Harmine, a β-carboline alkaloid, is widely distributed in the plants, animals as well as in human tissues and body fluids. Harmine has various types of pharmacological activities including antimicrobial, antiplasmodial, antioxidative, antitumor, antimutagenic, antidiabetic, vasorelaxant and central excitation properties. Moreover, it can exert regenerative and protective effects on bone and cartilage tissues by regulating the proliferation, differentiation and metabolism of osteoclasts, osteoblasts and chondrocytes. These features make harmine a novel candidate for the prevention and treatment of bone and cartilage diseases, such as osteoporosis, bone fracture and osteoarthritis.
To explore the diagnosis and surgical treatment for pancreatic vasoactive intestine polypeptide tumor (VIPoma).
Clinical data of 7 patients with VIPoma from Xiangya Hospital, Central South University between January 1990 and July 2011 were collected and analyzed retrospectively.
The different operation modes were selected according to the location of VIPomas, and the postoperative symptoms of all 7 patients were gradually relieved and cured. The follow up showed that life spans of the above-mentioned patients were 3-6 years.
The incidence of pancreatic VIPoma is low but it is easy to misdiagnose. The excision for the tumor is the most effective therapy. Combining with somatostatin, intervention and other effective strategies, the life quality of patients can be improved and long-term survival may be achieved.
To investigate the clinical effect of total cystectomy and W-shaped orthotopic ileal neobladder for bladder cancer.
Total cystectomy and W-shaped orthotopic ileal neobladder were performed on 29 male patients and 3 female patients. After the cystectomy, 35-40 cm terminal ileal segment was isolated to make W-shaped orthotopic ileal neobladder. Bilateral uretero-ileal anastomoses were constructed by nipple technique, urethral stump was sutured to the lowest portion of the ileal pouch.
All surgeries were completed successfully. Patients were able to void by increasing the abdominal pressure, daytime continence rate was 87.5% and nighttime continence rate was 78.1%. The mean neobladder capacity was 410.6 mL and the mean postvoid residual urine was 22.7 mL at 6 months. After the surgery, ileal neobladder leakage occurred in 3 (9.4%) patients, mild ileus occurred in 2 (6.3%) patients, ileo-urethral anastomosis stricture developed in 1(3.1%) patient, and dysuria occurred in 3 (9.4%) patients because of the mucus. THe complications were treated properly and satisfactory results were obtained. Erection was preserved in 5 of the 9 male patients with normal erectile function, and normal sexual function was preserved in 1 female patient who underwent uterus-sparing cystectomy. The mean follow-up was 15 months. One patient died of distant metastasis and pneumonia, while other patients survived without tumor.
Total cystectomy and W-shaped orthotopic ileal neobladder have the advantages of voiding through the native urethra, satisfactory continence, low complication rates of upper urinary tract damage and electrolyte imbalance. W-shaped orthotopic ileal neobladder may be considered as the first option of urinary diversion after cystectomy. Postoperative management should focus on complications and follow-up.
To determine the role of miR-155 in the pathogenesis of generalized myasthenia gravis (GMG) and the effect of dexamethasone (DXM) on miR-155.
The expression of miR-155 in B cells from the GMG patients and healthy controls was analyzed by qPCR. The B cells were cultured with DXM and PBS. The B cell proliferation was examined by MTT; CD80 and CD86 frequencies were detected by flow cytometry; and anti-AChRIgG and isotypes anti-AChR-IgG1, 2, 3 in the supernatant were detected by ELISA.
qPCR revealed that the expression of miR-155 in the B cells was much higher than that in the controls, and the miR155 expression decreased after DXM treatment. flow cytometry showed that there was no significant difference in the proliferation and the expressions of CD80 and CD86 in the B cells between the DXM group and the PBS group. The concentration of anti-AChR-IgG1 was obviously lower in the DXM group than in the PBS group, but the concentration of anti-AChRIgG, anti-AChR-IgG2, and anti-AchR-IgG3 was similar.
high expression of miR-155 may be associated with myasthenia gravis progression. DXM may disturb the antibody class switch of B cells by suppressing the expression of miR-155 and improve the symptom of MG patients.
To determine the antioxidization and antiproliferation of extract from leaves of Toona sinensis (LTS).
The total phenolic extract of LTS was obtained by solvent and polyamide resin to determine the content. The antioxidization of the LTS extract was measured by TOSC assay. Antiproliferation was studied in vitro with different human cancer cells.
The total phenolic content in the LTS was (427.53±4.31) mg/g and antioxidization was 807.64 μmoL vitamin C equivalents/g in the sample. The extract significantly inhibited the colon cancer cell Caco-2, human liver cancer cell HepG(2) and breast cancer cell MCF-7 proliferation with EC(50) (4.00±0.39), (153.16±13.49) and (193.46±14.68) μg/mL, respectively. The bioactivity index (BI) of the LTS extract was nearly 283. Caco-2 was more sensitive than MCF-7 and HepG(2).
Extract from LTS has anticancer properties useful for preventing chronic diseases.
To study the change of inflammatory factors at different stages of colorectal cancer (CRC).
Thirty normal subjects, 30 patients with colorectal adenomatous polyps and 120 CRC patients at different stages were enrolled. IgG, IgM, and IgA levels, the inflammatory cytokines IL-2, 4, 6, 10, and 12 and the expression of TGF-β 1 and VEGF in the serum were analyzed by ELISA or immunoturbidimetry.
The serum concentrations of IL-12, TGF-β 1, and IL-6 in the CRC patients were statistically different compared with the normal and adenomatous polyps, and increased as the disease progressed (P0.05). The serum level of IgG, IgM, and IgA in the 3 groups showed no significant difference (P>0.05).
The serum level of inflammatory cytokines TGF-β 1, IL-6, and IL-12 increases gradually with the development of CRC, which may change the microcirculation of patients with CRC, and promote the development of CRC.