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1.
Rev Med Inst Mex Seguro Soc ; 61(6): 863-867, 2023 Nov 06.
Article in Spanish | MEDLINE | ID: mdl-37995383

ABSTRACT

Introduction: Macroglossia as a clinical manifestation of systemic amyloidosis is a rare condition, occurring in less than 9% of all types of amyloidosis. The aim of this report is to present the diagnostic approach of a patient with macroglossia, providing a systematic approach and considering relevant diagnostic possibilities during their evaluation. Clinical case: We present the case of a 60-year-old man who presented with a progressively enlarging giant tongue for six months, causing dysphagia and reduced oral opening. A tongue biopsy was taken, which histopathologically exhibited homogenous eosinophilic amyloid-like material. Congo red staining showed amyloid material with red dye under light microscopy and apple-green birefringence under polarized light. Bone marrow biopsy showed 30% plasma cells, allowing for a definitive diagnosis of soft tissue amyloidosis. Although it is a benign lesion, localized amyloidosis should be differentiated from systemic forms. Conclusions: The approach of patients with macroglossia is complex due to the diagnostic possibilities, from endocrinological causes, neoplastic, and even by deposit; Being an isolated sign in a patient is a challenge in its approach, because the involvement of the airway is the main complication to avoid in these patients.


Introducción: la macroglosia, como manifestación clínica de la amiloidosis sistémica, es una condición poco frecuente, ya que ocurre en menos del 9% de todos los tipos de amiloidosis. El objetivo de este informe es presentar el abordaje diagnóstico de un paciente con macroglosia, proporcionando un enfoque sistemático y considerando las posibilidades diagnósticas relevantes durante su evaluación. Caso clínico: presentamos el caso de un hombre de 60 años que presentó una lengua gigante de crecimiento progresivo durante seis meses, lo que causó disfagia y reducción en la apertura oral. Se realizó una biopsia de la lengua, la cual histopatológicamente exhibió material homogéneo similar a un amiloide eosinofílico. La tinción de rojo Congo mostró material amiloide con colorante rojo bajo microscopía óptica y con birrefringencia verde manzana bajo luz polarizada. La biopsia de médula ósea mostró un 30% de células plasmáticas, lo que permitió realizar un diagnóstico definitivo de amiloidosis de tejidos blandos. Aunque se trata de una lesión benigna, la amiloidosis localizada debe diferenciarse de las formas sistémicas. Conclusiones: el abordaje de pacientes con macroglosia es complejo, debido a las diversas posibilidades diagnósticas, que incluyen causas endocrinológicas, neoplásicas e, incluso, por deposición de sustancias. Cuando se presenta como un signo aislado en un paciente, se convierte en un reto en su abordaje, ya que la principal complicación a evitar en estos pacientes es el compromiso de la vía aérea.


Subject(s)
Amyloidosis , Deglutition Disorders , Macroglossia , Male , Humans , Middle Aged , Macroglossia/etiology , Deglutition Disorders/diagnosis , Deglutition Disorders/etiology , Amyloidosis/complications , Amyloidosis/diagnosis , Congo Red
2.
Biomédica (Bogotá) ; 43(Supl. 1): 77-88, ago. 2023. tab, graf
Article in Spanish | LILACS | ID: biblio-1533901

ABSTRACT

Introducción. El 65 % de las infecciones humanas son producidas por bacterias o levaduras, cuya capacidad de formar biopelículas las hace más resistentes a los antimicrobianos y antifúngicos. Objetivo. Determinar la capacidad de formación de biopelículas en aislamientos bacterianos y fúngicos por medio de los métodos cuantitativo de microtitulación con cristal violeta y cualitativo de cultivo en agar con rojo Congo. Materiales y métodos. Con el método cuantitativo, se utilizaron los medios de cultivo infusión cerebro-corazón, tripticasa de soya y Müeller-Hinton para aislamientos bacterianos; para levaduras, se usaron caldo infusión cerebro-corazón y Sabouraud dextrosa. Para el método cualitativo de cultivo en agar, se utilizaron los mismos medios de cultivo más una solución con 3 % de rojo Congo y 10 % de dextrosa. Cómo método de referencia, se utilizó la propuesta de Stepanovic et al. Resultados. Se evaluaron 103 aislamientos bacterianos y 108 de levaduras. No es recomendable sustituir el caldo infusión cerebro-corazón por los caldos tripticasa de soya y Müeller-Hinton en el método cuantitativo, para evaluar la formación de biopelículas en los aislamientos bacterianos. El medio Sabouraud dextrosa, en caldo y agar, puede sustituir al de infusión de cerebro-corazón para evaluar la formación de biopelículas en levaduras, tanto por el método cuantitativo como por el cualitativo. Conclusión. El estudio de las biopelículas en el laboratorio de microbiología, a partir del método cualitativo de cultivo en agar con rojo Congo, es un procedimiento sencillo, rápido y de bajo costo, que proporciona información útil para el diagnóstico y la terapéutica de infecciones persistentes causadas por bacterias y levaduras.


Introduction. Sixty-five percent of human infections are caused by bacteria or yeasts able to form biofilms. This feature makes them more resistant to antimicrobials and antifungals. Objective. To determine biofilm formation capacity of bacterial and fungal isolates by quantitative crystal violet microtiter and qualitative Congo red agar methods. Materials and methods. Brain-heart infusion, trypticase soy broth and Müeller-Hinton culture media were used in bacterial isolates for the quantitative method; brain-heart infusion broth and Sabouraud dextrose were used for yeasts. The same culture media plus 3% Congo red and 10% dextrose were used to apply the qualitative method in agar. The proposal by Stepanovic, et al. was used as a reference method. Results. We evaluated 103 bacterial isolates and 108 yeasts isolates. We did not recommend substitute brain-heart infusion broth for trypticase soy and Müeller-Hinton broths for biofilm formation assessment in bacterial isolates using the quantitative method. Sabouraud dextrose medium, both broth and agar, can replace brain-heart infusion to assess biofilm formation in yeasts, quantitatively and qualitatively. Conclusion. The study of biofilms in the microbiology laboratory, using Congo red agar qualitative method, is a simple, fast, and inexpensive procedure that provides precise information for the diagnosis and treatment of persistent infections caused by bacteria and yeasts.


Subject(s)
Gram-Negative Bacteria , Gram-Positive Bacteria , Yeasts , Biofilms , Congo Red
3.
Rev Esp Patol ; 55 Suppl 1: S59-S63, 2022 09.
Article in Spanish | MEDLINE | ID: mdl-36075665

ABSTRACT

Amyloid goitre is an infrequent benign entity characterized by a rapid increase in the size of the thyroid gland due to amyloid deposit in the parenchyma. Such an increase in size, which takes place over only a few months, can cause symptoms such as dyspnea, dysphagia and dysphonia. We present three cases diagnosed in the same centre and estimated its incidence. All cases showed similar morphology, with varying proportions of thyroid follicles, mature adipose tissue and amyloid. AA Amyloid accumulation was verified and associated to previous pathologies (Crohn's disease, juvenile rheumatoid arthritis and chronic renal disease). One case showed a papillary microcarcinoma. Amyloid goitre is an infrequent entity which should be considered in the differential diagnosis of all patients with goitre, especially those with chronic underlying diseases.


Subject(s)
Amyloidosis , Carcinoma, Papillary , Goiter , Thyroid Neoplasms , Amyloidosis/complications , Amyloidosis/diagnosis , Amyloidosis/pathology , Goiter/complications , Goiter/diagnosis , Humans , Thyroid Neoplasms/diagnosis
4.
Kasmera ; 48(1): e48119122019, ene-jun 2020.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1103154

ABSTRACT

Una de las principales consecuencias del desarrollo de biopelículas es la resistencia a los antifúngicos. Se determinó la formación de biopelículas por Candida parapsilosis sensu stricto aisladas de sangre y su perfil de susceptibilidad. Se evaluaron 30 cepas de C. parapsilosis sensu stricto de la Red de Candidemias del Dpto. de Micología del Instituto Nacional de Higiene Rafael Rangel-Venezuela, por el método cuantitativo en microplaca con tinción de cristal violeta y el método cualitativo en agar Sabouraud dextrosa suplementado con rojo Congo. Se utilizó el método de microdilución según el documento M-27 del Clinical and Laboratory Standards Institute. La formación de biopelículas de C. parapsilosis sensu stricto por el método cuantitativo fue de 63% y por el método cualitativo de 50%. El método cualitativo presentó valores de sensibilidad, especificidad, valores predictivos positivo y negativo de 61,1%, 23%, 78,6%, 43,8% respectivamente frente al método cuantitativo. Los aislados en forma planctónica fueron 100% sensibles a anfotericina B y caspofungina, con susceptibilidad variable a los azoles. El método cuantitativo es una técnica confiable para determinar la formación de biopelículas. El método cualitativo puede usarse como método pantalla inicial. No se encontró relación entre la susceptibilidad de las formas planctónicas y la capacidad de producción de biopelículas


One of the main consequences of biofilm development is resistance to antifungals. Biofilmforming by Candida parapsilosis sensu stricto isolated from blood and its susceptibility profile was determined. Thirty strains of C. parapsilosis sensu stricto belonging to the Candidemia Network of the Mycology Department of the Instituto Nacional de Higiene Rafael Rangel-Venezuela, were evaluated by microplate quantitative method with violet crystal staining, and Sabouraud dextrose agar supplemented with Congo red qualitative method. The microdilution method was used to determine the susceptibility, according to the Clinical and Laboratory Standards Institute M-27 document. Biofilm formation of C. parapsilosis sensu stricto by both quantitative and qualitative method was 63% and 50%, respectively. Sensitivity, specificity, and positive and negative predictive values of the qualitative method were 61.1%, 23%, 78.6%, and 43.8% respectively, when compared with quantitative method. Planktonic isolates were 100% sensitive to amphotericin B and caspofungin, with variable susceptibility to azoles. Quantitative method is a reliable assay to determine biofilm formation, while qualitative method can be used as an initial screening assay. No relationship was found between susceptibility of planktonic isolates and the ability to biofilm-forming

5.
Arch Soc Esp Oftalmol (Engl Ed) ; 95(5): 244-247, 2020 May.
Article in English, Spanish | MEDLINE | ID: mdl-32145978

ABSTRACT

A 35-year-old woman with progressive decrease of vision in both eyes and with no other associated symptoms, manifested as the only antecedent, the death of her brother due to amyloidosis. The visual acuity was counting fingers at 30 centimetres in the right eye and 20/70 in the left eye. In ophthalmoscopy of the right eye, a white, homogeneous vitreous, that was difficult to assess in detail, was observed, and in the left eye a whitish vitreous with band-like opacities in the cortical region. Vitrectomy was performed in the right eye, and a study with specific stains showed positive for amyloid material. A case is reported of amyloidosis diagnosed with specific stains in a vitreous sample for which the initial and only manifestation was the presence of vitreous opacities. The processing of these samples should be considered in patients with family history, early vitreous opacities, negative results of systemic biopsy, or atypical course of the disease.


Subject(s)
Amyloidosis, Familial/diagnosis , Eye Diseases/diagnosis , Vitreous Body , Adult , Female , Humans
6.
Rev. otorrinolaringol. cir. cabeza cuello ; 78(1): 78-83, mar. 2018. tab, ilus
Article in Spanish | LILACS | ID: biblio-902818

ABSTRACT

RESUMEN La amiloidosis es una enfermedad poco frecuente, de etiología desconocida, caracterizada por la presencia de depósitos extracelulares de proteínas fibrilares en diversos órganos y tejidos, teniendo una amplia gama de manifestaciones clínicas según localización y tamaño de los depósitos. En cabeza y cuello, el sitio de presentación más frecuente es la laringe. Suele presentarse con disfonía y/o disnea progresiva, cuyo tratamiento definitivo, sin estar estandarizado, suele ser la resección quirúrgica. Se presenta a continuación el caso de un paciente de 78 años, con historia de disnea en reposo y estridor laríngeo leve de 6 meses de evolución, cuya nasofibroscopía evidenció una masa subglótica, determinando lumen crítico de vía aérea superior. Biopsia reveló amiloidosis, siendo tratado de manera exitosa con exéresis tumoral vía laringoscopía directa.


ABSTRACT Amyloidosis is a rare disease of unknown etiology, characterized by the presence of extracellular acumulations of fibrillar proteins in a variety of organs and tissues, with a wide range of clinical manifestations depending on the location and size of the deposits. In head and neck, the most common site of presentation is the larynx. It usually presents with dysphonia and / or progressive dyspnea, whose definitive treatment, without being standardized, is usually surgical resection. A case of a 78-year-old patient with a history of dyspnea at rest and mild laryngeal stridor of 6 months of evolution is presented, whose nasofibroscopy showed a subglottic mass at the cricoid level, determining a critical upper airway lumen. Biopsy revealed extensive amyloidosis of the upper respiratory tract mucosa, being successfully treated with tumoral excision under direct laryngoscopy.


Subject(s)
Humans , Male , Aged , Laryngeal Diseases/surgery , Laryngeal Diseases/diagnosis , Amyloidosis/surgery , Amyloidosis/diagnosis , Laryngoscopy/methods , Dyspnea , Dysphonia
7.
Rev. chil. reumatol ; 34(3): 114-117, 2018.
Article in Spanish | LILACS | ID: biblio-1254226

ABSTRACT

Se presenta el caso clínico de una paciente de 63 años, con indicación de tiroidectomía total, a causa de un bocio multinodular con infiltrado neoplásico folicular. La evolución posquirúrgica fue tórpida y se caracterizó por la presencia de insuficiencia cardiaca aguda, hepatomegalia, neuropatía periférica y equimosis periorbitaria, condiciones clínicas sugerentes de amiloidosis, la que fue confirmada por medio de estudios como amiloidosis de cadenas ligeras (AL).


We present the clinical case of a 63-year-old patient, with indication of total thyroidec-tomy, due to a multinodular goiter with a follicular neoplastic infiltrate. Postoperative evolution was torpid and was characterized by the presence of acute heart failure, hepatomegaly, peripheral neuropathy and periorbital ecchymosis, clinical conditions suggestive of amyloidosis, which was confirmed by studies such as amyloidosis of light chains (AL).


Subject(s)
Humans , Female , Middle Aged , Immunoglobulin Light-chain Amyloidosis/diagnosis , Amyloidosis/diagnosis , Thyroidectomy , Biopsy , Congo Red , Amyloidosis/pathology , Neoplasms
8.
Arch Soc Esp Oftalmol ; 91(11): 556-558, 2016 Nov.
Article in English, Spanish | MEDLINE | ID: mdl-27091291

ABSTRACT

CASE REPORT: A 23-year-old man presented with a unilateral left ptosis of two years onset. After ineffective treatment for vernal conjunctivitis for several months, the biopsy demonstrated tarsal amyloidosis. Surgical resolution of the case was anatomically and functionally satisfactory. DISCUSSION: Ocular amyloidosis is a rare disease that must be suspected with infiltrative mass lesions. Biopsy is the diagnostic method. Treatment should be individualised.


Subject(s)
Amyloidosis/diagnosis , Conjunctival Diseases/diagnosis , Eyelid Diseases/diagnosis , Amyloidosis/complications , Amyloidosis/surgery , Blepharoptosis/etiology , Conjunctival Diseases/complications , Conjunctival Diseases/surgery , Conjunctivitis, Allergic/diagnosis , Diagnostic Errors , Eyelid Diseases/complications , Eyelid Diseases/surgery , Humans , Male , Young Adult
9.
Reumatol Clin ; 11(4): 242-3, 2015.
Article in English | MEDLINE | ID: mdl-25453598

ABSTRACT

We present the case of a 45-year-old woman, with two-year history of chronic renal insufficiency and proteinuria. A kidney biopsy showed the presence of AA amyloidosis (positive Congo red staining and immunohistochemistry). There was no evidence of amyloid deposits in other organs and there was no underlying disease. AA amyloidosis normally is secondary to chronic inflammatory or infectious diseases. High levels of IL-1, IL-6 and TNF-α play a role in the pathogenesis of amyloidosis and induce the synthesis of serum amyloid A protein (SAA), a precursor of tissue amyloid deposits. We empirically treated the patient with a low dose colchicine. The patient responded well. Colchicine has been used for the treatment of Familiar Mediterranean Fever and related auto-inflammatory diseases. To monitor treatment responses, we measured SAA finding low titers. Soon after treatment onset there were signs of improvement pertaining to proteinuria and stabilization of renal function.


Subject(s)
Amyloidosis/drug therapy , Colchicine/therapeutic use , Kidney Diseases/drug therapy , Tubulin Modulators/therapeutic use , Amyloidosis/diagnosis , Female , Humans , Kidney Diseases/diagnosis , Middle Aged
10.
Rev. chil. radiol ; 18(2): 59-61, 2012. ilus
Article in Spanish | LILACS | ID: lil-647001

ABSTRACT

Amyloid goiter is an atypical manifestation of amyloidosis. A case of a patient with rheumatoid arthritis history and sub-acute thyroid gland volume significantly increased is presented. Ultrasonographic and computed tomography findings were compatible with amyloid goiter. The aim of this study is to describe its radiologic features.


El bocio amiloide es una manifestación atípica de la amiloidosis. Se presenta el caso de una paciente con antecedentes de artritis reumatoide y aumento de volumen subagudo de la glándula tiroidea con hallazgos ultrasonográficos y por tomografía computada compatible con bocio amiloide. Se exponen sus características radiológicas, objeto de la presente comunicación.


Subject(s)
Aged , Amyloidosis/complications , Amyloidosis/diagnosis , Goiter/diagnosis , Goiter/etiology , Thyroid Gland/pathology , Tomography, X-Ray Computed , Ultrasonography
11.
Arq. ciênc. vet. zool. UNIPAR ; 7(2): 157-162, jul.-dez. 2004. ilus, tab
Article in Portuguese | LILACS | ID: lil-418093

ABSTRACT

A análise da morfologia dos espermatozóides do sêmen colhido de 30 pacus (Piaractus mesopotamicus) consistiu de três soluções fixadoras: formol salina tamponada (FS), citrato sódio diidratado a 3% (CS) e água destilado (Ag) e para corar as células espermáticas três corantes: Vermelho Congo (VC), Rosa Bengala (RB) e Williams-modificado (WM). As combinações de corantes e soluções fixadoras utilizadas foram: RB X FS, WM X FS, VC X FS, VC X Ag, WM X Ag, WM X CS e VC X CS. Na avaliação dos esfregaços levaram-se em consideração as alterações anatômicas, a eficiência do corante, a aglutinação e a sujidade. Quando o sêmen foi diluído em CS e Ag, os espermatozóides sofreram alterações anatômicas e aglutinação, inviabilizando a análise. O FS não gerou alteração anatômica e nem aglutinação dos espermatozóides, sendo possível avaliar a eficiência do corante. Ao analisar a combinação RB X FS verificou-se a melhor média estimada de 9,97 pontos (P<0,05), com baixa sujidade e boa eficiência do corante. A combinação WM X FS resultou na média estimada de 7,35 pontos e a do VC X FS de 6,83 pontos que foram valores menores (P<0,05) em comparação aos esfregaços da combinação RB X FS. De acordo com os resultados obtidos neste estudo, a combinação do RB X FS apresentou os melhores resultados, sendo recomendado preparar esfregaços para analisar a morfologia dos espermatozóides de pacus (Piaractus mesopotamicus).


The analyses of spermatozoa morphology from semen obtained from pacus (Piaractus mesopotamicus) consisted of three fi xers solution: formal-saline buffered (FB), 3 % sodium citrate diihydrated (SC) and distilled water (DW) and to stain the spermatic cells were used three dyeing: Congo red (CR), Bengal rose (BR) and Williams modifi ed (WM). Combinations of dyeing and fi xers solution were: BR x BF, WM x FB, CR x FB, CR x DW, WM x DW, WM x SC and CR x SC. In the rubbing brush stained evaluation was considered spermatozoa anatomic alterations, dyeing effi ciency, agglutination and dirtiness. For semen diluted in SC and DW was observed spermatozoa anatomic alterations and agglutination on the rubbing brush, becoming impossible any analyses. When semen was diluted in FB to prepare rubbing brush was not observed spermatozoa anatomic alterations and agglutination, becoming possible to evaluate dyeing effi ciency. In analyze of BR x FB combination was verifi ed the best estimate average of 9.97 points (P<0.05), showing reduced dirtiness and good effi ciency of dyeing. When combination was WM x FB the estimate average was 7.35 points and CR x FB was 6.83 points which were lower (P<0.05) than the average verifi ed in the rubbing brush stained with BR x FB. According to the results observed in this study, the best combination to evaluate spermatozoa morphology from pacus semen was rubbing brush stained with BR x FB combination.


El análisis de la morfologia de los espermatozoides del semen colectado de 30 pacus (Piaractus mesopotamicus) consistio en tres soluciones fi jadoras: Formol salina tamponada (FS), citrato sodio bihidratado al 3% (CS) y agua destilada (Ag) y para colorear las células espermáticas tres colorantes: Rojo Congo (VC), Rosa Bengala (RB) y Williams ­ modifi cado (WM). Las combinaciones de colorantes y soluciones fi jadoras utilizadas fueron: RB x FS, WB x FS, VC x FS, VC x Ag, WM x Ag, WM x CS y VC x CS. En la evaluación de los frotis se tuvo en cuenta las alteraciones anatómicas, la efi ciencia del colorante, la aglutinacion y la suciedad. Cuando el semen fue diluído en CS y Ag, los espermatozoides sufrieron alteraciones anatómicas y aglutinación, inviabilizando el análisis. El FS no generó alteracion anatómica ni aglutinación de losespermatozoides, siendo posible evaluar la efi ciencia del colorante. Al analizar la combinación RB x FS se verifi có la mejor média estimada de 9,97 puntos (P〈0,05) con baja suciedad y buena efi ciencia del colorante. La combinación WM x FS resultó en el promedio estimado de 7,35 puntos y la de VC x FS de 6,83 puntos que fueron valores menores (P〈0,05) en comparación a los frotis de la combinación RB x FS. De acuerdo con los resultados obtenidos en este estudio, la combinación de RB x FS presentó los mejores resultados, siendo recomendado para preparar frotis para analizar la morfologia de los espermatozoides de pacus (Piaractus mesopotamicus).


Subject(s)
Animals , Fisheries , Rose Bengal/analysis , Semen , Congo Red/analysis
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