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Myocardial infarction is responsible for the majority of cardiovascular mortality and the pathogenesis of myocardial damage during and after the infarction involves reactive oxygen species. Serious efforts are under way to modulate the developing ischemia/reperfusion injury and recently the use of hydrogen sulfide (H2S) emerged as a new possibility. H2S has been best known for decades as a pungent toxic gas in contaminated environmental atmosphere, but it has now been recognized as a novel gasotransmitter in the central nervous and cardiovascular systems, similarly to nitric oxide (NO) and carbon monoxide (CO). This finding prompted the investigation of the potential of H2S as a cardioprotective agent and various in vitro and in vivo results demonstrate that H2S may be of value in cytoprotection during the evolution of myocardial infarction. Although several questions remain to be elucidated about the properties of this new gasotransmitter, increased H2S levels may have therapeutic potential in clinical settings in which ischemia/reperfusion injury is encountered. This review article overviews the current understanding of the effects of this exciting molecule in the setting of myocardial ischemia/reperfusion.

Open access
Developments in Health Sciences
Authors:
HJ Feith
,
Á Lehotsky
,
Á Lukács
,
E Gradvohl
,
R Füzi
,
S Darvay Mészárosné
,
I Krekó Bihariné
,
ZS Karacs
,
ZS Kiss Soósné
, and
A Falus

Purpose

The authors intended to develop a novel procedure and research method that follows the effectiveness of the peer-educational approach in handwashing among school children.

Materials and methods

To ask the children about their sociodemographic background, health behaviour, hand hygiene knowledge, and health attitudes, and questionnaires were applied. The education on proper handwashing procedures was followed by a test with a mobile UV-light detection system (Semmelweis Scanner, http://www.handinscan.com/), and the scans were evaluated through an intrinsic computer software.

Results

Our newly developed questionnaire-based research method and the hand-rubbing technique followed by a test with a mobile UV-light detection system may become a reliable and valid scientific measurement of the effectiveness of hand hygiene training programmes.

Conclusions

The Hand-in-Scan technology and questionnaire-based research method provide proper tools for evaluating the successful peer education method. It can significantly elevate the level of children’s compliance, which leads to a better hygienic consciousness.

Open access
Orvosi Hetilap
Authors:
Zoltán Zsolt Nagy
,
Huba J. Kiss
,
Ágnes I. Takács
,
Kinga Kránitz
,
Cecília Czakó
,
Tamás Filkorn
,
Árpád Dunai
,
Gábor L. Sándor
, and
Illés Kovács

Bevezetés: A szürkehályog-műtétek eredményeinek javítására kifejlesztett femtolézer-asszisztált szürkehályog-műtétek tökéletesítésére nagy energiák összpontosulnak. Célkitűzés: A femtolézer-asszisztált szürkehályog-műtétek során alkalmazott új, 2.16-os vezérlőszoftverrel és a módosított kezelési maszkkal (SoftFit®) nyert tapasztalatok értékelése. Módszer: A 2.16-os szoftvert és az új kezelési maszkot 100 páciens 100 szemén alkalmazták femtolézer-asszisztált szürkehályog-műtétek során. Eredmények: A megújult rendszerrel a femtolézeres előkezelés 45–60 másodpercre csökkent. Az új kezelési maszk kisebb mérete könnyebb illesztést tett lehetővé akár gyermekszemen is. A maszkot rögzítő szívóerő 40–50 Hgmm-ről 16–20 Hgmm-re csökkent. A subconjunctivalis suffusio aránya 40%-ról 15–20%-ra csökkent, súlyossága mérséklődött. Szaruhártyaredők nem jelentkeztek, a szabadon lebegő capsulotomiák aránya 30%-ról 97%-ra nőtt. A lézerkezeléshez szükséges energia csaknem 50%-kal csökkent. A tervezettnek megfelelő cornealis sebek könnyen megnyithatóak és pontosan záródóak voltak. Következtetések: A SoftFit® kezelési maszk és az új szoftver a femtolézer-asszisztált szürkehályog-műtétek alkalmazási lehetőségeit bővítette, lehetővé téve a gyermekkori szürkehályog-műtétekben történő alkalmazást. A fejlesztések a módszer biztonságosságát és kiszámíthatóságát tovább növelték. Orv. Hetil., 2015, 156(6), 221–225.

Open access
Physiology International
Authors:
Zs. Sári
,
T. Kovács
,
T. Csonka
,
M. Török
,
É. Sebő
,
J. Toth
,
D. Tóth
,
E. Mikó
,
B. Kiss
,
D. Szeőcs
,
K. Uray
,
Zs. Karányi
,
I. Kovács
,
G. Méhes
,
P. Árkosy
, and
P. Bai

Abstract

Breast cancer is characterized by oncobiosis, the abnormal composition of the microbiome in neoplastic diseases. The biosynthetic capacity of the oncobiotic flora in breast cancer is suppressed, as suggested by metagenomic studies. The microbiome synthesizes a set of cytostatic and antimetastatic metabolites that are downregulated in breast cancer, including cadaverine, a microbiome metabolite with cytostatic properties. We set out to assess how the protein expression of constitutive lysine decarboxylase (LdcC), a key enzyme for cadaverine production, changes in the feces of human breast cancer patients (n = 35). We found that the fecal expression of Escherichia coli LdcC is downregulated in lobular cases as compared to invasive carcinoma of no special type (NST) cases. Lobular breast carcinoma is characterized by low or absent expression of E-cadherin. Fecal E. coli LdcC protein expression is downregulated in E-cadherin negative breast cancer cases as compared to positive ones. Receiver operating characteristic (ROC) analysis of LdcC expression in lobular and NST cases revealed that fecal E. coli LdcC protein expression might have predictive values. These data suggest that the oncobiotic transformation of the microbiome indeed leads to the downregulation of the production of cytostatic and antimetastatic metabolites. In E-cadherin negative lobular carcinoma that has a higher potential for metastasis formation, the protein levels of enzymes producing antimetastatic metabolites are downregulated. This finding represents a new route that renders lobular cases permissive for metastasis formation. Furthermore, our findings underline the role of oncobiosis in regulating metastasis formation in breast cancer.

Open access