Background The purpose of this article is to evaluate the positivity of conjunctival sac swab by PCR (Polymerase chain reaction) test in COronaVIrus Disease 19 (COVID-19) patients. Methods Inclusion criteria of our study were COVID-19 patients hospitalized during March 2021 in inpatient wards at University Hospitals in towns Bratislava and Zilina, Slovakia. The conjunctival sac swabs collected by four ophthalmologists were stored for 24 h, then analyzed in the laboratory of the Department of Microbiology and Immunology, Jessenius Faculty of Medicine in Martin, Comenius University, Slovakia. The sampling apparatus, used for conjunctival sac swab, was the Dacron polyester swab. Results We examined one group of 302 COVID-19 patients, 168 Male (56%) and 134 Female (44%). The patients’ mean age was 66.3 ± 13.66 years, ranging from 25 to 96 years, and the mean length of hospital stay in our patients with a nasopharyngeal positive PCR test was 7.33 ± 4.76, from 2 to 24 days. The PCR tests from the conjunctival sac swabs were positive in 33 patients (11%), negative in 259 patients (86%), and ten patients (3%) were with the unclear result. In the group of 33 positive patients were 17 males with a mean age of 74.6 ± 13.59 years and 16 females with a mean age of 70.63 ± 14.17 years. The cycle threshold (CT) values differed significantly between conjunctival sac swabs from the nasopharynx and the conjunctiva. Medians of the values were 25.1 (14.1, 32.1) and 31.5 (22.6, 36.6) (P < 0.001), respectively. Conclusion This study affirmed that in COVID-19 patients the SARS-CoV-2 was detectable with PCR test in conjunctival sac swab, but the positivity rate was only about one to ten cases (11%).
Uveal melanoma (UM) is an ocular tumor with a dismal prognosis. Despite the availability of precise molecular and cytogenetic techniques, clinicopathologic features with limited accuracy are widely used to predict metastatic potential. In 51 UM tissues, we assessed a correlation between the expression of nine proteins evaluated by immunohistochemistry (IHC) (Melan-A, S100, HMB45, Cyclin D1, Ki-67, p53, KIT, BCL2, and AIFM1) and the presence of UM-specific chromosomal rearrangements measured by multiplex ligation-dependent probe amplification (MLPA), to find IHC markers with increased prognostic information. Furthermore, mRNA expression and DNA methylation values were extracted from the whole-genome data, achieved by analyzing 22 fresh frozen UM tissues. KIT positivity was associated with monosomy 3, increasing the risk of poor prognosis more than 17-fold (95% CI 1.53–198.69, p = 0.021). A strong negative correlation was identified between mRNA expression and DNA methylation values for 12 of 20 analyzed positions, five located in regulatory regions of the KIT gene (r = −0.658, p = 0.001; r = −0.662, p = 0.001; r = −0.816; p < 0.001; r = −0.689, p = 0.001; r = −0.809, p < 0.001, respectively). DNA methylation β values were also inversely associated with KIT protein expression (p = 0.001; p = 0.001; p = 0.015; p = 0.025; p = 0.002). Our findings, showing epigenetic deregulation of KIT expression, may contribute to understanding the past failure to therapeutically target KIT in UM.
Uveal melanoma (UM) is an ocular tumor with a dismal prognosis. It is the most frequent primary intraocular tumor in adults. The primary goal of treatment for uveal melanomas is to prevent metastasis. Despite outstanding advances in the diagnosis and treatment of primary UM, nearly 50% of patients develop metastases via hematogenous dissemination. Estimation of prognosis for patients with UM can be achieved by detecting genetic alterations or epigenetic changes in the tumor tissues. However, these techniques are not always available. The clinicopathological characteristics with limited accuracy are widely used instead to predict metastatic potential. Identifying novel markers with prognostic potential can help refine the prognosis of UM patients. As we know, no existing therapy has a significantly better impact on preventing metastasis. Based on published theories, the key role is existing micrometastasis before therapy starts. Researchers are focusing on developing adjuvant systemic therapy for metastatic UM. Getting to know the cause of metastatic uveal melanoma is crucial in it.
Purpose Implementation of quality-of-life standards for patients with secondary glaucoma after surgery. Material and methods Data analysis included secondary surgical glaucoma patients with a time interval of 4 years. Patients were followed up to 3 years after surgery to answer questions related to subjective perceptions after the surgical intervention (pain, discomfort, near vision, distance vision, intermediate vision, and normal activity). We were also interested in the overall quality of life and the effect on the patient's psyche when performing certain surgical techniques. Results As part of the questionnaire, patients were asked 36 questions. Responses were received from 98 patients. Thirty-five respondents (97.2%) of patients who underwent cyclocryopexy reported tolerable, minimal, or no pain during and immediately after surgery, with the majority of patients reporting minimal pain. Twenty-one patients (58.3%) did not complain of pain until one year after surgery. According to the survey, 16 respondents (25%) had undergone trabeculectomy. Most respondents reported tolerable pain during surgery, minimal pain for 2 weeks after surgery, and no or minimal pain 2 years after surgery. Eleven respondents (68.8%) answered that their eyesight improved in daily life, but the majority of nine (56.3%) did not notice any change in their vision during short-distance movement, short-distance work, or reading. Most serious problems had patients after cyclocryocoagulation or enucleation of the eye globe. Conclusion Secondary glaucoma surgery for every patient should be personalized and tailored to the patient's every need, taking into account the patient's current health status, knowledge and skills as well as socioeconomic circumstances.
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