Acceso a la provisión de salud auditiva en pacientes con Presbiacusia: Un modelo para la atención pública en Chile / Access to the provision of hearing health in patients with presbycusis: A new model of care for public hospitals in Chile

Introducción: La Presbiacusia es frecuente, genera un impacto negativo en la calidad de vida de las personas y costos para la sociedad. En Chile el acceso a salud auditiva está garantizado por GES, pero está limitado por disponibilidad de médicos especialistas. Objetivo: Evaluar un modelo de atención de pacientes con Presbiacusia en el sistema público que sea seguro, eficaz y eficiente. Material y Método: Pacientes mayores de 65 años que consultaron por primera vez en el Servicio de Otorrinolaringología del Hospital Padre Hurtado por hipoacusia entre junio y noviembre de 2022. Se realizó anamnesis, otomicroscopía y audiometría tonal. Se definieron signos de alarma en la audiometría: hipoacusia asimétrica y presencia de diferencia osteo-aérea. Estadística descriptiva con programa SSPS. Protocolo aprobado por el Comité de Ética de Investigación de Seres Humanos del SSMSO. Resultados: Se reclutaron 267 pacientes, 57,7% sexo femenino, mediana edad 77 años (rango 65 a 100 años). En la otomicroscopía se identificó tapón de cerumen en 15,7% (IC 95% 11,6%-20,6%) y otitis media crónica en 7,5% (IC 95% 4,5%-10,9%). Signos de alarma en la audiometría: hipoacusia sensorioneural asimétrica 21,7% (IC 95% 17,2%-26,6%) y gap osteo-aéreo 12,4% (IC 95% 8,6%-16,5%). En 62,2% (IC 95% 56,2%-68,2%) de los pacientes no había signo de alar-ma en al audiometría ni tapón de cerumen. Conclusión: La derivación de pacientes con Presbiacusia directamente a examen de audiometría es seguro en al menos un 62,2% de los pacientes, lo que disminuye las barreras en la provisión de salud auditiva en el sistema público en Chile.

Introduction: Presbycusis affects a significant proportion of elderly subjects with negative impact in the quality of life and economic costs for society. In Chile, GES guarantees the provision of hearing aids, but the access to medical specialists is scarce. Objective: Explore a model of care for patients with Presbycusis in the public sector of health that provides a secure protocol of care and reduces the barriers to access. Material and Method: Patients that attended the outpatient clinic of Otorhinolaryngology from Hospital Padre Hurtado because of hearing loss, between the months of June and November of 2022. All patients were subject to anamnesis, otomicroscopy, and tonal audiometry. Red flags in the audiometry: asymmetric hearing loss or the presence of an air-bone gap. Descriptive statistical analysis with SSPS. The protocol was approved by the local ethics committee. Results: We included 267 patients, 57, 7% female, median age 77 years (range 65 to 100). Earwax prevalence 15.7% (IC 95% 11.6%, 20.6%), chronic otitis media prevalence 7.5% (IC 95% 4.5%, 10.9%). Audiometric red flags_ asymmetric hearing loss in 21.7% (IC 95% 17.2%-26.6%), air-bone gap in 12.4% (IC 95% 8.6%-16.5%). In 62, 2% (IC 95% 56, 2%-68, 2%) of the subjects there were no red flags or earwax. Conclusion: A model of care for patients with Presbycusis that includes direct assessment with audiometry in the public health system is safe in at least 62, 2% of the cases. This observation can lead to an important reduction in the waiting time to access a hearing aid.

Inhibitory effect of Pingwei capsule on oxidative stress in GES-1 cells af-ter malignant transformation and its mechanism / 中国病理生理杂志

AIM:To observe the effect of Pingwei capsule on the precancerous lesions of gastric cancer(PLGC)cell model induced by N-methyl-N'-nitro-N-nitrosoguanidine(MNNG),and to preliminarily explore its mecha-nism.METHODS:Blank serum and Pingwei capsule-containing serum were prepared for later use.A PLGC cell model was established by MNNG-induced human gastric mucosal epithelial cell line GES-1.To evaluate the model,cell morpho-logical changes were observed under inverted microscope,and the expression of proliferating cell-related antigen Ki67 was detected by immunofluorescence staining.CCK-8 assay was used to screen the optimal intervention concentration and time of serum containing drugs.Reactive oxygen species(ROS)content in cells was detected using a fluorescent probe DCFH-DA.Malondialdehyde(MDA)content was detected by ELISA,and the activity of superoxide dismutase(SOD)and gluta-thione peroxidase(GSH-Px)was detected using biochemical reagents.A novel fluorescent probe JC-10 was used to detect mitochondrial membrane potential.The mRNA expression levels of Ki67 and melanoma differentiation-associated gene-7(MDA-7)were detected by real-time fluorescence quantitative PCR.The protein expression levels of Ki67,interleukin-6(IL-6)and MDA-7 were detected by Western blot.RESULTS:Compared with normal group,the ROS and MDA levels in model group and blank serum group were significantly increased(P<0.01),while the activity of SOD and GSH-Px was significantly decreased(P<0.01).The mitochondrial membrane potential was significantly decreased(P<0.01).The protein expression levels of Ki67 and IL-6 were significantly increased(P<0.01),while the protein expression level of MDA-7 was significantly decreased(P<0.01).There were no significant differences of the above indicators between model group and blank serum group(P>0.05).Compared with blank serum group,the Pingwei capsule-containing serum group showed significantly decreased ROS and MDA levels(P<0.01),significantly increased activity of SOD and GSH-Px(P<0.05),significantly increased mitochondrial membrane potential(P<0.01),significantly decreased protein expres-sion levels of Ki67 and IL-6(P<0.01),and significantly increased protein and mRNA expression levels of MDA-7(P<0.01).CONCLUSION:Pingwei capsule can significantly alleviate MNNG-induced oxidative damage and inflammatory response,and regulate the expression of oncogenes and tumor suppressor genes,thereby playing a role in prevention and treatment of PLGC.

Inhibitory effect of astragalus membranaceus injection on apoptosis and autophagy induced by enterovirus 71 / 中国生物制品学杂志

@#Objective To investigate the effect of astragalus membranaceus（AM）injection on apoptosis and autophagy of human gastric epithelial cell line（GES⁃1）induced by enterovirus 71（EV71）. Methods GES⁃1 cells were cultured in vitro and divided into infected group（EV71 infected at a MOI of 3 and control group（no virus infected）. The morpho⁃logical changes of EV71 infected cells were observed by inverted microscope. The level of VP1 in GES⁃1 cells infected with EV71 was detected by Western blot；CCK⁃8 assay was used to detect the viability of GES⁃1 cells infected with EV71；Nuclear staining with DAPI was used to observe the morphological changes of nuclear apoptosis infected with EV71. GES⁃1 cells were divided into control group（without virus infection），infection group and AM intervention group with final concentration of 1，2. 5，5 and 10 μg／mL，respectively. Western blot was used to detect the effect of AM intervention on the expression of apoptosis⁃related proteins Caspase⁃3，PARP and autophagy⁃related proteins LC3 and P62 in GES⁃1 cells infected withEV71. CCK⁃8 method was used to detect the effect of AM intervention on the viability of GES⁃1 cells infected with EV71. Results GES⁃1 cells were round，shrunken with nuclear pyknosis and uneven size；VP1 level increased（t = 41. 56，P < 0. 01），cell viability decreased（t = 19. 07，P < 0. 01），Caspase⁃3 and PARP proteins were cut off（t = 35. 29 and 3. 648， P < 0. 01 and 0. 021 8，respectively），LC3Ⅱ／LC3Ⅰ ratio increased（t = 10. 16，P = 0. 000 5）and P62 protein was degraded（t = 68. 68，P < 0. 01）；AM inhibited the degradation of Caspase⁃3，PARP and P62 proteins induced by EV71 （t = 52. 66，59. 60 and 40. 22，respectively，each P < 0. 01）and increased the ratio of LC3Ⅱ／LC3Ⅰ（t = 5. 521，P = 0. 005 3），andreducedtheinhibitoryeffectofEV71ontheviabilityofGES⁃1cells（t =4. 420，P =0. 0115）. Conclusion EV71 infection induced apoptosis of GES⁃ 1 cells and AM intervention inhibited EV71 induced apoptosis by inhibiting EV71 induced autophagy.

Role and mechanism of IGF2BP3 in malignant transformation of human gastric epithelial cells induced by MNNG / 环境与职业医学

Background N6-methyladenosine (m6A) RNA methylation may play an important role in the process of malignant transformation of cells induced by environmental carcinogens. However, the specific roles and mechanisms need to be further explored. Objective To explore the role and mechanism of m6A binding protein insulin-like growth factor 2 mRNA-binding protein 3 (IGF2BP3) in the malignant transformation of human gastric mucosal epithelial cells GES-1 induced by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG). Methods Based on the GES-1 malignant transformation cells MC-30, a stable knockdown IGF2BP3 MC-30 cell line (MC30-shIGF2BP3, abbreviated as MC30-shI3) was constructed by lentiviral transfection technology, and a negative control group (MC30-NC) was also prepared. Real-time quantitative polymerase chain reaction (qRT-PCR) and Western blotting were applied to detect the mRNA expression and protein levels of IGF2BP3. RNA binding protein immunoprecipitation (RIP-qPCR) was used to examine the combination between IGF2BP3 protein and MYC mRNA in malignant cells MC-30. Furthermore, the stability of MYC mRNA was detected by actinomycin D assay. CCK-8 and Transwell respectively were employed to detect cell proliferation, migration, and invasion. Western blotting was applied to detect the expression of EMT markers (N-cadherin, Vimentin, α-SMA, and Snail). The role of the downstream target gene MYC was further elucidated by a rescue assay in MC30-shI3 cells transfected with a plasmid overexpressing MYC to observe changes in cellular phenotypes (proliferation, migration, invasion) and expression of key EMT proteins. Results Compared with the control group, the expression of IGF2BP3 mRNA was up-regulated after 5, 10, 20, and 40 μmol·L−1 MNNG infection of GES-1 cells (P<0.05). After 20 μmol·L−1 MNNG infection, the expression level of IGF2BP3 mRNA increased with prolongation of exposure time (P<0.05). Compared with the control group, the mRNA and protein expression levels of IGF2BP3 were up-regulated in the 10th, 20th, and 30th generations of 5 μmol·L−1 MNNG malignant transformation (P<0.05). The results of qRT-PCR and Western blotting showed that, compared with the MC30-NC group, the IGF2BP3 and MYC mRNA expression and protein expression decreased in the MC30-shI3 group (P<0.01). The CCK8 and transwell assay results showed that, compared with the MC30-NC group, the cell proliferation, migration, and invasion abilities significantly reduced in the MC30-shI3 group (P<0.01). The results of the Western blotting showed that, compared with the MC30-NC group, the protein levels of EMT markers N-cadherin, Vimentin, α-SMA, and Snail decreased in the MC30-shI3 group (P<0.01). The results of RIP-qPCR showed that, compared with the IgG group, the mRNA level was higher for the enriched MYC in the IGF2BP3 group (P<0.01); the results of the actinomycin D assay showed that, compared with the MC30-NC group, the stability of MYC mRNA significantly reduced in the MC30-shI3 group (P<0.01). While the rescue experiment showed that, compared with the IGF2BP3 knock-down+vector group, the MYC protein level significantly increased in the IGF2BP3 knock-down + MYC over-expression group (P<0.01), the proliferation, migration, and invasion abilities significantly enhanced (P<0.01), and the EMT key proteins (N-cadherin, Vimentin, α-SMA, Snail) increased in the MC30-shI3+MYC group (P<0.01). Conclusion Exposure to MNNG could result in up-regulation of IGF2BP3 expression in GES-1 cells. IGF2BP3 may enhance the proliferation, migration, and invasion of malignantly transformed human gastric epithelial cells by binding to MYC mRNA and increasing its stability and expression level and thus promoting the EMT process, which in turn affects the progression of malignant transformation.

Protective effect of against ethanol-induced gastric ulcer and its mechanism / 浙江大学学报·医学版

: To investigate the protective effect of (FD) against ethanol-induced gastric ulcer and its mechanism. : Human gastric epithelial GES-1 cells were divided into normal control group, model control group, FD 95% alcohol extract group, FD 50% alcohol extract group and FD decoction extract group. Gastric ulcer was induced by treatment with 1% ethanol in GES-1 cells. The cell proliferation was detected with MTT method in each group. Sixty SD rats were randomly divided into normal control group, model control group, ranitidine group and low-dose, medium-dose, high-dose FD 95% alcohol extract groups (150, 300, 600 mg/kg). The corresponding drugs were administrated by gavage for The gastric ulcer model was induced by intragastric administration of anhydrous ethanol. The gastric ulcer area and ulcer inhibition rate of rats were measured in each group; the degree of gastricmucosal damage was observed by scanning electron microscopy; the levels of tumor necrosis factor (TNF)-α, interleukin (IL)-6, IL-1β in serum and the content of malondialdehyde (MDA), superoxide dismutase (SOD), glutathione (GSH), catalase (CAT) in gastric tissues were detected by ELISA method. : 95% alcohol extract of FD had the strongest protective effect on proliferation of GES-1 cells. In animal experiments, compared with the normal control group, a large area of ulcers appeared on the gastric mucosa in the model control group, while the ulcer areas of the FD groups and ranitidine group were significantly smaller than that of the model control group (all <0.05). Compared with the model control group, FD groups and ranitidine group significantly reduced the levels of TNF-α, IL-1β, IL-6 in serum and the MDA content in the gastric tissues, and increased the activity of SOD, CAT and GSH in gastric tissues (all <0.05). : The 95% alcohol extract of FD can reduce the levels of TNF-α, IL-1β and IL-6 in serum and the content of MDA in gastric tissues, and increase the activity of SOD, CAT and GSH in gastric tissues to achieve the protective effect against gastric ulcer.

First report of bla GES-1 in Proteus mirabilis clinical isolates

Abstract Proteus mirabilis is one of the main pathogens causing urinary tract infections and sepsis. To our knowledge, this is the first report of a P. mirabilis hosting bla GES. The presence of these genes was determined using PCR and sequencing. We identified the presence of bla GES-1 in all three isolates. In addition, we identified the bla KPC-2 and bla NDM-1 genes in the two strains. These data emphasize the importance of monitoring and surveillance of all enterobacteria. The circulation of P. mirabilis strains carrying bla GES-1 constitutes a new scenario of resistance in this species and should be an epidemiological alert for global health.

Work process of river family health teams from the perspective of Primary Care managers / Proceso laboral de los equipos de salud de la familia fluviales bajo la óptica de los gestores de la Atención Primaria / Processo de trabalho das equipes saúde da família fluviais na ótica dos gestores da Atenção Primária

Abstract Objective: To analyze the work process carried out by the river family health strategy teams in a municipality in the Amazon region through the perception of the managers. Method: An evaluative study with a qualitative approach. Data were collected through semi-structured interviews with managers of Primary Healthcare, document analysis and participant observation of the work by content analysis. Results: Seven managers participated. Two thematic categories stood out: "Knowledge and practices in the work process of river teams" and "Reports of successful practice experiences". Conclusion: Integrated work and team autonomy are present in the work process; successful practices are encouraged, as well as the use of light and hard-light technologies.

Resumen Objetivo: Analizar el proceso laboral llevado a cabo por los equipos de las estrategias de salud de la familia fluviales en municipio de la región amazónica mediante la percepción de los gestores. Método: Estudio evaluativo con abordaje cualitativo. Se recogieron los datos mediante entrevistas semiestructuradas con gestores de la Atención Primaria de Salud, análisis documental y observación participante del trabajo con análisis de contenido. Resultados: Participaron siete gestores. Se destacan dos categorías temáticas: "Saberes y prácticas en el proceso laboral de los equipos fluviales" y "Relatos de experiencias de prácticas exitosas". Conclusión: El trabajo integrado y la autonomía de los equipos están presentes en el proceso laboral; se incentivan las prácticas exitosas, así como la utilización de tecnologías ligeras y ligeras duras.

Resumo Objetivo: Analisar o processo de trabalho realizado pelas equipes das estratégias de saúde da família fluviais em município da região amazônica por meio da percepção dos gestores. Método: Estudo avaliativo com abordagem qualitativa. Os dados foram coletados por meio de entrevistas semiestruturadas com gestores da Atenção Primária em Saúde, análise documental e observação participante do trabalho com análise do conteúdo. Resultados: Participaram sete gestores. Destacam-se duas categorias temáticas: "Saberes e práticas no processo de trabalho das equipes fluviais" e "Relatos de experiências de práticas exitosas". Conclusão: O trabalho integrado e a autonomia das equipes estão presentes no processo de trabalho; práticas exitosas são incentivadas, bem como a utilização de tecnologias leves e leves-duras.

Helicobacter pylori virulence factor vacuolating cytotoxin A ( VacA) promotes homologous recombi-nation repair in GES-1 cells / 中华微生物学和免疫学杂志

Objective To analyze the impact of Helicobacter pylori standard strain (Hp P12) and its virulence factor vacuolating cytotoxin A ( VacA) on DNA damage and homologous recombination ( HR) repair in a human gastric epithelial cell line (GES-1). Methods Strains of Hp P12 and vacA gene knock-out Hp P12 ( Hp P12 ΔvacA) were respectively used to infect GES-1 cells at a multiplicity of infection of 100. GES-1 cells treated with etoposide (50μmol/L) or mitomycin (0. 5μg/ml) for 2 h were used as posi-tive control. Western blot and immunofluorescence were performed to detect the expression of DNA damage marker protein γH2AX and key HR repair proteins (Rad51, pMRE11, CtIP and pCtIP) and the recruitment of them at DNA damage sites. Human embryonic kidney HEK-293 ( DR-GFP) cells were infected with Hp P12 and Hp P12 ΔvacA strains to verify the impact of VacA on HR repair efficiency. Results The expres-sion and recruitment of γH2AX and key HR repair proteins ( Rad51, pMRE11, CtIP and pCtIP) were in-creased in Hp P12-infected cells as compared with that in uninfected and Hp P12 ΔvacA-infected cells ( all P<0. 05). To evaluate the HR repair efficiency, I-SceⅠ plasmid-transfected HEK-293 (DR-GFP) cells were infected with Hp P12 and Hp P12 ΔvacA and the results showed that green fluorescent protein ( GFP)-positive cells were decreased after infection, especially in Hp P12 ΔvacA-infected cells (both P<0. 05). Conclusions Hp P12 infection could cause DNA damage and promote HR repair in GES-1 cells, in which the virulence factor VacA played an important role.

Inconsistent effect of chloroquine on apoptosis of normal gastric epithelial cells GES-1 and gastric cancer cell line HGC-27 / 中国免疫学杂志

Objective:To compare the effect of chloroquine on apoptosis of normal gastric epithelial cells and gastric cancer cell line HGC-27. Methods:Change of these two kinds of cells were observed by inverted microscope after treating with CQ. HGC-27 cells were detected on the effect of apoptosis by DAPI nuclear staining after treating with CQ. The proliferation of cells were measured by CCK-8. Changes of mitochondrial membrane potential were investigated by JC-1 after treating with CQ. The expression of apoptosis protein effector enzyme Caspase-3 and substrate PARP in these two kinds of cells were tested by Western blot after using chloroquine (CQ) and rapamycin ( rapamycin, RAP ) to treat cells 72 h. Results: After treated with 10 μmol/L CQ 72 h, morphological characteristics of GES-1 cells and HGC-27 cells could be visible under the microscope,CQ induced apoptosis of GES-1 cells,on the contrary,it could make the HGC-27 cell get widened,the number of apoptotic cells gradually increased,the cell density decreased,cell atrophy and gradually turned round,cytoplasm reduced,at last,lose normal cell morphology. After two kinds of cells treated with CQ 72 h,as for GES-1 cell nuclei stained light,nuclear size and shape were not changed,however,HGC-27 nuclei showed pyknosis or granular fluorescence dense concentrated form. CCK-8 results showed that comparing with normal gastric epithelial cells GES-1,the pro-liferation of gastric cancer HGC-27 cells activity could be inhibited by CQ. JC-1 results showed that the change of the red fluorescence to green fluorescence in HGC-27 cells treated by CQ. Western blot showed that after being treated with CQ and RAP in normal gastric epithelial cells and HGC-27 cell line 72 h,the expression of apoptosis protein Caspase-3 and PARP in gastric cancer cell HGC-27 decreased significantly,comparing to that in GES-1 cells. Conclusion:Compared to normal gastric epithelial cells,CQ can inhibit human gastric cancer HGC-27 cell viability and induce apoptosis.

Adherencia y caracterización de la población de adultos mayores usuarios de audífonos atendidos en el Servicio de Otorrinolaringología del Hospital Regional de Talca / Adherence and characterization of elderly adults users of hearing aids attended in the Otorhinolaryngology Department at the Regional Hospital of Talca

Introducción: En Chile se ha descrito una baja adherencia al uso de audífonos en la población de adultos mayores, sin embargo, existe escasa información acerca de la realidad actual en regiones. Objetivo: Determinar la adherencia al uso de audífonos y caracterizar a la población de adultos mayores beneficiarios de éstos mediante GES (Garantías Explícitas en Salud) del Hospital Regional de Talca (HRT). Asimismo, determinar las principales variables que se relacionan con la adherencia en este grupo. Material y método: Estudio descriptivo, transversal, correlacional y analítico. Se evaluó a 78 usuarios con CIRUA presencialmente, índice de Barthel y cuestionario complementario. Además, se realizó una visita domiciliaria. Para el análisis de los datos se utilizó estadística descriptiva y pruebas de proporciones. El programa estadístico empleado fue STATA versión 11. Resultados: La adherencia fue del 75%. La edad tuvo una correlación significativa in-versa con la adherencia, las demás variables estudiadas no estarían asociadas. No existe diferencia significativa entre la adherencia arrojada en el HRT versus la visita domiciliaria. Conclusiones: Se sugiere reformular el abordaje al grupo de beneficiarios que tienen mayor edad, enfatizando el rol evaluativo y terapéutico del fonoaudiólogo. Se proponen futuras investigaciones en otras regiones, utilizando metodologías similares e instrumentos validados.

Introduction: In Chile, a low adherence to the use of hearing aids in the elderly population has been described, however, there is a lack of information regarding the current situation in locations outside the capital city. Aim: To determine the adherence to the use of hearing aids, and to characterize the population of elderly people that benefit from the use of the same through the Explicit Guarantees in Health (GES), in the Regional Hospital of Talca (HRT). Furthermore, evaluate the main variables related to adherence in this group. Material and method: Descriptive, cross-sectional, correlational and analytical study. 78 users were evaluated with CIRUA, Barthel Index and a complementary questionnaire in person. Furthermore, a home visit was carried out. For the data analysis, descriptive statistics and proportions tests. Statistical software used was STATA 11. Results: The adherence described was 75%. Age had a significant inverse correlation with adherence, without an association of the other variables studied. There is no significant difference between adherences in the HRT compared with home visits. Conclusions: It is suggested that the approach to elderly beneficiaries be reformulated, emphasizing the evaluative and therapeutic role of the speech therapist. Future research is proposed in other regions of the country, using similar methodologies and instruments validated.

Distribution of the bla OXA, bla VEB-1, and bla GES-1 genes and resistance patterns of ESBL-producing Pseudomonas aeruginosa isolated from hospitals in Tehran and Qazvin, Iran

Abstract INTRODUCTION: Pseudomonas aeruginosa is one of the most common nosocomial pathogens. The emergence of extended spectrum β-lactamases (ESBLs) has been increasingly reported as a major clinical concern worldwide. The main aim of the present study was to determine the distribution of bla OXA, bla PER-1, bla VEB-1, and bla GES-1 genes among ESBL-producing P. aeruginosa isolated from two distinct provinces in Iran. METHODS: In this study, a total of 75 (27.5%) ESBL-producing isolates were identified from 273 P. aeruginosa isolates collected from patients in Qazvin and Tehran. Phenotypic detection of ESBLs and antimicrobial susceptibility testing were performed according to the Clinical and Laboratory Standards Institute guidelines. PCR and sequencing were employed to detect bla OXA-1, bla OXA, bla GES-1, bla PER-1, and bla VEB-1 genes. Isolate genetic relationships were evaluated by repetitive extragenic palindromic sequence-based PCR (REP-PCR). RESULTS: In total, 59 (78.7%) of the ESBL-producing isolates showed multidrug resistance. The highest rates of susceptibility were observed against colistin (75 isolates, 100%) and polymyxin B (75, 100%) followed by amikacin (44, 58.7%), and piperacillin-tazobactam (40, 53.3%). The bla OXA-1 (37.3%) gene was the most common of the genes investigated, followed by bla OXA-4 (32%), bla GES-1 (16%), and bla VEB-1 (13.3%). REP-PCR identified three different genotypes: types A (89.3%), B (6.7%), and C (4%). CONCLUSIONS: We found a significant presence of bla OXA-1, bla OXA-4, bla GES-1, and bla VEB-1 genes among P. aeruginosa isolates, highlighting the need for suitable infection control strategies to effectively treat patients and prevent the further distribution of these resistant organisms.

Draft genome sequence of a GES-5-producing Serratia marcescens isolated in southern Brazil

Abstract Serratia marcescens is a Gram-negative rod intrinsically resistant to polymyxins and usually associated with wound, respiratory and urinary tract infections. The whole genome of the first GES-5-producing S. marcescens isolated from a Brazilian patient was sequenced using Ion Torrent PGM System. Besides blaGES-5, we were able to identify genes encoding for other β-lactamases, for aminoglycoside modifying enzymes and for an efflux pump to tetracyclines.

Preconditioning of ulinastatin alleviates GES-1 cell injury induced by oxygen and glucose deprivation / 实用医学杂志

Objective To observe the effects of the preconditioning of ulinastatin on GES-1 cell injury induced by oxygen and glucose deprivation (OGD). Methods GES-1 cells were cultured in vitro and divided into three groups: normal control group (group N), oxygen and glucose deprivation group (group O), and ulinastatin preconditioning group (group U). The OGD model of GES-1 cells were established by glucose-free medium and three-gas incubator for 6h. Ulinastatin was added to group U 12h before the deprivation of oxygen and glucose. The cell viability and apoptosis were determined by cck-8 and flow cytometry respectively. Western Blot was used to examine the protein expression of Caspase-3 and Cleaved Caspase-3. The TRPV1 mRNA expression was measured by quantitative real-time PCR. Results As compared with group N, the viability of GES-1 was decreased, the apoptotic rate and the expression of Caspase-3 and Cleaved Caspase-3 were increased, and the TRPV1 mRNA expression decreased greatly in group O (P < 0.05). As compared with group O, the aforementioned changes were significantly inhibited in group U. Conclusions Ulinastatin preconditioning could effectively inhibit GES-1 cell injury induced by OGD, which may be related to the inhibition of apoptosis and the upregulation of TRPV1 mRNA expression.

¿Cuáles son las barreras de acceso a la atención odontológica de las mujeres embarazadas? Una revisión de la literatura / What are the barriers of access to women's dental care pregnant? A review of the literature

Introducción: Las enfermedades bucales son altamente prevalentes a nivel mundial; una de las estrategias utilizadas para mejorar el estado de salud bucal de la población es la atención odontológica de la embarazada. En Chile esta atención está garantizada, sin embargo, la cobertura de las atenciones no es la esperada, sólo el 31 por ciento de las mujeres embarazadas accede a la atención odontológica y un 14 por ciento abandona el tratamiento antes de terminarlo. Métodos: El objetivo de este artículo es revisar la evidencia internacional y nacional respecto a las barreras que impiden a las mujeres embarazadas acceder al tratamiento odontológico. Resultados: Se describen diferentes barreras para la atención odontológica de la mujer embarazada, las que se pueden clasificar en las relacionadas con la organización del sistema de salud (costo de la atención, acceso a los prestadores y las características de los proveedores de la atención de salud) y las barreras personales (creencias de las pacientes, percepción de necesidad de tratamiento, miedo a la atención y valoración de la salud bucal). Conclusión: Existe evidencia internacional sobre cuáles son las barreras para el acceso a la atención odontológica de la mujer embarazada, entre ellas, destacan las barreras de acceso, como el costo de atención, sin embargo, a nivel nacional, esa barrera está soslayada, ya que el acceso y la protección financiera están garantizadas gracias a la cobertura GES. Por esta razón son necesarios estudios nacionales que indaguen sobre el fenómeno que impide que las embarazadas chilenas accedan al tratamiento odontológico.(AU)

Introduction: Oral diseases are highly worldwide prevalent; one of the strategies used to improve oral health status of the population is the specific pregnant women dental care program. In Chile this care is guaranteed by law, however, the dental attention coverage is not as well as expected, only 31% of pregnant women have access to dental care and 14percent of them, leave treatment before ending. Methods: The aim of this article is to review international and national evidence regarding the barriers that prevent pregnant women from accessing to dental treatment. Results: Different barriers are described. They can be classified in those related to the organization of the oral health system (care cost access to providers, care health providers characteristics) and personal barriers (patient's beliefs, perceived needs for treatment, fear and oral health assessment). Conclusion: There is international evidence about the barriers to access to pregnant women, dental care including barriers access such the care cost; however, at the national level, this barrier is overlooked since access and the financial protection is guaranteed by GES coverage. More studies are needed to investigate the phenomenon that avoids Chilean pregnant women from accessing to dental treatment.(AU)

Detection of Carbapenemases in Clinical Enterobacteriaceae Isolates Using the VITEK AST-N202 Card / 감염과화학요법

BACKGROUND: The rapid and accurate detection of carbapenemase-producing Enterobacteriaceae (CPE) in clinical microbiology laboratories is essential for the treatment and control of infections caused by these microorganisms. This study was performed to evaluate the ability of the VITEK AST-N202 card to detect CPE isolates. MATERIALS AND METHODS: A total of 43 (Klebsiella pneumoniae, n = 37; Escherichia coli, n = 3; and Enterobacter cloacae, n = 3) CPE isolates and 79 carbapenemase-non-producing Enterobacteriaceae (CNE) isolates were included in this study. The CPE isolates harbored KPC-2 (n = 11), KPC-3 (n = 20), GES-5 (n = 5), VIM-2 (n = 2), IMP-1 (n = 1), NDM-1 (n = 2), or OXA-232 (n = 2). Of the 79 CNE isolates, eight K. pneumoniae isolates were resistant to ertapenem, imipenem, and meropenem, while the remaining 71 isolates were susceptible to the carbapenems. Antimicrobial susceptibilities were tested using the VITEK AST-N202 card, and the results were interpreted as positive when the isolates showed resistant or intermediate results. Modified-Hodge tests (MHTs) were performed using ertapenem or meropenem disks for the screening of carbapenemase production. Polymerase chain reaction (PCR) and direct sequencing were used to identify beta-lactamase genes. RESULTS: Sensitivity of MHT with ertapenem and meropenem disks for the detection of carbapenemase was 81.4% (35/43) and 81.4% (35/43), respectively, and a combination with both antibiotic disks increased the sensitivity to 88.4% (38/43). Specificity of the MHT was 100% (79/79) for the CNE isolates. Sensitivity of ertapenem, imipenem, and meropenem as assessed by the VITEK AST-N202 card was 100% (43/43), 93% (40/43), and 95.3% (41/43), respectively. Specificity (89.8%, 71/79) of the test with each carbapenem was improved to 100% (71/71) when eight carbapenem-resistant CNE isolates were excluded from the testing. CONCLUSION: The VITEK AST-N202 card showed high sensitivity for the detection of carbapenemases in Enterobacteriaceae strains. PCR and sequencing experiments for the detection of carbapenemases are recommended when clinical Enterobacteriaceae isolates show non-susceptibility to carbapenems.

Prevalencia de Caries y Nivel de Higiene Oral en Niños de 6 años Atendidos Bajo la Norma GES y el Modelo JUNAEB / Prevalence of Dental Caries and Oral Hygiene Level in Children Aged 6 Years Attended Under GES and JUNAEB Models

El objetivo del estudio fue conocer la prevalencia de caries e índice de higiene oral en escolares de la comuna de Temuco, y comparar las diferencias del impacto entre dos modelos de atención de salud oral vigentes, bajo norma GES y JUNAEB entre los años 2007­2008. Se realizó un estudio descriptivo observacional en un consultorio del Servicio de Salud, bajo norma GES y un módulo dental JUNAEB. Se seleccionaron mediante muestreo no probabilístico por conveniencia 113 escolares de 6 años. Mediante examen de diagnóstico oral se consignó el índice COP-D, ceo-d e IHO-S al inicio del tratamiento y al control posterior del alta integral. Para los cálculos y estimaciones estadísticas se utilizó el programa Stata 9.0. El total de los estudiantes presentó una alta prevalencia de caries (COP-D 0,88 y ceo-d 3,86) e higiene oral deficiente (IHO-S 1,45). Al comparar el impacto, el modelo JUNAEB mostró mayor disminución de nuevas caries y mejores niveles de higiene oral (-0,70, p=0,0000). Considerando la alta prevalencia de caries, bajo IHO y la necesidad de controles periódicos, la aplicación del modelo JUNAEB generó menor recurrencia de lesiones cariosas y mejor IHO, gracias a su enfoque preventivo, curativo y educativo.

The aim of this work was to study the prevalence of caries and oral hygiene index among schoolchildren in Temuco, and compare the impact differences between two models of oral health care existing, under standard GES and JUNAEB model between the years 2007-2008. A descriptive observational study in an consulting health service, under standard GES and dental JUNAEB module. We selected by non-probability sampling 113 schoolchildren aged 6 years. The COP-D, ceo-d e OHI-S indexes were recorded at oral examination at the initiation of treatment and aftercare in the final integral treatment. Calculations and statistical estimates used Stata 9.0. The total number of students showed a high prevalence of caries (COP-D ceo-d 0.88 and 3.86) and poor oral hygiene (OHI-S 1.45). When comparing the impact, the JUNAEB model showed greater reduction of new dental caries and better oral hygiene levels (-0.70, p=0.0000). In conclusion, considering the high prevalence of dental caries, poor OHI and the need for periodic controls, application of the JUNAEB model generated a lower recurrence of dental caries and better OHI using a preventive, healing and educational approach.

Stress-related hormone norepinephrine induces interleukin-6 expression in GES-1 cells

In the current literature, there is evidence that psychological factors can affect the incidence and progression of some cancers. Interleukin 6 (IL-6) is known to be elevated in individuals experiencing chronic stress and is also involved in oncogenesis and cancer progression. However, the precise mechanism of IL-6 induction by the stress-related hormone norepinephrine (NE) is not clear, and, furthermore, there are no reports about the effect of NE on IL-6 expression in gastric epithelial cells. In this study, we examined the effect of NE on IL-6 expression in immortalized human gastric epithelial cells (GES-1 cells). Using real-time PCR and enzyme-linked immunoassay, we demonstrated that NE can induce IL-6 mRNA and protein expression in GES-1 cells. The induction is through the β-adrenergic receptor-cAMP-protein kinase A pathway and mainly at the transcriptional level. Progressive 5′-deletions and site-directed mutagenesis of the parental construct show that, although activating-protein-1 (AP-1), cAMP-responsive element binding protein (CREB), CCAAT-enhancer binding protein-β (C/EBP-β), and nuclear factor κ-light-chain-enhancer of activated B cells (NF-κB) binding sites are all required in the basal transcription of IL-6, only AP-1 and CREB binding sites in the IL-6 promoter are required in NE-induced IL-6 expression. The results suggest that chronic stress may increase IL-6 secretion of human gastric epithelial cells, at least in part, by the stress-associated hormone norepinephrine, and provides basic data on stress and gastric cancer progression.

Expression and clinical significance of Wnt5a in gastric carcinoma / 实用医学杂志

Objective To study the significance of Wnt5a gene expression in gastric carcinoma (GC). Methods The Wnt5a mRNA expressions in SGC7901 cell line and normal gastric mucosa GES-1 cell line were detected by RT-PCR. The Wnt5a protein expressions in 60 GC and 30 matched tumor-adjacent normal tissue samples were examined by immunohistochemistry using the streptavidin-peroxidase method.χ2 test was used to analyze Wnt5a expression on the clinical pathologic features of gastric carcinoma. Results Both Wnt5a mRNA and Wnt5a protein were significantly higher in SGC7901 cells than those in GES-1 cells. The positive rate of Wnt5a protein expression was also significantly higher in GC than that in tumor-adjacent normal tissue (P < 0.05). Positive expression of Wnt5a was associated with higher degree of regional lymph node metastasis and the later TNM stage (P < 0.05). Conclusion Higher expression of Wnt5a seems to promote invasion and metastasis of gastric cancer, and Wnt5a might play an oncogene-like role in the development of gastric carcinoma.

Study on the effects of intestinal trefoil factor on gastric mucosal epithelial cell proliferation and its signal transduction mechanism / 医学研究生学报

Objective To explore the effects of intestinal trefoil factor ( ITF) on gastric mucosal epithelial cell proliferation and its possible molecular mechanism . Methods The cultured GES-1 cells were treated with ITF in the concentration of 100 ng/mL and 500 ng/mL in vitro, and then were observed using microscope for the morphological analysis .The Cell Counting Kit-8 ( CCK-8) was used to detect the proliferation activity of GES-1.The cultured GES-1 cells were treated with 100 ng/mL ITF and the specific inhibitor of PI3K/Akt signaling pathway LY294002 (15μmol/L) in vitro, and then were observed using microscope for the morphological analysis . The proliferation activity of treated GES-1cells was detected using CCK-8 and the expressions of p-Akt and Akt of PI3K/Akt signaling pathway were determined by Western blot . Results Compared with the control group , the proliferation activity of GES-1 cells in-creased after being treated with ITF and the higher concentration of ITF induced the higher proliferation activity .LY294002 inhibited the increased proliferation activity of GES-1induced by ITF.The data of Western blot indicated that ITF induced the expression of p -Akt and activated the P3IK/Akt signaling pathway to modulate the proliferation activity of GES -1 cells.However, LY294002 inhibited the PI3K/Akt signaling pathway and then decreased the proliferation activity of GES -1 cells. Conclusion ITF could promote the proliferation ac-tivity of GES-1 cells by activating PI3K/Akt signaling pathway .

Comunidad informada: estrategia para mejorar uso del GES Salud Oral en población de 6 años / Community oral health literacy: improving use of oral-health care guarantee in children aged 6

La evaluación del GES salud oral integral para niños/as de 6 años (GES-6años) mostró una baja utilización de esta garantía, con un menor uso en los beneficiarios de escuelas municipales. El empoderamiento y la alfabetización en salud de los padres permiten mejorar su rol como agentes promotores de la salud de sus hijos. Objetivo: implementar y evaluar una estrategia de empoderamiento y alfabetización en salud bucal de la comunidad sobre sus derechos garantizados en salud para aumentar el uso de la garantía GES-6años. Métodos: diseño mixto. Mediante metodología cualitativa se diseñará un instrumento comunicacional, adecuado cultural y socialmente, para ser enviado a la comunidad beneficiaria de esta garantía. Mediante un ensayo comunitario no aleatorio este instrumento, orientado a empoderar y alfabetizar sobre la salud bucal y el GES-6años, será enviado como carta personalizada (intervención) firmada por el alcalde/sa con un mensaje dirigido a los niños/as beneficiarios del GES-6años y otro dirigido a sus padres/apoderados. Se seleccionarían escuelas por conglomerados (comunas) de las dos regiones del país seleccionadas por conveniencia según residencia de los investigadores participantes del estudio. De las comunas cuyas autoridades acepten participar, se seleccionarían aleatoriamente las comunas a intervenir y las comunas controles. El análisis de los datos evaluará si existen diferencias estadísticamente significativas en la prevalencia de uso de estas garantías entre los niños/as de los establecimientos de educación municipal de las comunas intervenidas respecto a los de las comunas controles.

The assessment of comprehensive oral health care for children aged 6 (GES-6years) showed low utilization of this guarantee, with lower use for children from municipal public schools. The empowerment and health literacy of parents improve their role as oral-health promoters for their children. Objective: To implement and to assess a strategy of empowerment and health literacy of the community about their guaranteed health rights to increase the use of GES-6years. Methods: A mixed design. Using qualitative methodology we will design a communication tool, culturally and socially appropriate to be sent to the beneficiary community of this guarantee. Using a nonrandomized community trial, this instrument designed to empower and improve oral health literacy on GES-6 guarantee, will be sent as personalized letter (intervention) signed by the mayor of the municipality with a message aimed to children beneficiaries for GES -6years and another addressed to their parents/guardians. Schools would be selected from clusters (communes) of the two regions selected for convenience. Communes will be randomly selected among those whose authorities agree to participate, and will be selected as for intervention or control. Data analysis will assess the differences in the prevalence of use of this guarantee among children from municipal schools belonging to the intervention or control arm.