Analysis of expression, methylation, and clinical significance of ELTD1 in clear cell renal cell carcinoma based on bioinformatics / 中国肿瘤生物治疗杂志

@#[摘 要] 目的：探讨表皮生长因子蛛毒素受体7穿膜结构域蛋白1（ELTD1）在肾透明细胞癌（ccRCC）组织中的表达、甲基化水平及其与患者临床病理特征和预后的相关性。方法：通过公共数据库分析ccRCC组织中ELTD1表达和甲基化的差异水平，探讨ELTD1表达水平与患者临床病理特征和预后的相关性。通过TIMER2.0数据库评估ccRCC免疫细胞浸润，筛选ELTD1相关免疫检查点基因，进行GO功能和KEGG通路富集分析，通过基因共表达分析、筛选与ELTD1相关的基因。结果：与癌旁组织比较，ELTD1在ccRCC组织中呈高表达（P<0.05）。TCGA-KIRC队列中，ELTD1的甲基化水平与其表达呈负相关（R=-0.37，P<0.01）。ELTD1转录表达在ccRCC患者年龄、T分期、M分期、临床分期及病理分级组间存在显著差异（均P<0.01），且高表达ELTD1与较长的OS和PFS密切相关（HR=0.55、0.63，均P<0.01），ELTD1高表达是ccRCC的独立保护因素。ELTD1表达与B细胞、CD4+ T细胞、CD8+ T细胞、巨噬细胞和嗜中性粒细胞的免疫浸润呈显著负相关（R=-0.16、-0.27、-0.25、-0.31、-0.27，均P<0.01）。GO功能和KEGG通路富集分析结果显示，血管生成及肿瘤相关信号通路在ELTD1高表达表型中显著富集（均P<0.01）。ELTD1共表达基因的生存分析提示，其肿瘤抑制作用与共表达网络有关。结论：ELTD1在ccRCC组织中高表达和低甲基化是患者预后良好的指标，且与免疫浸润相关。

The etiologies of post-stroke depression: Different between lacunar stroke and non-lacunar stroke

Abstract Objectives: Depression is common after both lacunar stroke and non-lacunar stroke and might be associated with lesion locations as proven by some studies. This study aimed to identify whether lesion location was critical for depression after both lacunar and non-lacunar strokes. Methods: A cohort of ischemic stroke patients was assigned to either a lacunar stroke group or a non-lacunar stroke group after a brain MRI scan. Neurological deficits and treatment response was evaluated during hospitalization. The occurrence of depression was evaluated 3 months later. Logistic regressions were used to identify the independent risk factors for depression after lacunar and non-lacunar stroke respectively. Results: 83 of 246 patients with lacunar stroke and 71 of 185 patients with non-lacunar stroke developed depression. Infarctions in the frontal cortex, severe neurological deficits, and a high degree of handicap were identified as the independent risk factors for depression after non-lacunar stroke, while lesion location was not associated with depression after lacunar stroke. Conclusion: The main determinants for depression after lacunar and non-lacunar stroke were different. Lesion location was critical only for depression after non-lacunar stroke.

Retrospective analysis of the treatment of mandibular condylar sagittal fracture with Kirschner wire in 13 cases / 口腔疾病防治

Objective@#To evaluate the value of Kirschner wire internal fixation in the treatment of sagittal mandibular condylar fractures.@*.Methods @#From January 2019 to January 2020, 13 patients (19 sides) with mandibular condylar sagittal fracture treated by Kirschner wire internal fixation at the Stomatological Medical Center, Foshan Hospital of Traditional Chinese Medicine were retrospectively analyzed. After conventional surgical incision and exposure and reduction of the mandibular condyle, 2-4 Kirschner wires were used for fixation, and other maxillofacial fractures were treated simultaneously. The reduction accuracy and stability of the free mandibular condyle were evaluated by CBCT one week after the operation, and the occlusion relationship, opening degree and opening type were evaluated by clinical examination.@*Results@#All patients had good fracture alignment and no twisting, breaking or loosening of the Kirschner wire. The occlusion relationship, opening degree and opening shape recovered well after the operation.@*Conclusion@# Kirschner wire is effective in treating sagittal fractures of mandibular condyles.

Screening and verification of proteins of Salvia miltiorrhiza polyphenol oxidase interaction / 中国中药杂志

Polyphenol oxidase(PPO) is an important antioxidant enzyme in plants. It has the functions of scavenging active oxygen and synthesizing phenols, lignin, and plant protection factors, and can enhance the plant's resistance to stress and resistance to pests and diseases. Our previous research found that Salvia miltiorrhiza PPO gene can positively regulate salvianolic acid B synthesis. In order to further explore the mechanism, a pGBKT7-PPO bait vector was constructed using the cloned S. miltiorrhiza polyphenol oxidase gene(SmPPO, GenBank accession number: KF712274.1), and verified that it had no self-activation and no toxicity. The titer of S. miltiorrhiza cDNA library constructed by our laboratory was 4.75 × 107 cfu·mL~(-1), which met the requirements for library construction. Through yeast two-hybrid test, 22 proteins that could interact with SmPPO were screened. Only yeast PAL1 and TAT interacted with SmPPO through yeast co-transformation verification. Further verification was performed by bimolecular fluorescence complementary detection(BiFC). Only TAT and SmPPO interacted, so it meant that TAT and SmPPO interacted. TAT and SmPPO were truncated according to the domain, respectively. The first 126 amino acids of SmPPO and tyrosine amino transferase(TAT) were obtained to interact on the cell membrane and chloroplast. SmPPO was obtained by subcellular localization test, which was mainly loca-lized on the nucleus and cell membrane; TAT was localized on the cell membrane. Real-time quantitative PCR results showed that the SmPPO gene was mainly expressed in roots and stems; the TAT gene was expressed in roots, and the expression level in stems and flowers was low. This article lays a solid foundation for the in-depth study of the molecular mechanism of the interaction of S. miltiorrhiza SmPPO and TAT to regulate the synthesis of phenolic substances.

Clinical analysis of 5 cases of odontogenic maxillofacial-neck-mediastinal infection treated with negative pressure sealing drainage / 口腔疾病防治

Objective @#To explore the effect of negative pressure sealing drainage on the treatment of maxillofacial-neck-mediastinal infection in multiple spaces.@*Methods@# Vacuum sealing drainage (VSD) was applied in five patients with maxillofacial-neck-mediastinal infection caused by odontogenic infection accompanied by diabetes or renal failure and other systemic diseases. After extensive debridement, a negative pressure drainage sponge was placed in the pus cavity and then the wound was closed. Continuous negative pressure drainage was continued after the operation. At the same time, multidisciplinary consultation was applied to control basic diseases and, strengthen anti-inflammatory responses, and nutrition and other systemic treatments were applied.@*Results@#Four patients underwent continuous negative pressure drainage and successful removal of the negative pressure sponge after inflammatory symptoms subsided. One patient′s inflammatory symptoms became more serious after the operation, and we performed another operation to change the placement of the negative pressure sponge. All 5 patients underwent VSD with negative pressure sponge replacement ranging from 1 to 3 times during treatment. After multidisciplinary consultation, they were all cured and discharged from the hospital.@*Conclusion@#For infection of the mediastinum, maxillofacial region and neck, local treatment and systemic treatment are emphasized, as well as the treatment of infected lesions and basic diseases. Negative pressure closure and drainage technology promotes the alleviation of inflammation, and multidisciplinary combined treatment is beneficial for the control of basic diseases.

Ramipril can alleviate the accumulation of renal mesangial matrix in rats with diabetic nephropathy by inhibiting insulin-like growth factor-1

Abstract Purpose: To investigate the impact of Ramipril (RAM) on the expressions of insulin-like growth factor-1 (IGF-1) and renal mesangial matrix (RMM) in rats with diabetic nephropathy (DN). Methods: The Sprague Dawley rats were divided into normal control (NC) group (n = 12), DN group (n = 11), and DN+RAM group (n = 12). The ratio of renal weight to body weight (RBT), fasting blood glucose (FBG), HbA1c, 24-h urine protein (TPU), blood urea nitrogen (BUN), creatinine (Cr), renal pathological changes, the levels of IGF-1, fibronectin (FN), type IV collagen (Col-IV), and matrix metalloproteinases (MMP)-2 were compared among the groups. Results: Compared with NC group, the RBT, FBG, HbA1c, TPU, BUN, Cr, and RMM in DN group were significantly increased (P < 0.05), the IGF-1, FN, and Col-IV were significantly upregulated (P < 0.05), while MMP was significantly downregulated (P < 0.05). Compared with DN group, the indexes except for the FBG and HbA1c in DN+RAM group were significantly improved (P < 0.05), among which IGF-1 exhibited significant positive correlation with TPU(r=0.937), FN(r=0.896) and Col-IV(r=0.871), while significant negative correlation with MMP-2 (r=-0.826) (P<0.05). Conclusion: RAM may protect the kidneys by suppressing IGF-1 and mitigating the accumulation of RMM.

Expression of FMN2 in gastric adenocarcinoma tissues and its clinical significance / 中国肿瘤生物治疗杂志

@# Objective: To investigate the expression of Formin-2（FMN2）protein in gastric cancer tissues and its correlation to clinicopathological features of gastric cancer patients, as well to explore its effect on the proliferation of gastric adenocarcinoma AGS cells. Methods: 84 cases of gastric adenocarcinoma tissues and corresponding para-cancerous tissues were surgically collected from patients treated in the First Affiliated Hospital of Air Force Military Medical University from September 2015 to September 2017. The expression of FMN2 in gastric adenocarcinoma tissues was detected by immunohistochemical staining and analyzed with RNA-Seq data-sets GEPIA. The relationship between FMN2 protein expression in gastric adenocarcinoma tissues and its clinicopathological features was also explored. MTT assay was used to detect the effect of FMN2 onAGS cell proliferation activity, and Western blotting was used to detect the effect of FMN2 on the expression of apoptosis-related protein caspase-3 in AGS cells. Results: The expression level of FMN2 in gastric adenocarcinoma tissues was significantly lower than that in matched adjacent tissues and the expression level of FMN2 was closely related to the TNM stage and differentiation of gastric adenocarcinoma (all P<0.05). Compared toAGS control group, the proliferation activity of AGS/FMN2 was significantly decreased and the expression of apoptosis-related gene Caspase-3 was markedly increased (all P<0.05). Conclusion: The expression of FMN2 was significantly decreased in gastric adenocarcinoma tissues and its low expression is closely related to the degree of tumor differentiation and clinical TNM stage. Moreover, FMN2 over-expression significantly decreased the proliferation of AGS cells. FMN2 may function as independent risk factor for the prognosis of gastric adenocarcinoma, which may provide new ideas for the treatment of gastric adenocarcinoma.

Does Cimicifuga racemosa have the effects like estrogen on the sublingual gland in ovariectomized rats?

BACKGROUND: Cimicifuga racemosa is one of the herbs used for the treatment of climacteric syndrome, and it has been cited as an alternative therapy to estrogen. Apart from hectic fevers, dyspareunia and so on, dry mouth also increase significantly after menopause. It has not yet been reported whether C. racemosa has any impact on the sublingual gland, which may relate to dry mouth. In an attempt to determine this, we have compared the effects of estrogen and C. racemosa on the sublingual gland of ovariectomized rats. RESULTS: HE staining showed that the acinar cell area had contracted and that the intercellular spaces were broadened in the OVX (ovariectomized rats) group, while treatment with estradiol (E2) and iCR (isopropanolic extract of C. racemosa) improved these lesions. Transmission electron microscopy showed that rough endoplasmic reticulum expansion in mucous and serous acinar epithelial cells and apoptotic cells was more commonly seen in the OVX group than in the SHAM (sham-operated rats) group. Mitochondria and plasma membrane infolding lesions in the striated ducts were also observed. These lesions were alleviated by both treatments. It is of note that, in the OVX + iCR group, the volume of mitochondria in the striated duct was larger than in other groups. Immunohistochemical staining showed that the ratio of caspase-3 positive cells was significantly increased in the acinar cells of the OVX group compared with the SHAM group (p < 0.05); and the MA (mean absorbance) of caspase-3 in the striated ducts also increased (p < 0.05). Estradiol decreased the ratio of caspase-3 positive cells and the MA of caspase-3 in striated ducts significantly (p < 0.05). ICR also reduced the ratio of caspase-3 positive cells and the MA in the striated ducts (p < 0.05), but the reduction of the MA in striated ducts was inferior to that of the OVX + E2 group (p < 0.05). CONCLUSION: Both estradiol and iCR can inhibit subcellular structural damage, and down-regulate the expression of caspase-3 caused by ovariectomy, but their effects were not identical, suggesting that both drugs confer a protective effect on the sublingual gland of ovariectomized rats, but that the specific location and mechanism of action producing these effects were different.

Introduction and analysis of the latest changes in head and neck cancer staging / 中国肿瘤临床

The TNM staging system is an essential standard for cancer treatment and evaluation, and is used to assess a patient''s prog-nosis. Therefore, every update made to the system is of great significance. According to the recently released edition of the American Joint Committee on Cancer (AJCC) Staging Manual, several major changes to head and neck cancer staging have been made. In this pa-per, we analyze the advantages and disadvantages of these amendments and offer a direction for making future amendments. Our goal is to provide a brief introduction of recent research on head and neck cancers, which can be used as a reference by clinicians.

Clinical effect of mouth floor approach intubation in jaw fracture combined with brain injury / 口腔疾病防治

Objective @#To explore the effects of mouth floor approach intubation in the treatment of jaw fracture combined with skull base injury.@*Methods @#From Jan. 2014 to Oct. 2015, 7 cases of jaw fracture combined with skull base injury were selected from Medical center of Stomatology, Foshan Hospital of Traditional Chinese Medicine (FSTCM). All cases were treated with mouth floor approach intubation, because they were not suitable to be given the oral or nasal intubation anesthesia. @*Results @#All the patients healed well after operation, and there was no tube accident or other complications.@*Conclusions@# For patients of jaw fracture combined with skull base injury, the mouth floor approach intubation could be recommended as a supplementary choice for traditional intubation methods.

A low-pH medium in vitro or the environment within a macrophage decreases the transcriptional levels of fimA, fimZ and lrp in Salmonella enterica serovar Typhimurium.

Many Salmonella Typhimurium isolates produce type 1 fimbriae and exhibit fimbrial phase variation in vitro. Static broth culture favours the production of fimbriae, while solid agar medium inhibits the generation of these appendages. Little information is available regarding whether S. Typhimurium continues to produce type 1 fimbriae during in vivo growth. We used a type 1 fimbrial phase-variable strain S. Typhimurium LB5010 and its derivatives to infect RAW 264.7 macrophages. Following entry into macrophages, S. Typhimurium LB5010 gradually decreased the transcript levels of fimbrial subunit gene fimA, positive regulatory gene fimZ, and global regulatory gene lrp. A similar decrease in transcript levels was detected by RT-PCRwhen the pH of static brothmediumwas shifted frompH 7 to amore acidic pH 4. A fimA-deleted strain continued to multiply within macrophages as did the parental strain. An lrp deletion strain was unimpaired for in vitro growth at pH 7 or pH 4, while a strain harboring an lrp-containing plasmid exhibited impaired in vitro growth at pH 4. We propose that acidic medium, which resembles one aspect of the intracellular environment in a macrophage, inhibits type 1 fimbrial production by down-regulation of the expression of lrp, fimZ and fimA.

Overexpression of Fc receptor-like 1 associated with B-cell activation during hepatitis B virus infection

The role of B cells in the pathogenesis of hepatitis B virus (HBV) infection has not been explored in depth. In the present study, the activation status of B cells from peripheral blood of healthy controls (N = 20) and patients with acute hepatitis B (AHB, N = 15) or chronic hepatitis B (CHB, N = 30) was evaluated by measuring the expression levels of B-cell activation markers CD69 and CD86, using quantitative real-time PCR and flow cytometry. Moreover, the potential mechanism underlying B-cell activation during HBV infection was further investigated by analyzing the expression profile of FCRL1, an intrinsic activation molecule of B cells. An elevation in the levels of B-cell activation markers including CD69 and CD86 was observed in the AHB patients (44.31 ± 9.27, 27.64 ± 9.26%) compared to CHB patients (30.35 ± 11.27, 18.41 ± 6.56%, P < 0.05), which was still higher than healthy controls (12.23 ± 7.84, 8.22 ± 3.43%, P < 0.05). Furthermore, the expression of FCRL1 was found to be similar to B-cell activation markers, which was highest in AHB patients (70.15 ± 17.11%), lowest in healthy donors (36.32 ± 9.98%, P < 0.05) and half-way between these levels in patients with CHB (55.17 ± 12.03%, P < 0.05). The results were positively associated with aberrant B-cell activation. These data suggest that B cells can play a role in HBV infection, and therefore more effort should be devoted to exploring their functions.