ABSTRACT
BACKGROUND: The aim of this study was to investigate the effect of CYB2B6 (c.516G>T, rs3745274), CYP2C9 (c.1075A>C, rs1057910) and UGT1A9 (c.98T>C, rs72551330) polymorphisms on the pharmacokinetics of single-drug propofol in adult patients undergoing intravenous sedation. METHODS: In this prospective clinical study, a total of 124 patients undergoing anaesthesia with propofol, as a single drug, were evaluated when undergoing colonoscopy procedure. Clinical variables were obtained from the patient's anamnesis prior to performing the anaesthetic procedure, in the moment of the patient's loss of consciousness, during the colonoscopy exam (recorded every 5 min) and in the awakening time. RESULTS: Polymorphic genotypes for the rs3745274 and rs1057910 polymorphisms were associated with bispectral index, target-controlled infusion (TCI)/effector concentration of propofol and TCI/plasma concentration of propofol values. Based on multivariate analysis, it was observed that weight, age, surgery time, systolic blood pressure and the rs1057910 polymorphism corresponded to predictive values for the dose of propofol used. Weight (B = 4.807±0.897), age (B = 1.834±0.834) and duration of surgery (B = 8.164±1.624) corresponded to factors associated with increased propofol dose, while systolic blood pressure (B = -1.892±0.679) and the genotypes (AA vs CA) of the single nucleotide polymorphism (SNP) rs1057910 CYPP2C9 gene (B = -74.161±26.820) decreased the total dose of propofol used. CONCLUSION: We concluded that the rs1057910 and rs3745274 polymorphisms affect the metabolism of propofol in patients exclusively submitted to this drug. Thus, the knowledge of the polymorphic genotypes of the CYPP2C9 and CYB2B6 genes may be predictive of different metabolising phenotypes, suggesting expected behaviours of BIS parameter in the anaesthetic procedure, which contributes to safer monitoring by anaesthesiologists during the clinical intervention.
Subject(s)
Propofol , Humans , Cohort Studies , Cytochrome P-450 CYP2C9/genetics , Electroencephalography , Polymorphism, Single Nucleotide , Propofol/pharmacokinetics , Propofol/therapeutic use , Prospective Studies , Cytochrome P-450 CYP2B6/genetics , UDP-Glucuronosyltransferase 1A9/geneticsABSTRACT
BACKGROUND: The aim of this study was to investigate the effect of CYB2B6 (c.516G>T, rs3745274), CYP2C9 (c.1075A>C, rs1057910) and UGT1A9 (c.98T>C, rs72551330) polymorphisms on the pharmacokinetics of single-drug propofol in adult patients undergoing intravenous sedation. METHODS: In this prospective clinical study, a total of 124 patients undergoing anaesthesia with propofol, as a single drug, were evaluated when undergoing colonoscopy procedure. Clinical variables were obtained from the patient's anamnesis prior to performing the anaesthetic procedure, in the moment of the patient's loss of consciousness, during the colonoscopy exam (recorded every 5 min) and in the awakening time. RESULTS: Polymorphic genotypes for the rs3745274 and rs1057910 polymorphisms were associated with bispectral index, target-controlled infusion (TCI)/effector concentration of propofol and TCI/plasma concentration of propofol values. Based on multivariate analysis, it was observed that weight, age, surgery time, systolic blood pressure and the rs1057910 polymorphism corresponded to predictive values for the dose of propofol used. Weight (B = 4.807±0.897), age (B = 1.834±0.834) and duration of surgery (B = 8.164±1.624) corresponded to factors associated with increased propofol dose, while systolic blood pressure (B = -1.892±0.679) and the genotypes (AA vs CA) of the single nucleotide polymorphism (SNP) rs1057910 CYPP2C9 gene (B = -74.161±26.820) decreased the total dose of propofol used. CONCLUSION: We concluded that the rs1057910 and rs3745274 polymorphisms affect the metabolism of propofol in patients exclusively submitted to this drug. Thus, the knowledge of the polymorphic genotypes of the CYPP2C9 and CYB2B6 genes may be predictive of different metabolising phenotypes, suggesting expected behaviours of BIS parameter in the anaesthetic procedure, which contributes to safer monitoring by anaesthesiologists during the clinical intervention.
ABSTRACT
A colelitíase é a principal doença do trato biliarque afeta uma quantidade significativa da população, representando um problema de saúde pública mundial.(BECKER et al2013). No Brasil,é a doença abdominal cirúrgica mais comum, com cerca de 200.000internaçõesao ano pelo Sistema Único de Saúde(SUS). Ministério da Saúde -Sistema de Informações Hospitalares do SUS (SIH/SUS)Seu tratamento é cirúrgico podendo ser realizado de forma convencional ou por video cirurgia, que é o padrão ouro. (CASTRO; AKERMAN; MUNHOZ) 2014). Porém, a realidade do nosso sistema público de Saúde demonstra que a grande maioria dos procedimentos cirúrgicos realizados são colecistectomias convencionais. O que demanda a necessidade de um manejo anestésico apropriado para obter anestesia eficaz, segura,com controle da resposta neuro endócrina ao trauma e da dor pós-operatória. O objetivo deste estudo clínico, prospectivo,aleatoriamente distribuído e duplamente encoberto foi avaliar o uso da gabapentina por via oral como adjuvante da raquianestesia para controle da dor aguda em colecistectomia convencional...
The cholelithiasis is the main biliarytract disease that affects a significant amount of the population, an issue of global public health. In Brazil, is the most common surgical abdominal disease, with about 200,000 hospitalizations annually by the Unified Health System (SUS). The treatment is surgical and can be done conventionally or laparoscopic surgery, the is gold standardoption. But the reality of our public health system shows that the vast majority of surgical procedures performed are conventional cholecystectomy. What demand the need for appropriate anesthetic management for effective, safe anesthesia, with control of neuro endocrine response to trauma and postoperative pain. The objective of this clinical study, prospective, double-blind randomly distributed was to evaluate the use of gabapentin by mouth as an adjunct to spinal anesthesia for acute pain control in conventional cholecystectomy...
