Do nutritional behaviors depend on biological sex and cultural gender?

Conventional knowledge, resulting from observations and experience, maintains the conviction that there are gender differences in the acquisition, preparation and consumption of food. This review shows differences between the sexes in eating behavior, food choice and nutritional strategy which were conditioned by evolution and by intra-individual (biological or psychological) and extra-individual (socioeconomic and cultural) factors. Women manifest a more pronounced trust in healthy nutrition, greater engagement in controlling body weight, a higher tendency to eat in a group and in stressful situations, and they frequently experience frustration due to their own nutritional behaviors, which reflects higher social pressure and their attempts to reduce eating-related pleasure. On the other hand, men prefer fatty meals with a strong taste, and are directed mainly by the pleasure of consumption; they more frequently furtively eat sweet foods while watching television, use more dietary supplements and more frequently visit fast food restaurants. Nutritional behavior, styles of nutrition, dietary profiles, approach to nourishment, approach to the place of meal consumption, and the sources of nutritional knowledge all demonstrate associations with gender. Reciprocal interactions between gender and diet are conditioned by physiological, psychological and sociocultural factors. This system of reciprocal interactions includes feedback: biological sex and cultural gender shape one's diet and, reciprocally, one's diet affects the deepening or flattening of gender differences. The analysis of reciprocally interacting factors entangled in the formation of a nutritional model may also represent an important element of pro-health prophylaxis and should be used in medical and dietary practice. Males in particular should be informed and educated about health-promoting diets.

The influence of a 3-week body mass reduction program on the metabolic parameters and free amino acid profiles in adult Polish people with obesity.

BACKGROUND: Previous studies have showed differences in the amino acid (AA) composition in the plasma of people with obesity when compared to lean individuals, but the perturbations of AA concentrations in obesity and the dynamics of AA changes after weight loss is not fully understood. OBJECTIVES: The objective of the study was to evaluate the effect of a short-term weight reduction program on the metabolic status and plasma AA levels in individuals with obesity. MATERIAL AND METHODS: A total of 24 adult Polish patients with a BMI between 34 and 49 kg/m2 were enrolled in a 3-week controlled body mass reduction program based on everyday physical activity and a hypocaloric diet (25-30% less than total daily energy requirements). At baseline and after the program, anthropometric measurements, biochemical parameters and free AA profiles were determined. RESULTS: After the weight loss program, significant changes in body mass and metabolic parameters (e.g., low-density lipoprotein, triglyceride, fasting glucose, and insulin levels) were observed. Positive changes in a homeostatic model assessment of insulin resistance (HOMA-IR) and quantitative insulin sensitivity check index (QUICKI) following the program were also found. The levels of 10 AAs (α-amino-n-butyric acid, alanine, citrulline, glutamine, glycine, hydroxyproline, isoleucine, proline, sarcosine, and threonine) had significantly increased following weight loss. Only aspartic acid was present at a significantly lower concentration after the program. CONCLUSIONS: Using a 3-week controlled body mass reduction program based on physical activity and a hypocaloric diet, we were able to demonstrate significant changes in biochemical parameters and free AA profiles. To better understand these changes, future studies should involve a long-term program with more patients.

The effect of orlistat versus metformin on body composition and insulin resistance in obese premenopausal women: 3-month randomized prospective open-label study.

INTRODUCTION: Our aim was to evaluate the effects of metformin and orlistat on body composition and glucose-insulin homeostasis in obese premenopausal women. MATERIAL AND METHODS: Seventy-three obese premenopausal Caucasian women aged 32.4 ±8.3 years were treated with either metformin (1000 mg/day; n = 37) or orlistat (360 mg/day; n = 36). Anthropometric parameters were measured using dual-energy X-ray absorptiometry. Glucose tolerance, using the oral glucose tolerance test; insulin resistance, using the homeostasis model assessment (HOMA-IR); and insulin sensitivity, using the Matsuda insulin sensitivity index (ISI Matsuda), were assessed at the commencement of the study and after 3 months. RESULTS: Those treated with orlistat showed greater weight loss (-9.4 ±2.3 vs. -4.9 ±1.3 kg, p < 0.05) and decrease of fat mass (-5.4 ±3.0 vs. -3.5 ±0.7 kg, p < 0.05) than those treated with metformin. The percentage of android and gynoid fat deposits was reduced in both groups; however, a greater decrease in android fat was observed in those treated with metformin. Improvement in ISI Matsuda and post-load insulin were similar in both groups. High initial post-load insulin and low ISI Matsuda corresponded with reductions in total fat, trunk fat, and waist circumference in both groups, and a decrease in android fat in those treated with metformin. CONCLUSIONS: Orlistat treatment resulted in greater weight loss and improvement in body composition; metformin treatment resulted in a reduction of android fat. Both drugs produced a comparable improvement in insulin/glucose homeostasis. Overall, insulin-resistant women showed improvement with treatment, irrespective of which drug was used.

Diagnostic pitfalls of adrenal incidentaloma.

Adrenal incidentaloma (AI) includes all lesions with diameter ≥ 1 cm found incidentally during imaging examinations not associated with suspected adrenal pathology. Every adrenal incidentaloma requires a detailed hormonal and imaging assessment. Initial diagnosis includes radiological phenotypical evaluation (particularly in CT, or in case of contraindications - in MRI) and biochemical assessment of tumour hormonal activity (which includes cortisol circadian rhythm, salivary cortisol concentration, 24-hour urinary free-cortisol and metanephrines test, short cortisol and dexamethasone suppression test, ACTH level assessment, aldosterone and ARO concentration, adrenal androgen concentration). Each diagnostic step is associated with limitations and method imperfections. The influence of administered medications, age and concomitant diseases must be taken into account when interpreting test results. It is important to remember abovementioned factors may cause false positive or false negative test results. The following paper is to summarize the etiology of the most common diagnostic mishaps which frequently lead to misdiagnoses, an increase in patient's anxiety and, as a consequence, in the introduction of improper therapy or its discontinuation. The awareness of biochemical and imaging test limitations, and the knowledge of false positive and false negative result sources, allows for the optimisation of the diagnostic process. Simultaneously, the analyzed factors may contribute to a decrease in unnecessary and frequently repeated tests. Additionally, it may imply avoiding the costs of unjustified deep diagnostics.

Preoperative factors predicting saphenous vein graft occlusion in coronary artery bypass grafting: a multivariate analysis.

Saphenous vein segments are frequently used as aortocoronary bypass grafts, particularly in patients over 65 years of age. In the majority of patients, venous grafts maintain their patency for 5-6 years; however, some become occluded within 12 months after surgery. There are some defined predictive biological factors used to assess saphenous vein graft long-term patency rates, but little is known about molecular parameters for estimating the risk of early vein occlusion. The pathogenesis of this process involves the proliferation of stem cells, as well as progenitor cells, in the graft wall. Histologically, this is reflected by CD34 and CD133 expression in endothelial and smooth muscle cells. Thus, the aim of present work was to perform a multivariate analysis of stem cell and progenitor cell markers in saphenous vein graft walls before transplantation to arterial circulation and correlate these results with early graft occlusion. A total of 718 patients, who underwent coronary artery bypass grafting using a saphenous vein graft, were enrolled in this prospective study. CD34, CD133 and von Willebrand factor expression was evaluated via immunohistochemistry. A multivariate analysis revealed that strong CD133 expression in smooth muscle cells can be considered a risk factor for early graft failure. Our findings suggest that CD133 expression in smooth muscle cells of the tunica media in saphenous vein grafts obtained from coronary artery bypass graft patients before graft transplantation to coronary circulation might predict the possibility of early graft occlusion.

Effects of green tea supplementation on inflammation markers, antioxidant status and blood pressure in NaCl-induced hypertensive rat model.

Background: Recent studies indicate the important role of chronic inflammation and oxidative stress in the pathogenesis of hypertension. Green tea, due to the high content of catechins, shows high antioxidant activity. Objective: To determine the effect of supplementation with green tea extract on the blood pressure, on the concentration of selected parameters of inflammation and antioxidant status in the model of high-sodium-diet induced hypertension. Design: The study lasted 42 days. The experimental population consisted of 30 rats. The rats were divided into three groups. The rats in the control group were fed a standard diet with 35 g of NaCl per kg of diet, in the second group hypertensive rats were fed a standard diet with NaCl (35 g/kg diet) and with an extract of green tea (2 g/kg diet). The third group consisted of hypertensive rats fed a standard diet with NaCl (35 g/kg diet), and 4 g of green tea extract/kg diet. Results: Supplementation with green tea had no effect on body mass of rats on a high-sodium diet. At the end of the experiment systolic blood pressures in SH2 and SH4 groups were significantly lower than in the control group SK. The SH4 group was characterized by a significantly lower diastolic blood pressure value and concentration of TNF-α in comparison to the SK group. The rats from both SH2 and SH4 groups were characterized by higher total antioxidant status values compared to the control group. Discussion: The mechanism of the beneficial effects of green tea on blood pressure is not clear, but it is believed that it is related to its omnidirectional properties. Conclusions: Supplementation of green tea has a beneficial effect on blood pressure, markers of inflammation and antioxidant status in an experimental model of hypertension.

Oral Health Status of Patients with Lysosomal Storage Diseases in Poland.

Patients with lysosomal storage diseases (LSDs) suffer from physical and mental disabilities, which together with poor access to professional care may lead to impaired oral health. This cross-sectional case-control study characterized the status of oral health in patients with LSDs in Poland. Thirty-six children and young adults with various forms of LSDs were examined. The data were compared with those from age- and sex-matched healthy controls. Exemplary cases were presented to highlight typical problems in oral care associated with LSDs. When possible, saliva was collected and analyzed for total protein, inflammatory mediators, and antioxidant status. Generally, patients with LSDs had significantly higher prevalence of caries, inferior gingival status, and inadequate oral hygiene. The severity of oral health impairment in mucopolysaccaridoses, the most common LSD in Poland, was similar to that seen in patients with mannosidoses or Pompe disease. Saliva could be collected only from few less handicapped patients. In MPS, it did not appear to differ significantly from the controls, but in patients with Pompe disease it contained lower concentrations of vascular endothelial growth factor (VEGF) and monocyte chemoattractant protein-1 (MCP-1), but higher levels of tumor necrosis factor receptors 1 and 2 (TNF-R1, TNF-R2) and myeloperoxidase (MPO). In conclusion, Polish patients with LSDs have an inadequate level of oral hygiene and substantially deteriorated oral health.

C-reactive protein as a diagnostic and prognostic factor in inflammatory bowel diseases.

AIM: The study aimed to evaluate high-sensitivity CRP (hsCRP) as a diagnostic and predictive marker in patients with inflammatory bowel disease (IBD). MATERIAL/METHODS: Medical history of 106 patients with IBD revealed hsCRP concentrations at diagnosis and during the follow-up period. RESULTS: The study showed that the majority of investigated patients had elevated hsCRP concentrations at diagnosis, although the mean concentration was much higher in the group of patients with Crohn's disease (CD) than the group with ulcerative colitis (UC) (P<0.001). The overall decrease in mean hsCRP concentration observed during the follow-up period was larger in the group of CD patients. The analysis showed a correlation between hsCRP concentrations at diagnosis and risk of surgery in the group of CD patients (r=0.408, P=0.002), but not in the group of UC patients. In a logistic regression analysis, surgery in CD patients was associated with age (OR: 0.89, 95% CI: 0.8-1.0, P=0.05) and hsCRP concentration (OR: 1.02, 95% CI: 1.0-1.04, P=0.03) at diagnosis. DISCUSSION: HsCRP might be a useful diagnostic marker in differentiating active IBD from other diseases. Particularly important however seems to be the predictive value of hsCRP at diagnosis in prognosing the clinical outcome of the disease in CD patients.