Helicobacter pylori on oral mucosa - topographic distribution

Svrha rada bila je ispitati topografsku distribuciju bakterije Helicobacter pylori na oralnoj sluznici u upalnim, ulceroznim i keratotičnim lezijama, kandidijazi i sindromu pečenja usta i usporediti s nalazom na zdravoj sluznici. Primijenili smo nested PCR na citološkim uzorcima uzetim s 9 topografski različitih mjesta oralne sluznice i s različitih oralnih lezija. Od ukupno 426 ispitanika njih 66 (15,49 %) imalo je pozitivan nalaz H. pylori na oralnoj sluznici, bez predilekcije po spolu, ali s većom čestoćom nalaza u starijih ispitanika u usporedbi s mlađima te gotovo jednakom distribucijom na svim ispitanim topografskim stranama oralne sluznice. H. pylori otkriven je u svim ispitanim lezijama i sindromu pečenja usta osim u kandidijazi s većom prevalencijom na sluznici dorzuma jezika i u ulceroznim lezijama, premda bez statistički znatne razlike između lezija i zdrave sluznice (p = 0,059). H. pylori nije patogen za oralnu sluznicu jer kolonizira gotovo s istom čestoćom zdravu i oboljelu oralnu sluznicu. Također ne postoje preferirana mjesta na oralnoj sluznici za naseljavanje H. pylori.The purpose of this study was to examine the topographic distribution of Helicobacter pylori on oral mucosa in various oral lesions such as inflammation, oral ulceration, keratosis, candidiasis and burning mouth syndrome in comparison with healthy oral mucosa. We applied nested PCR on cytologic specimens collected from 9 topographic sites of the healthy oral mucosa and from various oral lesions. Of a total 426 patients 66 (15.49 %) were positive for H. pylori,with no predilection for sex but with higher frequency in older patients, and with almost equal distribution on all examined topographic sites of the oral mucosa. H. pylori was detected in all examined diseases, except in candidiasis, with prevalence on tongue mucosa and in ulcerous lesions although without significant differences between lesions and healthy oral mucosa (p = 0.059). H.pylori is non-pathogenic for oral mucosa since it colonizes almost with the same frequency healthy and diseased oral mucosa. There is no preferential oral site or lesion for colonization of H. pylori

Post-Traumatic Stress Disorder Patients and Periodontal Health

Progresija parodontitisa ovisi o istodobnoj pojavi nekoliko čimbenika bolesti. Osim mikroorganizama subgingivnoga plaka pokazano je da stres, promjenom odgovora domaćina, pridonosi destrukciji tkiva u parodontnoj bolesti. Ratni stres može izazvati trajne posljedice, uključujući posttraumatski stresni poremećaj (PTSP). Željeli smo ispitati prevalenciju nekih parodontnih patogena, povezanost tih mikroorganizama s kliničkim parametrima parodontitisa i utjecaj ratnoga stresa na parodontno zdravlje u pacijenata s PTSP-om. Istraživanje je provedeno na 130 ispitanika: 50 ratnih veterana oboljelih i liječenih od PTSP-a, 50 osoba s progresivnim parodontitisom (PP) i 30 parodontno zdravih osoba. Skupina s progresivnim parodontitisom uključuje oboljele od kroničnog (CO) i agresivnog (AP) parodontitisa. Jedino je skupina ratnih veterana bila neposredno izložena ratnome stresu. Proveden je potanki parodontni pregled i uzeti su uzorci subgingivne mikroflore svakog ispitanika. Klinički pregled je uključivao određivanje plak indeksa (PI), indeksa krvarećeg sulkusa (SBI), dubinu sondiranja (PD) i klinički gubitak pričvrstka (CAL). Metoda lančane reakcije polimeraze (PCR) upotrijebljena je za identifikaciju sljedećih bakterija: Actinobacillus actinomycetemcomitans(Aa), Porphyromonas gingivalis (Pg) i Eikenella corrodens (Es). Prevalencija u svim skupinama za Ec bila je 81% , za Aa 36% i za Pg 19%. Prevalencija za Ec bila je 74% u PTSP skupni, 80% u PP skupni i 93% u parodontno zdravih ispitanika. Prevalencija za Aa bila je 30% u PTSP skupini, 46% u PP skupini i 30% u parodontno zdravih ispitanika. Prevalencija za Pg bila je 16% u PTSP skupini, 16% u PP skupini i 26% u kontrolnoj skupini. S obzirom na vrstu parodontitisa prevalencija bakterija bila je : za Ec 74% u CP i 83% u AP pacijenata; za Aa 37% u CP i 39% u Ap pacijenata; za Pg 16% u CP i 18% u AP pacijnata. Ispitanici s Ec imali su niže PI, SBI i CAL vrijednosti. Oboljeli od PTSP-a imali su najveće PI i SBI vrijednosti, a bili su slični PP pacijentima po PD i CAL vrijednostima. Slična prevalencija parodontnih patogena u PTSP i PP pacijenata pokazuje da se oboljeli od PTSP-a mogu smatrati rizičnom skupinom za inicijaciju i progresiju parodontne bolesti.Progression of periodontitis depends on simultaneous occurrence of several factors of the disease. Besides subgingival plaque microorganisms, stress, through modifying host response, has been shown to contribute to tissue destruction seen in periodontal disease. War stress can cause permanent effects, including post-traumatic stress dosorder (PTSD). We wanted to study the prevalence of periodontal pathogens, association of these microorganisms with the clinical parameters of periodontitis and the influence of war stress on periodontal health in patients with PTSD. The investigation was conducted on 130 subjects: 50 war veterans diagnosed and treated for PTSD, 50 subjects with progressive periodontitis (PP) and 30 periodontally healthy subjects. The progressive periodontitis group included subjects with chronic (CP) and agressive peiodontitis (AP). Only the war veterans group has been exposed directly to war stress. Detailed periodontal examination and subgingival microbial ampling were conducted for each participant. Clinical examination included assessment of plaque index (PI), sulcus bleeding index (SBI), probing depth (PD) and clinical attachment loss (CAL). Polymerase chain reaction (PCR) was used for microbial identification of the following bacteria: Actinobacillus actinomycetemcomitans (Aa), Porphyromonas gingivalis (Pg) and Eikenella corrodens (Ec). The prevalence in all groups for Ec was 81%, for Aa 36% and for Pg 19%. Prevalence for Ec was 74% in PTSD group, 80% in PP group and 93% in periodontally healthy subjects. Prevalence for Aa was 30% in PTSD group, 46% in PP group and 30% in periodontally healthy subjects. Prevalence of Pg was 16% in PTSD group, 16% in PP group and 26% in the control gorup. Considering the periodontal diagnosis, the prevalence of bacteria was : for Ec 74% in CP and 83% in AP patients; for Aa 37% in CP and 39% in AP patients; for Pg 16% in CP and 18% in AP patients. Subjects harbouring Ec had lower PI, SBI and CAL values. PTSD patients had the highest PI and SBI values, and concerning PD an CAL were similar to PP patients. The similar prevalence of periodontal pathogens in PTSD and PP subjects indicates PTSD subjects as a risk group for periodontal disease initiation or progression

Novel Alleles of the D16S752 Polymorphic Genetic Marker Linked to E-Cadherin Gene – A Potential Population Marker

Seven DNA variants that polymorphic genetic marker D16S752 reveals in Croatian population are reported in this paper. The marker is a GATA tetranucleotide repeat linked to human E-cadherin gene (CDH1). Prior studies involving this marker revealed only four DNA allele variants. The reported DNA variants contribute to the collection of hypervariable DNA polymorphisms data useful in the field of anthropological and population genetic and forensic medicine