TFIIB-related factor 1 (BRF1) is an important transcription factor. It specifically regulates the transcription of RNA polymerase III-dependent genes (RNA Pol III genes). The products of these genes are some small non-coding RNAs, including transfer RNAs (tRNAs) and 5S ribosomal RNAs (5S rRNA). The transcription levels of tRNAs and 5S rRNA vary with changes in intracellular BRF1 amounts. tRNAs and 5S rRNA play a crucial role in determining protein synthesis. Studies have demonstrated that dysregulation of tRNAs and 5S rRNA is closely related to cell growth, proliferation, transformation, and even tumorigenesis. BRF1 is a key factor determining the generation of tRNAs and 5S rRNA. Increasing BRF1 expression enhances cell proliferation and transformation, promoting tumor development. In contrast, repressing BRF1 activity decreases the rates of cell proliferation and transformation, and inhibits tumor growth. High levels of BRF1 are found in the samples of patients suffering from hepatocellular carcinoma, breast cancer, gastric carcinoma, lung cancer, prostate carcinoma, and other cancers. It indicates that high levels of BRF1 are closely related to the occurrence of human cancer and may be a common landmark of tumors. But there is discrepancy in the regulatory mechanisms and signaling pathways of BRF1 overexpression in different cancers. In general, high levels of BRF1 in patients suffering from cancer show short survival period and poor prognosis. However, there is one exception, namely breast cancer. Approximate 80% of cases of breast cancer are estrogen receptor-positive (ER+) and 20% are ER-. The cases with high levels of BRF1 reveal longer survival period and better prognosis after they accepted the hormone treatment by Tamoxifen (Tam), compared to the cases with low level BRF1. It seems like a contradiction. Most of the cases with high levels of BRF1 belong to ER+ status. Tam has been used to treat ER+ cases of breast cancer after diagnosis and surgery. Thus, hormone therapy, such as Tam, is more effective on these patients. This is because, on one hand, that Tam competes with E2 (17β-estradiol) to bind to estrogen receptor α (ERα), but does not dissociate to occupy the receptors, blocking E2 binding to this receptor and inhibiting its biological effects. On other hand, Tam can inhibit the expression of BRF1, leading to a decline of intracellular BRF1 levels. Therefore, the actual levels of BRF1 are lower in the patients with ER+ breast cancer. It appears the prognosis of the high BRF1 expression cases better than that of the low BRF1 expression cases. Myocardial hypertrophy manifests magnification of cardiomyocyte volume rather than number increasing in the postnatal heart. Myocardial hypertrophy is a critical risk factor underlying cardiovascular diseases. No matter how myocardial hypertrophy occur, it will ultimately lead to myocardial dysfunction and heart failure. Hypertrophic growth of cardiomyocytes requires a large amount of protein synthesis to meet its needs of cardiomyocyte growth. Animal models and cell experiments have shown that myocardial hypertrophy stimulates a significant increase in BRF1 expression and transcription of tRNAs and 5S rRNA. Interestingly, elevated levels of BRF1 are found in the myocardium tissues of patients with myocardial hypertrophy. These studies demonstrate that BRF1 indeed plays a critical role in myocardial hypertrophy. In summary, high levels of BRF1 are found in patients suffering from different cancers and myocardial hypertrophy. It implies that BRF1 is a promising biological target of cancer and cardiomyopathy. BRF1 is expected to become a common biomarker for early diagnosis and prognostic observation of different human cancers. It is also an important biomarker for the diagnosis and treatment of cardiomyopathy. BRF1 not only holds an important position in the field of basic medical research but also has great prospects for translational medicine. In the present article, we summarize the progress on studies of BRF1 expressions in cancer and cardiomyopathy, proposes future research directions. It is a new research area. Here, we emphasize the significancy of BRF overexpression in the two huge diseases of human, cancer and cardiomyopathy to raise people's attention to this field.

A rapid quantitative immunochromatographic assay for procalcitonin(PCT)using metal-organic frameworks modified with gold and platinum nanoparticles(MAPs)as labels was established in this work.The detection probe was prepared by conjugating MAPs with anti-PCT monoclonal antibody via an electrostatic adsorption method.Anti-PCT polyclonal antibody and sheep anti-mouse IgG were sprayed onto the nitrocellulose(NC)membrane as the test line and quality control line,respectively,to construct immunochromatographic strip for PCT quantitative detection via signal-amplification-based sandwich immunoassay.The results showed that the MAP-based immunochromatographic test had high sensitivity,high specificity,and good stability.The dynamic range for detection of PCT was 0.61 pg/mL-320 ng/mL,the detection limit was 0.25 pg/mL,and the intra-day and inter-day precision(Relative standard deviation)were less than 15%.The results of real sample analysis showed that a quite low volume of sample was required for detection of PCT in whole blood,which was of great significance for the early diagnosis,monitoring and treatment,and prognosis of inflammation.

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.

Objective To investigate the effect of the third party evaluation on improving the quality of medical service as well as the degree of patient trust in hospital.Methods Discharge patients from a two-level hospital in Minhang District was enrolled to evaluate their trust for medical service.Telephone follow-up were implemented in group A by the third party evaluation team.Group B was evaluated by the in-patient department when they left the hospital.These two evaluation methods were compared for the effects.Results During the first evaluation,1 073 people in group A,the equipartition satisfaction was 3.83 ± 0.57,the satisfaction rate was 54.99％.While in group B of 1 480 people,the equalization satisfaction was 3.83 ± 0.49,the satisfaction rate was 57.03％ (P＞0.05).At the fourth evaluation,1 233 people in group A and 1 512 people in group B were evaluated.Regarding group A,the patient satisfaction scores was 4.18 ± 0.33,patients satisfaction rate was 84.43％,the equipartition of patients referral was 3.44 ± 0.83,the equipartition of patients recommends the physician was 3.52 ±0.88,the equipartition of the doctor and patient had a quarrel was 4.33 ± 0.60,the equipartition of patients will find another doctor for diagnosis was 3.31 ± 0.72,the equipartition of patients expressed fully in accordance with the doctor's order of medication was 3.45 ± 0.72,group A were better than groupB (P＜0.05).Of the28 entries in the level of trust related to medical services,15 entries of group A were higher than group B (P＜0.05).In group A,the equipartition of moderate intensity activity was 3.62 ± 0.81,the equipartition of emotional coordination refers to 3.71 ± 0.76,the equipartition of family coordination was 3.69 ± 0.58,the equipartition of friends coordination was 3.73 ± 0.74,the equipartition of overall health was 3.31 ± 0.77,all were superior to group B (P＜0.05).Conclusions The third party evaluation is a supplementation for hospital management,which has positive effects on improving medical service quality of medical institutions,the hospital performance appraisal system,patients' experiences and trust degree.

Objective To quantitative the changing information of estrogen receptor βgene which was in tissue and organ of sex gland during oestrus and dioestrus of Beagles, and to show the different expression situation of hypothalamus-pituitary-gonad axis during oestrus and dioestrus, and providing the basic of theory to research deeply the mechanism of heat of Beagles. Methods As the key gene in regulation reproduction, ERβgene is located in hypothalamus-pituitary-gonad axis, so using Beagles which was in oestrus and dioestrus, and extract the RNA from hypothalamus、pituitary、ovary and uterus respectively,after reverse transcription we detected the expression of ERβgene by real-time quantitative PCR.Results The expression of ERβgene mRNA from ovary、uterus、pituitary、hypothalamus of Beagles which was in dioestrus was 0.35 times, 0.17 times, 0.44 times and 0.43 times than the expression of ERβgene mRNA from ovary, uterus, pituitary, hypothalamus of Beagles which was in oestrus.Conclusion The expression of ERβgene was up-regulation in hypothalamus-pituitary-ovary axis of Beagles which was in oestrus.

OBJECTIVETo detect the serum specific proteins in tumor-like polypoid lesions of the gallbladder patients and establish diagnostic model.

METHODSSurface enhanced laser desorption/ionization time of flight mass spectrometry (SELDI-TOF-MS) technique and WCX Magnetic Beads were used to detect the serum proteomic patterns of 23 patients with tumor-like PLG, 21 patients with non tumor-like PLG and 26 normal persons. Biomarker Wizard and Biomarker Patterns Software were used in combination to analyze the data.

RESULTSPreliminary screening out 22 representative specific proteins for the diagnosis of the tumor-like PLG. Analysis system under the conditions set selected 3 specific proteins to establish diagnostic model for the tumor-like PLG. The sensitivity and specificity of the model for the diagnosis of the tumor-like PLG were 100% and 89.4%, respectively.

CONCLUSIONSELDI-TOF-MS technique can select specific protein of the tumor-like PLG, and establish diagnostic model of the tumor-like PLG.

Adult ; Aged ; Biomarkers, Tumor ; blood ; Blood Proteins ; analysis ; Female ; Gallbladder Neoplasms ; diagnosis ; Humans ; Male ; Middle Aged ; Polyps ; diagnosis ; Sensitivity and Specificity ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization

OBJECTIVETo investigate the effect of ischemic preconditioning on chaperone hsp70 expression and protein aggregation in the CA1 neurons of rats, and to further explore its potential neuroprotective mechanism.

METHODSTwo-vesseloccluded transient global ischemia rat model was used. The rats were divided into sublethal 3-min ischemia group, lethal 10-min ischemia group and ischemic preconditioning group. Neuronal death in the CA1 region was observed by hematoxylineosin staining, and number of live neurons was assessed by cell counting under a light microscope. Immunochemistry and laser scanning confocal microscopy were used to observe the distribution of chaperone hsp70 in the CA1 neurons. Differential centrifuge was used to isolate cytosol, nucleus and protein aggregates fractions. Western blot was used to analyze the quantitative alterations of protein aggregates and inducible chaperone hsp70 in cellular fractions and in protein aggregates under different ischemic conditions.

RESULTSHistological examination showed that ischemic preconditioning significantly reduced delayed neuronal death in the hippocampus CA1 region (P < 0.01 vs 10-min ischemia group). Sublethal ischemic preconditioning induced chaperone hsp70 expression in the CA1 neurons after 24 h reperfusion following 10-min ischemia. Induced-hsp70 combined with the abnormal proteins produced during the secondary lethal 10-min ischemia and inhibited the formation of cytotoxic protein aggregates (P < 0.01 vs 10-min ischemia group).

CONCLUSIONIschemic preconditioning induced chaperone hsp70 expression and inhibited protein aggregates formation in the CA1 neurons when suffered secondary lethal ischemia, which may protect neurons from death.

Animals ; Brain Ischemia ; pathology ; Cell Count ; methods ; Cell Death ; Disease Models, Animal ; Gene Expression Regulation ; physiology ; HSP70 Heat-Shock Proteins ; metabolism ; Hippocampus ; blood supply ; metabolism ; pathology ; Ischemic Preconditioning ; Male ; Neurons ; metabolism ; Proteins ; metabolism ; Rats ; Rats, Wistar ; Time Factors

OBJECTIVETo detect the serum specific proteins in pancreatic cancer patients and establish diagnostic model by surface enhanced laser desorption/ionization time of flight mass spectrometry (SELDI-TOF-MS) technique.

METHODSTwenty-nine serum samples from patients of pancreatic cancer were collected before surgery and an additional 57 serum samples from age and sex matched individuals without cancer were used as controls, SELDI-TOF-MS technique and WCX magnetic beads were used to detect the protein fingerprint expression of all the serum samples and the resulting profiles between pancreatic cancer patients and controls were analyzed with biomarker wizard system, established the model using biomarker patterns system software. A double-blind test was used to determine the sensitivity and specificity of the classification model.

RESULTSA panel of four biomarkers (relative molecular weight are 5705, 4935, 5318 and 3243 Da) were selected to set up a decision trees as the classification model for screening pancreatic cancer effectively. The result yielded a sensitivity of 100%, specificity of 97.4%. The double-blind test challenged the model with a sensitivity of 88.9% and a specificity of 89.5%.

CONCLUSIONSSELDI-TOF-MS offers a unique platform for the proteomic detection of serum in pancreatic cancer patients. It also offers a noninvasive method to further study the proteomic changes in the development and progression of pancreatic cancer.

Biomarkers, Tumor ; blood ; Blood Proteins ; analysis ; Early Detection of Cancer ; Humans ; Mass Screening ; Pancreatic Neoplasms ; blood ; diagnosis ; Proteomics ; Sensitivity and Specificity ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization

To study the anticancer activity of griffithin from Streptocaulon griffithii Hook. f. and its effect on apoptosis of cancer cells in vitro, the inhibitory effect of griffithin on cell proliferation was studied by MTT assay, the cell apoptosis was observed by AO/EB double decoration assay and flow cytometry. Griffithin exhibited high anticancer activity on four human cancer cell lines, with IC50 ranged from 0.17 - 0.43 microg x mL(-1). Griffithin also induced apoptosis of PC-3 cells. Griffithin had anticancer activity and induced apoptosis of cancer cells.
Antineoplastic Agents, Phytogenic ; chemistry ; isolation & purification ; pharmacology ; Apocynaceae ; chemistry ; Apoptosis ; drug effects ; Cardenolides ; administration & dosage ; chemistry ; isolation & purification ; pharmacology ; Cell Cycle ; drug effects ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Cell Survival ; drug effects ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; pharmacology ; Flow Cytometry ; HL-60 Cells ; Humans ; Inhibitory Concentration 50 ; Microscopy, Fluorescence ; Molecular Structure ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry