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SUMMARY: Mesenchymal stem cells are characterized by in vitro high proliferation and multilineage potential maintenance. This study aimed to isolate and characterize equine YS mesenchymal stem cells and compare these with amniotic membranes. The yolk sac (YS) and amniotic membranes (AM) were obtained from 20 pregnant mares with gestational age around 30 days. Cells were cultured in α-MEM supplemented with 15 % FBS, 1 % antibiotic solution, 1 % L-glutamine and 1 % nonessential amino acids. To cell characterization we used cytogenetic analysis, fibroblast colony-forming unit assays, cell growth curves, immunophenotyping, flow cytometry, differentiation assays and teratoma formation. Results: Both cell sources presented fibroblastoid and epithelioid-like format. The YS cells have lower colony formation potential then AM ones, 3 versus 8 colonies per 103 plated cells. However, YS cells grew progressively while AM cells showed steady. Both, the YS and amnion cells immunolabeled for Oct-4, Nanog, SSEA-3, cytokeratin 18, PCNA, and vimentin. In addition, presented mesenchymal, hematopoietic, endothelial and pluripotency markers in flow cytometry. Discussion: Both cell sources presented high plasticity and differed into osteogenic, adipogenic, and chondrogenic lineages, and no tumor formation in nude mice was observed. The results suggest that horse YS may be useful for cell therapy such as amnion-derived cells.

RESUMEN: Las células madre mesenquimales se caracterizan por una alta proliferación in vitro y un mantenimiento potencial de múltiples líneas. Este estudio tuvo como objetivo aislar y caracterizar las células madre mesenquimales del saco vitelino equinas y compararlas con las membranas amnióticas. Se obtuvo el saco vitelino (SV) y las membranas amnióticas (MA) de 20 yeguas preñadas con edad gestacional de aproximadamente 30 días. Las células se cultivaron en α -MEM suplementado con 15 % de FBS, 1 % de solución antibiótica, 1 % de L-glutamina y 1 % de aminoácidos no esenciales. Para la caracterización celular utilizamos análisis citogenéticos, ensayos de unidades de colonias de fibroblastos, curvas de crecimiento celular, inmunofenotipaje, citometría de flujo, ensayos de diferenciación y formación de teratomas. Ambas fuentes celulares presentaron formato fibroblastoideo y epitelioide. Las células SV tienen un potencial de formación de colonias más bajo que las de MA, 3 versus 8 colonias por 103 células en placa. Sin embargo, las células SV crecieron progresivamente mientras que las células MA se mostraron estables. Tanto las células YS como las células amnios están inmunomarcadas para Oct-4, Nanog, SSEA-3, citoqueratina 18, PCNA y vimentina. Además, presentó marcadores mesenquimales, hematopoyéticos, endoteliales y pluripotenciales en citometría de flujo. Ambas fuentes celulares presentaron alta plasticidad y diferían en linajes osteogénicos, adipogénicos y condrogénicos, y no se observó formación de tumores en ratones. Los resultados sugieren que el SV de caballo puede ser útil para la terapia celular, como las células derivadas de amnios.

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El proyecto se realizó con el objetivo de describir la valoración de Enfermería por dominios según NANDA-Internacional, en gestantes con diagnóstico de RPM, ingresadas en el Servicio de Ginecología y Obstetricia del Hospital Provincial General Docente Riobamba, Ecuador, durante el periodo octubre 2018 - enero 2019. Se realizó un estudio descriptivo, con enfoque cuantitativo, de corte transversal; cuya población de estudio quedó constituida por 61 individuos. Los datos fueron recolectados mediante la aplicación de una entrevista estructurada a cada paciente y de la revisión de documentos (historias clínicas). Se observaron 8 dominios alterados. El 63% de las mujeres participantes tuvo insuficientes controles prenatales. En el 78.7% de los partos se reportó líquido amniótico de aspecto claro. El 73.7% de las gestantes presentó antecedentes de infección. Las mayores afectaciones fueron en los dominios referidos a sexualidad/reproducción y promoción de la salud. La mayoría presentó RPM entre las 39 y 40.6 semanas y la FCF normal. Predominaron las madres adolescentes que declararon no planificar su embarazo.

This research was carried out in order to describe the assessment of Nursing by domains according to NANDA-International in pregnant women with a diagnosis of PROM admitted to the Gynecology and Obstetrics Service of the Provincial General Hospital of Riobamba-Ecuador, during the period October 2018 - January 2019. A cross-sectional and descriptive study was carried out with a quantitative approach; whose study population was made up of 61 individuals. The data were collected by applying a structured interview to each patient and reviewing documents (medical records). 8 altered domains were observed. 63% of the participating women had insufficient prenatal controls. Clear-looking amniotic fluid was reported in 78.7% of deliveries. 73.7% of pregnant women presented a history of infection. The greatest affectations were in the domains referring to sexuality / reproduction and health promotion. The majority presented PROM between 39 and 40.6 weeks and normal FHR. Adolescent mothers who declared not planning their pregnancy predominated.

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Objective: To compare the use of Fresh Frozen Amniotic Membrane (FFAM) and Buccal Pad of Fat (BPF) for reconstruction of oral mucosal defect after surgical excision of leukoplakia. Material and Methods: Twenty patients were randomly selected and divided into two groups. Group 1 use amniotic membrane graft and Group 2 BPF. Both groups were evaluated preoperatively and postoperatively. Incisal opening, epithelialization and fibrosis were evaluated after one month of surgery. Chi square and Student t tests were used. Results: According to the presence of smoking habits, the highest frequencies were for smoking (30%) and betel leaf areca nut with tobacco (30%). Regarding the diameter of oral leukoplakia, in 40% of the participants it was 2x3 cm2. In Group1, after one month of surgery preoperative and postoperative inter-incisal opening values were 44.20 ± 3.37 and 42.05 ± 3.47 (p<0.001). In Group 2, preoperative and postoperative inter-incisal opening values were 44.09 ± 3.32 and 43.01±3.38 (p>0.05). When FFAM was used complete epithelialization in 70% and incomplete epithelialization in 30% patients. When BPF was used the results were almost similar. Fibrosis occurred in 30% in Group 1. There were no complications like flap necrosis, infectiona and hematoma formation. Conclusion: Incisal opening was significantly better in Fresh Frozen Amniotic Membrane Group, epithelialization and fibrosis were almost same in both groups after surgical excision of oral leukoplakia.

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