Ming-Hui Cao

Publications of Ming-Hui Cao

• Laparoscopic cholecystectomy under epidural anesthesia: a retrospective comparison of 100 patients.

  Authors: Hong-Wei Zhang, Ya-Jin Chen, Ming-Hui Cao, Feng-Tao Ji

  The American surgeon. 01/2012; 78(1):107-10.

  There are limited data about laparoscopic cholecystectomy (LC) under epidural anesthesia. This retrospective comparative study aimed to evaluate on the feasibility and advantages of LC under epiduralThere are limited data about laparoscopic cholecystectomy (LC) under epidural anesthesia. This retrospective comparative study aimed to evaluate on the feasibility and advantages of LC under epidural anesthesia. In this retrospective comparative study, 100 patients (46 men and 54 women) with symptomatic cholelithiasis undergoing laparoscopic cholecystectomy using epidural anesthesia (EA) were compared with 100 patients undergoing laparoscopic cholecystectomy using general anesthesia (GA). Both groups were evaluated with regard to intraoperative mean arterial pressure, heart rate, operation time, duration of stay in the recovery room, and hospital cost. Laparoscopic operation was performed for 200 patients. Mean age of patients was 46.4 ± 6.9 years and 45.3 ± 6.8 years in EA and GA, respectively. Forty-six and 50 per cent of subjects were male in EA and GA, respectively. The mean operation time was 24 minutes and 25.58 minutes for EA and GA, respectively (P = 0.652). The duration of stay in the recovery room was significantly shorter in EA than that in GA (19.56 ± 2.55 minutes vs 56.27 ± 6.85 minutes, respectively; P = 0.0001). In the EA group, 23 patients (23%) had severe shoulder pain during surgery. After receiving pethidine intravenously, all these patients could subsequently undergo surgery smoothly. There were no complications or mortality in either group. Most of the patients regarded EA as a comfortable procedure. The mean hospital cost for the EA group was only three-fourths that of the GA group. LC under EA is feasible and safe in selected patients.

• Expression changes of parvalbumin and microtubule-associated protein 2 induced by chronic constriction injury in rat dorsal root ganglia.

  Authors: Ming-hui Cao, Feng-tao Ji, Ling Liu, Feng Li

  Chinese medical journal. 07/2011; 124(14):2184-90.

  Parvalbumin (PV), as a mobile endogenous calcium buffer, plays an important role in affecting temporospatial characteristics of calcium transients and in modulating calcium homeostasis. PV isParvalbumin (PV), as a mobile endogenous calcium buffer, plays an important role in affecting temporospatial characteristics of calcium transients and in modulating calcium homeostasis. PV is expressed in neurons in the dorsal root ganglion (DRG) and spinal dorsal horn and may be involved in synaptic transmission through regulating cytoplasm calcium concentrations. But the exact role of PV in peripheral sensory neurons remains unknown. Microtubule-associated protein 2 (MAP-2), belonging to structural microtubule-associated protein family, is especially vulnerable to acute central nervous system (CNS) injury, and there will be rapid loss of MAP-2 at the injury site. The present study investigated the changes of PV expressing neurons and the MAP-2 neurons in the DRG after an operation for chronic constriction injury to the unilateral sciatic nerve (CCI-SN), in order to demonstrate the possible roles of PV and MAP-2 in transmission and modulation of peripheral nociceptive information. Seventy-two adult male Sprague-Dawley (SD) rats, weighing 180 - 220 g, were randomly divided into two groups (36 rats in each group), the sham operation group and chronic constriction injury (CCI) group. Six rats in each group were randomly selected to receive mechanical and thermal sensitivity tests at one day before operation and 1, 3, 5, 7, and 14 days after surgery. After pain behavioral test, ipsilateral lumbar fifth DRGs were removed and double immunofluorescence staining was performed to assess the expression changes of PV and of MAP2 expressing neurons in the L5 DRG before or after surgery. The animals with CCI-SN showed obvious mechanical allodynia and thermal hyperalgesia (P < 0.05). Both the thermal and mechanical hyperalgesia decreased to their lowest degree at 7 days after surgery compared to the baseline before surgery (P < 0.01). In normal rats before surgery, a large number of neurons were MAP-2 single labeled cells, and just a small number of PV-expressed neurons were found. PV-positive neurons, PV-positive nerve fibers and PV-negative neurons, formed a direct or close contact for cross-talk. We used immunocytochemical staining to quantify the time course of changes to PV and MAP-2 expressing neurons in tissue, and found that the number of PV expressing neurons began to slightly decrease at 3 days after surgery, and had a significant reduction at CCI day 5, day 7 (P < 0.05). But MAP-2 neurons significantly decreased on just the 3rd day after CCI (P < 0.05). No changes in PV and MAP-2 expression were almost found in sham operated rats. The number of PV positive neurons, was positively correlated with the hyperalgesia threshold. A sharp decline in MAP-2 neurons may be the early response to surgical injury, and PV positive neurons were much more effective at affecting the changes of pain behaviors, indicating that the down-regulation of PV protein could participate in, at least in part, the modulation of nociceptive transmission.

• The effects of 2-aminoethoxydiphenyl borate and diphenylboronic anhydride on gap junctions composed of Connexin43 in TM₄ sertoli cells.

  Authors: Yan Yang, Ming-Hui Cao, Qin Wang, Dong-Dong Yuan, Li Li, Liang Tao

  Biological & pharmaceutical bulletin. 01/2011; 34(9):1390-7.

  2-Aminoethoxydiphenyl borate (2-APB) has recently been demonstrated to inhibit gap junction (GJ) channels, whereas the underlying mechanisms are still unknown. Using mouse TM₄ Sertoli cell which2-Aminoethoxydiphenyl borate (2-APB) has recently been demonstrated to inhibit gap junction (GJ) channels, whereas the underlying mechanisms are still unknown. Using mouse TM₄ Sertoli cell which expresses connexin43 (Cx43), we explored the effects of 2-APB and its analogues on dye-coupling through junctional channels formed by Cx43 and on expression of Cx43. Exposure of the cells to 2-APB (1-50 µM) and one of its analogues diphenylboronic anhydride (DPBA) (1-30 µM) for 4 h leads to a significant decrease in dye coupling of GJ in a concentration-dependent manner. The inhibitory effects of 2-APB and DPBA are reversible since decreased GJ coupling resumes after the two compounds are washed out. The disfunction of GJ induced by 2-APB and DPBA is associated with a decrease in total amount of Cx43 protein and number of GJs on the cell membrane. 2-APB and DPBA do not alter Cx43 phosphorylation state and the level of Cx43 mRNA expression. The loss of Cx43 protein is prevented by either lysosomal or proteasomal inhibitor, suggesting that the decrease in Cx43 results from a 2-APB or DPBA-enhanced degradation of Cx43. The present results indicate that 2-APB and DPBA inhibit GJ communication through decreasing Cx43 expression in TM₄ cells.

• A synthetic cell-penetrating peptide antagonizing TrkA function suppresses neuropathic pain in mice.

  Authors: Wei-Ying Ma, Eri Murata, Koyo Ueda, Yoshihiro Kuroda, Ming-Hui Cao, Mineo Abe, Kenji Shigemi, Munetaka Hirose

  Journal of pharmacological sciences. 01/2010; 114(1):79-84.

  Nerve growth factor (NGF) and its high-affinity receptor, TrkA, are one of the targets in the production of new drugs for the treatment of neuropathic pain. NGF contributes to both the initiation andNerve growth factor (NGF) and its high-affinity receptor, TrkA, are one of the targets in the production of new drugs for the treatment of neuropathic pain. NGF contributes to both the initiation and maintenance of sensory abnormalities after peripheral nerve injury. This study examined the effects of IPTRK3, a new synthetic cell-penetrating peptide that antagonizes TrkA function, on neuropathic pain in mice. Partial sciatic nerve ligation (PSNL) was used to generate neuropathic pain, and we injected IPTRK3 (2 or 10 mg/kg) intraperitoneally on day 7 after PSNL. Effects of the peptide on hyperalgesia, allodynia, and expression of Fos in the spinal cord were examined. Single administration of the peptide on day 7 significantly suppressed both thermal hyperalgesia and mechanical allodynia. Gentle touch stimuli-evoked Fos expression in the lumbar spinal cord was also significantly reduced. Intraperitoneal injection of a cell-penetrating peptide antagonizing TrkA function appears effective for treatment of neuropathic pain in a mouse pain model.

• [Effect of levosimendan on B-type natriuretic peptide levels in patients with advanced heart failure: a meta-analysis.]

  Authors: Zhong-Dong Xu, Wei-Xiong He, Yi-Fan Zhao, Shu-Xuan Xia, Bo He, Tao Yang, De-Xiong Cao, Shu-Ling Peng, Jue Li, Ming-Hui Cao

  Nan fang yi ke da xue xue bao = Journal of Southern Medical University. 10/2009; 29(10):2027-9.

  OBJECTIVE: To conduct a meta-analysis of the effect of levosimendan on B-type natriuretic peptide (BNP) levels and evaluate the therapeutic effect of levosimendan on advanced heart failure. METHODS:OBJECTIVE: To conduct a meta-analysis of the effect of levosimendan on B-type natriuretic peptide (BNP) levels and evaluate the therapeutic effect of levosimendan on advanced heart failure. METHODS: A meta-analysis was performed on the selected data to analyze the effect of levosimendan on BNP levels. RESULTS: Levosimendan decreased BNP by a mean of 337.66 [95%CI (-296.30, -379.02)] pg/ml 24 h after the administration, and by 259.92 [95%CI (-195.76, -324.08)] pg/ml at 48 h, and by 123.09 [95%CI(-53.32 ,-195.86)] pg/ml at 1 week. Levosimendan resulted in improvements of the cardiac function by about 29%, 22%, and 10% at 24 h, 48 h and 1 week after the administration. CONCLUSION: Levosimendan produces favorable effects on the cardiac functions and BNP levels.

• [Remifentanil preconditioning lowers cardiac troponin I levels in patients undergoing off-pump coronary artery bypass graft surgery.]

  Authors: Zhong-Dong Xu, Mu Jin, Wei-Xiong He, Shu-Xuan Xia, Yi-Fan Zhao, Bo He, De-Xiong Cao, Shu-Ling Peng, Jue Li, Ming-Hui Cao

  Nan fang yi ke da xue xue bao = Journal of Southern Medical University. 08/2009; 29(8):1554-6.

  OBJECTIVE: To investigate the value of cardiac troponin I (cTnI) levels in assessing myocardial protection by remifentanil precondition against myocardial injury induced by off-pump coronary arteryOBJECTIVE: To investigate the value of cardiac troponin I (cTnI) levels in assessing myocardial protection by remifentanil precondition against myocardial injury induced by off-pump coronary artery bypass (OPCAB). METHODS: Twenty-four patients undergoing OPCAB were randomized into control and remifentanil preconditioning group (n=12). All the patients received pretreatment with oral diazepam (10 mg), intramuscular morphine (10 mg) and hyosine (0.3 mg). General anesthesia was induced with midazolam (0.08 mg/kg), etomidate (0.1-0.3 mg/kg), fentanyl (5-10 microg/kg), and rocuronium (1 mg/kg), and maintained with isoflurane inhalation and propofol infusion. Intermittent fentanyl and pipecuronium were given intravenously. In remifentanil preconditioning group, remifentanil (5 microg/kg in 50 ml normal saline) was infused in 10 min after anesthesia induction, and only NS was administered in the control group. Blood samples were obtained before and at 0, 2, 6, 24, and 48 h after the operation to determine serum cTnI levels. RESULTS: In both of the two groups, the cTnI levels increased significantly at the postoperative time points (0, 2, 6, 24, and 48 h) as compared with those before the operation (P<0.05). The cTnI levels of remifentanil preconditioning group were markedly decreased after the operation in comparison with those of the control group (P<0.05). CONCLUISON: Remifentanil preconditioning decreases the cTnI levels and reduces myocardial injury induced by OPCAB.

• [Comparison of three analgesic methods for postoperative pain relief and their effects on plasma interleukin-6 concentration following radical surgery for gastric carcinoma].

  Authors: Xiao-heng Cai, Shou-ping Wang, Xiao-tong Chen, Shu-Ling Peng, Ming-Hui Cao, Xi-jiu Ye, Yong-zhi Yang

  Nan fang yi ke da xue xue bao = Journal of Southern Medical University. 03/2007; 27(3):387-9.

  To compare the efficacy of preemptive epidural analgesia combined with postoperative epidural analgesia, postoperative epidural analgesia alone and intravenous analgesia for postoperative pain reliefTo compare the efficacy of preemptive epidural analgesia combined with postoperative epidural analgesia, postoperative epidural analgesia alone and intravenous analgesia for postoperative pain relief and their effects on plasma interleukin-6 (IL-6) concentration following radical surgery for gastric carcinoma. Sixty-six patients with gastric carcinoma scheduled for gastrectomy were randomly divided into 3 groups, namely group P (n=22), group E (n=22) and group V (n=22), to receive preemptive epidural analgesia combined with postoperative epidural analgesia, exclusive postoperative epidural analgesia, and exclusive postoperative intravenous analgesia, respectively. Hemodynamic data were recorded for all the patients during the operation, and visual analogue scale (VAS) was used to assess the pain intensity at 4, 8, 16, 24, 48 and 72 h after surgery. Plasma IL-6 concentration was determined before surgery and at 24, 48, 72 h after surgery. No significant changes occurred in the hemodynamics during the preoperative periods. VAS and IL-6 were lower in group P than in group E and V, and group E had lower measurement than group V (P<0.05). Preemptive epidural analgesia combined with postoperative epidural analgesia provides more satisfactory pain relief and more effectively prevents IL-6 increment than exclusive epidural analgesia or intravenous analgesia after gastrectomy for gastric carcinoma.