RESUMEN
BACKGROUND: The malignant mechanisms that control the development of cutaneous T-cell lymphoma (CTCL) are beginning to be identified. Recent evidence suggests that disturbances in specific intracellular signalling pathways, such as RAS-mitogen-activated protein kinase, T-cell receptor (TCR)-phospholipase C gamma 1 (PLCG1)-nuclear factor of activated T cells (NFAT) and Janus kinase (JAK)-signal transducer and activator of transcription (STAT), may play an essential role in the pathogenesis of CTCL. OBJECTIVES: To investigate the mechanisms controlling disease development and progression in mycosis fungoides (MF), the most common form of CTCL. METHODS: We collected 100 samples that were submitted for diagnosis of, or a second opinion regarding, MF between 2001 and 2018, 80% of which were in the early clinical stages of the disease. Formalin-fixed paraffin-embedded tissues were used for histological review and to measure the expression by immunohistochemistry of surrogate markers of activation of the TCR-PLCG1-NFAT, JAK-STAT and NF-κB pathways. Folliculotropism and large-cell transformation were also examined. RESULTS: NFAT and nuclear factor kappa B (NF-κB) markers showed a comparable activation status in early and advanced stages, while STAT3 activation was more frequent in advanced stages and was associated with large-cell transformation. Consistently with this observation, STAT3 activation occurred in parallel with MF progression in two initially MF-negative cases. A significant association of NFAT with NF-κB markers was also found, reflecting a common mechanism of activation in the two pathways. Genomic studies identified nine mutations in seven genes known to play a potential role in tumorigenesis in T-cell leukaemia/lymphoma, including PLCG1, JAK3 and STAT3, which underlies the activation of these key cell-survival pathways. A higher mutational allele frequency was detected in advanced stages. CONCLUSIONS: Our results show that STAT3 is activated in advanced cases and is associated with large-cell transformation, while the activation of NFAT and NF-κB is maintained throughout the disease. These findings could have important diagnostic and therapeutic implications. What's already known about this topic? Mycosis fungoides is characterized by a clonal expansion of T cells in the skin. The mechanisms controlling disease development and progression are not fully understood. What does this study add? An association of the nuclear factor of activated T cells and nuclear factor kappa B pathways was found, which could reflect a common mechanism of activation. These pathways were activated in early and advanced stages at the same level. Signal transducer and activator of transcription 3 activation was associated with large-cell transformation and was more frequent in advanced stages. A genomic analysis of cutaneous T-cell lymphoma-associated genes was performed. Nine mutations were detected. What is the translational message? These results could have important implications for the treatment of MF in the near future.
Asunto(s)
Linfoma Cutáneo de Células T , Micosis Fungoide , FN-kappa B , Factores de Transcripción NFATC , Factor de Transcripción STAT3 , Neoplasias Cutáneas , Humanos , Micosis Fungoide/genética , Factor de Transcripción STAT3/genética , Factor de Transcripción STAT3/metabolismo , Neoplasias Cutáneas/genética , Linfocitos T/metabolismoRESUMEN
The aim of the present study is to evaluate the usefulness of two biomarkers-procalcitonin (PCT) and C-reactive protein (CRP)-in addition to the CURB-65 score for assessing the site of care and the etiology of non-severe community-acquired pneumonia (CAP). We conducted a prospective observational study from April 1, 2006, to June 30, 2007, in a single teaching hospital in northern Spain among patients with non-severe CAP. In addition to collecting data needed to determine the CURB-65 score, microbial cultures were taken and levels of PCT and CRP were measured. We compared the prognostic accuracy of these biomarkers with the CURB-65 score to predict hospitalization and microbial etiology using receiver operating characteristic (ROC) curves. A total of 344 patients with non-severe CAP were enrolled; 73 were admitted to the hospital and 271 were treated on an outpatient basis. An etiologic diagnostic was made for 44 %, with atypical pathogens predominating. Levels of PCT and CRP increased with increasing CURB-65 scores. Patients admitted to the hospital had higher PCT and CRP levels than outpatients (p < 0.001). For predicting hospitalization, PCT had a better area under the ROC curve (AUC) (0.81) than the CURB-65 score alone (0.77). For PCT plus the CURB-65 score, the AUC increased significantly from 0.77 to 0.83. In patients with bacterial CAP, the biomarker levels were significantly higher than among patients with atypical or viral etiology (p < 0.001). PCT with a cut-off point of 0.15 ng/mL was the best predictor for bacterial etiology and for select patients eligible for outpatient care. In conclusion, levels of PCT and CRP positively correlate with increasing severity of CAP and may have a role in predicting both patients who can safely receive outpatient care and the microbial etiology in patients with low CURB-65 scores.
Asunto(s)
Biomarcadores/análisis , Proteína C-Reactiva/análisis , Calcitonina/sangre , Infecciones Comunitarias Adquiridas/diagnóstico , Infecciones Comunitarias Adquiridas/terapia , Técnicas de Apoyo para la Decisión , Neumonía Bacteriana/diagnóstico , Neumonía Bacteriana/terapia , Neumonía Viral/diagnóstico , Neumonía Viral/terapia , Precursores de Proteínas/sangre , Adulto , Anciano , Anciano de 80 o más Años , Atención Ambulatoria , Péptido Relacionado con Gen de Calcitonina , Medicina Clínica/métodos , Femenino , Hospitalización , Hospitales de Enseñanza , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Prospectivos , Curva ROC , EspañaRESUMEN
A total of 116 samples (44 clinical specimens and 72 environmental samples) have been analyzed for the presence of Acanthamoeba. The environmental samples (ESs) were collected from four drinking water treatment plants (DWTP, n=32), seven wastewater treatment plants (n=28), and six locations of influence (n=12) on four river basins from the central area of Spain (winter-spring 2008). Water samples were concentrated by using the IDEXX Filta-Max(®) system. Acanthamoeba was identified in 65 of the 72 ESs by culture isolation (90.3%) and 63 by real-time PCR (87.5%), resulting in all sampling points (100%) positive for Acanthamoeba when considering both techniques and all the time period analyzed. Nine of the 44 clinical specimens were positive for Acanthamoeba. Seventeen Acanthamoeba strains (eight from four DWTP and nine from clinical samples) were also established in axenic-PYG medium. Twenty-four of the ESs and the 17 Acanthamoeba sp. strains were genotyped as T4/1, T4/8, and T4/9. The eight strains isolated from the DWTP samples were inoculated in nude mouse to ascertain their potential pathogenicity in this model. Animals that were inoculated died or showed central nervous system symptoms 9 days post-inoculation. Examination of immunofluorescence-stained brain and lung tissue sections showed multiple organisms invading both tissues, and re-isolation of throphozoites was successful in these tissues of all infected animals. For the first time, potentially pathogenic Acanthamoeba T4 has been detected in 100% of different types of water samples including tap water and sewage effluents in the central area of Spain suggesting a potential health threat for humans especially for the contact lens wearers.
Asunto(s)
Acanthamoeba/clasificación , Acanthamoeba/aislamiento & purificación , Amebiasis/parasitología , Agua/parasitología , Acanthamoeba/genética , Amebiasis/mortalidad , Amebiasis/patología , Animales , Encéfalo/parasitología , Encéfalo/patología , ADN Protozoario/genética , Genotipo , Humanos , Pulmón/parasitología , Pulmón/patología , Ratones , Ratones Desnudos , Reacción en Cadena en Tiempo Real de la Polimerasa , España , Análisis de Supervivencia , Purificación del AguaRESUMEN
Microsporidia are currently considered emerging pathogens responsible for life-threatening infections in organ transplant recipients. Here, we describe the first cases of intestinal microsporidiosis by Enterocytozoon bieneusi genotype D in two non-HIV-infected renal transplant recipients from Spain. Previously reported cases of microsporidiosis in organ transplant recipients have also been reviewed, highlighting the necessity of considering organ transplant recipients a risk group for microsporidiosis. A systematic search for these parasites is recommended in cases of persistent diarrhea and in the differential diagnosis of other syndromes, such as chronic fever of unknown etiology.
Asunto(s)
Enterocytozoon/aislamiento & purificación , Microsporidiosis/diagnóstico , Trasplante , Anciano , Enterocytozoon/clasificación , Enterocytozoon/genética , Genotipo , Humanos , Huésped Inmunocomprometido , Trasplante de Riñón/efectos adversos , Masculino , Microsporidiosis/patología , Persona de Mediana Edad , EspañaRESUMEN
Primitive neuroectodermal tumor (PNET) is part of the Ewing sarcoma family of tumors. The present case reports a primitive neuroectodermal tumor (PNET) of rare location in the bladder in a newborn. It was evaluated with prenatal ultrasound and postnatal tomography that revealed a mass in the posterior wall of the bladder. The patient underwent partial cystectomy with subsequent analysis of the surgical piece removed, the histopathological study indicated a tumor of mesenchymal origin, and immunohistochemical staining confirmed the diagnosis of PNET of the bladder. Satisfactory result and short-term follow-up.
RESUMEN
BACKGROUND: The present study aims to evaluate the safety and effectiveness of the Boussignac continuous positive airway pressure device (CPAPB) when used during the transportation of infants under three months of age with bronchiolitis. METHODS: Transversal analytical observational study of four years duration. Data was collected on 25 infants who needed inter-hospital transportation to the reference Paediatric Intensive Care Unit (PICU), with CPAPB and Helmet interface. The epidemiological characteristics of the transportation and evolution in the PICU were registered, as well as the cardiorespiratory gastronomic parameters prior to transfer and on arrival at the PICU. RESULTS: The median level of continuous airway pressure (CPAP) used during the transfer was 7 cm H2O (6-7.25). No patient required endotracheal intubation during transportation, while one patient required this during the first six hours of admission in the PICU. The following cardiorespiratory parameters presented a statistically significant improvement on arrival at the PICU: modified Wood-Downes score [8.40 (2.1) vs 5.29 (1.68)], respiratory frequency [60.72 (12.73) vs 47.28 (10.31)], cardiac frequency [167.28 (22.60) vs 154.48 (24.83)] and oxygen saturation [92.08 (5.63) vs 97.64 (2.27)]. CONCLUSIONS: Application of CPAPB proved to be a safe method of respiratory support in infants under three months of age. Its use during transportation brought an improvement in cardiorespiratory parameters.
Asunto(s)
Bronquiolitis/terapia , Presión de las Vías Aéreas Positiva Contínua/instrumentación , Unidades de Cuidado Intensivo Pediátrico , Transporte de Pacientes/métodos , Diseño de Equipo , Femenino , Humanos , Lactante , Recién Nacido , Intubación Intratraqueal/métodos , MasculinoRESUMEN
A case of retroperitoneal hemorrhage due to the rupture of a multiple angiomyolipoma in a female with a unique kidney is described. Hipovolemic shock was the first symptom, being possible to perform on her a successful conservative surgery. Etiology, diagnostic methods and treatment of the spontaneous retroperitoneal hemorrhage are discussed.
Asunto(s)
Angiomiolipoma/complicaciones , Angiomiolipoma/cirugía , Tratamiento de Urgencia , Neoplasias Renales/complicaciones , Neoplasias Renales/cirugía , Riñón/anomalías , Femenino , Hemorragia/etiología , Hemorragia/cirugía , Humanos , Persona de Mediana Edad , Espacio RetroperitonealRESUMEN
Microsporidia are intracellular obligate parasites which have recently been found to be related to fungi. They have a unique extrusion apparatus that is able to inject the sporoplasm directly into the target cell without using receptors. Encephalitozoon microsporidia are a source of morbidity and mortality in humans. It has been suggested that microsporidia may modulate the host cell cycle and apoptosis. We report here that caspase-3 cleavage is inhibited at different times of Vero cell infection by Encephalitozoon microsporidia and that the phosphorylation and translocation of p53 to the nucleus, previous steps for the activation of this protein, do not occur after infection of Vero cells. Consequently, the transcriptional function of p53 is impaired during the infection cycle as demonstrated by luciferase reporter assays. Thus, to our knowledge, for the first time it is shown that an intracellular parasite may be able to multiply in the host cell without activating the p53 apoptotic pathway of that cell. However, changes in the expression of Bcl-2 or Bax levels were not observed.
Asunto(s)
Apoptosis/fisiología , Encephalitozoon/fisiología , Encefalitozoonosis/patología , Proteína p53 Supresora de Tumor/fisiología , Animales , Western Blotting , Caspasa 3/metabolismo , Chlorocebus aethiops , Encephalitozoon/genética , Encephalitozoon/metabolismo , Encefalitozoonosis/metabolismo , Encefalitozoonosis/microbiología , Humanos , Microscopía Confocal , Proteínas Proto-Oncogénicas c-bcl-2/metabolismo , Transfección , Proteína p53 Supresora de Tumor/metabolismo , Células Vero , Proteína X Asociada a bcl-2/metabolismoRESUMEN
OBJECTIVE: The goal of this work tries to evaluate the utility of the qualitative determination of NMP-22 in the evaluation of the superficial bladder carcinoma in asymptomatic patients, comparing it with its quantitative determination, the cytology and the cystoscopy. MATERIALS AND METHODS: A simple of urine just voided was taken in 88 asymptomatic patient follow-up for superficial bladder cell carcinoma. This dose was distributed in 3 parts, for performed cytology, for determination of NMP-22, and 4 drops of the third part are added to device bladder chek. Later, we performed cystoscopy and transurethral resection in patients with a suspicion of bladder cancer. RESULTS: 26 patients had tumor relapse and 62 patients were free of disease. The sensitivity for the bladder chek was of 28%, 34.62% for NMP-22, 34.62% for cytology and 100% for cystoscopy. The specificity was of 93.55%, 80.33%, 87.10% and 87.10% respectively. The sensitivity by degree was 25 in G1, 28.57 in G2 and 50 in G3 for Bladder chek; 29.41, 42.86 and 50 for NMP-22; 23.53, 71.43 and 0 for cytology. The sensitivity by stages was 27.7 in Ta-1 and 50 in T2 for Bladder chek; 34.78 and 50 for NMP-22; 39.13 and 0 for the cytology. CONCLUSIONS: The low sensitivity of bladder chek invalidates it like alternative method to the cystoscopy in the follow-up of the superficial asymptomatic bladder cell carcinoma.
Asunto(s)
Carcinoma de Células Transicionales/diagnóstico , Cistoscopía , Pruebas Inmunológicas , Proteínas Nucleares/análisis , Neoplasias de la Vejiga Urinaria/diagnóstico , Orina/citología , Femenino , Humanos , Masculino , Sensibilidad y EspecificidadRESUMEN
Intratesticular epidermoid cysts are rare tumours that constitute one percent of all testicular masses. They are bening lesions that make differential diagnosis from malignant testicular tumours difficult. The absence of serum markers elevation and ultrasound imaging could support these lesions being bening epidermoid cysts, and in that case, conservative surgery is adequate. We present the case of a 22 years old patient who complains of a left testicular mass. In this case ultrasound diagnosis was non-specific and a left radical inguinal orchiectomy was performed.
Asunto(s)
Quiste Epidérmico/diagnóstico por imagen , Neoplasias Testiculares/diagnóstico por imagen , Adulto , Humanos , Masculino , Cuidados Preoperatorios , UltrasonografíaRESUMEN
INTRODUCTION AND OBJECTIVES: A quarter of patients waiting for kidney transplantation are patients with previous graft failure. Outcome of first and second renal transplant make these the gold standard for end renal stage disease, but this is not so clear in the case of third and further renal transplant, especially at the time of organ shortage. We revise our experience in patients with three or more kidney transplants focusing on surgical aspects and graft outcome. MATERIAL AND METHOD: 1364 renal transplants have been carried out in our centre since 1975 until December 2003. We have retrospectively revised the 34 patients with three renal transplants and the 5 with four. We analyse the surgical technique, surgical complications and graft outcome. RESULTS: Mean age was 42 years (21-65). Average mismatches between donor and recipient was 3.2. All kidneys, but one case of living donor, were harvested from cadaver donors, mostly in multiple organ-procurement. Average time from the last renal transplant was 5 years (3 days-17 years) and from the last transplant carried out in the iliac fossa reused until the new transplant was 9 years (3 days- 17.5 years). All implants were performed through an iterative lumboliliac incision (25 on the right side, 11 on the left one and in 3 cases where side was not registered). Mean average duration of the procedure was 166 minutes (100-300). Nephrectomy of previous graft at the moment of the implant was carried out in 13 patients (33%). Vascular anastomosis was made on the common iliac vessels (50%) or on the external ones (50%) in end to side way, Ureteroneocystostomy was performed in an extravesical way except in 1 patient with cutaneous diversion. Vascular complications were 4 haemorrages (1 patient died), 3 venous and 2 arterial thrombosis. We had an abscess secondary to intestinal fistulae. Other surgical complications were 4 lymphoceles, three of them needed surgical treatment, and one perirenal haematoma treated in a conservative way. No urological complications were seen. In total 6 grafts (15%) were lost due to surgical complications. Graft actuarial survival rate at 1 year was 65%, 40% at 5 and 28% at 10 years. CONCLUSIONS: Three and four renal transplant survival rates are shorter than first and second ones. Iterative access through lumboiliac incision is associated with a higher vascular complication rate, probably in these patients a transperitoneal access would be better. Multicentric studies with higher numbers of patients are needed to define more clearly which patients would benefit from multiple kidney retransplants.
Asunto(s)
Trasplante de Riñón/métodos , Reoperación , Adulto , Anciano , Femenino , Humanos , Trasplante de Riñón/efectos adversos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias , Estudios Retrospectivos , Resultado del TratamientoRESUMEN
OBJECTIVES: Occasionally, the development of laparoscopic procedures allows the performance of combined surgeries. Currently, some of these can be carried out by trans-umbilical single-port laparoscopy. MATERIAL AND METHODS: We report a patient with renal tumor of 4.5cm and cholelithiasis who undergone to trans-umbilical single port-right radical nephrectomy with concomitant cholecystectomy. This is the first case reported in Spain that this combined procedure is performed using umbilical single port surgery. RESULTS: No complications (intra or postoperative) have been described in this case, achieving proper control of tumor pathology and an excellent cosmetic outcome. CONCLUSION: In those cases in which multidisciplinary approach is required, surgery can be performed by trans-umbilical single-port laparoscopy as consequence of its reduced postoperative morbidity and better cosmetic results.
Asunto(s)
Colecistectomía/métodos , Colelitiasis/cirugía , Neoplasias Renales/cirugía , Laparoscopía/métodos , Nefrectomía/métodos , Colelitiasis/complicaciones , Humanos , Neoplasias Renales/complicaciones , Masculino , Persona de Mediana Edad , OmbligoRESUMEN
Legionella spp. is the causative agent of Legionnaires' disease and is transmitted through aerosols emanating from man-made water systems. Legionella resistance to water treatments has been related to its association with environmental amoebae such as Acanthamoeba. Due to the high presence of this protozoon in Spain and the high rate of notification of Legionnaires' disease of this country, the aims of this work were to study the coexistence of these bacteria and protozoa in water as well as their interaction. The usefulness of Acanthamoeba co-culture for the isolation of environmental Legionella was also studied. For this purpose, 70 water samples were collected in 2011 from three Drinking Water Treatment Plants, three Wastewater Treatment Plants and five Natural Pools in Spain. Acanthamoeba was found by PCR in 87.1% (61/70) samples and, by culture in 85.7% (60/70) samples. Legionella was detected by PCR in 58.6% (41/70) of water samples, in 5.7% (4/70) by agar culture and 75.7% (53/70) by Acanthamoeba co-culture. From the 54 Acanthamoeba water isolates, Legionella was detected in 43 of them independently of Acanthamoeba's genotype (T3, T4 and T11). Legionella feeleii, Legionella birminghamiensis, Legionella gresilensis/berliardensis, Legionella fairfieldensis, Legionella drozanski and Legionella falloni were identified. In conclusion, our results showed that environmental Acanthamoeba is infected by Legionella to a high percentage, and due to its ubiquity, high resistance and its pathogenic potential per se, new methods for its elimination should be studied. Also, the high effectivity of Acanthamoeba co-culture for Legionella detection has been shown.
Asunto(s)
Acanthamoeba/fisiología , Legionella/fisiología , Microbiología del Agua , Purificación del Agua/métodos , Humanos , Enfermedad de los Legionarios/transmisión , Reacción en Cadena de la Polimerasa , EspañaRESUMEN
In most natural environments, association with a surface in a structure known as a biofilm is the prevailing microbial life-style. Escherichia coli has been a useful model for the study of biofilm formation. Here we analyzed the amounts of biofilm formed when E. coli was cultured in the presence of MOPS [3-(N-morpholino)propane sulfonatel. We used the "O'Toole and Kolter" method, which consisted of growing cells in PVC microtiter dishes and staining the formed biofilm with crystal violet. Our results showed that: 1) the addition of 100 mM MOPS to the rich Luria-Bertani (LB) medium increased the capacity of biofilm formation of several E. coli strains; and 2) the biofilm formed by cells growing in the presence of MOPS was more evident and well defined than that of cells cultured in LB-only medium. The improved ability of forming biofilms was maintained even for 60 h after removing MOPS from the medium, indicating that this improvement was due to a change in the metabolism of E. coli growing in the presence of MOPS or that, under these conditions, biofilm formation was favored.
Asunto(s)
Biopelículas/efectos de los fármacos , Escherichia coli/efectos de los fármacos , Morfolinas/farmacología , Medios de Cultivo , Concentración de Iones de HidrógenoRESUMEN
STUDY OBJECTIVE: To delineate the course of serum adenosine deaminase (s-ADA) in patients with tuberculosis who are receiving effective therapy. SETTING: A medical ward and an outpatient clinic in a general hospital. PATIENTS: Twenty-five immunocompetent patients with pleural or pulmonary tuberculosis. INTERVENTIONS: All patients received standard chemotherapeutic regimens with isoniazid, rifampin, and pyrazinamide. MEASUREMENTS AND RESULTS: Six measurements of several variables, including s-ADA, were carried out at different periods of time during the 6 months of follow-up. There were no significant differences in s-ADA values between sexes and there was no significant correlation with age or with the other variables analyzed. There was a significant decline in the s-ADA values during the first 2 months in the patients as a whole (p=0.04), followed by a stabilization of the s-ADA activity. This decline was due to a marked decrease in the s-ADA in the 13 patients (52%) who had initial high levels of the enzyme (p=0.03), whereas there were no changes in those patients with normal initial levels (p=0.27). Patients with increased s-ADA activity at the time of the first measurement reported symptoms for a longer period than patients with normal s-ADA (median, 15 vs 10 days; p=0.02). CONCLUSIONS: s-ADA levels in patients with tuberculosis decrease during the initial months of effective treatment. Perhaps this decrease might reflect the normalization of the altered lymphocyte turnover induced by tuberculosis. The measurement of s-ADA could be of some help to evaluate the response to therapy, particularly in those patients with increased values of the enzyme.
Asunto(s)
Adenosina Desaminasa/sangre , Antituberculosos/uso terapéutico , Tuberculosis Pleural/enzimología , Tuberculosis Pulmonar/enzimología , Adolescente , Adulto , Biomarcadores/sangre , Quimioterapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Isoniazida/uso terapéutico , Masculino , Persona de Mediana Edad , Pirazinamida/uso terapéutico , Rifampin/uso terapéutico , Resultado del Tratamiento , Tuberculosis Pleural/complicaciones , Tuberculosis Pleural/tratamiento farmacológico , Tuberculosis Pulmonar/complicaciones , Tuberculosis Pulmonar/tratamiento farmacológicoRESUMEN
Biofilm formation in Escherichia coli is a process that involves slow growth and stress conditions where several molecular signals and growth phase regulated genes are involved. Here we show that rpoS mutant strains (defective in the stress regulator sigma(S)) exhibit an increased production of biofilm, especially in the exponential phase of growth. Our results indicate that rpoS mutants produce an extracellular factor that promotes the production of biofilm during the exponential phase of growth. Thus, RpoS plays an important role in the regulation of the amount and initiation of biofilm formation in E. coli.
Asunto(s)
Proteínas Bacterianas/genética , Biopelículas/crecimiento & desarrollo , Escherichia coli/crecimiento & desarrollo , Escherichia coli/genética , Mutación/genética , Factor sigma/genética , Biopelículas/efectos de los fármacos , Factores Biológicos/análisis , Factores Biológicos/farmacología , Medios de Cultivo Condicionados/química , Escherichia coli/clasificación , Escherichia coli/efectos de los fármacos , Espacio Extracelular/química , Genes Reporteros/genética , beta-Galactosidasa/genéticaRESUMEN
The aim of the present study was to determine the salivary pH in HIV (Human Immunodeficiency Virus) positive(+) and negative(-) patients and in a control group, for assessing if variations or changes in pH are related to the development of oral candidosis and the species isolated. The sample comprised 120 patients from the Infectology Unit of the Mexico General Hospital, and from the School of Dentistry, UNAM. Three study groups were performed: with oral candidosis HIV+, with oral candidosis HIV-, and a control group. All patients filled out a clinical data questionnaire and signed an informed consent document. A 2 ml sample of non-stimulated saliva was obtained from each patient. The pH was measured and the sample was cultured on dextrose Sabouraud agar. The Candida species determinations were performed by the API 20 C AUX system and statistically analyzed. In the HIV+ group, the pH mean was 6.17, with most prevalence of Candida albicans type I and pseudomembranous candidosis. In the HIV- group prosthesis users, the pH mean was 6.29, with most prevalence of C. albicans type I, but with erythematous candidosis. The control group showed a mean pH of 6.78. A statistically significant difference among pH values was found (F= 15.45 p<0.01). The present study revealed that in HIV+ patients, the most significant predisposing factors are: immunosuppression, antibiotic therapy, bad hygiene, anemia, leucoplakia, and diabetes. The salivary pH with acidic values (more in HIV+ patients) significantly favors candidosis development, specially for C. albicans and C. glabrata species and primarily the pseudomembranous and erythematous clinic types. The pH is not a determinant for Candida growth, but could affect the adherence and invasiveness of the yeast.
RESUMEN
A case of superficial angiomyxoma arising in the areola of a 49-yr-old woman is presented, including both fine-needle aspiration cytology (FNAC) and histological study. The aspirate yielded a rich myxoid background with isolated fusiform cells, showing oval, monomorphic nuclei with minimal atypia. Sometimes these cells were arranged in small fragments without any specific pattern. The absence of mitotic figures, atypia, or cutaneous and breast epithelium suggested a benign myxoid stromal neoplasm. The final diagnosis was established on the excised mass by histopathologic study. The report of this entity in FNAC and the differential diagnosis with other myxoid lesions are discussed, and the feasibility of its cytological diagnosis by FNAC, helped by appropriate clinical information.
Asunto(s)
Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/patología , Mixoma/diagnóstico , Mixoma/patología , Adulto , Biopsia con Aguja , Femenino , HumanosRESUMEN
BACKGROUND: To assess long-term effectiveness of a multifactorial intervention at the work-site on serum cholesterol levels. METHODS: Individualized face-to-face counseling was given to 1,555 employees (76.7% male; mean age = 42.3 years) by occupational physicians at four work-sites. After 3 years, a blinded assessment of the adequacy of the intervention was done. Implementation of the intended intervention by physicians was assessed as adequate in two work-sites (927 employees) and inadequate in the other two (628 employees). Observed changes in serum cholesterol were analyzed in the followed-up individuals. Follow-up rates at each work-site were 78.6% and 44.5% for the adequate intervention, and 85.5% and 60.4% for the inadequate intervention. Changes in serum cholesterol were controlled for potential confounding factors (pre-test levels of risk factors, age, sex, body mass index, educational level, marital status, physical activity and alcohol consumption) by multiple linear regression procedures. RESULTS: When the intervention was adequately performed, serum cholesterol was significantly lowered with a mean reduction of 14.3 mg/dl (95% C.I.: 11.0 to 17.6) in those employees with baseline levels > or = 200 mg/dl. CONCLUSIONS: Adequacy of implementation of work-site programs determines their long-term effectiveness in reducing mean serum cholesterol levels.
Asunto(s)
Colesterol/sangre , Salud Laboral , Adolescente , Adulto , Factores de Edad , Anciano , Consumo de Bebidas Alcohólicas , Terapia Conductista , Índice de Masa Corporal , Factores de Confusión Epidemiológicos , Consejo , Dieta , Escolaridad , Ejercicio Físico , Femenino , Estudios de Seguimiento , Humanos , Hipercolesterolemia/sangre , Hipercolesterolemia/dietoterapia , Hipercolesterolemia/prevención & control , Modelos Lineales , Lipoproteínas/sangre , Estudios Longitudinales , Masculino , Estado Civil , Persona de Mediana Edad , Actividad Motora , Educación del Paciente como Asunto , Factores Sexuales , EspañaRESUMEN
BACKGROUND: The feasibility of successfully reducing cardiovascular risk factors is supported by large studies. Nevertheless, controversy remains about the actual efficacy of some lifestyle interventions. This report assess the effectiveness of different levels of intervention at the work-site on blood pressure and smoking. METHODS: At the beginning of the program 1.193 men and 362 women were included in it. Individualized face-to-face counseling was given to employees by four different occupational physicians. After 3 years, 980 individuals remained in the study. The differences among the four groups allowed us to distinguish three different levels of intensity of interventions and a fourth group that was the reference one. Observed changes in blood pressure were compared using analysis of covariance. Adjusted odds ratio of smoking quit rates were calculated by logistic regression. RESULTS: Intensive intervention was significantly different from control group and the group of mild intervention. Moderate intervention was the only one to bring about a significant reduction of arterial blood pressures. This reduction was consistent with the lower threshold used in this group to classify diastolic blood pressure as high. Smoking quit rate was 22% for intensive and moderate interventions. Adjusted odds ratio for quitting smoking was 5.81 (95% CL 1.29-26.14) for moderate and 8.2 (IC 95% 1.75-38.46) for intensive intervention. CONCLUSIONS: A lower threshold for starting intervention measures on blood pressure is suggested to achieve better results. As the intensity of interventions was stronger, smoking quit rates were higher.