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1.
Int J Food Microbiol ; 387: 110049, 2023 Feb 16.
Artículo en Inglés | MEDLINE | ID: mdl-36521239

RESUMEN

Klebsiella pneumoniae is the most common Klebsiella species infecting animals and is one of the causing agents of mastitis in cows. The rise of antimicrobial resistance in K. pneumoniae, particularly in strains producing extended-spectrum ß-lactamases (ESBLs) and/or carbapenemases, is of concern worldwide. Recently (Regulation UE No 2022/1255), carbapenems and cephalosporins in combination with ß-lactamase inhibitors have been reserved only to human treatments in the European Union. The aim of this study was to investigate the role of cattle as carrier of human pathogenic carbapenem-resistant (CR) and ESBL-producing K. pneumoniae. On this purpose, a study involving 150 dairy farms in Parma province (Northern Italy) and 14 non replicate K. pneumoniae isolates from patients admitted at Parma University-Hospital was planned. Four multidrug resistant (MDR) K. pneumoniae strains were detected from 258 milk filters collected between 2019 and 2021. One carbapenemase KPC-3-positive K. pneumoniae ST307 (0.4 %; 95 % CI - 0.07 - 2.2) was detected in milk filters. The isolate also harboured OXA-9, CTX-M-15 and SHV-106 determinants, together with genes conferring resistance to aminoglycosides (aac(3')-IIa, aph (3″)-Ib, aph (6)-Id), fluoroquinolones (oqxA, oqxB, qnrB1), phosphonic acids (fosA6), sulphonamides (sul2), tetracyclines (tet(A)6) and trimethoprim (dfrA14). One KPC-3-producing K. pneumoniae ST307 was identified also among the human isolates, thus suggesting a possible circulation of pathogens out of the clinical settings. The remaining three bovine isolates were MDR ESBL-producing K. pneumoniae characterized by different genomic profiles: CTX-M-15, TEM-1B and SHV-187 genes (ST513); CTX-M-15 and SHV-145 (ST307); SHV-187 and DHA-1 (ST307). Occurrence of ESBL-producing K. pneumoniae in milk filters was 1.2 % (95 % CI 0.4-3.4). All the isolates showed resistance to aminoglycosides, 3rd-generation cephalosporins, and fluoroquinolones. Among the human isolates, two multidrug resistant ESBL-producing K. pneumoniae ST307 were found, thus confirming the circulation of this high-risk lineage between humans and cattle. Our findings suggest that food-producing animals can carry human pathogenic microorganisms harboring resistance genes against carbapenems and 3rd-generation cephalosporins, even if not treated with such antimicrobials. Moreover, on the MDR K. pneumoniae farms, the antimicrobial use was much higher than the Italian median value, thus highlighting the importance of a more prudent use of antibiotics in animal productions.


Asunto(s)
Klebsiella pneumoniae , Leche , Animales , Bovinos , Femenino , Humanos , Aminoglicósidos , Antibacterianos/farmacología , beta-Lactamasas/genética , Carbapenémicos/farmacología , Cefalosporinas , Fluoroquinolonas , Klebsiella pneumoniae/genética , Klebsiella pneumoniae/aislamiento & purificación , Pruebas de Sensibilidad Microbiana , Leche/microbiología
2.
J Stomatol Oral Maxillofac Surg ; 122(5): 499-504, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-32827811

RESUMEN

The AAOMS in 2014 changed from BRONJ to the term Medication-Related Osteonecrosis of the Jaw (MRONJ), because of the growing number of osteonecrosis cases associated with other antiresorptive and antiangiogenic therapies. Even if the drugs involved are different, the histopathological findings are the same. Colonies of Actinomyces are encountered in most cases. The aim of the present study is to report on Actinomyces prevalence among the cases of MRONJ, taking into consideration also antiresorptive and antiangiogenic therapies in the literature and in our sample between 2005 and 2020. The review was performed using the database Medline the linkage between Actinomyces infection and MRONJ. The retrospective study was conducted on patients between with clinical and radiological manifestations of MRONJ May 2005 and February 2020. A total of 42 articles were found, 30 publications have been taken into consideration for the review. A total of 114 patients have been examined at the Padua Hospital. A total of 101 oncological patients presented the histological confirmation of MRONJ. 83 specimens revealed the presence of Actinomyces infection (82.18%). Actinomyces-associated lesions are frequent and present a wide spectrum of clinical manifestation.


Asunto(s)
Osteonecrosis de los Maxilares Asociada a Difosfonatos , Conservadores de la Densidad Ósea , Actinomyces , Difosfonatos , Humanos , Estudios Retrospectivos
3.
J Biol Regul Homeost Agents ; 34(6 Suppl. 2): 77-87, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33541067

RESUMEN

The aim of present study is a macro evaluation of adjustment to allow homeostasis before and after frenectomy. Macro analysis was done on 7 pediatric patients tested firstly simple surface elettromyography (EMG) to evaluate masticatory muscles, secondly the Romberg's test to assess the posture and thirdly cephalometric analysis according to Giannì and Rocabado to assess orthodontic variations. The frenectomy was performed with diode laser (wavelength 890 nm). Pre-frenectomy EMG outcomes indicate a clear masticatory muscular imbalance with a different electrical activity compared to physiological standard values and functional basal balance. Results after frenectomy EMG show a normalization of basal values with an improvement of mandibular posture. Depending on cephalometric analysis, outcomes reveal a tendency to normalize the cervical lordosis, previously altered. Ultimately, pre-frenectomy Romberg's test shows initial instability in the static posture, which decreases after frenectomy. In conclusion, the short lingual fraenum not only has static correlations with the oral cavity but also dynamic connections with the cervical posture and muscular basal organization. So, homeostasis includes macro alterations involving muscular tone and bone position. Frenectomy could favor the restoration of the basal eutonia achieved by a natural homeostasis.


Asunto(s)
Homeostasis , Láseres de Semiconductores , Frenillo Lingual/cirugía , Cefalometría , Niño , Electromiografía , Humanos , Postura
4.
Int J Food Microbiol ; 289: 162-167, 2019 Jan 16.
Artículo en Inglés | MEDLINE | ID: mdl-30245289

RESUMEN

Resistance to new generation cephalosporins is an important public health problem globally, in terms of economic and social costs, morbidity and mortality. Βeta-lactamase enzymes are mainly responsible for the antibiotic resistance of Gram negative bacteria and extended-spectrum-ß-lactamases (ESßLs) are one of the major determinants of resistance against oxymino-cephalosporins in Enterobacteriaceae. Food-producing animals represent one of the sources of antibiotic resistant bacteria, including pigs. Here we analysed the presence of E. coli resistant to III generation cephalosporins isolated from different matrices collected from intensively bred pigs. A total of 498 E. coli were isolated from faeces and carcasses of pigs at slaughterhouse as well as from pork meat and sausages. Among these, 73 were phenotypically confirmed to be ESßL producers. Genetic analysis revealed that all except two harboured at least one of the three selected genes: blaCTX-M, blaTEM, and blaSHV. Furthermore, six of the E. coli ESßL isolated from faeces and carcasses swabs, were also able to produce biofilm, highlighting the virulence potential of these strains. The presence of Multi-Drug-Resistance patterns (MDR) recorded by the 73 ESßL E. coli was significant (60% of the strains were resistant to more than six antibiotics in MIC test). Results from the present study show that the transmission of resistant bacteria is possible along the food chain, including production of pork, one the most highly consumed meats around the world. Transmission is possible through the ingestion of raw meat products, and following cross-contamination between raw and cooked foods during preparation. The potential risk for human health demonstrated here, associated with the consumption of pork contaminated with bacterial strains characterized by multidrug resistance patterns, and the ability to produce ESßL and biofilm, is cause for concern. It is imperative to study future control strategies to avoid or limit as much as possible the transmission of these highly pathogenic strains through food consumption and/or contact with the environment.


Asunto(s)
Biopelículas , Escherichia coli/genética , Microbiología de Alimentos , Porcinos/microbiología , Animales , Escherichia coli/clasificación , Escherichia coli/crecimiento & desarrollo , Escherichia coli/aislamiento & purificación , Manipulación de Alimentos , Genes Bacterianos/genética , Humanos , Fenotipo , Carne Roja/microbiología , beta-Lactamasas/genética
5.
Oral Dis ; 24(6): 1141-1142, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-29688598
6.
Vet Parasitol ; 243: 125-129, 2017 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-28807281

RESUMEN

Toxoplasma gondii is considered one of the most important food-borne parasitic zoonoses globally and sheep are important intermediate hosts of the parasite. Meat and milk from infected sheep are considered an important source of infection for humans. Here, the authors evaluated T. gondii infection in the Italian Cornigliese sheep breed using meat juice ELISA, and in vitro assay for followed by Real Time-PCR and PCR-RFLP. Twenty-one hearts were collected at slaughter. Meat juice serology was carried out on all samples, while eleven hearts with the highest antibody titres were subjected to acid-peptic digestion and seeding onto Vero cells. DNA was extracted at three different time points following seeding. PCR-positive samples were then genotyped by PCR-RFLP. All the meat juice samples were positive for IgG antibodies against p30 protein of T. gondii. Five of the 11 samples, seeded onto Vero cells, were positive in PCR made on DNA extracted after 21days of culture and the PCR-RFLP revealed a Type-II or Type II variant profile at 9/10 loci. Two out of five samples showed an increase in terms of parasite growth by comparing the Cq values at three different time points. To the authors' knowledge, this is the first report of in vitro cultivation of T. gondii from muscle tissue of naturally-infected sheep. In vitro assays may be a promising alternative to bioassays and further studies are necessary in order to improve assay performance and to identify possible early markers of parasite proliferation.


Asunto(s)
Carne/parasitología , Enfermedades de las Ovejas/parasitología , Toxoplasma/genética , Toxoplasmosis Animal/diagnóstico , Animales , Chlorocebus aethiops , ADN Protozoario , Genotipo , Corazón/parasitología , Italia/epidemiología , Músculo Esquelético/parasitología , Reacción en Cadena en Tiempo Real de la Polimerasa , Ovinos , Enfermedades de las Ovejas/epidemiología , Toxoplasma/aislamiento & purificación , Células Vero
7.
Int J Oral Maxillofac Surg ; 46(11): 1490-1496, 2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-28716472

RESUMEN

The aim of this case series study was to illustrate the bone lid technique implemented using piezoelectric surgery to access mandibular alveolar bone diseases and to assess the clinical and radiographic outcomes. The technique was used to treat 21 consecutive patients with various conditions: cysts in six cases, impacted teeth with associated cysts in nine, keratocystic odontogenic tumours in three, impacted teeth in two, and an endodontic lesion in one. The bone lid was fashioned using piezoelectric surgery and a thin osteotomy insert. After the surgical procedure, the bone lid was replaced and fixed with miniplates. On clinical and radiological follow-up at 12 months, the outcome measures were bone lid integration and alveolar bone volume recovery. Any complications were also documented. The lesion and bone lid healed completely in 19 cases; one patient experienced permanent mild paresthesia and one experienced trauma-induced bone lid necrosis. Computed tomography volumetric analyses conducted on 11 cases indicated a mean recovery of 93.8% of the volume of bone lost. Based on healthy biological reasoning, the bone lid technique with piezoelectric surgery and rigid fixation may be considered a valid alternative to ostectomy for the purposes of bone tissue healing.


Asunto(s)
Proceso Alveolar/cirugía , Enfermedades de la Boca/cirugía , Procedimientos Quirúrgicos Orales/métodos , Piezocirugía/métodos , Adolescente , Adulto , Anciano , Placas Óseas , Femenino , Humanos , Masculino , Persona de Mediana Edad , Enfermedades de la Boca/diagnóstico por imagen , Osteotomía , Complicaciones Posoperatorias , Tomografía Computarizada por Rayos X , Resultado del Tratamiento
8.
Oral Dis ; 23(1): 62-68, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-27543905

RESUMEN

OBJECTIVE: This randomized, double-blind, placebo-controlled crossover study assessed the efficacy of topical tocopherol acetate compared with placebo in easing oral discomfort in patients with reticular oral lichen planus (ROLP). MATERIALS AND METHODS: Thirty-four patients with clinically diagnosed and histologically confirmed ROLP were randomly assigned to two groups, which received first one of two treatments (treatment 1 or 2) for a month, then the other (treatment 2 or 1) for another month, with a two-week washout between them. One treatment contained tocopherol acetate and the other only liquid paraffin. The primary outcome was less discomfort, measured on a visual analog scale (VAS). Secondary outcomes were as follows: length of striae measured and photographed at each follow-up; surface area of lesions; and a modified Thongprasom score. RESULTS: No statistically significant differences emerged between the two treatments (1 vs 2) in terms of VAS scores (P > 0.05; 0.8624) or length of striae (P = 0.0883). Significant differences were seen for surface area of lesions (P < 0.05, P = 0.0045) and modified Thongprasom scores (P = 0.0052). CONCLUSION: The two treatments differed only in terms of the surface area of the lesions and Thongprasom scores, not in VAS scores for discomfort or the length of patients' striae. Topical tocopherol proved effective in the treatment of ROLP.


Asunto(s)
Tocoferoles/uso terapéutico , Administración Tópica , Adulto , Estudios Cruzados , Método Doble Ciego , Femenino , Humanos , Liquen Plano Oral/tratamiento farmacológico , Masculino , Dimensión del Dolor , Tocoferoles/administración & dosificación
9.
Minerva Stomatol ; 64(6): 295-307, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26486204

RESUMEN

AIM: Anxiety is a relevant problem in dental practice. The Modified Dental Anxiety Scale (MDAS) is a brief, simple questionnaire consisting of five questions with a total score ranging from 5 to 25, the Italian version of which is not available yet. The aim of the study was to provide an Italian version of the MDAS and check its reliability in oral surgery, which is a major cause of dental anxiety due to the expected perception of pain and suffering. METHODS: The Italian version of the test was administered to 230 patients (98 male and 132 female patients, ages 14-88 years) undergoing oral surgery. Further recorded data were: American Society of Anaesthesiologists physical status classification (ASA-PS), frequency of visiting the dentist and any previous distressing experiences in dental or medical setting. RESULTS: The internal consistency of the test was high, with a Cronbach's alpha=0.92. The MDAS score was significantly higher in females (P<0.0001) and in patients with previous distressing experiences in medical and/or dental settings (P<0.0001); the correlation with age (P=0.01) and frequency on visiting the dentist (P=0.02) were also significant. CONCLUSIONS: The patients' selection (oral surgery only) may be a limit of the study, which might not provide an estimation of anxiety prevalence in the general dental population; however our result agree with those of studies performed in other Countries in the generic population, suggesting the absence of major differences with respect to the surgical setting and show the reliability and manageability of the Italian version of MDAS.


Asunto(s)
Ansiedad al Tratamiento Odontológico/diagnóstico , Procedimientos Quirúrgicos Orales/psicología , Inventario de Personalidad , Encuestas y Cuestionarios , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Ansiedad al Tratamiento Odontológico/psicología , Atención Odontológica/estadística & datos numéricos , Análisis Factorial , Miedo , Femenino , Humanos , Italia , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Factores Sexuales , Traducciones , Adulto Joven
10.
Vet Rec Open ; 2(1): e000061, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26392887

RESUMEN

INTRODUCTION: Ruminants are regarded as the natural reservoir for Shiga toxin-producing Escherichia coli (STEC), especially of serogroup O157. MATERIALS AND METHODS: During 2011 and 2012, 320 samples (160 faecal samples from the rectum and 160 hide samples from the brisket area) were collected from 160 cattle at slaughter in Northern Italy during warm months (May to October). Cattle were reared in different farms and their age at slaughter ranged between nine months and 15 years, most of them being culled cattle (median age: six years; average age: 4.6 years). Samples were tested by immunomagnetic-separation technique for E coli O157 and O26 and by a screening PCR for stx genes followed by cultural detection of STEC. The virulence genes stx1, stx2, eae, and e-hlyA were detected and among stx2-positive isolates the presence of the stx2a and stx2c variants was investigated. RESULTS: Twenty-one of 160 cattle (13.1 per cent; 95 per cent CI 8.3 to 19.4 per cent) were found to be faecal carriers of STEC. STEC O157 was found in 10 (6.3 per cent) samples, STEC O26 in six (3.8 per cent) and STEC O111 in one (0.6 per cent). Four isolates (2.5 per cent) were O not determined (OND). Six out of 160 (3.8 per cent; 95 per cent CI 1.4 to 8.0 per cent) hide samples were positive for STEC; four hides (2.5 per cent) were contaminated by STEC O157 and two (1.3 per cent) by STEC O26. In three cattle (1.9 per cent) STEC from both faeces and hides were detected. Among STEC O157, 87.5 per cent of them carried the stx2c gene and 12.5 per cent carried both stx1 and stx2c genes. No O157 isolate harboured stx2a variant. STEC O26 and O111 carried the stx1 gene only. One OND strain carried both the stx2a and stx2c genes. CONCLUSIONS: This study shows that STEC O157 from cattle can harbour the stx2c variant, which is associated with haemolytic uraemic syndrome in humans, and that cattle hides may be a source of human pathogenic STEC O157 and O26 in the slaughterhouse environment.

11.
Minerva Stomatol ; 2015 Jul 14.
Artículo en Inglés | MEDLINE | ID: mdl-26173721

RESUMEN

AIM: Anxiety is a relevant problem in dental practice. The Modified Dental Anxiety Scale (MDAS) is a brief, simple questionnaire consisting of five questions with a total score ranging from 5 to 25, the Italian version of which is not available yet. The aim of the study was to provide an Italian version of the MDAS and check its reliability in oral surgery, which is a major cause of dental anxiety due to the expected perception of pain and suffering. METHODS: The Italian version of the test was administered to 230 patients (98 male and 132 female patients, ages 14-88 years) undergoing oral surgery. Further recorded data were: American Society of Anaesthesiologists physical status classification (ASA-PS), frequency of visiting the dentist and any previous distressing experiences in dental or medical setting. RESULTS: The internal consistency of the test was high, with a Cronbach's alpha=0.92. The MDAS score was significantly higher in females (p<0.0001) and in patients with previous distressing experiences in medical and/or dental settings (p<0.0001); the correlation with age (p=0.01) and frequency on visiting the dentist (p=0.02) were also significant. CONCLUSIONS: The patients' selection (oral surgery only) may be a limit of the study, which might not provide an estimation of anxiety prevalence in the general dental population; however our result agree with those of studies performed in other Countries in the generic population, suggesting the absence of major differences with respect to the surgical setting and show the reliability and manageability of the Italian version of MDAS.

12.
Vet Parasitol ; 209(3-4): 285-8, 2015 Apr 30.
Artículo en Inglés | MEDLINE | ID: mdl-25770851

RESUMEN

Ovine hydatidosis (OH; Echinococcus granulosus) is endemic in several European countries surrounding the Mediterranean basin. There have been a limited number of studies aimed at evaluating the local immune response to established tissue cysts in the ovine host. In the present study, immunohistochemical analysis of lymphocyte populations surrounding established cysts showed a predominance of CD3+ T cells compared to CD79+ B cells. A percentage of infiltrating lymphocytes were also FoxP3+, suggesting that established ovine cysts may be protected from immune aggression through the suppressive action of T regulatory cells. The present study contributes to the understanding of local immune responses to ovine echinococcosis.


Asunto(s)
Equinococosis/veterinaria , Enfermedades de las Ovejas/parasitología , Linfocitos T/fisiología , Animales , Equinococosis/inmunología , Equinococosis/patología , Ovinos , Enfermedades de las Ovejas/inmunología , Enfermedades de las Ovejas/patología
13.
Int J Food Microbiol ; 202: 54-6, 2015 Jun 02.
Artículo en Inglés | MEDLINE | ID: mdl-25771511

RESUMEN

Twenty-one free ranging pigs from three organically managed farms in northern Italy were examined for Toxoplasma gondii infection status by meat juice serology. DNA was extracted from all 21 animals and analysed for T. gondii by multilocus nested PCR-RFLP. Results showed a 95.2% prevalence in serology, while PCR was positive in 57.1% of infected pigs. Genotyping of amplified loci for Type I, Type II and Type I/II patterns, suggests the presence of more than one clonal genotype in circulation in these animals. Results of the present study highlight the high exposure to T. gondii in organic pig farms in Italy, indicating a potential risk for meat consumption.


Asunto(s)
Toxoplasma/fisiología , Toxoplasmosis Animal/diagnóstico , Animales , Ensayo de Inmunoadsorción Enzimática , Genotipo , Italia/epidemiología , Carne/parasitología , Reacción en Cadena de la Polimerasa , Polimorfismo de Longitud del Fragmento de Restricción , Prevalencia , Porcinos , Enfermedades de los Porcinos/diagnóstico , Enfermedades de los Porcinos/epidemiología , Enfermedades de los Porcinos/parasitología , Toxoplasma/genética , Toxoplasma/aislamiento & purificación , Toxoplasmosis Animal/epidemiología , Toxoplasmosis Animal/parasitología
14.
Burns ; 41(3): e41-6, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25716757

RESUMEN

Oral burns in pediatric patient are commonly due to electrical injuries, representing an important reconstructive issue even for functional than esthetic reason. Different classification, surgical management and even oral device were described to allow the best long-term result. In most case a multidisciplinary approach is necessary to achieve a satisfactory outcome. A severe case of pediatric oral burn with germinative teeth damage is presented, describing a multispecialist team approach that guarantee a satisfactory outcome by reconstructive surgery, careful progressive evaluation of dental and soft tissue healing and speech recovery. The use of acellular dermal substitute template within traditional reconstructive surgery had provided a good functional and esthetic result joint to valid preservation of germinative dental element as shown at long-term X-ray evaluation. Intensive rehabilitation speech program has also avoided phonetic impairment in an important speech develop period. It was so evident that the necessity of a multispecialist care in such difficult injury to achieve the best long-term result.


Asunto(s)
Quemaduras por Electricidad/cirugía , Traumatismos Faciales/cirugía , Boca/cirugía , Grupo de Atención al Paciente , Procedimientos de Cirugía Plástica/métodos , Mejilla/lesiones , Mejilla/cirugía , Femenino , Encía/lesiones , Encía/cirugía , Humanos , Lactante , Labio/lesiones , Labio/cirugía , Boca/lesiones , Piel Artificial , Habla , Lengua/lesiones , Lengua/cirugía
15.
Vet Parasitol ; 205(1-2): 208-10, 2014 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-25027611

RESUMEN

In a previous study, dogs experimentally infected with Dirofilaria immitis were treated with either ivermectin or doxycycline or a combination of both. The adulticide effect was significantly higher in the dogs treated with both drugs and was similar to that observed in dogs treated with melarsomine hydrochloride. In the present study, lung tissue samples from these dogs were evaluated for the presence of T regulatory (Foxp3+) cells by immunohistochemistry. Cells were enumerated for each dog in the four groups and compared with untreated controls. There was a significantly lower number of Treg cells in those dogs treated with a combination of both drugs when compared either to the control group or to the other groups treated with either drug alone or with melarsomine. These results suggest that successful adulticide effects of doxycycline and ivermectin are associated with a decrease in immune regulation towards the parasite.


Asunto(s)
Dirofilaria immitis , Dirofilariasis/tratamiento farmacológico , Enfermedades de los Perros/parasitología , Doxiciclina/uso terapéutico , Ivermectina/uso terapéutico , Linfocitos T Reguladores/fisiología , Animales , Antibacterianos/administración & dosificación , Antibacterianos/uso terapéutico , Antiparasitarios/administración & dosificación , Antiparasitarios/uso terapéutico , Enfermedades de los Perros/tratamiento farmacológico , Perros , Doxiciclina/administración & dosificación , Quimioterapia Combinada , Ivermectina/administración & dosificación , Pulmón/citología
16.
Int J Food Microbiol ; 184: 45-9, 2014 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-24495690

RESUMEN

The aim of this study was to monitor the presence of Shiga toxin (Stx)-producing Escherichia coli in dairy farms authorized to sell raw milk and other farms, located in the same area, which sell milk to industry or use it to produce Parmesan or Grana cheese. Our research was focused on the serogroups O157 and O26, which are the most common in human cases in Italy and genetic markers that characterize the strains that can cause hemorrhagic colitis and hemolytic uremic syndrome (EHEC) in humans. Overall, 255 bulk-milk and 225 milk filter samples were screened for the presence of Shiga toxin genes (stx1 and stx2), O157 and O26 serogroups by using PCR. The samples were collected in 193 bovine dairy farms located in Northern Italy, including 32 farms selling raw milk to consumers. According to the preliminary PCR screening test, 32 out of 255 (12.5%; CI95%, 8.7% to 17.3%) bulk milk samples and 68 out of 225 (30.2%; CI95%, 24.3% to 36.7%) milk filters were positive for stx genes. Of the 32 milk samples that were stx-positive, 4 (1.6%, CI95%, 0.4% to 4%) were also positive by PCR for the rfbEO157 gene and 6 (2.4%, CI95%, 0.9% to 5.1%) were positive for the wzxO26 gene. The culture detection method, which was based on the immunomagnetic separation, achieved isolation rates of E. coli serogroups O157 and O26 in 25-67% of the milk samples that tested positive by PCR for these serogroups. STEC O26 was detected in one milk filter (1.6%) from a farm that sells raw milk to consumers directly and one sample (1.4%) of bulk milk intended for pasteurization. The presence of STEC O157 was also detected in 2 milk filters (1.7%) from farms that use milk to produce Grana cheese. All the STEC stains O157 and O26 isolated carried the genes eae and espK and genes belonging to the pathogenicity island OI-122 (efa1/2, sen, pagC), which are markers suitable for screening the human virulent EHEC strains. These virulence markers were also detected in the three strains of stx-negative E. coli O157 isolated from two filters and one milk sample. These strains could be therefore EHEC strains that have lost the stx genes (EHEC-derivative strains). Concern arise for the presence of EHEC O26 and E. coli O157 isolates that are suspected to be an EHEC-derivative in the milk filters sampled in farms that are used to sell raw milk to consumers and in other dairy farms.


Asunto(s)
Microbiología de Alimentos , Leche/microbiología , Escherichia coli Shiga-Toxigénica/aislamiento & purificación , Animales , Bovinos , Industria Lechera , Proteínas de Escherichia coli/genética , Italia , Reacción en Cadena de la Polimerasa/métodos , Toxina Shiga/genética
17.
Minerva Anestesiol ; 79(12): 1389-95, 2013 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23860442

RESUMEN

BACKGROUND: Anxiety is a relevant but still underscored perioperative problem. The Visual Analogue Scale for Anxiety (VAS-A) seems to be effective, fast and manageable, but has not been fully validated yet. The aim of this study is to validate VAS-A comparing it to, Corah's Dental Anxiety Scale (CDAS) Spielberger's State Trait Anxiety Inventory (STAI) and Beck Depression Inventory (BDI). METHODS: One hundred consecutive patients (38 males and 62 females, median age 49 years) submitted to oral surgery filled out the VAS-A, CDAS, STAI forms Y1 and Y2, and BDI at preoperative examination; the order of administration of tests was randomized. RESULTS: VAS-A score was significantly correlated to CDAS (P<0.0001), STAI-Y1 (P<0.0001), STAI-Y2 (P<0.002) but not to BDI (P=0.18). ROC curve analysis suggested VAS-A equal to 46 mm as threshold for anxiety when using STAI Y1 equal to 40 as reference cutoff. CONCLUSION: Our study confirms that VAS-A is a reliable indicator of preoperative anxiety and may detect patients with depressive symptoms also. Values of VAS-A around 50 mm are a reliable threshold for a clinically meaningful level of preoperative anxiety.


Asunto(s)
Ansiedad/diagnóstico , Ansiedad/psicología , Pruebas Neuropsicológicas , Cuidados Preoperatorios , Escala Visual Analógica , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Cirugía Bucal/psicología
18.
Minerva Stomatol ; 61(7-8): 337-40, 2012.
Artículo en Inglés, Italiano | MEDLINE | ID: mdl-22976517

RESUMEN

Breakage of a local anesthetic needle in dentistry is a rare but potentially serious event. Here we describe a case of breakage of a hypodermic needle during administration of local anesthesia with a Vazirani-Akinosi mandibular nerve block in a 5-year-old uncooperative patient under moderate sedation with midazolam. The needle was localized using a fluoroscopy device and then removed under general anaesthesia. The postoperative course was unremarkable, without any neurological or vascular deficits.


Asunto(s)
Anestesia Local/instrumentación , Cuerpos Extraños/cirugía , Nervio Mandibular , Mucosa Bucal/lesiones , Agujas , Bloqueo Nervioso/instrumentación , Bloqueo Nervioso/métodos , Preescolar , Falla de Equipo , Humanos , Masculino
19.
Minerva Stomatol ; 60(7-8): 365-81, 2011.
Artículo en Inglés, Italiano | MEDLINE | ID: mdl-21709652

RESUMEN

AIM: Bispectral Index Score (BIS) is an objective tool to assess sedation depth. Benzodiazepines have different pharmacological profiles and diazepam may be safer than midazolam in this setting. The aim of this study was to compare BIS values observed during anxiolysis after diazepam versus sedation after midazolam. METHODS: Thirty-six patients were randomly assigned to 3 groups: group 1 was treated with i.v. diazepam, groups 2 and 3 with iv midazolam 1 and 3 mg, respectively. Sedation was monitored clinically and by means of BIS. BIS values were evaluated as area under the curve (AUC) and compared by variance analysis. The statistical comparison of other data was performed by variance analysis or, alternatively, the χ2 according to Yates. The statistical significance was indicated by P values <0.05. RESULTS: AUC values were significantly lower after midazolam when compared to AUC values registered in diazepam treated patients; 22.6% of the group 3 patients showed BIS values <80, versus 0.4% of group 1 patients. CONCLUSION: Diazepam has a safer profile, with BIS values and clinical conditions according to the definition of minimal and/or moderate sedation. Diazepam represents the safer drug for anxiety management in dentistry, because regularly produces a state of sedation during which verbal contact with the patient is maintained and carry a margin of safety wide enough to render loss of consciousness unlikely.


Asunto(s)
Ansiolíticos/farmacología , Sedación Consciente/métodos , Monitores de Conciencia , Estado de Conciencia/efectos de los fármacos , Diazepam/farmacología , Electroencefalografía , Hipnóticos y Sedantes/farmacología , Midazolam/farmacología , Adulto , Amnesia Anterógrada/inducido químicamente , Ansiolíticos/administración & dosificación , Ansiolíticos/efectos adversos , Benzodiazepinas/administración & dosificación , Benzodiazepinas/farmacología , Sedación Consciente/efectos adversos , Sedación Profunda/efectos adversos , Diazepam/administración & dosificación , Diazepam/efectos adversos , Relación Dosis-Respuesta a Droga , Electroencefalografía/efectos de los fármacos , Femenino , Humanos , Hipnóticos y Sedantes/administración & dosificación , Hipnóticos y Sedantes/efectos adversos , Masculino , Midazolam/administración & dosificación , Midazolam/efectos adversos , Persona de Mediana Edad , Nordazepam/administración & dosificación , Nordazepam/análogos & derivados , Nordazepam/farmacología , Procedimientos Quirúrgicos Orales , Dolor/prevención & control , Dolor/psicología , Encuestas y Cuestionarios , Inconsciencia/inducido químicamente
20.
Anesth Prog ; 58(1): 8-13, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21410359

RESUMEN

Anxiety is a relevant problem in dental practice. The Visual Analogue Scale for Anxiety (VAS-A), introduced in dentistry in 1988, has not yet been validated in large series. The aim of this study is to check VAS-A effectiveness in more than 1000 patients submitted to implantology. The VAS-A and the Dental Anxiety Scale (DAS) were administered preoperatively to 1114 patients (459 males and 655 females, age 54.7 ± 13.1 years). Statistical analysis was conducted with Pearson correlation coefficient, the receiver operating characteristic (ROC) curve, and McNemar tests. A close correlation between DAS and VAS-A was found (r  =  0.57, P < .0001); the VAS-A thresholds of dental anxiety and phobia were 5.1 and 7.0 cm, respectively. Despite a significant concordance of tests in 800 cases (72%), disagreement was found in the remaining 314 cases (28%), and low DAS was associated with high VAS-A (230 cases) or vice versa (84 cases). Our study confirms that VAS-A is a simple, sensitive, fast, and reliable tool in dental anxiety assessment. The rate of disagreement between VAS-A and DAS is probably due to different test sensitivities to different components of dental anxiety. VAS-A can be used effectively in the assessment of dental patients, using the values of 5.1 cm and 7.0 cm as cutoff values for anxiety and phobia, respectively.


Asunto(s)
Ansiedad al Tratamiento Odontológico/clasificación , Área Bajo la Curva , Femenino , Humanos , Masculino , Persona de Mediana Edad , Curva ROC , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Índice de Severidad de la Enfermedad
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