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Iuliano A, Nowacka M, Rybak K, Rzepna M. The effects of electron beam radiation on material properties and degradation of commercial PBAT/PLA blend. J Appl Polym Sci 2020. [DOI: 10.1002/app.48462] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- A. Iuliano
- Faculty of ChemistryWarsaw University of Technology Noakowskiego 3, 00‐664 Warsaw Poland
- Department of Chemistry, Faculty of Food SciencesWarsaw University of Life Sciences—SGGW Nowoursynowska 159c, 02‐776 Warsaw Poland
| | - M. Nowacka
- Department of Food Engineering and Process Management, Faculty of Food SciencesWarsaw University of Life Sciences—SGGW Nowoursynowska st. 159c, 02‐776 Warsaw Poland
| | - K. Rybak
- Department of Food Engineering and Process Management, Faculty of Food SciencesWarsaw University of Life Sciences—SGGW Nowoursynowska st. 159c, 02‐776 Warsaw Poland
| | - M. Rzepna
- Institute of Nuclear Chemistry and Technology Dorodna 16 Warsaw 03‐195 Poland
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Herc AS, Wlodarska M, Nowacka M, Bojda J, Szymanski W, Kowalewska A. Supramolecular interactions between polylactide and model cyclosiloxanes with hydrogen bonding-capable functional groups. EXPRESS POLYM LETT 2020. [DOI: 10.3144/expresspolymlett.2020.12] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wiktor A, Nowacka M, Anuszewska A, Rybak K, Dadan M, Witrowa-Rajchert D. Drying Kinetics and Quality of Dehydrated Cranberries Pretreated by Traditional and Innovative Techniques. J Food Sci 2019; 84:1820-1828. [PMID: 31206662 DOI: 10.1111/1750-3841.14651] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 12/01/2022]
Abstract
The aim of this study was to analyze the impact of traditional and combined pretreatment on dehydration kinetics and quality of dried swamp cranberries. Fruits were blanched, cut, or treated by combined technique consisting of blanching and application of pulsed electric field. Afterwards, fruits were subjected for osmotic dehydration (OD; 72 hr) in 61.5% sucrose solution or in ternary solution consisting of 30% sucrose with 0.1% addition of steviol glycosides to ensure similar sweetness of both mixtures. In the case of samples treated by combined method, OD was enhanced during first 30 min by sonication. Partially dehydrated cranberries were air dried at 70 °C. The quality of dehydrated fruits was assessed by the means of phenolics content, anthocyanin content, flavonoid content, vitamin C content, water activity, and color. Blanching decreased drying time by 48% to 50% in comparison to cutting. Utilization of combined method reduced drying time of cranberries up to 55% in comparison to cut samples. Water activity of all samples was below 0.6. Blanched samples or blanched and then treated with pulsed electric field and ultrasound contained more anthocyanins and flavonoids and less sucrose than cut samples. PRACTICAL APPLICATION: According to current trends in food and beverage industry, consumers seek for products which does not contain excessive amounts of sugars, salt, or fats. Dried cranberry fruits are rich in bioactive compounds and need to be osmotically dehydrated in sugar solutions to make the taste of the final product acceptable. Osmotic dehydration is also carried out to decrease time of drying, which is one of the most energy intensive processes. Therefore, there is a need to develop a technology with potential to maintain the bioactive compounds, reduce sugar content in comparison to traditionally process fruits, and enhance the kinetics of drying.
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Affiliation(s)
- A Wiktor
- Dept. of Food Engineering and Process Management, Faculty of Food Sciences, Warsaw Univ. of Life Sciences (WULS-SGGW), Warsaw, Poland
| | - M Nowacka
- Dept. of Food Engineering and Process Management, Faculty of Food Sciences, Warsaw Univ. of Life Sciences (WULS-SGGW), Warsaw, Poland
| | - A Anuszewska
- Dept. of Food Engineering and Process Management, Faculty of Food Sciences, Warsaw Univ. of Life Sciences (WULS-SGGW), Warsaw, Poland
| | - K Rybak
- Dept. of Food Engineering and Process Management, Faculty of Food Sciences, Warsaw Univ. of Life Sciences (WULS-SGGW), Warsaw, Poland
| | - M Dadan
- Dept. of Food Engineering and Process Management, Faculty of Food Sciences, Warsaw Univ. of Life Sciences (WULS-SGGW), Warsaw, Poland
| | - D Witrowa-Rajchert
- Dept. of Food Engineering and Process Management, Faculty of Food Sciences, Warsaw Univ. of Life Sciences (WULS-SGGW), Warsaw, Poland
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Nowacka M, Tappi S, Tylewicz U, Luo W, Rocculi P, Wesoły M, Ciosek-Skibińska P, Dalla Rosa M, Witrowa-Rajchert D. Metabolic and sensory evaluation of ultrasound-assisted osmo-dehydrated kiwifruit. INNOV FOOD SCI EMERG 2018. [DOI: 10.1016/j.ifset.2018.08.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Nowacka M, Tylewicz U, Tappi S, Siroli L, Lanciotti R, Romani S, Witrowa-Rajchert D. Ultrasound assisted osmotic dehydration of organic cranberries (Vaccinium oxycoccus): Study on quality parameters evolution during storage. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.05.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Nowacka M, Rybak K, Wiktor A, Mika A, Boruszewski P, Woch J, Przybysz K, Witrowa-Rajchert D. The quality and safety of food contact materials – paper and cardboard coated with paraffin emulsion. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.06.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Nowacka M, Tylewicz U, Romani S, Dalla Rosa M, Witrowa-Rajchert D. Influence of ultrasound-assisted osmotic dehydration on the main quality parameters of kiwifruit. INNOV FOOD SCI EMERG 2017. [DOI: 10.1016/j.ifset.2017.02.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kowalewska A, Nowacka M, Włodarska M, Zgardzińska B, Zaleski R, Oszajca M, Krajenta J, Kaźmierski S. Solid-state dynamics and single-crystal to single-crystal structural transformations in octakis(3-chloropropyl)octasilsesquioxane and octavinyloctasilsesquioxane. Phys Chem Chem Phys 2017; 19:27516-27529. [DOI: 10.1039/c7cp05233b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Thermally induced formation of symmetric crystal lattices in functional POSS proceeds via different mechanisms and results in unique reversible phenomena.
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Affiliation(s)
- A. Kowalewska
- Centre of Molecular and Macromolecular Studies
- Polish Academy of Sciences
- 90-363 Łódź
- Poland
| | - M. Nowacka
- Centre of Molecular and Macromolecular Studies
- Polish Academy of Sciences
- 90-363 Łódź
- Poland
| | - M. Włodarska
- Institute of Physics
- Lodz University of Technology
- 90-924 Łódź
- Poland
| | - B. Zgardzińska
- Department of Nuclear Methods
- Institute of Physics
- Maria Curie-Sklodowska University
- 20-031 Lublin
- Poland
| | - R. Zaleski
- Department of Nuclear Methods
- Institute of Physics
- Maria Curie-Sklodowska University
- 20-031 Lublin
- Poland
| | - M. Oszajca
- Jagiellonian University
- Faculty of Chemistry
- 30-060 Kraków
- Poland
| | - J. Krajenta
- Centre of Molecular and Macromolecular Studies
- Polish Academy of Sciences
- 90-363 Łódź
- Poland
| | - S. Kaźmierski
- Centre of Molecular and Macromolecular Studies
- Polish Academy of Sciences
- 90-363 Łódź
- Poland
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Nowacka M, Tylewicz U, Laghi L, Dalla Rosa M, Witrowa-Rajchert D. Effect of ultrasound treatment on the water state in kiwifruit during osmotic dehydration. Food Chem 2014; 144:18-25. [DOI: 10.1016/j.foodchem.2013.05.129] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Revised: 04/29/2013] [Accepted: 05/28/2013] [Indexed: 11/16/2022]
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Belanger-Quintana A, Dokoupil K, Gokmen-Ozel H, Lammardo AM, MacDonald A, Motzfeldt K, Nowacka M, Robert M, van Rijn M, Ahring K. Diet in phenylketonuria: a snapshot of special dietary costs and reimbursement systems in 10 international centers. Mol Genet Metab 2012; 105:390-4. [PMID: 22217429 DOI: 10.1016/j.ymgme.2011.12.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Revised: 12/06/2011] [Accepted: 12/06/2011] [Indexed: 10/14/2022]
Abstract
BACKGROUND AND AIMS To gather exploratory data on the costs and reimbursement of special dietary foods used in the management of phenylketonuria (PKU) from ten international specialist PKU centers. METHODS Experts from each center provided data on retail costs of the three most frequently used phenylalanine-free protein substitutes and low-protein foods at their center; reimbursement of protein substitutes and low-protein foods; and state monetary benefits provided to PKU patients. RESULTS The mean annual cost of protein substitutes across 4 age groups (2 y, 8 y, 15 y and adults) ranged from €4273 to €21,590 per patient. The cost of low-protein products also differed; the mean cost of low-protein bread varied from €0.04 to €1.60 per 100 kcal. All protein substitutes were either fully reimbursed or covered by health insurance. However, reimbursement for low-protein products varied and state benefits differed between centers. CONCLUSIONS The variation in the cost and reimbursement of diet therapy and the level of additional state benefits for PKU patients demonstrates the large difference in expenditure on and access to PKU dietary products. This highlights the inequality between healthcare systems and access to special dietary products for people with PKU, ultimately leading to patients in some countries receiving better care than others.
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Affiliation(s)
- A Belanger-Quintana
- Unidad de Enfermedades Metabolicas, Servicio de Pediatría, Hospital Ramón y Cajal, Madrid, Spain
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Ahring K, Bélanger-Quintana A, Dokoupil K, Gokmen-Ozel H, Lammardo AM, MacDonald A, Motzfeldt K, Nowacka M, Robert M, van Rijn M. Blood phenylalanine control in phenylketonuria: a survey of 10 European centres. Eur J Clin Nutr 2010; 65:275-8. [DOI: 10.1038/ejcn.2010.258] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bik-Multanowski M, Didycz B, Mozrzymas R, Nowacka M, Kaluzny L, Cichy W, Schneiberg B, Amilkiewicz J, Bilar A, Gizewska M, Lange A, Starostecka E, Chrobot A, Wojcicka-Bartlomiejczyk BI, Milanowski A. Quality of life in noncompliant adults with phenylketonuria after resumption of the diet. J Inherit Metab Dis 2008; 31 Suppl 2:S415-8. [PMID: 18956249 DOI: 10.1007/s10545-008-0978-7] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2008] [Revised: 09/10/2008] [Accepted: 09/11/2008] [Indexed: 10/21/2022]
Abstract
BACKGROUND Discontinuation of dietary therapy in adults with phenylketonuria can lead to neuropsychological abnormalities and emotional problems. The aim of our study was to assess the change in quality of life in adult patients returning to the diet and to define the reasons for failure in diet resumption. METHODS Quality of life was assessed by means of the Psychological General Well-Being Index before study entry and subsequently after 3 and 9 months. Reasons for failure in diet resumption were analysed. RESULTS 53 patients participated in the study. Initial quality of life assessment revealed severe distress in 17%, moderate distress in 28% and positive well-being in 55% of them. In the majority of patients with severe or moderate distress, improvement of subjective well-being was observed (especially in the domains of anxiety and depressiveness) if they managed to return to the diet (blood phenylalanine concentrations before study entry 0.78-1.62 mmol/L, mean 1.16 mmol/L; average blood phenylalanine concentration decrease by 0.42 mmol/L). Only 29 persons managed to maintain the diet for at least 3 months and only 10 participants finished the entire 9-month study protocol. Problems with dietary treatment while at work, the high cost of low-protein products and poor knowledge regarding proper diet were the most important factors responsible for failure in resumption of diet. CONCLUSION Interpersonal differences exist between adult patients on relaxed diet, in some of whom quality of life often remains good, while others can suffer from severe emotional distress. Returning to diet increases quality of life in the majority of patients.
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Affiliation(s)
- M Bik-Multanowski
- Chair of Pediatrics, Jagiellonian University, ul. Wielicka 265, 30-663, Krakow, Poland.
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Bik-Multanowski M, Mozrzymas R, Nowacka M, Borawska-Kowalczyk U, Lange A, Starostecka E, Didycz B, Kaluzny L, Gizewska M, Szynaka E, Szymczakiewicz-Multanowska A. Use of handheld computers for assessment of prefrontal cortex function in patients with phenylketonuria. Mol Genet Metab 2005; 86 Suppl 1:S142-4. [PMID: 16165388 DOI: 10.1016/j.ymgme.2005.06.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2005] [Revised: 06/23/2005] [Accepted: 06/24/2005] [Indexed: 11/20/2022]
Abstract
Assessment of prefrontal brain cortex function can be helpful in treatment monitoring in patients with phenylketonuria. We aimed to assess the usefulness of computerized neuropsychological tests developed for handheld computers for this purpose. We observed worse test performance among persons with blood phenylalanine concentrations exceeding the recommended range. Use of handheld computers was assessed by patients and by doctors as interesting, not time-consuming and convenient. This method can be helpful during routine follow-up visits.
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Affiliation(s)
- M Bik-Multanowski
- Department of Pediatrics, Jagiellonian University, ul. Wielicka 265, 30-663 Kraków, Poland.
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Zekanowski C, Nowacka M, Radomyska B, Cabalska B. Should newborn mutation scanning for hyperphenylalaninaemia and galactosaemia be implemented? A Polish experience. J Med Screen 2002; 8:132-6. [PMID: 11678552 DOI: 10.1136/jms.8.3.132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To elucidate whether screening for mutations causing hyperphenylalaninaemia (HPA) and classic galactosaemia could provide important, additional information on a clinical phenotype. METHOD Genotypes that cause disease at the phenylalanine hydroxylase (PAH) gene and galactose-1-phosphate uridyltransferase (GALT) gene in a group of 101 hyperphenylalaninaemic and 77 patients with classic galactosaemia were established. The PAH and GALT mutations were identified in genomic DNA extracted from whole blood leucocytes using single stranded conformational analysis and direct fluorescent sequencing of polymerase chain reaction (PCR) products. RESULTS Mild HPA and mild phenylketonurea (PKU) were caused by divergent genotypes. In the studied group a total of 26 different mild and intermediate PAH mutations were identified, most of them being rare ones. Classic galactosaemia was caused by two frequent mutations, accounting for 82% of all mutated alleles. CONCLUSIONS Identification of mild or intermediate mutations causing HPA could provide fast and reliable information about future clinical outcome of a newborn infant. Molecular diagnosis of HPA should be preceded by biochemical analysis and implemented to differentiate mild forms of HPA and cases of ambiguous classification. Because of multiple rare mutations scattered on all exons, scanning of the entire PAH coding sequence could be useful and cost beneficial. Routine genotyping is not proposed in classic phenylketonuria and classic galactosaemia, as it provides limited additional, prospective information on the clinical phenotype.
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Affiliation(s)
- C Zekanowski
- Department of Medical Genetics, National Research Institute of Mother and Child, Warszawa, Poland.
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Ciechanowski K, Borowiak KS, Potocka BA, Nowacka M, Dutkiewicz G. Chlorpropamide toxicity with survival despite 27-day hypoglycemia. J Toxicol Clin Toxicol 2000; 37:869-71. [PMID: 10630272 DOI: 10.1081/clt-100102468] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
CASE REPORT In the past 5 years at our institution, 12 cases involving the ingestion of chlorpropamide 3-15 g were fatal. We report a 23-year-old woman with an estimated ingestion of chlorpropamide 5-10 g. Initial cardiovascular collapse, attributed to the blockade of potassium channel transport, responded to intensive support including 3 days of cardiac pacing. Urinary excretion of chlorpropamide and hypoglycemia persisted until day 27. The toxic mechanisms and high risk of chlorpropamide are summarized. A fatal therapeutic dose ratio as low as 4:1 has made this antidiabetic agent obsolete.
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Cabalska B, Nowacka M, Laskowska-Klita T, Nowaczewska I, Zorska K, Taljański W. [Serum tyrosine in children with phenylketonuria and mild hyperphenylalaninemia]. Med Wieku Rozwoj 2000; 4:5-12. [PMID: 11013857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Serum tyrosine concentration, Phe/Tyr scores and psychomotor/mental development scores were analysed in 32 children with phenylketonuria (PKU) and 39 with mild hyperphenylalaninaemia. Observation period included the first 6 years of life. Tendency to tyrosine deficiency was observed; stronger in dietary treated PKU patients than in those with mild hyperphenylalaninaemia. Statistically significant differences between patient groups were found only in 3 and 6 years old children (lower tyrosine values in PKU patients). It was observed that evaluation of Phe/Tyr score value might be usefull in differentiation between PKU and mild hyperphenylalaninaemia. Moreover, the above score may help in the evaluation of hypo- and hyperalimentation state in the course of dietary treatment. The level of tyrosine deficiency in the analysed patient groups did not influence their normal intellectual development.
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Affiliation(s)
- B Cabalska
- Klinika Pediatrii, Instytut Matki i Dziecka w Warszawie
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Zekanowski C, Nowacka M, Gizewska M, Filipowicz J, Cabalska B, Bal J. Mutations in exon 3 of the PAH gene causing mild hyperphenylalaninemia. Genet Test 1999; 3:297-9. [PMID: 10495930 DOI: 10.1089/109065799316626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Phenylketonuria (PKU), an autosomal recessive disorder caused by a deficiency of hepatic phenylalanine hydroxylase (PAH), is clinically very heterogeneous. On molecular level more than 350 mutations in the PAH gene are known to date, which in different genotype combinations could account for biochemical and clinical variability. Mutations located in exon 3 coding for a part of the regulatory domain of the PAH enzyme cause classical PKU, mild PKU, and mild hyperphenylalaninemia (MHP). We describe the phenotypic effects of seven mutations in exon 3 of the PAH gene (R68G, R68S, R71H, S87R, P89S, I95F, and A104D). We propose that mutations located between amino acid positions 71 through 94 cause MHP.
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Affiliation(s)
- C Zekanowski
- Department of Genetics, National Research Institute of Mother and Child, Warszawa, Poland.
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Zekanowski C, Nowacka M, Cabalska B, Sendecka E, Słowik M, Gizewska M, Filipowicz J, Mazurczak T, Bal J. [Mutations causing hereditary hyperphenylalaninemia]. Med Wieku Rozwoj 1999; 3:55-66. [PMID: 10910639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Mutations in the genes encoding different parts of phenylalanine hydroxylation system cause persistent hyperphenylalaninaemia. The most frequent form of hyperphenylalaninaemia is caused by mutations in the PAH gene. The most common variant result from defect of tetrahydrobiopterin synthase. Mutations in the PAH and PTS genes in the Polish population are presented. Genotype--phenotype correlations are discussed.
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Affiliation(s)
- C Zekanowski
- Klinika Pediatrii, Hematologii, Onkologii i Endokrynologii, Akademia Medyczna w Gdańsku
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Abstract
The major cause of the different forms of hyperphenylalaninaemia (HPA) is mutations in the gene encoding phenylalanine hydroxylase (PAH). The aim of this study was to determine the mutations responsible for mild forms of HPA and to relate different clinical phenotypes of HPA patients to their PAH genotypes. Four "mild" mutations, including the most frequent A403V and R297H mutations, occurred exclusively in mild hyperphenylalaninaemia (MHP). Mutations A104D, R243Q, R241H, and Y414C were detected in patients with mild phenylketonuria (mild PKU) only. These results may be useful in establishing a molecular differential diagnosis for PAH deficiency in Poland.
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Affiliation(s)
- C Zekanowski
- Department of Genetics, National Research Institute of Mother and Child, Warszawa, Poland
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Liwo A, Jeziorek D, Ossowski T, Dyl D, Tempczyk A, Tarasiuk J, Nowacka M, Borowski E, Woźnicki W. Molecular modeling of singlet-oxygen binding to anthraquinones in relation to the peroxidating activity of antitumor anthraquinone drugs. Acta Biochim Pol 1995. [DOI: 10.18388/abp.1995_4898] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Anthraquinone derivatives are important anti-cancer drugs possessing, however, undesirable peroxidating and, in consequence, cardiotoxic properties. This results from the mediation by these compounds of the one-electron reduction processes of the oxygen molecule, which produces the highly toxic superoxide anion radical and other active oxygen species. This article summarizes the results of our studies on the molecular aspects of the mechanism of anthraquinone-mediated peroxidation which were carried out using enzymatic-assay, electrochemical, and quantum-mechanical methods.
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Zekanowski C, Nowacka M, Zgulska M, Horst J, Cabalska B, Mazurczak T. Frequencies of the most common mutations responsible for phenylketonuria in Poland. Mol Cell Probes 1994; 8:323-4. [PMID: 7870074 DOI: 10.1006/mcpr.1994.1044] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We screened 91 Polish phenylketonuric (PKU) children for the presence of 18 common mutations in the phenylalanine hydroxylase (PAH) gene, and 75.7% of PAH alleles were identified. The R408W mutation accounted for 54.9% of PAH mutant alleles. In the other 20.8%, eight mutations were detected: R158Q (6.6%), IVS10 (4.9%), IVS12 (2.7%), R261Q (2.2%), G272ter (1.65%), Y414C (1.1%), R252W (1.1%) and P281L (0.54%). Correlations between genotype and clinical phenotype were described.
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Affiliation(s)
- C Zekanowski
- Department of Genetics, National Research Institute of Mother and Child, Warszawa, Poland
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Abstract
The effect of exposure to cold (+2 degrees C, 3 and 24 h) and fasting (1, 2 and 3 days) on placental glycogen and triglyceride content was investigated in rats pregnant for 20 days. The stimuli did not affect the level of glycogen in the placenta. The level of triglycerides remained unchanged in the rats exposed to cold. It rose after only one day of fasting and then levelled out on the 2nd and 3rd days. Fasting, but not exposure to cold produced hypoglycemia and elevation of the plasma free fatty acids level. We conclude that activation of the adrenergic system during exposure to cold does not interfere with the glycogen and triglyceride content of the placenta. Prolonged hypoglycemia also does not affect the placental glycogen level although it increases the accumulation of neutral fat.
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Affiliation(s)
- J Górski
- Department of Physiology, Medical School, Białystok, Poland
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Nowacka M, Górski J. Metabolic response to starvation in late pregnant rats. I. Maternal response. Acta Physiol Pol 1988; 39:427-34. [PMID: 3257055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The aim of the present study was to examine effect of prolonged fasting on muscle glycogen and triglyceride concentration as well as on non-protein nitrogen excretion with urine in late pregnant rats. They were divided into four groups: I--fed, pregnant for 21 days, II--fasted for one day (from 20 to 21 day of pregnancy), III--fasted for two days (from 19 to 21 day) and IV--fasted for three days (from 18 to 21 day). The concentration of glycogen and triglycerides was determined in the following tissues: the white and red layers of the vastus lateralis, the soleus, the diaphragm, the heart and the liver. The urine was collected in each group 24 h (from 20 to 21 day). It has been found that concentration of glycogen in the leg muscles is reduced by about 50% and in the diaphragm by 75% already after 24 h fasting and then remains stable. The concentration of glycogen in the heart increases after one day of fasting and then returns to the control value. The effect of fasting on the concentration of triglycerides in the tissues depends on a tissue studied. It decreases gradually in the white vastus, and in the soleus only on the third day. It is elevated during the first two days of fasting in the red vastus, diaphragm and liver and returns to the control level on the third day. The fasting doubled the concentration of triglycerides in the heart. The urinary urea, creatinine, and uric acid excretion decreases and ammonia excretion increases during fasting. The results obtained indicate that the late gestation does not alter response of muscle glycogen metabolism to fasting as compared to the male rats. It does effect metabolism of triglycerides.
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Affiliation(s)
- M Nowacka
- Department of Clinical Physiology, School of Medicine, Białystok
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Górski J, Nowacka M, Namiot Z, Puch U. Effect of prolonged exercise on the level of triglycerides in the rat liver. Eur J Appl Physiol Occup Physiol 1988; 57:554-7. [PMID: 3396571 DOI: 10.1007/bf00418461] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This study examined the effect of prolonged exercise on the level of triglycerides (TG) in rat liver. The rats were divided into groups: 1-control, 2-treated with nicotinic acid, 3-fed with glucose during exercise, 4-fasted, 5-adrenalectomized, 6-adrenalectomized and fed with oil. In the control group, there was gradual accumulation of TG in the liver and their level was doubled at exhaustion as compared to the resting value. Nicotinic acid lowered the resting level of TG and prevented their accumulation during exercise. Administration of glucose during exercise partially prevented the increase in TG level in the liver. In rats fasted for 24 h before exercise, the net increase in liver TG level during exercise was similar to that in the controls. Adrenalectomy, like nicotinic acid, lowered TG level at rest and prevented its increase during exercise. Feeding the adrenalectomized rats with oil elevated the plasma free fatty acid level but did not result in accumulation of TG in the liver, either at rest or during exercise. It is concluded that prolonged exercise results in accumulation of TG in the liver and that the process depends on the supply of free fatty acids and glucose and requires the presence of glucocorticoids.
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Affiliation(s)
- J Górski
- Department of Physiology, Medical School, Białystok, Poland
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Górski J, Nowacka M, Namiot Z, Kiryluk T. Effect of exercise on energy substrates metabolism in tissues of adrenalectomized rats. Acta Physiol Pol 1987; 38:331-7. [PMID: 3452970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Effect of adrenalectomy and exercise on skeletal muscle, heart and liver glycogen and triglycerides, blood glucose and plasma free fatty acid level has been studied in the rat. It has been found that exercise-induced mobilization of glycogen in vastus deepest and soleus was diminished whereas utilization of liver glycogen was accelerated in adrenalectomized rats as compared to sham-operated controls. Triglyceride content in vastus deepest was reduced and in the liver increased in control rats but remained stable during exercise in adrenalectomized rats. In the latter group hypoglycemia occurred earlier and was more pronounced, whereas plasma free fatty acid level was markedly lower than in the control group.
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Affiliation(s)
- J Górski
- Department of Clinical Physiology, Medical School, Sniadecki District Hospital, Białystok
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Majkowska-Przybył M, Wieczorek U, Pastok B, Nowacka M. [Diagnosis of Mycoplasma pneumoniae infection in chronic respiratory tract diseases]. Pneumonol Pol 1984; 52:539-42. [PMID: 6535110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Nowacka M, Lubieńska B, Bartkowska G. [Drug resistance of bacteria isolated from patients with chronic nonspecific broncho-pulmonary diseases]. Pneumonol Pol 1979; 47:611-7. [PMID: 119214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Kostowski W, Nowacka M. Influence of some adrenal steroids on hexobarbital and hydroxydione anaesthesia. Arch Int Pharmacodyn Ther 1970; 184:362-5. [PMID: 4393843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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