Síndrome Baboon-like asociado a Parvovirus B19: A propósito de un caso en edad pediátrica / Baboon-like syndrome induced by Parvovirus B19: report of a pediatric case

Resumen El Parvovirus B19 constituye un agente viral frecuente como causa de exantemas en edad pediátrica. Responsable clásicamente del eritema infeccioso, en los últimos años se lo asoció también a erupciones cutáneas atípicas. Recientemente se ha descrito una forma de exantema periflexural asociado a distintos agentes virales, conocido como síndrome Baboon-like. Presentamos el caso de una niña de 9 años con evidencia serológica de infección aguda por Parvovirus 19 que desarrolló una erupción máculo-pápulo-petequial con lesiones acentuadas en grandes pliegues. Se realiza búsqueda de la literatura disponible en relación a los exantemas inusuales por Parvovirus y se describe el caso como síndrome simil Baboon, una manifestación cutánea de esta infección viral.

Abstract Parvovirus B19 is a common viral cause of exanthem in pediatric patients. Classically responsible for infectious erythema, in the last few years it has also been associated with atypical rashes. A form of periflexural eruption associated with viral agents has been recently described as Baboon-like syndrome. We present the case of a 9-years-old girl with serological evidence of acute Parvovirus B19 infection that developed a maculopapular-petechial rash with lesions in large folds. A review of the available literature in relation to unusual Parvovirus exanthem is performed and the case is described as Baboon - like syndrome, a cutaneous manifestation of this viral infection.

Case report-baboon syndrome with paracetamol

Adverse drug reaction (ADR) is defined as “any response to drug which is noxious or unintended and occurs at a dose normally used in man for prophylaxis, diagnosis or treatment of diseases or for modification of physiological function”. Among the ADRs reported, cutaneous drug reactions are most common. Symmetrical drug-related intertriginous and flexural exanthema (SDRIFE), also known as baboon syndrome (BS), is included in the spectrum of systemically induced allergic contact dermatitis. Characteristics of SDRIFE include a sharply defined symmetric erythema in the gluteal area and in the flexural or intertriginous folds without any systemic symptoms or signs. We present a case of 30-year-old female with baboon syndrome after taking the combination of paracetamol and diclofenac. Awareness of SDRIFE (BS) as an unusual drug reaction is especially important since the connection between skin eruption and drug exposure may easily be overlooked or misdiagnosed.

Olfactomedin-like 2 A and B (OLFML2A and OLFML2B) expression profile in primates (human and baboon)

BACKGROUND: The olfactomedin-like domain (OLFML) is present in at least four families of proteins, including OLFML2A and OLFML2B, which are expressed in adult rat retina cells. However, no expression of their orthologous has ever been reported in human and baboon. OBJECTIVE: The aim of this study was to investigate the expression of OLFML2A and OLFML2B in ocular tissues of baboons (Papio hamadryas) and humans, as a key to elucidate OLFML function in eye physiology. METHODS: OLFML2A and OLFML2B cDNA detection in ocular tissues of these species was performed by RT-PCR. The amplicons were cloned and sequenced, phylogenetically analyzed and their proteins products were confirmed by immunofluorescence assays. RESULTS: OLFML2A and OLFML2B transcripts were found in human cornea, lens and retina and in baboon cornea, lens, iris and retina. The baboon OLFML2A and OLFML2B ORF sequences have 96% similarity with their human's orthologous. OLFML2A and OLFML2B evolution fits the hypothesis of purifying selection. Phylogenetic analysis shows clear orthology in OLFML2A genes, while OLFML2B orthology is not clear. CONCLUSIONS: Expression of OLFML2A and OLFML2B in human and baboon ocular tissues, including their high similarity, make the baboon a powerful model to deduce the physiological and/or metabolic function of these proteins in the eye.

Regression and simulation models for human and baboon brain parameters / Modelo regresivo y simulación para los parámetros cerebrales humanos y del babuino

The variations in morphometric parameter of mammalian brains may be influenced by process of functional complexity, evolution and adaptation. Comparative analysis of linear measurements of cerebrum in the human and baboon has shown morphometric differences. In the present study linear measurements from human and baboon cerebrum (n=10 each) were used to predict various values for human and baboon brain and body parameters through multiple regression models. The average brain weights were found to be 2.08 percent and 0.84 percent of the body weights for humans and baboons respectively. The elasticity of regression models revealed that unit percentage increase in Occipital-Frontal (OF) distance would increase the human brain weight by 66.19 percent, while the baboon brain weight would increase by 7.63 percent. The unit percentage increase in the Height of Temporal Lobe (HTL) would increase the human brain weight by 16.28 percent, while the baboon brain weight would increase by only 0.28 percent. Unit percentage increase in Frontal-Temporal (FT) distance would decrease the human and baboon brain weights by 14.04 percent and 0.46 percent respectively. Inter-species values were also predicted through simulation techniques by using the ratios of model parameters with application of programming language Python. The OF, FT and HTL values for human were found to be 2.01 times, 1.55 times and 1.91 times respectively to that of baboon.

Las variaciones en los parámetros morfométricos del cerebro de los mamíferos pueden estar influenciadas por el proceso de complejidad funcional de la evolución y adaptación. Análisis comparativo de las mediciones lineales del cerebro en el humano y babuino han puesto de manifiesto las diferencias morfométricas. En este estudio las mediciones lineales del cerebro humano y babuinos (n = 10 cada uno) fueron utilizados para predecir los valores distintivos para el cerebro de humanos y monos babuinos y los parámetros del cuerpo a través de modelos de regresión múltiple. El peso medio del cerebro resultó ser 2,08 por ciento y 0,84 por ciento del peso corporal de los seres humanos y los babuinos, respectivamente. La elasticidad de los modelos de regresión reveló que el aumento de una unidad porcentual en la distancia occipital-frontal (DE) aumentaría el peso del cerebro humano en 66,19 por ciento, mientras que el peso del cerebro babuino se incrementaría en 7,63 por ciento. El porcentaje de aumento en la altura de lóbulo temporal (HTL) aumentaría el peso del cerebro humano en 16,28 por ciento, mientras que el peso del cerebro babuino aumentaría en sólo el 0,28 por ciento. Si aumenta la distancia frontal-temporal (FT) se reduciría el peso del cerebro humano y babuinos en 14,04 por ciento y 0,46 por ciento, respectivamente. También se prevéen valores entre las especies a través de técnicas de simulación, mediante el uso de proporciones de los parámetros del modelo con la aplicación del lenguaje de programación Python. Los valores humanos de DE, FT y HTL resultaron ser 2,01, 1,55 y 1,91 veces, respectivamente con respecto a la de los babuinos.

A new proposal for a clinical-oriented subclassifi-cation of baboon syndrome and a review of baboon syndrome.

Objective: To review baboon syndrome (BS). Data Sources: Date sources were obtained from PubMed and Google Scholar: Photographs of baboon syndrome were obtained from our patient. Study Selections: PubMed and Google Scholar were searched up to June 30, 2010. The search terms were “baboon syndrome”, “SDRIFE” and “thimerosal allergy”. Reverse references from relevant articles and Google Scholar were also used. As BS is a classical disease and cases of offending agents were relatively old, some references were more than five years old. In order to gather as many cases of offending agents as possible, more than 50 references were collected. Results and Conclusion: We divided BS into as 4 groups; classical baboon syndrome, topical drug-induced baboon syndrome, systemic drug-induced baboon syndrome and symmetrical drug-related intertriginous and flexural exanthema (SDRIFE). The pathomechanism of BS is still unknown. A delayed type of hypersensitivity reaction, a recall phenomenon, pharmacologic interaction with immune-receptors and anatomical factors may be involved in the causation of BS.

Tocolytic Effect of Morphine via Increased Metabolic Clearance of Oxytocin in the Baboon

Morphine is known to inhibit nocturnal uterine contractions in several animal models, and oxytocin is known to be a primary causative factor of uterine contractions. The purpose of the present study was to determine the tocolytic effect of morphine in relation to the pharmacokinetics of oxytocin, after a bolus injection of oxytocin. The metabolism of oxytocin was investigated during the third trimester in baboons. Four animals were placed on a tether system with venous and arterial access, including continuous uterine monitoring. Plasma oxytocin levels were determined by radioimmunoassay after extraction with petroleum ether/acetone. Morphine consistently increased the metabolic clearance rate of oxytocin in all four animals (p < 0.05) and this was in accordance with suppressed uterine contractions. We conclude that morphine could be used as an inhibitor of nocturnal uterine contractions, and that this is caused by the morphine induced increased metabolic clearance rate of oxytocin.

Three Cases of Baboon Syndrome / 대한피부과학회지

The Baboon syndrome is used to denote a characteristic distribution pattern of systernic allergic contact dermatitis. Diffuse erythema of the buttock, upper inner surface of the thighs and axillae are characteristic features. We report three cases of Eaboon syndrome developed after contact with mercury through breaking a clinical thermometer in a 30 year-old, 16 year-old, 32 year-old females, respectively. Mercury sensitivity was confirmed by a patch test in all three patients.

A case of baboon synrome due to mercury smoke of an amulet / 대한피부과학회지

Baboon syndrome is used to denote a systemic allergic contact dermititis with a characteristic color and distribution pattern. It is also referred to as mercury exanthem, because inhalation of mercury vapor usually causes the skiri lesion in a sensitized person. Diffuse pi,ikish erythema of the buttock, upper inner thigh, and axilla are characteristic features. We report a case of baboon syndrome developed after exposure to the smoke of a burning amulete a charm written on a piece of paper in a 12 year-old female. Mercury sensitivity was confirrned by a patch test. Atomic absorption by a spectrographic method and Scanning electron microscopy/energy dispersive for analysis X-ray detected mercury in the urine and the ed scraped pigments from the amulet, respectively.