RESUMO

Due to the high transfusion volume, polytransfused patients with sickle cell disease (SCD) and beta-thalassemia are constantly exposed to parenterally transmitted infections. Currently, we have little information about the virome of such patients and how the virological composition might be influenced by the hemotherapy procedures that these patients receive. The objective of this study was to compare the viral diversity between these two groups with respect to the viral abundance and how it might be affected by the specific conditions of these groups. We sequenced by next-generation sequencing (NGS) and compared the virome of 30 patients with beta-thalassemia major, 45 with SCD, and 16 blood donors from the Blood Center of Ribeirão Preto, Brazil. Predominantly, commensal viruses including Torque teno virus (TTV) genotypes and human pegiviris-1 (HPgV-1) were identified in each group. Strikingly, while HPgV-1 reads were dominant in the SCD group, thalassemic patients showed high TTV abundance, expressed both in viral reads and genotypes. We speculated that the commensal virome of polytransfused patients might be influenced by the transfusion frequency and disease characteristics and that commensal viruses might be used as important genetic biomarkers for these hematological disturbances. Nevertheless, more specific studies are necessary to confirm a relationship between blood virome and transfusion treatment.

RESUMO

Due to the high transfusion volume, polytransfused patients with sickle cell disease (SCD) and beta-thalassemia are constantly exposed to parenterally transmitted infections. Currently, we have little information about the virome of such patients and how the virological composition might be influenced by the hemotherapy procedures that these patients receive. The objective of this study was to compare the viral diversity between these two groups with respect to the viral abundance and how it might be affected by the specific conditions of these groups. We sequenced by next-generation sequencing (NGS) and compared the virome of 30 patients with beta-thalassemia major, 45 with SCD, and 16 blood donors from the Blood Center of Ribeirão Preto, Brazil. Predominantly, commensal viruses including Torque teno virus (TTV) genotypes and human pegiviris-1 (HPgV-1) were identified in each group. Strikingly, while HPgV-1 reads were dominant in the SCD group, thalassemic patients showed high TTV abundance, expressed both in viral reads and genotypes. We speculated that the commensal virome of polytransfused patients might be influenced by the transfusion frequency and disease characteristics and that commensal viruses might be used as important genetic biomarkers for these hematological disturbances. Nevertheless, more specific studies are necessary to confirm a relationship between blood virome and transfusion treatment.

RESUMO

Se presenta el caso de un masculino de 33 años de edad, portador de cuatro hernias discales, que fue sometido a una instrumentación, donde perdió tres litros de sangre y recibió múltiples transfusiones, al día después inició con dolor y alteración de la sensibilidad en la pierna izquierda, por lo que lo vuelven a intervenir ya que un tornillo estaba mal posicionado. Fue dado de alta. A los dos días presentó hematemesis, epistaxis e ictericia, fue llevado al hospital donde falleció por un shock hipovolémico, debido a una ruptura del bazo. La ruptura atraumática del bazo, es conocida por ser una entidad infrecuente, que puede ocurrir en ausencia de factores de riesgo como el trauma o alguna patología de fondo.

Case of a 33 years old male bearing four discs hernias who went through surgical instrumentation, where he lost 3 liters of blood and received multiple transfusions. Next day reported pain and sensitivity alteration on the left leg; returns to surgery because one bold was not well positioned. Released from the hospital, and two days later returned with hematemesis, epistaxis, and jaundice, went back to the hospital where he died from a hypovolemic shock due to a spleen rupture. The non-traumatic spleen rupture is very infrequent in absence of risk factors, such as trauma or a base pathology.

Assuntos

RESUMO

El síndrome de von Hippel-Lindau es una enfermedad caracterizada por el desarrollo de tumores como hemangioblastomas del sistema nervioso central y de la retina, quistes renales, hepáticos y pancreáticos; carcinoma renal de células claras, feocromocitoma, así como adenomas en el oído interno, la nariz y la laringe. En la mayoría de los casos hay un antecedente familiar positivo del síndrome 8. A continuación se presenta el caso de una femenina de 35 años de edad, sin antecedentes personales patológicos conocidos, con antecedente familiar positivo por la enfermedad de von Hippel-Lindau. Según la historia de sus familiares, la mujer presentaba “ataques de rigidez” de dos semanas de evolución, posterior a uno de estos ataques fue atendida por paramédicos quienes la declararon fallecida. Según la autopsia médico legal se diagnosticó una hidrocefalia obstructiva secundaria a hemangioma cerebeloso y hallazgos compatibles con el Síndrome de von Hippel-Lindau. El objetivo de este artículo es resaltar los hallazgos postmortem de esta entidad y su relación con la causa de la muerte.

Von Hippel-Lindau syndrome is characterized by tumors as central nervous system and retinal hemangioblastomas; renal, liver and pancreas cysts; clear cells renal carcinoma, pheochromocytoma and adenomas of the ear, nose and larynx. In most cases there is a positive family history of the syndrome 8. The follow case is about a female how was 35 years old without known medical history. She had a positive family history of von Hippel-Lindau, and her family told us about she had “stiffness attacks” and two weeks later had another stiffness attack so it was treated by paramedics who declared her dead. In agreement with the forensic autopsy findings the diagnosis was hydrocephalus induced by brain stem hemangioma and the findings were compatible with von Hippel-Lindau. The aim of this article is to highlight the most important postmortem findings of this syndrome and its relation to the cause of death.

Assuntos