Hepcydyna a wybrane wskaźniki gospodarki żelazem u ciężarnych kobiet i donoszonych noworodków w pierwszych dniach życia

Objectives: The amount of iron is regulated by hepcidin. The aim of the study was to assess hepcidin concentrations in healthy pregnant women before delivery, in cord blood, and in 3-day-old newborns in relation to maternal and neonatal iron status. Material and methods: The study group consisted of 44 mother-newborn pairs. Serum concentrations of hepcidin, ferritin, and transferrin receptor (sTfR) were assessed. Results: Maternal hepcidin was significantly lower than cord blood (p < 0.001), and full-term newborn values (p < 0.001). Mothers also had the lowest ferritin and sTfR concentrations. The highest concentration of hepcidin was observed in the newborns. They had lower sTfR and higher ferritin concentrations than in cord blood (p < 0.001). Maternal ferritin correlated negatively with sTfR (R = -0.50 p = 0.005), and positively with hepcidin (R = 0.41; p = 0.005). There were no correlations between hepcidin and ferritin or sTfR concentrations in cord blood, nor between hepcidin and ferritin or sTfR concentrations in the newborns. Moreover, there were no correlations between maternal and cord blood or neonatal blood hepcidin, nor between maternal hepcidin and infant iron status. There were also no correlations between hepcidin in cord blood and hepcidin or parameters of the iron status in the children. Conclusions: It may be assumed that a relatively low concentration of hepcidin in women in late pregnancy facilitates their iron accumulation. Higher levels of hepcidin in full-term newborns than in their mothers may be the result of a relatively high level of iron from the stored supplies. Neonatal iron status was independently associated with either maternal or cord blood hepcidin.Cel pracy: Niedobór żelaza lub jego nadmiar ma niekorzystny wpływ na rozwój dziecka. Ilość żelaza regulowana jest przez hepcydynę. Celem pracy było określenie stężenia hepcydyny u zdrowych ciężarnych i u donoszonych noworodków, w zależności od stanu ich zaopatrzenia w żelazo. Materiał i metody: Badaniem objęto 44 pary matka-dziecko. Pobrano próbki krwi od ciężarnych przed porodem, z pępowiny i od noworodków w trzeciej dobie życia. W surowicy oznaczano stężenie hepcydyny, ferrytyny i rozpuszczalnego receptora transferyny (sTfR). Wyniki: Stężenie hepcydyny u matek było istotnie statystycznie niższe niż w krwi pępowinowej (p < 0,001) i u noworodków (p < 0,001). Matki miały najniższe stężenia ferrytyny i sTfR. Najwyższe stężenie hepcydyny stwierdzono u noworodków (p < 0,001). Noworodki miały też najwyższe stężenie ferrytyny (p < 0,001) i niższe niż w krwi pępowinowej stężenie sTfR (p < 0,001). U matek, stężenie ferrytyny korelowało negatywnie ze stężeniem sTfR (R = -0,50; p = 0,005) i pozytywnie ze stężeniem hepcydyny (R=0,41; p = 0,005). Nie wykazano korelacji między stężeniem hepcydyny a ferrytyny czy sTfR w krwi pępowinowej oraz między stężeniem hepcydyny a stężeniem ferrytyny, sTfR czy poziomem Hb u noworodków. Nie było również korelacji między stężeniami hepcydyny u matki, w krwi pępowinowej czy w krwi noworodka, jak też między stężeniem hepcydyny u matki i parametrami gospodarki żelazem u noworodka. Wnioski: Na podstawie przeprowadzonych badań można przypuszczać, że niskie stężenie hepcydyny u ciężarnych pozwala na zwiększenie zasobów żelaza do poziomu pokrywającego zapotrzebowanie płodu. Wysokie jej stężenie w krwi pępowinowej i u noworodków wynika ze stosunkowo dobrego zaopatrzenia w żelazo dzieci urodzonych o czasie. Gospodarka żelazem u noworodków nie zależy bezpośrednio od hepcydyny w krwi matki czy w krwi pępowinowej

Ischemic stroke as a rare cause of seizures in a newborn – case report

Background: Identifying etiology of seizures is the primary clinical objective in the management of neonatal seizures (NS). About 85 % of NS cases occurr as a consequence of a specific, identifiable etiology. Causes of symptomatic NS can be broadly categorized as: hypoxic-ischemic encephalopathy, electrolyte or metabolic disturbances, CNS or systemic infections, developmental defects and acquired structural brain lesions, including hemorrhagic or ischemic stroke. Ischemic stroke is characterized as a sudden focal or generalized brain function disruption, whose symptoms tend to last longer than 24 hours (or cause death) and have no other reason but a vascular one. The reported annual incidence is estimated at one per 4000 live births for neonates. The aim of this case report is to present diagnostic difficulties in case of ischemic stroke in apparently healthy neonate. This case concerns a patient – a full-term male newborn, who was in a good condition in the first 3 days after birth. At the beginning of the 4th day of life 3 episodes of right-sided clonic seizures with right-sided nystagmus occurred and which was the reason for admitting the patient to the Department of Neonate and Infant Pathology. Shortly after arrival the seizures appeared again. Laboratory tests showed slightly lowered glucose level and elevated serum concentration of lactic acid. The ultrasound examination of the head revealed a small right-sided subependymal cyst. The patient’s condition was deteriorating, with recurring righ-sided clonic and tonic seizures accompanied by apnea and desaturation that required resuscitation efforts. Because of worsening state of the patient, CT scan was performed. The CT examination revealed a hypodensic area in the left parietal region and cerebral edema, which indicated a possible ischemic stroke. Conclusions: The absence of visible pathologies in the ultrasound examination of the head does not necessarily indicate a lack of CSN abnormalities. More precise imaging tests are needed to identify the cause of NS

Ligands of the CB2 cannabinoid receptors augment activity of the conventional antidepressant drugs in the behavioural tests in mice

Although a lot of information can be found on the specific dual role of the endocannabinoid system in the emotional-related responses, little is known whether stimulation or inhibition of the cannabinoid (CB) receptors may affect the activity of the frequently prescribed antidepressant drugs. Our interests have been particularly focused on the potential influence of the CB$_{2}$ receptors, as the ones whose central effects are relatively poorly documented when compared to the central effects of the CB$_{1}$ receptors. Therefore, we evaluated the potential interaction between the CB$_{2}$ receptor ligands (i.e., JWH133 - CB$_{2}$ receptor agonist and AM630 - CB$_{2}$ receptor inverse agonist) and several common antidepressant drugs that influence the monoaminergic system (i.e., imipramine, escitalopram, reboxetine). In order to assess the antidepressant-like effects we used two widely recognized behavioural tests, the mouse forced swim test (FST) and the tail suspension test (TST). Brain concentrations of the tested antidepressants were evaluated by the HPLC method. Intraperitoneal co-administration of per se ineffective doses of JWH133 (0.25 mg/kg) or AM630 (0.25 mg/kg) with imipramine (15 mg/kg), escitalopram (2 mg/kg), and reboxetine (2.5 mg/kg) significantly shortened the immobility time of mice in the FST and the TST, whereas it did not disturb their spontaneous locomotor activity. Furthermore, the brain levels of antidepressants were not changed. Summarizing, the results of the present study revealed that both activation and inhibition of the CB2 receptor function have a potential to strengthen the antidepressant activity of drugs targeting the monoaminergic system. Most probably, the described interaction has a pharmacodynamic background

Evaluation of the oral cavity state and Candida occurence in generally healthy Polish and foreign dental students

Aim of the study. This study aimed at comparing the oral cavity condition and Candida prevalence in generally healthy Polish and foreign dentistry students and evaluating the relationship between Candida occurrence and the oral cavity condition. Material and methods. 79 dentistry students with no systemic diseases, aged 20–25 (mean 23.5), were examined in the present study. Two groups of examined subjects were specified: 43 Polish students (group I) and 36 foreign students (group II). Group II has been divided into subgroups: IIa – students from Taiwan and IIb – students from Europe and USA. Occurence of oral mucosa lesions, periodontal treatment needs (CPITN), caries prevalence (DMFT) and oral hygiene (OHIs) were investigated. Evaluation of Candida occurrence on the oral mucosa was included in the study. Results. Comparison of the oral cavity condition in Polish and foreign students showed no significant difference, with the exception of the number of teeth with active caries, that was significantly higher in foreign students (D 1,2) than in Polish students (D 0.4). Mean indices rates in the group I were: CPITN 0.9; PUWz 8.7; OHI-s 0.4 in the group II 1.0; 7.0; 0,5, respectively. The most commonly observed oral mucosa lesions, in both groups, were white coated tongue and buccal white line. Candida was found in 38,0% of the subjects, its prevalence was similar in both groups (I – 34.9%, II – 41.7%). No correlation between Candida occurence and oral cavity state was detected. Higher frequency of active caries in Candida carriers was the exception

Influence of the endocannabinoid system on the antidepressant activity of bupropion and moclobemide in the behavioural tests in mice

Background Though there are several classes of antidepressant drugs available on the pharmaceutical market, depression that affects globally over 320 million people is still undertreated. Scientists have made attempts to develop novel therapeutical strategies to maximize effectiveness of therapy and minimize undesired reactions. One of the ideas is use of either dual-action agents or combined administration of two substances that affect diverse neurotransmissions. Thus, we investigated whether the selected CB receptor ligands (oleamide, AM251, JWH133, and AM630) can have an impact on the activity of bupropion and moclobemide. Bupropion belongs to the dual acting drugs, whereas moclobemide is an inhibitor of monoamine oxidase. Methods The mice forced swim test and the tail suspension test were applied in order to determine the potential antidepressant-like activity, whereas the HPLC method was used in order to assess the brain concentrations of the tested antidepressants. Results An intraperitoneal injection of sub-effective doses of oleamide (5 mg/kg), AM251 (0.25 mg/kg), and AM630 (0.25 mg/kg) increased activity of bupropion (10 mg/kg) in both behavioural tests. Effects of moclobemide (1.5 mg/kg) were potentiated only by AM251. These results were not influenced by the hypo- or hyperlocomotion of animals. Conclusion The outcomes of the present study revealed that particularly activation or inhibition of the CB1 receptor function may augment the antidepressant activity of bupropion, whereas only inhibition of the CB1 receptor function manages to increase activity of moclobemide. Most probably, an interplay between CB receptor ligands and bupropion or moclobemide takes place at the cellular level

Impact of nonoptimal intakes of saturated, polyunsaturated, and trans fat on global burdens of coronary heart disease

Background: Saturated fat (SFA), ω‐6 (n‐6) polyunsaturated fat (PUFA), and trans fat (TFA) influence risk of coronary heart disease (CHD), but attributable CHD mortalities by country, age, sex, and time are unclear. Methods and Results: National intakes of SFA, n‐6 PUFA, and TFA were estimated using a Bayesian hierarchical model based on country‐specific dietary surveys; food availability data; and, for TFA, industry reports on fats/oils and packaged foods. Etiologic effects of dietary fats on CHD mortality were derived from meta‐analyses of prospective cohorts and CHD mortality rates from the 2010 Global Burden of Diseases study. Absolute and proportional attributable CHD mortality were computed using a comparative risk assessment framework. In 2010, nonoptimal intakes of n‐6 PUFA, SFA, and TFA were estimated to result in 711 800 (95% uncertainty interval [UI] 680 700–745 000), 250 900 (95% UI 236 900–265 800), and 537 200 (95% UI 517 600–557 000) CHD deaths per year worldwide, accounting for 10.3% (95% UI 9.9%–10.6%), 3.6%, (95% UI 3.5%–3.6%) and 7.7% (95% UI 7.6%–7.9%) of global CHD mortality. Tropical oil–consuming countries were estimated to have the highest proportional n‐6 PUFA– and SFA‐attributable CHD mortality, whereas Egypt, Pakistan, and Canada were estimated to have the highest proportional TFA‐attributable CHD mortality. From 1990 to 2010 globally, the estimated proportional CHD mortality decreased by 9% for insufficient n‐6 PUFA and by 21% for higher SFA, whereas it increased by 4% for higher TFA, with the latter driven by increases in low‐ and middle‐income countries. Conclusions: Nonoptimal intakes of n‐6 PUFA, TFA, and SFA each contribute to significant estimated CHD mortality, with important heterogeneity across countries that informs nation‐specific clinical, public health, and policy priorities.peer-reviewe

Evaluation of serum zinc levels in patients with recurrent aphthous stomatitis (RAS)

Abstract Background Recurrent aphthous stomatitis (RAS) is an ulcerative disease of the oral mucosa without a clearly defined etiology. The aim of the study was to evaluate the serum zinc levels in patients with RAS in comparison to healthy controls and to validate the association between zinc levels and the course of RAS. Methods Seventy-five patients with RAS and 72 controls underwent full dental examination. Serum zinc levels were determined by flame atomic absorption spectroscopy (F AAS). The results were statistically analyzed with Kruskal-Wallis, Mann-Whitney, chi-square tests and the test of difference between the two rates of structure with p < 0.05 as a significance level (Statistica 10, StatSoft®). Results No statistically significant differences were detected in serum zinc levels between RAS patients and healthy controls. The mean serum zinc concentration was found to be 84.2 μg/dL in RAS group and 83.9 μd/dL in controls, within the accepted norms. Zinc deficiency was observed in 10.7% patients from the RAS group and in 6.9% controls. No significant differences in serum zinc levels were found between patients when the course of the disease was considered. Conclusions Serum zinc concentrations did not differ significantly in RAS patients and in healthy controls and it did not influence the course of the disease. Therefore, zinc does not appear to be an important modifying factor in the development of RAS

Vitamin D status in recurrent aphthous stomatitis

Introduction: Recurrent aphthous stomatitis (RAS) is a common chronic inflammatory oral mucosa disease with an unknown cause. However, dysregulation of the immune response seems to play an important role in this disease. Aim : To evaluate the vitamin D status in RAS patients and its effects on RAS severity, given the likely immunomodulatory function of vitamin D in the human organism. Material and methods : Sixty-six patients with RAS and 66 controls were examined. Immunomodulatory or immunosuppressive treatment and other ulcerative oral diseases were used as exclusion criteria. The severity of RAS was assessed according to the clinical classification of the disease, the number of lesions per flare-up and the length of intervals between the attacks. The serum vitamin D level was established in each participant. Results : The mean serum vitamin D (25(OH)D) levels were found to be 16.81 ng/ml in the study group and 19.22 ng/ml in the control group, with no statistically significant difference between the two groups. In the study group, 5 (7.6%) participants were diagnosed with the “normal” vitamin D levels, while 16 (24.2%) had “insufficient” levels and 45 (68.2%) had “deficient” levels. The corresponding distribution in the control group was 8 (12.1%), 18 (27.3%) and 40 (60.6%), respectively. There was no statistical significance in the difference of vitamin D deficits between the study and the control groups. No correlation was detected between the severity of RAS and the serum vitamin D level. Conclusions : Vitamin D does not seem to be a trigger factor for RAS occurrence and does not appear to influence the severity of the disease in the studied group

Immunopathological Assessment of the Oral Mucosa in Dermatitis Herpetiformis

Dermatitis herpetiformis (Duhring&rsquo;s disease, DH) is a chronic blistering cutaneous condition with pruritic polymorphic lesions, consisting of vesicles, papules or nodules and erythema, found predominantly on the extensor surfaces of the limbs, buttocks, and neck. Diagnosis is based on characteristic clinical and immunopathological findings. Oral manifestations of DH have rarely been described. The aim of the study was to evaluate IgA, IgG, IgM and C3 complement deposits in the oral mucosa in DH patients. Direct immunofluorescence (DIF) was performed on the oral mucosa specimens collected from 10 DH patients. Biopsy was taken in a local anesthesia from perilesional site from the buccal mucosa and then preserved in a standard procedure using polyclonal rabbit IgG, IgA, IgM and C3 antibodies. Granular IgA and C3 deposits were found in 6 patients (60%), and in 3 subjects (30%) the result was indeterminate. Significant fluorescence of the deposits along the basement membrane was observed in 2 patients, moderate fluorescence in 3 patients, and in 4 cases the result was indeterminate. C3 deposits were found in 5 subjects (50%), 3 of them being moderate and 2 indeterminate. No IgM and IgG deposits were detected in the collected buccal mucosa specimens