Objective To observe the eotaxin expression of rat airway smooth muscle cells ( ASMCs) induced by serum from asthmatic rats, and explore the possible mechanism. Methods ASMCs isolated fromrat tracheas were cultured in vivo. Then they were treated with serum from asthmatic rats, or treated with serum and dexamethasone simultaneously. The level of eotaxin protein in supernatant and eotaxin mRNA in ASMCs were measured by ELISA and reverse transcription-polymerase chain reaction. The expression of cAMP in ASMCs was examined by radioimmunoassay. Results After the treatment with sensitized serum, the eotaxin level in supernatant and mRNA expression in ASMCs were significantly higher [ ( 107. 09 ±7. 12) ng/L vs. ( 0. 63 ±0. 56) ng/L, P lt; 0. 05; 1. 39 ±0. 04 vs. 0. 05 ±0. 01, P lt;0. 05] , and the level of cAMP in ASMCs was significantly lower compared with the control group [ ( 17. 58 ±3. 62) ng/L vs. ( 32. 39 ±3. 36) ng/L, P lt; 0. 05] . After intervened by the sensitized serum and dexamethasone simultaneously, the protein and mRNA expressions of eotaxin were lower compared with those intervened by sensitized serumalone [ ( 64. 18 ±4. 04) ng/L and 0. 77 ±0. 19] . The level of eotaxin in supernatant was negatively correlated with cAMP level in ASMCs ( r = - 0. 788, P lt; 0. 01) . Conclusions There is anautocrine function in ASMCs as inflammatory cells after stimulation with sensitized serum. Eotaxin may play an important roll in the pathogenesis of asthma via a cAMP-dependent pathway.
ObjectiveTo explore the pathogenesis of acute pancreatitis during pregnancy, differential diagnosis, and standardized treatment.
MethodsThe related literatures at home and abroad in recent years were reviewed, and the progress of pathogenesis and treatment of acute pancreatitis during pregnancy were summarized.
ResultsThe common cause of acute pancreatitis during pregnancy include biliary system diseases, hyperlipidemia, hyperparathyroidism, the direct effect of pregnancy on the pancreas, etc. According to the different pathogenic factors of acute pancreatitis during pregnancy, the laparoscopic cholecystectomy (LC), endoscopic retrograde cholangiopancreatography (ERCP), low-fat diet combined with Omega-3 fatty acids, parathyroid adenoma resection, or terminal pregnancy could be use.
ConclusionAcute pancreatitis during pregnancy is dangerous, the cause, general condition of patients, and the growth of fetus should be give full consideration, and the diagnosis and treatment are standardized.
ObjectiveTo understand the role of metformin on reducing incidence of type 2 diabetes mellitus (T2MD) patients complicated with liver cancer.
MethodThe related literatures of metformin treated patients with T2MD complicated with liver cancer at home and abroad in recent years were reviewed.
ResultsA large number of epidemiological and clinical data showed that the metformin might prevent the occurrence of the T2MD patients complicated with liver cancer, its mechanism was mainly inhibited the proliferation of hepatoma cells through the ATM-LKB1-AMPK-mTOR pathway, PI3K/Akt/mTOR pathway, or miRNA. The current controversy was the authenticity of the data, the influencing factors included the aging problem and characteristics of metformin user. The prospective study design rigorous remained to be clarified.
ConclusionMetformin could reduce the incidence of T2MD patients complicated with liver cancer, and could inhibit the growth of liver cancer cells, which provides a new way of thinking for the comprehensive treatment of liver cancer.
Hip fracture in the elderly is a disease with a high mortality rate and a high complication rate. Its main treatment method is surgery. The concept of enhanced recovery after surgery runs through the perioperative period of elderly patients with hip fracture. Elderly patients with hip fracture should be scheduled for surgery as soon as possible after admission to enhance postoperative functional recovery. Preoperative ambulation and postoperative exercise can reduce postoperative complications and mortality, shorten the length of hospital stay, and promote functional recovery.