Publications by authors named "Piwowar M"

The purpose was to answer what is the relationship between torques acting on the human body, how does the triceps calf muscle balance the weight of a tilted body and what is the foot's role in the titling body? Two research models were developed. Model 1 - the one-sided lever system consists of a flat bar with, an axis of rotation, used to determine the weight and torque at a given point on it. Model 2 - the two-sided lever system consists of a flat bar imitating a tilted body counteracted by the Achilles tendon, and a platform imitating a foot.

View Article and Find Full Text PDF

The paper deals with the torques of external muscles acting on the upper ankle joint under weight-bearing conditions and their importance in diagnosing and treating the human foot. Experimental data were collected and calculations were performed. Based on the experiments with the biomechanical model of the foot and upper ankle joint, it was shown how the changes in the force arms of the external muscles of the foot under weight-bearing conditions, change the torque.

View Article and Find Full Text PDF

Background: Hyperandrogenism is among the most common endocrine disorders in women. Clinically, it manifests as hirsutism, acne, and alopecia. A healthy lifestyle, including nutritious dietary patterns and physical activity, may influence the clinical manifestation of the disease.

View Article and Find Full Text PDF

Despite the development of modern drugs, drug resistance in oncology remains the main factor limiting the curability of patients. This paper shows the use of a group of hydrophobic statins to inhibit drug resistance (Pgp protein). In a chemoresistance melanoma cell model, viability, necroptosis with DNA damage, the absorption of the applied pharmaceuticals, and the functional activity of the ABCB1 drug transporter after administration of docetaxel or docetaxel with a selected hydrophobic statin were studied.

View Article and Find Full Text PDF

The subject of the paper is a review of multidimensional data analysis methods, which is the canonical analysis with its various variants and its use in omics data research. The dynamic development of high-throughput methods, and with them the availability of large and constantly growing data resources, forces the development of new analytical approaches that allow the review of the analyzed processes, taking into account data from various levels of the organization of living organisms. The multidimensional perspective allows for the assessment of the analyzed phenomenon in a more realistic way, as it generally takes into account much more data (including OMICs data).

View Article and Find Full Text PDF

Background: The aim of this study was to investigate the role of urine-derived extracellular vesicles (uEVs) in diabetic kidney disease (DKD) in patients diagnosed with type 2 diabetes mellitus (T2DM).

Methods: UEVs were characterized by size distribution and microRNA content by next-generation small RNA sequencing and quantitative reverse transcription PCR.

Results: A subset of sixteen miRNAs enriched in T2DM patients with DKD, including hsa-miR-514a-5p, hsa-miR‑451a, hsa-miR-126-3p, hsa-miR-214, or hsa-miR‑503 was identified.

View Article and Find Full Text PDF

Purpose: The aim of this paper was the application of a new dynamic-passive method of treatment in correction of hallux valgus and coexisting static deformities of the foot (transverse-plane and plano-valgus foot).

Methods: The study involved 50 patients; 26 with full big toe correction after the passive correction grip (group I) and 24 with big toe correction requiring additional passive abduction (group II). The patients regularly performed exercises using the designed device according to the planned schedule.

View Article and Find Full Text PDF

(1) Background: Static foot deformities, including hallux valgus, are common deformities. The subject under consideration is the role of extrinsic and intrinsic muscles working within muscular systems that shape the arches of the foot and the alignment of the toes. (2) Methods: Based on a literature review, the muscle systems were analyzed.

View Article and Find Full Text PDF

The presented paper describes a new isolation method of recovery and analysis of selected drugs developed for preclinical research. The method uses the RP-HPLC technique (in a single chromatographic separation) and serves the recovery and analysis of selected drugs from neoplastic cells. It enables the determination of cytostatics statins, fibrates, and pioglitazone.

View Article and Find Full Text PDF

(1) Background. This paper presents a case of hip joints that were initially described as either normal or physiologically immature in four successive ultrasound examinations using the static method by Graf; however, the final treatment of the patient involved multiple hip reconstruction surgeries. (2) Case presentation.

View Article and Find Full Text PDF

The type of diet not only affects the composition of the oral microflora but is also one of the more critical factors associated with an increased risk of Parkinson's disease, PD. This study compared diet preferences and oral microbiota profiles in patients with PD vs. healthy controls.

View Article and Find Full Text PDF

Elucidating the mechanisms of bacterial translocation is crucial for the prevention and treatment of neonatal sepsis. In the present study, we aimed to evaluate the potential of lactoferrin to inhibit the development of late-onset blood infection in neonates. Our investigation evaluates the role of key stress factors leading to the translocation of intestinal bacteria into the bloodstream and, consequently, the development of life-threatening sepsis.

View Article and Find Full Text PDF

This study aimed to investigate the association between selected variants of genes related to dopamine metabolism pathways and the risk of and progression of Parkinson's disease (PD). This prospective cohort study was conducted in one academic teaching hospital. The study was conducted on 126 patients diagnosed with idiopathic Parkinson's disease.

View Article and Find Full Text PDF

(1) Background: The purpose of this study was to observe segmental phase angle (PhA) and body composition fluctuation of elite ski jumpers. (2) Methods: In the study, 12 professional ski jumpers took part. Body composition was estimated with segmental multi-frequency bioelectrical impedance analysis.

View Article and Find Full Text PDF

The distribution of nucleotides spacing in human genome was investigated. An analysis of the frequency of occurrence in the human genome of different sequence lengths flanked by one type of nucleotide was carried out showing that the distribution has no self-similar (fractal) structure. The results nevertheless revealed several characteristic features: (i) the distribution for short-range spacing is quite similar to the purely stochastic sequences; (ii) the distribution for long-range spacing essentially deviates from the random sequence distribution, showing strong long-range correlations; (iii) the differences between (A, T) and (C, G) nucleotides are quite significant; (iv) the spacing distribution displays tiny oscillations.

View Article and Find Full Text PDF

Background: Hypersexual disorder (HD) is a condition in which the individual experiences loss of control over engagement in sexual behaviors, leading to negative effects on various areas of life. Paraphilias often present concomitantly with HD, and although cognitive behavioral therapy (CBT) has been proven to reduce engagement in hypersexual behavior, no studies have investigated the effects of Internet-administered CBT (ICBT) on HD, with or without paraphilia(s) or paraphilic disorder(s).

Aim: To investigate the effects of Internet-administered CBT on HD, with or without paraphilia(s) or paraphilic disorder(s).

View Article and Find Full Text PDF

A huge amount of atomized biological data collected in various databases and the need for a description of their relation by theoretical methods causes the development of data integration methods. The omics data analysis by integration of biological knowledge with mathematical procedures implemented in the OmicsON R library is presented in the paper. OmicsON is a tool for the integration of two sets of data: transcriptomics and metabolomics.

View Article and Find Full Text PDF

Aim Of The Study: One of the critical steps in molecular oncology diagnostics is obtaining high quality genomic DNA. Therefore, it is important to evaluate and compare the techniques used to extract DNA from tissue samples. Since formalin-fixed, paraffin-embedded (FFPE) tissues are routinely used for both retrospective and prospective studies, we compared three commercially available methods of nucleic acid extraction in terms of quantity and quality of isolated DNA.

View Article and Find Full Text PDF

Objectives: Exosomes - microvesicles which are secreted by living cells - can be produced from different cell types and detected in various body fluids. They are the carriers of intercellular information which regulate tumor microenvironment and are considered to be involved in tumor progression and metastasis. Cancer cells can secrete more exosomes than healthy cells, and are expected to be potential tools for tumor diagnosis and treatment.

View Article and Find Full Text PDF

Analysis of large data sets is currently a major challenge. Strong efforts are being undertaken to tackle this problem by developing new methods or modifying existing ones. The Z association method is a new method for describing directional association in contingency tables.

View Article and Find Full Text PDF

Rationale: X-linked adrenoleukodystrophy (X-ALD) is a rare disorder caused by mutations in the ABCD1 gene, coding for peroxisomal membrane transporter adrenoleukodystrophy (ALD) protein. The disease is characterized by accumulation of very long chain fatty acids (VLCFAs) in tissues. Adult adrenomyeloneuropathy (AMN) and the cerebral inflammatory form of ALD are the main phenotypes presenting various symptoms.

View Article and Find Full Text PDF

Background/aim: Most melanomas develop in hypoxic conditions. Since hypoxia via HIF-1 induces glycolysis, a process essential for malignant melanoma growth/survival, the goal of this study was to analyze the influence of hypoxia on the expression of HIF-1 target genes involved in glucose metabolism.

Materials And Methods: The response of melanoma cell lines to hypoxic conditions was analyzed by RT-PCR and western blotting.

View Article and Find Full Text PDF

The paper presents the application of Grade Correspondence Analysis (GCA) and Grade Correspondence Cluster Analysis (GCCA) for ordering and grouping -omics datasets, using transcriptomic data as an example. Based on gene expression data describing 256 patients with Multiple Myeloma it was shown that the GCA method could be used to find regularities in the analyzed collections and to create characteristic gene expression profiles for individual groups of patients. GCA iteratively permutes rows and columns to maximize the tau-Kendall or rho-Spearman coefficients, which makes it possible to arrange rows and columns in such a way that the most similar ones remain in each other's neighbourhood.

View Article and Find Full Text PDF

The association of FokI (rs2228570), a polymorphism of the vitamin D receptor gene, with intervertebral disc degeneration (IDD) has been investigated in a multitude of studies. However, conflicting results of these studies led to emergence of several meta-analyses over the past few years. Despite the increased statistical power, these meta-analyses have failed to provide uniform and conclusive data on the relationship of FokI with IDD.

View Article and Find Full Text PDF

In this study, the effective and robust semi-destructive ultrasound assisted extraction (UAE) method followed by gas chromatography coupled to mass spectrometry (GC-MS) method used for analysis of red lipsticks samples was developed, optimized and evaluated. 43 red lipsticks of a very similar hue representing of 21 different manufacturers were investigated. The red lipsticks (approximately 0.

View Article and Find Full Text PDF