Study Objective: To observe the effect of dexmedetomidine (DEX) on T-lymphocyte subsets and natural killer (NK) cells in the peripheral blood of perioperative patients with colorectal cancer. Design: A random double-b...Study Objective: To observe the effect of dexmedetomidine (DEX) on T-lymphocyte subsets and natural killer (NK) cells in the peripheral blood of perioperative patients with colorectal cancer. Design: A random double-blind control clinical study. Setting: A university hospital. Patients: Forty patients with colorectal cancer, ASA I-П. Interventions: All patients were randomly divided into a DEX group (n = 20) and a control group (n = 20). Before induction of anesthesia, epidural catheters were placed in the L1-L2 or T12-L1 intervertebral spaces. The DEX group received 1 μg/kg of DEX (200 μg/50 ml) intravenously for 15 min prior to the surgery, which was then infused at a rate of 0.5 μg/kg/h until 30 min before the end of the surgery. The control group received an intravenous infusion of saline (50 ml) instead of DEX during the same periods as the DEX group. All patients received routine anesthesia and postoperative analgesia. Measurements: Blood samples from all patients were collected at the following time points: before anesthesia (T0), 24 h after surgery (T1), 48 h after surgery (T2) and 72 h after surgery (T3). Changes in T-lymphocyte subsets (CD3+, CD4+, CD8+, CD4+/CD8+) and NK cells were determined by flow cytometry. Main Results: Compared with the control group, the percentages of CD3+ and CD4+ cells and the CD4+/CD8+ ratio in the DEX group increased significantly from T1 to T3展开更多
Objective:To investigate the effects of different doses of dexmedetomidine on inflammatory factors and T lymphocyte subsets in elderly patients undergoing laparoscopic surgery. Methods: from June 2016 to June 2017 in ...Objective:To investigate the effects of different doses of dexmedetomidine on inflammatory factors and T lymphocyte subsets in elderly patients undergoing laparoscopic surgery. Methods: from June 2016 to June 2017 in our hospital for laparoscopic surgery of 120 cases of elderly patients, were randomly divided into A group, B group, C group, D group of 30 cases, all patients underwent intravenous inhalational anesthesia, A, B, C in three groups were given dexmedetomidine before induction of anesthesia. Fixed loading dose of 0.5 μg/kg, after intubation respectively with dexmedetomidine 0.2 μg/(kg.h), 0.5 μg/(kg.h), 0.8 μg/(kg.h) after continuous infusion to surgery, D group at the same time with the same volume of physiological saline. Before induction of anesthesia (T0), 24 h after operation (T1), 72 h after operation (T2) of venous blood interleukin-1 were measured beta (IL-1 beta), interleukin -2 receptor (sIL-2R) and interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-alpha) and T lymphocyte subsets (CD3+, CD4+, D8+).Results: the T1 of the 4 groups of sIL-2R, IL-6, IL-1 beta, TNF-alpha and T0 levels were significantly higher than, and A group, B group and C group than in D group, B group and C group than in A group, B group and C group had no significant difference;group IL-1, sIL-2R, IL-6, TNF-beta and alpha level of T1 decreased significantly, and A group, B group and C group than in D group, B group and C group than in A group, B group and C group had no significant difference. T1 of the 4 groups of CD3+, CD4+, D8+, CD4+/CD8+ and T0 decreased significantly, and A group, B group and C group than in D group, B group and C group than in A group, B group and C group had no significant difference;T2 D group CD3+, CD4+, D8+, CD4+/CD8+ lower than T1, and A group, B group, C group, CD3+, CD4+, D8+, CD4+/CD8+ higher than that of D group, B group, C group, CD3+ CD4+, D8+, CD4+/CD8+ higher than that of A group, B group, C group no significant difference.Conclusion: Dexmedetomidine can inhibit the inflammatory reaction and improve the immune function in elderly patients undergoing laparoscopic surgery, and the effect of middle and high dose is more significant.展开更多
Objective: To investigate the effect of dexmedetomidin combined with intraspinal anesthesia on perioperative brain injury, stress hormone and T lymphocyte subsets in elderly patients undergoing hip replacement. Method...Objective: To investigate the effect of dexmedetomidin combined with intraspinal anesthesia on perioperative brain injury, stress hormone and T lymphocyte subsets in elderly patients undergoing hip replacement. Methods: A total of 106 elderly patients undergoing hip replacement were randomly divided into the observation group and the control group, 53 cases in each group. All patients received intraspinal anesthesia, and the observation group was given dexmedetomidine assisted anesthesia. The detection results of perioperative jugular bulb venous oxygen saturation (SjvO2), jugular oxygen content (CjvO2), cerebral arterial-venous oxygen content difference (D (a-jv) O2), cerebral oxygen extraction rate (CERO2), cerebral arterial oxygen content (CaO2), S-100β protein of internal jugular vein, norepinephrine (NE), adrenaline (E), cortisol (Cor) and T lymphocyte subsets were compared between the two groups. Results: The SjvO2, CjvO2and CaO2in the observation group at the time of 30 min in the operation and immediately after operation were significantly higher than those in the control group, while the D (a-jv) O2and CERO2were significantly lower than those in the control group. The S-100β protein at the time of 30 min in the operation in the observation group was significantly lower than that in the control group. The NE, E and Cor in the observation group at the time of 30 min in the operation and immediately after operation were significantly lower than those in the control group. The CD3+, CD4+, CD8+ and CD4+/CD8+in the observation group at the time of immediately after operation and 24 h after operation were significantly higher than those in the control group. Conclusion: Dexmedetomidine combined with intraspinal anesthesia can reduce perioperative brain injury, relieve stress response and improve the immune function of the elderly patients with hip replacement.展开更多
文摘Study Objective: To observe the effect of dexmedetomidine (DEX) on T-lymphocyte subsets and natural killer (NK) cells in the peripheral blood of perioperative patients with colorectal cancer. Design: A random double-blind control clinical study. Setting: A university hospital. Patients: Forty patients with colorectal cancer, ASA I-П. Interventions: All patients were randomly divided into a DEX group (n = 20) and a control group (n = 20). Before induction of anesthesia, epidural catheters were placed in the L1-L2 or T12-L1 intervertebral spaces. The DEX group received 1 μg/kg of DEX (200 μg/50 ml) intravenously for 15 min prior to the surgery, which was then infused at a rate of 0.5 μg/kg/h until 30 min before the end of the surgery. The control group received an intravenous infusion of saline (50 ml) instead of DEX during the same periods as the DEX group. All patients received routine anesthesia and postoperative analgesia. Measurements: Blood samples from all patients were collected at the following time points: before anesthesia (T0), 24 h after surgery (T1), 48 h after surgery (T2) and 72 h after surgery (T3). Changes in T-lymphocyte subsets (CD3+, CD4+, CD8+, CD4+/CD8+) and NK cells were determined by flow cytometry. Main Results: Compared with the control group, the percentages of CD3+ and CD4+ cells and the CD4+/CD8+ ratio in the DEX group increased significantly from T1 to T3
文摘Objective:To investigate the effects of different doses of dexmedetomidine on inflammatory factors and T lymphocyte subsets in elderly patients undergoing laparoscopic surgery. Methods: from June 2016 to June 2017 in our hospital for laparoscopic surgery of 120 cases of elderly patients, were randomly divided into A group, B group, C group, D group of 30 cases, all patients underwent intravenous inhalational anesthesia, A, B, C in three groups were given dexmedetomidine before induction of anesthesia. Fixed loading dose of 0.5 μg/kg, after intubation respectively with dexmedetomidine 0.2 μg/(kg.h), 0.5 μg/(kg.h), 0.8 μg/(kg.h) after continuous infusion to surgery, D group at the same time with the same volume of physiological saline. Before induction of anesthesia (T0), 24 h after operation (T1), 72 h after operation (T2) of venous blood interleukin-1 were measured beta (IL-1 beta), interleukin -2 receptor (sIL-2R) and interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-alpha) and T lymphocyte subsets (CD3+, CD4+, D8+).Results: the T1 of the 4 groups of sIL-2R, IL-6, IL-1 beta, TNF-alpha and T0 levels were significantly higher than, and A group, B group and C group than in D group, B group and C group than in A group, B group and C group had no significant difference;group IL-1, sIL-2R, IL-6, TNF-beta and alpha level of T1 decreased significantly, and A group, B group and C group than in D group, B group and C group than in A group, B group and C group had no significant difference. T1 of the 4 groups of CD3+, CD4+, D8+, CD4+/CD8+ and T0 decreased significantly, and A group, B group and C group than in D group, B group and C group than in A group, B group and C group had no significant difference;T2 D group CD3+, CD4+, D8+, CD4+/CD8+ lower than T1, and A group, B group, C group, CD3+, CD4+, D8+, CD4+/CD8+ higher than that of D group, B group, C group, CD3+ CD4+, D8+, CD4+/CD8+ higher than that of A group, B group, C group no significant difference.Conclusion: Dexmedetomidine can inhibit the inflammatory reaction and improve the immune function in elderly patients undergoing laparoscopic surgery, and the effect of middle and high dose is more significant.
文摘Objective: To investigate the effect of dexmedetomidin combined with intraspinal anesthesia on perioperative brain injury, stress hormone and T lymphocyte subsets in elderly patients undergoing hip replacement. Methods: A total of 106 elderly patients undergoing hip replacement were randomly divided into the observation group and the control group, 53 cases in each group. All patients received intraspinal anesthesia, and the observation group was given dexmedetomidine assisted anesthesia. The detection results of perioperative jugular bulb venous oxygen saturation (SjvO2), jugular oxygen content (CjvO2), cerebral arterial-venous oxygen content difference (D (a-jv) O2), cerebral oxygen extraction rate (CERO2), cerebral arterial oxygen content (CaO2), S-100β protein of internal jugular vein, norepinephrine (NE), adrenaline (E), cortisol (Cor) and T lymphocyte subsets were compared between the two groups. Results: The SjvO2, CjvO2and CaO2in the observation group at the time of 30 min in the operation and immediately after operation were significantly higher than those in the control group, while the D (a-jv) O2and CERO2were significantly lower than those in the control group. The S-100β protein at the time of 30 min in the operation in the observation group was significantly lower than that in the control group. The NE, E and Cor in the observation group at the time of 30 min in the operation and immediately after operation were significantly lower than those in the control group. The CD3+, CD4+, CD8+ and CD4+/CD8+in the observation group at the time of immediately after operation and 24 h after operation were significantly higher than those in the control group. Conclusion: Dexmedetomidine combined with intraspinal anesthesia can reduce perioperative brain injury, relieve stress response and improve the immune function of the elderly patients with hip replacement.
