RESUMEN
INTRODUCTION: The handling of antineoplastic drugs should follow strict supervision and safety rules to minimize the occupational exposure risks to professionals involved. The external surface contamination of drug vials is recognized as a health risk. So, our goal was to determine if there is residual contamination on the vials and containers surface of the antineoplastic drugs doxorubicin (DOX) and cyclophosphamide (CP). METHODS: A cross-sectional study was conducted. Samples were collected using a uniform sampling procedure on the inner surfaces of the packages/boxes and the outer surfaces of the vials. The analyzes were executed by high-performance liquid chromatography/mass spectrometry (UHPLC-MS/MS). RESULTS: A total of 209 samples were analyzed, 66 of CP and 143 of DOX. CP levels were detected in nine samples (13.63%), three were below the lower limit of quantification (LLQ) and the other six had contamination levels ranging from 1.24 to 28.04â ng/filter. DOX levels were detected in 36 samples (25.17%), two were below the LLQ and the others had levels between 1.32 and 664.84â ng/filter. The majority of samples with residual contamination were in vials (80.0%), however, boxes also showed contamination. CONCLUSIONS: The results revealed the presence of residual contamination in the vials and packages of CP and DOX drugs. Although the residues found in each sample are small, special care should be taken in the handling and disposal of the antineoplastic drugs. The use of personal protective equipment is fundamental while handling the vials and packaging of cytotoxic drugs.
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Antineoplásicos , Exposición Profesional , Humanos , Espectrometría de Masas en Tándem , Estudios Transversales , Antineoplásicos/análisis , Ciclofosfamida/análisis , Doxorrubicina , Embalaje de Medicamentos , Exposición Profesional/prevención & control , Exposición Profesional/análisis , Contaminación de Equipos , Monitoreo del Ambiente/métodos , Contaminación de Medicamentos/prevención & controlRESUMEN
BACKGROUND: The protein kinase B (AKT)/mammalian target of rapamycin (mTOR) signaling pathway regulates early follicular activation and follicular pool maintenance in female germline cells. Fragile X mental retardation 1 (FMR1) regulates folliculogenesis and it is variably expressed in patients with Premature Ovary Insufficiency. FMR1 expression is supposed to be linked to AKT/mTOR signaling in an ovarian response dependent manner as demonstrated in recent in vitro and in vivo studies in the female germline in vitro and in vivo. METHODS: We evaluated changes in the expression of AKT/mTOR signaling pathway genes by real time PCR in the peripheral blood of 74 patients with Premature Ovarian Insufficiency and 56 fertile controls and correlated their expression with FMR1 expression. RESULTS: Expression of the genes AKT1, TSC2, mTOR, and S6K was significantly more abundant in patients with POI than in the controls. For AKT1, TSC2 and mTOR, gene expression was not affected by FMR1-CGG repeat number in the 5´-untranslated region. FMR1 and S6K expression levels, however, were significantly upregulated in patients with POI and an FMR1 premutation. Independent of a premutation, expression of mTOR, S6K, and TSC2 was significantly correlated with that of FMR1 in all patients. Furthermore, when grouped according to ovarian reserve, this effect remained significant only for mTOR and S6K, with higher significance note in patients with Premature Ovarian Insufficiency than in the controls. CONCLUSIONS: In Premature ovarian insufficiency patients, activation of AKT/mTOR signaling pathway is remarkable and putatively pathognomonic. Additionally, it seems to be triggered by an FMR1/mTOR/S6K linkage mechanism, most relevant in premutation carriers.
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Proteína de la Discapacidad Intelectual del Síndrome del Cromosoma X Frágil/genética , Insuficiencia Ovárica Primaria , Proteínas Proto-Oncogénicas c-akt , Serina-Treonina Quinasas TOR , Adulto , Estudios de Casos y Controles , Femenino , Proteína de la Discapacidad Intelectual del Síndrome del Cromosoma X Frágil/metabolismo , Regulación de la Expresión Génica , Humanos , Reserva Ovárica/genética , Insuficiencia Ovárica Primaria/sangre , Insuficiencia Ovárica Primaria/genética , Proteínas Proto-Oncogénicas c-akt/sangre , Proteínas Proto-Oncogénicas c-akt/genética , Transducción de Señal/fisiología , Serina-Treonina Quinasas TOR/sangre , Serina-Treonina Quinasas TOR/genética , Regulación hacia Arriba/fisiologíaRESUMEN
INTRODUCTION: Our goal was to demonstrate the effects of occupational exposure to antineoplastic drugs on oxidative stress parameters and DNA damage in health professionals who manipulate and administer antineoplastic drugs in a University Hospital in Southern Brazil. METHODS: The case-control study with a longitudinal design, involved 64 individuals, 29 of them pharmacists, pharmacy technicians and nurses who were occupationally exposed to antineoplastic drugs and 35 professionals who were not exposed. Gene mutations were determined by micronucleus from salivary fluid; DNA damage by comet assay and oxidative stress parameters in whole blood were also evaluated. RESULTS: All workers exposed to antineoplastic drugs used personal protective equipment (PPE). It was demonstrated that the total nonprotein thiol and thiobarbituric acid reactive substances levels showed interaction between group and time, with higher levels one week after handling/administration of antineoplastic drugs in the exposed group (GEE, p ≤ 0.0001 and p = 0,013, respectively). Additionally, there was a group effect on the activities of the catalase and glutathione peroxidase antioxidant enzymes (GEE, p = 0.027 and p ≤ 0.0001, respectively), and workers occupationally exposed to antineoplastic drugs had higher enzyme activities compared to those not exposed. No genotoxic damage was demonstrated through the evaluated parameters. CONCLUSIONS: Despite the correct use of PPE, professionals occupationally exposed to antineoplastic drugs were more susceptible to oxidative stress than those not exposed. The evaluation of the studied parameters is especially important for the definition of conducts and practices in the area, always in search of guaranteeing the establishment of a rational policy to protect workers' health.
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Antineoplásicos/efectos adversos , Personal de Salud , Exposición Profesional/efectos adversos , Estrés Oxidativo/efectos de los fármacos , Adulto , Estudios de Casos y Controles , Daño del ADN , Hospitales Universitarios , Humanos , Masculino , Equipo de Protección PersonalRESUMEN
PURPOSE: Female fertility preservation prior to gonadotoxic therapies can be achieved by the cryopreservation of ovarian cortical tissue. Immature oocytes may be recovered during the preparation, matured in vitro and lead to live births, thereby providing an additional option for fertility preservation. The purpose of this study was to test the feasibility of this approach in a setting with unilateral biopsy of a small piece of ovarian tissue and minimal tissue preparation prior to shipment to an external cryobank. METHODS: A prospective observational clinical study in an academic center was performed from January 2018 through December 2019. Ovarian tissue was obtained laparoscopically. Immature oocytes were recovered by minimal preparation of the tissue before shipment to an external cryobank for cryopreservation. In vitro maturation was performed on recovered immature oocytes. RESULTS: Twelve patients were enrolled. Immature oocytes could be recovered for all. The maturation rate was 38.9% (n = 14/36). Metaphase II (MII) were either directly used for intracytoplasmic sperm injection (ICSI) with a fertilization rate of 66.6% (n = 4/6) or vitrified (n = 8). PNs were cryopreserved (n = 4). Vitrified MII were warmed with a post-warming vitality rate of 75.0% (n = 3/4) and used for ICSI with a fertilization rate of 33.3% (n = 1/3). CONCLUSIONS: Immature oocytes can be successfully retrieved from ovarian tissue through minimal tissue preparation prior to shipment to a cryobank, matured in vitro, fertilized and cryopreserved for potential future fertility treatments. The total number of oocytes available for fertility preservation can be increased even without controlled ovarian stimulation in a situation where only ovarian biopsy for cryopreservation is performed. TRIAL REGISTRATION: German Clinical Trials Register (DRKS), DRKS00013170. Registered 11 December 2017, https://www.drks.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00013170 .
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Criopreservación/métodos , Preservación de la Fertilidad/métodos , Técnicas de Maduración In Vitro de los Oocitos/métodos , Recuperación del Oocito/métodos , Oocitos/fisiología , Adulto , Femenino , Humanos , Estudios Prospectivos , Adulto JovenRESUMEN
PURPOSE: Implantation rates differ according to ovulation induction agents in ART. This study investigates the different local endometrial effects of LH- versus hCG-induced ovulation. METHODS: Endometrial stromal cells from healthy patients were cultured with hCG or LH in different concentrations, supplemented with 250 ng/mL hCG and progesterone after 2 and 5 days. In addition after decidualization induction, cells were treated with hCG (50 or 250 ng/mL) or LH (10 or 50 ng/mL) for 3 days. Receptivity markers expression was evaluated by real-time quantitative PCR on day 3 and 6. RESULTS: On day 3, non-decidualized cells treated with LH showed an increased expression of IGFBP1, IL-8 and CXCL12 compared to hCG. The expression pattern changed on day 6, where cells treated with hCG showed higher expression of implantation markers compared to LH-treated cells. Furthermore, on day 3, decidualized cells treated with hCG250 showed an increased IL8 and CXCL12 expression compared to LH10. CONCLUSIONS: LH seems to modulate the local endometrial expression of receptivity markers earlier compared to hCG; however, the effect is not sustained over time in cells without prior decidualization. Though, in decidualized cells, pattern changed and an earlier positive effect of hCG was shown on IL-8 and CXCL12.
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Gonadotropina Coriónica/farmacología , Endometrio/metabolismo , Hormona Luteinizante/farmacología , Inducción de la Ovulación/métodos , Adulto , Biomarcadores/metabolismo , Células Cultivadas , Quimiocina CXCL12/genética , Implantación del Embrión/efectos de los fármacos , Femenino , Humanos , Interleucina-8/genéticaRESUMEN
PURPOSE: The semaphorins are related to angiogenesis and cell proliferation depending on the tissue. The purpose of this study was to assess gene expression of class 3 semaphorin (SEMA3A-F) and protein expression of semaphorin 3A (SEMA3A) within human endometrium throughout the menstrual cycle. METHODS: Gene expression of SEMA3A-F was analyzed by real-time PCR (qRT-PCR) and protein expression of SEMA3A was analyzed by ELISA in endometrial biopsies in the proliferative and secretory phase of the menstrual cycle. RESULTS: Gene expression of SEMA3A, SEMA3C, SEMA3D, and SEMA3E was statistically significant decreased in secretory compared to proliferative phase endometrium (p < 0.05). Accordingly, SEMA3A protein expression in the secretory phase was lower than protein expression in proliferative phase endometrium (p ≤ 0.05). CONCLUSION: SEMA3A, 3C, 3D, and 3E are possibly related to cell proliferation in the endometrium, being more expressed in the proliferative phase of the cycle. This finding may stimulate studies of class 3 semaphorins as a possible target for treatment of endometrial pathologies.
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Proliferación Celular/genética , Endometrio/metabolismo , Ciclo Menstrual/metabolismo , Semaforinas/genética , Semaforinas/metabolismo , Biopsia , Endometrio/patología , Ensayo de Inmunoadsorción Enzimática , Femenino , Humanos , Glicoproteínas de Membrana , Proteínas de la Membrana , Proteínas del Tejido Nervioso , Reacción en Cadena en Tiempo Real de la Polimerasa , Semaforina-3A/metabolismoRESUMEN
Main goal of this study is to detect the possible alterations in microRNA (miRNA) expression and the pathway targeted in plasma at the time of embryo transfer and pregnancy testing dependent on the assisted reproductive treatment (ART) outcome after ovarian hyperstimulation for in vitro fertilization. Changes in miRNA expression in plasma of women, who became pregnant (n = 6) vs women who failed implantation (n = 6) following day 5 embryo transfer (ET), were investigated at the day of ET and pregnancy testing (PT). Protein expression to validate the finding was performed with a sample size of n = 20 (10 per group) using enzyme-linked immunosorbent assay. Enriched Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were performed using DIANA-miRPath, v3.0 software based on predicted targets by DIANA-microT-CDS. 4 miRNAs could be identified as possible biomarkers for implantation success. The 11 miRNAs showing the highest significant alterations were all associated with the regulation of WNT3 and WNT7a. While WNT7a presented with a significant decrease between ET and PT in case of ongoing pregnancy, women with implantation failure showed unaltered concentrations. WNT3 presented with a significant decrease in both groups. However, the loss of WNT3 between ET and PT was significantly higher in patients who became pregnant. Main limitation of this prospective study is its small sample size, defining it as a pilot analysis. To conclude, we could demonstrate a significant change in miRNA profile dependent on the ART outcome affecting Wnt pathway. Our findings indicate a possible prospective use of miRNA as biomarkers for implantation success.
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Transferencia de Embrión , Fertilización In Vitro , Infertilidad/terapia , MicroARNs/metabolismo , Proteínas Wnt/metabolismo , Vía de Señalización Wnt , Proteína Wnt3/metabolismo , Adulto , Técnicas de Cultivo de Embriones , Implantación del Embrión , Transferencia de Embrión/efectos adversos , Femenino , Fertilidad , Fertilización In Vitro/efectos adversos , Regulación del Desarrollo de la Expresión Génica , Humanos , Infertilidad/genética , Infertilidad/metabolismo , Infertilidad/fisiopatología , MicroARNs/genética , Proyectos Piloto , Embarazo , Índice de Embarazo , Estudios Prospectivos , Inyecciones de Esperma Intracitoplasmáticas , Factores de Tiempo , Transcriptoma , Resultado del Tratamiento , Proteínas Wnt/genética , Vía de Señalización Wnt/genética , Proteína Wnt3/genética , Adulto JovenRESUMEN
Uterine leiomyomas are the most common benign smooth muscle cell tumors in women. Estrogen (E2), progesterone (P4) and environmental factors play important roles in the development of these tumors. New treatments, such as mifepristone, have been proposed. We evaluated the gene expression of total (PRT) and B (PRB) progesterone receptors, and the histone acetyltransferase (HAT) and deacetylase (HDAC) activity after treatment with E2, P4 and mifepristone (RU486) in primary cell cultures from uterine leiomyoma and normal myometrium. Compared to myometrium, uterine leiomyoma cells showed an increase in PRT mRNA expression when treated with E2, and increase in PRB mRNA expression when treated with E2 and P4. Treatment with mifepristone had no significant impact on mRNA expression in these cells. The HDAC activity was higher in uterine leiomyoma compared to myometrial cells after treatment with E2 and E2 + P4 + mifepristone. HAT activity was barely detectable. Our results suggest that ovarian steroid hormones modulate PR, and mifepristone was unable to decrease PRT and PRB mRNA. The higher activity of HDAC leiomyoma cells could be involved in transcriptional repression of genes implicated in normal myometrium cell function, contributing to the maintenance and growth of uterine leiomyoma.
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Estrógenos/farmacología , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Leiomioma/metabolismo , Miometrio/efectos de los fármacos , Progestinas/farmacología , Receptores de Progesterona/metabolismo , Neoplasias Uterinas/metabolismo , Adulto , Células Cultivadas , Estradiol/metabolismo , Estradiol/farmacología , Estrógenos/metabolismo , Femenino , Histona Acetiltransferasas/genética , Histona Acetiltransferasas/metabolismo , Histona Desacetilasas/genética , Histona Desacetilasas/metabolismo , Antagonistas de Hormonas/farmacología , Humanos , Leiomioma/enzimología , Leiomioma/patología , Persona de Mediana Edad , Mifepristona/farmacología , Miometrio/citología , Miometrio/metabolismo , Miometrio/patología , Proteínas de Neoplasias/genética , Proteínas de Neoplasias/metabolismo , Progesterona/metabolismo , Progesterona/farmacología , Progestinas/metabolismo , Receptores de Progesterona/genética , Células Tumorales Cultivadas , Neoplasias Uterinas/enzimología , Neoplasias Uterinas/patologíaRESUMEN
OBJECTIVES: The aim of the study was to assess the 2 pathways of vulvar carcinogenesis and correlate immunohistochemical expression of p53 with histopathological findings. MATERIALS AND METHODS: This cross-sectional study included 76 cases. Patients were classified according to the 2004 International Society for the Study of Vulvovaginal Disease Terminology, followed by a review of clinical records and immunohistochemical staining for p53. RESULTS: Fifteen cases were in the human papillomavirus (HPV)-associated pathway (12 cases of usual vulvar intraepithelial neoplasia [VIN] and 3 of warty squamous cell carcinoma [SCC]), and 13 cases were in the HPV-independent pathway (5 cases of differentiated VIN and 8 of keratinizing SCC). Significant differences in p53 expression were observed between the 2 pathways of carcinogenesis: in the lesions related to the HPV-independent pathway, the percentage of p53-positive cells was greater (>25%, p < .001), and the staining pattern was basal (extending into the middle layer) in differentiated VIN and diffuse or infiltrative in warty SCC (p < 0.001). In the lesions HPV-associated pathway, p53 staining was less extensive (≤10% of cells, p < 0.001) and followed basal pattern in usual VIN, whereas warty SCCs were negative for p53 (p < 0.001). CONCLUSIONS: Unique patterns of histological appearance and p53 expression can separate vulvar lesions into 2 distinct pathways of carcinogenesis. We propose that p53 immunohistochemistry may be performed simultaneously with histopathological examination in all cases of VIN and vulvar SCC, because it would aid in definition of the pathway of carcinogenesis and thus enable better clinical follow-up of patients with these conditions.
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Carcinogénesis , Carcinoma/patología , Carcinoma/fisiopatología , Proteína p53 Supresora de Tumor/análisis , Neoplasias de la Vulva/patología , Neoplasias de la Vulva/fisiopatología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Histocitoquímica , Humanos , Inmunohistoquímica , Persona de Mediana Edad , Adulto JovenRESUMEN
The selection of human immature oocytes destined for in vitro maturation (IVM) is performed according to their cumulus-oocyte complex (COC) morphology. In animal models, oocyte pre-selection with brilliant cresyl blue (BCB) staining improves fertilization and blastocyst rates and even increases the number of calves born. As the granulosa cells and cumulus cells (GCs and CCs) have a close relationship with the oocyte and are available in in vitro fertilization (IVF) programs, applying BCB staining to these cells may help to elucidate whether BCB shows toxicity to human oocytes and to determine the safest protocol for this dye. GCs and CCs were isolated from 24 patients who underwent controlled ovarian stimulation. After 48 h, cells were exposed to: Dulbecco's Modified Eagle Medium (DMEM) with or without phenol red, DPBS and mDPBS for 60 min; 13, 20 and 26 µM BCB for 60 min; and 60, 90 or 120 min to 13 µM BCB. Cellular viability was tested using 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide (MTT) and trypan blue assays. The 20 and 26 µM BCB exposures resulted in lower cell viability, similar to when cells were exposed to BCB for 90 or 120 min. GCs and CCs viabilities were equal among control group and 13 µM BCB group after 60 min. BCB staining was not toxic to GCs and CCs when the regime of 13 µM BCB for 60 min was used. Due to the close molecular/biochemical relationship between these cells and the gamete, we propose that it is unlikely that the use of BCB could interfere with the viability/health of human oocytes.
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Células del Cúmulo/citología , Células de la Granulosa/citología , Técnicas de Maduración In Vitro de los Oocitos/métodos , Oxazinas , Proliferación Celular , Supervivencia Celular , Colorantes , Femenino , Humanos , Factores de TiempoRESUMEN
BACKGROUND: Lumpectomy may result in major deformities and asymmetries in approximately one-third of patients. Although oncoplastic surgery (OP) could be a useful alternative to avoid them, lack of strong data is causing some debate. The purpose of this study was to compare aesthetic outcomes in patients undergoing OP versus lumpectomy using three different assessment methods. METHODS: A total of 122 patients were included in this cross-sectional multicentric study; 57 underwent OP (46.7 %), and 65 underwent lumpectomy (53.3 %). Two breast surgeons and two plastic surgeons from different institutions using the Garbay scale independently evaluated aesthetic outcomes. BCCT.core software was applied in both groups, and the patients evaluated their aesthetic outcomes answering a questionnaire about their satisfaction rate. RESULTS: OP group had a higher proportion of excellent aesthetic results according to the BCCT.core software analysis (p = 0.028) and the specialists (p = 0.002). Multifactorial analyses showed that age ≥70 years (RP = 6.02; 95 % confidence interval [CI] 1.73-21.0; p = 0.005), tumors in the medial, inferior, and central quadrants (RP = 4.21; 95 % CI 1.88-9.44; p < 0.001), and large breasts (RP = 7.55; 95 % CI 2.48-23.0; p < 0.001) were significant risk factors for poor aesthetic outcomes after lumpectomy. The patients classified their results as better than those by the specialists and by the software, with no statistical difference between the groups. CONCLUSIONS: Excellent aesthetic results were more frequent in the OP group according to BCCT.core software analysis and specialists. In addition, some clinical conditions and tumor locations in the breast can be considered risky factors for poor aesthetic outcomes in lumpectomy.
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Neoplasias de la Mama/patología , Neoplasias de la Mama/cirugía , Estética , Mamoplastia , Mastectomía Segmentaria , Adulto , Anciano , Actitud del Personal de Salud , Mama/anatomía & histología , Estudios Transversales , Femenino , Humanos , Persona de Mediana Edad , Satisfacción del Paciente , Cirugía Plástica , Resultado del TratamientoRESUMEN
PURPOSE: To assess the metformin effect on endometrial stromal cell decidualization, proliferation, gene and protein expression of IGFBPs, IGFs and their receptors. METHODS: Human endometrial stromal cells (hESCs) were cultured from endometrial biopsies of 11 women undergoing surgery for benign reasons. hESCs were decidualized with and without metformin in increasing doses. Supernatant and cells were harvested after decidualization for 12-14 days, followed by real-time PCR of IGFBP 1-6, IGF I, IGF II and their receptors. Prolactin, and IGFBP-1, -3, and -6 were additionally analyzed in supernatant by ELISA. Proliferation of hESCs and decidualization of hESCs were assessed under the influence of metformin. Data were analyzed using the paired t test with p < 0.05 considered significant. RESULTS: While lower concentrations of metformin (10(-4), 10(-5 )M) did not influence the decidualization and proliferation capacity of hESCs, higher concentrations (10(-3), 10(-2 )M metformin) significantly (p < 0.05) diminished decidualization, as well as stromal cell proliferation in a dose-dependent manner. Higher concentrations of metformin lead to a significant (p < 0.05) dose-dependent attenuation of the progesterone effect with regard to IGFBP-1, -3, -5, -6, as well as IGF I receptor, while it did not change the expression of IGFBP-2 and -4, IGF I and II and the IGF II receptor. This was confirmed on the protein level for IGFBP-1, -3, and -6. CONCLUSION: We were able to demonstrate for the first time a dose-dependent local effect of metformin within hESCs. Metformin might therefore influence locally the endometrial proliferation and maturation, and could open up new treatment options for gynecological diseases by vaginal application of metformin.
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Implantación del Embrión/efectos de los fármacos , Endometrio/metabolismo , Hipoglucemiantes/farmacología , Metformina/farmacología , Células del Estroma/metabolismo , Células Cultivadas , Relación Dosis-Respuesta a Droga , Endometrio/efectos de los fármacos , Células Epiteliales/metabolismo , Femenino , Humanos , Hipoglucemiantes/administración & dosificación , Proteína 1 de Unión a Factor de Crecimiento Similar a la Insulina/genética , Proteína 1 de Unión a Factor de Crecimiento Similar a la Insulina/metabolismo , Factor I del Crecimiento Similar a la Insulina/genética , Factor I del Crecimiento Similar a la Insulina/metabolismo , Factor II del Crecimiento Similar a la Insulina/genética , Factor II del Crecimiento Similar a la Insulina/metabolismo , Metformina/administración & dosificación , Progesterona/farmacología , Prolactina/genética , Prolactina/metabolismo , Receptor IGF Tipo 1/genética , Receptor IGF Tipo 1/metabolismo , Células del Estroma/efectos de los fármacosRESUMEN
BACKGROUND/AIM: Granulosa cells are the source of the most important ovarian steroids. Even in patients without significant improvement in metabolic parameters, metformin has apparently an important effect on the ovary. The aim of this study was to evaluate gene and protein expression of an insulin receptor (IR), insulin-like growth factor-1 (IGF1) receptor (IGF1R) and aromatase in granulosa cells treated with metformin and insulin. METHODS: Luteinized granulosa cells were collected from 27 patients during in vitro fertilization procedures. Cells were isolated, stored in culture for 24 h and divided into four groups: control; metformin for 30 min, and metformin for 30 min plus insulin for 30 or 60 min. RESULTS: IR and IGF1R mRNA expression was significantly enhanced by metformin but was not affected by insulin. Aromatase mRNA expression was significantly reduced in metformin-incubated cells following stimulation with insulin for 30 min. No statistical differences were found in IGF1R and aromatase protein expression, and IR expression was not detected. CONCLUSION: A direct effect of metformin on the gene expression of IGF1R, IR and aromatase was observed. Further studies should investigate the role of IGF1R, IR and aromatase in ovarian physiology for a better understanding of the effect of metformin.
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Aromatasa/metabolismo , Células de la Granulosa/efectos de los fármacos , Hipoglucemiantes/farmacología , Metformina/farmacología , Receptor IGF Tipo 1/metabolismo , Receptor de Insulina/metabolismo , Adulto , Aromatasa/genética , Células Cultivadas , Femenino , Expresión Génica/efectos de los fármacos , Células de la Granulosa/metabolismo , Humanos , Insulina/farmacología , Biosíntesis de Proteínas/efectos de los fármacos , ARN Mensajero/metabolismo , Receptor IGF Tipo 1/genética , Receptor de Insulina/genéticaRESUMEN
INTRODUCTION: The human endometrium undergoes repetitive, cyclical changes under the influence of endocrine signals (estrogen and progesterone). In particular, the extensive tissue remodeling, angiogenesis and leukocyte infiltration that occur during decidualization of the endometrium give rise to an environment that is permissive to blastocyst attachment. However, it is now well established that crosstalk (via paracrine signals) between the trophoblast and the endometrium is also a key for successful implantation. Microarray studies have identified TSG-6 as a gene with elevated expression in endometrial stromal cells following the exposure to trophoblast and immune cell products. TSG-6 is an inflammation-associated protein which acts as a potent inhibitor of neutrophil extravasation and also plays important roles in matrix remodeling, e.g., by promoting hyaluronan (HA) cross-linking and down-regulating the protease network. Female TSG-6 (-/-) mice are infertile and this has been attributed to their inability to ovulate; however, the importance of TSG-6 in implantation has not been directly investigated. MATERIAL AND METHODS: Real-time PCR, as well as immunofluorescence staining was performed on endometrial biopsies of proliferative and secretory phase samples. In addition stromal cell cultures of human endometrium were used to assess the influence of different stimulating factors on the TSG-6 gene and protein expression via real-time PCR and ELISA. RESULTS: Herein demonstrate that TSG-6 mRNA is expressed by the endometrium during the proliferative and secretory phases of the menstrual cycle. We also show that conditioned media from placental tissues induce rapid upregulation of TSG-6 mRNA expression and sustained protein secretion, with evidence that TNF is an important factor in this effect. Furthermore, we demonstrate changes in protein expression in the mid-secretory phase in women affected by recurrent abortions. CONCLUSION: These data suggest that TSG-6 expression might be essential in endometrial matrix organization and feto-maternal communication during the implantation process.
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Moléculas de Adhesión Celular/metabolismo , Endometrio/metabolismo , ARN Mensajero/metabolismo , Células del Estroma/metabolismo , Aborto Habitual/metabolismo , Biopsia , Estudios de Casos y Controles , Moléculas de Adhesión Celular/genética , Células Cultivadas , Endometrio/patología , Ensayo de Inmunoadsorción Enzimática , Femenino , Técnica del Anticuerpo Fluorescente , Fase Folicular/metabolismo , Humanos , Fase Luteínica/metabolismo , Placenta/metabolismo , Embarazo , Reacción en Cadena en Tiempo Real de la Polimerasa , Regulación hacia ArribaRESUMEN
OBJECTIVE: To assess the effect of metformin on gene and protein expression of insulin receptor (IR) and IGF-1 (IGF-1R) receptor in human endometrial stromal cells after stimulation with androgen and insulin. STUDY DESIGN: Primary culture of endometrial stromal cells stimulated with estrogen, progesterone with or without androgen or insulin, and treated with metformin for 24 and 48 h, followed by RNA (qRT-PCR) and protein (Western blot) extraction and analysis. RESULTS: IR gene expression was increased after treatment with insulin (2.9-fold change, p = 0.027) and further after metformin treatment (4.7-fold change, p < 0.001), and in IGF-1R, the group treated with insulin (1.83-fold change) and metformin (1.78-fold change) showed more expression, than control group (p < 0.001). Similarly, IR protein expression was increased after addition of metformin and insulin (249,869 ± 15,878) in relation to the other groups (p < 0.001). Furthermore, cells treated with insulin (153,634 ± 29,123) and androgen plus insulin (162,854 ± 86,258) had a higher IR protein expression compared to control (104,654 ± 5,634) and androgen group (71,595 ± 3,439, (p = 0.045 and 0.021). In groups treated with insulin (127,711 ± 4,591) and androgen plus insulin (151,098 ± 5,194) the protein IGF-1R was increased compared to control (79,355 ± 3,470) and the androgen-only group (79,326 ± 3,114) (p < 0.001). CONCLUSION: Metformin in combination with insulin increased IR protein and gene expressions, while it had no influence on the protein expression of IGF-1R in endometrial stromal cells.
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Endometrio/citología , Hipoglucemiantes/farmacología , Insulina/farmacología , Metformina/farmacología , Receptor IGF Tipo 1/metabolismo , Receptor de Insulina/metabolismo , Andrógenos/farmacología , Western Blotting , Células Cultivadas , Endometrio/efectos de los fármacos , Estrógenos/farmacología , Femenino , Expresión Génica , Humanos , Reacción en Cadena de la Polimerasa/métodos , Progesterona/farmacología , Receptor IGF Tipo 1/genética , Receptor de Insulina/genética , Células del Estroma/efectos de los fármacos , Células del Estroma/metabolismoRESUMEN
Objective: Seminal cryopreservation causes significant damage to the sperm; therefore, different methods of cryopreservation have been studied. The aim of the study was to compare the effects of density gradient processing and washing/centrifugation with seminal plasma removal for cryopreservation in semen parameters. Methods: Seminal samples of 26 normozoospermic patients were divided into 3 parts: with seminal plasma; after washing/centrifugation; and after selection through density gradient. The samples were cryopreserved for at least two weeks. Motility, sperm count, morphology and viability were evaluated before cryopreservation and after thawing. Results: Density gradient processing selected motile and viable sperm with normal morphology in fresh samples (p<0.05). Cryopreservation negatively affected all sperm parameters regardless of the processing performed, and even if the sperm recovery was lower in the density gradient after the thawing, progressive motility, total motility, viability and morphology remained higher (p<0.05). Conclusion: Cryopreservation significantly compromises sperm parameters (motility, morphology, viability). In normozoospermic patients, the density gradients select better quality spermatozoa compared to other processing methods; this benefit was kept after thawing.
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Criopreservación , Preservación de Semen , Adulto , Humanos , Masculino , Criopreservación/métodos , Semen , Análisis de Semen , Preservación de Semen/métodos , Motilidad Espermática , Factores de TiempoRESUMEN
OBJECTIVE: The Mini International Neuropsychiatric Interview (MINI) is one of the most used instruments for the assessment of Mental Disorders, playing an essential role in psychiatric research and in clinical and hospital practice. Despite this, the accuracy of the MINI, when used by a psychiatrist, is poorly studied, particularly in relation to Bipolar Disorder (BD). The early diagnosis of BD and Major Depressive Disorder (MDD) is extremely important, as it provides an opportunity for intervention that can reduce the impact on the patient's daily life and functionality. As such, this study assesses the suitability of MINI for diagnosing BD or MDD in a sample of patients with mood disorders. METHOD: Agreement between the MINI and the clinical interview was assessed in a sample of 347 outpatients by calculating Cohen's kappa, sensitivity, specificity, positive predictive value, negative predictive value, and the area under the curve (AUC). RESULTS: The sample consisted of 347 patients with mood disorders. 279 were women (80.40%), 105 (30.3%) were diagnosed with MDD and 242 (69.7%) with BD from the assessment performed in the clinical interview. In the MINI assessment, 97 individuals (28%) were classified with a diagnosis of MDD and 250 (72%) with BD. We found a sensitivity of 87.2% and specificity of 62.8% for the MINI in the diagnosis of BD and a Cohen's kappa between the MINI and the clinical interview of 0.51. The AUC was 0.75. CONCLUSIONS: MINI has greater sensitivity (87.2%) for the diagnosis of BD and greater specificity (87.2%) for the diagnosis of MDD. In addition, the moderate Cohen kappa (0.51) and AUC (0.75) values between the MINI and the clinical interview are acceptable when considering most available psychiatric diagnostic tools.
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Trastorno Bipolar , Trastorno Depresivo Mayor , Humanos , Femenino , Masculino , Trastornos del Humor/diagnóstico , Trastorno Depresivo Mayor/diagnóstico , Trastorno Depresivo Mayor/psicología , Trastorno Bipolar/diagnóstico , Trastorno Bipolar/psicología , Salud Mental , Escalas de Valoración PsiquiátricaRESUMEN
INTRODUCTION: Suicide is a worldwide health concern and up to date there is no good predictor of it except a previous suicide attempt. Therefore, there are increasing efforts in the understanding of which factors, genetic or environmental, are associated with suicide behaviour. OBJECTIVE: To review evidence of the effect of childhood trauma and impulsivity on suicidal behavior through a systematic review and meta-analysis. METHODS: Searches were conducted on the 12th of June 2021 in the PubMed, Scopus, and Web of Science databases. Two reviewers evaluated each record for eligibility and discussed upon disagreement, when no consensus was reached, a third reviewer was involved to make a decision. RESULTS: A total of 11,530 records were identified through the searches. After duplicates were removed, 6,595 records remained to be screened. The full text was sought for 1,561 records. Our qualitative synthesis included 22 studies, from which 9 were included in the meta-analyses. We found a significant effect of sexual abuse, physical abuse, emotional abuse and physical neglect on suicide attempts in the prisoners, and Substance Use Diorder (SUD) subgroups. Moreover, there was a significant effect of Childhood Trauma Questionnaire (CTQ) total score and emotional neglect dimension for all the subgroups. CONCLUSION: The present study has provided an overview of the state-of-the-art research on childhood trauma and impulsivity and their association with suicidal behavior and quantified their effects on suicide attempts. Hopefully this evidence will be considered in future research and harnessed for clinical gain in detection and treatment of suicide behaviour.
RESUMEN
PURPOSE: This study aims to evaluate and to compare the performance of cervical digital photography (CDP) to the visual inspection with acetic acid (VIA) and visual inspection with Lugol's iodine (VILI) methods for screening the uterine cervix cancer and its precursor lesions in developing countries. METHODS: A cross-sectional study was performed in Brazil. 176 women were evaluated by VIA, VILI, CDP with acetic acid and CDP with Lugol's iodine. Kappa statistic was used to estimate the interobserver and intermethod agreement. Sensitivity, specificity and diagnostic accuracy of the four methods (VIA, VILI, CDP with acetic acid, CDP with Lugol's iodine) was calculated. RESULTS: Interobserver agreement for CDP with acetic acid was K = 0.441 and for CDP with Lugol's iodine was K = 0.533; intermethod agreement of VIA and CDP with acetic acid, K = 0.559; and of VILI and CDP with Lugol's iodine, K = 0.507. Sensitivity and specificity of CDP with acetic acid were 84.00 and 95.83 %, and of CDP with Lugol's iodine were 88.00 and 97.26 %, respectively. The diagnostic accuracy of CDP with acetic acid and CDP with Lugol's iodine was 92.78 and 94.90 %, respectively. CONCLUSION: This was the first study to assess the CDP with Lugol's iodine performance, which had similar performance to the CDP with acetic acid. CDP is considered a promising method for screening the uterine cervix cancer and its precursor lesions in developing countries.
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Adenocarcinoma/patología , Carcinoma de Células Escamosas/patología , Países en Desarrollo , Detección Precoz del Cáncer/métodos , Fotograbar , Displasia del Cuello del Útero/patología , Neoplasias del Cuello Uterino/patología , Ácido Acético , Adulto , Brasil , Cuello del Útero/patología , Colorantes , Estudios Transversales , Femenino , Humanos , Indicadores y Reactivos , Yoduros , Persona de Mediana Edad , Variaciones Dependientes del Observador , Valor Predictivo de las PruebasRESUMEN
Anal cancer is a rare disease. Nevertheless, it may be a reason for concern among groups in which its incidence is increasing: those who engage in anoreceptive intercourse, promiscuous persons, and those with sexually transmitted infections (HPV and HIV). The aim of this study was to evaluate the prevalence of abnormal anal cytology in women infected with HIV seen at Hospital de Clínicas de Porto Alegre, Brazil. A cross-sectional design was used. Anal smear screening was offered to all women infected with HIV seen at the hospital's outpatient sexually transmitted infections clinic from March 2006 to March 2008. A total of 184 patients were thus enrolled. Only patients who gave written consent were included in the study. The prevalence of abnormal anal cytology was 14.1% (26 patients). Twenty-two patients presented atypical squamous cells of undetermined significance, and four exhibited low-grade intraepithelial neoplasia. Initially, abnormal anal cytology was significantly associated with age, number of pregnancies, smoking, abnormal cervical cytology, CD4⺠< 200 cells/mm³ and hepatitis C co-infection. After adjustment, only CD4⺠< 200 cells/mm³ and smoking were found to increase the risk of altered anal cytology. The anal Pap method described is simple and can be used for screening in cohorts of HIV-positive women who are at risk of developing anal carcinoma, mainly those with CD4⺠counts <200 cells/mm³ and smokers.