Objective To explore the clinical efficacy of omeprazole,levofloxacin and metronidazole in the treatment of chronic gastritis caused by Helicobacter pylori.Methods 100 patients with chronic gastritis were selected as the research subjects.In accordance with digital table method,100 patients were randomly divided into the observation group and control group.Each group had 50 patients.The observation group was given triple therapy with omeprazole,levofloxacin and metronidasole.The control group was only given omeprazole.Results The total effective rate of the observation group was 94％,which was significantly higher than 82％ of the control group (x2 =7.37,P ＜ 0.05).The negative rate of Hp in observation group was 90％,which was significantly higher than 72％ of the control group (x2 =8.12,P ＜ 0.05).Conclusion The clinical efficacy of triple therapy of omeprazole,levofloxacin and metronidazole was better than the single therapy of omeprazole,which has significant effect,less adverse reactions.

OBJECTIVE:To establish an HPLC method for the determination of the contents of Ligustrazine in rat's plasma,brain and liver.METHODS:Ligustrazine was separated on Hypersil ODS-C18 column with aspirin as internal standard.The mobile phase consisted of methanol-1.5% glacial acetic acid solution(45∶55,V/V)at a flow rate of 1.0 mL?min-1.The UV detection wavelength was 279 nm.RESULTS:The linear range of ligustrazine in rat's plasma,brain and liver was 0.006 25～7.813 ?g?mL-1,The lowest detectable limits were 0.5 ng?mL-1,1.55 ng?mL-1,and 1.55 ng?mL-1 and the average recoveries were 97.26%,96.44%,and 95.43% respectively with RSD at 3.40%,4.19% and 4.94%,respectively.CONCLUSION:With good linearity,precision and recovery,the method is sensitive and simple,and suitable for pharmacokinetic study and the research of Ligustrazine preparation.

This article was aimed to study the sedative and hypnotic effects of different eluents of Shuangxiatang (SXT). The effects of SXT water decoction, water eluent, 20%, 70% and 95% alcohol eluent on spontaneous ac-tivity and the sleeping induced by subthreshold dose of pentobarbital sodium were measured. The results showed that the SXT decoction, 20% and 95% alcohol eluent can significantly decrease the number of rearing in mice with the percentage of 78.5%, 78.3% and 62.5%, respectively. SXT water eluent and 70% alcohol eluent can significantly decrease the spontaneous activity of mice (P < 0.01), the number of rearing (P < 0.01) and grooming time (P < 0.05). SXT water decoction can significantly shorten sleep latency (P < 0.05), prolong sleep time (P <0.05), and increase rates of sleeping in mice. SXT water eluent can significantly shorten sleep latency in mice (P< 0.05), increase rates of sleeping in mice. SXT water decoction and water eluent have the sedative and hypnotic effects. And the effects are more than alcohol eluents.

This study was aimed to observe the improvement of Qiju Runmu Tie (QRT) on experimental dry eye syndrome in rats. The fourth day after the bleomycin hydrochloride (8 g·mL-1) was injected into the intraorbital lacrimal gland (0.06 mL) and extraorbital lacrimal gland (0.12 mL), QRT of large, medium, and small dosage (0.276 g·mL-1, 0.138 g·mL-1, 0.069 g·mL-1) was applied on rat's eyes continuously for 10 days, once a day, 1 hour every time. Rats in the control group and model group were applied with a patch containing distilled water in the same operation. The tear secretions, time of tear film break-up and pathological changes of lacrimal gland were observed from the eleventh day to the thirteenth day after injection. The results showed that compared with the control group, bleomycin hydrochloride can induce atrophy of lacrimal gland, hyperplasia and decrease bubbly mucus in the acinar lumina, significant reduce of tear secretion, and significant shorten the time of tear film break-up. Compared with the model group, QRT can significantly increase the amount of tear secretion (P <0.05), extend the tear film break-up time (P < 0.01). And the medium dosage of QRT can obviously reduce lacrimal gland tissue injury. It was concluded that external application of QRT can improve symptoms of experi-mental dry eye syndrome in rats.

Objective:To investigate the significance of multicolor flow cytometry (MFC) monitoring of minimal residual disease (MRD) in the course of allogeneic hematopoietic stem cell transplantation (allo-HSCT) after CD19-chimeric antigen receptor(CAR)-T cell immunotherapy for patients with refractory, relapsed B-cell acute lymphoblastic leukemia (r/r B-ALL).Methods:37 patients with r/r B-ALL admitted to Hebei Yanda Lu Daopei Hospital from January to July 2019, aged 15 (6, 19) years old, including 24 males and 13 females, were treated with CD19-CAR-T cell immunotherapy bridging allo-HSCT. MFC with cytoplasmic CD79a antibody to set up B-cell gates was used to monitor patients′ bone marrow (BM), cerebrospinal fluid (CSF), and tissue samples on day 0 (prior to the CAR-T cell immunotherapy), day 15, day 28 post CAR-T cell immunotherapy, and post transplantation.The MRD values of these samples were analyzed to evaluate the residual tumor cells and metastasis. The killing effect of the CAR-T cells was evaluated by the recovery of CD19+B cells before transplantation and the period between the timepoint when CD19+B cells was recovered and the timepoint when CAR-T cells were infused. Peripheral blood CAR-T cells were counted at different time points. Statistic analysis was performed by Kaplan-Meie assay and Log-rank test to analyze the difference of univariate cumulative survival.Results:(1)Among the 37 patients, 8 died and 29 survived. 5 patients relapsed after transplantation, of which 4 relapsed patients died and 1 survived. (2)MFC MRD negative remission rate of the death group was lower than that of the survival group at the following time points: post-CAR-T therapy and prior to transplantation (5/8 vs. 28/29, χ 2=7.540, P=0.006); day 15 of the CAR-T cell reinfusion (3/8 vs. 24/29, χ 2=6.512, P=0.011); day 28 of the reinfusion (3/8 vs. 276/29, χ 2=10.065, P=0.002). The probability of extramedullary MFC MRD positive tumor infiltration in the death group was higher than that in the survival group(7/8 vs. 14/29, χ 2=3.931, P=0.047). After CAR-T cell immunotherapy, the recovery period of CD19-positive cells in the death group, or the time for CAR-T cells to kill CD19-positive cells, was shorter than that in the survival group [42.00 days(30.00,49.00) vs. 55.00 days(41.50,73.50), Z=0.022, P=0.020]. Conclusion:The positive results of MRD by MFC at the following timepoints may predict unfavorable outcomes, such as post-CAR-T therapy and prior to transplantation, day 15 and 28 of the CAR-T cell immunotherapy, which may provide some guidance for clinical management.

Objective:This study aims to analyze the counts (per kilogram of body weight) or percentages of transplanted lymphocyte subgroups in children with non-infectious pulmonary complications (NIPC) and air-leak syndrome (ALS) after allogeneic hematopoietic stem cell transplantation (allo-HSCT) and explore its significance in the progression of lung complications after transplantation.Methods:The patients with NIPC and ALS after allo-HSCT from January 2013 to December 2019 in Hebei Yanda Ludaopei Hospital were retrospectively studied and the influencing factors in the progress of NIPC after HSCT were statistically analyzed.Results:Of the 2026 children who received HSCT treatment, 59 patients (34 males and 25 females) developed NIPC, the probability was 2.9% (59/2 026), and the probability of combined ALS was 1.4% (28/206). The differences in the comparison between NIPC progressed to ALS group (ALS group) and failed to progress to ALS group (non-ALS group) in the patient′s age( P=0.028), disease condition before transplantation( P=0.022), NIPC onset time( P=0.004) were significant. The P values of the percentage of NKT-like cells in the bone marrow ( P=0.008) or peripheral stem cells ( P=0.003) accounted for the lymphocytes. CD4+CD25+dim cells in bone marrow ( P=0.029) or peripheral stem cells ( P=0.036) accounted for the CD4+lymphocytes and the ratio of CD4/CD8 in bone marrow( P=0.004) or peripheral stem cells ( P=0.020) were less than 0.05, which meant the differences in patients′ refusion cells were significant. In the binary logistic regression model, the percentage of bone marrow NKT-like cells to lymphocytes, the ratio of bone marrow CD4+/CD8+and the percentage of peripheral stem NK cells to lymphocytes were important risk factors for the progression of NIPC to ALS. The rest factors were excluded from the model (AUC=0.918, P<0.05). Conclusion:During allo-HSCT transplantation, a high proportion of NKT-like cell and NK cell levels, and a high CD4+/CD8+ratio in the infusion of donors with high immune tolerance have an important correlation with the progression of the NIPC.

Objective:To investigate the effectiveness of detecting MC B/P in PB by FCM for EBV+PTLD screening.Methods:481 patients with fever and large lymph nodes after allogenic hematopoietic stem cell transplantation (ALLO-SCT) in Ludaopi Hospital from 2018 to 2019 were retrospectively analyzed. The results of post-transplantation days, viral load (EBV, CMV) and MCB/P were detected. To evaluate the value of MC B/P in the diagnosis of PTLD by the sensitivity, specificity, positive predictive value and negative predictive. Logistic regression was used to analyze the clinical influencing factors of EBV-associated PTLD. The median fellow-up time was 449 days (range: 184 days to 700 days).Results:The diagnosis of PTLD was established in 51 patients. 55 patients who detecting MC B/P by FCM were positive. There were significant differences between the PTLD negative and positive groups in lymph node enlargement, age, EBV, CMV, monoclonal B cells, and monoclonal plasma cells ( P<0.05). Monoclonal plasma, monoclonal B and days after transplantation are important relationship with the diagnosis of PTLD, which have good diagnostic value for EBV-associated PTLD. Conclusion:FCM screening peripheral blood MC B/P has good diagnostic performance for EBV-associated PTLD. Monoclonal B, monoclonal plasma and the number of days of PTLD after transplantation were correlated with EBV-associated PTLD.

Examining mechanisms involved in the mutual regulation between the muscular system and the skeletal system, elucidating the key issues responsible for loss of muscle and bone mass and strength, and thus halting the progression of these conditions are critical measures for reducing fractures caused by falls and subsequent disability and mortality.At present, most studies have treated the muscular system and the skeletal system separately, often ignoring the mutual regulation and connections between them.This article reviews the current research progress on the mechanisms of interaction between the two systems, aiming to provide a basis for the prevention, diagnosis and treatment of disuse-related diseases in the elderly population.

Sarcopenia, referred to as myopenia, is a systemic syndrome characterized by decreased muscle mass and muscle strength, and decline of motor function.The elderly are a high incidence group of myopenia.With the aging of the world's population becoming increasingly severe, the incidence rate of sarcopenia has also increased, which has brought a heavy burden to the elderly family and society, and has become an important social health problem for the elderly.At present, there are more and more researches on sarcopenia, but the pathogenic factors of sarcopenia are complex and diverse.The prevention and treatment of sarcopenia still need to be further explored and studied.The establishment of an ideal animal model is the key premise and basis for the related research of sarcopenia.In this paper, the different modeling methods, advantages and disadvantages as well as the scope of application of sarcopenia animal models are described, which can provide reference and help for the subsequent animal experimental research of sarcopenia.

Objective:To explore the optimal index of rotational displacement of femoral neck fractures by modeling the axial rotational displacement of femoral neck fractures after reduction and based on X-ray projections.Methods:Six dry human femur specimens, comprising 2 males and 4 females, were utilized in the study. Design and manufacture a proximal femur ortholateral and oblique X-ray casting jigs and mounts. The femoral neck fracture was modeled on the femoral specimen, with Pauwells 30°, 50°, and 70° models (2 each) made according to Pauwells typing. The fractures were manually repositioned with residual anterior 20°, 40° and 60° axial rotational displacements. Each fracture model was projected at different angles (pedicled 40°, pedicled 20°, vertical 0°, cephalad 20°, and cephalad 40°), and the trabecular angle and Garden's alignment index of the model were measured to observe the imaging characteristics of the fracture line on the medial oblique and lateral oblique radiographs.Results:In the presence of a 20° and 40° anterior rotational displacement following reduction of a femoral neck fracture, the trabecular angle in the rotationally displaced group was not significantly different from that of the anatomically repositioned group in various projection positions. However, when a residual rotational displacement of 60° was present, the trabeculae appeared blurred at most projection angles in the Pauwells 30° and 50° models, failing to measure trabecular angles. In the Pauwells 70° fracture model, the trabecular angle in the rotational displacement group was significantly different from that in the anatomical reduction group. In anteroposterior radiographs, when the anterior rotation displacement was 60° in the Pauwells 70° group, Garden's contralateral index showed an unsatisfactory restoration (150°, 142°), whereas all rotationally displaced models in the Pauwells 30° and Pauwells 50° groups had a Garden's contralateral index of >155°, which achieved an acceptable restoration. In lateral radiographs, all rotational displacement models with Garden's alignment index>180° failed to achieve acceptable repositioning, and the larger the Pauwells angle the greater the Garden's alignment index at the same rotational displacement. In the internal oblique position with a bias towards the foot side, the image showed partial overlap between the femoral head and the shaft, making it difficult to assess the quality of the reduction. Conversely, when projected cephalad, the femoral neck appeared longer, particularly at a projection angle of 40° cephalad, allowing for clear observation of the fracture line and the anatomy of the proximal femur. The trabeculae were not well visualized in the external oblique position.Conclusion:There are limitations in applying the trabecular angle to assess the axial rotational displacement of the femoral head after reduction of femoral neck fractures. The Pauwells 70° with residual rotational anterior displacement of 60° was the only way to detect axial rotational displacement of the femoral head on anteroposterior radiographs Garden's alignment index. For the determination of axial rotational displacement of the femoral head, the Garden's alignment index on lateral radiographs provides higher reliability.