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1.
Vopr Pitan ; 91(4): 83-89, 2022.
Artigo em Russo | MEDLINE | ID: mdl-36136949

RESUMO

Breast milk is a source of all the essential nutritional components necessary for the full growth and development of the child, therefore, it is necessary to study its composition and physical and chemical properties in order to adapt human milk substitutes. Adapted infant milk formulas are produced mainly from cow's milk, bringing formula nutrient composition closer to the composition of women's milk, adapting it in accordance with the requirements of the infant body. However, technological processes for the production of dairy products contribute to the activation of oxidative reactions, the violation of protein conformation. The purpose of the study was to compare the intensity of formation of carbonyl derivatives of human and cow's milk proteins during spontaneous and metal-catalyzed oxidation. Material and methods. The object of the study were samples of mature milk of healthy nursing mothers (n=12), and samples of drinking ultra-pasteurized milk for baby nutrition (n=8) which were used as a comparison material. The intensity of oxidative modification of milk proteins was determined spectrophotometrically by the interaction of carbonyl derivatives of amino acid residues with 2.4-dinitrophenylhydrazine to form 2.4-dinitrophenylhydrazone derivatives in a native sample of biological material and under induction of protein oxidation in vitro by the Fenton reaction by adding FeSO4 and hydrogen peroxide solutions. The content of nonprotein sulfhydryl groups was determined after protein precipitation spectrophotometrically with 5.5'-dithio-bis-2-nitrobenzoic acid. Results. The intensity of spontaneous (basic) oxidation doesn't have significant differences between the indicators of breast and cow's milk. Significant differences were established in the content of carbonyl derivatives of amino acid residues of human and cow's milk proteins during metal-catalyzed oxidation. Incubation with iron ions caused 1.5-2.5 fold more formation of both aldehyde and ketone derivatives of cow's milk proteins, recorded in the visible and ultraviolet spectrum. In cow's milk during spontaneous oxidation and induction of oxidation by a metal, the percentage of aldehyde-dinitrophenylhydrazones was lower than in breast milk and, conversely, the proportion of ketone-dinitrophenylhydrazones, late markers of oxidative degradation of proteins, was significantly higher. The content of non-protein sulfhydryl groups in cow's milk was 2 times less than in fresh human milk. A significant excessive content of aldehyde-dinitrophenylhydrazones (2 times) and ketone-dinitrophenylhydrazones (2.6 times) undet metal-catalyzed protein oxidation of cow's milk in comparison with breast milk indicates a lower level of antioxidant reserves of cow's milk. This is confirmed by the reduced level of non-protein sulfhydryl groups. The results obtained indicate the need to improve the antioxidant status of dairy products for infant nutrition.


Assuntos
Antioxidantes , Peróxido de Hidrogênio , Aldeídos/análise , Alérgenos , Aminoácidos/análise , Animais , Antioxidantes/análise , Bovinos , Criança , Feminino , Humanos , Peróxido de Hidrogênio/análise , Lactente , Ferro , Cetonas/análise , Proteínas do Leite/análise , Leite Humano/química , Estresse Oxidativo
2.
Ter Arkh ; 93(7): 805-810, 2021 Jul 23.
Artigo em Russo | MEDLINE | ID: mdl-36286732

RESUMO

Indications of allogeneic hematopoietic stem cell transplantation (allo-HSCT) in patients with primary myelofibrosis are intermediate-2 and high-risk group of DIPSS (Dynamic International Prognostic Scoring System), beginning of the disease in childhood. The other adverse factors affect engraftment and survival after allo-HSCT, example partialy matched donor. But the result of allo-HSCT from matched related donors and result of allo-HSCT from haploidentical donors are comparable. The method for haploidentical hematopoietic stem cell transplantation is T-cell-depletion. This is clinical case of T-cell-depleted haploidentical hematopoietic stem cell transplantation in patient with primary myelofibrosis, the diagnosis was established in childhood.


Assuntos
Doença Enxerto-Hospedeiro , Transplante de Células-Tronco Hematopoéticas , Mielofibrose Primária , Humanos , Receptores de Antígenos de Linfócitos T alfa-beta , Mielofibrose Primária/diagnóstico , Mielofibrose Primária/terapia , Transplante de Células-Tronco Hematopoéticas/métodos , Antígenos CD19 , Depleção Linfocítica/métodos , Condicionamento Pré-Transplante/métodos
3.
Ter Arkh ; 88(12): 69-77, 2016.
Artigo em Russo | MEDLINE | ID: mdl-28139563

RESUMO

AIM: To evaluate the efficiency of interferon (IFN) therapy in patients with essential thrombocythemia (ET) and polycythemia vera (PV). SUBJECTS AND METHODS: A total of 61 patients (41 with ET and 20 with PV) were examined. Prior to study enrolment, 44 (72%) patients with ET or PV received one or other therapy (aspirin was not taken into account). The mean Jak2V617F mutant allele at baseline was 23% (6-54%) in the patients with ET and 40% (11-88%) in those with PV. The median time from diagnosis to enrollment was 49 months. RESULTS: The paper presents the clinical and molecular findings of long-term INF-α therapy in patients with ET or PV. The median follow-up was 52 months. Recombinant IFN-α2 showed its ability to induce complete hematologic remission (ET (76%), PV (70%)) and a complete molecular response. 22 (69%) out of 32 patients were noted to have a smaller number of cells with the Jak2V617F mutation. In the patients with PV and in those with ET, the relative reduction in the proportion of cells with the Jak2V617F mutant gene averaged 85% and 56% of the baseline values, respectively. There was a reduction in the proportion of cells expressing the Jak2V617F mutation in both the ET (from 12 to 2.2%; p=0.001) and PV (from 32.7% to 3.2%) groups (р=0.001). Ten (31%) patients achieved a deep molecular remission (≤2% Jak2V617F allele); among them, 5 patients were not found to have Jak2V617F mutation. The obtained molecular response remained in 7 of the 10 patients untreated for 11 to 86 months. The long-term treatment with IFN-α led to normalization of the morphological pattern of bone marrow in 5 of the 7 PV or ET patients. CONCLUSION: Significant molecular remissions achieved by therapy with recombinant interferon-α2 confirm the appropriateness of this treatment option in in the majority of patients with ET or PV.


Assuntos
Interferon-alfa/uso terapêutico , Janus Quinase 2 , Policitemia Vera , Trombocitemia Essencial , Adulto , Feminino , Perfilação da Expressão Gênica , Humanos , Fatores Imunológicos/uso terapêutico , Imunoterapia/métodos , Janus Quinase 2/análise , Janus Quinase 2/genética , Masculino , Pessoa de Meia-Idade , Testes Farmacogenômicos , Policitemia Vera/diagnóstico , Policitemia Vera/etiologia , Policitemia Vera/terapia , Indução de Remissão/métodos , Trombocitemia Essencial/diagnóstico , Trombocitemia Essencial/etiologia , Trombocitemia Essencial/terapia , Tempo para o Tratamento , Resultado do Tratamento
4.
Ter Arkh ; 85(8): 69-76, 2013.
Artigo em Russo | MEDLINE | ID: mdl-24137967

RESUMO

AIM: To evaluate the clinical and hematologic efficiency of splenectomy (SE) in patients with myelofibrosis (MF) resistant to conventional traditional treatment. SUBJECTS AND METHODS: Case histories were retrospectively analyzed in 52 MF patients who had been followed up at the Hematology Research Center, Ministry of Health of the Russian Federation, in 2004 to 2012 and undergone therapeutic SE (47 patients with primary myelofibrosis, 4 with postpolycythemia myelofibrosis, and 1 with postthrombocythemia myelofibrosis). The mean age was 47 years at diagnosis and 53 years before surgery. The patients younger than 50 years of age constituted 60%. Massive and giant splenomegaly was detected in 37 (71%) patients. The spleen weighing 0.9 to 2.9 and 3 to 7 kg was removed in 15 (29%) and 35 (67%) patients, respectively. In 2 cases, the weight of the removed spleen was as much as 10 and 11 kg. RESULTS: By the moment of SE, the disease duration averaged 76 (from 1 to 240) months. Twenty-one (40%) patients developed perioperative complications, including bleeding (15%), thrombosis (11.5%), and infectious complications (13.5%). There were no deaths from surgical interventions in the intra- and early postoperative periods. In more than 80% of the patients after SE, their general condition improved and the symptoms of intoxication disappeared; in the majority of patients, the therapeutic effect lasted about 2 years. In the follow-up period, 33 (63%) patients died; the time to death averaged 27 (1-84) months following SE. The causes of death were blast transformation in 27 (82%) patients and comorbidity in 6 (18%); 19 (37%) patients with an average post-SE follow-up of 37 (4-72) months continued hydroxyurea treatment. The median survival after SE was equal to 3 years; the median overall survival was 11 years. CONCLUSION: SE is effective palliative care with an acceptable level of occurring complications for individual patients with MF. Contraindications to SE as blast crisis and severe comorbidities should be strictly taken into account.


Assuntos
Complicações Intraoperatórias , Complicações Pós-Operatórias , Mielofibrose Primária/cirurgia , Esplenectomia/métodos , Esplenomegalia/cirurgia , Adulto , Idoso , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Cuidados Paliativos , Mielofibrose Primária/complicações , Mielofibrose Primária/mortalidade , Estudos Retrospectivos , Esplenectomia/efeitos adversos , Esplenectomia/mortalidade , Esplenomegalia/etiologia , Esplenomegalia/mortalidade , Resultado do Tratamento
5.
Ter Arkh ; 82(12): 47-51, 2010.
Artigo em Russo | MEDLINE | ID: mdl-21516739

RESUMO

AIM: To define an association of bone marrow microvessel density (MVD) with histological properties (the magnitude of fibrosis and quantification of megakaryocytes (MGKC)) in patients with Ph-negative chronic myeloproliferative diseases (CMPD). SUBJECTS AND METHODS: MVD was analyzed in 93 patients with different forms of CMPD, by estimating histological parameters. True polycythemia (TP) was present in 28 patients; 20 patients had essential thrombocythemia (ET), 36 had subleukemic myelosis, out them 6 were in a prefibrotic stage, and 9 with diagnosed post-TP (ET) myelofibrosis. The grade of myelofibrosis was estimated from the degree of bone marrow fibrosis as 0, 1, 2, and 3 and the clusters of MGKC were in accordance with degrees: 0, 1, and 2. MVD was studied from the absolute number of CD34-positive vascular structures. RESULTS: In patients with TP, fibrosis was defined as grade 0 and 1 in 23 (82%) and 5 (18%) cases, respectively. The content of reticulin fiber was in the normal range in 19 (95%) of the 20 patients with ET. The clusters of MGKC of grades 1 and 2 showed an even distribution among patients with ET and those with TP. Fibrosis was absent in all the patients (n = 6) with prefibrotic-stage primary myelofibrosis (PMF). The patients with PMF had high MVD values [6.5 (range 2.8-22)] than those with TP [4.0 (range 1.76-10.2)] or ET [3.7 (range 2-8.5)] and the controls [3.2 (range 2-4.1)] (p < 0.001) confirming that angiogenesis is uninvolved at the onset of disease in patients with ET and those with TP. The patients with prefibrotic-stage PMF had higher values [6.0 (range 4.8-10.6)] than those with ET [3. 7 (range 2-8.5)] (p < 0.001). This suggests that angiogenesis is an early sign preceding the development of fibrosis. CONCLUSION: Bone marrow angiogenesis assessment (from MVD measurements) may be an additional criterion for the diagnosis of disease evolution and an additional criterion between ET and PMF in a prefibrotic stage.


Assuntos
Medula Óssea/irrigação sanguínea , Microvasos/patologia , Transtornos Mieloproliferativos/diagnóstico , Adolescente , Adulto , Idoso , Doença Crônica , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Neovascularização Patológica/patologia , Reprodutibilidade dos Testes , Adulto Jovem
6.
Ter Arkh ; 81(7): 41-6, 2009.
Artigo em Russo | MEDLINE | ID: mdl-19708572

RESUMO

AIM: To analyse resistance to imatinib therapy, efficacy and safety of dasatinib. MATERIAL AND METHODS: A total of 18 patients with chronic myeloid leukemia (CML) in a chronic stage received dasatinib for 9-30 months (median 30 months) to September 2008. RESULTS: Lethal outcomes during dasatinib treatment were absent. To September 2008, 16 (89%) patients were alive, 2 (11%) patients died of the disease progression after dasatinib discontinuation. A complete clinicohematological response was observed in all the patients. Major cytogenetic, complete cytogenetic, major molecular, complete molecular responses were achieved in 12 (67%), 10 (55%), 7 (39%) and 5 (28%) patients, respectively. Hematological and non-hematological toxicity occurred in 9 (50%) patients. Now 12 (67%) patients continue dasatinib treatment, in 6 (33%) patients the drug was discontinued. CONCLUSION: The results from trials in Russian Hematological Research Center are the same as in the international study. Dasatinib is effective and well tolerated therapeutic option for imatinib-resistant patients with a chronic phase of CML.


Assuntos
Antineoplásicos/uso terapêutico , Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Tolerância a Medicamentos , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Piperazinas/uso terapêutico , Pirimidinas/uso terapêutico , Tiazóis/uso terapêutico , Adolescente , Adulto , Antineoplásicos/administração & dosagem , Antineoplásicos/efeitos adversos , Benzamidas , Dasatinibe , Intervalo Livre de Doença , Esquema de Medicação , Feminino , Humanos , Mesilato de Imatinib , Leucemia Mielogênica Crônica BCR-ABL Positiva/mortalidade , Masculino , Pessoa de Meia-Idade , Piperazinas/administração & dosagem , Piperazinas/efeitos adversos , Pirimidinas/administração & dosagem , Pirimidinas/efeitos adversos , Estudos Retrospectivos , Tiazóis/administração & dosagem , Tiazóis/efeitos adversos , Fatores de Tempo , Adulto Jovem
7.
Ter Arkh ; 80(3): 69-71, 2008.
Artigo em Russo | MEDLINE | ID: mdl-18441689

RESUMO

AIM: To compare leptin content in morphologically heterogenic group of patients with type 2 diabetes mellitus and obese patients without family history of diabetes. MATERIAL AND METHODS: Leptin concentration was estimated with enzyme immunoassay (Leptin kit Sandwish ELISA, DRG diagnostics GmdH) in 21 patients with type 2 diabetes mellitus (2DM) and 12 obese patients without family history of diabetes. Distribution of patients with a documented diagnosis type 2 diabetes mellitus was conducted with application of instruments for antropometric examination (G.P. Gneupel, Switzerland). Statistic processing was made with the program Statistica 6 using Student's t-criterion. RESULTS: Patients with diabetes mellitus and phenotypical marker of 2DM had the lowest level of leptin (mean leptin level 1.99 ng/ml in males, 11.01 ng/ml in females versus 2DM patients without the marker (mean leptin level 9.16 n/mg in males, 23.56 n/mg in females) and control group (13.86 ng/ ml in males, 22.55 ng/ml in females). CONCLUSION: There is a correlation between leptin concentration and anthropological features of the patients.


Assuntos
Diabetes Mellitus Tipo 2/sangue , Leptina/sangue , Obesidade/sangue , Biomarcadores/sangue , Índice de Massa Corporal , Diabetes Mellitus Tipo 2/complicações , Ensaio de Imunoadsorção Enzimática , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/complicações , Fatores de Risco , Índice de Gravidade de Doença
8.
Ter Arkh ; 79(8): 13-6, 2007.
Artigo em Russo | MEDLINE | ID: mdl-17926464

RESUMO

AIM: To study feasibility of hemopoiesis clonality determination in assessment of remission completeness in patients with chronic myeloid leukemia (CML) using polymerase chain reaction (PCR HUMARA). MATERIAL AND METHODS: We have examined 28 patients with newly diagnosed CML, 10 CML patients with a complete cytogenetic response (CCR) to therapy with imatinib mesilate and/or alpha-interferon, 24 healthy control females. Twelve patients with untreated CML were homozygous by HUMARA gene (human androgenic receptor gene) and were withdrawn from the study. Leukocytes of peripheral blood from all the patients were investigated with PCR HUMARA for mono- or polyclonal hemopoiesis. Clonality was defined as allele proportion (a/p) of polymorphic loci of HUMARA gene. Remission completeness was confirmed cytogenetically and by molecular methods. RESULTS: The value a/p in 10 patients with CCR varies from 0.69 to 1.33 and is similar to those in the control group. CONCLUSION: The PCR HUMARA technique adequately assesses reduction of Ph-positive clone in CML patients with CCR and points to polyclonal hemopoiesis.


Assuntos
DNA de Neoplasias/genética , Hematopoese/fisiologia , Leucemia Mielogênica Crônica BCR-ABL Positiva/sangue , Polimorfismo Genético , Receptores Androgênicos/genética , Recuperação de Função Fisiológica/genética , Adolescente , Adulto , Idoso , Alelos , Antineoplásicos/uso terapêutico , Benzamidas , Quimioterapia Combinada , Feminino , Seguimentos , Humanos , Mesilato de Imatinib , Fatores Imunológicos/uso terapêutico , Interferon-alfa/uso terapêutico , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Leucemia Mielogênica Crônica BCR-ABL Positiva/genética , Pessoa de Meia-Idade , Piperazinas/uso terapêutico , Reação em Cadeia da Polimerase , Proteínas Tirosina Quinases/antagonistas & inibidores , Pirimidinas/uso terapêutico , Receptores Androgênicos/sangue , Indução de Remissão/métodos , Resultado do Tratamento
9.
Ter Arkh ; 79(12): 57-62, 2007.
Artigo em Russo | MEDLINE | ID: mdl-18220034

RESUMO

AIM: To assess incidence of hyperhomocysteinemia (HHC) in patients with chronic myeloproliferative diseases (CMPD) and to analyse possible correlation between an elevated concentration of plasma homocystein (HC) and thrombotic complications. MATERIAL AND METHODS: The trial enrolled 61 patients: 39 CMPD patients with thrombotic complications and free of them, 22 nonhematological patients with thrombosis. The control group consisted of 40 healthy donors. The examination protocol included determination with standard methods of HC plasma concentration, platelet and plasma components of hemostasis, mutation of factor V Leiden gene, prothrombin and methylenetetrahydrofolate reductase (MTHFR). RESULTS: Mean HC concentration in the serum in CMPD patients was 19 +/- 1.7 mcmol/l which appeared higher than in healthy donors (12 +/- 1.3 mcmol/l). The highest HC was in patients with subleukemic myelosis (SLM)--23 +/- 2.3 mcmol). No difference in HC concentration in plasma was observed in CMPD carriers of homo- or heteroxygous mutation of C667T gene or CMPD patients without the mutation. In CMPD content of factor VIII was higher in HHC than in normal HC (222 +/- 26.5 and 116 +/- 20%, respectively, p = 0.002). For von Willebrand factor 202 +/- 15.6 and 120 +/- 14.6%, respectively (p < 0.003). HC reduction in response to vitamin therapy was the greater the higher its initial level was. CONCLUSION: There is correlation between HHC and thrombosis in CMPD patients. HC concentration may depend on the proliferative stage of CMPD. As HC is a significant independent factor of thrombotic complications risk, it is necessary to detect and treat HHC.


Assuntos
Fator V/metabolismo , Homocisteína/sangue , Hiper-Homocisteinemia/complicações , Transtornos Mieloproliferativos/complicações , Trombose/etiologia , Adolescente , Adulto , Biomarcadores/sangue , Doença Crônica , DNA/genética , Fator V/genética , Feminino , Seguimentos , Humanos , Hiper-Homocisteinemia/epidemiologia , Hiper-Homocisteinemia/genética , Incidência , Masculino , Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Pessoa de Meia-Idade , Transtornos Mieloproliferativos/sangue , Transtornos Mieloproliferativos/genética , Contagem de Plaquetas , Mutação Puntual , Reação em Cadeia da Polimerase , Prognóstico , Protrombina/genética , Trombose/sangue , Trombose/epidemiologia
10.
Ter Arkh ; 79(8): 17-22, 2007.
Artigo em Russo | MEDLINE | ID: mdl-17926465

RESUMO

AIM: To reveal prognostically significant factors affecting efficacy of glivek therapy in untreated (duration of the disease < or = 6 months) and pretreated (duration of the disease > 6 months) patients with chronic myeloid leukemia (CML) in a chronic phase. MATERIAL AND METHODS: A total of 338 patients (64 untreated and 274 pretreated) with a chronic-phase CML on glivek therapy entered the trial. RESULTS: Five-year survival on glivek was high (89, 98 and 88% in untreated and pretreated patients, respectively). Incidence of transformation in the acceleration phase and blast crisis was low both in untreated and pretreated patients (1.6 and 11%, respectively) and correlated with the rate of a complete cytogenetic response (CCR). Untreated patients had no factors affecting treatment efficacy negatively, CCR probability was 96%. Blastemia, thrombocytosis and splenomegaly reduced CCR probability significantly in pretreated patients. Slow reduction of the tumor mass, late achievement of a complete hematological response and a cytogenetic response decreased probability of CCR. CONCLUSION: Glivek is a drug of choice for patients with chronic-phase CML. High probability of CCR both in untreated and pretreated patients lowers the risk of the disease transformation into the phase of acceleration/blast crisis and raises overall survival in both groups.


Assuntos
Antineoplásicos/uso terapêutico , Leucemia Mieloide de Fase Crônica/tratamento farmacológico , Piperazinas/uso terapêutico , Pirimidinas/uso terapêutico , Adolescente , Adulto , Idoso , Benzamidas , Crise Blástica/epidemiologia , Crise Blástica/patologia , Progressão da Doença , Feminino , Seguimentos , Hematopoese/efeitos dos fármacos , Humanos , Mesilato de Imatinib , Incidência , Leucemia Mieloide de Fase Crônica/mortalidade , Leucemia Mieloide de Fase Crônica/patologia , Contagem de Leucócitos , Masculino , Pessoa de Meia-Idade , Prognóstico , Proteínas Tirosina Quinases/antagonistas & inibidores , Fatores de Risco , Federação Russa/epidemiologia , Taxa de Sobrevida/tendências , Fatores de Tempo
11.
Ter Arkh ; 78(10): 68-72, 2006.
Artigo em Russo | MEDLINE | ID: mdl-17180943

RESUMO

AIM: To analyse the course of pregnancy in chronic myeloproliferative diseases (CMPD) with hyperthrombocytosis, primarily, essential thrombocytemia. MATERIAL AND METHODS: The analysis of thrombogenic risk factors covered literature data and 8 cases observed by the authors. RESULTS: Six pregnant women received long-term treatment with preparations of interferon-alpha in a dose 9-20 million IU a week (both before and during pregnancy). Rapid reduction of hyperthrombocytosis (1100-4000 x 10(9) l) and the absence of a negative effect on development of the fetus were seen in all the cases. Normal delivery on week 37-39 was in 4 patients, spontaneous abortion on week 24 was provoked by a car accident. Three gravidas (gestational week 28, 33 and 34) are still under observation. Lupus anticoagulant or elevation of anticardiolipin antibodies level was detected in 4 of 8 patients, 2 patients had heterozygous mutation of methylentetrahydrofolatereductase genes and factor V (Leiden). These patients were given lannacher, faxiparine, folic acid and discrete plasmapheresis (in 2 cases). CONCLUSION: Gravidas with hyperthrombocytosis, if not contraindicated, must be treated with aspirin and interferon-alpha preparations at any gestational term. Moreover, it is necessary to exclude additional most prevalent causes of thrombophilia for adequate prevention of thromboses.


Assuntos
Transtornos Mieloproliferativos/epidemiologia , Complicações Hematológicas na Gravidez/epidemiologia , Adulto , Doença Crônica , Feminino , Humanos , Transtornos Mieloproliferativos/imunologia , Gravidez , Trombocitose/epidemiologia , Trombofilia/epidemiologia , Fator de von Willebrand/imunologia
12.
Mol Biol (Mosk) ; 28(4): 752-60, 1994.
Artigo em Russo | MEDLINE | ID: mdl-7990802

RESUMO

The 5'-leader of potato virus X (PVX) genomic RNA was successfully used to generate potato plants expressing the coat protein of the potato virus YN (Russian isolate) (PVY CP). Two expression cassettes were constructed that carried the PVY CP coding sequence along with the PVY 3'untranslated region under the control of the CaMV 35S promoter and poly(A) signal. The cassettes contained different sequences between the 35S promoter and the CP artificial AUG initiating codon of the coat protein: either a polylinker or a shortened variant of the PVX leader. Transgenic Belorusskii-3 potato plants generated by agrobacterial transformation were shown to express the PVY CP gene to different extents depending on the cassette integrated into the plant genome. The cassette containing the PVX leader provided detectable amounts of the coat protein in all tested plants, whereas plants carrying the cassette with the polylinker leader produced no coat protein above the Western detection threshold. Northern analysis revealed that the presence of the PVX leader in front of the PVY CP gene initiating codon resulted in a 10-fold increase in the PVY CP mRNA steady-state levels, thus suggesting an influence of the PVX leader on mRNA stability.


Assuntos
Regulação Viral da Expressão Gênica , Potexvirus/genética , Potyvirus/genética , Proteínas do Envelope Viral/genética , Sequência de Bases , Códon , Genes Virais , Dados de Sequência Molecular , Mutagênese Insercional , Plantas Geneticamente Modificadas , RNA Viral , Solanum tuberosum
13.
Genetika ; 38(8): 1090-6, 2002 Aug.
Artigo em Russo | MEDLINE | ID: mdl-12244693

RESUMO

To analyze the copies of the suffix short retro-element, its homologs were sought in nucleic acid sequence databases of the Drosophila melanogaster genome. The search yielded several conserved (near identical in sequence) copies, which are indicative of recent suffix transposition, and numerous divergent copies, which suggest ancient suffix transposition. Analysis of the short suffix ORF revealed a conserved protein domain, which was also found as the eighth C-terminal domain in reverse transcriptases of certain long interspersed elements (LINEs). The suffix-encoded polypeptide proved to be homologous to DNA- and RNA-recognizing domains.


Assuntos
Proteínas de Drosophila/genética , Drosophila melanogaster/genética , Retroelementos , Sequência de Aminoácidos , Animais , Elementos Nucleotídeos Longos e Dispersos , Dados de Sequência Molecular , Filogenia , Estrutura Terciária de Proteína , DNA Polimerase Dirigida por RNA/genética , Homologia de Sequência de Aminoácidos , Software
14.
Kardiologiia ; 31(8): 45-7, 1991 Aug.
Artigo em Russo | MEDLINE | ID: mdl-1795472

RESUMO

Serum lipids were studied in workers of a mining enterprise situated in mid-altitude areas who were affected by some unfavourable occupational factors (noise, vibration, dustiness, psychological and physical stresses). They were compared with those in a number- and age-matched group of employees of an instrument-making plant who resided in the plain and were unexposed to the above adverse factors. The miners were found to have greater mean levels of triglycerides and potentially atherogenic lipoprotein cholesterol. The mean lipid levels were higher with the miners' age and length of occupation whereas the duration of residence in mid-altitude areas had no noticeable influence on lipid levels.


Assuntos
Lipídeos/sangue , Mineração , Adulto , Arteriosclerose/etiologia , Colesterol/sangue , Humanos , Lipoproteínas/sangue , Masculino , Pessoa de Meia-Idade , Doenças Profissionais/etiologia , Fatores de Risco , Triglicerídeos/sangue
15.
Kardiologiia ; 29(6): 14-9, 1989 Jun.
Artigo em Russo | MEDLINE | ID: mdl-2779072

RESUMO

Examination of 166 families of the patients who had sustained myocardial infarction revealed aggregation of coronary heart disease in the families and the atherogenic shifts in the parameters of lipid turnover, which were caused by significant influences of genetic factors. The close relatives of the postinfarction patients were shown to display a large proportion of monogenic forms of hyperlipoproteinemias.


Assuntos
Doença das Coronárias/etiologia , Hiperlipidemias/genética , Hiperlipoproteinemia Tipo II/complicações , Hiperlipoproteinemia Tipo IV/complicações , Lipídeos/sangue , Adulto , Doença das Coronárias/genética , Suscetibilidade a Doenças , Humanos , Hiperlipidemias/complicações , Pessoa de Meia-Idade , Linhagem
16.
Ter Arkh ; 71(2): 67-70, 1999.
Artigo em Russo | MEDLINE | ID: mdl-10222559

RESUMO

AIM: An assessment of a hypotensive effect and tolerance of valsartan. MATERIALS AND METHODS: In 20 patients with mild and moderate blood hypertension (BH) the latter was registered sphygmomanometrically by N. S. Korotkov and by 24-h monitoring. The initial valsartan dose 80 mg/day was raised to a single daily dose 160 mg in 4 weeks in the absence of adequate correction in tolerance. RESULTS: The hypotensive effect of Diovan in a dose 80 mg/day was satisfactory or good in 80% of patients. 15% of patients needed elevation of the dose to 160 mg/day. A complete resistance occurred in 1 patient. There were neither unwanted effects nor biochemical evidence of clinically significant renal or hepatic dysfunction due to valsartan. In stable BH correction, the rate of residual hypotensive effect reached 77.4% and 74.5% for systolic and diastolic BP, respectively. CONCLUSION: High effectiveness, good tolerance and safety of valsartan in single doses 80-160 mg/day allow to recommend it in monotherapy of mild and moderate hypertension.


Assuntos
Anti-Hipertensivos/uso terapêutico , Hipertensão/tratamento farmacológico , Tetrazóis/uso terapêutico , Valina/análogos & derivados , Adulto , Idoso , Anti-Hipertensivos/efeitos adversos , Pressão Sanguínea/efeitos dos fármacos , Feminino , Frequência Cardíaca/efeitos dos fármacos , Humanos , Hipertensão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Tetrazóis/efeitos adversos , Fatores de Tempo , Valina/efeitos adversos , Valina/uso terapêutico , Valsartana
17.
Ter Arkh ; 64(2): 100-3, 1992.
Artigo em Russo | MEDLINE | ID: mdl-1387258

RESUMO

The low incidence of coronary heart disease (CHD) was established in the course of a one-stage epidemiological examination of 2562 men aged 20-54 years (a random sample from an open city population). It was found to be associated with an insignificant prevalence of lipid metabolism abnormalities (excluding hypoalphacholesterolemia) and did not depend on the nature of labour (4.3% among white collars and 4.4% among blue collars). The incidence of overweight and high AP turned out approximately identical, whereas tobacco-smoking, hypercholesterolemia and hypertriglyceridemia were mostly recorded in blue collars. The prevalence of CHD and its risk factors increased with age, excluding tobacco-smoking. In the latter case, it reduced with age.


Assuntos
Doença das Coronárias/epidemiologia , Ocupações , Adulto , Fatores Etários , Humanos , Hipercolesterolemia/epidemiologia , Hipertrigliceridemia/epidemiologia , Hipolipoproteinemias/epidemiologia , Incidência , Lipoproteínas HDL/sangue , Masculino , Pessoa de Meia-Idade , Ocupações/estatística & dados numéricos , Fatores de Risco , Federação Russa/epidemiologia , População Urbana/estatística & dados numéricos
18.
Vopr Med Khim ; 36(5): 48-53, 1990.
Artigo em Russo | MEDLINE | ID: mdl-2174587

RESUMO

Subfractional alterations of high density lipoproteins (HDL) were studied after incubation of blood serum from patients with normal lipid spectrum and with four types of dyslipidemia (hypercholesterolemia, hypertriglyceridemia, hypo- and hyper-alpha-cholesterolemia) in mixtures containing human skin fibroblasts and G-2 hepatoma cells used as typical populations of peripheric and liver cells. Incubation of normolipidemic blood sera with fibroblasts overloaded with cholesterol led to conversion of small HDL3 particles into large HDL2 subfractions arising due to the lipoprotein acception of cholesterol. At the same time, incubation of these blood sera with the hepatoma cells resulted in a decrease of the large particles ratio in total pool of HDL because of their absorption by the cells. No distinct differences were detected in formation of large particles from small subfractions when cholesterol was accepted from fibroblasts under conditions of hypercholesterolemia, hypertriglyceridemia and hyper-alpha-cholesterolemia, while formation of the largest particles HDL2b was impaired in hypo-alpha-cholesterolemia. These HDL2b particles interacted less effectively with hepatoma cells, thus suggesting the decreased cholesterol transport function of HDL in hypo-alpha-cholesterolemia. Content of HDL2b in total pool of HDL was unaltered if blood serum from patients with hyper-alpha-cholesterolemia was incubated together with the hepatoma cells. Antiatherogenic effect of hyper-alpha-cholesterolemia was caused mainly by active transfer of cholesterol from low density lipoproteins to HDL and a decrease in the LDL concentration but not by increased absorption of HDL particles by liver cells.


Assuntos
Carcinoma Hepatocelular/metabolismo , Hiperlipidemias/sangue , Lipoproteínas HDL/metabolismo , Neoplasias Hepáticas/metabolismo , Adulto , Células Cultivadas , Meios de Cultura , Fibroblastos/metabolismo , Humanos , Lipoproteínas HDL/sangue , Lipoproteínas HDL/isolamento & purificação , Masculino , Pessoa de Meia-Idade , Células Tumorais Cultivadas/metabolismo
19.
Ter Arkh ; 68(7): 22-7, 1996.
Artigo em Russo | MEDLINE | ID: mdl-8928067

RESUMO

The aim of this paper was to show the validity of programmed treatment of chronic myeloid leukemia (CML) patients regarding the risk group. In a group of low CML risk monochemotherapy (myelosan or hydroxyurea) was applied. In a group of moderate or high CML risk cytostatic therapy was performed in two variants: as monotherapy and polychemotherapy. Of 112 patients with CML, 50 received cytostatics plus long-term course of interferon-alpha. The combined treatment was well tolerated.


Assuntos
Leucemia Mielogênica Crônica BCR-ABL Positiva/terapia , Adolescente , Adulto , Antineoplásicos Alquilantes/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Bussulfano/administração & dosagem , Doença Crônica , Terapia Combinada , Feminino , Humanos , Hidroxiureia/administração & dosagem , Interferon Tipo I/administração & dosagem , Leucemia Mielogênica Crônica BCR-ABL Positiva/mortalidade , Masculino , Pessoa de Meia-Idade , Proteínas Recombinantes , Indução de Remissão , Fatores de Risco , Fatores de Tempo
20.
Ter Arkh ; 62(9): 77-83, 1990.
Artigo em Russo | MEDLINE | ID: mdl-2281413

RESUMO

The diet enriched with omega-3 polyunsaturated fatty acids (5 g/day for 4 weeks) was applied to the treatment of patients (n-22) with angina pectoris occurring for the first time. Meanwhile 6 patients received the control diet similar to the fish one as regards the protein, fat, carbohydrate, cholesterol and caloric ratio. The control group patients showed no alterations in blood lipids and apoproteins of in platelet function. The patients who received the fish diet manifested an appreciable decrease in the concentration of triglycerides (p less than 0.01), a slight reduction of cholesterol content. The level of high density cholesterol remained unchanged. There was a decrease in the concentration of thromboxane (p less than 0.05) and in the platelet count (p less than 0.05). In some patients, individual reactions of ADP-induced platelet aggregation were revealed: from the lowering (-60-10%) seen in the third of the examined up to the rise (+10+90%) in the other third. The decrease of apoprotein A1 established as safe for the protective cholesterol-transport properties of high-density lipoproteins was established.


Assuntos
Angina Pectoris/dietoterapia , Apolipoproteínas/efeitos dos fármacos , Plaquetas/efeitos dos fármacos , Gorduras Insaturadas na Dieta/uso terapêutico , Ácidos Graxos Ômega-3/uso terapêutico , Lipídeos/sangue , Adulto , Angina Pectoris/sangue , Angina Pectoris/diagnóstico , Apolipoproteínas/sangue , Plaquetas/fisiologia , Terapia Combinada , Preparações de Ação Retardada , Produtos Pesqueiros , Humanos , Masculino , Pessoa de Meia-Idade , Nitratos/uso terapêutico , Esforço Físico
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