Purpose To investigate 1H-MRS in differentiating intracranial lymphoma from tumor-like demyelinating lesions. Materials and Methods Thirty-three cases of intracranial lymphoma confirmed by pathology and 18 cases of tumor-like demyelinating lesions confirmed by pathology or clinic were recruited in this study. Imaging data including single-voxel (TE=144 ms) 1H-MRS was retrospective analyzed. The Cho/Cr and Cho/NAA area ratios were calculated. The lipid and lactate peak was visually categorized into 5 grades based on the ratio of Lip-Lac peak to the height of the Cr peak. 1H-MRS findings of the intracranial lymphoma and the tumor-like demyelinating lesions were compared. The differentiation of the two diseases diagnosed by 1H-MRS and conventional MR were evaluated by use of receiver operating characteristic curves. Results There were significant difference of Cho/Cr, Cho/NAA ratio and Lip-Lac peak level between the intracranial lymphoma and tumor-like demyelinating lesions (P<0.001). It was more likely to be intracranial lymphoma when Cho/Cr ratio was>2.56, Cho/NAA ratio was>1.71, and Lip-Lac peak grade was>3. Cho/Cr, Cho/NAA ratio and Lip-Lac peak grade were found higher in atypical intracranial lymphomas when compared with those of tumor-like demyelinating lesions. The area under the receiver operating characteristic curve of conventional MR was increased from 0.827 to 0.870 when Cho/NAA ratio was added for analysis in the 28 uncertain cases. Conclusion 1H-MRS has great clinical significance for differentiating intracranial lymphoma from tumor-like demyelinating lesions. The values of Cho/Cr ratio>2.56, Cho/NAA ratio>1.71 and Lip-Lac grade >3 suggest intracranial lymphoma rather than TDLs. When the conventional MR imaging features can not do the differentiation, Cho/NAA ratio is a useful complement.

Objective To observe the effect of somatostatin combined with transcatheter arterial infusion chemotherapy in the treatment of malignant intestinal obstruction.Methods 60 patients with malignant intestinal obstruction were enrolled in our hospital from January 2013 to June 2015.The rats were randomly divided into 4 groups: the conventional group(n=15),the growth inhibition group(n=15),the low dose intra-arterial infusion chemotherapy group(n=15)and somatostatin plus low-dose intra-arterial infusion chemotherapy group(n=15).The clinical symptom remission time,duration of clinical symptom remission and survival time were compared between the four groups.Results The study showed that somatostatin group of gastrointestinal decompression and symptom remission time were significantly better than the conventional group.Especially the symptom remission time is significantly faster than the conventional group and chemotherapy group(P< 0.05); the duration of chemotherapy group and somatostatin+artery perfusion chemotherapy group in survival time and relieve symptoms,were significantly better than the conventional group and somatostatin group(P< 0.05).Conclusion Somatostatin is beneficial to reduce the amount of gastrointestinal decompression in the treatment of malignant intestinal obstruction.Celiac artery infusion chemotherapy can help to improve the maintenance time and prolong the survival time of patients with malignant obstruction.The combination of somatostatin and celiac artery infusion chemotherapy is beneficial to relieve the symptoms and prolong the time interval,and improve the survival time of patients.

Haptoglobin (Hp),also known as hemopexin,is an acute phase protein expressed predominantly in the liver.Hp binds to free Hemoglobin (Hb),and this Ht-Hb complex is degraded via CD163 (macrophage scavenger receptor)-mediated endocytosis,which subsequently blocks Hb-induced oxidative damage.There are three major human Hp genotypes:HP1-1,HP2-1,and HP2-2.Studies have shown that different HP genotype has distinct impact on diabetic vascular complications.In this review,we focus on the association between HP polymorphisms and diabetic vascular complications.

The construction of featured specialties is the current development strategy of community health service institutions to improve the service scope and to meet the health needs of residents. The rehabilitation medicine has undergone 12 years of development and become a relatively mature featured specialty in Fenglin Community Health Service Center. Based on the Fenglin′s experience, this article discusses the development status and restriction bottlenecks of general practice, and the development status and trend of rehabilitation medicine in the community; and also explores the integrated development model of community-featured specialty with general practice.

Objective To evaluate the outcome of 1iver transplantation for acute-on-chronic liver failure (ACLF) patients .Methods We included 453 consecutive patients with previously cirrhosis who underwent liver transplantation between January 2013 and December 2017 .Patients were categorized as no ACLF (n=294) and ACLF(n=159) according to EASL-CLIF consortium criteria .Furthermore ,we used ACLF grades to categorize the ACLF patients .Their clinical data were reviewed and their 90-days survival outcomes were compared .Results Compared with the no ACLF group ,the length of stay in the ICU was significantly prolonged for all patients with ACLF ,and the 90-days survival rate after transplantation was significantly reduced in ACLF group .The length of stay in the ICU was shorter in Grade 1 and Grade 2 group when compared to Grade 3 group .The 90-days survival rate of no ACLF ,Grade 1 ,Grade 2 and Grade 3 group were 93 .20％ ,92 .59％ ,93 .33％ and 73 .68％ ,respectively .There were no statistically significant differences in 90-days survival rate among the no ACLF ,Grade 1 and Grade 2 group .However , the 90-days survive rate of Grade 3 group was lower than that of other groups .Conclusions Liver transplantation has been shown to be safe and effective with good outcome in patients with ACLF and should be offered in early course of ACLF before onset of multi-organ failure .

Rehabilitation medicine is one of the most important specialties in community health institutions. This article introduces the 12 year′s development of rehabilitation medicine in Fenglin Community Health Service Center, focusing on the talent allocation, service capabilities, resource expansion, basic facilities, personnel recruiting, department operating, service scope, and its achievements and influence, to provide reference for planning and construction of featured specialty in community health service centers.

Community health institutions have entered a new development stage of featured specialty construction. After 12 years of development, rehabilitation medicine now is the featured specialty of Fenglin Community Health Service Center. This article presents the train of thought and key points of specialty construction in primary care institutions based on the Fenglin′s experience. The positioning of featured specialty should be based on the community. The construction process should include 7 elements, namely, the standard operation procedure(SOP)of service system construction, the detailed publicity and implementation of the collaboration of specialists, prevention and control knowledge promotion for general practitioners, prevention and control knowledge education for community residents, service list, clinical efficacy evaluation, and clinical database. In the later iterations, the head of the department should always focus on the service system construction SOP and clinical database construction, and the rest parts can be assigned to the relevant team members.

BACKGROUND: Zinc, an inorganic antibacterial material, has a suitable degradation rate and good antibacterial property. Adding alloying elements can improve the mechanical properties and biocompatibility of the material, which is the development direction of novel medical biodegradable metal materials. There is still lack a comparable research on the antibacterial properties among zinc-based materials. OBJECTIVE: To investigate the antibacterial properties of pure zine and zinc-based alloys in vivo. METHODS: Eighty Sprague-Dawley rats, SPF grade, were randomized into two groups (n=40/group) , and all rats were injected with Staphylococcus aureus or Escherichia coli solution to prepare infection models. Different materials (Zn, ZnAl, ZnSr, Zn3 Mg, Zn3 Ag, Zn3 Ca and Zn4 Cu; five rats for each material) were implanted into the medullary cavity of femur. The control group without any material was set. At 1, 4, 7 and 14 days after implantation, the changes of body temperature, white blood cell count, serum tumor necrosis factor α and serum zinc content in rats were detected. The secretions and tissues of the surgical site were collected to identify the bacterial species. RESULTS AND CONCLUSION: (1) The body temperature in all the rats was increased to different extents after bacterial infection, but the temperature of the rats implanted with zinc and zinc alloys was always lower than that in the control group at 7 and 14 days (P < 0.05) . The temperature in the Zn3 Ag group was significantly lower than that in the other groups at 7 and 14 days (P < 0.05) . (2) The white blood cell count and tumor necrosis factor α level in the zinc and zinc alloys groups were significantly lower than those in the control group at 7 and 14 days after implantation (P < 0.05) . The white blood cell count and tumor necrosis factor α level in the Zn3 Ag group were significantly lower than those in the other groups (P < 0.05) . (3) The serum zinc content in all groups has no significant difference (P> 0.05) . (4) The bacterial culture results showed S.aureus (+) in the Staphylococcus aureus infection group and E.coli (+) in the Escherichia coli infection group. (5) To conclude, degradable zinc-based alloys exert marked antibacterial effects, and Zn3 Ag alloys have the best antibacterial activity.

Objective: To investigate the association between D-dimer levels and clinical events in patients with mechanical heart valve replacement under oral anticoagulation therapy. Methods: This prospective study included 640 consecutive patients underwent mechanical heart valve replacement in Wuhan Asia Heart Hospital between January 2013 and June 2014.Patients were assigned to abnormal D-dimer group (D-dimer level>cut off value, n=88) and normal D-dimer group (D-dimer level≤cut off value, n=552) according to D-dimer levels measured at 3 months after the initiation of oral anticoagulation therapy.All patients were followed up for 24 months or until the observation of the end points, which included thrombotic events, bleeding events and all-cause deaths.The anticoagulation therapy was monitored once per 1-2 months by the international normalized ratio (INR), and the target value was 1.8-3.0. Results: During a follow-up period of 24 months, rates of total clinical events (19.30%(17/88) vs. 5.8%(32/552), P<0.01), thrombotic events (11.4%(10/88) vs. 2.3%(13/552), P<0.01), and all-cause deaths (8.0%(7/88) vs. 2.0%(11/552), P<0.01) were all significantly higher in abnormal D-dimer group than in normal D-dimer group.There were no significant difference in bleeding events between the two groups (2.3%(2/88) vs. 3.1%(17/552), P=0.77). Multivariate Cox regression analysis showed that high D-dimer level was an independent risk factor of total clinical events (HR=3.86, 95%CI 1.92-7.76, P<0.01), thrombotic events(HR=5.29, 95%CI 2.12-13.10, P<0.01), and all-cause deaths(HR=5.32, 95%CI 1.71-16.60, P<0.01), but which was not correlated with bleeding events(HR=1.36, 95%CI 0.27-6.84, P=0.71). Conclusion Elevated D-dimer levels are linked with clinical events in patients with mechanical heart valve replacement under oral anticoagulation therapy.

Objective To explore the risk factors of complicating urogenic sepsis after percutaneous nephrolithotripsy(PCNL)and construct a nomogram prediction model.Methods The data of 291 patients with stage 1 PCNL in 940 Hospital of Joint Logistics Support Force from October 2016 to October 2021 were retrospectively analyzed.The patients were divided into the sepsis group and non-sepsis group according to whether complicating urogenic sepsis after operation.The general data,stone-related data,operation-related data and laboratory detection related data were included.The independent risk factors were screened by the univariate and multivariate logistic regression analysis,and the nomogram prediction model was constructed.Results The results of univariate and multivariate logistic regression analysis showed that age≥60 years old(OR=6.438,95％CI:1.548-26.769),urinary leukocyte 3+(OR=5.651,95％CI:1.614-31.766),urinary nitrite positive(OR=7.117,95％CI:1.190-42.561),operation time≥90 min(OR=4.626,95％CI:1.137-18.817)and perfusion volume 30 L(OR=3.312,95％CI:1.090-10.061)were the independent risk factors of postoperative complicating urogenic sepsis.C-index of the constructed nomogram prediction model in the modeling samples was 0.937,the calibrated C-index was 0.914,and the model predictive efficien-cy was good.Conclusion Age ≥60 years old,urinary leukocyte 3+,urinary nitrite positive,operation time 90 min and perfusion volume ≥30 L are the independent risk factors for complicating urogenic sepsis after PCNL;the constructed nomogram prediction model has a good predictive efficiency for the occurrence of post-operative urogenic sepsis.