RESUMO
The physiological role of immune cells in the regulation of postprandial glucose metabolism has not been fully elucidated. We have found that adipose tissue macrophages produce interleukin-10 (IL-10) upon feeding, which suppresses hepatic glucose production in cooperation with insulin. Both elevated insulin and gut-microbiome-derived lipopolysaccharide in response to feeding are required for IL-10 production via the Akt/mammalian target of rapamycin (mTOR) pathway. Indeed, myeloid-specific knockout of the insulin receptor or bone marrow transplantation of mutant TLR4 marrow cells results in increased expression of gluconeogenic genes and impaired glucose tolerance. Furthermore, myeloid-specific Akt1 and Akt2 knockout results in similar phenotypes that are rescued by additional knockout of TSC2, an inhibitor of mTOR. In obesity, IL-10 production is impaired due to insulin resistance in macrophages, whereas adenovirus-mediated expression of IL-10 ameliorates postprandial hyperglycemia. Thus, the orchestrated response of the endogenous hormone and gut environment to feeding is a key regulator of postprandial glycemia.
Assuntos
Tecido Adiposo/efeitos dos fármacos , Hiperglicemia/patologia , Insulina/farmacologia , Lipopolissacarídeos/farmacologia , Macrófagos/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-akt/fisiologia , Serina-Treonina Quinases TOR/metabolismo , Tecido Adiposo/metabolismo , Animais , Glicemia/análise , Gluconeogênese/genética , Hiperglicemia/etiologia , Hiperglicemia/metabolismo , Hipoglicemiantes/farmacologia , Resistência à Insulina , Interleucina-10/fisiologia , Macrófagos/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C3H , Camundongos Knockout , Período Pós-Prandial , Transdução de Sinais , Serina-Treonina Quinases TOR/genética , Proteína 2 do Complexo Esclerose Tuberosa/fisiologiaRESUMO
PURPOSE: To investigate the predictors of macular chorioretinal atrophy, consisting of patchy atrophy (PA) at the macula and choroidal neovascularization (CNV)-related macular atrophy (CNV-MA), during treatment with ranibizumab or aflibercept for myopic CNV (mCNV) and its impact on visual outcomes. METHODS: This retrospective study included 82 eyes with treatment-naïve mCNV who were treated with pro re nata injections of ranibizumab or aflibercept. RESULTS: Nine eyes (11.0%) presented with macular PA at baseline (PA group), and 73 eyes (89.0%) did not (non-PA group). VA improved during the first year in the non-PA group; a similar trend was noted in the PA group until 3 months after initial treatment. This improvement was maintained until 24 months ( P < 0.001) in the non-PA group, but not in the PA group. In the PA group, macular chorioretinal atrophy progressed faster ( P < 0.0001), and CNV-MA was more frequent during the 2 years of treatments ( P = 0.04). Even non-PA group eyes sometimes developed CNV-MA (42% at Month 24) if they had a larger CNV and thinner subfoveal choroidal thickness at baseline, resulting in poorer visual prognosis ( P < 0.01). CONCLUSION: Macular PA at baseline was a risk factor for CNV-MA development and was associated with poor visual outcomes.
Assuntos
Neovascularização de Coroide , Degeneração Macular , Humanos , Ranibizumab/uso terapêutico , Inibidores da Angiogênese/uso terapêutico , Estudos Retrospectivos , Fator A de Crescimento do Endotélio Vascular , Acuidade Visual , Neovascularização de Coroide/diagnóstico , Neovascularização de Coroide/tratamento farmacológico , Neovascularização de Coroide/etiologia , Degeneração Macular/complicações , Atrofia/tratamento farmacológico , Injeções Intravítreas , Tomografia de Coerência Óptica/métodosRESUMO
PURPOSE: The study aims to investigate the 7-year best-corrected visual acuity (BCVA) course after 1-year fixed regimen of intravitreal aflibercept injection (IVA) for neovascular age-related macular degeneration (nAMD) and to identify factors affecting this BCVA. METHODS: This longitudinal, observational study included 63 treatment-naïve eyes (61 patients) with nAMD, treated with 1-year fixed regimen of IVA-3 monthly injections and 4 subsequent bimonthly injections-essentially followed by PRN regimen of IVA but sometimes followed by agent switching, photodynamic therapy (PDT), or vitrectomy, as needed. We assessed BCVA changes over a 7-year period. Morphologically, we assessed central retinal thickness (CRT), central choroidal thickness (CCT), subfoveal pigment epithelial detachment (PED) height, vitreomacular traction/adhesion (VMT/VMA), epiretinal membrane (ERM), and macular atrophy involving the fovea. RESULTS: Logarithm of the minimum angle of resolution (logMAR) BCVA changed from 0.20 ± 0.24 to 0.29 ± 0.45 over 7 years. BCVA improved significantly after years 1 and 2 (P = 0.002 and 0.001, respectively) and then slowly decreased. BCVA after years 3-7 did not significantly differ from baseline. CRT and CCT decreased significantly during follow-up, while PED height did not. VMT/VMA decreased significantly, whereas ERM and macular atrophy increased significantly. Seven-year and baseline BCVA positively correlated (P = 0.007, ß = 0.35). CONCLUSIONS: BCVA was maintained for 7 years in nAMD eyes after 1-year fixed regimen of IVA, essentially followed by PRN regimen, but sometimes followed by agent switching, PDT, or vitrectomy, without severe drug-induced complications. Thus, early diagnosis and treatment of nAMD are essential for maintaining good long-term BCVA, even in eyes with relatively poor baseline vision.
Assuntos
Degeneração Macular , Descolamento Retiniano , Doenças Retinianas , Humanos , Ranibizumab , Inibidores da Angiogênese , Estudos Retrospectivos , Receptores de Fatores de Crescimento do Endotélio Vascular , Proteínas Recombinantes de Fusão/uso terapêutico , Degeneração Macular/tratamento farmacológico , Descolamento Retiniano/diagnóstico , Injeções Intravítreas , Doenças Retinianas/tratamento farmacológico , Atrofia/tratamento farmacológico , Resultado do Tratamento , Tomografia de Coerência ÓpticaRESUMO
PURPOSE: To investigate factors associated with 3-month or 1-year best-corrected visual acuity (BCVA) after vitrectomy with subretinal tissue plasminogen activator injection for submacular hemorrhage (SMH) and to identify the predictors of early displacement. METHODS: This prospective cohort study included consecutive eyes with SMH complicating neovascular age-related macular degeneration or retinal macroaneurysm that underwent vitrectomy with subretinal tissue plasminogen activator injection and were followed up for at least 3 months. Parameters that correlated with 3-month BCVA, 1-year BCVA, and 2-week displacement grade (0-3) were identified. RESULTS: Twenty-nine eyes of 29 patients (73.1 ± 8.4 years; neovascular age-related macular degeneration, 25 eyes) were included. Logarithm of the minimum angle of resolution BCVA improved 3 months after the surgery (baseline, 0.76 [20/115] ± 0.35; 3-month, 0.51 [20/65] ± 0.32; P = 0.006). In multivariable analyses, 1-year logarithm of the minimum angle of resolution BCVA correlated with age ( P = 0.007, ß = 0.39) and SMH recurrence within 1 year after surgery ( P < 0.001, ß = 0.65). Two-week displacement grade correlated with the contrast-to-noise ratio of SMH ( P = 0.001, ß = -0.54). Macular hole occurred in three eyes (10%) with small SMH size and was closed in all eyes via additional vitrectomy with an inverted internal limiting membrane flap technique. CONCLUSION: The recurrence of SMH negatively affected the 1-year visual outcome after vitrectomy with subretinal tissue plasminogen activator injection for SMH. The contrast-to-noise ratio was a useful predictor of early SMH displacement, but not of 1-year BCVA. Further research is necessary to determine the optimal treatment to prevent SMH recurrence.
Assuntos
Degeneração Macular , Ativador de Plasminogênio Tecidual , Humanos , Lactente , Fibrinolíticos/uso terapêutico , Vitrectomia/métodos , Estudos Prospectivos , Resultado do Tratamento , Seguimentos , Hemorragia Retiniana/diagnóstico , Hemorragia Retiniana/cirurgia , Hemorragia Retiniana/complicações , Degeneração Macular/complicações , Estudos RetrospectivosRESUMO
PURPOSE: To investigate the 10-year visual outcome and chorioretinal atrophy after a single intravitreal ranibizumab injection followed by a pro re nata regimen for myopic macular neovascularization in pathologic myopia, and to identify the factors associated with 10-year best-corrected visual acuity (BCVA). METHODS: This retrospective observational study evaluated 26 consecutive treatment-naïve eyes (26 patients) with myopic macular neovascularization in pathologic myopia who underwent a single intravitreal ranibizumab followed by a pro re nata regimen of intravitreal ranibizumab and/or intravitreal aflibercept injection and observed over 10 years. We assessed changes in BCVA and morphological parameters, including the META-PM Study category as a chorioretinal atrophy index. RESULTS: The logarithm of the minimum angle of resolution BCVA changed from 0.36 (Snellen, 20/45) ± 0.39 to 0.39 (20/49) ± 0.36 over 10 years of observation. Compared to baseline, 1-year BCVA improved ( P = 0.002), whereas 2 to 10-year BCVA was not significantly different. Total injection frequency was 3.8 ± 2.6. In none of the eyes, 10-year BCVA was 20/200 or less. Ten-year BCVA correlated with baseline BCVA ( P = 0.01, r = 0.47). The META-PM Study category progressed in 60% of eyes. There were no drug-induced complications. CONCLUSION: Best-corrected visual acuity in eyes with myopic macular neovascularization in pathologic myopia was maintained for 10 years after a single intravitreal ranibizumab followed by a pro re nata regimen without drug-induced complications. The META-PM Study category progressed in 60% of eyes, especially those with older baseline age. Early diagnosis and treatment of myopic macular neovascularization are essential to maintain good long-term BCVA.
Assuntos
Neovascularização de Coroide , Miopia , Humanos , Inibidores da Angiogênese/efeitos adversos , Atrofia/tratamento farmacológico , Neovascularização de Coroide/diagnóstico , Neovascularização de Coroide/tratamento farmacológico , Neovascularização de Coroide/etiologia , Seguimentos , Fundo de Olho , Injeções Intravítreas , Miopia/complicações , Ranibizumab/efeitos adversos , Estudos Retrospectivos , Resultado do Tratamento , Fator A de Crescimento do Endotélio VascularRESUMO
PURPOSE: To investigate predictors of early displacement of submacular hemorrhage (SMH) by simple intravitreal SF6 gas injection. METHODS: This retrospective study included 16 eyes of 16 consecutive patients (age: 74.5 ± 7.7 years; 15 men) with large SMH treated with simple intravitreal SF6 gas before inception of subretinal tissue plasminogen activator injection at our institution. The SMH displacement was graded at 1-week posttreatment as 0, 1, or 2. Central retinal thickness, central choroidal thickness, SMH height, SMH area, disease duration, use of anticoagulant or antiplatelet drugs, and contrast-to-noise ratio (CNR) of SMH on optical coherence tomography images were recorded. Correlations between displacement grading and baseline parameter were analyzed. RESULTS: Univariable correlation analysis revealed association of the 1-week displacement grading with the CNR (P = 0.004; r = -0.68) and SMH height (P = 0.03; r = -0.55). The CNR was most strongly associated with 1-week displacement on multivariable correlation analysis (P = 0.01; ß = -0.60). CONCLUSION: Findings of the present study showed that the CNR of SMH was a useful predictor of early displacement of large SMH after simple intravitreal SF6 gas injection. When vitrectomy with subretinal injection of tissue plasminogen activator is difficult in patients with large SMH, with low CNR on optical coherence tomography, simple intravitreal SF6 gas injection may be a treatment option.
Assuntos
Tamponamento Interno , Ativador de Plasminogênio Tecidual , Idoso , Idoso de 80 Anos ou mais , Tamponamento Interno/métodos , Feminino , Fibrinolíticos/uso terapêutico , Angiofluoresceinografia , Humanos , Injeções Intravítreas , Masculino , Hemorragia Retiniana/diagnóstico , Hemorragia Retiniana/tratamento farmacológico , Estudos Retrospectivos , Tomografia de Coerência Óptica , Acuidade VisualRESUMO
PURPOSE: The purpose of this study was to investigate the predictors of retinal pigment epithelium (RPE) tear development after treatment for neovascular age-related macular degeneration using swept source optical coherence tomography angiography. METHODS: This prospective study included 152 treatment-naïve eyes with neovascular age-related macular degeneration without high myopia that were followed up for 1 year after treatment. Eligible eyes were classified into eyes with or without RPE tear development. They were matched in a 1:2 ratio. The areas of choroidal neovascularization (CNV) and RPE detachment (pigment epithelial detachment [PED]) were measured from optical coherence tomography angiography and OCT en face images, respectively. The optical coherence tomography angiography-specific parameters representing CNV status were analyzed. RESULTS: Eight (5.3%) of the 152 eyes developed RPE tears (RPE tear group). After matching, 16 eyes without RPE tears were analyzed (non-RPE tear group). The ratio of the CNV/PED area was lower in the RPE tear group than that in the non-RPE tear group (P = 0.007). The PED area was broader (P = 0.008), and PED height was greater in the RPE tear group (P = 0.04). Optical coherence tomography angiography-specific parameters did not differ between the two groups. CONCLUSION: Neovascular age-related macular degeneration with pretreatment broad PED, high PED, and small CNV area relative to the PED area has a high risk of RPE tear development after therapy. However, CNV status may not have an association.
Assuntos
Neovascularização de Coroide , Degeneração Macular , Descolamento Retiniano , Inibidores da Angiogênese/uso terapêutico , Neovascularização de Coroide/diagnóstico , Neovascularização de Coroide/tratamento farmacológico , Angiofluoresceinografia , Humanos , Degeneração Macular/tratamento farmacológico , Estudos Prospectivos , Descolamento Retiniano/diagnóstico , Descolamento Retiniano/tratamento farmacológico , Descolamento Retiniano/etiologia , Epitélio Pigmentado da Retina/irrigação sanguínea , Estudos Retrospectivos , Tomografia de Coerência Óptica , Fator A de Crescimento do Endotélio VascularRESUMO
PURPOSE: To investigate the incidence rate, risk factors, and final outcomes of patients with age-related macular degeneration (AMD) who have experienced vision loss despite periodic aflibercept treatment. METHODS: Subjects with treatment-naive AMD were prospectively recruited and treated with three monthly injections followed by two monthly injections of aflibercept. The incidence rate and risk factors of more than two lines of vision loss at any visit were investigated. RESULTS: We included 196 eyes of 196 patients. Vision loss was observed in 16 patients (8.2%). Eleven of 16 patients developed vision loss during the initial 3 months (68.8%). Vision loss remained in 11 eyes (68.8%) at the final visit. The maximum pigment epithelium detachment (PED) height (odds ratio = 1.46 for a 100-µm increase in the PED height) and disruption of the external limiting membrane (odds ratio = 4.45) were identified as risk factors for developing vision loss on logistic regression analysis. CONCLUSION: The incidence rate of vision loss during aflibercept treatment was relatively low. Identifying high-risk patients, those with a high PED height and disruption of the external limiting membrane, would be helpful in ensuring appropriate informed consent before treatment. Further studies are needed to establish optimal treatment for these patients.
Assuntos
Cegueira/induzido quimicamente , Cegueira/epidemiologia , Proteínas Recombinantes de Fusão/efeitos adversos , Degeneração Macular Exsudativa/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Relação Dose-Resposta a Droga , Esquema de Medicação , Feminino , Seguimentos , Humanos , Incidência , Injeções Intravítreas , Japão/epidemiologia , Masculino , Estudos Prospectivos , Receptores de Fatores de Crescimento do Endotélio Vascular/administração & dosagem , Receptores de Fatores de Crescimento do Endotélio Vascular/antagonistas & inibidores , Proteínas Recombinantes de Fusão/administração & dosagem , Epitélio Pigmentado da Retina/efeitos dos fármacos , Epitélio Pigmentado da Retina/patologia , Fatores de Risco , Fatores de Tempo , Tomografia de Coerência Óptica , Acuidade Visual , Degeneração Macular Exsudativa/diagnósticoRESUMO
PURPOSE: To investigate the incidence rate and risk factors for development of retinal pigment epithelial (RPE) atrophy during anti-vascular endothelial growth factor (anti-VEGF) treatment for retinal angiomatous proliferation. METHODS: This study included 46 eyes with treatment-naive retinal angiomatous proliferation. All patients were treated with ranibizumab or aflibercept injections. Color fundus photography, spectral-domain optical coherence tomography, and fundus autofluorescence were evaluated for RPE atrophy diagnosis. Baseline characteristics and gene polymorphisms of ARMS2 A69S, and CFH I62V were analyzed for association with development and progression of RPE atrophy. RESULTS: Among 21 eyes treated with ranibizumab without preexisting RPE atrophy at baseline, 5 eyes (23.8%) developed RPE atrophy at 12 months. Among 20 eyes treated with aflibercept without preexisting RPE atrophy at baseline, 10 eyes (50.0%) developed RPE atrophy at 12 months. Refractile drusen at baseline was associated with RPE atrophy development at 12 months (P = 0.014), and the progression rate of RPE atrophy area was negatively correlated with subfoveal choroidal thickness at baseline (R = -0.595, P = 0.019). Gene polymorphisms were not associated with RPE atrophy. CONCLUSION: Retinal pigment epithelial atrophy developed in 36.6% during 12 months after anti-VEGF treatment for retinal angiomatous proliferation. The presence of refractile drusen at baseline was identified as a novel significant risk factor for RPE atrophy development.
Assuntos
Ranibizumab/efeitos adversos , Proteínas Recombinantes de Fusão/efeitos adversos , Degeneração Retiniana/tratamento farmacológico , Epitélio Pigmentado da Retina/patologia , Acuidade Visual , Idoso de 80 Anos ou mais , Inibidores da Angiogênese/administração & dosagem , Inibidores da Angiogênese/efeitos adversos , Atrofia/induzido quimicamente , Atrofia/patologia , Relação Dose-Resposta a Droga , Feminino , Angiofluoresceinografia , Seguimentos , Fundo de Olho , Humanos , Injeções Intravítreas , Masculino , Ranibizumab/administração & dosagem , Receptores de Fatores de Crescimento do Endotélio Vascular/administração & dosagem , Receptores de Fatores de Crescimento do Endotélio Vascular/antagonistas & inibidores , Proteínas Recombinantes de Fusão/administração & dosagem , Degeneração Retiniana/diagnóstico , Epitélio Pigmentado da Retina/efeitos dos fármacos , Estudos Retrospectivos , Fatores de Tempo , Tomografia de Coerência Óptica , Resultado do TratamentoRESUMO
PURPOSE: To investigate differences in clinical characteristics and genotype distribution in Japanese patients with age-related macular degeneration (AMD) and pseudodrusen using multimodal imaging. DESIGN: Retrospective, observational case series. PARTICIPANTS: A total of 101 patients (101 eyes) with AMD and pseudodrusen. METHODS: Patients underwent complete ophthalmologic examination, including color fundus photography, infrared reflectance (IR) imaging, fundus autofluorescence, confocal blue reflectance, fluorescein and indocyanine green (ICG) angiography, and spectral-domain optical coherence tomography (SD OCT). Pseudodrusen subtype was identified with multiple imaging techniques. Patients were genotyped to identify major single nucleotide polymorphisms associated with AMD (CFH Y402, CFH I62V, and ARMS2 A69S). MAIN OUTCOME MEASURES: Clinical characteristics and genetic distributions of patients with pseudodrusen. RESULTS: At least 1 imaging technique identified dot pseudodrusen in all 101 eyes and ribbon pseudodrusen in 53 eyes (52.5%). Forty-eight eyes (47.5%) had only dot pseudodrusen, but no eyes had only ribbon pseudodrusen or midperipheral drusen. Forty-five of 49 bilateral cases (91.8%) had the same pseudodrusen subtype in both eyes. Pseudodrusen subtype did not change during the observation period in 100 eyes (99.0%), but dot-dominant type changed to dot-ribbon type in 1 eye (1.0%). The dot and ribbon subtypes were detected in 84 (83.1%) and 51 (96.2%) eyes, respectively, using color fundus photographs. Detection sensitivity of dot pseudodrusen was high for IR (97.0%), confocal blue reflectance (95.1%), fundus autofluorescence (93.1%), and ICG (100%) imaging. Detection sensitivity for ribbon pseudodrusen was high for color fundus photography (96.2%), confocal blue reflectance (94.3%), and fundus autofluorescence (90.6%), but not for IR imaging and ICG angiography. Risk allele frequency of the CFH I62V polymorphism was 79.8% and 67.0% in patients with dot-dominant and dot-ribbon pseudodrusen, respectively (P = 0.053). The genotype frequency of CFH Y402H and ARMS2 A69S polymorphisms was not significantly different between the patients with dot-dominant type and dot-ribbon type (P = 0.647 and P = 0.354, respectively). CONCLUSIONS: Patients with pseudodrusen can be classified with dot-dominant or dot-ribbon type, and these subtypes usually are the same in both eyes. The distribution of CFH I62V polymorphisms may have an association with pseudodrusen subtypes.
Assuntos
Proteínas do Olho/genética , Angiofluoresceinografia/métodos , Testes Genéticos/métodos , Macula Lutea/patologia , Degeneração Macular/diagnóstico , Drusas Retinianas/diagnóstico , Tomografia de Coerência Óptica/métodos , Idoso , Idoso de 80 Anos ou mais , DNA/análise , Proteínas do Olho/metabolismo , Feminino , Seguimentos , Fundo de Olho , Genótipo , Humanos , Incidência , Japão/epidemiologia , Degeneração Macular/epidemiologia , Degeneração Macular/genética , Masculino , Oftalmoscopia , Drusas Retinianas/epidemiologia , Drusas Retinianas/genética , Estudos RetrospectivosRESUMO
PURPOSE: To evaluate visual and anatomic outcomes in response to the conversion of treatment in patients with neovascular age-related macular degeneration (AMD) and polypoidal choroidal vasculopathy (PCV) refractory to previous treatment. We also investigated the effect of genetic factors. METHODS: We recruited patients with AMD or PCV refractory to ranibizumab and initiated aflibercept treatment. Changes in the logarithm of minimum angle of resolution (logMAR) and central retinal thickness (CRT) measured using optical coherence tomography (OCT) 6 months after the conversion were compared between the AMD and PCV groups. We also genotyped each patient for the ARMS2 A69S, CFH Y402H, and I62V alleles, and investigated the association between genotype and treatment response. RESULTS: Mean age of the participants was 75.6 ± 8.0 years. There were 15 patients with AMD and 26 patients with PCV. While PCV patients gained about 1 line of vision (0.40 ± 0.37 to 0.31 ± 0.40, P = 0.003), AMD patients did not show significant improvement (0.41 ± 0.37 to 0.42 ± 0.39, P = 0.699) despite the decrease in CRT (202.1 ± 113.7 to 131.2 ± 55.7 µm, P = 0.003). The prevalence of dry retina after treatment was higher among PCV patients (80.8 vs 46.7 %, P = 0.024). There was no significant difference between patients with risk and non-risk alleles for ARMS2 A69S, CFH Y402H, and I62V. CONCLUSION: In AMD or PCV patients refractory to ranibizumab, switching to aflibercept is generally effective regardless of patient genotype. PCV patients may benefit more significantly than AMD patients.
Assuntos
Inibidores da Angiogênese/uso terapêutico , Neovascularização de Coroide/tratamento farmacológico , Pólipos/tratamento farmacológico , Ranibizumab/uso terapêutico , Receptores de Fatores de Crescimento do Endotélio Vascular/uso terapêutico , Proteínas Recombinantes de Fusão/uso terapêutico , Degeneração Macular Exsudativa/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Neovascularização de Coroide/genética , Neovascularização de Coroide/fisiopatologia , Fator H do Complemento/genética , Resistência a Medicamentos , Substituição de Medicamentos , Feminino , Angiofluoresceinografia , Técnicas de Genotipagem , Humanos , Masculino , Polimorfismo de Nucleotídeo Único , Pólipos/genética , Estudos Prospectivos , Proteínas/genética , Tomografia de Coerência Óptica , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Acuidade Visual/fisiologia , Degeneração Macular Exsudativa/genética , Degeneração Macular Exsudativa/fisiopatologiaRESUMO
PURPOSE: To determine the association between reflectivity levels in foveal cystoid spaces on optical coherence tomography images and the course of the logarithm of the minimum angle of resolution (logMAR) after triamcinolone acetonide treatment for diabetic macular edema. METHODS: We retrospectively reviewed 58 consecutive eyes treated with an intravitreal or sub-Tenon's injection of triamcinolone acetonide for diabetic macular edema. The foveal cystoid spaces within central 1 mm were circumscribed, followed by measurement of optical coherence tomography reflectivity. The correlation between the reflectivity and visual outcome was investigated. RESULTS: The optical coherence tomography reflectivity levels in foveal cystoid spaces increased at 1 month after treatment, but not at 3 months or 6 months. The preoperative reflectivity levels were correlated negatively with logMAR changes from 1 month to 6 months and from 3 months to 6 months but not with logMAR at individual time points compared with the preoperative logMAR. The changes in foveal thickness from 1 month to 6 months were correlated negatively with the baseline reflectivity and positively with logMAR changes from 1 month to 6 months and from 3 months to 6 months. CONCLUSION: Lower optical coherence tomography reflectivity in foveal cystoid spaces was associated with the rebound in macular thickening and visual deterioration after triamcinolone acetonide treatment for diabetic macular edema.
Assuntos
Retinopatia Diabética/diagnóstico , Glucocorticoides/uso terapêutico , Macula Lutea/patologia , Edema Macular/diagnóstico , Tomografia de Coerência Óptica , Triancinolona Acetonida/uso terapêutico , Idoso , Barreira Hematorretiniana , Permeabilidade Capilar , Retinopatia Diabética/tratamento farmacológico , Retinopatia Diabética/fisiopatologia , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Injeções Intraoculares , Injeções Intravítreas , Edema Macular/tratamento farmacológico , Edema Macular/fisiopatologia , Masculino , Recidiva , Estudos Retrospectivos , Acuidade Visual/fisiologiaRESUMO
Lead-acid batteries were electrically charged and discharged more quickly under high pressures than under atmospheric pressure due to high-pressure crystallization induced by the former condition. High-pressure crystallization can generate extremely small crystals with large supersaturation and small mass transfer rates. Crystals of PbSO4 on the electrodes were observed by scanning electron microscopy, and the crystals became smaller when the operative pressure increased, even when faster charging was carried out. Additionally, the amount of electrical current transferred to the electrodes was larger for electrodes charged and discharged at high pressure. This high-pressure charge-discharge process is expected to improve the quality of lead-acid batteries.
RESUMO
PURPOSE: To study the relationship between retinal vessel diameter and qualitative and quantitative evaluations on spectral-domain optical coherence tomography in patients with diabetic macular edema. METHODS: One hundred and eight consecutive eyes of 80 patients, with clinically significant macular edema underwent optical coherence tomography and color fundus photography. The authors evaluated the retinal thickness of the Early Treatment Diabetic Retinopathy Study grid and foveal pathomorphologies including cystoid macular edema and serous retinal detachment on the optical coherence tomography images. The diameters of the superotemporal or inferotemporal retinal vessels originating from the optic disk were measured using a computer-assisted technique. RESULTS: The mean diameters of the superotemporal and inferotemporal venules were larger in eyes with diabetic macular edema than in healthy eyes. The mean diameter of the temporal venules but not the arterioles was associated with perifoveal thickening in the inferior subfield in eyes with diabetic macular edema (P = 0.014). Although the retinal thickening in the central subfield was not correlated with the diameters of the retinal vessels, eyes with foveal serous retinal detachment had larger mean diameters of superotemporal and inferotemporal venules than those without serous retinal detachment (P < 0.001). CONCLUSION: The mean diameters of the superotemporal and inferotemporal venules were significantly associated with foveal serous retinal detachment in diabetic macular edema.
Assuntos
Retinopatia Diabética/complicações , Edema Macular/complicações , Descolamento Retiniano/diagnóstico , Veia Retiniana/patologia , Adulto , Idoso , Dilatação Patológica , Feminino , Angiofluoresceinografia , Humanos , Masculino , Pessoa de Meia-Idade , Descolamento Retiniano/etiologia , Descolamento Retiniano/cirurgia , Estudos Retrospectivos , Tomografia de Coerência Óptica , Vênulas/patologiaRESUMO
PURPOSE: To investigate the correlation between visual outcomes and preoperative hyperreflective foci in the outer retinal layers seen on spectral domain optical coherence tomography images in eyes that underwent vitrectomy for diabetic macular edema. METHODS: We retrospectively reviewed 32 consecutive eyes that underwent vitrectomy for diabetic macular edema. Ten eyes had accumulated or many hyperreflective foci in the outer retinal layers preoperatively; 22 eyes did not have the pathology. The logarithm of the minimum angle of resolution and the junction between inner and outer segments were studied in the groups. RESULTS: Logarithm of the minimum angle of resolution was significantly better in eyes without hyperreflective foci than in those with hyperreflective foci at 3 months and 6 months, and the last visit (P = 0.029, 0.010, and <0.001, respectively) compared with no differences at the baseline. Visual improvement was greater in eyes with no hyperreflective foci at the same time points. Seven eyes with hyperreflective foci had no junction between inner and outer segments at the final visit, whereas only 4 eyes with no foci had no junction between inner and outer segments (P = 0.004). However, the foveal thickness did not differ between the groups at any time. CONCLUSION: Preoperative hyperreflective foci in the outer retinal layers detected by spectral domain optical coherence tomography might predict the photoreceptor damage and a poorer prognosis after vitrectomy for diabetic macular edema.
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Retinopatia Diabética/cirurgia , Edema Macular/cirurgia , Complicações Pós-Operatórias , Doenças Retinianas/diagnóstico , Segmento Externo das Células Fotorreceptoras da Retina/patologia , Transtornos da Visão/diagnóstico , Vitrectomia , Seguimentos , Humanos , Prognóstico , Doenças Retinianas/etiologia , Doenças Retinianas/fisiopatologia , Estudos Retrospectivos , Tomografia de Coerência Óptica , Transtornos da Visão/etiologia , Transtornos da Visão/fisiopatologia , Acuidade Visual/fisiologiaRESUMO
The presence of human pharmaceuticals in the aquatic environment is recognised internationally as an important public health and environmental issue. In Scotland, healthcare sustainability targets call for improvements to medicine prescribing and use to reduce healthcare's impact on the environment. This proof-of-concept study aimed to develop a framework on the environmental impact of pharmaceuticals to use as a knowledge support tool for healthcare professionals, focussing on pharmaceutical pollution. Nominal Group Technique was applied to achieve consensus on pharmaceuticals and modelling factors for the framework, working with a panel of cross-sector stakeholders. Bayesian Belief Network modelling was applied to predict the environmental impact (calculated from hazard and exposure factors) of selected pharmaceuticals, with Scotland-wide mapping for visualisation in freshwater catchments. The model calculated the pollution risk score of the individual pharmaceuticals, using the ratio of prescribed mass vs. mass that would not exceed the predicted no-effect concentration in the freshwater environment. The pharmaceuticals exhibited different risk patterns, and spatial variation of risk was evident (generally related to population density), with the most catchments predicted to exceed the pollution risk score for clarithromycin (probability >80 % in 35 of 40 modelled catchments). Simulated risk scores were compared against observed risk calculated as the ratio of measured environmental concentrations from national regulatory and research monitoring and predicted no-effect concentrations. The model generally overpredicted risk, likely due to missing factors (e.g. solid-phase sorption, temporal variation), low spatial resolution, and low temporal resolution of the monitoring data. This work demonstrates a novel, trans-disciplinary approach to develop tools aiding collation and integration of environmental information into healthcare decision-making, through application of public health, environmental science, and health services research methods. Future work will refine the framework with additional clinical and environmental factors to improve model performance, and develop electronic interfaces to communicate environmental information to healthcare professionals.
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A 46-year-old male was treated with corticosteroids for nonspecific interstitial pneumonia (NSIP). He was referred to our hospital and admitted for worsening dyspnea and diffuse ground-glass opacity on chest computed tomography (CT) during corticosteroid treatment. Gottron's sign was observed, and the patient was diagnosed with clinically amyopathic dermatomyositis on skin biopsy. We increased the corticosteroid dose and added immunosuppressive agents; however, the opacity on the chest CT worsened. Based on periodic-acid-Schiff-positive granular material in the bronchoalveolar lavage fluid and the presence of anti-GM-CSF antibodies, the patient was diagnosed with autoimmune pulmonary alveolar proteinosis (APAP). The concentration of anti-GM-CSF antibodies in preserved serum was also elevated when the patient was diagnosed with NSIP. Thus, we assumed that NSIP and APAP coexisted, and that APAP manifested during immunosuppressive therapy. When exacerbation is observed during the treatment of interstitial pneumonia with immunosuppressive agents, it is necessary to consider APAP.
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PURPOSE: To examine the associations between the vortex vein characteristics and locations of the pigment epithelial detachment (PED) and leak point in patients with central serous chorioretinopathy (CSC). DESIGN: Observational case series. METHODS: We evaluated 116 eyes of 104 patients with CSC. The PED and leak point locations were superimposed over the choroidal en face images using widefield swept-source optical coherence tomography and fluorescein angiography. We defined the draining areas of the superior and inferior vortex veins and analyzed their associations with the PED and leak point locations. RESULTS: One of the 116 eyes with a unique irrigation pattern dominated by the nasal vortex vein was excluded from the analysis. Sixty-nine (60%) of the remaining 115 eyes exhibited asymmetry between the superior and inferior vortex veins. PEDs and leak points were in the vortex vein draining area with greater dilation in 66 (96%) of 69 eyes with asymmetry, and none (0%) were in the opposite areas. Both the PEDs and leak points showed significant differences in their distributions (P < .001, respectively). Additionally, 74% of PEDs and 84% of leak points were located upstream of the vortex vein draining areas, whose frequency was significantly higher compared to other areas (P < .001, respectively). CONCLUSION: PED and leak point spatial distributions corresponded with the most terminal part of the dilated vortex veins, suggesting that blood flow disturbances, such as stasis within the affected vortex veins, may be essential in the pathogenesis of CSC.
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Coriorretinopatia Serosa Central , Descolamento Retiniano , Humanos , Coriorretinopatia Serosa Central/diagnóstico , Estudos Retrospectivos , Descolamento Retiniano/diagnóstico , Angiofluoresceinografia/métodos , Corioide/irrigação sanguínea , Tomografia de Coerência Óptica/métodosRESUMO
Purpose: To evaluate the efficacy and safety of faricimab injections for treatment-naïve neovascular age-related macular degeneration (nvAMD) patients, including subtypes and pachychoroid phenotypes, and identify predictive factors for visual outcomes. Methods: nvAMD patients were prospectively recruited, receiving three monthly faricimab (6 mg) injections. Best-corrected visual acuity (BCVA) two months after the last injection (month 4) was compared between subtypes, and between pachychoroid neovasculopathy (PNV) and non-PNV eyes. Regression analysis determined factors influencing month 4 BCVA. Results: The study involved 23 patients (12 typical AMD [tAMD], 10 polypoidal choroidal vasculopathy [PCV], 1 retinal angiomatous proliferation [RAP]). Eleven exhibited PNV phenotype. Significant BCVA (P = 4.9 × 10-4) and central retinal thickness (CRT) (P = 1.3 × 10-5) improvements were observed post-faricimab treatment. The therapy demonstrated favourable results for both tAMD and PCV eyes, and non-PNV and PNV eyes. Faricimab achieved dry macula in 77.3% of eyes, with subretinal fluid resolution in most cases, although intraretinal fluid (IRF) often persisted. Multivariable analysis identified external limiting membrane (ELM) presence and IRF as BCVA contributors at month 4. Conclusion: Faricimab demonstrated significant effectiveness and safety in treatment-naïve nvAMD patients, particularly for PCV and PNV eyes. ELM presence and IRF is predictive of visual outcomes.
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Purpose: To elucidate the clinical characteristics and progression rates of pachychoroid and conventional geographic atrophy (GA). Design: Retrospective, multicenter, observational study. Participants: A total of 173 eyes from 173 patients (38 eyes with pachychoroid GA and 135 with conventional GA) from 6 university hospitals in Japan were included. All patients were Japanese, aged ≥50 years and with fundus autofluorescence images having analyzable image quality. A total of 101 eyes (22 with pachychoroid GA and 79 with conventional GA) were included in the follow-up group. Methods: The studied eyes were classified as having pachychoroid or conventional GA; the former was diagnosed if the eye had features of pachychoroid and no drusen. The GA area was semiautomatically measured on fundus autofluorescence images, and the GA progression rate was calculated for the follow-up group. Multivariable linear regression analysis was used to determine whether the rate of GA progression was associated with GA subtype. Main Outcome Measures: Clinical characteristics and progression rates of pachychoroid and conventional GA. Results: The pachychoroid GA group was significantly younger (70.3 vs. 78.7 years; P < 0.001), more male-dominant (89.5 vs. 55.6%; P < 0.001), and had better best-corrected visual acuity (0.15 vs. 0.40 in logarithm of the minimum angle of resolution; P = 0.002), thicker choroid (312.4 vs. 161.6 µm; P < 0.001), higher rate of unifocal GA type (94.7 vs. 49.6%; P < 0.001), and smaller GA area (0.59 vs. 3.76 mm2;P < 0.001) than the conventional GA group. In the follow-up group, the mean GA progression rate (square-root transformation) was significantly lower in the pachychoroid GA group than in the conventional GA group (0.11 vs. 0.27 mm/year; P < 0.001). Conclusions: Demographic and ocular characteristics differed between GA subtypes. The progression rate of pachychoroid GA, adjusted for age and baseline GA area, was significantly lower than that of conventional GA. Japanese patients with conventional GA showed characteristics and progression rates similar to those in White populations. Some characteristics of GA in Japanese population differ from those in Waucasian populations, which may be due to the inclusion of pachychoroid GA. Financial Disclosures: Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.