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1.
J Perinat Med ; 52(5): 538-545, 2024 Jun 25.
Article in English | MEDLINE | ID: mdl-38639637

ABSTRACT

OBJECTIVES: Cardiopulmonary and infectious complications are more common in preterm newborns after preterm premature rupture of membranes (pPROM). Fetal echocardiography may be helpful in predicting neonatal condition. Our aim was to assess the cardiovascular changes in fetuses from pregnancies complicated by pPROM and possible utility in predicting the intrauterine or neonatal infection, and neonatal heart failure (HF). METHODS: It was a prospective study enrolling 46 women with singleton pregnancies complicated by pPROM between 18+0 and 33+6 weeks of gestation and followed until delivery. 46 women with uncomplicated pregnancies served as a control group. Fetal echocardiographic examinations with the assessment of cardiac structure and function (including pulmonary circulation) were performed in all patients. RESULTS: Mean gestational age of pPROM patients was 26 weeks. Parameters suggesting impaired cardiac function in fetuses from pPROM were: higher right ventricle Tei index (0.48 vs. 0.42 p<0.001), lower blood flow velocity in Ao z-score (0.14 vs. 0.84 p=0.005), lower cardiovascular profile score (CVPS), higher rate of tricuspid regurgitation (18.2 % vs. 4.4 % p=0.04) and pericardial effusion (32.6 vs. 0 %). Intrauterine infection was diagnosed in 18 patients (39 %). 4 (8.7 %) newborns met the criteria of early onset sepsis (EOS). HF was diagnosed in 9 newborns. In fetal echocardiographic examination HF group had shorter mitral valve inflow time and higher left ventricle Tei index (0.58 vs. 0.49 p=0.007). CONCLUSIONS: Worse cardiac function was observed in fetuses from pPROM compared to fetuses from uncomplicated pregnancies.


Subject(s)
Echocardiography , Fetal Membranes, Premature Rupture , Ultrasonography, Prenatal , Humans , Female , Pregnancy , Fetal Membranes, Premature Rupture/diagnosis , Fetal Membranes, Premature Rupture/diagnostic imaging , Adult , Echocardiography/methods , Prospective Studies , Ultrasonography, Prenatal/methods , Infant, Newborn , Fetal Heart/diagnostic imaging , Fetal Heart/physiopathology , Case-Control Studies , Gestational Age
2.
BMC Med Educ ; 24(1): 1137, 2024 Oct 14.
Article in English | MEDLINE | ID: mdl-39402519

ABSTRACT

The Medical University of Warsaw is one of Poland's largest medical universities, currently enrolling nearly 10,000 students, including 608 international undergraduates.This manuscript aims to share our experience with a literature review on organizing and coordinating clinical classes for English Division undergraduate medical students at a single centre in a country where English is not an official language. We would like to highlight certain aspects that have proven highly beneficial in our educational efforts and offer universal advice applicable to clinical classes in any specialty.In this publication, we summarize and emphasize the critical aspects of creating conducive conditions for acquiring knowledge and practical skills by English Division students. We provide readers with good practices for tutor selection, organizational aspects, preparation of educational materials, presenting theoretical knowledge, teaching practical skills, medical simulations, doctor-patient communication, learning progress evaluation, comparison of diverse healthcare environments, students' feedback, and creating opportunities for further development after course completion.


Subject(s)
Education, Medical, Undergraduate , Gynecology , Obstetrics , Humans , Gynecology/education , Obstetrics/education , Students, Medical , Poland , Clinical Competence , Teaching , Curriculum , Female
3.
Opt Express ; 31(14): 23459-23474, 2023 Jul 03.
Article in English | MEDLINE | ID: mdl-37475429

ABSTRACT

Hyperbolic nanoresonators, composed of anisotropic materials with opposite signs of permittivity, have unique optical properties due to a large degree of freedom that hyperbolic dispersion provides in designing their response. Here, we focus on uniaxial hyperbolic nanoresonators composed of a model silver-silica multilayer in the form of spheroids with a broad aspect ratio encompassing both prolate and oblate particles. The origin and evolution of the optical response and mode coupling are investigated using both numerical (T-matrix and FDTD) and theoretical methods. We show the tunability of the optical resonances and the interplay of the shape and material anisotropy in determining the spectral response. Depending on the illumination conditions as well as shape and material anisotropy, a single hyperbolic spheroid can show a dominant electric resonance, behaving as a pure metallic nanoparticle, or a strong dipolar magnetic resonance even in the quasistatic regime. The quasistatic magnetic response of indicates a material-dependent origin of the mode, which is obtained due to coupling of the magnetic and electric multipoles. Such coupling characteristics can be employed in various modern applications based on metasurfaces.

4.
Int J Mol Sci ; 24(13)2023 Jul 01.
Article in English | MEDLINE | ID: mdl-37446161

ABSTRACT

Advanced glycation end products (AGEs) are mediators in the process of cellular dysfunction in response to hyperglycemia. Numerous data indicate that the accumulation of AGEs in the extracellular matrix plays a key role in the development of obesity-related adipose tissue dysfunction. Through binding of their membrane receptor (RAGE), AGEs affect numerous intracellular pathways and impair adipocyte differentiation, metabolism, and secretory activity. Therefore, inhibiting the production and accumulation of AGEs, as well as interfering with the metabolic pathways they activate, may be a promising therapeutic strategy for restoring normal adipose tissue function and, thus, combating obesity-related comorbidities. This narrative review summarizes data on the involvement of the RAGE pathway in adipose tissue dysfunction in obesity and the development of its metabolic complications. The paper begins with a brief review of AGE synthesis and the RAGE signaling pathway. The effect of the RAGE pathway on adipose tissue development and activity is then presented. Next, data from animal and human studies on the involvement of the RAGE pathway in obesity, diabetes, and cardiovascular diseases are summarized. Finally, therapeutic perspectives based on interference with the RAGE pathway are discussed.


Subject(s)
Adipose Tissue , Glycation End Products, Advanced , Animals , Humans , Glycation End Products, Advanced/metabolism , Receptor for Advanced Glycation End Products/metabolism , Adipose Tissue/metabolism , Signal Transduction , Obesity/metabolism
5.
Int J Mol Sci ; 24(24)2023 Dec 13.
Article in English | MEDLINE | ID: mdl-38139276

ABSTRACT

The advanced glycosylation end-product receptor (AGER) is involved in the development of metabolic inflammation and related complications in type 2 diabetes mellitus (T2DM). Tissue expression of the AGER gene (AGER) is regulated by epigenetic mediators, including a long non-coding RNA AGER-1 (lncAGER-1). This study aimed to investigate whether human obesity and T2DM are associated with an altered expression of AGER and lncAGER-1 in adipose tissue and, if so, whether these changes affect the local inflammatory milieu. The expression of genes encoding AGER, selected adipokines, and lncAGER-1 was assessed using real-time PCR in visceral (VAT) and subcutaneous (SAT) adipose tissue. VAT and SAT samples were obtained from 62 obese (BMI > 40 kg/m2; N = 24 diabetic) and 20 normal weight (BMI = 20-24.9 kg/m2) women, while a further 15 SAT samples were obtained from patients who were 18 to 24 months post-bariatric surgery. Tissue concentrations of adipokines were measured at the protein level using an ELISA-based method. Obesity was associated with increased AGER mRNA levels in SAT compared to normal weight status (p = 0.04) and surgical weight loss led to their significant decrease compared to pre-surgery levels (p = 0.01). Stratification by diabetic status revealed that AGER mRNA levels in VAT were higher in diabetic compared to non-diabetic women (p = 0.018). Elevated AGER mRNA levels in VAT of obese diabetic patients correlated with lncAGER-1 (p = 0.04, rs = 0.487) and with interleukin 1ß (p = 0.008, rs = 0.525) and resistin (p = 0.004, rs = 0.6) mRNA concentrations. In conclusion, obesity in women is associated with increased expression of AGER in SAT, while T2DM is associated with increased AGER mRNA levels and pro-inflammatory adipokines in VAT.


Subject(s)
Diabetes Mellitus, Type 2 , RNA, Long Noncoding , Humans , Female , RNA, Long Noncoding/genetics , RNA, Long Noncoding/metabolism , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/genetics , Diabetes Mellitus, Type 2/metabolism , Intra-Abdominal Fat/metabolism , Obesity/complications , Obesity/genetics , Obesity/metabolism , Adipose Tissue/metabolism , Adipokines/genetics , Adipokines/metabolism , Glycation End Products, Advanced/metabolism , RNA, Messenger/genetics , RNA, Messenger/metabolism , Subcutaneous Fat/metabolism
6.
BMC Pregnancy Childbirth ; 22(1): 654, 2022 Aug 19.
Article in English | MEDLINE | ID: mdl-35986350

ABSTRACT

BACKGROUND: Gestational diabetes mellitus (GDM) is a frequent pregnancy complication, affecting the maternal and neonatal health. The new diagnostic strategy for GDM, proposed by the International Association of Diabetes and Pregnancy Study Groups in 2010 and World Health Organization in 2013, raised hope to reduce perinatal complications. The purpose of the study was to compare risk factors influencing maternal and foetal outcomes in a group of pregnant women diagnosed with GDM, and in a group of pregnant women without GDM, regardless of the adopted diagnostic criteria. Also, the aim of the study was to evaluate the impact of risk factors on perinatal results and the "cost" of reducing adverse pregnancy outcomes in patients with GDM. METHODS: It was a retrospective study based on the analysis of births given after 37 weeks of pregnancy at the 2nd Department of Obstetrics and Gynaecology, Warsaw Medical University during the years 2013 to 2015. All pregnant women had a 75 g OGTT between the 24th and 28th weeks of pregnancy. The study compared risk factors for perinatal complications in 285 GDM patients and in 202 randomly selected women without GDM. The impact of selected risk factors on perinatal outcomes was analysed. RESULTS: Both the diagnosis of GDM and maternal BMI prior to pregnancy, significantly modified the risk of excessive and insufficient weight gain during pregnancy. The parameters significantly influencing the risk of the composite adverse maternal outcome were the maternal abdominal circumference [OR: 1.08 (1.04; 1.11)] and multiparity, which reduced the risk by almost half [OR: 0.47 (0.30; 0.75)]. The maternal abdominal circumference before the delivery was a strong factor correlating with the occurrence of perinatal complications in both the mother and the foetus in the entire cohort. A circumference over 100 cm increased the risk of at least one maternal complication (increased blood loss, soft tissue injury, pre-eclampsia) by almost 40% (OR 1.38, p < 0.001). CONCLUSIONS: No differences were found in maternal and foetal outcomes in GDM and non-GDM women except gestational weight gain below Institute of Medicine recommendations. The only "cost" of reducing adverse pregnancy outcomes in GDM patients seems to be lowering gestational weight gain, the future impact of which on GDM pregnant population should be assessed. The maternal abdominal circumference measured before delivery not the severity of carbohydrate intolerance, remained the main predictor for significant perinatal complications.


Subject(s)
Diabetes, Gestational , Gestational Weight Gain , Diabetes, Gestational/diagnosis , Female , Humans , Infant, Newborn , Pregnancy , Pregnancy Outcome/epidemiology , Pregnant Women , Retrospective Studies , Risk Factors
7.
Medicina (Kaunas) ; 58(1)2022 Jan 07.
Article in English | MEDLINE | ID: mdl-35056395

ABSTRACT

BACKGROUND: Global access to social media has supposedly changed women's awareness about the pharmacological and alternative methods of pain relief during vaginal delivery. The purpose of the study was to analyze changes in women's preference and opinion about different forms of labor analgesia over the past decade. MATERIALS AND METHODS: The study was designed as an anonymous survey with questions about women's knowledge and preference of different forms of pain relief in labor. The survey was conducted in 2010 and 2020, with data collected from 1175 women in 2010 and 1033 in 2020. RESULTS: There were no differences between 2010 and 2020 in the proportion of women who wanted to receive analgesia in labor, at, respectively 67.9% of women in 2010 and 73.9% in 2020. About 50% of women chose epidural analgesia as the only efficacious method of pain relief in labor both in 2010 and 2020. There were no differences between the two time-points in the distribution of chosen methods of pain relief. In total, 92.3% of women in 2010 and 94.9% in 2020 thought that they should have the possibility of independent choice of analgesia method before the delivery (p < 0.04). CONCLUSIONS: A high proportion of Polish women choose EDA over other pharmacological and nonpharmacological methods of pain relief in labor, and this preference has not changed over the last decade. Increasing women's knowledge about different methods of intrapartum pain relief may lead to wider use of nonpharmacological methods of pain relief.


Subject(s)
Analgesia, Epidural , Labor, Obstetric , Female , Humans , Pain , Pregnancy , Surveys and Questionnaires
8.
Medicina (Kaunas) ; 57(6)2021 Jun 03.
Article in English | MEDLINE | ID: mdl-34205066

ABSTRACT

Background and Objectives: The maternal preference of mode of delivery is an important problem in respect of patient's autonomy and shared decision-making. The objective of the study was to obtain information about women's preferences of the mode of delivery and knowledge about the cesarean section and its' consequences. Materials and Methods: The study was based on a survey filled in by 1175 women in 2010 and 1033 women in 2020. Respondents were asked about their preference of mode of delivery, possible factors influencing their decision and their knowledge about risks and benefits of cesarean section. Results: There was a significant increase in the rate of women who declared cesarean section as their preferred mode of delivery, from 43.97% in 2010 to 56.03% in 2020 (p < 0.05). In 2010 26.51% of women thought that choice of mode of delivery should be their autonomic decision, 46.36% preferred decision-sharing with their obstetrician, 25.64% thought that cesarean section should be performed for medical indications only (respectively 34.86%, 44.45% and 19.38% in 2020). Conclusions: There has been a significant increase in the rate of Polish women who prefer cesarean delivery over the last decade, as well as in the rate of women who consider the mode of delivery as their autonomic decision.


Subject(s)
Cesarean Section , Family , Female , Humans , Patient Preference , Poland , Pregnancy , Surveys and Questionnaires
9.
Prz Menopauzalny ; 20(1): 40-47, 2021 Apr.
Article in English | MEDLINE | ID: mdl-33935619

ABSTRACT

Urinary tract infection (UTI) is one of the most common infections afflicting women. UTI often accompanies vaginal infections and is frequently caused by pathogens originating in the digestive tract. The paper discusses the prevalence of UTI in various patient populations, including postmenopausal, pregnant, diabetic, epileptic, and perioperative female patients. Current UTI treatment and prevention guidelines both for primary and recurring UTIs were reviewed. Antibiotic treatment duration should be minimized, with the exact dosage and time schedule depending on the type of infection. Asymptomatic bacteriuria does not always require antibiotic treatment, because their excessive use may lead to the emergence of antibiotic resistant strains. The role of non-antibiotic prophylaxis of recurrent infections involving immunomodulants (OM-89), probiotics, and behavioural interventions was underlined.

10.
Opt Express ; 28(24): 36206-36218, 2020 Nov 23.
Article in English | MEDLINE | ID: mdl-33379720

ABSTRACT

Information about microscopic objects with features smaller than the diffraction limit is almost entirely lost in a far-field diffraction image but could be partly recovered with data completition techniques. Any such approach critically depends on the level of noise. This new path to superresolution has been recently investigated with use of compressed sensing and machine learning. We demonstrate a two-stage technique based on deconvolution and genetic optimization which enables the recovery of objects with features of 1/10 of the wavelength. We indicate that l1-norm based optimization in the Fourier domain unrelated to sparsity is more robust to noise than its l2-based counterpart. We also introduce an extremely fast general purpose restricted domain calculation method for Fourier transform based iterative algorithms operating on sparse data.

11.
Opt Lett ; 45(12): 3220-3223, 2020 Jun 15.
Article in English | MEDLINE | ID: mdl-32538947

ABSTRACT

Inhomogeneity of nanoparticle size, shape, and distribution is ubiquitous and inherent in fabricated arrays or may be a deliberate attempt to engineer the optical response. It leads to a spread of polarizabilities of interacting elements and phases of scattered light, and quantitative understanding of these effects is important. Focusing on random/amorphous arrays of optical antennas, we combine T-matrix calculations and an analytical approach based on an effective dipolar polarizability within a film of dipoles framework to quantify the spectral response as a function of the particle inhomogeneity and stochastic clustering. The interplay of position-dependent stochastic coupling and size distribution of antennas determines the optical properties of such arrays as a function of mean/standard deviation of diameter and minimum separation. The resonance wavelength, amplitude, and scattering-to-absorption ratio exhibit oscillations around their size-averaged values with periods and amplitudes given by average structural factors.

12.
Neurol Neurochir Pol ; 54(2): 125-137, 2020.
Article in English | MEDLINE | ID: mdl-32083716

ABSTRACT

INTRODUCTION: Multiple sclerosis (MS) is the most common non-traumatic neurological cause of disability in young adults, affecting women 1-3 times more often than men. Several specific challenges arise from the fact that young women diagnosed with MS often have to make decisions related to treatment and family planning at the same time. These issues are connected with fertility, the impact of pregnancy on disease course, the choice of pregnancy timing, and the optimal mode of disease-modifying therapy in the context of a planned pregnancy, contraception, urological complaints, and sexual dysfunction. STATE OF THE ART: While MS does not in itself adversely affect fertility, pregnancy or childbirth, pregnancy needs to be carefully planned. This requires the interdisciplinary co-operation of a neurologist, gynaecologist and psychologist. Data on the impact of disease-modifying drugs on foetal development are very limited, and none of these drugs is 100% safe during pregnancy. In the second and third trimesters, MS relapse rate decreases. Unfortunately, it increases within the first 3-6 months after delivery. Adequate disease control should be achieved before pregnancy, as relapse rate in the period of two years preceding pregnancy is one of the strongest predictive factors for post-partum relapses. CLINICAL IMPLICATIONS: The following is a statement by a working group of experts in neurology, gynaecology, obstetrics and urology, convened by the Section of Multiple Sclerosis and Neuroimmunology of the Polish Neurological Society, addressing the issues that are specific to the female MS population. The aim of this statement is to provide guidance in pregnancy planning and disease management, both during pregnancy and post-partum. FUTURE DIRECTIONS: This statement reflects expert opinion and is not intended to be read as guidelines. It rather provides up-to-date information on how to optimise care of female MS patients of childbearing age.


Subject(s)
Gynecology , Multiple Sclerosis , Obstetrics , Pregnancy Complications , Female , Humans , Male , Poland , Postpartum Period , Pregnancy , Young Adult
13.
Opt Lett ; 44(5): 1241-1244, 2019 Mar 01.
Article in English | MEDLINE | ID: mdl-30821758

ABSTRACT

We propose a method of reduction of experimental noise in single-pixel imaging by expressing the subsets of sampling patterns as linear combinations of vertices of a multidimensional regular simplex. This method also may be directly extended to complementary sampling. The modified measurement matrix contains nonnegative elements with patterns that may be directly displayed on intensity spatial light modulators. The measurement becomes theoretically independent of the ambient illumination, and in practice becomes more robust to the varying conditions of the experiment. We show how the optimal dimension of the simplex depends on the level of measurement noise. We present experimental results of single-pixel imaging using binarized sampling and real-time reconstruction with the Fourier domain regularized inversion method.

14.
Adv Exp Med Biol ; 1153: 47-54, 2019.
Article in English | MEDLINE | ID: mdl-30924028

ABSTRACT

Plasminogen activator inhibitor type 1 (PAI-1) belongs to the family of the plasminogen activator system. PAI-1 stimulates fibrinolysis and also promotes tumor progression. The aim of this study was to evaluate the prognostic value of blood plasma PAI-1 content in patients with epithelial ovarian cancer who start the first-line chemotherapy. PAI-1 content was measured in the blood of 61 patients with epithelial ovarian cancer at onset of first-line chemotherapy. The patients were further stratified into the low PAI-1 group (≤20 ng/mL; 33 patients) and the high PAI-1 group (>20 ng/mL; 28 patients). We found that the greater plasma PAI-1 content was associated with a significantly lower probability of a 5-year-long survival compared to that when PAI-I content was lower (45.5% vs. 69.5%, respectively; p = 0.04). However, the risk of cancer recurrence within 5 years failed to differ appreciably. A multivariate analysis revealed that the lower PAI-1 plasma content was an independent factor of longer overall survival (death risk ratio of 0.36, 95%CI = 0.16-0.79; p < 0.01). We conclude that PAI-1 is yet another biomarker of survival in patients with ovarian cancer.


Subject(s)
Ovarian Neoplasms , Plasminogen Activator Inhibitor 1 , Female , Humans , Neoplasm Recurrence, Local , Ovarian Neoplasms/blood , Ovarian Neoplasms/drug therapy , Ovarian Neoplasms/mortality , Plasminogen Activator Inhibitor 1/blood , Prognosis , Urokinase-Type Plasminogen Activator
15.
Adv Exp Med Biol ; 1176: 81-88, 2019.
Article in English | MEDLINE | ID: mdl-31069723

ABSTRACT

Hypercoagulability and altered lipid metabolism, which are observed in normal pregnancy, can be enhanced in diabetes mellitus. The aim of the study was to evaluate the influence of glycemic control on coagulation and lipid metabolism in women with pregestational (PGDM) and gestational (GDM) diabetes treated with insulin. There were 50 patients with PGDM and 101 patients with GDM enrolled into the study. Serum lipid and coagulation parameters were assessed at 18-22, 25-28, and 31-34 weeks of pregnancy and were compared within the diabetic groups with reference to the effectiveness of glycemia control. We found that poor glycemic control was associated with shortened activated partial thromboplastin time (APTT) and increased activity of antithrombin III (ATIII) in both diabetic groups and with a higher plasminogen activator inhibitor (PAI-1) content level in the GDM group. Poorly controlled PGDM was associated with higher levels of total cholesterol and high-density cholesterol (HDL) in the second trimester and triglycerides in the third trimester. In patients with poorly controlled GDM, a higher concentration of HDL was observed in third trimester, whereas a higher triglyceride level was found in both second and third trimesters. Positive correlations between total cholesterol and APTT and between triglyceride and APTT and ATIII were found in the poorly controlled PGDM group. We conclude that poor glycemic control of diabetic pregnancy impacts both lipid metabolism and the blood coagulation system.


Subject(s)
Blood Coagulation , Diabetes, Gestational , Lipid Metabolism , Blood Coagulation/physiology , Cholesterol/blood , Diabetes, Gestational/physiopathology , Female , Humans , Lipid Metabolism/physiology , Pregnancy , Triglycerides/blood
16.
Ginekol Pol ; 90(1): 1-6, 2019.
Article in English | MEDLINE | ID: mdl-30756364

ABSTRACT

OBJECTIVES: Peroxiredoxins (PRDXs) constitute a family of antioxidant enzymes which are also involved in the process of carcinogenesis. They are composed of six identified isoforms (PRDX-1-6) and are supposed to play different roles in tumor progression, depending on type of cancer and member of the PRDX family. The aim of the study was to assess the prog- nostic value of PRDXs in ovarian cancer. MATERIAL AND METHODS: a dataset of patients with ovarian cancer from The Cancer Genome Atlas was analyzed. Expression of PRDX-1 to 6 mRNA was evaluated in 260 samples. The prognostic value of PRDXs was assessed using the Cox regression model which included the following clinical and pathological data: age, clinical stage, tumor grade, and residual disease. RESULTS: Within the PRDXs family, only higher expression of PRDX-5 was associated with worse overall survival both, in unselected patients and > 50-year-olds. PRDX-5 expression and residual disease were independent negative prognostic factors of patient survival. CONCLUSIONS: PRDX-5 is a negative predictor of survival in ovarian cancer.


Subject(s)
Ovarian Neoplasms , Peroxiredoxins , Female , Humans , Middle Aged , Ovarian Neoplasms/chemistry , Ovarian Neoplasms/metabolism , Ovarian Neoplasms/mortality , Ovarian Neoplasms/pathology , Ovary/pathology , Peroxiredoxins/analysis , Peroxiredoxins/genetics , Peroxiredoxins/metabolism , Prognosis
17.
Opt Express ; 26(16): 20009-20022, 2018 Aug 06.
Article in English | MEDLINE | ID: mdl-30119318

ABSTRACT

We present a closed-form image reconstruction method for single-pixel imaging based on the generalized inverse of the measurement matrix. Its numerical cost scales proportionally with the number of measured samples. Regularization of the inverse problem is obtained by minimizing the norms of the convolution between the reconstructed image and a set of spatial filters. The final reconstruction formula can be expressed in terms of matrix pseudoinverse. At high compression, this approach is an interesting alternative to the methods of compressive sensing based on l1-norm optimization, which are too slow for real-time applications. For instance, we demonstrate experimental single-pixel detection with real-time reconstruction obtained in parallel with measurement at a frame rate of 11 Hz for highly compressive measurements with a resolution of 256 × 256. To this end, we preselect the sampling functions to match the average spectrum obtained with an image database. The sampling functions are selected from the Walsh-Hadamard basis, from the discrete cosine basis, or from a subset of Morlet wavelets convolved with white noise. We show that by incorporating the quadratic criterion into the closed-form reconstruction formula, we can use binary rather than continuous sampling and reach similar reconstruction quality as is obtained by minimizing the total variation. This makes it possible to use cosine- or Morlet-based sampling with digital micromirror devices without advanced binarization methods.

18.
Neuro Endocrinol Lett ; 38(6): 441-448, 2017 Dec.
Article in English | MEDLINE | ID: mdl-29298286

ABSTRACT

OBJECTIVE: The aim of the study was to compare the perinatal outcome of pregnancies in mothers who were diagnosed with gestational diabetes mellitus (GDM) with previous versus current Polish Gynecological Society (PTG) criteria. METHODS: 475 patients were divided into three groups. In group A, the patients only met the previous PTG criteria for a GDM diagnosis, i.e., those with a blood glucose level of 140-152 mg/dl 2 hours after administration, a fasting glucose level <92 mg/dl, and a blood glucose level <180 mg/dl 1 hour after administration. Group B included patients complying with both the previous and current PTG criteria for a GDM diagnosis. Group C included patients who only met the current PTG criteria for a GDM diagnosis, i.e., those with a fasting blood glucose level of 92-99 mg/dl, a blood glucose level <180 mg/dl 1 hour and <140 mg/dl 2 hours after administration, respectively. RESULTS: Women from group C were characterized by the highest fasting glycaemia in the first trimester of pregnancy (93.0 mg/dL vs. 88.0 mg/dL vs. 83.5 mg/dL, p=0.012) and during the OGTT (p=0.001). Gestational diabetes was diagnosed significantly earlier in patients from group C (23 vs. 26 vs. 26 weeks, p=0.005). The patients from group A significantly less frequently required insulin therapy for proper glycemic control (p=0.035). Women from group A were characterized by lower pre-pregnancy BMI (p=0.001). CONCLUSIONS: Current PTG criteria for diagnosing GDM according to the IADPSG allow for identification of women who often require insulin therapy to achieve proper glycemic control.


Subject(s)
Blood Glucose/analysis , Diabetes, Gestational/diagnosis , Adult , Diabetes, Gestational/blood , Female , Glucose Tolerance Test , Humans , Pregnancy , Pregnancy Outcome
19.
Neuro Endocrinol Lett ; 38(7): 502-508, 2017 Dec.
Article in English | MEDLINE | ID: mdl-29369602

ABSTRACT

OBJECTIVES: Amoxicillin is a broad-spectrum beta-lactam antibiotic. Due to its low toxicity, it is commonly used in obstetrics. The objective of this study was to assess amoxicillin concentrations in amniotic fluid, umbilical blood, placenta and maternal serum two hours following oral administration among pregnant women at term and to assess obstetric and non-obstetric factors that might affect amoxicillin's penetration of these tissues. MATERIALS AND METHODS: A total of 30 full-term pregnant women who qualified for elective Caesarean delivery were included in the study. Amoxicillin at a dose of 500 mg was administered prior to surgery. Amoxicillin levels were determined by diffusion microbial assay. RESULTS: The maternal serum, placental, umbilical blood and amniotic fluid levels of amoxicillin two hours after oral administration were 2.18±1.30 µg/g, 1.00±0.71 µg/g, 1.00±0.73 µg/g, and 0.67±0.59 µg/g, respectively (Table 2). Maternal serum levels of amoxicillin were significantly higher compared to other tissues (p<0.05). CONCLUSION: If the target tissues for the use of antibiotic drugs in pregnant patients are the fetus and/or the placenta, the drug should be administered in a higher-than-standard dose than that used to treat infections in non-pregnant patients. Considering that there is a maximum absorbable dose following oral administration, intravenous administration should be considered to prevent failure of antibiotic treatment. A higher dose of amoxicillin should be considered in obese mothers.


Subject(s)
Amniotic Fluid/metabolism , Amoxicillin/pharmacokinetics , Anti-Bacterial Agents/pharmacokinetics , Fetal Blood/metabolism , Placenta/metabolism , Adult , Amoxicillin/blood , Anti-Bacterial Agents/blood , Female , Humans , Pregnancy , Young Adult
20.
Ginekol Pol ; 88(6): 307-311, 2017.
Article in English | MEDLINE | ID: mdl-28727129

ABSTRACT

OBJECTIVES: TNF is one of the key cytokines involved in cancer development. TNF signaling can result in both stimulating and inhibitory signals that can result in opposite biological effects in cancerogenesis. 2-(1-adamantylamino)-6-methylpyridine (AdAMP) enhances TNF secretion whereas N-a-tosyl-L-phenylalanine chloromethyl ketone (TPCK) is a NF-κB inhibitor potentially stimulating proapoptotic TNF signals. The aim of the study was to assess the effect of TPCK in combination with AdAMP on human ovarian cells. MATERIAL AND METHODS: CAOV-1 human ovarian cell line was incubated with TPCK and AdAMP for 24 hours. The cytotoxic effect was evaluated in a crystal violet assay. A monoclonal antibody against TNF, Infliximab, was added to examine the possible mechanism of interactions. RESULTS: Depending on concentration, AdAMP potentialized cytotoxic activity of TPCK or had a synergistic effect with TPCK. Infliximab did not reverse cytotoxicity of AdAMP and TPCK and in some cytotoxic and non-cytotoxic concentrations even enhanced their cytotoxicity. CONCLUSIONS: AdAMP and TPCK cytotoxicity seems to be dependent on TNF signaling, however, the exact mechanism of interactions remains unclear.


Subject(s)
Adamantane/analogs & derivatives , Aminopyridines/toxicity , Cell Survival/drug effects , Ovarian Neoplasms/pathology , Tosylphenylalanyl Chloromethyl Ketone/toxicity , Tumor Cells, Cultured/drug effects , Adamantane/toxicity , Apoptosis/drug effects , Cell Line, Tumor , Drug Synergism , Female , Humans , Infliximab/pharmacology , Signal Transduction/drug effects , Tumor Necrosis Factor-alpha/physiology
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