Evaluation of school lunch recipes based on digital platform / 中国学校卫生

Objective@#To understand levels of various foods and nutrients in school lunch based on digital platform and to provide reference for food preparation and serving.@*Methods@#A total of 13 018 school lunch recipes in Binhai New Area of 96 schools in Tianjin from November 2020 to April 2021 were collected by using digital management platform for food safety and nutritional health.Food types including cereals and tubers, vegetables, fruits, livestock and poultry meat, fish and shrimp, eggs, milk and dairy products, legumes and their products/nuts and others energy, and nutrients including protein, fat, carbohydrate, calcium, iron, zinc, selenium, vitamin A, vitamin B 1, vitamin B 2, vitamin C and dietary fiber were evaluated.@*Results@#The qualified rate of all kinds of food for students lunch from high to low were 96.8% (116.4 g) of livestock and poultry meat, 92.3% (179.5 g) of cereal and potato, 65.0% (170.6 g) of vegetables, 47.7% (21.4 g) of soybeans and their products/nuts, 33.4% (18.0 g) of eggs, 14.4% (8.5 g) of fish and shrimp, 14.1% (19.6 g) of fruits, 0.3% (35.4 g) of milk and dairy products. There were significant differences in the qualified rate of various food intake among different grades( P <0.05). The qualified rate of students lunch energy was 76.9%(932.6 kcal). The qualified rates of various nutrients from high to low were iron 96.9%(9.7 mg), zinc 96.8%(5.9 mg), protein 96.4%(43.8 g), carbohydrate 87.6%(130.8 g) and selenium 82.9%(23.5 μg), vitamin C 78.5%(48.8 mg), vitamin B 1 75.9%(0.5 mg), fat 74.3%(28.5 g), vitamin A 74.1%(327.1 μ g) vitamin B 2 49.9%(0.5 mg), dietary fiber 19.5%(5.9 g) and calcium 13.4%(246.1 mg). There were significant differences in the qualified rates of energy and nutrients among different grades( P <0.05).@*Conclusion@#The digital platform basically meets school lunch requirments on food types and nutrients, but still with problems regarding insufficient fish and shrimp, fruits, milk and dairy products, vitamin B 2, dietary fiber and calcium. It is suggested to optimize school lunch recipes or increase corresponding nutrients content in other meals.

A comparison of clinicopathological features and prognosis between lymph node dissection extents of pancreatic cancer patients undergoing pancreaticoduodenectomy / 中华普通外科杂志

Objective:To compare the clinical, pathological features and prognosis of patients who underwent pancreaticoduodenectomy with standard or extended lymph node dissection for pancreatic ductal adenocarcinoma.Methods:A retrospective study was performed on 158 pancreatic head cancer patients who underwent radical resection at the First Affiliated Hospital of Nanjing Medical University from Jul 2017 to Feb 2019. The clinicopathological characteristics and prognosis between the standard dissection group and the extended dissection group were compared. The relationship between the number of examined lymph nodes, positive lymph nodes, and the lymph node ratio, together with their relationship with survival were analyzed.Results:Survival analysis showed no statistical difference in survival between the standard resection group and the extended resection group ( P=0.99). There were statistical differences in gender and age composition between the two group, but no significant differences in operation time, blood loss, or postoperative complications were found. Patients with less examined lymph nodes tended to be of stage N0. examined lymph nodes is positively correlated with positive lymph nodes but is not significantly correlated with lymph node ratio. Positive lymph nodes is strongly correlated with lymph node ratio. The location of lymph node metastasis was not survival-related. Conclusions:There is no prognostic difference between standard lymph node dissection and extended lymph node dissection in pancreatic cancinoma patients after Whipple procedure.

Alterations of DNA damage response pathway: Biomarker and therapeutic strategy for cancer immunotherapy

Genomic instability remains an enabling feature of cancer and promotes malignant transformation. Alterations of DNA damage response (DDR) pathways allow genomic instability, generate neoantigens, upregulate the expression of programmed death ligand 1 (PD-L1) and interact with signaling such as cyclic GMP-AMP synthase-stimulator of interferon genes (cGAS-STING) signaling. Here, we review the basic knowledge of DDR pathways, mechanisms of genomic instability induced by DDR alterations, impacts of DDR alterations on immune system, and the potential applications of DDR alterations as biomarkers and therapeutic targets in cancer immunotherapy.

Investigation and analysis of anti-mullerian hormone, inhibin B and sex hormone levels in 101 children with disorders of sex development / 中国医师杂志

Objective:To compare anti-mullerian hormone (AMH) , sex hormone and inhibitor B (Inhibin B, INH-B) levels in children with different karyotypes, ages, and gender disorders of sex developmemt (DSD).Methods:A total of 101 patients with suspected gonadal dysplasia in children who underwent serological examination at the Children′s Hospital of Hunan Province from January 2019 to June 2019 were finally diagnosed by pathological biopsy. With reference to previous studies of the same type, the 101 patients included in this study were divided into 4 levels (<1 year old, 1-2 years old, 2-4 years old, >4 years old), and the social gender was divided into two levels: male and female. At the same time, 89 cases of normal gonadal development children without endocrine abnormality were selected as control. Serum levels of AMH, INH-B, luteinizing hormone (LH), follicle stimulating hormone (FSH), estradiol (E2), prolactin (PRL) and testosterone (T) were measured by chemiluminescence method.Results:Among the 101 cases, 62 were male and 39 were female; aged 23 days to 12 years, with a median age of 3.3 years; karyotype: 52 cases were 46, XX; 21 cases were 46, XY; 12 cases were 45, X; 7 cases were 46X, del (Xq); 5 cases were 46X, i (Xq); 2 cases were 45X, inv9; 2 cases were 45X / 46XX. There were 65 cases of partial gonadal dysplasia, 25 cases of disappearing testicular syndrome, and 11 cases of mixed gonadal dysplasia. One patient had a family history of infertility. Among the causes of children′s consultation, the most common were abnormal appearance of the external genitalia (54 cases, 53.47%), followed by small penile development and / or scrotal emptiness (25 cases, 24.75%). Other reasons included primary amenorrhea, double lateral groin mass, hypertension, clitoral hypertrophy, and labia minora adhesions. The levels of serum AMH, INH-B, and T in the gonadal dysplasia group were significantly higher than those in the normal gonadal development group, while the levels of LH, FSH, E2, and PRL were significantly lower than those in the normal gonadal development group ( P<0.05). The INH-B level of children with gonadal dysplasia in different age groups was statistically significant ( P<0.05), in which the INH-B level was the highest in <1-year-old children with gonadal dysplasia, and the lowest in 2-4-year-old children with gonadal dysplasia; the LH, FSH, E2, PRL, T levels of 46, XX and other karyotypes were statistically significant ( P<0.05); Compared with other age groups, the levels of LH, FSH, E2, and PRL were relatively higher in >4 year-old children with gonadal dysplasia, while the level of T was relatively lower; There were significant differences in E2, PRL and T levels in children with gonadal dysplasia in different age groups of 46, XY karyotype ( P<0.05). Compared with other age groups, E2, PRL and T levels of children with gonadal dysplasia >4 year-old old were relatively higher and T levels were relatively lower. The levels of AMH, LH, FSH, E2 and PRL in boys with glandular dysplasia were lower than those in girls ( P<0.05), while the levels of INH-B and T were higher in boys than those in girls ( P<0.05). Conclusions:The levels of anti-mullerian hormones, inhibin B, and sex hormones in children with gonadal dysplasia are different from the normal population, and may be related to the age, chromosome karyotype, and gender distribution of the child, but there are some confounding factors (such as etiology, treatment Scheme), so more samples are needed to verify it.

Analysis of Clinical Pathological Features and Prognosis in Young Patients with Diffuse Large B Cell Lymphoma / 中国实验血液学杂志

OBJECTIVE@#To explore the clinical pathological features of the patients with diffuse large B cell lymphoma (DLBCL) and their prognostic factors.@*METHODS@#The prognosis of the clinical pathological features and their influence on prognosis of 177 patients diagnosed as DLBCL at the first visit from January 2013 to May 2017 in our hospital were analyzed retrospectively.@*RESULTS@#The univariate analysis showed that overall survival (OS) and progression-free survival (PFS) were associated with later Ann Arbor stage (Ⅲ-Ⅳ) ( P＜0.01, P＜0.05), high performance status (ECOG score 2-4) (P＜0.01, P＜0.05), extranodal involvement ＞1 (P＜0.01, P＜0.05), elevated LDH level (P＜0.01, P＜0.05). B symptom (P＜0.05) and elevated β2-MG level (P＜0.05) also influenced OS. COX multivariate analysis showed that the elevated β2-MG level (P＜0.05) and later stage (Ⅲ-Ⅳ) (P＜0.05) have an independent influence on OS, later stage (Ⅲ-Ⅳ) (P＜0.05) also independently influenced PFS. The patients with high aaIPI score (2-3) and bone marrow involvement before treatment had poor OS (P＜0.01, P＜0.01) and PFS (P＜0.05, P＜0.01).@*CONCLUSION@#Elevated β2-MG level can independently influence OS, and later stage (Ⅲ-Ⅳ) can independently influence both OS and PFS. High aaIPI score (2-3) and bone marrow involvement before treatment have an inferior influence on OS and PFS.

Visualization study of outdoor activities affecting the development of children’s myopia / 中国学校卫生

Objective@#To explore the international development trends and research hotspots of outdoor activities affecting the progression of children’s myopia, and to provide a reference for researching on effective ways to prevent children’s myopia.@*Methods@#Totally 291 relevant documents included in the "Web of Science" core set database were used as research objects, and CiteSpace software was used for visual analysis.@*Results@#At present, the publications in this field were mainly in the United States(81), China(80), Australia(76), and Singapore(33); the top three research institutions were "Natl Univ Singapore"(29), "Australian Natl Univ"(27), "Capital Med Univ"(25); the main authors were "Saw SM", "Morgan IG", "Mitchell P". The field has been developed on the basis of "Ophthalmology", "Public, Environmental and Occupational Health", and has been integrated into 32 disciplines. The research content included "exploration of high risk factors for the progression of children’s myopia" and "outdoor activities", "intervention in children’s progression of myopia" and "longitudinal tracking of children’s vision development". Randomized clinical trials that longitudinally track the correlation between changes in eyeballs and the progression of myopia and the effects of outdoor activities on the biological characteristics of children’s eyeballs have become a hot topic in this field.@*Conclusion@#Research on the effects of outdoor activities on the progression of myopia in children has increased dramatically. The study of increasing outdoor activities to interfere with the progression of myopia in children and the vertical tracking of key factors affecting the biological characteristics of children’s eyeballs have become the current international trends.

Application of Chimeric Antigen Receptor-Modified NK Cells in Multiple Myeloma / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To explore the killing effect of CAR (CD138-CD28-CD3ζ)-NK cells on myeloma cells through construction of CAR(CD138-CD28-CD3)-NK cells.</p><p><b>METHODS</b>The antiCD138scFv-CD28-CD3 zeta plasmid pcDNA3.1 was constructed, which then together with 3 plasmid lentiviral packaging system were transfected into 293T cells, the virus was collected. Furthermore, in order to get the stably transfected cell line, the NK92MI cell line was infected by the virus, then the positive cells were screened by puromycin. The expression of the CARNK cells were verified by RT-PCR and Western blot. At last the ability of secreting cytokine CD107a was detected by flow cytometry, and the statistical analysis was carried out to verify the anti-myeloma effect of CAR-NK cells.</p><p><b>RESULTS</b>Gene fragment of the CAR(antiCD138scFv-CD28-CD3ζ) was constructed successfully by gene engineering technique in vitro, and the gene sequence was verified to be correct by sequencing. By virus packaging technology, the virus expressing the protein of the CAR was obtained. PCR and Western blot verified the expression of CAR fusion protein on the sufurce of NK cells. The cell killing experiment confirmed that the CAR-NK cells possessed the ability to secrete cytokine CD107a superior to control cells and showed the obvious killing effect on multiple myeloma cells.</p><p><b>CONCLUSION</b>The CAR can be constructed in vitro, and express on NK92 cells. The CAR-NK cells can kill the multiple myeloma cells expressing CD138 antigen, thereby plays an antimyeloma effect.</p>

Establishment of A20 Murine B Lymphoma Transplantation Model Labeled with Luciferase / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To establish the animal model of luciferase-transfected A20 murine B cell lymphoma, so as to provide experimental tools to explore the effect of graft versus tumor.</p><p><b>METHODS</b>Luciferase- labeled A20 cells were cloned with puromycin selection. Transfected A20 cells and CBL/6 bone marrow were inoculated into the irradiated BALB/c mice by injection in tailvein to establish the transplantation model. The bioluminescent imaging technique was used to monitor the tumor growth, and then the survival, body weight, tumor formation and pathological characteristics of target organs were observed.</p><p><b>RESULTS</b>A20 cell line stably expressing luciferase gene was successfully obtained. The the bioluminicent imaging found that the tumor luminescence could be observed on day 8 of A20 cell inoculation, and the mean fluorescent intensity was increased along with the tumor growth. Compared with the BMT group, the survival rate and body weight of BMT+A20-Lucmice were decreased significantly. General anatomy showed the tumor mainly formed in the liver and spleen.</p><p><b>CONCLUSION</b>A mouse transplantation model with luciferase- transfected A20 cells has been successfully established, thus laying a foundation for investigation of graft-versus-tumor.</p>

Effect of G-CSF in vitro Stimulation on Distribution of Peripheral Lymphocyte Subsets in the Healthy Persons / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To investigate the effect of granulocyte-colony stimulating factor (G-CSF) in vitro stimulation on the distribution of lymphocyte subset in healthy human.</p><p><b>METHODS</b>Peripheral blood mononuclear cells (PBMNCs) were collected from 8 healthy volunteers by density gradient centrifugation on Ficoll-Paque. In vitro 200 ng/ml G-CSF or 200 ng/ml G-CSF plus 10 µg/ml ConA directly act on PBMNCs, then the colleted cells were cultivated for 3 days. Lymphocyte subsets were stained with the corresponding fluoresce labeled antibodies and detected by flow cytometry.</p><p><b>RESULTS</b>The levels of T cells in G-CSF group and G-CSF+ConA group were both higher than that in the control group (P<0.001, P<0.05). However, there were not significantly different in B cells and NK cells levels among the 3 groups. Furthermore, analysis of the effect of G-CSF on T cell subsets indicated that the levels of CD4T cells and CD8T cells in G-CSF group were both significantly higher than those in control group (P<0.01, P<0.05), Treg cells was not different between G-CSF and control group. Compared with the control group, the level of CD4T cells, CD8T cells and Treg cells in G-CSF+ConA group significantly increased (P<0.05, P<0.01, P<0.01). Analysis of G-CSF receptor (G-CSFR) expression showed that G-CSFR expression on T cells in G-CSF+ConA group dramatically increased, as compared with control group (P<0.01).</p><p><b>CONCLUSION</b>The levels of CD4T cells and CD8T cells in healthy human peripheral blood can be increased by G-CSF stimulation. ConA can enhance the level of T cells and induce G-CSFR expression on T cells.</p>

Diagnostic significance of lymph node core needle biopsy for lymphoproliferative disease: a clinicopathologic study of 1 013 cases / 中华病理学杂志

Objective@#To study the clinicopathologic features of lymphoproliferative disease by lymph node core needle biopsy(CNB)and to evaluate the diagnostic significance of CNB for lymphoproliferative disease.@*Methods@#The annual distribution, entity constitute, clinical finding, gross feature, morphologic change, affiliate study and repeat biopsy diagnosis of 1 013 cases of lymph node CNB diagnosed at West China Hospital of Sichuan University from January 2009 to December 2015 were investigated.@*Results@#(1) Proportion of lymph node CNB in total amount of biopsy specimens increased from 0.2% in 2009 to 0.8% in 2015.(2) The study cohort included 471 lymphomas, 12 atypical lymphoid hyperplasia (ALH), 136 suspected lymphomas, 372 benign lesions, and 22 cases of descriptive diagnoses. The most common types were diffuse large B cell lymphoma and T-lymphoblastic lymphoma. (3) Majority of patients were adolescents and children younger than 20 years or the elderly older than 60 years. 53.1% CNB tumor specimen consisted of ≥4 tissue cores and 40.5% were >2 cm in length. (4) 104 CNB cases with previous history of excision biopsy was included 45 carcinomas(no metastatic carcinoma was found), 32 lymphomas for treatment observation.1/14 suspicious lymphomas, 1/1 ALH and 3/22 cases benign lesions were diagnosed as lymphoma by repeat biopsy respectively. (5) 217 CNB cases were diagnosed as lymphoma by subsequent CNB (70), or subsequent excision biopsy (147) including 78.5%(73/93) suspected lymphomas, 5/7 ALH and 32.3%(20/62)benign lesions.@*Conclusions@#Lymph node CNB has certain clinical indications, although limited for the diagnosis of lymphoproliferative disorders. Suspected lymphomas and ALH diagnosed by CNB should be followed by repeat tissue biopsy. For the benign lesions by CNB it does not rule out additional biopsy to further investigate the lesion.

Diagnostic and therapeutic values of interphase fluorescence in situ hybridization in B-cell lymphomas: a clinicopathologic analysis of 604 cases / 中华病理学杂志

Objective@#To investigate the feasibility and value of interphase fluorescence in situ hybridization (FISH) in the pathological diagnosis, differential diagnosis and therapeutic assessment of B-cell lymphomas.@*Methods@#The cohort included 604 cases of B-cell lymphoma which were collected at West China Hospital from May 2010 to December 2016.And all were subjected to interphase FISH using 11 break apart or fusion probes (MYC, bcl-2, bcl-6, IRF4, MYC/IgH, bcl-2/IgH, CCND1/IgH, IgH, API2/MALT1, p53/ATM, and D13S319/CEP12).@*Results@#The median age of the 604 B-cell lymphoma patients was 47.7 (aged 2-90) years including 372 men and 232 women. All the cases was divided into 463 large B cell lymphomas(LBL) and 141 small B cell lymphomas, and the total interphase FISH positive rate was 59.8% (361/604). Among the 463 LBL, 12.5% (58/463), 9.5% (44/463) and 2.2% (10/463) of cases showed MYC, bcl-6 and bcl-2 gene rearrangements respectively; and 363 diffuse large B cell lymphoma (DLBCLs) were reclassified as germinal center B-cell (GCB) subtype (38.6%, 140/363) and non-GCB subtype (61.4%, 223/363) by Hans algorithm. The rearrangement rates in GCB and non-GCB DLBCL were 45.7%(64/140)and 21.5%(48/223; P=0.001), respectively. Compared to the non-GCB DLBCL, GCB DLBCL showed higher MYC and bcl-2 gene rearrangements (P=0.001). Eleven (2.4%, 11/463) cases had MYC and bcl-6 or bcl-2 gene rearrangement (double-hit lymphoma); one (0.2%, 1/463) case had MYC, bcl-6 and bcl-2 gene rearrangements (triple-hit lymphoma); two (0.4%, 2/463) cases had bcl-2 and bcl-6 gene rearrangements. MYC translocation and MYC/IgH fusion were detected in 94.2%(81/86) and 83.7%(72/86) cases of Burkitt lymphomas. IRF4 rearrangement was detected in two cases of IRF4+ LBCL. Genetic abnormalities were detected in 9/19, 100%(29/29), 30.8%(12/39) and 68.5%(37/54) cases of follicular lymphoma, mantle cell lymphoma, MALT lymphoma and chronic lymphocytic leukemia, respectively.@*Conclusions@#Interphase FISH can rapidly and accurately detect the genetic changes in B-cell lymphomas. Different genetic changes are specifically valuable to the diagnosis, differential diagnosis, prognosis evaluation and treatment guidance of various B-cell lymphomas.

Ascending input from dorsal nuclei of lateral lemniscus mediates the plasticity of inferior colliculus neurons in mice / 生理学报

The auditory system has the ability to adjust its structure and function as the environment changes, which is called auditory plasticity. In the auditory system, inferior colliculus (IC) is an important relay station, which accepts the ascending inputs from dorsal nuclei of lateral lemniscus (DNLL). The present study was aimed to investigate the role of the DNLL in the formation of the plasticity of IC neurons. Here, we used extracellular single unit recording and electrical stimulation to investigate the plasticity of IC neurons in Kunming mice. The results showed that after the cessation of 30-minute electrical stimulation on contralateral DNLL, 95% of the inhibited IC neurons and 86% of the facilitated IC neurons showed plastic changes. Moreover, 1 h after the contralateral DNLL stimulation was stopped, the plastic changes in 74% of the inhibited IC neurons vanished, but still were maintained in 26% of the inhibited IC neurons. These results suggest that the contralateral DNLL ascending input can induce plastic changes of IC neurons, and this kind of effect can be maintained for a certain period of time, which is beneficial to enhance the sound intensity sensitivity of IC neurons.

Research progress in dynamic monitoring of lung cancer immunotherapy / 中华胸心血管外科杂志

In recent years,the application of immune checkpoint blockades has brought dramatical revolution to the treatment of malignant tumors,which not only significantly increase the clinical benefits of partial advanced lung cancer,but also gradually change the landscape of available treatment options for patients with local advanced and early-staged lung cancer.But problems of immunotherapy about efficacy and safety follows.It is urgent to find dynamic biomarkers to identify the patients who are most likely to benefit from immunotherapy and to monitor tumor-specific immune responses.Several dynamic biomarkers have been identified,we will review some of lung cancer-related biomarkers,such as PD-L1 、TMB 、ctDNA 、TILs and peripheral blood biomarkers.

Effect of rhG-CSF Mobilization on S1P5 Expression in T Lymphocyte Subsets of Allo-HSCT Donors / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To explore the effect of recombinant human granulocyte colony-stimulating factor (rhG-CSF) mobilization on S1P5 expression in T lymphocyte subsets of allo-HSCT donors.</p><p><b>METHODS</b>The peripheral blood was collected from 10 allo-hematopoietic stem cell transplantation (allo-HSCT) donors before and after mobilization with rhG-CSF for 4 days. The flow cytometry was used to detect S1P5 expression in T lymphocyte subsets.</p><p><b>RESULTS</b>There was no S1P5 expression on the surface of T-lymphocytes both before and after rhG-CSF mobilization. After fixation with permeabilization agent, S1P5 expression could be detected in lymphocytes after rhG-CSF mobilization, which indicates S1P5 may be located in cells. Compared with level before rhG-CSF mobilization, S1P5 expression was significantly increased in T lymphocyte subsets after rhG-CSF mobilization, CD3(+)T cells (57.92±2.32)% vs (7.94±1.47)%(P<0.05）, CD4(+)T cells (72.58±1.73)% vs （5.48±0.82）%(P<0.05）, CD8(+)T cells（51.79±3.57）% vs （6.46±1.01）%（P<0.05）,CD3-/CD56(+)NK cells（40.00±1.47）% vs（4.97±0.74）%（P<0.05）. The up-regulated level of S1P5 expression in CD4(+)T cells was most high(P<0.05).</p><p><b>CONCLUSION</b>S1P5 expression significantly increases in T lymphocyte subsets after rhG-CSF mobilization, and the up-regulated level of S1P5 expression in CD4(+)T cells is the most high.</p>

Expression Profile of lncRNA NONHSAT040475 in Peripheral Blood Leukocytes of Healthy Persons / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To investigate the expression profile of lncRNA NONHSAT040475 in peripheral blood leukocytes of healthy persons.</p><p><b>METHODS</b>The peripheral blood mononuclear cells were collected from 10 healthy volunteers, the CD3(+) T cells,CD19(+) B cells,CD56(+) NK cells and granulocytes were purified and sorted by flow cytometry. Then, the expression of lncRNA NONHSAT040475 in peripheral blood leukocyte subsets was detected by real-time quantitative PCR.</p><p><b>RESULTS</b>the expression levels of lncRNA NONHSAT040475 were various in lymphocyte subsets, its expression in B lymphocytes was significantly higher, as compared with T lymphocytes, while the expressions of lncRNA NONHSAT040475 in NK cells and granulocytes were relative low（P<0.01）.</p><p><b>CONCLUSION</b>lncRNA NONHSAT040475 is widely expressed in human peripheral blood leukocytes, and mainly expressed in B lymphocytes, therefore, laying the foundation for further study of B lymphocyte-related diseases. This study has brought a new opportunity for diagnosing and illustrating the molecular mechanism of hematologic disorder or autoimmune disease.</p>

Diffuse large B-cell lymphoma with aberrant expression of CD56: a clinicopathologic and immunohistochemical study / 中华病理学杂志

<p><b>OBJECTIVE</b>To study the clinicopathologic features and significance of aberrant CD56 expression in diffuse large B-cell lymphoma (DLBCL).</p><p><b>METHODS</b>The clinical and pathologic profiles of 10 cases of DLBCL with aberrant expression of CD56 were investigated. Immunohistochemical staining, in-situ hybridization for Epstein-Barr virus encoded RNA and gene rearrangement for IgH and Igκ were carried out.</p><p><b>RESULTS</b>There were 6 male and 4 female patients. The medium age of patients was 46 years. All of them presented with extranodal lymphoma involvement, with gastrointestinal tract being the commonest site (5/10). Histologic examination showed that most of the atypical lymphoid cells were centroblast-like and demonstrated a diffuse growth pattern. Apoptosis and necrosis were identified in some cases. Immunohistochemical study showed that the tumor cells were positive for CD20 or CD79α and aberrantly expressed CD56. Five cases had the GCB phenotype while the remaining cases had the non-GCB phenotype, according to Hans classification. Bcl-6 was positive in most cases (9/10). All cases showed a high proliferation index by Ki-67. The tumor cells were negative for CD3ε, CD138 and granzyme B. In-situ hybridization for Epstein-Barr virus encoded RNA was performed in 7 cases and none of them showed positive signals. IgH gene rearranged bands were detected in 4 cases (4/6) and Igκ was detected in 3 cases (3/6). Follow-up data were available in 8 patients. Two patients died of disease progression within 5 to 13 months after diagnosis and the other 6 patients were alive 8 to 60 months after therapy.</p><p><b>CONCLUSIONS</b>DLBCL with aberrant expression of CD56 is rare. Most of them present with extranodal involvement, show high frequency of bcl-6 expression and high proliferation index. The patients often have good response to chemotherapy.</p>

Role of Mesenchymal Stem Cells in Preventing GVHD: A Meta-Analysis / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To evaluate the efficacy of mesenchymal stem cells (MSC) in the prevention of graft versus host disease (GVHD) after hematopoietic stem cell transplantation (HSCT).</p><p><b>METHODS</b>Randomized controlled trials (RCT) were identified from PubMed (1950.1-2014.3), EMbase (1970.1-2014.3), Cochrane Central Register of Controlled Trials (CENTRAL, issue 4, 2014) of the Cochrane Library, China Biological Medicine (CBM, 1978.1-2014.3). References of retrieved articles were also identified. The quality of each RCT was evaluated by the Cochrane collaboration's tool for assessing the risk of bias. Data analysis was performed with Review Manager 5.1 to evaluate the efficacy of MSC in the prevention of GVHD after HSCT.</p><p><b>RESULTS</b>A total of 3 English articles involving 117 patients were included. Meta-analysis indicated that MSC did not reduce the incidence of acute GVHD and chronic GVHD (RR:0.44, 95% CI: 0.08 to 2.51, P = 0.35; RR:0.85, 95% CI: 0.54 to 1.33, P = 0.47). However, MSC did not increase occurrence of relapse and cytomegalovirus infection (RR:1.52, 95% CI:0.63 to 3.68, P = 0.35;RR:1.05, 95% CI:0.72 to 1.53, P = 0.78). Finally, MSC did not improve overall survival rate of patients received HSCT (RR:1.06, 95% CI:0.79 to 1.43, P = 0.71).</p><p><b>CONCLUSION</b>MSC may have a preventive effect on GVHD in patients undergoing HSCT. However, the evidence is weak due to the small sample sizes. Thus, a reliable conclusion about the preventive effect of MSC on GVHD at the moment has not been made, further larger, high quality, randomized and controlled trials are warranted.</p>

Effects of rhG-CSF mobilization on the polarization and migration of donor's CD4(+)T lymphocytes / 中国实验血液学杂志

The polarization and migration of T lymphocytes involves the adhesive interaction of lymphocyte function-associated antigen 1(LFA-1) with its ligand intercellular adhesion molecule 1 (ICAM-1). This study was aimed to investigate the effects of recombinant human granulocyte colony-stimulating factor (rhG-CSF) mobilization on the polarization and migration of donor's CD4(+) T cells in peripheral blood. The peripheral blood mononuclear cells were collected from 10 healthy volunteers and 10 donors on the fifth day of mobilization with rhG-CSF. And the CD4(+)T cells were purified by miniMACS. The polarization and migration of CD4(+) T cells activated by stroma cell-derived factor -1α (SDF-1α) and ICAM-1 were detected by using inverted and confocal microscopes respectively. The results showed that the percentage of polarized CD4(+)T cells from donors(32.42 ± 4.91)% was lower than that from healthy controls(56.55 ± 5.35)% (P < 0.01), the migration velocity of CD4(+)T cells from donors (7.06 ± 1.44 µm/min) was also lower than that of healthy controls(9.05 ± 1.91 µm/min)(P < 0.01). It is concluded that the polarization and migration of CD4(+)T lymphocytes is impaired after rhG-CSF mobilization.

Effects of rhG-CSF Stimulation in vitro on the Adhesion and Polarization of Human CD4⁺T Lymphocytes / 中国实验血液学杂志

The adhesion and polarization of T lymphocytes involved in the adhesive interaction of lymphocyte function-associated antigen 1 (LFA-1) with its ligand intercellular adhesion molecule 1 (ICAM-1). This study was aimed to investigate the effects of recombinant human granulocyte colony-stimulating factor (rhG-CSF) stimulation in vitro on the adhesion and polarization of CD4⁺ T cells of healthy human in peripheral blood. The peripheral blood mononuclear cells were collected from 12 healthy volunteers. The CD4⁺ T cells were sorted by miniMACS. The sorted CD4⁺ T cells were incubated with rhG-CSF for 24 h, then the adhesion and polarization of CD4⁺ T cells activated by stroma cell-derived factor -1α (SDF-1α) and ICAM-1 were detected by ELISA and inverted microscope. The results showed that the percentage of adhesion CD4⁺T cells in the experimental group (rhG-CSF acting on the healthy adult volunteers) (61.9 ± 5.9)% was lower than that in the control group (healthy adult volunteers without rhG-CSF stimulation) (68.3 ± 7.3)% (P < 0.05). The percentage of polarized CD4⁺T cells in the experimental group (24.3 ± 4.3)% was also lower than that in control group (47.1 ± 5.1)% (P < 0.05). It is concluded that the adhesion and polarization of CD4⁺T lymphocytes can be inhibited after rhG-CSF stimulation.

Identification of Bupleurum chinense and B. longiradiatum based on ITS2 barcode / 中国中药杂志

In this study, ITS2 barcode was used to identify Bupleurum chinense and B. longiradiatum. The ITS2 regions of 48 samples were amplified and sequenced. The sequences obtained above were aligned and the K2P distances were calculated. We used three methods, BLAST1, nearest distance and phylogenetic tree (NJ-tree), to test the identification ability. The results showed that the maximum intraspecific genetic distance of B. chinense was 0.013, and the minimum interspecific genetic distance between B. chinense and B. longiradiatum was 0.049. The NJ-tree can easily identify B. chinense and B. longiradiatum. Therefore, the ITS2 barcode is suitable to identify B. chinense and B. longiradiatum.