Diagnostic markers of insulin resistance to discriminate between prediabetes and diabetes in menopausal women.

OBJECTIVE: Menopause is an important transition period in a woman's reproductive life during which hormonal changes occur, resulting in an increased risk of cardiovascular disease and type 2 diabetes. In this study, we assessed the possibility of using surrogate measures of insulin resistance (IR) to predict the risk of insulin resistance in perimenopausal women. PATIENTS AND METHODS: The study involved 252 perimenopausal women living in the West Pomeranian Voivodeship. The methods employed in this study were diagnostic survey based on the original questionnaire, anthropometric measurement, and laboratory tests performed to determine the levels of selected biochemical parameters. RESULTS: In the entire study population, the highest area under the curve was found for the homeostasis model assessment-insulin resistance (HOMA-IR) and quantitative insulin sensitivity check index (QUICKI). Triglyceride-glucose index (TyG index) showed a higher diagnostic value as a distinction tool between prediabetes and diabetes in perimenopausal women than the other markers. HOMA-IR significantly positively correlated with fasting blood glucose (r = 0.72; p = 0.001), glycated hemoglobin (HbA1C, r = 0.74; p = 0.001), triglycerides (TG, r = 0.18; p < 0.005), and systolic blood pressure (SBP, r = 0.15; p= 0.021), and negatively with high-density lipoprotein (HDL, r = -0.28; p = 0.001). QUICKI negatively correlated with fasting blood (r = -0.051; p = 0.001), HbA1C (r = -0.51; p = 0.001), TG (r = -0.25; p = 0.001), low-density lipoprotein (LDL, r = -0.13; p= 0.045), and SBP (r = -0.16; p = 0.011), and positively with HDL (r = 0.39; p = 0.001). CONCLUSIONS: Anthropometric and cardiometabolic parameters were found to significantly correlate with IR markers. HOMA-beta, the McAuley index (McA), visceral adiposity index (VAI), and lipid accumulation product (LAP) may be useful as predictors of pre-diabetes and diabetes in postmenopausal women.

Elevated serum fluoride levels in perimenopausal women are related to the components of metabolic syndrome.

OBJECTIVE: Increased fluoride levels can lead to numerous complications, including skeletal effects, cardiotoxicity, endocrine dysfunction, neurotoxicity, hepatotoxicity and nephrotoxicity. The aim of this study was to analyze the relationship between serum fluoride levels and MetS or its individual components, and to assess the diagnostic usefulness of fluoride as a factor contributing to MetS. PATIENTS AND METHODS: The study included a group of 475 women (mean age of 52.9 years), living in the West Pomeranian Voivodeship in Poland. The study involved data collection and biochemical analysis. RESULTS: Analysis of the relationship between the levels of fluoride and the presence of MetS or its components showed that the mean fluoride level was statistically significantly higher in patients with hypertriglyceridemia (dCohen = 0.39; 95% CI; confidence limits: 0.13, 0.63) and hypertension (dCohen = 0.25; 95% CI; confidence limits: 0.07, 0.44). Moreover, the mean fluoride level was significantly higher in women who met the diagnostic criteria for MetS than in the remaining subjects (dCohen = 0.40; 95% CI; confidence limits: 0.17, 0.64). CONCLUSIONS: Elevated serum fluoride levels may be associated with an increased incidence of MetS among perimenopasal women, although its diagnostic value as a marker of MetS is limited.

The effect of tryptophan and serotonin levels on the severity of depressive and climacteric symptoms in perimenopausal women.

OBJECTIVE: The dysfunctional serotonergic system is a factor contributing to the development of depression. The aim of this study was to assess the effect of serotonin and tryptophan on the severity of climacteric and depressive symptoms in perimenopausal women. PATIENTS AND METHODS: The study involved data collection and biochemical analysis. The research instruments were: the Blatt-Kuppermann index, the Beck Depression Inventory, and the proprietary questionnaire. RESULTS: There was no significant effect of tryptophan (r=0.05; p=0.219) and serotonin (r= -0.03; p=0.537) on the severity of depressive symptoms, or tryptophan on the severity of climacteric symptoms (r=0.019; p=0.657). However, a weak negative correlation was found between the level of serotonin and the severity of climacteric symptoms (r=-0.09; p=0.022). Additionally, it was found that severe depressive symptoms were associated with a significant exacerbation of climacteric symptoms (ß=0.379; p<0.001), while higher serotonin levels alleviated them (ß=-0.604; p=0.005). CONCLUSIONS: Higher severity of depressive symptoms may exacerbate climacteric symptoms. Serotonin levels may influence the severity of climacteric symptoms. Moreover, the higher the serotonin level, the lower the odds of depressive disorders, irrespective of the severity of climacteric symptoms. Tryptophan levels had no effect on the severity of depressive and climacteric symptoms in the perimenopausal women.

Can personality traits affect the quality of life of women with the BRCA1/BRCA2 mutations before and after prophylactic adnexectomy?

OBJECTIVE: Ovarian, fallopian tube, and peritoneal carcinomas are the most common hereditary gynecological cancers associated with the BRCA1 and BRCA2 mutations. It is recommended to radicalize management, using RRSO. Personality traits are regarded as significant contributors to human QoL and adaptability to the changed conditions of functioning. The aim of this study was to demonstrate the effect of personality on the QoL of women with the BRCA1 and BRCA2 mutations before and after RRSO. PATIENTS AND METHODS: The study involved 62 patients with the BRCA1 and BRCA2 mutations referred to hospital for RRSO. The research instruments were the WHQ, NEO-FFI, and self-developed sociodemographic data collection tool. RESULTS: Highly neurotic patients with the BRCA1 and BRCA2 mutations had lower QoL, especially in the domains of depressed mood, anxiety/fears, and sleep problems. At the same time, higher levels of conscientiousness, openness to experience, extroversion, and agreeableness were associated with better QoL outcomes. CONCLUSIONS: (1) Personality traits can contribute to the QoL of women with the BRCA1 and BRCA2 mutations before and after RRSO. (2) Identification of personality traits may be an important prognostic factor indicating potential changes in the QoL of patients after RRSO.

Non-spherical particles for optical trap assisted nanopatterning.

Optical trap assisted nanopatterning is a laser direct-write technique that uses an optically trapped microsphere as a near-field objective. The type of feature that one can create with this technique depends on several factors, one of which is the shape of the microbead. In this paper, we examine how the geometry of the bead affects the focus of the light through a combination of experiments and simulations. We realize nanopatterning using non-spherical dielectric particles to shape the light-material interaction. We model the resulting nanoscale features with a finite difference time domain simulation and obtain very good agreement with the experiments. This work opens the way to systematic engineering of the microparticle geometry in order to tailor the near-field focus to specific nanopatterning applications.

Cyclin D1 protein and CCND1 gene expression in colorectal cancer.

AIMS: To report the expression of cyclin D1 protein and its gene in a series of colorectal adenocarcinoma. METHODS: One hundred and eleven specimens of colorectal carcinomas and adjacent normal colorectal mucosa were investigated by staining with a monoclonal antibody against cyclin D1 and by RT-PCR. RESULTS: Expression of CCND1 gene was found in 54 out of 111 cases of colorectal cancers, while in normal mucosa the expression of this gene was not observed. Cyclin D1 protein expression was checked in the same group of adenocarcinoma cases. Presence of this protein was observed in 69 cases and for 43 of them also expression of its gene was found. Dependence between the presence of protein and the gene expression was statistically significant (p=0.0002). In the group of cases where CCND1 gene expression was detected, high level of its protein expression was found in 20 cases. The CCND1 gene expression was associated with metastases to lymph nodes (p=0.0181) and also with distant metastasis (p=0.0204). CONCLUSIONS: The combined measurement of both the gene and its protein product, is an important contribution to the study of molecular markers in histological material.

Expression of p65 gene in experimental colon cancer under the influence of 5-fluorouracil given alone and in combination with hormonal modulation.

The effect of tamoxifen (TAM), lanreotide (LAN) and 5-fluorouracil (5-FU), given separately or together, on p65 gene expression in murine Colon 38 cancer was investigated by RT-PCR method. The findings were compared with cell proliferation determined by bromodeoxyuridine (BrdU) labeling index, apoptosis visualized by TUNEL method and tumor mass. It was found that in the control group (mice bearing colon cancer without treatment) the expression of p65 gene was present in 57% of investigated samples. In the groups treated with TAM or LAN p65 gene expression was detected in 87.5% and 83.3% of analyzed cases, respectively. Both these substances increased apoptotic index in Colon 38 cancer and LAN also decreased the proliferation index. After a combined treatment with TAM and LAN a percentage of p65 positive cases was similar to that of the control group and equaled approximately 60%. This treatment did not increase proapoptotic effects of these drugs, and even reduced the antiproliferogenic effect of LAN. In the group treated with 5-FU and LAN p65 gene expression was also close to the control value (about 66%). Similarly in this group the combined treatment with these two drugs did not cause any favorable effect on proliferation and apoptosis. Moreover, in this group even reduced antiproliferogenic effect of LAN was observed. In the group with 5-FU alone the expression of p65 was present in about 80% of samples. The treatment with 5-FU increased apoptotic index and did not change proliferation. In the group treated with a combination of TAM and 5-FU all analyzed cases showed the presence of p65 gene expression. Previously, we observed in this group the most pronounced and synergistic effect of these substances on the inhibition of cell proliferation and tumor mass reduction. Based on these findings we conclude that p65 gene expression in murine Colon 38 cancer tissues can be modulated via chemotherapy (5-FU) and also via hormonal modulation (TAM and LAN).

Changes in the phagocytic cells in children treated with continuous ambulatory peritoneal dialysis.

Children on continuous ambulatory peritoneal dialysis (CAPD) in endstage renal failure are highly exposed to peritonitis. Peritoneal macrophages (PM) and blood neutrophils (PMNC) are the first line of defense against invading microbes. This study was undertaken for assessing surface receptors expression on PM and PMNC and to check their ability to phagocytosis and killing of bacteria. We have found that in spite of the decreased number of PM in dialysate fluid their viability and activity significantly increased during CAPD. Moreover, higher number of PM expressed CD16 and CD35 antigens (FcRIII and C3bR, respectively) in comparison with the results observed at CAPD onset. The number of PMNC expressed of these two antigens in uremic children blood were significantly lower in comparison with healthy control. The number of CD16 positive cells increased under influence of CAPD only temporarily. CAPD caused improvement of phagocytosis and intracellular killing of bacteria by PM but not by PMNC. There is discussed here influence of uremia and CAPD on surface antigens, function of phagocytes as well as renewal of PM during CAPD.