Asociación entre penfigoide ampolloso e inhibidores de la dipeptidilpeptidasa-4: estudio de cohortes retrospectivo / Association Between Bullous Pemphigoid and Dipeptidyl Peptidase 4 Inhibitors: A Retrospective Cohort Study

ANTECEDENTES: La asociación entre los inhibidores de la dipeptidil peptidasa 4 (iDPP-4) y el penfigoide ampolloso (PA) se ha demostrado en varios estudios. El objetivo principal de este estudio era estimar el uso del tratamiento con iDPP-4i en pacientes diagnosticados de PA en nuestro entorno. MATERIAL Y MÉTODOS: Seleccionamos pacientes diagnosticados histológicamente de PA en nuestro departamento entre octubre de 2015 y octubre de 2018. Realizamos una revisión retrospectiva para evaluar los datos clínicos-epidemiológicos y los patrones de inmunofluorescencia directa (IFD). RESULTADOS: De los 70 pacientes diagnosticados con PA durante el período de estudio, el 50% eran diabéticos y el 88,57% de ellos estaban siendo tratados con un iDPP-4 en el momento del diagnóstico de PA. El iDPP-4 más frecuente era la linagliptina (utilizada en el 18,6% de los pacientes), seguida de la vildagliptina (el 17,1%). La mediana de tiempo de latencia entre el inicio del tratamiento con iDPP-4 y el diagnóstico de PA fue de 27,5 meses, siendo de 16 meses para la linagliptina y 39 meses para la vildagliptina (log Rank < 0,01). La IFD fue negativaUn resultado negativo de DIF fue significativamente más común en pacientes que no fueron tratados con un DPP-4i. El patrón DIF más fuertemente (y significativamente) asociado con el tratamiento con DPP-4i fueron los depósitos lineales de inmunoglobulina G a lo largo de la unión dermoepidérmica. El tratamiento con DPP-4i se retiró en el 87% de los pacientes y el 96% de ellos logró una respuesta completa. CONCLUSIÓN: El tratamiento con DPP-4i es muy común en pacientes con BP en nuestro entorno. El período de latencia entre el inicio del tratamiento y el inicio de la PA parece ser más corto con linagliptina que con otros tipos de gliptinas. Los pacientes que reciben tratamiento con DPP-4i pueden mostrar patrones DIF diferentes a los que no reciben tratamiento

BACKGROUND: The association between dipeptidyl peptidase 4 inhibitors (DPP-4i) and bullous pemphigoid (BP) has been demonstrated in several studies. The main aim of this study was to estimate the use of DPP-4i treatment in patients diagnosed with BP in our setting. METHODS: We selected patients histologically diagnosed with BP in our department between October 2015 and October 2018 and performed a retrospective chart review to assess clinical and epidemiological data and direct immunofluorescence (DIF) patterns. RESULTS: Of the 70 patients diagnosed with BP during the study period, 50% were diabetic and 88.57% of these were being treated with a DPP-4i when diagnosed with BP. The most common DPP-4i was linagliptin (used in 18.6% of patients), followed by vildagliptin (17.1%). The median latency period between initiation of DPP-4i treatment and diagnosis of BP was 27.5 months for all treatments, 16 months for linagliptin, and 39 months for vildagliptin (log rank < 0.01). A negative DIF result was significantly more common in patients not being treated with a DPP-4i. The DIF pattern most strongly (and significantly) associated with DPP-4i treatment was linear immunoglobulin G deposits along the dermal-epidermal junction. DPP-4i treatment was withdrawn in 87% of patients and 96% of these achieved a complete response. CONCLUSIONS: DPP-4i treatment is very common in patients with BP in our setting. The latency period between start of treatment and onset of BP seems to be shorter with linagliptin than with other types of gliptins. Patients receiving DPP-4i treatment may show different DIF patterns to those not receiving treatment

Association Between Bullous Pemphigoid and Dipeptidyl Peptidase 4 Inhibitors: A Retrospective Cohort Study. / Asociación entre penfigoide ampolloso e inhibidores de la dipeptidilpeptidasa-4: estudio de cohortes retrospectivo.

BACKGROUND: The association between dipeptidyl peptidase 4 inhibitors (DPP-4i) and bullous pemphigoid (BP) has been demonstrated in several studies. The main aim of this study was to estimate the use of DPP-4i treatment in patients diagnosed with BP in our setting. METHODS: We selected patients histologically diagnosed with BP in our department between October 2015 and October 2018 and performed a retrospective chart review to assess clinical and epidemiological data and direct immunofluorescence (DIF) patterns. RESULTS: Of the 70 patients diagnosed with BP during the study period, 50% were diabetic and 88.57% of these were being treated with a DPP-4i when diagnosed with BP. The most common DPP-4i was linagliptin (used in 18.6% of patients), followed by vildagliptin (17.1%). The median latency period between initiation of DPP-4i treatment and diagnosis of BP was 27.5 months for all treatments, 16 months for linagliptin, and 39 months for vildagliptin (log rank < 0.01). A negative DIF result was significantly more common in patients not being treated with a DPP-4i. The DIF pattern most strongly (and significantly) associated with DPP-4i treatment was linear immunoglobulin G deposits along the dermal-epidermal junction. DPP-4i treatment was withdrawn in 87% of patients and 96% of these achieved a complete response. CONCLUSIONS: DPP-4i treatment is very common in patients with BP in our setting. The latency period between start of treatment and onset of BP seems to be shorter with linagliptin than with other types of gliptins. Patients receiving DPP-4i treatment may show different DIF patterns to those not receiving treatment.

Haemophilus Species Isolated in Urethral Exudates as a Possible Causative Agent in Acute Urethritis: A Study of 38 Cases. / Aislamiento de Haemophilus spp. en exudados uretrales como posible agente etiológico de uretritis aguda: estudio de 38 casos.

INTRODUCTION: The incidence of urethritis due to Haemophilus species is increasing. The main aim of this study was to describe the clinical and microbiological characteristics of patients with this form of urethritis. A secondary aim was to discuss the adequacy of treatments in patients with different types of antibiotic resistance. MATERIAL AND METHODS: We studied patients with a microbiologically confirmed diagnosis of urethritis seen at the Sexually Transmitted Infections Unit of our hospital between July 2015 and July 2018. We selected all patients in whom Haemophilus species were isolated on chocolate agar. Antibiotic resistance was tested using the disk-diffusion method. Cross-sectional data were collected prospectively during outpatient visits. RESULTS: Haemophilus species were isolated in 33.6% of cases. The most common clinical manifestation was urethral discharge (57.6%); 60% of the patients were men who have sex with men and in this subgroup Haemophilus species were significantly more common than either Neisseria or Chlamydia species. Haemophilus species were found in isolation in 39.5% of patients and the most common one was Haemophilus parainfluenzae (isolated in 84.2% of cases). In total, 34.2% of patients were resistant to azithromycin and 26.3% were resistant to both azithromycin and tetracycline. Empirical treatment achieved clinical and microbiologic cure in 11 of the patients who were not lost to follow-up (n=17; 44.7%). The remaining 6 patients required treatment with a new antibiotic. CONCLUSIONS: Haemophilus species are a new cause of nongonococcal urethritis, whose incidence is rising, particularly in men who have sex with men who engage in unprotected oral sex. The clinical manifestations are similar to those seen in gonococcal urethritis. Eradication of infection must be confirmed due to the high rate of antibiotic resistance associated with Haemophilus species.

Sensibilización alérgica a isotiazolinonas en pacientes remitidos a estudio fotobiológico / Allergic Sensitization to Isothiazolinones in Patients Referred for Photobiologic Study

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