.001). Central foveal thickness and total macular volume decreased by 51 microm (p = 0.01) and 0.84 mm3 (p < 0.0001) respectively. No serious complications were observed. As initial therapy, intravitreal bevacizumab appears to be safe and effective. A significant functional and anatomical improvement was noted in majority of patients and maintained during follow-up.


Assuntos
Inibidores da Angiogênese/administração & dosagem , Anticorpos Monoclonais/administração & dosagem , Neovascularização de Coroide/tratamento farmacológico , Degeneração Macular/complicações , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais Humanizados , Bevacizumab , Feminino , Humanos , Injeções , Degeneração Macular/fisiopatologia , Masculino , Pessoa de Meia-Idade , Acuidade Visual , Corpo Vítreo
17.
Graefes Arch Clin Exp Ophthalmol ; 245(1): 68-73, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17111146

RESUMO

BACKGROUND: Anti-vascular endothelial growth factor (anti-VEGF) agents have been shown to be effective in the treatment of neovascular age-related macular degeneration (AMD). Efficacy and safety of intravitreally administered bevacizumab (Avastin), a humanized monoclonal anti-VEGF, was assessed in minimally classic and occult subfoveal choroidal neovascularization (CNV) due to AMD. METHODS: A prospective interventional study was carried out. Bevacizumab (1.25 mg) was administered intravitreally on a 6-week basis until macular edema, subretinal fluid, and/or pigment epithelial detachment had resolved. Administration was repeated in case of relapse. Ophthalmic evaluations included a complete ophthalmic examination, measurement of the visual acuity (VA), optical coherence tomography, and fluorescein angiography. Main outcome measures were the changes between baseline and last follow-up visit in best-corrected VA, central foveal thickness (CFT) and total macular volume (TMV). RESULTS: From 102 patients [mean age (range) 74.8 (61-85) years], 102 eyes were included. Median (range) duration of follow-up was 18 (6-24) weeks. Statistically significant changes from baseline were observed in best-corrected VA [increase of 1.29 lines (P=0.001)], CFT [reduction of 56 microm (P=0.01)] and TMV [reduction of 0.80 mm(3) (P<0.0001)]. Positive results were obtained in 65/102 (64%) patients after two to three injections as a mean. In a substantial proportion of patients (38%) followed up for at least 18 weeks, recurrence of leakage requiring additional injections was observed. Treatment was well tolerated; two pigment epithelium rips and ten posterior vitreous detachments were reported. CONCLUSIONS: Short-term results suggest that intravitreally administered bevacizumab (Avastin) is effective in minimally classic and occult CNV due to AMD. Significant improvements in VA, CFT and TMV were obtained and maintained during follow-up. In some patients, however, recurrence of leakage requiring additional intravitreal injection occurred. Maintenance of the effect of bevacizumab and its safety after repeated and prolonged administration have to be investigated in well-controlled studies.


Assuntos
Inibidores da Angiogênese/administração & dosagem , Anticorpos Monoclonais/administração & dosagem , Neovascularização de Coroide/tratamento farmacológico , Degeneração Macular/complicações , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais Humanizados , Bevacizumab , Neovascularização de Coroide/diagnóstico , Neovascularização de Coroide/etiologia , Feminino , Seguimentos , Humanos , Injeções , Pressão Intraocular , Degeneração Macular/diagnóstico , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Tomografia de Coerência Óptica , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Acuidade Visual , Corpo Vítreo
18.
Croat Med J ; 47(1): 59-66, 2006 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-16489698

RESUMO

AIM: To determine pro-inflammatory cytokine secretion from human corneas with different pathology and to establish whether cytokine profile influences corneal graft outcome. METHOD: Secretion of both proinflammatory cytokine interleukin (IL)-1alpha and tumor necrosis factor (TNF)-alpha was measured after cultivation of 47 corneas collected from corneal graft recipients suffering from different corneal diseases. Non-inflammatory corneal diseases were keratoconus (n=8), keratoglobus (n=2), bullous keratopathy (n=11), and Groenouw stromal dystrophy type II (n=2), whereas inflammatory included vascularized corneal scar (n=14), rejected graft (n=6), and corneal ulcer (n=4). Corneas were cultivated at 37 degrees C for 24 hours and frozen until cytokine detection was measured by immunoassay. Donor corneas unsuitable for transplantation were used as controls (n=7). Corneal graft recipients were followed at least 18 months and rejection rate was calculated for each group. RESULTS: The median concentration of IL-1alpha secreted from corneas of recipients with non-inflammatory diseases was 2.47 pg/mm(3) (range, 0.13-9.95). In inflammatory corneal diseases, IL-1alpha concentration was significantly higher (median, 5.92 pg/mm(3); range, 0.48-12.68; P=0.005). IL-1alpha production in controls (median, 0.63 pg/mm3; range, 0.36-1.29 pg/mm(3)) was significantly lower than in inflammatory corneal diseases (P<0.001) and non-inflammatory diseases (P=0.008). Low level of TNF-alpha was detected only in 5 cases of vascularized corneal scars, 3 cases of bullous keratopathy, and 3 cases of graft rejection. Rejection rate was significantly higher in inflammatory than in non-inflammatory group (46% vs <10%, respectively, P=0.008). IL-1alpha and TNF-alpha were absent from all patient's sera, confirming its local intra-ocular production. CONCLUSION: Increased production of IL-1alpha in corneal recipients with inflammatory diseases suggests its role in corneal graft rejection in humans.


Assuntos
Córnea/metabolismo , Transplante de Córnea , Sobrevivência de Enxerto , Interleucina-1/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Adulto , Idoso , Doenças da Córnea/fisiopatologia , Rejeição de Enxerto/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade
19.
Coll Antropol ; 29 Suppl 1: 81-4, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-16193683

RESUMO

We studied IL-1alpha level in corneal scars with/without neo-vascularization. A total of 27 patients underwent grafting for corneal scar. Recipients were grouped according to number of vascularized quadrants (0 to IV/IV): none (n = 12), one (n = 5), two (n = 4) and four (n = 6). Recipient corneas were collected during surgery and IL-1alpha measured by immunoassay. Controls were donor corneas unsuitable for transplantation. Graft rejection rate was calculated for each group. Mean IL-1alpha concentration in corneal scars was 6 +/- 3.93 pg/mm3; significantly higher as compared to controls (1.25 +/- 2.03 pg/mm3). IL-1alpha correlated well with amount of blood vessels, except in IV/IV scars: 5.17 +/- 3.65 pg/mm3 for 0/IV; 8.02 +/- 2.51 pg/mm3 for I/IV; 8.27 +/- 3.62 pg/mm3 for II/IV and 4.47 +/- 5.03 pg/mm3 for IV/IV corneal scars. Vascularization of corneal scar is associated with increased IL-1alpha level (in all but highly vascularized scars), indicating that IL-1alpha promotes early stages of vascularization. Graft rejection rate increases in patients with higher vascularization, independently of IL-1alpha level.


Assuntos
Cicatriz/imunologia , Doenças da Córnea/imunologia , Neovascularização da Córnea/imunologia , Transplante de Córnea , Interleucina-1/metabolismo , Adulto , Idoso , Estudos de Casos e Controles , Cicatriz/patologia , Cicatriz/cirurgia , Doenças da Córnea/patologia , Doenças da Córnea/cirurgia , Neovascularização da Córnea/patologia , Neovascularização da Córnea/cirurgia , Croácia/epidemiologia , Feminino , Rejeição de Enxerto/epidemiologia , Rejeição de Enxerto/imunologia , Humanos , Masculino , Pessoa de Meia-Idade
20.
Coll Antropol ; 29(1): 321-5, 2005 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-16117343

RESUMO

We evaluated the role of human gastric pentadecapeptide BPC 157 in corneal epithelial defects healing in rats. 48 rats, in 4 groups (N=12). Total debridement of corneal epithelium preformed unilaterally and lesions stained and photographed. Animals medicated as follows: distilled water (control group) or BPC 157 2 pg/ml, 2 ng/ml, 2 microg/ml, 2 drops/rat eye started immediately after injury induction, every 8 hours up to 40 hours (i.e., at 0, 8, 16, 24, 32, 40 h). Lesions were photographed before application or sacrifice (at 48 h). Defect area was analyzed using a special program. Through 48 hour period a steady recovery is noted in controls. Recovery was markedly accelerated in eyes on microg- or ng-topical regimen of BPC 157 (p < 0.05). Of note, unlike control lesion present also after 48 h, these lesions disappeared already following 40 h (microg) or 48 h (ng) post-injury. BPC 157 was shown to be effective in promoting corneal defects healing in rats. Results were dose dependent.


Assuntos
Antiulcerosos/farmacologia , Doenças da Córnea/tratamento farmacológico , Fragmentos de Peptídeos/farmacologia , Proteínas/farmacologia , Animais , Doenças da Córnea/veterinária , Epitélio , Masculino , Ratos , Ratos Wistar
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