AIM:To investigate the role of peripheral blood leukocytes and polymorphonuclear neutrophils (PMNs) on intestinal injury following mesenteric ischemia/reperfusion (IR) in rats. METHODS: Twenty adult, male Sprague-Dawley rats, weighing 200-230 g, were randomly divided into two groups. The control group (CON) consisting of 10 rats was subjected to laparotomy and separation of superior mesenteric artery (SMA) only. The ischemia/reperfusion (IR) group consisting of 10 rats, was subjected to laparotomy, followed by occlusion of the superior mesenteric artery (SMA) by an atraumatic microvascular clamp for 30 min. At the end of ischemic period in IR, the microvascular clamp was removed and the intestinal segment was reperfused for 60 min. The pathological changes of the ileal mucosal tissue were evaluated. The apoptosis of intestinal mucosal epithelial cells was examined by terminal deoxylnucleotidy-l transferase mediated-dUTP nick end-labeling (TUNEL). The enzymatic activity of casapse-3 in mucosal cells was determined using a colorimetric assay. The percentages of apoptotic peripheral blood leukocytes and PMNs were measured by flow cytometry using Annexin-V/PI double staining assay. The numbers of peripheral blood leukocytes in each animal was measured at baseline, 30 min of ischemia, and 30 min and 60 min of reperfusion. RESULTS: (1) Compared to CON group animals, the most severe mucosal injury was observed in IR group under optical microscope. (2) The number of apoptotic mucosal epithelia cells and enzymatic activity of caspase-3 were significantly higher in IR than those in CON group (P

A 33-year-old male patient with tick-borne encephalitis (TBE) was reviewed, who presented with severe neurological deficits following TBEV infection, and improved in his motor and quality of life after an individualized rehabilitation.

Objective:To confirm the possible pathogen causing an outbreak of respiratory infectious disease in Beijing.Methods:Oropharyngeal swabs were collected from 14 cases with fever and detected by RT-PCR for respiratory viruses and bacteria. For specimens positive for adenoviruses, Fiber, Hexon and Penton gene fragments were amplified with specific primers and sequenced. BLAST and phylogenetic tree were used for sequence analysis.Results:All of the 14 specimens were adenovirus-positive. BLAST analysis of the sequences of Fiber, hexon and Penton genes showed that the 14 cases were all caused by adenovirus 3. The phylogenic tree analysis indicated that this adenovirus was closely related to an adenovirus of 3a51 genotype (GenBank No: KF268123) isolated in the USA in 2007.Conclusions:Human adenovirus genotype 3a51 caused this outbreak of respiratory infectious disease in Beijing.

Objective To study the influencing factors of clinical outcome in elderly acute ischemic stroke (AIS) patients after intravenous thrombolysis.Methods One hundred and fifty-one AIS patients admitted to our hospital for intravenous thrombolysis were divided into good outcome group (n=77) and poor outcome group (n=74) according to their modified Rankin scale score 3 months after the onset of AIS.The baseline data,thrombolysis time window,NIHSS score and ischemic stroke typing before thrombolysis,early symptom improvement,cerebral hemorrhage after thrombolysis were compared between the two groups.Results The serum levels of blood glucose and CRP,NIHSS score≥9 before thrombolysis,incidence of AF and cerebral hemorrhage were significantly higher in poor outcome group than in good outcome group (P＜ 0.05,P＜0.01).Multivariate logistic regression analysis showed that NIHSS score,OCSP typing,blood glucose before thrombolysis,24 h symptom improvement were the independent influencing factors of clinical outcome in elderly AIS patients (OR =1.262,95 ％ CI:1.075-1.482,P =0.005;OR =0.203,95％CI:0.066-0.628,P=0.006;OR=1.264,95％CI:1.042-1.532,P=0.017;OR=25.764,95％CI:5.131-129.361,P=0.000).Conclusion NIHSS score,OCSP typing,blood glucose before thrombolysis and 24 h symptom improvement are the independent influencing factors of clinical outcome in elderly AIS patients after intravenous thrombolysis.

Objective: To identify the risk factors and clinical features associated with the interstitial pneumonia in diffuse large B-cell lymphoma (DLBCL) patients treated with rituximab, cyclophosphamide, doxorubicin, vincristine and prednisone (RCHOP) or rituximab, cyclophosphamide, liposomal doxorubicin, vincristine and prednisone (RCDOP) regimens. Methods: A retrospective study was conducted in 836 patients with DLBCL admitted to the Department of Hematology at Ruijin Hospital from 2013 to 2018. Among them, 114 patients were treated with RCDOP regimen. Using the method of propensity score matching according to age, gender, IPI score of patients, 114 patients treated with RCHOP regimen were selected as controls. Clinical data, including comorbidities, gender, age, B symptoms, international prognostic index (IPI) score, disease stage, serum lactic dehydrogenase (LDH) and β₂ microglobulin (β₂-MG) level were collected and the risk factors of interstitial pneumonia were further analyzed. Results: The interstitial pneumonia developed more frequently in RCDOP group than RCHOP group (28.95% vs 2.60%, P<0.01) . As the dose of liposomal doxorubicin elevated from 25-30 mg/m² to 35-40 mg/m², the incidence of interstitial pneumonia accordingly increased from 17.30% to 38.71% (P<0.05) . By multivariate analysis, disease stage was an independent factor of interstitial pneumonitis. Conclusions Front line regimens containing liposomal doxorubicin in DLBCL patients link to a higher incidence of dose-dependent interstitial pneumonia. Prevention and surveillance should be emphasized in future studies.

Objective: To observe whether the history of solid tumors affects the treatment response and survival situation of patients with diffuse large B-cell lymphoma (DLBCL) . Methods: A retrospective study was conducted in 836 patients with DLBCL who were treated in the Department of Hematology at Ruijin Hospital from 2013 to 2018. Among them, 34 DLBCL patients who had the history of solid tumors were classified into double cancer group. From 802 patients without history of solid tumors, 68 DLBCL patients were selected as control group, using 1∶2 matching on propensity scores for age, gender, IPI score and etc. All patients included in the study had follow-up interviews through medical record and telephone for mortality from any cause. Treatment response and 3-year overall survival (OS) and progression-free survival (PFS) of two groups were analyzed. Results: The complete remission rates after RCHOP (Rituximab+Cyclophosphamide+Vincristine+Adriamycin 50 mg/m² or Epirubicin or Liposome Adriamycin+Prednisone) regimen were 79.4% and 67.6% in the double cancer group and the control group, respectively (P=0.210) . Among the 102 patients, 6 patients died in the double cancer group while 24 patients died in the control group and the median survival time of both two groups were not reached. The 3-year OS were (74.7±9.5) % and (63.5±6.1) % (χ²=2.791, P=0.095) , while 3-year PFS were (72.1±8.8) % and (54.3±6.4) % (χ²=1.400, P=0.237) in the double cancer group and the control group, respectively. Conclusion The history of solid tumors didn’t affect DLBCL patients’ treatment response and short-term survival.