MSRSGC: A prospective study of heterogenous group atypia of undetermined significance

Context: Many standard books, literatures, and internet described the characteristic lineament of each salivary gland lesion. Nevertheless, there are dozens of disarray, confusion, and unmanageable morphological features regarding proper reporting. To fight with these issues, Milan System for Reporting Salivary Gland Cytopathology (MSRSGC) was introduced in 2018, but still the third category, Atypia of undetermined significance (AUS), poses difficulties for the pathologists and clinicians for a definite interpretation. Aim: The aim is to analyze the risk of neoplasia (RON) and risk of malignancy (ROM) of Milan's category III (AUS) by subdividing into six groups based on cytolomorphology. Settings and Design: The duration of study was from March 2018 to may 2021 with the focus on ROM and RON of all Milan's categories with especial attention on AUS. Methods and Material: Result of total 329 Fine Needle Aspiration Cytology of salivary glands was categorized according to MSRSGC. On the basis of cytomorphology, further subtyping of AUS and its cytohistopathology correlation was done. The ROM and RON of each subtype was analyzed. Statistical Analysis: All data were calculated by existing formulas. Results: Out of 329 aspirates, 24 (07.29%) cases belong to AUS with availability of histology in 13 (54.17%) cases. RON and ROM was 84.62% and 53.85%, respectively. Cases of lymphocytes with nuclear atypia (L-NA) was the most prevalent (29.17%). The RON were 60.00%, 68.57,% 84.62%, 94.87%, 87.50%, 100%, 100% and the ROM were 20.00%, 11.42%, 53.85%, 05.13%, 43.75%, 83.33% and 100% in each Milan's categories I, II, III, IVa, IVb, V, and VI, respectively. ROM was the highest in cystic fluid with nuclear atypia (C-NA) (100.0%), followed by basaloid cells (75%), L-NA (66.675), and SC (50%), but ROM was zero in NA and oncocytic cells. Conclusions: Subgrouping of AUS helps to dissipate the muddiness and provide more exact and reproducible diagnostic and prognostic tool.

Molecular characterization of BK virus detected in renal transplant patients in Sri Lanka: a preliminary study

Background & objectives: BK virus (BKV) is a polyomavirus and cause of a common infection after renal transplantation which could be preceded to BKV-associated nephropathy. It has four main subtypes (I–IV). BKV subtypes II and III are rare, whereas subtype I shows a ubiquitous distribution. The objective of the present study was to investigate the prevailing BKV subtypes and subgroups in renal transplant patients in Sri Lanka. Methods: The presence of BKV in urine was tested through virus load quantification by real-time PCR from 227 renal transplant patients who were suspected to have BKV infection. Of these patients only 41 were found to be BKV infected (>103copies/ml) and those were subjected to conventional PCR amplification of VP1 gene followed by BKV genotyping via phylogenetic analysis based on DNA sequencing data. Results: Persistent BK viral loads varied from 1×103 to 3×108 copies/ml. Of the 41 patient samples, 25 gave positive results for PCR amplification of subtyping region of VP1 gene of BKV. BKV genotyping resulted in detecting subtype I in 18 (72%) and subtype II in seven (28%) patients. BKV subgroups of Ia, Ib-1 and Ib-11, and Ic were identified with frequencies of 6/18 (33.3%), 6/18 (33.3%), 5/18 (27.8%), and 1/18 (5.6%), respectively. Interpretation & conclusions: Findings from this preliminary study showed a high occurrence of subtype I, while the presence of subtype II, which is rare and less prevalent, was a novel finding for this Asian region. This emphasizes the need for further molecular and serological studies to determine the prevalence of different BKV subtypes in Sri Lanka

Multi-sequence clinical-radiomic model predicts molecular subgroups of pediatric medulloblastoma / 中华实用儿科临床杂志

Objective:To explore the value of the model based on multi-sequence magnetic resonance imaging (MRI) radiomics and clinical features in predicting molecular subtypes of pediatric medulloblastoma (MB).Methods:MRI imaging data and clinical data of 100 children with primary MB admitted in the First Affiliated Hospital of Zhengzhou University from January 2011 to January 2020 were analyzed retrospectively.Fifty children with primary MB were allocated to training cohort, and those of the other 50 were allocated to testing cohort by using simple random sampling method.In the training cohort, there were 5 cases of WNT-activated MB (Wingless, WNT), 5 cases of SHH-activated MB (Sonic hedgehog, SHH), 28 cases of non-WNT/non-SHH medulloblastoma Group3 (Group3), 12 cases of non-WNT/non-SHH medulloblastoma Group4 (Group4). The testing cohort included 11 cases of WNT, 3 cases of SHH, 24 cases of Group3 and 12 cases of Group4.The robust and non-redundant features were selected from 5 929 three-dimensional radiomic features extracted from the manually delineated tumor area, and Boruta algorithm was used to further select the optimal features.Based on the selected features, a random forest prediction model was constructed using the training cohort (50 cases), which was further used to evaluate the testing cohort (50 cases). Combined with radiomic features and clinical features, a joint random forest prediction, clinical-radiomic model was constructed.Results:A radiomic model containing 13 optimal radiomics features was used to predict molecular subtypes of MB.The area under curve(AUC) of receiver operating characteristic (ROC) curve for WNT, SHH, Group3 and Group4 MB cases in the testing cohort was 0.923 1, 0.673 7, 0.519 2 and 0.705 0, respectively.Incorporating clinical features into the radiomic model improved AUC for WNT and SHH at 0.944 1 and 0.819 1, respectively.Conclusions:The multi-sequence clinical radiomic model has a high predictive value for pediatric MB with the molecular subtypes of WNT and SHH, which provides decision-making supports for individualized diagnosis and treatment of pediatric MB.

Diseño y optimización de un tubo policromático de citometría de flujo para inmunofenotipo linfocitario periférico / Design and optimization of a polychromatic tube of flow cytometry for peripheral lymphocyte immunophenotype

Introducción: La citometría de flujo permite la cuantificación de las subpoblaciones de linfocitos con una elevada sensibilidad, especificidad y objetividad. Estas ventajas solo se logran con un proceso laborioso de diseño individualizado y controlado para cada experimento. Objetivo: Diseñar un protocolo de un solo tubo policromático de citometría flujo para inmunofenotipo linfocitario periférico. Métodos: Se realizó un estudio experimental in vitro con muestras de sangre periférica obtenidas de tres voluntarios sanos, en el Centro Nacional de Genética Médica, en marzo de 2019. El tubo se compuso de seis marcadores de linaje para identificar linfocitos B, T, natural killer y natural killer T. Se desarrolló un protocolo de lisis de hematíes sin lavado. Se emplearon anticuerpos monoclonales conjugados con fluorocromos. El punto óptimo de concentración correspondió al mayor índice de tinción y conservación de los porcentajes de positividad de cada población. Se realizó la construcción progresiva del tubo y se propuso una estrategia lógica de secuencia de ventanas para el análisis de datos. Resultados: Los marcadores seleccionados permitieron realizar correctamente el inmunofenotipo linfocitario periférico. En los cinco puntos de titulación se observaron buenas discriminaciones entre las señales positivas y negativas, excepto para el anti-CD56 que presentó una tendencia decreciente del índice de tinción. El volumen total de conjugados requeridos para la determinación de los 6 antígenos fue de 3,75 μL por tubo. Conclusiones: Se obtuvo un tubo policromático que permite el inmunofenotipo periférico de forma rápida y precisa por seis antígenos linfocitarios simultáneamente, con el empleo de pequeños volúmenes de conjugado y sangre(AU)

Introduction: Flow cytometry allows quantification of lymphocyte subpopulations with high sensitivity, specificity and objectivity. These advantages are only achieved through the hardworking process of individualized and controlled design for each experiment. Objective: To design a flow cytometry protocol of a single polychromatic tube for peripheral lymphocyte immunophenotype. Methods: An experimental in vitro study was carried out, in March 2019, with peripheral blood samples obtained from three healthy volunteers, at the National Center for Medical Genetics. The tube was made up of six lineage markers for identifying natural B and T lymphocytes, natural killers and natural killer T cells. A protocol was developed for red blood cell lysis without washing. Fluorochrome-conjugated monoclonal antibodies were used. The optimal point of concentration corresponded to the highest staining index and preservation of the positivity percentages of each population. Progressive tube construction was performed and a logical window sequence strategy was proposed for data analysis. Results: The chosen markers allowed to carry out correct peripheral lymphocyte immunophenotype. Good discriminations between positive and negative signals were observed at the five titration points, except for anti-CD56, which presented a decreasing trend in the staining index. The total volume of conjugates required for determination of the six antigens was 3.75 μL per tube. Conclusions: A polychromatic tube was obtained that allows to carry out peripheral immunophenotype quickly and precisely by six lymphocyte antigens simultaneously, with the use of small volumes of conjugate and blood(AU)

Caracterización de los inmunofenotipos linfocitarios de sangre periférica en pacientes con cáncer / Characterization of peripheral blood lymphocytes immunophenotype in cancer patients

Introducción: La determinación de los inmunofenotipos linfocitarios en sangre periférica forma parte de la evaluación del estado general del sistema inmunitario. Estos exámenes ofrecen informaciones sobre la distribución, concentración y funcionabilidad de las células inmunitarias, lo cual contribuye a establecer pronósticos en el cáncer y predicciones a las respuestas terapéuticas. Objetivo: Evaluar la distribución de las concentraciones linfocitarias circulantes en sangre periférica de pacientes con cáncer. Métodos: Se realizó un estudio analítico en 154 pacientes con cáncer, atendidos en el Instituto de Oncología y Radiobiología de La Habana, durante los años 2017 a 2019. Se empleó la citometría de flujo multiparamétrica para identificar los inmunofenotipos linfocitarios. Este procedimiento se realizó antes de comenzar cualquier tratamiento inmunoterapéutico. Resultados: Los pacientes con cáncer mostraron mayor heterogeneidad en la distribución de las poblaciones linfocitarias respecto a los controles. En los pacientes la mediana de los linfocitos totales y de las subpoblaciones linfocitarias CD3+, CD4+, CD8+ y CD19+ fueron significativamente menores. Los linfocitos T dobles positivos (CD4/CD8) se encontraron elevados significativamente. No se hallaron diferencias entre sexos. La edad se asoció negativamente con las concentraciones de las poblaciones T en tumores sólidos, y con T y B en los linfomas. En el cáncer de próstata se obtuvieron los valores más bajos de poblaciones linfocitarias. Conclusiones: Los pacientes con cáncer tienen menor concentración de linfocitos en sangre periférica que los controles sanos. Las células más afectadas fueron las subpoblaciones T y los linfocitos B. La edad se asoció negativamente con las concentraciones sanguíneas de linfocitos, lo cual pudiera estar en relación con la inmunosenescencia(AU)

Introduction: Determination of lymphocytic immunophenotypes in peripheral blood is part of the evaluation of the general state of the immune system. These tests provide information about the distribution, concentration, and functionality of immune cells, which helps establish prognoses in cancer and predictions of therapeutic responses. Objective: To evaluate the distribution of circulating lymphocyte concentrations in peripheral blood of cancer patients. Methods: An analytical study was carried out with 154 cancer patients treated at the Institute of Oncology and Radiobiology in Havana, from 2017 to 2019. Multiparametric flow cytometry was used to identify lymphocyte immunophenotypes. This procedure was performed before beginning any immunotherapeutic treatment. Results: Cancer patients showed greater heterogeneity in the distribution of lymphocyte populations compared to control patients. The median for total lymphocytes and the lymphocyte subpopulations of CD3+, CD4+, CD8+ and CD19+ were significantly lower in patients. CD4+ CD8+ double-positive T lymphocytes were found to be significantly elevated. No sex differences were found. Age was negatively associated with the concentrations of T-cells populations in solid tumors, and with T- and B-cells populations in lymphomas. In prostate cancer, the lowest values ​​of lymphocyte populations were obtained. Conclusions: Cancer patients have a lower concentration of lymphocytes in peripheral blood than healthy patients in the control group. The most affected ones were the T-cells subpopulations and B lymphocytes. Age was negatively associated with blood levels of lymphocytes, which could be related to immunosenescence(AU)

Distribution of ABO, Rhesus D and Subgroups of ABO among Blood Donors in Sokoto, North Western Nigeria

ABO, Rhesus D and subgroups of ABO are highly immunogenic and are the common cause of antibody production in mismatched blood transfusions, haemolytic transfusion reaction and maternal alloimmunization. The aim of this study was to determine the occurrence of ABO, Rh D and subgroups of ABO among blood donors attending Specialist Hospital Sokoto, Nigeria. ABO, Rhesus D and subgroups of ABO antigen status of 176 blood donors with mean age of 30.44 � 8.210 years attending Specialist Hospital Sokoto were determined using tile method for ABO and Rh D and conventional tube method for anti- A1, anti- H reagents for ABO subgroups respectively. Among the 176 subjects tested, blood group O+ was the most frequent group with 93 (52.8%), 39 (22.2%) were blood group B+, 37(21.0%) were blood group A+, 5 (2.8%) were blood group AB+, 2 (1.1%) were blood group O-. No data was obtained for A-, B- and AB- blood groups. Out of 37 A blood groups obtained, 31 (83.8%) had A1 antigens and 6 (16.2%) had A2 antigens. Out of the 5 AB blood groups, all had A1B antigens. The study also shows that there was statistically significant difference between blood group A and ethnic groups (Hausa, Fulani and Yoruba) (p<0.05). Blood group O was found to be the most frequent followed by B, A and AB except among Hausa which revealed a pattern of O> A> B> AB. ABO, subgroups shows majority had A1 followed by A2 and A1B respectively.

Elderly Mortality and Exposure to Fine Particulate Matter and Ozone

The prognostic significance of primary tumor volume by MRI in cT3 low rectal cancer / 中国实用外科杂志

OBJECTIVE: To evaluate the clinical significance of primary tumor volume(PTV) by preoperative highresolution MRI measurement in subgroup of cT3 low rectal cancer. METHODS: A total of 99 patients with low rectal cancer who confirmed by pathology and assessed at stage-cT3 by MRI,did not undergo neoadjuvant chemoradiotherapy(nCRT) treated in Department of Colorectal Surgery,Fujian Medical University Union Hospital from June 2010 to December 2012 were adopted in the study. The relations between PTV and the depths of tumor infiltration out of mesorectum were analyzed through Spearman correlation analysis. The receiver-operating characteristic(ROC) curve was used to analyze the PTV and 3-year disease-free survival. Cox proportional hazard model was performed for influence factors analysis. RESULTS: The depth of tumor infiltration mesorectum and the PTV were revealed significantly correlated(P 15 cm~3 or PTV≤14.8 cm~3/>14.8 cm~3. The difference between groups revealed significant in the 3-year disease-free survival rate,the local recurrence rate and the distant metastases rate.COX regression analysis was utilized for 3-year disease-free survival,and the multivariate analysis indicated that PTV was an independent impact factor(HR=0.180,95%CI 0.078-0.415,P<0.05). CONCLUSION: The primary tumor volume (PTV) by preoperative high-resolution MRI measurement might be used as a new prognostic parameter for cT3 low rectal cancer.

Development of an Autism Subtyping Questionnaire Based on Social Behaviors / 神经科学通报·英文版

Autism spectrum disorder can be differentiated into three subtypes (aloof, passive, and active-but-odd) based on social behaviors according to the Wing Subgroups Questionnaire (WSQ). However, the correlations between the scores on some individual items and the total score are poor. In the present study, we translated the WSQ into Chinese, modified it, validated it in autistic and typically-developing Chinese children, and renamed it the Beijing Autism Subtyping Questionnaire (BASQ). Our results demonstrated that the BASQ had improved validity and reliability, and differentiated autistic children into these three subtypes more precisely. We noted that the autistic symptoms tended to be severe in the aloof, moderate in the passive, and mild in the active-but-odd subtypes. The modified questionnaire may facilitate etiological studies and the selection of therapeutic regimes.

Expression of Toll Like Receptor 2,4 in PBMC Cells of Children with Henoch Schonleinpurpura and Its Relationship with T-cell Subgroups / 现代检验医学杂志

Objective To analyze the expression of toll like receptor 2/4(TLR2,TLR4)in peripheral blood mononuclear cells (PBMC)cells of children with henoch schonlein purpura(HSP),and investigate its relationship with T-cell subgroups. Methods A total of 85 HSP children treated in Shanghai Children's Medical Center from March 2015 to February 2017 were selected,including 49 children without renal failure(HSP group)and 16 children with renal failure(HSPN group).30 healthy children were enrolled as control group.The expression of TLR2,TLR4 was examined by real-time PCR.The ratio of Th1,Th2,Th17,Treg,Th1/Th2 and Th17/Treg was detected by flow cytometry.The relationship between TLR2,TLR4 and Th1/Th2,Th17/Treg was analyzed.Results The expression of TLR2 in HSPN,HSP and control group were 2.13± 0.36,1.64±0.27 and 1.05±0.12,the expression of TLR4 were 2.21±0.45,1.82±0.34 and 1.13±0.17 respectively.The differences were statistically significant(F=129.630,81.241,all P<0.01).The percentage of Th1,Treg cells and the ratio of Th1/Th2 in HSPN group were significantly lower than those in HSP group and control group,and the differences were statistically significant(F=34.103,63.828,91.432,all P<0.01).The percentage of Th2,Th17 cells and the ratio of Th17/Treg in HSPN group were significantly lower than those in HSP group and control group,and the differences were statisti-cally significant(F=48.559,48.475,34.909,P<0.01).The expression of TLR2 and TLR4 were negatively correlated with Th1/Th2(r=-0.601,-0.652,P<0.01),and positively correlated with Th17/Treg(r=0.617,0.712,P<0.01).Conclu-sion The expression of TLR2,TLR4 increases in HSP children,and may be related to the imbalance of Th1/Th2 and Th17/Treg immune response.

Effect of Combined use of Acupuncture and Medicine on T Cell Subgroups in Ulcerative Colitis Patients / 上海针灸杂志

Objective To investigate the effect of combined use of acupuncture and medicine on T cell subgroups in ulcerative colitis patients. Methods Sixty-four patients with ulcerative colitis were randomly allocated to treatment and control groups, 32 cases each. The treatment group received acupuncture plus medication and the control group, medication alone. After two months of treatment, changes in T cell subgroups were observed in the two groups and the clinical therapeutic effects were compared between the two groups. Results The total efficacy rate was 87.5% in the treatment group and 75.5% in the control group; there was a statistically significant difference between the two groups (P<0.05). There were statistically significant pre-/post-treatment differences in CD3, CD4 and CD4/CD8 in the treatment group (P<0.05). There were statistically significant post-treatment differences in T cell subgroup indices (CD3, CD4 and CD4/CD8) between the treatment and control groups (P<0.05). Conclusions Combined use of acupuncture and medicine is an effective way to treat ulcerative colitis. It can regulate the numbers of CD3 and CD4 and improve bodily immunologic function in the patients.

Anti-inflammatory and Immunization Properties ofRe-Du-Ning Injection in Treatment of AECOPD with Phlegm-heat Stagnated in the Lung Syndrome / 世界科学技术-中医药现代化

This study was aimed to discuss the anti-inflammatory and immunization properties ofRe-Du-Ning (RDN) injection in the treatment of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) with phlegm-heat stagnated in the lung syndrome. A total of 110 in-patients were collected from January 2012 to December 2013. Cases were randomly divided into the treatment group (basic treatment plan + 20 ml RDN injection + 250 mL of 5% GS injection, once a day, intravenous injection) and the control group (basic treatment plan + 20 ml of 0.9% NS injection + 250 mL of 5% GS injection, once a day, intravenous injection), with 55 cases in each group. The treatment course was 14 days. Observations were made on traditional Chinese medicine (TCM) symptom score, clinical effect, blood routine examination, blood gas analysis and T lymphocyte subgroups before and after the treatment in both groups. The results showed that in the aspects of TCM symptom score and clinical effect, the posttreatment TCM symptom score and total integration in the treatment group were obviously improved compared to the control group except for shortness of breath, dry mouth and thirsty, flushing (P < 0.05). The total effective rate was obviously better than that of the control group. In the aspect of anti-inflammation, the total white blood cell (WBC) count and the normal neutrophil percentage of both pretreatment and posttreatment in the treatment group were obviously decreased compared to pretreatment (P < 0.05). However, there were no statistical differences on WBC count and normal neutrophil percentage compared to posttreatment in the control group. In the aspect of blood gas analysis, the posttreatment PaCO2 and PaO2 of the treatment group were obviously better than the control group (P < 0.05). In the aspect of immune regulation, the posttreatment T lymphocyte subgroups CD3+ and CD4+ of the treatment group were higher than the control group. The expression inhibition / cytotoxic lymphocyte (CD8+) was obviously lower than the control group (P < 0.05). The CD4+ / CD8+ was back to the normal reference level. It was concluded that in the treatment of AECOPD with phlegm-heat stagnated in the lung syndrome, on the basis of western medicine symptomatic treatment plan, RDN injection was assisted to clear heat, relieve toxin and remove phlegm. It can obviously improve patient’s clinical symptoms and increase the clinical therapeutic effects. The treatment was especially targeted to infection-induced respiratory failure patients combined low immunity with possible identified therapeutic effects.

Long-term outcome of neoadjuvant chemoradiotherapy based on the depth of invasion in mrT3 low rectal cancer / 中国肿瘤临床

Objective:To investigate the prognosis of cT3 and the subgroups of low rectal cancer patients who underwent neoadju-vant chemoradiotherapy (CRT) and evaluate whether all patients with cT3 low rectal cancer should undergo CRT. Methods:A total of 223 patients with cT3 low rectal cancer treated in the Department of Colorectal Surgery of Fujian Medical University Union Hospital from January 2008 to December 2012 were divided into neoadjuvant chemoradiotherapy group (CRT group) (115 cases) and no neoad-juvant chemoradiotherapy group (nCRT group) (108 cases) according to whether the patients underwent CRT. Afterward, the patients were retrospectively divided into three subgroups (mrT3a, mrT3b, and mrT3c) according to the proposed criteria of the Radiologic Soci-ety of North America (RSNA) by measuring the depth of mesorectal invasion (DMI) (DMI10 mm). The prog-noses of the two groups and their subgroups were compared. Results:The CRT and nCRT groups revealed no significant differences in the 3-year disease-free survival rate and the local recurrence rate for all the mrT3 patients (78.2%vs. 71.9%, P=0.608;4.4%vs. 8.5%, P=0.120) and mrT3a patients (82.4%vs. 81.8%, P=0.837;5.8%vs. 5.9%, P=0.658). On the contrary, for the mrT3b patients, the CRT and nCRT groups revealed significant differences in the 3-year disease-free survival rate (84.4%vs. 42.4%, P=0.032) and local recurrence rate (0.0%vs. 18.2%, P=0.014). For the mrT3b,c patients, the CRT and nCRT groups revealed no significant difference in the 3-year dis-ease-free survival rate (72.8%vs. 42.4%, P=0.060) but revealed a significant difference in the local recurrence rate (2.4%vs. 18.2%, P=0.021). COX regression analysis was utilized for 3-year disease-free survival, DMI and circumferential resection margin (CRM) were significant in the univariate analysis. Additionally, the multivariate analysis indicated that CRM is an independent impact factor (OR=2.249, CI 1.067-4.742, P=0.033). Conclusion:CRT can improve the prognosis of patients with mrT3b,c low rectal cancer but may not significantly influence the prognosis of patients with mrT3a and CRM-negative low rectal cancer;surgical treatment can be performed in these patients without CRT.

Influence of lafutidine combined with omeprazole in serum pepsinogen subgroup levels of patients with chronic atrophic gastritis / 中国综合临床

Objective To investigate influence of lafutidine combined with omeprazole in serum pepsinogen subgroup levels of patients with chronic atrophic gastritis. Methods One hundred and thirty-eight patients with chronic atrophic gastritis were selected in the First Affiliated Hospital of Changchun Traditional Chinese Medicine University from Dec. 2010 to Dec. 2013,who were randomly divided into two groups. Sixty-nine patients treated omeprazole( oral 1 pill/times,1 times/d)as control group,and another 69 patients were treated lafutidine( oral 2 pills/times,2 times/d ) combined with omeprazole as observation group. Both Course of treatment was 8 weeks. Changes of serum pepsinogen subgroups,improvement of clinical symptoms,treatment effect and adverse reactions were compared between two groups. Results After treatment,the levels of pepsinogen I,pepsinogen I/pepsinogen II increased significantly while pepsinogen II decreased significantly in two groups. Pepsinogen I,pepsinogen I/pepsinogen II in observation group were(89. 46 ± 13. 25)μg/L,10. 21 ± 1. 27,significantly higher than control group(( 62. 34 ± 11. 90 )μg/L,6. 45 ± 0. 93;t =7. 358,9. 125;P=0. 017,0. 004). Pepsinogen II in observation group was(8. 76 ± 3. 24)μg/L,significantly lower than control group((9. 68 ± 4. 76 )μg/L,t =4. 035,P =0. 049 ). Stomachache disappearance rate,abdominal distention disappearance rate,loss of appetite disappearance rate,total efficiency in observation group were 89. 9%, 85. 5%,84. 1% and 98. 6% respectively,significantly higher than control group( 73. 9%,65. 2%,60. 9% and 82. 6%),and the differences were statistically significant( P ﹤ 0. 05 ). Incidence of adverse reaction in observation group was 5. 8%,higher than control group( 2. 9%),but the difference was not statistically significant(χ2 =0. 697,P﹥0. 05). Conclusion Lafutidine combined with omeprazole can significantly improve clinical symptoms of patients with chronic atrophic gastritis,which can also significantly improve serum pepsinogen subgroup levels. Lafutidine combined with omeprazole have significant clinical effect and high safety, which is worthy of clinical application.

Molecular Pathologic Classification of Medulloblastoma / 임상소아혈액종양

Medulloblastoma is the most frequent malignant brain tumor in children. Current therapeutic stratification for medulloblastoma is based on age, metastases, extent of resection, and histological variants. Recent molecular pathologic studies have suggested that medulloblastoma is not a single disease but consists of multiple distinct molecular subgroups. The consensus conference concludes four main subgroups, termed as WNT, SHH, Group 3 and Group 4. The subgroups differ in demographics, clinical presentation, transcriptional profile, genetic abnormality, and clinical outcome. The identification of molecular subgroup will lead to the optimal treatment and more targeted therapy for these patients. The molecular classification of medulloblastoma will continue to diversify as larger cohorts and be applicable to the prospective clinical trials. This review outlines the differences between the medulloblastoma subgroups.

Molecular Pathologic Classification of Medulloblastoma / 임상소아혈액종양

Medulloblastoma is the most frequent malignant brain tumor in children. Current therapeutic stratification for medulloblastoma is based on age, metastases, extent of resection, and histological variants. Recent molecular pathologic studies have suggested that medulloblastoma is not a single disease but consists of multiple distinct molecular subgroups. The consensus conference concludes four main subgroups, termed as WNT, SHH, Group 3 and Group 4. The subgroups differ in demographics, clinical presentation, transcriptional profile, genetic abnormality, and clinical outcome. The identification of molecular subgroup will lead to the optimal treatment and more targeted therapy for these patients. The molecular classification of medulloblastoma will continue to diversify as larger cohorts and be applicable to the prospective clinical trials. This review outlines the differences between the medulloblastoma subgroups.

Six Years' Experience Performing ABO Genotyping by PCR-direct Sequencing / 대한수혈학회지

BACKGROUND: ABO genotyping is essential for resolving ABO grouping discrepancy and for determinating ABO subgroups. Most clinical samples, including suspected inherited subgroups and acquired variant phenotypes, can be determined by PCR-sequencing of exons 6 and 7 in the ABO gene. Here, we describe our six years' experience performing ABO genotyping by PCR-direct sequencing. METHODS: We conducted a retrospective investigation of serological and genotypical data from 205 samples (158 patients and 47 of their family members) of patients who were referred to the Molecular Genetics Laboratory at Chonnam National University Hwasun Hospital for ABO genotyping between January 2007 and July 2012. ABO genotyping was performed on all samples with PCR-direct sequencing of exons 6 and 7 in the ABO gene; the standard serologic tests were also performed. RESULTS: The frequency of phenotypes consistent with their genotypes was 70.8% (112/158 cases) and the A2B3 phenotype with the cis-AB01 allele was the most common (31.0%, 49 cases) among them. The frequency of phenotypes inconsistent with their genotypes was 29.1% (46/158 cases) and the A1B3 phenotype was the most frequently recovered case (5.1%, 8 cases). Family study showed differential phenotype expression depending on the co-inherited ABO allele in five families with the B306, cis-AB01, Ael02, Aw14, or B305 allele and also showed a typical inheritance of a chimera with A102/B101/O04. CONCLUSION: We propose that ABO genotyping using PCR-direct sequencing is useful for the resolution of ABO discrepancies and for the investigation of ABO subgroups based on six years' experience. In addition, family study for analysis of phenotypic patterns of ABO subgroups is also crucial to ABO genotyping.

Six Years' Experience Performing ABO Genotyping by PCR-direct Sequencing / 대한수혈학회지

BACKGROUND: ABO genotyping is essential for resolving ABO grouping discrepancy and for determinating ABO subgroups. Most clinical samples, including suspected inherited subgroups and acquired variant phenotypes, can be determined by PCR-sequencing of exons 6 and 7 in the ABO gene. Here, we describe our six years' experience performing ABO genotyping by PCR-direct sequencing. METHODS: We conducted a retrospective investigation of serological and genotypical data from 205 samples (158 patients and 47 of their family members) of patients who were referred to the Molecular Genetics Laboratory at Chonnam National University Hwasun Hospital for ABO genotyping between January 2007 and July 2012. ABO genotyping was performed on all samples with PCR-direct sequencing of exons 6 and 7 in the ABO gene; the standard serologic tests were also performed. RESULTS: The frequency of phenotypes consistent with their genotypes was 70.8% (112/158 cases) and the A2B3 phenotype with the cis-AB01 allele was the most common (31.0%, 49 cases) among them. The frequency of phenotypes inconsistent with their genotypes was 29.1% (46/158 cases) and the A1B3 phenotype was the most frequently recovered case (5.1%, 8 cases). Family study showed differential phenotype expression depending on the co-inherited ABO allele in five families with the B306, cis-AB01, Ael02, Aw14, or B305 allele and also showed a typical inheritance of a chimera with A102/B101/O04. CONCLUSION: We propose that ABO genotyping using PCR-direct sequencing is useful for the resolution of ABO discrepancies and for the investigation of ABO subgroups based on six years' experience. In addition, family study for analysis of phenotypic patterns of ABO subgroups is also crucial to ABO genotyping.

Un modelo explicativo del consumo de alcohol entre estudiantes de licenciatura / An Explanatory Model of Alcohol Consumption among College Students

El objetivo principal del estudio fue elaborar un modelo estructural del consumo estimado de bebidas alcohólicas entre estudiantes de licenciatura, el cual integrara los motivos para beber (Cooper, 1994), expectativas negativas y problemas, amigos bebedores, asistencia a fiestas y búsqueda de sensaciones (Earleywine y Finn, 1991). En una muestra de 138 estudiantes universitarios se elaboraron y/o adaptaron escalas para evaluar las variables mencionadas, y se validaron posteriormente mediante modelos de regresión múltiple. El modelo obtenido mostró que el consumo fue afectado directamente por la asistencia a fiestas y las expectativas negativas, e indirectamente por el afrontamiento, el mejoramiento-social y amigos bebedores; además, los problemas fueron afectados directamente por expectativas negativas, el consumo y fiestas. Finalmente, usando un modelo de clases latentes, se identificaron tres subgrupos de estudiantes con perfiles diferentes de consumo, expectativas negativas, amigos bebedores y motivos de mejoramiento-sociales.

The main purpose of the study was to develop a structural model of estimated consumption of alcoholic beverages among undergraduate students, which integrates the motives for drinking (Cooper, 1994), negative expectations and problems, drinking friends, attending parties and sensation seeking (Earleywine and Finn, 1991). In a sample of 138 college students were developed and / or adapted scales to assess these variables, and subsequently validated by multiple regression analysis. The model obtained showed that consumption was directly affected by attendance at parties and negative expectations, and indirectly by the coping, and social-enhancement and drinking friends, in addition, the problems were directly affected by negative expectations, consumption and parties. Moreover, using a latent class model, we identified three subgroups of students with different profiles of consumption, negative expectations, and motives for drinking friends and social-enhancement.

Exploratory Factor Analysis of the Maudsley Obsessive-Compulsive Inventory in Middle School Students

OBJECTIVES: The purpose of this study was to assess the factor structures related to the Maudsley Obsessive-Compulsive Inventory (MOCI) in middle school students. METHODS: A total of 1,175 7th grade students from four middle schools in Paju city completed the MOCI, Center for Epidemiological Studies-Depression scale (CES-D), and Self Esteem Scale (SES). An exploratory factor (maximum likelihood method with oblique rotation) and correlation analyses were subsequently performed. RESULTS: The two main factors related to the MOCI were 'intrusive thought' and 'contamination'. 'Intrusive thought' was positively correlated with the CES-D and negatively associated with the SES. 'Contamination' had a negative correlation with self-esteem as measured by the SES. CONCLUSION: The results of this study revealed a two-factor structure of obsessive and compulsive symptoms in middle school students.