[Not Available].

The aim of this study was to examine association between IFNL4 gene ss469415590 and treatment efficiency in group of Ukrainian PEG-interferon/ribavirin-treated chronic hepatitis C patients. Study group consisted of 92 unrelated hepatitis C virus genotype 1 mono-infected patients: case group - 29 patients with late or absent virological response; control group - 63 patients with sustained virological response. Study material was genomic DNA.

polymorphism as a predictor of chronic hepatitis C treatment efficiency in Ukrainian patients.

The aim of this study was to examine association between gene ss469415590 and treatment efficiency in group of Ukrainian PEG-interferon/ribavirin-treated chronic hepatitis C patients. Study group consisted of 92 unrelated hepatitis C virus genotype 1 mono-infected patients: case group-29 patients with late or absent virological response; control group-63 patients with sustained virological response. Study material was genomic DNA.

ITPA gene variant may protect against anemia induced during pegylated interferon alfa and ribavirin combination treatment in Ukrainian patients with chronic hepatitis C.

The aim of this study was to clarify the association between the inosine triphosphate pyrophosphatase (ITPA) gene variants and PEG-IFNalpha/RBV combination treatment induced anemia in chronic hepatitis C (CHC) Ukrainian patients. The data were collected from 80 CHC patients with HCV genotype 1 infection. All study participants received standard doses of PEG-IFNalpha and RBV According to the Hb level changes patients were distributed into: case group--42 patients with combination treatment induced anemia, and control group--38 patients with no signs of anemia.

Cardioprotection of the enkephalin analog Eribis peptide 94 in a rat model of ischemia and reperfusion is highly dependent on dosing regimen and timing of administration.

Eribis Peptide 94 (EP94) is an enkephalin analog with cardioprotective properties in ischemia and reperfusion. The aim of the present study was to define the optimal timing and dosing of the administration of EP94 during ischemia and reperfusion in a rat model. 172 anesthetized and mechanically ventilated male Sprague-Dawley rats were randomly assigned to different administration protocols of EP94 and subjected to 30 or 40 min of coronary artery occlusion followed by 2h of reperfusion.

Acute and chronic cardioprotection by the enkephalin analogue, Eribis peptide 94, is mediated via activation of nitric oxide synthase and adenosine triphosphate-regulated potassium channels.

Background/aims: Eribis peptide 94 (EP 94) is a new enkephalin derivative which potently binds to the µ- and δ-opioid receptor. In this study, we determined the effects of EP 94 and potential mechanism(s) involved in cardioprotection of the rat heart.

Methods And Results: An acute (5 and10 min into ischemia) and a chronic (24 h prior to ischemia) EP 94 administration produced a similar 30-40% reduction in infarct size/area at risk and the effects were blocked by the K(ATP) channel antagonists, HMR 1098 and 5-HD.

Eribis peptide 94 reduces infarct size in rat hearts via activation of centrally located μ opioid receptors.

Eribis peptide 94 (EP 94) is a novel enkephalin derivative that binds with high potency to μ and δ opioid receptors with less affinity for the κ opioid receptor. This compound has recently been shown to produce an acute reduction in myocardial infarct size in the anesthetized pig and rat partially via an endothelial nitric oxide synthase and KATP channel-dependent mechanism. EP 94 also was found to produce a chronic reduction in infarct size 24 hours postdrug administration via the upregulation of inducible nitric oxide synthase in rats.

Dose-dependent cardioprotection of enkephalin analogue Eribis peptide 94 and cardiac expression of opioid receptors in a porcine model of ischaemia and reperfusion.

Opioids confer cardioprotection after myocardial ischaemia and reperfusion. The primary aim of the present study was to evaluate the cardioprotective effect of different doses of enkephalin analogue Eribis peptide 94 (EP 94) in a porcine model of ischaemia and reperfusion. A secondary aim was to analyse the impact of ischaemia and reperfusion on the expression of opioid receptor subtypes in the porcine heart.

Opioid receptor agonist Eribis peptide 94 reduces infarct size in different porcine models for myocardial ischaemia and reperfusion.

Eribis peptide 94 (EP 94) is a novel enkephalin analog, thought to interact with the μ- and δ-opioid receptors. The purpose of the present study was to examine the cardioprotective potential of EP 94 in two clinically relevant porcine models of myocardial ischaemia and reperfusion, and to investigate if such an effect is associated with an increased expression of endothelial nitric oxide synthase (eNOS). Forty-one anesthetized pigs underwent 40min of coronary occlusion followed by 4h of reperfusion.

A structure-activity study of nociceptin-(1-13)-peptide amide. Synthesis of analogues substituted in positions 0, 1, 3, 4 and 10.

A series of analogues of nociceptin, Noc(1-13)NH(2) (an agonist at the ORL1 receptor) was synthesized with following modifications: (1) N-terminal extension with Arg(0); (2) replacement of Gly(3) by basic or polar amino acids-Arg, Asn, Lys(For) or deletion; (3) exchange of Phe(1) or Phe(4) by Phe(NO(2)); (4) substitution of Ser(10) with D-Ser, Pro, D-Pro. The analogs were synthesized by solid-phase methodology using Fmoc-amino acid pentafluorophenyl esters. The affinity for the ORL1 and for the kappa, micro and delta-opioid receptors was investigated by radioligand binding assay and bioactivity by a mouse vas deferens (MVD) assay.

[Health status of children living in rural localities in the area of Totsk nuclear explosion].

The paper presents late outcomes of radiation exposure of 3205 children aged 6-17 years from native persons residing in the areas exposed to radiation 40 years ago. The spread of noncommunicable diseases in the children from the polluted area is 92%. Organic abnormalities are prevalent among them.

[Change in distribution of actin and intermediate filaments at early stages of action of epidermal growth factor on A431 cells].

By electron microscopy using immunocytochemical reactions on actin and EGF-R with mild glycerinization it became possible to reveal a thick layer of actin filaments under the apical membrane within the first minutes of the impact of EGF on A431 cells. Keratin fibrils being located near the nucleus are transported apart from the membrane. It is supposed that this process is connected with retardation of capping on principles of competition.

[Synthesis of a cyclic enkephalin analog with prolonged action].

A cyclic analog of enkephalin, cyclo(Lys-Tyr-DMet-Gly-Phe-Pro-) and two corresponding linear hexapeptides with lysine residue on the N- and C-termini of the pentapeptide sequence, Lys-Tyr-DMet-Gly-Phe-Pro and Tyr-DMet-Gly-Phe-Pro-Lys were synthesized by classical and solid phase methods of peptide chemistry. The cyclic analog exhibited significantly prolonged analgesic effect, evaluated by the "tail pinch" method after intracysternal injection to mice. The cycloanalog also had a weak influence on the peripheral opiate receptors of the isolated segment of guinea pig iliac intestine.

[Methods of detection and characteristics of clinical manifestations of tuberculosis in children and adolescents].

Methods of detection of tuberculous infection in 127 children and adolescents treated in special hospitals and sanatoria have seen analyzed. The diagnosis was made using tuberculin in 62.2%, epidemiological evidence in 12.

[The significance of the mu- and delta-opiate receptors in realizing enkephalin action on the course of hypoxic hypoxia].

New enkephalins analogues have been synthesized. They are characterized by linear, cyclic and branched peptide chain. A relationship has been established between antihypoxic activity of opioid peptides an their interaction with opiate receptors.

[Thermography in assessing the microcirculation of patients with acute and chronic viral hepatitis].

The important role is emphasized of microcirculatory disorders in the pathogenesis of viral hepatitis and the necessity of their early diagnosis. For this purpose the method of infrared thermography of the upper extremities (hands) was used that allowed to reveal pronounced disorders of the peripheral hemodynamics in a significant number of patients with acute and chronic viral hepatitis, in particular, hepatitis B that promoted a more severe, progressive course of the disease. It is concluded that for instituting pathogenetically substantiated treatment, prognosis and prevention of unfavourable outcomes it is necessary to supplement clinico-laboratory data by instrumental examination of the terminal blood flow, in particular, thermography of the extremities.

[Neuromotor dyskinesia occurring during repeated injections of enkephalins into the rat striatum].

The effect of 3-week daily injection of 5 or 15 mg enkephalin-like tetrapeptides (TP) into the rostral neostriatum was studied in chronic experiments on rats with implanted microcannulas. According to the type of TP, hyperkinesia or a pathological cataleptic status was registered in disorder of conditioned reflex behavior of rats. Myoclonus of the muscles of the face and the muscles of the front limbs was encountered from the 10th till the 120th minute after the injection and was characterized by dynamic changes during chronic administration of the agent and clearly defined stage of generalization.

[The microcirculatory function in the chronic HBs-antigen carrier state].

The authors discuss the problem of widely spread chronic carrier state of HBs-antigen by healthy persons. The majority of antigen carriers show both moderate clinico-biochemical and ultrasonic signs of chronic liver involvement, and different disorders of the microcirculation which are formed in conditions of prolonged persistence of the virus of B hepatitis in the body. Early diagnosis of generalized disorders of the terminal blood circulation in antigen carriers may be useful in the determination of pathogenetically substantiated treatment tactics and prognostication of unfavourable outcomes of chronic HBs-antigen carrier state in preclinical period of the disease.

[The effect of modification of the carboxyl group in short D-arginine 2-containing enkephalin analogs on their affinity and selectivity for opiate receptors].

Radioreceptor binding assay using a membrane fraction from the rat brain was applied to study [D-Arg2, Leu5] enkephalin and two series of its analogues truncated at the C-terminus with a free or modified carboxyl group: tetra- and tripeptide amides and ethyl esters. The affinity to mu-specific opiate receptor subtype of the N-terminal [D-Arg2] tetrapeptide ethyl ester was 44 times as high as that of the tripeptide with a free carboxyl, and thus the ester retained up to 10% of leucine-enkephalin binding potency. However, a comparable esterification of the carboxyl group in the N-terminal [D-Arg2] tripeptide led to a 6-fold reduction in its affinity to mu-receptors.