Base modification
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Alzheimer disease & associated disorders, ISSN 0893-0341 vol. 20, no. 2, suppl. 1, April-June 2006
26 s. : il., tab. ; 28 cm
- MeSH
- Alzheimerova nemoc terapie MeSH
- cholinesterasové inhibitory MeSH
- medicína založená na důkazech MeSH
- Publikační typ
- sborníky MeSH
- Konspekt
- Patologie. Klinická medicína
- NLK Obory
- neurologie
- psychiatrie
Cíl: Hodnocení laparoskopického přístupu k neoplastice pochvy.Typ studie: Retrospektivní klinická studie.Název a sídlo pracoviště: Gynekologicko-porodnická klinika, UK 2. LF a FN v Motole, Praha.Metodika: Vecchiettiho operace je jedním z mnoha postupů formování neovaginy u žen s vrozenou vaginální aplazií. V současné době je považována za optimální řešení k dosažení dostatečně prostorné pochvy pro uspokojivý pohlavní styk. Konvenční přístup je transabdominální s perioperační morbiditou příslušnou laparotomické operaci, což je považováno za největší nedostatek této metody. V posledních letech bylo popsáno několik laparoskopických technik, které řeší zmíněný problém. Jednotlivé metody se od sebe odlišují také použitím instrumentáriem pro disekci a dilataci - vlákna, zavaděč a dilatátor tvaru koule, elipsoidu či válce.Výsledky: V naší práci hodnotíme 17 úspěšně provedených operací tohoto typu, jejichž výsledky jsme měli možnost porovnat s konvenčním laparotomickým postupem, který má na našem pracovišti několikaletou tradici. Při laparoskopické modifikaci jsme dosáhli významně kratšího operačního času (48 min vs 66 min) a krevní ztráty (15 ml vs 50 - 100 ml), rovněž počet komplikací v hojení rány byl nižší. Nebyl významný rozdíl v délce hospitalizace ani velikosti vytvořené neovaginy.Závěr: Laparoskopická modifikace je bezpečným postupem, co do efektu zcela srovnatelným s klasickým laparotomických přístupem. Je určena především pracovištím se zkušenostmi ze specializované operativy a follow up na větších souborech pacientek.
Objective: To asses laparoscopic aproach to neovaginoplasty.Design: Retrospective clinical study.Setting: Department of Gynecology and Obstetrics, 2nd Medical Faculty of Charles University.Methods: Vecchietti's neovaginoplasty is considered to be the most advantageous technique of creating neovagina in vaginal agenesis, because of low perioperational morbidity and quicker recovery. Authors describe own modification of laparoscopic procedure based on designed equipment of themselves.Results: Study evaluates 17 cases of laparoscopic procedures, which are compared with clasical laparotomic approach we were experienced in past. Time of surgery was shorter (48 min vs. 66 min) and blood loss was lower (15 ml vs. 50 - 100 ml) in laparoscopic procedure. Number of complications was lower in this procedure too. There was no difference in length of hospital stay and size of neovagina.Conclusion: Laparoscopic modification is safe procedure and comparable with clasic operation as regards surgical effect. Both types of procedures are determined for workplaces with experience in special reconstructive surgery and follow-up.
- MeSH
- dospělí MeSH
- gynekologické chirurgické výkony metody MeSH
- laparoskopie metody MeSH
- lidé MeSH
- pooperační komplikace patologie MeSH
- retrospektivní studie MeSH
- vaginální onemocnění chirurgie patologie terapie MeSH
- vrozené vady chirurgie patologie terapie MeSH
- zákroky plastické chirurgie metody MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- ženské pohlaví MeSH
[1st ed.] xxvi, 628 s.
BACKGROUND: Type I restriction-modification (R-M) systems are the most complex restriction enzymes discovered to date. Recent years have witnessed a renaissance of interest in R-M enzymes Type I. The massive ongoing sequencing programmes leading to discovery of, so far, more than 1 000 putative enzymes in a broad range of microorganisms including pathogenic bacteria, revealed that these enzymes are widely represented in nature. The aim of this study was characterisation of a putative R-M system EcoA0ORF42P identified in the commensal Escherichia coli A0 34/86 (O83: K24: H31) strain, which is efficiently used at Czech paediatric clinics for prophylaxis and treatment of nosocomial infections and diarrhoea of preterm and newborn infants. RESULTS: We have characterised a restriction-modification system EcoA0ORF42P of the commensal Escherichia coli strain A0 34/86 (O83: K24: H31). This system, designated as EcoAO83I, is a new functional member of the Type IB family, whose specificity differs from those of known Type IB enzymes, as was demonstrated by an immunological cross-reactivity and a complementation assay. Using the plasmid transformation method and the RM search computer program, we identified the DNA recognition sequence of the EcoAO83I as GGA(8N)ATGC. In consistence with the amino acids alignment data, the 3' TRD component of the recognition sequence is identical to the sequence recognized by the EcoEI enzyme. The A-T (modified adenine) distance is identical to that in the EcoAI and EcoEI recognition sites, which also indicates that this system is a Type IB member. Interestingly, the recognition sequence we determined here is identical to the previously reported prototype sequence for Eco377I and its isoschizomers. CONCLUSION: Putative restriction-modification system EcoA0ORF42P in the commensal Escherichia coli strain A0 34/86 (O83: K24: H31) was found to be a member of the Type IB family and was designated as EcoAO83I. Combination of the classical biochemical and bacterial genetics approaches with comparative genomics might contribute effectively to further classification of many other putative Type-I enzymes, especially in clinical samples.
- MeSH
- bakteriální proteiny genetika metabolismus MeSH
- DNA restrikčně-modifikační enzymy genetika metabolismus MeSH
- Escherichia coli enzymologie genetika MeSH
- financování organizované MeSH
- genomika MeSH
- proteiny z Escherichia coli genetika metabolismus MeSH
- protilátky bakteriální metabolismus MeSH
- restrikční endonukleasy typu I genetika metabolismus MeSH
- sekvence nukleotidů MeSH
- sekvenční homologie nukleových kyselin MeSH
- sekvenční seřazení MeSH
- testy genetické komplementace MeSH
- MeSH
- acidobazická rovnováha MeSH
- hydrogenuhličitany MeSH
- lidé MeSH
- tělesná námaha MeSH
- Check Tag
- lidé MeSH
Autoři sledovali pomocí 24hodinového záznamu výživové zvyklosti u 148 dětí a adolescentů ve věku 4-18 let s diagnózou asthma bronchiale. Z výsledků vyplývá, že sledované děti přijímají obvykle více energie, než stanoví doporučená denní dávka (DDD). Vysoké je denní přijaté množství tuků. Byl zjištěn snížený příjem vápníku na 22-64 % normy populace, denní doporučená dávka (DDD) antioxidantních vitaminů, C i E je snížená. Vysoká je konzumace masných výrobků. Nedostatečný je přívod ovoce, zeleniny, nízkotučného mléka a mléčných výrobků. Nutriční skóre je snížené na 5,1, resp. 5,17 bodů (výživa je výborná u skóre 10 bodů). Na základě vyhodnocení je možné doporučit dětem vhodná výživová opatření.
The nutrition habits were followed by means of 24 hour recall in 148 children and adolescents aged 4-18 years with diagnosis of bronchial asthma. According to results the followed children recieve usually more energy than is determined by recommended daily dose (RDD). Daily intake of fat is very high, calcium intake is low, it is 22- 64% of population standard and the recommended daily dose of antioxidant vitamins C and E is reduced. The consumption of meat is high, while the intake of fruits, vegetables, low-fatty milk and diary products is insufficient. The nutrient score is decreased to 5.1 Resp. 5.17 points (nutrient score 10 points is indicator of excellent nutrition). It is possible to recommend the suitable nutrient measures for children as a result of evaluation.
BACKGROUND: Several studies explored the interdependence between Paco2 and bicarbonate during respiratory acid-base derangements. The authors aimed to reframe the bicarbonate adaptation to respiratory disorders according to the physical-chemical approach, hypothesizing that (1) bicarbonate concentration during respiratory derangements is associated with strong ion difference; and (2) during acute respiratory disorders, strong ion difference changes are not associated with standard base excess. METHODS: This is an individual participant data meta-analysis from multiple canine and human experiments published up to April 29, 2021. Studies testing the effect of acute or chronic respiratory derangements and reporting the variations of Paco2, bicarbonate, and electrolytes were analyzed. Strong ion difference and standard base excess were calculated. RESULTS: Eleven studies were included. Paco2 ranged between 21 and 142 mmHg, while bicarbonate and strong ion difference ranged between 12.3 and 43.8 mM, and 32.6 and 60.0 mEq/l, respectively. Bicarbonate changes were linearly associated with the strong ion difference variation in acute and chronic respiratory derangement (β-coefficient, 1.2; 95% CI, 1.2 to 1.3; P < 0.001). In the acute setting, sodium variations justified approximately 80% of strong ion difference change, while a similar percentage of chloride variation was responsible for chronic adaptations. In the acute setting, strong ion difference variation was not associated with standard base excess changes (β-coefficient, -0.02; 95% CI, -0.11 to 0.07; P = 0.719), while a positive linear association was present in chronic studies (β-coefficient, 1.04; 95% CI, 0.84 to 1.24; P < 0.001). CONCLUSIONS: The bicarbonate adaptation that follows primary respiratory alterations is associated with variations of strong ion difference. In the acute phase, the variation in strong ion difference is mainly due to sodium variations and is not paralleled by modifications of standard base excess. In the chronic setting, strong ion difference changes are due to chloride variations and are mirrored by standard base excess.
- MeSH
- acidobazická rovnováha * MeSH
- chloridy farmakologie MeSH
- hydrogenuhličitany * MeSH
- koncentrace vodíkových iontů MeSH
- lidé MeSH
- psi MeSH
- sodík farmakologie MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- psi MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- metaanalýza MeSH
Cellulose-based biomaterials are safe and ordinarily used in human medicine. Owing to its properties, cellulose is still in the biomaterial research spotlight, mainly in wound dressing area. The review brings an overview of chemical and physical means of cellulose modification that have been done so far, particularly to improve material properties and to introduce antibacterial properties. The most frequent antibacterial finishing of cellulose-based materials is the modification with silver that is effective against broad spectrum of bacteria species and has low risk of resistance development. A special subchapter is therefore dedicated to the antibacterial effect of silver.
- Klíčová slova
- fyzikální modifikace, chemická modifikace,
- MeSH
- antibakteriální látky klasifikace terapeutické užití MeSH
- biokompatibilní materiály * klasifikace MeSH
- celulosa * analogy a deriváty chemie klasifikace MeSH
- lidé MeSH
- oxidace-redukce MeSH
- plazmové plyny klasifikace MeSH
- rány a poranění ošetřování MeSH
- regenerativní lékařství MeSH
- sloučeniny stříbra terapeutické užití MeSH
- stříbro terapeutické užití MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- práce podpořená grantem MeSH
- přehledy MeSH
Establishment of the early genetic code likely required strategies to ensure translational accuracy and inevitably involved tRNA post-transcriptional modifications. One such modification, wybutosine/wyosine is crucial for translational fidelity in Archaea and Eukarya; yet it does not occur in Bacteria and has never been described in mitochondria. Here, we present genetic, molecular and mass spectromery data demonstrating the first example of wyosine in mitochondria, a situation thus far unique to kinetoplastids. We also show that these modifications are important for mitochondrial function, underscoring their biological significance. This work focuses on TyW1, the enzyme required for the most critical step of wyosine biosynthesis. Based on molecular phylogeny, we suggest that the kinetoplastids pathways evolved via gene duplication and acquisition of an FMN-binding domain now prevalent in TyW1 of most eukaryotes. These findings are discussed in the context of the extensive U-insertion RNA editing in trypanosome mitochondria, which may have provided selective pressure for maintenance of mitochondrial wyosine in this lineage.
- MeSH
- guanosin analogy a deriváty biosyntéza chemie metabolismus MeSH
- mitochondrie enzymologie MeSH
- posttranskripční úpravy RNA MeSH
- protozoální proteiny genetika metabolismus MeSH
- RNA transferová chemie metabolismus MeSH
- Trypanosoma brucei brucei enzymologie genetika MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Research Support, N.I.H., Extramural MeSH