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(1) Background and Objective: Excessive gestational weight gain is associated with serious complications such as pre-eclampsia, fetal macrosomia and a more frequent need for cesarean section. The aim of this study is to develop a simple screening model that includes maternal age, BMI and nutritive habits in the second trimester in order to predict the risk of GDM in the population of pregnant women in the territory of the Republic of Serbia. (2) Materials and Methods: This single-center, prospective and case-control study was performed in the University Clinical Center "Dr. Dragisa Misovic Dedinje", Belgrade, Serbia and included 54 women with singleton pregnancies during the second trimester from July 2023 to November 2023. We used basic demographic and socio-epidemiological data, as well as data of the present comorbidities and previous pregnancies/births. The Serbian version of the Nutritive Status Questionnaire (NSQ) was used to estimate the nutritive habits in GDM (n = 22) and non-GDM groups (n = 32). (3) Results: We observed less frequent vegetable and fruit consumption in the GDM group in comparison with the non-GDM group; meat and chicken intake was 2-3 times per week in both groups; meat products were consumed 2-3 times per week in the GDM group and 2-3 times per month in the non-GDM group; milk products were consumed once a day in 31.8% of GDM patients and twice per day in 24.1% of non-GDM patients. Sweets (cakes, ice creams, biscuits) were consumed very often (2-3 times per week) in the GDM group (36.4%), while in the non-GDM group this habit was less frequent (26.7%). Cronbach alpha and internal consistency for this instrument were very good (Cronbach alpha = 0.87). (4) Conclusions: We have found that a non-adequate intake of fruits/vegetables, dairy and whole grain, as well as an excessive intake of sugar/artificially sweetened beverages and dairy, was associated with a higher risk of gestational diabetes mellitus (OR = 0.04; 95% CI).
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Diabetes Gestacional , Gravidez , Feminino , Humanos , Diabetes Gestacional/epidemiologia , Diabetes Gestacional/diagnóstico , Estudos Prospectivos , Cesárea , Estudos de Casos e Controles , Edulcorantes , VerdurasRESUMO
Coronavirus Disease 2019 (COVID-19) has been ranked among the most fatal infectious diseases worldwide, with host's immune response significantly affecting the prognosis. With an aim to timely predict the most likely outcome of SARS-CoV-2 infection, we investigated the association of IFNL3 and IFNL4 polymorphisms, as well as other potentially relevant factors, with the COVID-19 mortality. This prospective observational case-control study involved 178 COVID-19 patients, hospitalized at Corona Center or Clinic for Infectious Diseases of University Clinical Centre Kragujevac, Serbia, followed up until hospital discharge or in-hospital death. Demographic and clinical data on all participants were retrieved from the electronic medical records, and TaqMan assays were employed in genotyping for IFNL3 and IFNL4 single nucleotide polymorphisms (SNPs), namely rs12980275, rs8099917, rs12979860, and rs368234815. 21.9% and 65.0% of hospitalized and critically ill COVID-19 patients, respectively, died in-hospital. Multivariable logistic regression analysis revealed increased Charlson Comorbidity Index (CCI), N/L, and lactate dehydrogenase (LDH) level to be associated with an increased likelihood of a lethal outcome. Similarly, females and the carriers of at least one variant allele of IFNL3 rs8099917 were almost 36-fold more likely not to survive SARS-CoV-2 infection. On the other hand, the presence of at least one ancestral allele of IFNL4 rs368234815 decreased more than 15-fold the likelihood of mortality from COVID-19. Our results suggest that, in addition to LDH level, N/L ratio, and CCI, IFNL4 rs368234815 and IFNL3 rs8099917 polymorphisms, but also patients' gender, significantly affect the outcome of COVID-19.
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COVID-19 , Interleucinas , Feminino , Humanos , Estudos de Casos e Controles , Genótipo , Mortalidade Hospitalar , Interferons , Interleucinas/genética , Polimorfismo de Nucleotídeo Único , SARS-CoV-2RESUMO
Despite the pivotal role of IFN-λs in the innate immune response, the data on its genetic polymorphism in relation to COVID-19 severity are scarce and contradictory. In the present study, we aimed to determine if the presence of the most frequent functional single nucleotide polymorphisms (SNPs) of the two most important IFN-λs coding genes, namely IFNL3 and IFNL4, alters the likelihood of SARS-CoV-2-infected patients to develop more severe form of the disease. This observational cohort study involved 178 COVID-19 patients hospitalized at the University Clinical Centre Kragujevac, Serbia. Patients' demographics, clinical characteristics, and laboratory parameters were collected at admission. COVID-19 signs and symptoms were assessed during the hospital stay, with the worst condition determining the disease severity. Genotyping for IFNL3 (rs12980275 and rs8099917) and IFNL4 (rs12979860 and rs368234815) SNPs was conducted using TaqMan assays. Our study revealed carriers of IFNL3 and IFNL4 minor alleles to be less likely to progress from mild to moderate COVID-19, that is, to develop COVID-19-related pneumonia. After adjustment for other factors of influence, such as age, sex, and comorbidities, the likelihood of pneumonia development remained significantly associated with IFNL4 polymorphism (odds ratios [ORs] [95% confidence interval (95% CI)]: 0.233 [0.071; 0.761]). When the patients were stratified according to sex, the protective role of IFNL4 minor alleles, controlled for the effect of comorbidities, remained significant only in females (OR [95% CI]: 0.035 [0.003; 0.408]). Our results strongly suggest that IFNL4 rs12979860 and rs368234815 polymorphisms independently predict the risk of COVID-19-related pneumonia development in females.
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COVID-19 , Humanos , Feminino , COVID-19/genética , SARS-CoV-2 , Alelos , Polimorfismo de Nucleotídeo Único , Bioensaio , Interferon lambda , Interleucinas/genéticaRESUMO
AIM: The study assessed the relationship between vitamin D status in infants and the presence of allergic and/or respiratory disorders. MATERIALS AND METHODS: The study cohort comprised 81 hospitalized infants presenting at the Pediatric Clinic, University Clinical Center Kragujevac, Serbia, between January 2011 and June 2016. RESULTS: The age of the infants ranged from 29 days to 12 months. All infants received prophylactic doses of vitamin D3 of 400 IU/daily until the end of the first year of life regardless of whether they are fed with adapted infant formula (n = 20) or breast milk (n = 37) or concurrently both (n = 24), up to the 5th month of life. The mean level of plasma 25(OH)D was 29.65 ng/mL. Hypovitaminosis D (mean serum level of 25(OH)D < 30 ng/mL) was found in n = 38 infants of which 6 presented with severe vitamin D deficiency (level below 10 ng/mL), 13 presented with vitamin D deficiency (level between 10 and 20 ng/mL) and 19 had vitamin D insufficiency (levels between 20 and 30 ng/mL). The median vitamin D serum level in infants with allergic disease (n = 16) was 32.35 ng/mL and in infants with respiratory disease (n = 65) 28.99 ng/mL. CONCLUSION: Daily vitamin D3 supplementation with 400 IU in infants until the end of the first year of life is too low to provide optimal defense against respiratory and/or allergic conditions.
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Hipersensibilidade , Deficiência de Vitamina D , Criança , Feminino , Lactente , Humanos , Recém-Nascido , Vitamina D , Incidência , Deficiência de Vitamina D/diagnóstico , Deficiência de Vitamina D/tratamento farmacológico , Deficiência de Vitamina D/epidemiologia , Colecalciferol , Hipersensibilidade/epidemiologia , Hipersensibilidade/prevenção & controle , Hipersensibilidade/complicações , Suplementos NutricionaisRESUMO
In children, the incidence of Legionnaires' disease (LD) is unknown, hospital-acquired LD is associated with clinical risk factors and environmental risk, and children with cell-mediated immune deficiency are at high risk of infection. Both newborns were born in the same delivery room; stayed in the same hospital room where they were cared for, bathed, and breastfed; were male; were born on time, with normal birth weight, and with high Apgar score at birth; and survived this severe infection (L. pneumophila, serogroup 2-15) but with different clinical courses. In neonate 1, bleeding in the brain, thrombosis of deep pelvic veins, and necrosis of the lungs, which left behind cystic and cavernous changes in the lungs, were found, while neonate 2 suffered from pneumonia alone. The only difference in risk factors for LD between these two newborns is the number of days of illness until the start of azithromycin treatment (sixth versus the third day of illness). We suggest that a change in the guidelines for diagnosing and treating community-acquired pneumonia and hospital-acquired pneumonia in newborns is needed in terms of mandatory routine testing for Legionella pneumophila. Early initiation of macrolide therapy is crucial for the outcome of LD in the newborn.
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Infecções Comunitárias Adquiridas , Legionella pneumophila , Doença dos Legionários , Azitromicina/uso terapêutico , Criança , Infecções Comunitárias Adquiridas/diagnóstico , Infecções Comunitárias Adquiridas/tratamento farmacológico , Infecções Comunitárias Adquiridas/epidemiologia , Feminino , Maternidades , Humanos , Recém-Nascido , Doença dos Legionários/diagnóstico , Doença dos Legionários/tratamento farmacológico , Doença dos Legionários/epidemiologia , Masculino , GravidezRESUMO
Defining certain parameters of the oocyte microenvironment that can be simply and quickly detected and that enable differentiation of oocytes that have better or worse quality could potentially increase the efficacy of the in vitro fertilization (IVF) method. Follicular fluid represents the microenvironment for the development of oocytes during different stages of maturation. Enzymes present in the follicular fluid may affect the quality of oocytes. There are inconsistencies in the literature concerning enzyme concentration in follicular fluid. The main aim of this study was to examine whether the concentration of enzymes aspartate aminotransferase, alanine aminotransferase (ALT), alkaline phosphatase, and lactate dehydrogenase in follicular fluid can influence the outcome of IVF. The study included 120 patients who were involved in the process of IVF. We used the follicular fluid obtained after follicular aspiration in the ovaries as biological material for the analysis. The values of enzymes LDL (method-kinetic UV test), aspartate aminotransferase (method-kinetic UV test), ALT (method-kinetic UV test) and alkaline phosphatase (method-colorimetric kinetic test) in the follicular fluid were determined on the analyzer ÐU 680, Becman Coulter. The criteria of the Istanbul consensus of clinical embryologists were used for the embryo assessment. The software package SPSS 20 was used for the statistical processing of data. The results of follicular fluid sample analysis showed a correlation between ALT concentration in the follicular fluid and IVF outcome. Based on our results, we can conclude that ALT concentration affects the outcome of IVF.
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Fosfatase Alcalina , Líquido Folicular , Feminino , Humanos , Fertilização in vitro/métodos , Oócitos , Aspartato AminotransferasesRESUMO
The quality of an oocyte is influenced by its microenvironment, which includes cumulus cells and follicular fluid, as well as cells of the immune system and their products. The ovarian interleukins, which are secreted by the granulosa cells and other immune cells within the ovaries and follicles, regulate various functions between the cells. IL-6 is a cytokine that is present in the follicular fluid and may affect the quality of oocytes. There are some inconsistencies in the literature regarding the concentration of interleukin 6 in the follicular fluid. The main objective of this study was to examine whether the concentration of interleukin 6 in the follicular fluid affects the outcome of IVF. This study involved 83 patients who underwent IVF. Follicular fluid was used as the biological material for the analysis. Examination of the obtained follicular fluid and collection of oocytes under a stereomicroscope was performed in the embryological laboratory. The concentration of IL-6 in the follicular fluid was analyzed. IVF and ICSI methods were used as the fertilization methods. Pregnancy was confirmed by the positive serum ß-hCG level. The software package SPSS 20 was used for statistical data processing. Analysis of the follicular fluid samples showed a correlation between the concentration of IL-6 in the follicular fluid and the outcome of IVF. The concentration of IL-6 in the follicular fluid was higher in patients with confirmed pregnancy (9.55 ± 7.47 ng/ml). Based on our results, we conclude that the concentration of IL-6 affects the outcome of IVF. If the range of IL-6 concentration is between 3,67 ng/ml and 10 ng/ml, we can expect good IVF outcome with vital pregnancy.
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Líquido Folicular , Interleucina-6 , Feminino , Fertilização in vitro/métodos , Células da Granulosa , Humanos , Oócitos , GravidezRESUMO
INTRODUCTION: The aim of the study was to investigate prevalence of bacteria most frequently associated with bacterial vaginosis using Amsel's criteria as well as to quantify these bacteria by real-time PCR and to explore the difference in their quantity between healthy and bacterial vaginosis samples. METHODOLOGY: For classification of vaginal discharge samples Amsel's criteria have been used. To detect and quantify Gardnerella vaginalis Atopobium vaginae, Lactobacillus spp. and total vaginal microbiome, real-time PCR has been applied. RESULTS: According to results of our study Amsel's criteria matched well with real-time PCR diversification of healthy women and women with BV. Nevertheless, real-time PCR has been more sensitive in diagnosis of bacterial vaginosis. DNA quantification of bacteria demonstrated that mutual abundance of G.vaginalis and A. vaginae was good bacterial vaginosis marker . On the contrary, Lactobacillus spp. was present in high amount in both healthy and bacterial vaginosis samples, but ratio of investigated bacteria was different between them. In fact, G. vaginalis and A. vaginae comprised only 0.1% of total microbiome in healthy, whereas Lactobacillus spp. took 99.3% of it. Nonetheless, in bacterial vaginosis, G. vaginalis and A. vaginae made up 34.4% of total microbiome, while Lactobacillus spp. was 21.6%. CONCLUSIONS: According to the results of our study real-time PCR analysis was more sensitive in diagnosis of bacterial vaginosis than Amsel's method, as well as it represented fine tool in making a difference between microbial entities in healthy and bacterial vaginosis samples.
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Infecções por Bactérias Gram-Positivas/microbiologia , Vaginose Bacteriana/microbiologia , Actinobacteria/genética , Actinobacteria/isolamento & purificação , Adulto , Estudos de Casos e Controles , Feminino , Gardnerella vaginalis/genética , Gardnerella vaginalis/isolamento & purificação , Infecções por Bactérias Gram-Positivas/diagnóstico , Humanos , Lactobacillus/genética , Lactobacillus/isolamento & purificação , Reação em Cadeia da Polimerase em Tempo Real , Sérvia , Vaginose Bacteriana/diagnóstico , Adulto JovemRESUMO
BACKGROUND AND OBJECTIVES: Although ML has been studied for different epidemiological and clinical issues as well as for survival prediction of COVID-19, there is a noticeable shortage of literature dealing with ML usage in prediction of disease severity changes through the course of the disease. In that way, predicting disease progression from mild towards moderate, severe and critical condition, would help not only to respond in a timely manner to prevent lethal results, but also to minimize the number of patients in hospitals where this is not necessary. METHODS: We present a methodology for the classification of patients into 4 distinct categories of the clinical condition of COVID-19 disease. Classification of patients is based on the values of blood biomarkers that were assessed by Gradient boosting regressor and which were selected as biomarkers that have the greatest influence in the classification of patients with COVID-19. RESULTS: The results show that among several tested algorithms, XGBoost classifier achieved best results with an average accuracy of 94% and an average F1-score of 94.3%. We have also extracted 10 best features from blood analysis that are strongly associated with patient condition and based on those features we can predict the severity of the clinical condition. CONCLUSIONS: The main advantage of our system is that it is a decision tree-based algorithm which is easier to interpret, instead of the use of black box models, which are not appealing in medical practice.
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Inteligência Artificial , COVID-19 , Biomarcadores , Progressão da Doença , Humanos , Aprendizado de Máquina , SARS-CoV-2RESUMO
Clinical manifestations of SARS-CoV-2 infection range from mild to critically severe. The aim of the study was to highlight the immunological events associated with the severity of SARS-CoV-2 infection, with an emphasis on cells of innate immunity. Thirty COVID-19 patients with mild/moderate symptoms and 27 patients with severe/critically severe symptoms were recruited from the Clinical Center of Kragujevac during April 2020. Flow cytometric analysis was performed to reveal phenotypic and functional alterations of peripheral blood cells and to correlate them with the severity of the disease. In severe cases, the number of T and B lymphocytes, dendritic cells, NK cells, and HLA-DR-expressing cells was drastically decreased. In the monocyte population proportion between certain subsets was disturbed and cells coexpressing markers of M1 and M2 monocytes were found in intermediate and non-classical subsets. In mild cases decline in lymphocyte number was less pronounced and innate immunity was preserved as indicated by an increased number of myeloid and activated dendritic cells, NK cells that expressed activation marker at the same level as in control and by low expression of M2 marker in monocyte population. In patients with severe disease, both innate and adoptive immunity are devastated, while in patients with mild symptoms decline in lymphocyte number is lesser, and the innate immunity is preserved.
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Imunidade Adaptativa , COVID-19/imunologia , Células Dendríticas/imunologia , Imunidade Inata , Monócitos/imunologia , SARS-CoV-2/imunologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Antígenos de Diferenciação/imunologia , COVID-19/patologia , Células Dendríticas/patologia , Feminino , Citometria de Fluxo , Antígenos HLA-DR/imunologia , Humanos , Células Matadoras Naturais/imunologia , Células Matadoras Naturais/patologia , Masculino , Pessoa de Meia-Idade , Monócitos/patologiaRESUMO
INTRODUCTION: Commercially available assays were evaluated in order to determine diagnostic accuracy of Chlamydia trachomatis specific tests for screening. METHODS: The study included 225 sexually active men and women, who were tested for genital chlamydial infection in Institute of Public Health Kragujevac. Three screening tests were used: direct immunofluorescence (DIF) and rapid lateral immunochromatographic test (RT) for qualitative detection of chlamydial antigens and immunoenzyme (ELISA) test for detection of serum levels of anti-chlamydial IgA and IgG antibodies. Diagnostic efficiency of these tests were determined in relation to results obtained by RT-PCR method. RESULTS: Statistical significance between the results obtained by RT-PCR as a gold standard and DIF, RT and ELISA were analyzed using chi-square (χ2) test. Statistical analysis showed a significant difference between RT-PCR and analyzed screening tests: DIF (χ2 = 303; p < 0.001), RT (χ2 = 4.19; p = 0.041), serum IgA (χ2 = 4.19; p = 0.041) and serum IgG (χ2 = 67; p < 0.001) which indicates poor agreement between these tests. Large numbers of false positive (FP) and false negative (FN) results were observed for all tested assays. According to Youden's index, serum IgG and DIF testing demonstrated the most-balanced sensitivity-specificity rate. RT assay exhibits the highest expanded Youden's index, as well as the best overall diagnostic accuracy. CONCLUSIONS: None of evaluated screening tests can be recommended as individual method for the diagnosis of acute infection. We suppose that RT-PCR is unlikely to be a cost-effective screening strategy within the Serbian health system.
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Infecções por Chlamydia/diagnóstico , Ensaio de Imunoadsorção Enzimática/métodos , Técnica Direta de Fluorescência para Anticorpo/métodos , Imunoensaio/métodos , Adulto , Infecções por Chlamydia/genética , Infecções por Chlamydia/imunologia , Chlamydia trachomatis/patogenicidade , Reações Falso-Negativas , Reações Falso-Positivas , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto JovemRESUMO
There is established association between oxidative stress, infections of genital tract and fertility. Genital tract infections may provoke increased production of free radicals and generate oxidative stress that can be involved in pathophysiology of a number of reproductive diseases and complications during pregnancy. The aim of this study was to determine connection between oxidative stress and infertility associated with persistent chlamydial infection. Serum samples of infertile women with tubal factor infertility (TFI), women with multiple spontaneous abortions (MSA) and fertile women was screened for C. trachomatis MOMP specific IgG and IgA antibodies and cHSP60 specific igG antibodies using ELISA. The levels of superoxide anion radical, nitric oxide and reduced glutathione were determined spectrophotometricaly. Serum levels of testosterone, luteinizing hormone and follicle stimulating hormone were determined by enzyme-linked fluorescent immunoassay method. Our results showed that persistent infection was more prevalent in TFI than in MSA group, whereas seropositivity was higher in MSA than in TFI group of patients. We also found that superoxide anion was significantly lower, while LH was markedly higher in TFI and MSA group of patients. However, when our results were analyzed according to the serological status of chlamydial infection, we found that parameters of oxidative stress, superoxide anion and index of oxidative stress, defined as relative ratio between superoxide anion and nitrites sum and glutathione ((O2-+NO2-)/GSH) were significantly elevated in infertile patients with persistent chlamydial infection compared to seropositive and seronegative patients. Our findings point to the possible impact of Chlamydia trachomatis infection on prooxidative-antioxidative balance that can influence fertility potential in women with persistent chlamydial infection.
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Infecções por Chlamydia/patologia , Infertilidade Feminina , Estresse Oxidativo , Aborto Habitual/microbiologia , Adulto , Chaperonina 60/metabolismo , Chlamydia trachomatis/imunologia , Ensaio de Imunoadsorção Enzimática , Doenças das Tubas Uterinas/microbiologia , Feminino , Humanos , Imunoglobulina G/sangue , Imunoglobulina M/sangue , Proteínas Mitocondriais/metabolismoRESUMO
INTRODUCTION: Linezolid is an oxazolidinone antibiotic active against Gram-positive bacteria, and is most commonly used to treat life-threatening infections in critically ill patients. The pharmacokinetics of linezolid are profoundly altered in critically ill patients, partly due to decreased function of vital organs, and partly because life-sustaining drugs and devices may change the extent of its excretion. AREAS COVERED: This article is summarizes key changes in the pharmacokinetics of linezolid in critically ill patients. The changes summarized are clinically relevant and may serve as rationale for dosing recommendations in this particular population. EXPERT OPINION: While absorption and penetration of linezolid to tissues are not significantly changed in critically ill patients, protein binding of linezolid is decreased, volume of distribution increased, and metabolism may be inhibited leading to non-linear kinetics of elimination; these changes are responsible for high inter-individual variability of linezolid plasma concentrations, which requires therapeutic plasma monitoring and choice of continuous venous infusion as the administration method. Acute renal or liver failure decrease clearance of linezolid, but renal replacement therapy is capable of restoring clearance back to normal, obviating the need for dosage adjustment. More population pharmacokinetic studies are necessary which will identify and quantify the influence of various factors on clearance and plasma concentrations of linezolid in critically ill patients.
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Antibacterianos/farmacocinética , Infecções por Bactérias Gram-Positivas/tratamento farmacológico , Linezolida/farmacocinética , Antibacterianos/administração & dosagem , Antibacterianos/uso terapêutico , Estado Terminal , Relação Dose-Resposta a Droga , Monitoramento de Medicamentos/métodos , Bactérias Gram-Positivas/efeitos dos fármacos , Humanos , Linezolida/administração & dosagem , Linezolida/uso terapêutico , Falência Hepática/fisiopatologia , Insuficiência Renal/fisiopatologia , Distribuição TecidualRESUMO
Classification of the neurons in the human basolateral amygdala is performed on preparations impregnated by the Golgi technique. Three different neuronal types are found in the nuclei of the basolateral amygdala: Type I--Pyramidal cells, with numerous dendritic spines and two subtypes (slender and squat); Type II--Modified pyramidal cells, sparsely spinous with rare dendritic spines and two subtypes (single apical and double apical) and; Type III--Non-pyramidal cells, with few dendritic spines and three subtypes (bipolar, multipolar and gliaform). The analysis of the primary dendritic branches pointed out the occasional presence of dendritic bundles (fascicular dendritic arrangement) with their predomination in the parvicellular division of the basal nucleus and paralaminar nucleus. Additionally, the presence of dendrodendritic contacts, indicated by light microscopy, was also found in the parvicellular division of the basal nucleus and especially in the paralaminar nucleus.
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Tonsila do Cerebelo/citologia , Dendritos/ultraestrutura , Neurônios/citologia , Adulto , Idoso , Cadáver , Feminino , Complexo de Golgi/ultraestrutura , Humanos , Masculino , Pessoa de Meia-Idade , Neuroglia/citologia , Neurônios/classificação , Células Piramidais/citologiaRESUMO
We investigated chromosomal instability in peripheral blood lymphocytes (PBL) of patients with reproductive failure in respect to age, smoking habits, gender, miscarriages, and semen parameters. The study involved 36 individual cases of reproductive failure (18 men and 18 women) attended at the Clinical Centre of Kragujevac, Serbia, and 30 healthy subjects (15 men and 15 women). Micronuclei (MN) frequency was estimated in PBL using the cytokinesis-block micronucleus (CBMN) assay. The baseline MN frequencies were significantly higher (p=0.031; p<0.001) in male [(9.22 ± 4.70) MN per 1000 BN cells] and female patients [(13.50 ± 2.5) MN per 1000 BN cells] than in male and female healthy controls [(6.27 ± 2.66) MN per 1000 BN cells; (6.80 ± 2.98) MN per 1000 BN cells]. The mean baseline MN frequency did not significantly differ between miscarriage groups and between patients with and without normal values of semen parameters. The correlations between poor sperm concentration (<20x106 mL-1), rapid progressive motility (<25 %), normal morphology (<30 %), and MN frequencies were negative, but not statistically significant. We found that only gender significantly influenced the MN rates in analysed patients. There were no significant differences between age groups and between smokers and non-smokers in patients and control samples. We conclude that the increase in baseline MN frequency in PBL of patients with reproductive failure corresponds to the increase in chromosomal damage, which occurs as a result of complex events that cause reproductive disorders.
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Instabilidade Cromossômica/genética , Infertilidade Feminina/genética , Leucócitos Mononucleares/patologia , Micronúcleos com Defeito Cromossômico , Adulto , Feminino , Humanos , Infertilidade Feminina/sangue , Infertilidade Feminina/patologia , Masculino , Testes para Micronúcleos/métodos , Sérvia , Adulto JovemRESUMO
The external morphology of the occipital lobe was investigated in 15 human post-mortem brains (30 hemispheres) fixed in formalin. We identified, described and measured the lengths of nine major human occipital sulci and five variable ones, comparing both types between individuals and hemispheres. Morphological variability of human occipital sulci is related to interindividual and interhemispheric differences in their presence, origin, type, segmentation, intersection and length. The major occipital sulci, particularly the parieto-occipital, the calcarine, the inferior lateral occipital and the anterior occipital sulci, as well as two points of their intersections (cuneal point and intersection of the transverse occipital and superior occipital sulcus) may be used as reliable anatomical landmarks for the location of architectonically and functionally defined human visual areas (V1, V2, V3, V3A, V5/MT+, LO1 and LO2) and during less invasive neurosurgical procedures in the cases of focal lesions within the occipital lobe. Two lateral occipital sulci (inferior and superior) were defined on the lateral surface of the occipital lobe. The variable lunate sulcus was studied and combining our results with those from histological and functional imaging studies, we suggest that the lunate sulci of human and nonhuman primates are not homologous.
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Lobo Occipital/anatomia & histologia , Adulto , Idoso , Mapeamento Encefálico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Córtex Visual/anatomia & histologiaRESUMO
BACKGROUND/AIM: Nucleus accumbens is a part of the ventral striatum also known as a drug active brain region, especially related with drug addiction. The aim of the study was to investigate the Golgi morphology of the nucleus accumbens neurons. METHODS: The study was performed on the frontal and sagittal sections of 15 human brains by the Golgi Kopsch method. We classified neurons in the human nucleus accumbens according to their morphology and size into four types: type I--fusiform neurons; type II--fusiform neurons with lateral dendrite, arising from a part of the cell body; type III--pyramidal-like neuron; type IV--multipolar neuron. The medium spiny neurons, which are mostly noted regarding to the drug addictive conditions of the brain, correspond to the type IV--multipolar neurons. RESULTS: Two regions of human nucleus accumbens could be clearly recognized on Nissl and Golgi preparations each containing different predominant neuronal types. Central part of nucleus accumbens, core region, has a low density of impregnated neurons with predominant type III, pyramidal-like neurons, with spines on secondary branches and rare type IV, multipolar neurons. Contrary to the core, peripheral region, shell of nucleus, has a high density of impregnated neurons predominantly contained of type I and type IV--multipolar neurons, which all are rich in spines on secondary and tertiary dendritic branches. CONCLUSION: Our results indicate great morphological variability of human nucleus accumbens neurons. This requires further investigations and clarifying clinical significance of this important brain region.
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Neurônios/citologia , Núcleo Accumbens/anatomia & histologia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Coloração e RotulagemRESUMO
INTRODUCTION: Insecticides are toxins by which we destroy harmful insects. The most frequent insecticides which are used today are organophosphorus pesticides. This group of compounds make substances whose activity mechanism is based on the inhibition of acetylcholinesterase in nerve synapsis, thus producing holynergic syndrome, resulting from the accumulation of acetylcholine which developed due to the absence of decomposition under the influence of cholinesterase. In the clinical picture of acute toxication by cholinesterase inhibitors there is a clear difference between muscarinic and nicotine effects. The basic aim of the study was to establish the effects of organophosphorus pesticides present in blood and breast milk of mothers on newborns morbidity. MATERIAL AND METHODS: The study group consisted of 18 newborns whose mothers had isolated organophosphorus pesticides in their blood and breast-milk on the third day after delivery, and the control group consisted of 84 newborns whose mothers did not have isolated organophosphorus pesticides in their blood and breastmilk. RESULTS: Morbidity is three times greater, often in combination with some disorders of the central nervous system, and the relative risk for its appearance is eight time greater in newborns exposed to organophosphorus pesticides. DISCUSSION: Disorders that appear in newborns exposed to pesticides are mutagenic, cancerogenic and neurotoxic and some agenses could disturb the immune system which is reflected in morbidity increase, primarly of the central nervous system. CONCLUSION: The presence of organophosphorus pesticides in blood and breast milk has negative effects on newborns. In addition to acetylcholinesterase inhibition, organophosphorus pesticides react by means of other mechanisms as well.
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Doenças do Recém-Nascido/induzido quimicamente , Leite Humano/química , Compostos Organofosforados/análise , Resíduos de Praguicidas/análise , Feminino , Humanos , Recém-Nascido , Doenças do Recém-Nascido/etiologia , Compostos Organofosforados/sangue , Compostos Organofosforados/toxicidade , Resíduos de Praguicidas/toxicidade , GravidezRESUMO
Subiculum proper is an archicortical structure of the subicular complex and presents the place of origin of great majority of axons of the whole hippocampal formation. In contrast to the hippocampus which has been intensively studied, the data about human subiculum proper are quite scarce. The aim of our study was to identify morphological characteristics of neurons of the human subiculum proper. The study was performed on 10 brains of both genders by using Golgi impregnation and Nissl staining. The subiculum has three layers: molecular, pyramidal and polymorphic layer. The dominant cell type in the pyramidal layer was the pyramidal neurons, which had pyramidal shaped soma, multiple basal dendrites and one apical dendrite. The nonpyramidal cells were scattered among the pyramidal cells of the pyramidal layer. The nonpyramidal cells were classified on: multipolar, bipolar and neurons with triangular-shaped soma. The neurons of the molecular layer of the human subiculum were divided into groups: bipolar and multipolar neurons. The most numerous cells of the polymorphic layer were bipolar and multipolar neurons.
Assuntos
Hipocampo/anatomia & histologia , Neurônios/citologia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
INTRODUCTION: Before birth, most of foetuses located in mother's uterus have head presentation down towards the breech exit. Preterm delivery presents the delivery before the end of the 37th gestational week. Etiology of preterm breech deliveries is the same as of the ones at term, such as uterine malformations and myomas, polyhydramnion, foetal abnormalities, high parity, short umbical cord, placenta previa. The complications include passing of the body through insufficiently dilated cervical channel and "capturing " of the head, umbilical cord prolapse, intrapartal hipoxy, discoordinated delivery, aspiration pneumonia, traumatic injuries. The basic aim of the research was to determine prematurity, mortality, colority of the amniotic fluid, and newborn condition with breech deliveries comparing to the head presentation deliveries. MATERIAL AND METHODS: The study group consisted of 282 newborns that came from breech deliveries and the same number of the controls born with head presentation. In cases of breech deliveries there was greatly higher quantity of green and meconium amniotic fluid, significantly higher prematurity, significantly lower average Apgar score as well as seven times higher mortality of newborns comparing with the values in head presentation deliveries. DISCUSSION: Meconium amniotic fluid can result in greater risk than aspiration pneumonia which is the characteristics of breech deliveries. There are more causes endangering fetal vitalty after breech delivery and those are along with prematurity, greater number of congenital malformations, often traumas which depend on delivery course as well as hipoxy caused during delivery. Prematurity of fetus is one of risk factors resulting in breech delivery but it is also its main characteristics. CONCLUSION: Breech delivery brings greater risk measured by Apgar score values, appearance of meconium amniotic fluid, prematurity with its consequences and perinatal mortality.