Search results for "REGULATION"
showing 10 items of 4463 documents
p53 is correlated with low BMI negative progesterone receptor status and recurring disease in patients with endometrial cancer
2011
Abstract Objective P53 tumor suppressor gene plays a role in endometrial carcinogenesis. Former studies described correlations between p53 protein overexpression in endometrial cancer and prognostic factors, measured by immunohistochemistry. But data is still controversial. The aim of this study was to measure p53 and phospho-p53 overexpression by Western blot and evaluate correlations between overexpression and prognostic and clinical factors. Phospho-p53 seems to be the functional p53 protein and was examined for the first time in endometrial cancer. Methods 40 patients with endometrial cancer were included in the study. A control group of 20 patients with normal endometrial tissue sample…
Expression Levels and Clinical-Pathological Correlations of HER2/neu in Primary and Metastatic Human Breast Cancer
2005
In this retrospective study we assessed the expression of the HER2/neu oncogene product in a series of 574 consecutive breast cancer cases, all recruited at the Maurizio Ascoli Cancer Center of Civico Hospital, in Palermo, between January 1998 and June 2003. The HER2/neu expression was evaluated using immunohistochemistry and scored from 0 to +3 as per FDA recommendations. The HER2/neu expression levels were related to the clinical-pathological features of the disease, including tumor size, nodal and menopausal status, estrogen and progesterone receptors, and hormonal or chemotherapeutic treatment. In 108 patients with a follow-up period of 3 years or more, the HER2/neu expression was also …
Concentrations of inhibins and activin in women undergoing stimulation with recombinant follicle-stimulating hormone for in vitro fertilization treat…
2001
To investigate the influence of human recombinant follicle-stimulating hormone (FSH) on circulating serum concentrations of the ovarian proteohormones inhibin A, inhibin B, pro alpha-C, and activin A and serum levels of estradiol after down-regulation with GnRH analogue.Serum concentrations of ovarian proteohormones and estradiol.Academic clinical practice.30 women who underwent assisted reproductive techniques.Blood samples were analyzed for inhibin A, inhibin B, pro alpha-C, activin A, and estradiol during IVF treatment at points coinciding with pituitary down-regulation, stimulation with recombinant FSH, ovulatory triggering, and the luteal phase of the cycle.Activin A levels did not cha…
Induction of bone morphogenetic protein-6 in skin wounds. Delayed reepitheliazation and scar formation in BMP-6 overexpressing transgenic mice.
1998
Growth factors of the transforming growth factor-beta superfamily are involved in cutaneous wound healing. In this study we analyze the expression of the bone morphogenetic protein-6 (BMP-6) gene, a transforming growth factor-beta related gene, in skin wounds. In normal mouse skin high levels of BMP-6 mRNA and protein are expressed by postmitotic keratinocytes of stratified epidermis until day 6 after birth. BMP-6 expression is strongly reduced in adult epidermis with diminished mitotic activity. After skin injury we found large induction of BMP-6-specific RNA and protein in keratinocytes at the wound edge and keratinocytes of the newly formed epithelium as well as in fibroblast shaped cell…
Transglutaminase Type II Plays a Protective Role in Hepatic Injury
2003
The up-regulation of "tissue" transglutaminase (TG2) gene has been shown to occur in various pathologies and can lead to severe liver injury; however, its role in the onset of liver damage has not yet been clarified. To address this issue, we have used two experimental settings: carbon tetrachloride (CCl(4))-induced liver injury in wild-type and TG2 knockout mice; and liver biopsies obtained from a large cohort of hepatitis C virus (HCV)-infected patients. Mice lacking TG2 failed to clear the hepatic necrotic tissue formed in response to prolonged CCl(4) exposure (5 weeks) and 60% of them died before the end of the treatment. By contrast, wild-type mice were able to recover after the toxic …
High progesterone levels in women with high ovarian response do not affect clinical outcomes: a retrospective cohort study
2014
Background The potentially detrimental role of progesterone during the follicular phase has been a matter of controversy for several years; however, few studies have analyzed the effects of combined raised estradiol and progesterone levels on pregnancy outcomes. The aim of the present study was to determine the influence of high progesterone levels on clinical outcomes in the context of high ovarian response. Methods We performed a retrospective cohort study that included 2850 women classified as high responders. The women were subdivided into six groups depending on their progesterone concentration on the day of human chorionic gonadotropin (hCG) administration: 1.81 ng/ml (>p90). Ovarian …
Hepatogenic differentiation of human mesenchymal stem cells from adipose tissue in comparison with bone marrow mesenchymal stem cells
2006
AIM: To investigate and compare the hepatogenic transdifferentiation of adipose tissue-derived stem cells (ADSC) and bone marrow-derived mesenchymal stem cells (BMSC) in vitro. Transdifferentiation of BMSC into hepatic cells in vivo has been described. Adipose tissue represents an accessible source of ADSC, with similar characteristics to BMSC. METHODS: BMSCs were obtained from patients undergoing total hip arthroplasty and ADSC from human adipose tissue obtained from lipectomy. Cells were grown in medium containing 15% human serum. Cultures were serum deprived for 2 d before cultivating under similar pro-hepatogenic conditions to those of liver development using a 2-step protocol with sequ…
Gluten affects epithelial differentiation-associated genes in small intestinal mucosa of coeliac patients
2007
Summary In coeliac disease gluten induces an immunological reaction in genetically susceptible patients, and influences on epithelial cell proliferation and differentiation in the small-bowel mucosa. Our aim was to find novel genes which operate similarly in epithelial proliferation and differentiation in an epithelial cell differentiation model and in coeliac disease patient small-bowel mucosal biopsy samples. The combination of cDNA microarray data originating from a three-dimensional T84 epithelial cell differentiation model and small-bowel mucosal biopsy samples from untreated and treated coeliac disease patients and healthy controls resulted in 30 genes whose mRNA expression was simila…
Types of Adult Attention-Deficit/Hyperactivity Disorder: A Replication Analysis.
2019
OBJECTIVE Research supports the importance of emotional symptoms in adults with attention-deficit/hyperactivity disorder (ADHD), which are not reflected in the DSM-5 or ICD-10 criteria. The Wender-Reimherr Adult Attention Deficit Disorder Scale (WRAADDS) assesses these symptoms, plus inattention, hyperactivity, and impulsivity. This scale allowed us to divide adult ADHD into 2 subtypes in a 2015 publication: ADHD inattentive presentation and ADHD emotional dysregulation presentation. The present study refines this observation using a larger, more diverse sample. METHODS Eight double-blind adult ADHD clinical trials (encompassing 1,490 subjects) were selected because they included assessment…
NO Reduces PMN Adhesion to Human Vascular Endothelial Cells Due to Downregulation of ICAM-1 mRNA and Surface Expression
2000
Reperfusion damage is largely due to the adherence of polymorphonuclear leukocytes to the endothelium initiated by adhesion molecule upregulation. The reduced endothelial nitric oxide release during ischemia may be involved in the upregulation of intercellular adhesion molecule 1. In this study, we tested if nitric oxide donors suppress polymorphonuclear leukocyte adherence to activated endothelial cells by inhibition of the intercellular adhesion molecule 1 surface expression. Confluent human umbilical vein endothelial cells were stimulated with tumor necrosis factor alpha (300 U/mL) after preincubation with increasing concentrations of the nitric oxide donors CAS 1609 (0.005-5 mM/L) and 3…