Ameliorative effects of vitamin B17 on the kidney against Ehrlich ascites carcinoma induced renal toxicity in mice

Cancer is the major cause of death and many factors that lead to its occurrences, such as environmental pollution and pesticides and other factors. Ehrlich carcinoma development depends on many things associated with the environment, nutrition, personal habits, and family history. The present study aimed to evaluate the potential protective effects of vitamin B17 (VB17) against Ehrlich ascites carcinoma (EAC) that induced kidney toxicity in female mice. The mice were divided into five groups (first group, control group; second group, VB17 group; third group, EAC group; fourth group, pretreated EAC with VB17; fifth group, cotreated EAC with VB17). Results showed the VB17 in pretreated (G4) and cotreated (G5) groups lead to an improvement in DNA damage and cytological examination, in addition significantly (P < .05) increase in Na⁺, red blood cell, hemoglobin, hematocrit value, mean corpuscular hemoglobin (MCH), and MCH concentration, whereas significantly (P < .05) decrease in urea, creatinine, K⁺, platelets, and white blood cells while insignificant (P < .05) changes in mean corpuscular volume when compared to the EAC group. Many histopathological changes were observed in kidney sections in EAC as marked damage and degenerated, glomerular atrophy, the Malpighian corpuscles that lost their characteristic configuration. On the other hand, a moderate improvement and arrangement in the kidney histological structure in pretreated VB17 + EAC, while a mild enhancement and arrangement of the kidney structure in cotreated EAC + VB17. In addition, depletion in renal P53 and PCNA protein expression compared with the EAC group. It could be concluded that VB17 has a potential renal protective effect against EAC cells induced kidney injury.     

手术联合置管冲洗引流病灶治疗脊柱结核的Meta分析

目的: 系统分析手术联合置管冲洗引流病灶治疗脊柱结核的治疗效果。 方法: 两位研究者独立对数据库包括中国知网、万方数据知识服务平台、维普数据库、PubMed、EMbase、Cochrane Library进行文献检索,收集关于手术联合置管冲洗引流病灶治疗脊柱结核的随机对照试验 (RCT) 与回顾性研究。语种限中、英文。两位研究者独立评价各研究的质量,且将各研究中的术前和术后视觉模拟评分法(visual analogue score,VAS)、Cobb角、血红细胞沉降率(erythrocyte sedimentation rate,ESR)、C-反应蛋白(C-reactive protein,CRP)等提取整理为电子基线表,并将数据通过Review Manager 5.4 软件进行Meta分析,评估手术联合置管冲洗引流病灶治疗脊柱结核的效果。 结果: 共纳入7篇研究论文,191例患者被纳入分析。Meta分析结果显示:手术联合置管冲洗引流病灶治疗脊柱结核术后与术前VAS评分的均数差为5.33(95%CI:4.11~6.55); 术后与术前Cobb角的均数差为14.47° (95%CI:11.32°~17.61°);术后与术前ESR均数差为40.20mm/1h (95%CI:27.80~52.60);术后与术前 C-反应蛋白的均数差为30.44mg/L (95%CI:12.12~48.76)。 结论: 手术联合置管冲洗引流病灶治疗脊柱结核有较好的治疗疗效,可有效减轻患者疼痛级别,并且能有效改善患者身体畸形状态和身体状况,提高治愈率。     

Caveolin-1 mediates tumor cell migration and invasion and its regulation by miR-133a in head and neck squamous cell carcinoma

MicroRNAs (miRNAs) are small non-coding RNAs of approximately 22 nucleotides that can function as oncogenes or tumor suppressors in human cancer. Down-regulation of the miRNA miR-133a in many type of cancers, and a reduction of cell proliferation, migration, and invasion upon over-expression, suggests that miR-133a is a tumor suppressor. In this study, genome-wide gene expression analysis of HNSCC cells that over-express miR-133a showed that caveolin-1 (CAV1), a multifunctional scaffolding protein, is down-regulated, a result that was confirmed by real-time PCR and Western blot analysis. A luciferase reporter assay revealed that miR-133a is directly bound to CAV1 mRNA. Cancer cell migration and invasion were significantly inhibited in HNSCC cells transfected with si-CAV1. Therefore, CAV1 functions as an oncogene in HNSCC. The identification of tumor suppressive miRNAs and their target genes could provide new insights into potential mechanism of HNSCC carcinogenesis.     

维吾尔药孜尔克中总黄酮、微量元素及脂肪含量的测定

目的:对维吾尔医药孜尔克中总黄酮、微量元素及脂肪含量进行测定。方法:采用分光光度法,测定孜尔克的根和果实中总黄酮的含量。采用索氏抽提法提取并测定孜尔克的根和果实的脂肪含量。用原子吸收分光光度法测定孜尔克中根和果实中钙、铁、钠、钾、铜、锌、锰7种微量元素。结果:总黄酮在0.006~0.06mg.ml-1之间与吸光度有良好的线性关系。回归方程:C=0.0732A-0.002267(mg.ml-1)。相关系数R2=0.9916。元素测定中钙、铁含量较高。结论:本法操作简便,快速,为进一步研究和综合开发利用这一民族药材提供了依据。     

Role of some cytokines on reproduction

Background

The etiology of female reproductive failure may be very complex owing to a neuro-endocrine-immune association. Dysregulated immunity has been implicated in reproductive failure. Lower TH1 cytokines is supportive for physiological pregnancy.

Aim of the study

To measure serum levels of pro-inflammatory cytokines (tumor necrosis factor (TNF-α), interferon-gamma (IFN-γ) and anti-inflammatory cytokines (IL-10 and IL-6) in reproductive failure women.

Patients and methods

A cross- sectional study was carried out in Kammal El-Sammrari Hospital from 2008 to 2010. Forty-five women with reproductive failure participated in the study. Serum levels of cytokines (IL-6, IL-10, TNF-alpha and IFN-gamma) were done by Enzyme Linked Immuno Sorbent Assay (ELISA) and compared with age, body mass index and ethnicity matched thirty fertile women.

Results

There is a significant increase in IL-10 (18.09) (p = 0.002) and IFN-γ (49.62) (p = 0.0001) in women with reproductive failure. TNF-α and IL-6 showed no significance different with fertile group.

Conclusions

There is increase in IL-10 and IFN-γ in women with reproductive failure.     

Tumor suppressive microRNA-375 regulates oncogene AEG-1/MTDH in head and neck squamous cell carcinoma (HNSCC)

Our microRNA (miRNA) expression signatures of hypopharyngeal squamous cell carcinoma, maxillary sinus squamous cell carcinoma and esophageal squamous cell carcinoma revealed that miR-375 was significantly reduced in cancer tissues compared with normal epithelium. In this study, we focused on the functional significance of miR-375 in cancer cells and identification of miR-375-regulated novel cancer networks in head and neck squamous cell carcinoma (HNSCC). Restoration of miR-375 showed significant inhibition of cell proliferation and induction of cell apoptosis in SAS and FaDu cell lines, suggesting that miR-375 functions as a tumor suppressor. We adopted genome-wide gene expression analysis to search for miR-375-regulated molecular targets. Gene expression data and luciferase reporter assays revealed that AEG-1/MTDH was directly regulated by miR-375. Cancer cell proliferation was significantly inhibited in HNSCC cells transfected with si-AEG-1/MTDH. In addition, expression levels of AEG-1/MTDH were significantly upregulated in cancer tissues. Therefore, AEG-1/MTDH may function as an oncogene in HNSCC. The identification of novel tumor suppressive miRNA and its regulated cancer pathways could provide new insights into potential molecular mechanisms of HNSCC oncogenesis.     

Surgical treatment of thoracolumbar fracture with incomplete lower limb paralysis in a patient with COVID-19

Since December 2019, COVID-19, an acute infectious disease, has gradually become a global threat. We report a case of thoracolumbar fractures (T12 and L1) and incomplete lower limb paralysis in a patient with COVID-19. After a series of conservative treatment which did not work at all, posterior open reduction and pedicle screw internal fixation of the thoracolumbar fracture were performed in Wuhan Union Hospital. Three weeks later, the patient could stand up and the pneumonia is almost cured. We successfully performed a surgery in a COVID-19 patient, and to our knowledge it is the first operation for a COVID-19 patient ever reported.     

Glutathione S-transferase P1 (GSTP1) suppresses cell apoptosis and its regulation by miR-133α in head and neck squamous cell carcinoma (HNSCC)

The glutathione S-transferase P1 (GSTP1) protein plays several critical roles in both normal and neoplastic cells, including phase II xenobiotic metabolism, stress responses, signaling and apoptosis. Overexpression of GSTP1 has been observed in many types of cancer, including head and neck squamous cell carcinoma (HNSCC). However, the role of GSTP1 in HNSCC is not well understood. We investigated the role of GSTP1 in two HNSCC cell lines, HSC3 and SAS. Silencing of GSTP1 revealed that cancer cell proliferation was significantly decreased in both cell lines. In addition, the frequency of apoptotic cells increased following si-GSTP1 transfection of HSC3 and SAS cell lines. Growing evidence suggests that microRNAs (miRNAs) negatively regulate gene expression and can function as oncogenes or tumor suppressors in human cancer. Based on the results of web-based searches, miR-133α is a candidate miRNA targeting GSTP1. Down-regulation of miR-133α has been reported in many types of human cancer, including HNSCC. Transient transfection of miR-133α repressed the expression of GSTP1 at both the mRNA and protein levels. The signal from a luciferase reporter was significantly decreased at one miR-133α target site at the 3'UTR of GSTP1, suggesting that miR-133α directly regulates GSTP1. Our data indicate that GSTP1 may have an oncogenic function and may be regulated by miR-133α, a tumor suppressive miRNA in HNSCC. The identification of a novel oncogenic pathway could provide new insights into potential mechanisms of HNSCC carcinogenesis.