Objective To observe the effects of selective α2-adrenergic receptor agonist alpha-Methylnore-pinephrine(α-MNE) as a vasopressin agent on hemodynamics, troponin T(cTnT) and myocardium in the rabbit cardiopulmonary resuscitation. Method Eighteen health rabbits, weighing 2.5 - 3.5 kg, both male and female,were provided by Lanzhou institute of veterinary medicine. After setting up rabbit model of cardiopulmonary resuscitation, 18 rabbits were randomly divided into three groups. The rabbits in group A as a operation-control group were processed with anesthesia, endotracheal intubation, and surgery without ventricular fibrillation induced. The rabbits in group B as a epinephrine group were administered with 30 ug/kg epinephrineduring CPR. The rabbits in group C as a MNE group were administered with 100 ug/kg α-MNE during CPR. The left ventrictdar end-diastolic pressure(LVEDP), left ventricular pressure rise and fall rate(± dp/dt) and serum concentrations of BNP were measured. Statistic package of SPSS 10.0 was used for the data analysis and significant differences between means were evaluated by ANOVA analysis. Results Compared with group A, LVEDP of other two groups gradually increased respectively(P < 0. 01), and peak ± dp/dt decreased in other two groups(P<0.01). Increase in LVEDP in group C was less than that in group B(P<0.05), whereas peak ± dp/dt in group C were higher than that in group B(P<0.05), at the same stage. Compared with group A, the cTnT of the remaining two groups increased(P<0.01, respectively),and reached peak at 30 minutes. In group C, the elevation of cTnT was less than that in group B(P<0.05) during the same period. In group B and C, myocardial injury was seen under a light microscope, but the injury in group C was lighter than that in group B. Conclusion The methylnorepinephrine can lessen the myocardial dysfunction after CPR.

Objective To investigate the effects of α_2-adrenergic receptor agonist and k-opioid receptor agonist jointly used on hemodynamics and B-type natriuretic peptide in rabbits,and to explore the effective methods for lessensing post-resuscitation myocardial dysfunction.Method After the establishment of cardiopulmonary resuscitation (CPR) model in rabbits, 30 rabbits were randomly divided into 5 groups, namely epinephrine group(E), vasopressin group(V), U50488H group(U), mivazerol group(M) and mivazerol + U50488H group(M + U). Hemodynamics and B-type natriuretic peptide were examined before ventricular fibrillation and in the early stage of post CPR (30-240 min). Statistical analysis was performed with ANOVA techniques. Results (1)MAP,peak - dp/dt and peak + dp/dt in M + U group were significantly higher than those in other groups, and the increase of LVEDP was less than that in other groups (P<0.05).(2)The concentration of BNP in M + U group was significantly decreased than that in other groups (P <0.01 or P <0.05). Conclusions The α_2-adrenergic receptor agonist (mivazerol) and k-opioid receptor agonist used together can improve post CPR hemodynamics and reduce the concentration of B-type natriuretic peptide, lessening the post CPR myocardial dysfunction.

Objective To discuss the effects and the possible mechanismof curcumin on pulmonary functions and expression of TGF-β1 and NF-κB in paraquat-induced pulmonary fibrosis of rats.Methods SPF Wistar rats were randomly (random number) divided into three groups:paraquat-poisoned group (PQ group,with PQ 50 mg/kg by gavage),Curcumin-treatment group (PC group after 30,with curcumin (200 mg/kg) by intraperitoneal injection),and Blank group (B group,with same volume of sterile saline at the same time).After 14 d,the lung function of rats was observed,and the expression of TGF-β1 and NF-κB protein were detected by immunohistochemistry.Results The survival rates of mice significant difference in the PC and PQ groups with (70.83％ vs.41.67％,P ＜0.05).Compared with the B group,lung function index (Te,PIF,PEF,EF50,TV,F) of PQ group significantly decreased (P ＜ 0.05,P ＜ 0.01).Compared with the PQ group,lung function index (Te,PEF,TV,F) of PC group significantly increased (P ＜ 0.05 or P ＜ 0.01).There are some expression of lung tissues of rats with TGF-β1,NF-κB in B group.Compared with B group,PQ group significantly enhanced (P ＜0.01or P ＜0.05).Compared with the PQ,PC group significantly decreased (P ＜ 0.01 or P ＜ 0.05).Conclusions Curcumin can relieve paraquat-induced pulmonary fibrosis by inhibiting the over expression of TGF-β1,NF-κB in lung tissue of rats.

Objective To observe the effects of curcumin on pulmonary fibrosis and functions on paraquat (PQ)-challenged rats, and investigate the possible mechanism. Methods 108 SPF Wistar rats were divided into three groups according to random number sheet: normal saline (NS) control group, PQ model group and curcumin-treatment group. The rats in each group were subdivided into three subgroups according to different time points (3, 7, 14 days), with 12 rats in each subgroup. PQ-challenged models were reproduced by intragastrical administration of PQ solution 50 mg/kg, and those in NS control group were given the equal volume of NS. After 30 minutes, the rats in curcumin-treatment group were given 200 mg/kg of curcumin by intraperitoneal injection, and those in NS control group and PQ model group were given the equal volume of NS. At 3, 7, 14 days, the tidal volume (VT) was examined, and the blood was drawn from femoral artery for blood gas analysis. Then the rats were sacrificed and the lung tissues were harvested, the hydroxyproline (Hyp) content was measured by alkaline hydrolysis; the expression of transforming growth factor-β1 (TGF-β1) was determined by immuno-histochemistry; the distribution and the change of the pulmonary collagen fiber were observed after Masson staining. Results After exposure to PQ, the VT and arterial partial pressure of oxygen (PaO2) were decreased gradually, and the levels of Hyp and TGF-β1 were increased gradually, reaching the trough or the peak at 14 days, which were significantly lower or higher than those in NS control group [14-day VT (mL):1.52±0.33 vs. 2.81±0.47, 14-day PaO2(kPa): 5.87±0.95 vs. 14.15±1.02, 14-day Hyp (μg/mg): 3.12±0.06 vs. 1.14±0.05, 14-day TGF-β1 (integral A value): 29.72±4.27 vs. 4.15±0.52, all P < 0.01]. After intervene of curcumin, the parameters were significantly improved as compared with those of PQ model group [14-day VT (mL): 2.34±0.19 vs. 1.52±0.33, 14-day PaO2(kPa): 10.23±1.01 vs. 5.87±0.95, 14-day Hyp (μg/mg): 2.31±0.04 vs. 3.12±0.06, 14-day TGF-β1 (integral A value): 15.46±2.89 vs. 29.72±4.27, all P < 0.01]. It was shown by Masson staining that in PQ model group, with the PQ-poisoned time prolonging, diffused pulmonary fibrosis and a large number of collagen deposition were observed gradually, and the most serious collagen deposition was observed at 14 days; after intervene of curcumin, pulmonary fibrosis was alleviated significantly at different time points as compared with the PQ model group. Conclusion Curcumin can enhance the pulmonary function by reducing the deposition of collagen fiber and inhabiting pulmonary fibrosis of PQ-poisoned rats.

Objective To observe the effects of curcumin on the lung collagen area and the expression of TNF-α,IL-6 and NE in paraquat-poisoning rats at different intervals,and discuss the possible mechanism of curcumin antagonizing paraquat poisoning.Methods A total of 108 SPF Wistar rats were divided into three groups (random number):blank group (B group) for control,paraquat poisonin group (PQ group) and curcumin-treatment group (PC group).The rats of PQ group and PC group were given paraquat (50 mg/kg) by gavage,and the rats of B group were given equal volume of sterile saline solution at the same time.Thirty minutes later,the rats of PC group were given curcumin (200 mg/kg) by intraperitoneal injection,and rats of B group and PC group were given equal volume of sterile saline solution instead.At 3 d,7 d and 14 d after modeling,the distribution and pathological changes of lung tissue and collagen fiber were observed by HE and Masson staining.The concentration of tumor necrosis factor (TNF-α) and interleukin-6 (IL-6) were detected by enzyme-immunoassay.The lung neutrophil elastase (NE)expression was observed by immuno-histochemical method.Result Compared with B group,PQ group had pulmonary alveolitis in different degrees at different intervals,and the most serious pulmonary alveolitis was observed at 7 d after modeling.Diffused pulmonary fibrosis of the lung tissue and a large area of collagen fiber deposition were observed especially at 14 d after modeling,as well as the expression of NE was observed obviously,especially at 14 d after modeling.The concentration of TNF-α,IL-6 in serum were significantly increased (P ＜ 0.05,P ＜ 0.01).Compared with PQ group,the pulmonary alveolitis and fibrosis obviously in PC group with obvious reduction in the expression of NE and significant descrease in the concentrations of TNF-o and IL-6 (P ＜ 0.05).Conclusion Inhabiting inflammatory factors to alleviate the seriousness of alveolar inflammation and pulmonary fibrosis might be one of the mechanism of treatment with curcumin for paraquat poisoning rats.

Objective:To investigate the efficacy and safety of BeEAM (bendamustine+cytarabine+etoposide+melphalan) regimen in pretreatment of autologous hematopoietic stem cell transplantation for patients with lymphoma.Methods:The clinical data of 15 patients with lymphoma who underwent autologous hematopoietic stem cell transplantation after pretreatment with BeEAM regimen from January 2020 to February 2021 in Gansu Provincial Hospital were retrospectively analyzed. The transplant-related adverse reactions and hematopoietic reconstitution were evaluated.Results:During the pretreatment process of 15 patients, 13 patients had gastrointestinal adverse reactions such as nausea, vomiting and diarrhea, 2 patients had hypokalemia, and 1 patient had abnormal liver function, but all of them were grade 1-2, and no grade 3-4 adverse reactions occurred. One patient had poor platelet implantation, and the remaining 14 patients all achieved hematopoietic reconstruction. After transplantation, the median time of peripheral blood neutrophils and platelets good implantation in patients was 10 d (9-14 d) and 11 d (9-17 d), respectively. Until March 2021, all patients were alive during follow-up.Conclusions:The efficacy of BeEAM regimen in pretreatment of autologous hematopoietic stem cell transplantation for patients with lymphoma is good, and the adverse reactions are tolerable.

Objective:To investigate the impact of malnutrition diagnosed with Global Leadership Initiative on Malnutrition (GLIM) criteria on the outcomes of patients with primary gastrointestinal lymphoma (PGIL).Methods:Patients with PGIL admitted into Gansu Provincial People's Hospital from January 2014 to July 2022 were retrospectively enrolled. Nutritional risk screening was conducted using Nutritional Risk Screening 2002 (NRS 2002) scale, and malnutrition was diagnosed as per GLIM criteria. Kaplan-Meier survival analysis and multivariate Cox regression analysis were performed to investigate the effect of malnutrition as per GLIM criteria on the outcomes of PGIL patients.Results:A total of 82 patients were included. The phenotypic parameters, including body mass index (BMI), arm circumference, leg circumference and grip strength, were at significantly lower levels in the 28 malnourished patients, compared with the other non-malnourished patients. The median overall survival of patients with malnutrition as per GLIM criteria was 10 months, while that of patients without malnutrition was 41 months, showing significant differences between groups. The univariate analysis revealed that age, loss of muscle mass, tumor stage based on Lugano classification and malnutrition as per GLIM criteria were the impacting factors for survival in patients with PGIL. The multivariate analysis further demonstrated that tumor stage based on Lugano classification and malnutrition as per GLIM criteria were the independent impacting factors for survival in patients with PGIL.Conclusion:Malnutrition based on GLIM criteria is an independent risk factor for unfavorable outcomes in patients with PGIL and could be utilized as a prognostic indicator.

Objective:To investigate the early efficacy and safety of pomalidomide-based regimen in relapsed/refractory multiple myeloma (MM) in the real world.Methods:The clinical data of 15 patients with relapsed/refractory MM treated with pomalidomide-based regimen who were admitted to Gansu Provincial Hospital from January 2021 to July 2021 were retrospectively analyzed, and the early efficacy and safety were also evaluated.Results:There were 8 males and 7 females, and the median age of onset of 15 patients was 60 years (43-83 years); the median time for the diagnosis of relapse and refractory was 15 months (4-84 months). All 15 patients previously received bortezomib-based treatment regimens, 9 patients previously received lenalidomide treatment, and 7 cases received autologous hematopoietic stem cell transplantation. All patients received pomalidomide-based regimen combined with two-drug or three-drug regimen (pomalidomide combined with bortezomib,daratumumab,bendamustine, dexamethasone, cyclophosphamide or lenalidomide). The median treatment cycle was 2 cycles (2-4 cycles). After 2 cycles of treatment, the therapeutic efficacy was evaluated; the overall response rate was 73% (11/15), including 3 cases of complete remission, 3 cases of very good partial remission, and 5 cases of partial remission. Hematological toxicity occurred in 9 patients, of which 5 cases had grade 3-4 hematological toxicity, 4 cases had grade 1-2 hematological toxicity, and other adverse reactions were mild and tolerable.Conclusion:Pomalidomide-based regimen is effective and safe for relapsed/refractory MM patients.