Hemorragia supracoroidea diferida después de queratoplastia endotelial automatizada con pelado de la membrana de Descemet (DSAEK) / Delayed suprachoroidal hemorrhage after descemet stripping automated endothelial keratoplasty (DSAEK)

Este estudio, una serie de 2casos y revisión de la literatura, pretende describir el segundo y tercer caso conocido de hemorragia supracoroidea diferida (DSCH) tras una queratoplastia endotelial automatizada con pelado de Descemet (DSAEK). La hemorragia supracoroidea consiste en la presencia de sangre en el espacio supracoroideo. La agudeza visual final no suele superar el 0,1 (escala decimal). Ambos casos presentan factores de riesgo: alta miopía, cirugía intraocular previa, hipertensión arterial o estar anticoagulados. El diagnóstico de hemorragia supracoroidea diferida se realizó en la primera visita de seguimiento: referían dolor intenso y agudo horas después de la cirugía. Fueron tratados con drenaje transescleral. La hemorragia supracoroidea diferida es una complicación rara pero devastadora y puede ocurrir después de un trasplante lamelar, como la queratoplastia endotelial automatizada con pelado de Descemet. Conocer esta complicación así como sus factores de riesgo permitirá un diagnóstico precoz, lo que mejorará el pronóstico de los pacientes (AU)

This study, a case series of 2patients and a literature review, aims to describe the second and third known cases of delayed suprachoroidal hemorrhage after Descemet stripping automated endothelial keratoplasty (DSAEK). The suprachoroidal hemorrhage is defined as the presence of blood in the suprachoroidal space; final visual acuity is rarely greater than 0.1 (decimal scale). Both cases presented had known risk factors: high myopia, previous ocular surgeries, arterial hypertension, and being under anticoagulant therapy. The diagnosis of delayed suprachoroidal hemorrhage was made at the 24-hour follow-up visit, as they recalled a sudden and tremendous acute pain hours after surgery. Both cases were drained through a scleral approach. Delayed suprachoroidal hemorrhage is a rare but devastating consequence that can occur after DSAEK. Awareness of the most critical risk factors allows for early identification, which is of paramount importance for the prognosis of these patients (AU)

Delayed suprachoroidal hemorrhage after Descemet Stripping Automated Endothelial Keratoplasty (DSAEK).

This study, a case series of 2 patients and a literature review, aims to describe the second and third known cases of delayed suprachoroidal hemorrhage after Descemet stripping automated endothelial keratoplasty. The suprachoroidal hemorrhage is defined as the presence of blood in the suprachoroidal space; final visual acuity is rarely greater than 0.1 (decimal scale). Both cases presented had known risk factors: high myopia, previous ocular surgeries, arterial hypertension, and being under anticoagulant therapy. The diagnosis of delayed suprachoroidal hemorrhage was made at the 24-h follow-up visit, as they recalled a sudden and tremendous acute pain hours after surgery. Both cases were drained through a scleral approach. Delayed suprachoroidal hemorrhage is a rare but devastating consequence that can occur after Descemet stripping automated endothelial keratoplasty. Awareness of the most critical risk factors allows for early identification, which is of paramount importance for the prognosis of these patients.

La concentración plasmática de microARN-1-3p se asocia con fibrilación auricular subclínica en los pacientes con ictus criptogénico / Plasma levels of miRNA-1-3p are associated with subclinical atrial fibrillation in patients with cryptogenic stroke

Introducción y objetivos La identificación de biomarcadores de fibrilación auricular (FA) subclínica en los pacientes con ictus criptogénico (ICr) es de gran interés. Con dicho objetivo, se evaluó el perfil de microARN circulante de los pacientes con ICr y FA frente a aquellos en ritmo sinusal. Métodos Se incluyó a 64 pacientes con ICr consecutivos monitorizados mediante Holter subcutáneo. Se seleccionó a 18 pacientes (9 con FA y 9 en ritmo sinusal persistente) para determinación de 754 microARN mediante tecnología de alto rendimiento. Se incluyó a 9 pacientes adicionales con ictus y FA concomitante para guiar la selección de microARN. Los microARN de interés se replicaron en una cohorte independiente (n=46). La asociación de biomarcadores con FA a los 6 y 12 meses se analizó mediante regresión logística. Resultados Ocho microARN mostraron expresión diferencial entre los pacientes con y sin FA. El miR-1-3p, un regulador génico involucrado en la arritmogénesis cardiaca, fue el único que permaneció significativamente más elevado en pacientes con ICr y FA de la cohorte de repetición, y además mostró una discreta asociación con la carga arrítmica. Los valores de miR-1-3p por encima de la mediana y la fracción de eyección de la aurícula izquierda se asociaron de forma independiente con la presencia de FA a los 6 y 12 meses. Conclusiones En nuestra cohorte, los valores plasmáticos de miR-1-3p fueron más altos en los pacientes con ICr y FA en el seguimiento. Nuestros resultados indican que el miR-1-3p podría ser un nuevo biomarcador de FA oculta en los pacientes con ICr (AU)

Introduction and objectives Identifying biomarkers of subclinical atrial fibrillation (AF) is of most interest in patients with cryptogenic stroke (CrS). We sought to evaluate the circulating microRNA (miRNA) profile of patients with CrS and AF compared with those in persistent sinus rhythm. Methods Among 64 consecutive patients with CrS under continuous monitoring by a predischarge insertable monitor, 18 patients (9 with AF and 9 in persistent sinus rhythm) were selected for high-throughput determination of 754 miRNAs. Nine patients with concomitant stroke and AF were also screened to improve the yield of miRNA selection. Differentially expressed miRNAs were replicated in an independent cohort (n=46). Biological markers were stratified by the median and included in logistic regression analyses to evaluate their association with AF at 6 and 12 months. Results Eight miRNAs were differentially expressed between patients with and without AF. In the replication cohort, miR-1-3p, a gene regulator involved in cardiac arrhythmogenesis, was the only miRNA to remain significantly higher in patients with CrS and AF vs those in sinus rhythm and showed a modest association with AF burden. High (= above the median) miR-1-3p plasma values, together with a low left atrial ejection fraction, were independently associated with the presence of AF at 6 and 12 months. Conclusions In this cohort, plasma levels of miR-1-3p were elevated in CrS patients with subsequent AF. Our results preliminarily suggest that miR-1-3p could be a novel biomarker that, together with clinical parameters, could help identify patients with CrS and a high risk of occult AF (AU)

Neurohormonal activation induces intracellular iron deficiency and mitochondrial dysfunction in cardiac cells.

BACKGROUND: Iron deficiency (ID) is common in patients with heart failure (HF) and is associated with poor outcomes, yet its role in the pathophysiology of HF is not well-defined. We sought to determine the consequences of HF neurohormonal activation in iron homeostasis and mitochondrial function in cardiac cells. METHODS: HF was induced in C57BL/6 mice by using isoproterenol osmotic pumps and embryonic rat heart-derived H9c2 cells were subsequently challenged with Angiotensin II and/or Norepinephrine. The expression of several genes and proteins related to intracellular iron metabolism were assessed by Real time-PCR and immunoblotting, respectively. The intracellular iron levels were also determined. Mitochondrial function was analyzed by studying the mitochondrial membrane potential, the accumulation of radical oxygen species (ROS) and the adenosine triphosphate (ATP) production. RESULTS: Hearts from isoproterenol-stimulated mice showed a decreased in both mRNA and protein levels of iron regulatory proteins, transferrin receptor 1, ferroportin 1 and hepcidin compared to control mice. Furthermore, mitoferrin 2 and mitochondrial ferritin were also downregulated in the hearts from HF mice. Similar data regarding these key iron regulatory molecules were found in the H9c2 cells challenged with neurohormonal stimuli. Accordingly, a depletion of intracellular iron levels was found in the stimulated cells compared to non-stimulated cells, as well as in the hearts from the isoproterenol-induced HF mice. Finally, neurohormonal activation impaired mitochondrial function as indicated by the accumulation of ROS, the impaired mitochondrial membrane potential and the decrease in the ATP levels in the cardiac cells. CONCLUSIONS: HF characteristic neurohormonal activation induced changes in the regulation of key molecules involved in iron homeostasis, reduced intracellular iron levels and impaired mitochondrial function. The current results suggest that iron could be involved in the pathophysiology of HF.

Conjunctival cytology in floppy eyelid syndrome: objective assessment of the outcome of surgery.

AIMS: Upper eyelid shortening is the main surgical procedure in floppy eyelid syndrome (FES). The efficacy of surgery is assessed by improvements in the symptoms, since objective evaluation is difficult. Conjunctival impression cytology was assessed as an objective method for the evaluation of the effectiveness of surgery for FES. METHOD: The study was a prospective interventional study in 16 patients (26 eyelids) with FES, who were enrolled over a period of 8 months. Patients were examined 1-4 weeks before surgery and 16 weeks after surgery. Cases were classified into three groups according to the severity of symptoms and papillary reaction. A full-thickness pentagonal wedge resection was performed in the upper eyelid. Impression cytology was performed in all patients at 1-4 weeks before surgery and 16 weeks after surgery. RESULTS: Postoperative improvements in cellular morphology and goblet cell count were found in 20 of 22 eyelids (91%) and this led to a decrease of least one grade in Nelson's classification. In two cases (9%) the Nelson grade remained stable. Postoperative improvement on cytology was statistically significant with the Wilcoxon signed ranks test (p<0.001). CONCLUSION: Conjunctival cytology provides an objective method for the evaluation of the efficacy of surgical techniques proposed for the treatment of eyelid laxity syndromes.