Nucleotide sequence and transfer properties of two novel types of Actinobacillus pleuropneumoniae plasmids carrying the tetracycline resistance gene tet(H)

17 p.The aim of this study is to analyze the sequence and transfer properties of two tetracycline resistance plasmids found in clinical isolates of Actinobacillus pleuropneumoniae in order to assert their role in the spread of tetracycline resistenceS

Antimicrobial susceptibility patterns of Haemophilus parasuis from pigs in the United Kingdom and Spain

18 p.A total of 30 British and 30 Spanish Haemophilus parasuis isolates were tested for their susceptibility to 19 of the antimicrobials currently used in swine practice with a broth microdilution method in order to know the emergence of resistance against these compounds in this porcine pathogen. All the British isolates were susceptible to penicillin, ceftiofur, erythromycin, tilmicosin, enrofloxacin, and florfenicol, and most of them were susceptible to the remaining antimicrobials (the highest resistance rate found was of 20% to neomycin). In contrast, all the Spanish isolates were susceptible exclusively to florfenicol, and high proportions of resistance were encountered for penicillin, ampicillin, oxytetracycline, erythromycin, tilmicosin, tiamulin and trimethoprim + sulphamethoxazole; in addition, a bimodal or multimodal distribution, or tailing of Spanish isolates over the MIC range was observed for clindamycin, sulphonamides and tylosine tartrate, suggesting the development of acquired resistance. In addition, several multiresistance patterns were found among the Spanish isolates, 23.3% of them being resistant to at least eight antimicrobials, the same rate as that encountered for those being susceptible to all antimicrobials tested. This study showed that in general British H. parasuis isolates are susceptible to antimicrobial agents routinely used for treatment of porcine respiratory diseases; however, the Spanish isolates need a more continuous surveillance of their susceptibility patternsS

Molecular characterization of Haemophilus parasuis ferric hydroxamate uptake (fhu) genes and constitutive expression of the FhuA receptor

P. 49-59Bacteria have evolved a set of highly specialized proteins to capture iron in irondepleted environments. The acquisition and uptake of iron present in the extracellular milieu of eukaryotic organisms is indispensable for the growth and survival of microbial pathogens in the course of infection. Haemophilus parasuis is the causative agent of Glässer disease, which is responsible for considerable financial losses in pig-rearing worldwide. To gain insight into the mechanisms involved in siderophore-mediated iron uptake in H. parasuis, genes in the H. parasuis ferric hydroxamate uptake (Fhu) region were amplified in the work being reported here. As has been described in A. pleuropneumoniae, an Fhu genomic region was also present in H. parasuis, being composed of four potential consecutive open reading frames (ORF) designated as fhuC, fhuD, fhuB, and fhuA, respectively. By immunoblotting, using a cross-reactive polyclonal antibody raised against Actinobacillus pleuropneumoniae FhuA protein, it was demonstrated that this protein was constitutively expressed in H. parasuis and its level of expression was not modified under conditions of restricted iron availability. This is the first report describing the presence of the fhu genes in H. parasuis. Our results indicate that FhuA protein expression is not affected under ironrestricted conditions, however, it is one of the targets of the humoral immune responseS

Safety and Efficacy of an Oncolytic Adenovirus as an Immunotherapy for Canine Cancer Patients

The use of oncolytic virus is an innovative approach that has shown promising results as a treatment in oncology. Epithelial-derived tumors are the most frequent neoplasms in dogs, but gold standard therapies can be highly invasive procedures. Due to the accessible localization of these tumors, the intratumoral administration is feasible. Therefore, we propose to determine the safety and efficacy of intratumoral administration of oncolytic adenovirus ICOCAV15, in canine patients with epithelial-derived tumors. Eight dogs with carcinoma/adenocarcinoma were intratumorally treated with ICOCAV15. No clinically relevant changes were observed in the blood count, biochemistry and coagulation test analyzed during follow-up. The survival time of the 6/8 dogs exceeded the median survival time with chemotherapy, showing a partial response rate of 25% and 75% of stable disease. ICOCAV15 was detected in the target lesion by qPCR and immunohistochemistry. Also, some of the non-treated metastasis showed an infiltration of ICOCAV15 by immunohistochemistry. The immune populations were evaluated, and an increase of CD8+, MAC387+, CD3+ and CD20+ cells was reported in some of the patients after the inoculation. These results show that intratumoral ICOCAV15 is safe and well tolerated by dogs. Also, they suggest ICOCAV15 could be a new tool in veterinary oncology for accessible carcinomas/adenocarcinomas. The use of oncolytic viruses is an innovative approach to lyse tumor cells and induce antitumor immune responses. Eight dogs diagnosed with carcinoma/adenocarcinoma were intratumorally treated with ICOCAV15, an oncolytic canine adenovirus (CAV). To evaluate the treatment's safety, a blood count, biochemistry, and coagulation test were performed before treatment and during follow-up. Immune populations were analyzed by flow cytometry. Anti-adenovirus antibodies were also determined. The immune infiltration, vascularization, and viral presence in the tumor were determined by CD3, CD4, CD20, CD31 and CAV by immunohistochemistry. All the dogs maintained a good quality of life during follow-up, and some had increased median survival time when compared with dogs treated with chemotherapy. No treatment-related adverse effects were detected. The Response Evaluation Criteria In Solid Tumors criteria were also assessed: two patients showed a partial response and the rest showed stable disease at various times during the study. ICOCAV15 was detected inside the tumor during follow-up, and antiviral antibodies were detected in all patients. Furthermore, the tumor-infiltrating immune cells increased after viral administration. Therefore, we suggest that intratumorally administered ICOCAV15 could represent as a new tool for the treatment of canine carcinoma because it is safe, well-tolerated by dogs, and shows promising results

Del aula a la escena y las TICS: creación de nuevas estrategias para la docencia teórico-práctica de la música

Memoria ID-0099. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2014-2015

N7-methylguanosine methylation of tRNAs regulates survival to stress in cancer

Tumour progression and therapy tolerance are highly regulated and complex processes largely dependent on the plasticity of cancer cells and their capacity to respond to stress. The higher plasticity of cancer cells highlights the need for identifying targetable molecular pathways that challenge cancer cell survival. Here, we show that

Implementación de un sistema Blearning en asignaturas de grado y máster: sistema "Innovablend"

Memoria ID-0036. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2017-2018

Epidemiologia i perfil de resistència antibiòtica de Campylobacter jejuni: Catalunya, 2020 - 2021

Campylobacter jejuni; Epidemiología; Resistencia antibióticaCampylobacter jejuni; Epidemiology; Antibiotic resistanceCampylobacter jejuni; Epidemiologia; Resistència antibiòticaAquest informe té com a objectiu analitzar les característiques epidemiològiques dels casos confirmats de Campylobacter jejuni i analitzar la sensibilitat antimicrobiana dels casos declarats a l’SNMC durant els anys 2020-2021.Este informe tiene como objetivo analizar las características epidemiológicas de los casos confirmados de Campylobacter jejuni y analizar la sensibilidad antimicrobiana de los casos declarados en el SNMC durante los años 2020-2021.The aim of this report is to analyze the epidemiological characteristics of confirmed cases of Campylobacter jejuni and to analyze the antimicrobial sensitivity of the cases declared to the SNMC during the years 2020-2021

Epidemiologia i perfil de resistència antibiòtica de salmonel·la no tifòdica i salmonel·la tífica: Catalunya, 2020-2021

Resistència antibiòtica; Salmonel·la no tifòdica; Salmonel·la tíficaResistencia antibiótica; Salmonela no tifódica; Salmonela tíficaAntibiotic resistance; Non-typhoidal Salmonella; Salmonella typhiAquest informe té com a objectiu analitzar les característiques epidemiològiques dels casos confirmats de salmonel·la no tifòdica i salmonel·la tífica i analitzar la sensibilitat antimicrobiana dels casos declarats a l’SNMC durant els anys 2020-2021

Epidemiologia i perfil de resistència antibiòtica de Neisseria gonorrhoeae: Catalunya, 2018-2021

Neisseria gonorrhoeae; Epidemiologia; Resistència antibiòticaNeisseria gonorrhoeae; Epidemiología; Resistencia antibióticaNeisseria gonorrhoeae; Epidemiology; Antibiotic resistanceAquest informe té com a objectiu analitzar les característiques epidemiològiques dels casos confirmats d’NG i la sensibilitat antimicrobiana dels casos declarats a l’SNMC durant el període 2018-2021