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1.
Arq Bras Oftalmol ; 87(3): e20220357, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38537041

RESUMO

We present a rare case of primary caruncle basal cell carcinoma (BCC), a condition with limited occurrences. Our patient, an 80-year-old woman without prior ocular pathological history, presented a 2x2mm pedunculated blackish nodular lesion on the caruncle of her left eye, without local conjunctival or cutaneous involvement. Histological analysis following complete excision confirmed the presence of basal cell carcinoma within the caruncle. Over a span of 30 months, no recurrence has been observed. While scant cases are documented in the literature, we conducted a review of these instances. Despite its infrequent manifestation, this condition should be taken into account when evaluating caruncular tumors, given its tendency to invade the orbit. Complete excision with free surgical margins is the treatment of choice, and adjuvant radiotherapy or chemotherapy might be considered.


Assuntos
Carcinoma Basocelular , Neoplasias Oculares , Neoplasias Cutâneas , Humanos , Feminino , Idoso de 80 Anos ou mais , Carcinoma Basocelular/cirurgia , Carcinoma Basocelular/patologia , Túnica Conjuntiva/patologia , Neoplasias Cutâneas/cirurgia
2.
Exp Eye Res ; 241: 109854, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38453037

RESUMO

Mucosal chemokines have antimicrobial properties and play an important role in mucosal immunity. However, little is known about their expression on the ocular surface. This study aimed to analyze the expression of the mucosal chemokines CCL28, CXCL14 and CXCL17 in corneal and conjunctival epithelial cells under in vitro dry eye (DE) conditions, and in conjunctival samples from healthy subjects and DE patients. Human corneal epithelial cells (HCE) and immortalized human conjunctival epithelial cells (IM-HConEpiC) were incubated under hyperosmolar (400-500 mOsM) or inflammatory (TNF-α 25 ng/mL) conditions for 6 h and 24 h to measure CCL28, CXCL14, and CXCL17 gene expression by RT-PCR and their secretion by immunobead-based analysis (CCL28, CXCL14) and ELISA (CXCL17). Additionally, twenty-seven DE patients and 13 healthy subjects were included in this study. DE-related questionnaires (OSDI, mSIDEQ and NRS) evaluated symptomatology. Ocular surface integrity was assessed using vital staining. Tactile sensitivity was measured with Cochet-Bonnet esthesiometer, and mechanic and thermal (heat and cold) sensitivity using Belmonte's non-contact esthesiometer. Subbasal nerve plexus and dendritic cell density were analyzed by in vivo confocal microscopy. Conjunctival cells from participants were collected by impression cytology to measure mucosal chemokines gene expression by RT-PCR. Our results showed that HCE and IM-HConEpiC cells increased CCL28, CXCL14, and CXCL17 secretion under hyperosmolar conditions. The gene expression of CCL28 was significantly upregulated in conjunctival samples from DE patients. CCL28 expression correlated positively with symptomatology, corneal staining, heat sensitivity threshold, and dendritic cell density. CXCL14 expression correlated positively with age, ocular pain, conjunctival staining, tactile sensitivity, and image reflectivity. CXCL17 expression correlated positively with corneal staining. These results suggest that corneal and conjunctival epithelial cells could be a source of CCL28, CXCL14, and CXCL17 on the ocular surface and that CCL28 might be involved in DE pathogenesis.


Assuntos
Dieldrin/análogos & derivados , Síndromes do Olho Seco , Humanos , Síndromes do Olho Seco/patologia , Quimiocinas/genética , Córnea/patologia , Túnica Conjuntiva/patologia , Quimiocinas CC , Quimiocinas CXC
3.
Medicine (Baltimore) ; 103(10): e37342, 2024 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-38457580

RESUMO

RATIONALE: Conjunctival myxoma is a rare benign tumor, which can mimic more common conjunctival lesions such as a cyst, lymphangioma, amelanotic nevus, neurofibroma, amelanotic melanoma, or lipoma. We describe a patient with the conjunctival myxoma, who was initially misdiagnosed as a conjunctival cyst. This case report includes intraoperative photographs and various immunohistochemical staining images. PATIENTS CONCERNS: A 55-year-old woman presented with a painless mass in the superotemporal conjunctiva of the left eye, which she had noticed 1 month ago. The patient had no previous history of trauma or eye surgery. Slit-lamp examination revealed a well-circumscribed, freely movable, pinkish, semi-translucent mass on the temporal bulbar conjunctiva, suggestive of a conjunctival cyst. DIAGNOSES: Histopathological analysis showed stellate- and spindle-shaped cells within the loose myxoid stroma, confirming a diagnosis of conjunctival myxoma. INTERVENTIONS: The conjunctival lesion was completely excised under local anesthesia. OUTCOMES: After 4 months of follow-up, the patient remained in good health without recurrence of the conjunctival lesion and no evidence of any systemic abnormality. LESSONS: Myxoma is an extremely uncommon benign tumor derived from primitive mesenchyme. Considering the rarity of the tumor and its similarity to other conjunctival tumors, diagnosis can be challenging. Ophthalmologists should consider myxoma as a possible differential diagnosis when encountering conjunctival lesions. Surgical excision is essential to confirm the diagnosis and careful systemic evaluation is required to prevent potentially life-threatening underlying systemic conditions.


Assuntos
Neoplasias da Túnica Conjuntiva , Cistos , Mixoma , Neoplasias Cutâneas , Feminino , Humanos , Pessoa de Meia-Idade , Neoplasias da Túnica Conjuntiva/diagnóstico , Neoplasias da Túnica Conjuntiva/cirurgia , Neoplasias da Túnica Conjuntiva/patologia , Mixoma/diagnóstico , Mixoma/cirurgia , Mixoma/patologia , Túnica Conjuntiva/patologia
4.
Zhonghua Yan Ke Za Zhi ; 60(3): 278-280, 2024 Mar 11.
Artigo em Chinês | MEDLINE | ID: mdl-38462378

RESUMO

An 81-year-old female patient experienced a rapid increase in the volume of a rice-sized black mass on the left eye over a period of six months. The mass extended out of the eye and exhibited surface erosion with accompanying hemorrhage. Following a live tissue examination and histopathology after orbital exenteration under general anesthesia, the diagnosis of a giant malignant palpebral conjunctival melanoma of the spindle cell subtype was confirmed. The patient refused to undergo local radiation therapy or systemic chemotherapy and died from the disease six months later.


Assuntos
Neoplasias da Túnica Conjuntiva , Melanoma , Feminino , Humanos , Idoso de 80 Anos ou mais , Túnica Conjuntiva/patologia , Neoplasias da Túnica Conjuntiva/diagnóstico
5.
JAMA Ophthalmol ; 142(4): 382-383, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38421663

RESUMO

A 74-year-old woman with a history of breast cancer, now in remission, presented for evaluation of a conjunctival lesion of the right eye. What would you do next?


Assuntos
Túnica Conjuntiva , Neoplasias da Túnica Conjuntiva , Humanos , Túnica Conjuntiva/patologia , Neoplasias da Túnica Conjuntiva/patologia
6.
Mucosal Immunol ; 17(2): 211-225, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38331094

RESUMO

Allergic conjunctivitis (AC), an allergen-induced ocular inflammatory disease, primarily involves mast cells (MCs) and eosinophils. The role of neuroimmune mechanisms in AC, however, remains to be elucidated. We investigated the effects of transient receptor potential vanilloid 1 (TRPV1)-positive sensory nerve ablation (using resiniferatoxin) and TRPV1 blockade (using Acetamide, N-[4-[[6-[4-(trifluoromethyl)phenyl]-4-pyrimidinyl]oxy]-2-benzothiazolyl] (AMG-517)) on ovalbumin-induced conjunctival allergic inflammation in mice. The results showed an exacerbation of allergic inflammation as evidenced by increased inflammatory gene expression, MC degranulation, tumor necrosis factor-α production by MCs, eosinophil infiltration and activation, and C-C motif chemokine 11 (CCL11) (eotaxin-1) expression in fibroblasts. Subsequent findings demonstrated that TRPV1+ sensory nerves secrete somatostatin (SST), which binds to SST receptor 5 (SSTR5) on MCs and conjunctival fibroblasts. SST effectively inhibited tumor necrosis factor-α production in MCs and CCL11 expression in fibroblasts, thereby reducing eosinophil infiltration and alleviating AC symptoms, including eyelid swelling, lacrimation, conjunctival chemosis, and redness. These findings suggest that targeting TRPV1+ sensory nerve-mediated SST-SSTR5 signaling could be a promising therapeutic strategy for AC, offering insights into neuroimmune mechanisms and potential targeted treatments.


Assuntos
Antineoplásicos , Conjuntivite Alérgica , Camundongos , Animais , Fator de Necrose Tumoral alfa/metabolismo , Túnica Conjuntiva/metabolismo , Túnica Conjuntiva/patologia , Eosinófilos , Antineoplásicos/efeitos adversos , Inflamação/metabolismo , Canais de Cátion TRPV/genética , Canais de Cátion TRPV/metabolismo
7.
Int Ophthalmol ; 44(1): 59, 2024 Feb 12.
Artigo em Inglês | MEDLINE | ID: mdl-38345673

RESUMO

PURPOSE: To investigate the relationship between prolonged face mask use and ocular surface health utilizing conjunctival impression cytology, the Schirmer test, the tear break-up time (TBUT) test, and the ocular surface disease index (OSDI) questionnaire. METHODS: In this cross-sectional prospective study, individuals who used face masks for at least eight hours per day for at least six months were compared to healthy volunteers who used face masks for no more than one hour per day. Each participant completed an OSDI questionnaire. The Schirmer test (under anesthesia), the TBUT test, and conjunctiva impression cytology analysis according to the Nelson classification method were performed on each participant. RESULTS: This study included 102 (49 male, 53 female) face mask users with an average age of 33.29 ± 7.71 years and 110 (60 male, 50 female) healthy controls with an average age of 32.96 ± 7.10 years (p = 0.746). The total OSDI score was significantly higher in face mask users than the control group (25.18 ± 3.54 vs 9.46 ± 2.13, p < 0.001). The mean Schirmer test value and TBUT were significantly lower in the study group than the control group (p < 0.001, p < 0.001). There was a statistically significant difference between the two groups in total score and stage of the Nelson classification system (p < 0.001, and p = 0.024, respectively). All conjunctiva impression cytology assessments, including cellularity, cell-cell contact, nucleus/cytoplasma ratio, goblet cell amount, and metaplasia, revealed statistically significant deterioration in the study group compared to the control group (p < 0.001, p = 0.025, p < 0.001, p < 0.001, and p < 0.001, respectively). CONCLUSION: The prolonged use of face masks leads to dry eyes. The findings of conjunctiva impression cytology indicate the role of inflammation in the pathogenesis of mask associated dry eye.


Assuntos
COVID-19 , Síndromes do Olho Seco , Humanos , Masculino , Feminino , Adulto , Estudos Prospectivos , Estudos Transversais , Citologia , Máscaras/efeitos adversos , Pandemias , COVID-19/epidemiologia , COVID-19/complicações , Túnica Conjuntiva/patologia , Síndromes do Olho Seco/diagnóstico , Síndromes do Olho Seco/epidemiologia , Síndromes do Olho Seco/etiologia , Lágrimas
9.
Eye (Lond) ; 38(3): 553-557, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37752343

RESUMO

BACKGROUND: Paediatric conjunctival lesions are rare and diverse. Though often indolent and asymptomatic, they can in some cases be sight or life-threatening. Awareness of concerning features of conjunctival lesions is key to optimal management. We aim to provide insight into management of paediatric conjunctival lesions though a review of cases in our service in last 12 years. METHODS: We present a retrospective analysis of our population-based cohort of children with conjunctival lesions presenting to our regional service in Belfast between 2011 and 2022 inclusive. We detail three rare cases of paediatric conjunctival lesions; a congenital intrascleral cyst leading to astigmatic amblyopia, a rapidly changing salmon-pink lesion confirmed as an embryonal rhabdomyosarcoma and an unusual presentation of a chronic granuloma arising from the caruncle. RESULTS: 85 conjunctival lesions were identified in <16 year olds giving a cumulative incidence of 27 cases per 100,000 population over 12 years. Mean age at presentation was 7 years old. Most common lesions were naevi (40%), limbal dermoids (21%), conjunctival melanosis (14%), conjunctival cysts (7%) and phlycten (6%). When seen at presentation 8% of cases were immediately listed for surgery, 28% were discharged and 64% entered a phase of observation. CONCLUSION: Paediatric conjunctival lesions have potential to cause visual manifestations, whilst some may undergo malignant transformation. Anterior segment photography is crucial in monitoring change and facilitating early discharge in the absence of sinister features. Malignant transformation must be considered in changing lesions which ought to have histological diagnosis obtained to prevent potentially sight and life-threatening conditions.


Assuntos
Neoplasias da Túnica Conjuntiva , Neoplasias Oculares , Humanos , Criança , Estudos Retrospectivos , Neoplasias da Túnica Conjuntiva/patologia , Túnica Conjuntiva/patologia , Neoplasias Oculares/patologia , Incidência
10.
Cornea ; 43(3): 378-386, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38015979

RESUMO

PURPOSE: The purpose of this study was to extensively evaluate the efficacy of integrin αvß3 antagonists for the treatment of experimental dry eye (EDE). METHODS: Vitronectin, an αvß3 ligand, was used to induce tumor necrosis factor-α gene expression in human THP-1 macrophages. To induce EDE, C57BL/6 mice were housed in a low-humidity controlled environment chamber and injected subcutaneously with scopolamine for 7 days. Subsequently, αvß3 antagonists, including RGDfD, c(RGDfD), c(RGDiD), c(RGDfK), ATN-161, SB273005, and cilengitide, were administered topically to EDE animals under controlled environment chamber conditions. Corneal epithelial damage in EDE was assessed by fluorescein staining. The density of conjunctival goblet cells and secretion of tears was measured by period acid-Schiff staining and phenol red-impregnated cotton threads, respectively. Inflammation markers, including tumor necrosis factor-α, interleukin (IL)-1ß, IL-6, IL-17A, and metalloproteinase (MMP)-9, in the pooled cornea and conjunctiva tissues were examined by real-time polymerase chain reaction. RESULTS: The inhibitory effects of αvß3 antagonists on the vitronectin-induced tumor necrosis factor-α gene expression and integrin-mediated inflammatory signaling were validated in THP-1 macrophages. αvß3 antagonists ameliorated the impairment of the corneal epithelial barrier with varying therapeutic efficacies, compared with vehicle-treated mice. c(RGDfD) and c(RGDiD) significantly protected against goblet cell loss, tear reduction, and proinflammatory gene expression in EDE. CONCLUSIONS: Topical applications of αvß3 antagonists yield therapeutic benefits in EDE by promoting corneal epithelial defect healing and reducing inflammation. Antagonistic targeting αvß3 may be a novel promising strategy to treat patients with dry eye disease.


Assuntos
Síndromes do Olho Seco , Integrina alfaVbeta3 , Humanos , Animais , Camundongos , Integrina alfaVbeta3/metabolismo , Integrina alfaVbeta3/uso terapêutico , Fator de Necrose Tumoral alfa/genética , Fator de Necrose Tumoral alfa/metabolismo , Vitronectina/metabolismo , Vitronectina/farmacologia , Vitronectina/uso terapêutico , Camundongos Endogâmicos C57BL , Síndromes do Olho Seco/metabolismo , Lágrimas/metabolismo , Túnica Conjuntiva/patologia , Córnea/patologia , Inflamação/metabolismo , Modelos Animais de Doenças
11.
Ocul Immunol Inflamm ; 32(1): 62-70, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36637982

RESUMO

PURPOSE: To evaluate ocular surface involvement, tear cytokine levels, and histopathological changes in pemphigus and pemphigoid patients. METHODS: A total of 22 patients (15 pemphigus and 7 pemphigoids) and 21 non-diseased controls were enrolled in our study. All participants underwent ocular surface evaluation, which included ocular surface disease index test, slit lamp observation, dry eye-related examination, tear multicytokine analysis, and conjunctival impression cytology. RESULTS: Pemphigus and pemphigoid patients presented much more severe conjunctivochalasis, corneal epithelial defects, corneal opacity, symblepharon   and dry eye. Severe ocular surface squamous metaplasia and a significant increase of tear macrophage inflammatory protein-1beta, tumor necrosis factor-alpha, interleukin (IL)-1ß, IL -6, and IL-8 occurred in pemphigus and pemphigoid patients. CONCLUSIONS: Our results revealed that ocular surface inflammation and dry eye persist in most pemphigus and pemphigoid patients, and do not occur in parallel with the systemic course. Regular ophthalmological examinations and local anti-inflammatory should be provided for pemphigus and pemphigoid patients.


Assuntos
Doenças da Túnica Conjuntiva , Síndromes do Olho Seco , Penfigoide Bolhoso , Pênfigo , Humanos , Penfigoide Bolhoso/complicações , Penfigoide Bolhoso/diagnóstico , Pênfigo/complicações , Pênfigo/diagnóstico , Síndromes do Olho Seco/diagnóstico , Síndromes do Olho Seco/etiologia , Síndromes do Olho Seco/patologia , Doenças da Túnica Conjuntiva/diagnóstico , Doenças da Túnica Conjuntiva/etiologia , Túnica Conjuntiva/patologia , Lágrimas , Interleucina-1beta , Inflamação/diagnóstico , Inflamação/patologia
12.
Eye Contact Lens ; 50(2): 73-78, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-37791838

RESUMO

OBJECTIVE: To investigate the effect of repeated povidone-iodine (PVI) application on the ocular surface parameters of patients who received intravitreal injections. MATERIALS AND METHODS: In this prospective study, 52 eyes of 52 patients with age-related macular degeneration who underwent unilateral intravitreal injection at least three times in the last 1 year (intravitreal injection [IVI] group), 52 fellow eyes with no previous intravitreal injection (NIVI group), and 51 eyes of 51 healthy subjects (control) were included. Tear break-up time (TBUT), the Schirmer test, the Oxford staining score, the Ocular Surface Disease Index questionnaire, conjunctival impression cytology, and tear inflammatory cytokine levels (interleukin [IL]-1ß and IL-6) were analyzed in all participants. RESULTS: The IVI group had lower TBUT and higher Oxford staining score than the NIVI and control groups ( P <0.05). No significant difference was found between the groups in the Schirmer test ( P =0.161). Conjunctival impression cytology analysis revealed that the IVI group had a significantly lower goblet cell count and significantly higher Nelson staging result than the NIVI and control groups ( P <0.05). As a result of tear cytokine analysis, although IVI and NIVI groups had higher IL-1ß and IL-6 levels than the control group ( P <0.05), there was no difference between NIVI and IVI groups ( P ≥0.05). CONCLUSIONS: Repeated PVI application caused cytotoxic injury to the ocular surface, resulting in goblet cell loss and squamous metaplasia of epithelial cells. As a result, the stability of the tear film layer was found to be impaired and ocular surface-related symptoms developed in patients.


Assuntos
Interleucina-6 , Povidona-Iodo , Humanos , Injeções Intravítreas , Estudos Prospectivos , Interleucina-6/metabolismo , Túnica Conjuntiva/patologia , Lágrimas/metabolismo
13.
Ophthalmic Plast Reconstr Surg ; 40(1): e4-e6, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-37552494

RESUMO

The role of neoadjuvant chemotherapy (NACT) in eyelid and orbital malignancies is not well defined. It has been tried with good success in cases of eyelid sebaceous gland carcinoma but there is very limited literature on its role in cases of ocular surface squamous neoplasia. A 54-year-old man presented with gradually increasing swelling of the right upper eyelid for the past 2 years. On examination, a large friable papillary mass was found covering the entire conjunctival surface (T3N0M0). Incisional biopsy from the mass was suggestive of papillary squamous cell carcinoma. There was no lymph node or distant metastasis as confirmed by whole-body positron emission tomography-CT scan. A trial of NACT (3 cycles of paclitaxel and cisplatin) was given and the mass shrunk in size considerably making it amenable to surgical resection. The conjunctival surface healed completely and there was no recurrence at 1 year of follow up. NACT can be tried in unresectable large ocular surface neoplasia to make the tumor more amenable to surgical resection.


Assuntos
Carcinoma de Células Escamosas , Neoplasias Oculares , Neoplasias Palpebrais , Neoplasias das Glândulas Sebáceas , Masculino , Humanos , Pessoa de Meia-Idade , Terapia Neoadjuvante , Túnica Conjuntiva/patologia , Neoplasias Palpebrais/patologia , Carcinoma de Células Escamosas/patologia , Neoplasias das Glândulas Sebáceas/patologia
14.
Turk J Ophthalmol ; 54(1): 1-4, 2024 02 22.
Artigo em Inglês | MEDLINE | ID: mdl-38008933

RESUMO

Objectives: The aim of the present study was to evaluate any conjunctival metaplastic changes by impression cytology in patients who underwent topical 1% voriconazole treatment for severe fungal keratitis. Materials and Methods: The study was conducted at Ege University Faculty of Medicine, Departments of Ophthalmology and Medical Pathology. Patients who were treated with 1% topical voriconazole for fungal keratitis for at least 3 months were included. The used topical voriconazole treatment was initiated as one drop every hour and was tapered according to clinical improvement in all patients. Treatment was continued 4 times a day for at least 3 months. Impression cytology samples were collected at least 3 months after cessation of topical voriconazole from the affected eyes and from the fellow eyes as a control group. Collected specimens were transferred to the pathology department for evaluation and grading (Nelson's grading system). Results: The mean age of the patients was 57.68±17.32 years (range, 22-87 years). The impression cytology grade of the inferior bulbar conjunctiva was 1.73±0.77 (range, 0-3) in the study group and 1.19±0.98 (range, 0-3) in the control group (p=0.03). The impression cytology grade of the temporal bulbar conjunctiva was 1.69±0.73 (range, 0-3) in the study group and 1.15±0.88 (range, 0-3) in the control group (p=0.02). The impression cytology grades of the nasal and superior bulbar conjunctiva did not differ statistically (p values 0.13 and 0.17, respectively). Conclusion: Topical voriconazole is an effective broad-spectrum antifungal drug, but it induces conjunctival squamous metaplasia. Clinicians should be aware of this possible side effect of topical voriconazole and should carefully evaluate the conjunctiva of treated patients at each visit to detect possible metaplastic changes.


Assuntos
Infecções Oculares Fúngicas , Ceratite , Humanos , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Voriconazol/farmacologia , Túnica Conjuntiva/patologia , Antifúngicos , Infecções Oculares Fúngicas/diagnóstico , Infecções Oculares Fúngicas/tratamento farmacológico
16.
Cornea ; 43(3): 391-393, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38147572

RESUMO

PURPOSE: The aim of this study was to describe a rare case of conjunctival black henna accumulation that was clinically misdiagnosed as melanoma. METHODS: This retrospective case report reviewed the clinical findings and histopathologic features of a pigmented plica semilunaris lesion excised from a 63-year-old woman. The patient had a history of regular use of black henna in her childhood. The conjunctival pigmentation was present since her early teenage years but started to grow only recently. RESULTS: There was a darkly pigmented mass mainly covering the plica semilunaris of the right eye with additional irregularly scattered pigmentation in the medial bulbar conjunctiva. Excisional biopsy of the plical tumor revealed nodular pigment deposits with lymphocytic infiltration. There were no neoplastic cells. The specimen stained negative for pan-keratin, CD68, and CD34. Melanin bleaching was also negative. CONCLUSIONS: Long-term exposure to black henna as a hair dye may lead to subconjunctival accumulation and mimic melanoma.


Assuntos
Doenças da Túnica Conjuntiva , Neoplasias da Túnica Conjuntiva , Melanoma , Fenilenodiaminas , Feminino , Humanos , Pessoa de Meia-Idade , Túnica Conjuntiva/patologia , Doenças da Túnica Conjuntiva/diagnóstico , Neoplasias da Túnica Conjuntiva/diagnóstico , Neoplasias da Túnica Conjuntiva/patologia , Melanoma/diagnóstico , Melanoma/patologia , Estudos Retrospectivos
17.
Acta Ophthalmol ; 101 Suppl 278: 3-21, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38037546

RESUMO

ENGLISH SUMMARY: Glaucoma is a leading cause of the global prevalence of irreversible blindness. The pathogenesis of glaucoma is not entirely known, but the major risk factors include advancing age, genetic predisposition, and increased intraocular pressure (IOP). The only evidence-based treatment is a lowering of IOP through the use of eye drops, laser procedures, or surgical interventions. Although laser treatment is gaining recognition as a first-choice treatment option, the most common approach for managing glaucoma is IOP-lowering eye drops. A major challenge in the treatment is the occurrence of adverse events and poor adherence. In this context, the ocular surface is an area of great concern, as most glaucoma patients have dry eye disease (DED), which is largely caused by eye drops. Preservation with benzalkonium chloride (BAK) is a controversial topic due to its potential role as a significant cause of DED. A systematic review and meta-analyses investigate potential differences in efficacy and safety between BAK-preserved and BAK-free anti-glaucomatous eye drops (I). Many of the included studies report on ocular surface damage caused by the application of BAK-preserved eye drops. However, the meta-analyses addressing hyperemia, number of ocular adverse events, and tear break-up time did not identify any significant differences. The latter is likely due to varying measurement methods, different endpoints, and study durations. It is, therefore, possible that the large variations between the studies conceal differences in the safety profiles. The efficacy meta-analysis finds that there are no differences in the IOP-lowering effect between BAK-preserved and BAK-free eye drops, indicating that BAK is not necessary for the effectiveness of eye drops. To promote more homogeneous choices of endpoints and methods when evaluating BAK-preserved and BAK-free glaucoma treatments, a Delphi consensus statement was performed. In this study, glaucoma experts and ocular surface disease experts reached consensus on the key factors to consider when designing such studies (II). The hope is to have more studies with comparable endpoints that can systematically show the potentially adverse effects of BAK. The preclinical studies in the current Ph.D. research focus on conjunctival goblet cells (GCs). GCs are important for the ocular surface because they release the mucin MUC5AC, which is an essential component of the inner layer of the tear film. BAK preservation may damage the GCs and result in a low GC density, leading to an unstable tear film and DED. The most commonly used IOP-lowering drugs are prostaglandin analogs (PGAs). Thus, the conducted studies investigate the effect of PGAs preserved in different ways on GCs. BAK-preserved latanoprost is cytotoxic to primary cultured human conjunctival GCs and results in a scattered expression of MUC5AC, in contrast to negative controls, where MUC5AC is localized around the cell nucleus (III). Preservative-free (PF) latanoprost is not cytotoxic and does not affect the MUC5AC expression pattern. Furthermore, BAK-preserved travoprost is found to be cytotoxic in a time-dependent manner, while Polyquad®-preserved travoprost does not affect GC survival at any measured time point (IV). Both Polyquad and BAK induce scattered expression of MUC5AC. The cytotoxicity of BAK-preserved PGA eye drops is higher compared to the safer profile of PF and Polyquad-preserved PGA eye drops (V). Additionally, PF latanoprost does not increase the release of the inflammatory markers interleukin (IL)-6 and IL-8, unlike BAK-preserved latanoprost. A review highlights the active and inactive components of IOP-lowering eye drops (VI). Several preclinical and clinical studies have identified adverse effects of BAK. Although other components, such as the active drug and phosphates, can also cause adverse events, the review clearly states that BAK alone is a major source of decreased tolerability. The conclusion of this thesis is that BAK preservation is unnecessary and harmful to the ocular surface. The preclinical studies demonstrate that GCs die when exposed to BAK. Furthermore, they find that BAK induces a pro-inflammatory response. The review included in the thesis concludes that BAK should be phased out of eye drops for chronic use. Overall, the inclusion of BAK poses a risk of developing DED and poor adherence, which can ultimately lead to disease progression and blindness.


Assuntos
Glaucoma , Prostaglandinas F Sintéticas , Humanos , Compostos de Benzalcônio/efeitos adversos , Pressão Intraocular , Travoprost/efeitos adversos , Latanoprosta/uso terapêutico , Soluções Oftálmicas/uso terapêutico , Células Caliciformes , Prostaglandinas F Sintéticas/efeitos adversos , Anti-Hipertensivos/uso terapêutico , Glaucoma/tratamento farmacológico , Glaucoma/metabolismo , Conservantes Farmacêuticos/efeitos adversos , Túnica Conjuntiva/patologia , Prostaglandinas Sintéticas , Cegueira/patologia
18.
Sci Rep ; 13(1): 22839, 2023 12 21.
Artigo em Inglês | MEDLINE | ID: mdl-38129447

RESUMO

Goblet cells (GCs) in the conjunctiva are specialized epithelial cells secreting mucins for the mucus layer of protective tear film and playing immune tolerance functions for ocular surface health. Because GC loss is observed in various ocular surface diseases, GC examination is important for precision diagnosis. Moxifloxacin-based fluorescence microscopy (MBFM) was recently developed for non-invasive high-contrast GC visualization. MBFM showed promise for GC examination by high-speed large-area imaging and a robust analysis method is needed to provide GC information. In this study, we developed a deep learning framework for GC image analysis, named dual-channel attention U-Net (DCAU-Net). Dual-channel convolution was used both to extract the overall image texture and to acquire the GC morphological characteristics. A global channel attention module was adopted by combining attention algorithms and channel-wise pooling. DCAU-Net showed 93.1% GC segmentation accuracy and 94.3% GC density estimation accuracy. Further application to both normal and ocular surface damage rabbit models revealed the spatial variations of both GC density and size in normal rabbits and the decreases of both GC density and size in damage rabbit models during recovery after acute damage. The GC analysis results were consistent with histology. Together with the non-invasive high-contrast imaging method, DCAU-Net would provide GC information for the diagnosis of ocular surface diseases.


Assuntos
Aprendizado Profundo , Oftalmopatias , Lagomorpha , Animais , Coelhos , Células Caliciformes/metabolismo , Túnica Conjuntiva/patologia , Lágrimas/metabolismo , Oftalmopatias/metabolismo , Contagem de Células
19.
BMC Ophthalmol ; 23(1): 479, 2023 Nov 22.
Artigo em Inglês | MEDLINE | ID: mdl-37993825

RESUMO

BACKGROUND: Conjunctival chemosis (CC) is an extremely rare symptom of pituitary neuroendocrine tumor (PitNET). We report an extremely rare case of PitNET manifesting as severe CC. CASE PRESENTATION: A 48-year-old male was admitted to our hospital with severe CC, proptosis, and ptosis of the right eye. Magnetic resonance imaging demonstrated the tumor mass invading the cavernous sinus (CS) with cystic lesion. The patient underwent emergent endoscopic transsphenoidal surgery, and the pathological diagnosis was PitNET. CC of the right eye remarkably improved after the surgery. Glucocorticoid therapy was performed for right oculomotor nerve palsy, which rapidly improved. The postoperative course was uneventful and the patient was discharged from our hospital without hormone replacement. CONCLUSIONS: CC caused by CS invasion of PitNET can be cured by early surgical treatment. Therefore, PitNET is important to consider in the differential diagnosis of CC.


Assuntos
Seio Cavernoso , Exoftalmia , Tumores Neuroendócrinos , Neoplasias Hipofisárias , Masculino , Humanos , Pessoa de Meia-Idade , Tumores Neuroendócrinos/diagnóstico , Tumores Neuroendócrinos/patologia , Neoplasias Hipofisárias/diagnóstico , Neoplasias Hipofisárias/patologia , Neoplasias Hipofisárias/cirurgia , Seio Cavernoso/patologia , Seio Cavernoso/cirurgia , Túnica Conjuntiva/patologia , Exoftalmia/patologia
20.
J AAPOS ; 27(6): 374-376, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37863176

RESUMO

Pyogenic granuloma, also known as lobular capillary hemangioma, is a benign vascular lesion that primarily affects the skin and mucous membranes. It is not pyogenic; nor is it granulomatous. It typically arises in response to local trauma or surgery, irritation, hormonal changes, or chronic inflammation, and it sometimes occurs spontaneously. The occurrence of pigmented pyogenic granuloma in the conjunctiva and cornea without any history of trauma or surgery is extremely rare, particularly in children. We report the clinical presentation, diagnostic evaluation, and successful management of bilateral biopsy-proven conjunctival and corneal pigmented isolated pyogenic granuloma in an 11-year-old girl. No signs of recurrence were seen at the 3-months follow-up.


Assuntos
Granuloma Piogênico , Criança , Feminino , Humanos , Granuloma Piogênico/diagnóstico , Granuloma Piogênico/cirurgia , Granuloma Piogênico/patologia , Pele/patologia , Córnea/patologia , Túnica Conjuntiva/patologia , Inflamação
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