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1.
J Dev Behav Pediatr ; 33(4): 365-8, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22566031

RESUMO

Brian is an 11-year-old boy who presented to the emergency room with suicidal ideation and hearing voices. In the preceding weeks, he had escalating symptoms of oppositional defiant disorder, attention-deficit hyperactivity disorder (ADHD), and bipolar disorder. His medical history was notable for complex partial epilepsy with onset at age 4 that had been well controlled with divalproate. He had several mental health diagnoses by various practitioners including oppositional defiant disorder, ADHD, and bipolar disorder. Brian's family and social history was notable for the absence of identifiable risk factors for seizures or psychiatric problems. Over the course of a week-long psychiatric hospitalization, his complaints of depression and hearing voices seemed incongruent with his behavior. His parents endorsed a long history of Brian manipulating family and friends, such as conning his friends into stealing money and giving it to him. There was increasing suspicion that Brian was contriving his presenting symptoms for secondary gains. When his parents visited, he consistently bargained for prized items such as a long sought after cell phone and his own bedroom to improve his mood. His prior diagnoses (ADHD, a mood disorder, and oppositional defiant disorder) did not capture what seemed to be his core problem--an ability and willingness to manipulate others for his own self-serving purposes. Three months later, he was seen in the pediatric neurology clinic for increased seizure frequency. In the interim, he had several very serious altercations including setting fire to his family church, an attempted break-in-and-entry, assaulting his principal and resisting the arresting officer, and a malicious planned attack on his father where he struck him in the head with a crescent wrench "in cold blood, without any emotion."


Assuntos
Transtorno da Personalidade Antissocial/diagnóstico , Epilepsia Parcial Complexa/complicações , Córtex Pré-Frontal/anormalidades , Transtorno da Personalidade Antissocial/etiologia , Transtorno do Deficit de Atenção com Hiperatividade/diagnóstico , Transtornos de Deficit da Atenção e do Comportamento Disruptivo/diagnóstico , Transtorno Bipolar/diagnóstico , Criança , Epilepsia Parcial Complexa/fisiopatologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Testes Neuropsicológicos , Ideação Suicida
2.
J Dev Behav Pediatr ; 31(3 Suppl): S126-9, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20414064

RESUMO

CASE: Sonia's mother was concerned about her 9-year old daughter's aggression, defiant behavior, and distractibility. When she was 4-years, she kicked her bother and he lost a tooth as a result of the trauma. At this time, her pediatrician was concerned about hyperactivity, impulsivity, and defiance of authority and recommended a psychological evaluation. Sonia's father refused an evaluation and responded by physically abusing his wife while demanding a transfer to a new physician. Sonia's mother left her husband at this time and moved away with Sonia. Spousal abuse occurred frequently before the separation, and Sonia may have been physically abused as well. Currently, Sonia is in third grade where she is underperforming in many areas. She enjoys drawing and reading, but struggles to sit quietly and stay on task. Her teacher reports frequent vocal and physical disruptions. Homework takes an inordinate amount of time to complete. She does not have a sustained friendship; her mother feels that this is because other kids do not like being bossed by Sonia. Her mother is concerned about Sonia's behavior especially the unremorseful disruptive behavior toward her younger brother and grandmother. Sonia was born after an uneventful full-term pregnancy without evidence of maternal smoking, drugs, alcohol, or medications. Motor and social developmental milestones were achieved at the appropriate time. Language milestones were achieved early; her mother recalls that Sonia learned to read at the age of 3 years. Sonia's medical history is significant for obesity, seasonal allergic rhinitis, and delayed sleep onset with prolonged awakenings associated with nightmares. Her mother reports that Sonia "worries about everything," including thoughts that her brother will turn into a monster. When an argument occurs at home, she "gets scared," bites her nails, and cries. Sonia currently lives with her mother, 2 younger brothers, step-father, and grandparents. Family history is significant for drug abuse by her father and mental illness in the father's family. While conducting an interview with her mother, Sonia was asked to draw a picture of her family. Instead, she illustrated a book detailing her past experience in words accompanying each drawing. She described how she watched her father physically abuse her mother and her persistent fear of danger when conflict occurred at home. Although spelling was poor, her vocabulary, sequencing, and illustrations demonstrated above age-level skills for written expression and drawing. Examples of the writing that accompanied the drawings include: "I hate when my parents fight. I get scared and feel sick to my tummy like I want to throw up. I just hate that feeling!" "My mom told me she had a 'boyfriend.' These words were the most horrible I ever heard. Soon a nightmare began. Nightmares make me very, very scared."

3.
J Agric Food Chem ; 58(4): 2337-46, 2010 Feb 24.
Artigo em Inglês | MEDLINE | ID: mdl-20108898

RESUMO

Total protein and protein-associated mannan concentrations were measured, and individual proteins were identified during extraction into model wines over 9 months of aging on the yeast lees following completion of fermentations by seven wine strains of Saccharomyces cerevisiae. In aged wines, protein-associated mannan increased about 6-fold (+/-66%), while total protein only increased 2-fold (+/-20%), which resulted in a significantly greater protein-associated mannan/total protein ratio for three strains. A total of 219 proteins were identified among all wine samples taken over the entire time course. Of the 17 "long-lived" proteins detected in all 9 month samples, 13 were cell wall mannoproteins, and four were glycolytic enzymes. Most cytosolic proteins were not detected after 6 months. Native mannosylated yeast invertase was assayed for binding to wine tannin and was found to have a 10-fold lower affinity than nonglycosylated bovine serum albumin. Enrichment of mannoproteins in the aged model wines implies greater solution stability than other yeast proteins and the possibility that their contributions to wine quality may persist long after bottling.


Assuntos
Proteínas Fúngicas/análise , Taninos/análise , Vinho/análise , Leveduras/genética , Animais , Catequina/análise , Bovinos , Parede Celular/química , Parede Celular/metabolismo , Fermentação , Ligação de Hidrogênio , Lectinas de Plantas/análise , Riboflavina/análise , Saccharomyces cerevisiae/genética , Saccharomyces cerevisiae/metabolismo , Soroalbumina Bovina/metabolismo , Taninos/metabolismo , Vitaminas/análise , Leveduras/metabolismo
4.
J Dev Behav Pediatr ; 30(5): 474-7, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19823142

RESUMO

CASE: Sonia's mother was concerned about her 9-year old daughter's aggression, defiant behavior, and distractibility. When she was 4-years, she kicked her bother and he lost a tooth as a result of the trauma. At this time, her pediatrician was concerned about hyperactivity, impulsivity, and defiance of authority and recommended a psychological evaluation. Sonia's father refused an evaluation and responded by physically abusing his wife while demanding a transfer to a new physician. Sonia's mother left her husband at this time and moved away with Sonia. Spousal abuse occurred frequently before the separation, and Sonia may have been physically abused as well.Currently, Sonia is in third grade where she is underperforming in many areas. She enjoys drawing and reading, but struggles to sit quietly and stay on task. Her teacher reports frequent vocal and physical disruptions. Homework takes an inordinate amount of time to complete. She does not have a sustained friendship; her mother feels that this is because other kids do not like being bossed by Sonia. Her mother is concerned about Sonia's behavior especially the unremorseful disruptive behavior toward her younger brother and grandmother.Sonia was born after an uneventful full-term pregnancy without evidence of maternal smoking, drugs, alcohol, or medications. Motor and social developmental milestones were achieved at the appropriate time. Language milestones were achieved early; her mother recalls that Sonia learned to read at the age of 3 years.Sonia's medical history is significant for obesity, seasonal allergic rhinitis, and delayed sleep onset with prolonged awakenings associated with nightmares. Her mother reports that Sonia "worries about everything," including thoughts that her brother will turn into a monster. When an argument occurs at home, she "gets scared," bites her nails, and cries. Sonia currently lives with her mother, 2 younger brothers, step-father, and grandparents. Family history is significant for drug abuse by her father and mental illness in the father's family.While conducting an interview with her mother, Sonia was asked to draw a picture of her family. Instead, she illustrated a book detailing her past experience in words accompanying each drawing. She described how she watched her father physically abuse her mother and her persistent fear of danger when conflict occurred at home. Although spelling was poor, her vocabulary, sequencing, and illustrations demonstrated above age-level skills for written expression and drawing. Examples of the writing that accompanied the drawings include: "I hate when my parents fight. I get scared and feel sick to my tummy like I want to throw up. I just hate that feeling!" "My mom told me she had a 'boyfriend.' These words were the most horrible I ever heard. Soon a nightmare began. Nightmares make me very, very scared."


Assuntos
Arte , Violência Doméstica/psicologia , Família , Transtornos Mentais/diagnóstico , Resiliência Psicológica , Criança , Feminino , Humanos , Transtornos Mentais/terapia , Maus-Tratos Conjugais
5.
J Org Chem ; 69(8): 2741-9, 2004 Apr 16.
Artigo em Inglês | MEDLINE | ID: mdl-15074922

RESUMO

Kinetics and stereochemical studies have been carried out on the reactions of the Z and E isomers of O-methylbenzohydroximoyl halides [1Z and 1E, ArC(X)=NOCH(3)] with sodium methoxide in 9:1 DMSO-methanol. The reactions of methoxide ion with hydroximoyl fluorides (X = F) are stereospecific. The reaction with 1Z (X = F) gives only the Z substitution product (1Z, X =OCH(3)). The reaction of methoxide ion with 1E (X = F) is less selective, giving ca. 85% E substitution product. The Hammett rho-values for the Z and E isomers (X = F) are +2.94 and +3.30, respectively. The element effects for 1Z (Ar = C(6)H(5)) are 2.21 (X = Br):1.00 (X = Cl):79.7 (X = F). The 1E element effects are (Ar = C(6)H(5)) 1.00 (X = Cl):18.3 (X = F) and (Ar = 4-CH(3)OC(6)H(4)) 1.97 (X = Br):1.00 (X = Cl):12.1 (X = F). The entropies of activation for these reactions are negative (for example, DeltaS() = -15 eu for 1Z and DeltaS() = -14 eu for 1E, Ar = 4-CH(3)OC(6)H(4), X = F). These experimental observations are consistent with a mechanism proceeding through a tetrahedral intermediate. Ab initio calculations were carried out to help explain the stereospecificity of these reactions. These calculations indicate that the tetrahedral intermediate from the Z isomer undergoes rapid elimination to the Z substitution product before stereomutation can take place. These calculations also show that the lowest barrier for rotation around the carbon-nitrogen single bond in the tetrahedral intermediate derived from 1E leads to an intermediate that eliminates fluoride ion to give E product.


Assuntos
Hidrocarbonetos Halogenados/química , Metanol/química , Cinética , Estrutura Molecular , Oximas/síntese química , Oximas/química , Estereoisomerismo
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