Background: Osteoporotic vertebral fracture (OVF) is one of the most common sequelae of osteoporosis. Differential diagnosis between OVF and malignant vertebral fracture (MVF) is a challenge in clinical practice. Findings on computed tomography and magnetic resonance images (MRI) may help to differentiate between these two types of fracture.
View Article and Find Full Text PDFCTSD/CathD/CATD (cathepsin D) is a lysosomal aspartic protease. A distinguishing characteristic of CTSD is its dual functions of promoting cell proliferation via secreting a pro-enzyme outside the cells as a ligand, and promoting apoptosis via the mature form of this enzyme inside cells; however, the regulation of its secretion, expression, and maturation is undetermined. Using the lepidopteran insect , a serious agricultural pest, as a model, we revealed the dual functions and regulatory mechanisms of CTSD secretion, expression, and maturation.
View Article and Find Full Text PDFZhongguo Shi Yan Xue Ye Xue Za Zhi
December 2019
Objective: To explore the efficacy and safety of allogeneic hematopoietic stem cell transplantation (allo-HSCT) in the treatment of relapsed or refractory peripheral T-cell lymphoma(PTCL).
Methods: The clinical data of 6 patients with relapsed or refractory PTCL undergoing allo-HSCT from Sep. 2014 to Sep.
Holometabolous insects stop feeding at the final larval instar stage and then undergo metamorphosis; however, the mechanism is unclear. In the present study, using the serious lepidopteran agricultural pest Helicoverpa armigera as a model, we revealed that 20-hydroxyecdysone (20E) binds to the dopamine receptor (DopEcR), a G protein-coupled receptor, to stop larval feeding and promote pupation. DopEcR was expressed in various tissues and its level increased during metamorphic molting under 20E regulation.
View Article and Find Full Text PDFModulating the vitamin D receptor (VDR) is an effective way to treat for cancer. We previously reported a potent non-secosteroidal VDR modulator (sw-22) with modest anti-tumor activity, which could be due to its undesirable physicochemical and pharmacokinetic properties. In this study, we investigated the structure-activity and structure-property relationships around the 2'-hydroxyl group of sw-22 to improve the physicochemical properties, pharmacokinetic properties and anti-tumor activity.
View Article and Find Full Text PDFACS Nano
September 2018
Recently, wearable devices have been attracting significantly increased interest in human motion detection and human physiological signal monitoring. Currently, it is still a great challenge to fabricate strain sensors with high performance and good fit to the human body. In this work, we fabricated a close-fitting and wearable graphene textile strain sensor based on a graphene textile without polymer encapsulation.
View Article and Find Full Text PDFChronic pancreatitis (CP) is a serious disease that characterized by the progressive replacement of functional pancreas tissue by fibrotic tissue. Vitamin D receptor (VDR) plays a critical role in the development of CP, since it inhibits excessive deposition of extracellular matrix (ECM) in activated pancreatic stellate cells (PSCs). Herein, a novel series of non-secosteriodal VDR ligands were designed and synthesized, and their VDR affinity and anti-fibrosis activity were evaluated.
View Article and Find Full Text PDFZhongguo Shi Yan Xue Ye Xue Za Zhi
February 2018
Objective: To analyze the change of neutrophil/lymphocyte ratio (NLR) in patients with diffuse large B cell lymphoma (DLBCL) patients before and after CHOP or R-CHOP chemotherapy and its effect on survival of patients.
Methods: Clinical data of 60 patients with DLBCL were collected and were retrospectively analyzed. According to median NLR, 60 patients were divided into the group L in 33 cases (NLR< 2.
Biomed Pharmacother
November 2017
Acute myeloid leukemia (AML), characterized by extremely heterogeneous molecular and biologic abnormalities, is an aggressive hematologic malignancy, hampering the research and development of effective targeted treatment modalities. Sweroside (SWE), an iridoid glycoside, is isolated from Lonicera japonIca. It has diverse biological activities, but little is known in human leukemia.
View Article and Find Full Text PDFZhongguo Shi Yan Xue Ye Xue Za Zhi
February 2017
Objective: To explore the expression and clinical significance of B cell lymphocyte stimulating factor (BLyS) in B cell-derived malignant hematological diseases.
Methods: Fifty-seven cases of newly diagnosed B cell-derived hematologic malignancies were admitted and treated in our hospital from March 2015 to 2016 July. including 17 cases of multiple myeloma(MM) (A group) and 40 cases of B cell non-Hodgkin's lymphoma(B-NHL) (B group), 30 healthy volunteers were enrolled in control group(C group).
Animal steroid hormones regulate gene transcription through genomic pathways by binding to nuclear receptors. These steroid hormones also rapidly increase intracellular calcium and cyclic adenosine monophosphate (cAMP) levels and activate the protein kinase C (PKC) and protein kinase A (PKA) nongenomic pathways. However, the function and mechanism of the nongenomic pathways of the steroid hormones are unclear, and the relationship between the PKC and PKA pathways is also unclear.
View Article and Find Full Text PDFObjective: To study the chemical constituents in the seeds of Datura metel from Xinjiang Province.
Methods: The constituents were isolated and purified by silica gel, ODS and Sephadex LH-20 column chromatographic methods. Their chemical structures were analyzed and identified on the basis of physical and chemical properties and spectral data.
The cadherin epidermal growth factor (EGF) laminin G (LAG) seven-pass G-type receptors (CELSRs) are a special subgroup of adhesion G protein-coupled receptors, which are pivotal regulators of many biologic processes such as neuronal/endocrine cell differentiation, vessel valve formation, and the control of planar cell polarity during embryonic development. All three members of the CELSR family (CELSR1-3) have large ecto-domains that form homophilic interactions and encompass more than 2000 amino acids. Mutations in the ecto-domain or other gene locations of CELSRs are associated with neural tube defects and other diseases in humans.
View Article and Find Full Text PDFIt has been demonstrated that aberrant expression of microRNAs (miRNAs) is strongly associated with carcinogenesis. Recently, specific miRNAs may serve as potential biomarkers for the diagnosis and prognosis of various types of tumor. MiR-23a is known to play important role in the development of cancers and deregulated in various hematological malignancies.
View Article and Find Full Text PDFThe aim of this study was to investigate whether polymorphisms of - 938C/A and Thr43Ala in the BCL-2 gene and G - 248A in the BAX gene are associated with the risk of developing non-Hodgkin lymphoma (NHL). We genotyped polymorphisms of - 938C/A and Thr43Ala in the BCL-2 gene and G-248A in the BAX gene among 424 patients with NHL and 446 controls. We found that the - 938AA genotype of the BCL2 gene was significantly associated with the risk of developing NHL (p < 0.
View Article and Find Full Text PDFFrom the angle of sensitivity of the long period fiber grating (LPFG) resonant transmission spectrum, we demonstrate the sensitivity of LPFG resonance peak amplitude changing with transverse loads. The design of a resonant peak modulation-based LPFG rebar corrosion sensor is described by combining the spectral characteristics of LPFG with the expansion state monitoring of rebar corrosion. LPFG spectrum curves corresponding with different rebar corrosion status of the environment under test are captured by the monitoring technique of LPFG transmission spectra, and the relationship between the resonance peak amplitude change and the state of rebar corrosion is obtained, that is, the variation of LPFG resonance peak amplitude increases with the intensifying of the degree of rebar corrosion.
View Article and Find Full Text PDFActa Crystallogr Sect E Struct Rep Online
November 2012
In the title compound, C(10)H(10)N(4)O, the dihedral angle between the pyridine ring and the -C=O(CH(2))CN group is 24.08 (12)°. In the crystal, inversion dimers linked by pairs of N-H⋯N hydrogen bonds generate R(2) (2)(8) loops.
View Article and Find Full Text PDFObjective: To evaluate the efficacy and adverse effect of valproic acid (VPA) in combination with low dose chemotherapy on intermediate and high-risk myelodysplastic syndrome.
Methods: A total of 41 patients with intermediate (34) and high-risk (7) myelodysplastic syndrome were retrospectively analyzed. Among them, 19 patients received low dose chemotherapy regimen and 22 received low dose chemotherapy plus VPA.
Zhongguo Shi Yan Xue Ye Xue Za Zhi
February 2009
The aim of this study was to explore the effect of recombinant human interleukin 11 (rhIL-11) on platelet recovery after peripheral blood hematopoietic stem cell transplantation and its side-effects. 20 patients with hematologic malignancies treated by allogeneic peripheral blood stem cell transplantation (PBSCT) were randomly divided into test and control groups. The patients in test group were treated with rhIL-11 since the day 6 after PBSCT, while the patients in control group were given supporting treatment.
View Article and Find Full Text PDFChin Med J (Engl)
March 2007
Background: Both p16(INK4) and p21(Waf1) are tumor suppressors with similar biological functions in the regulation of cellular senescence. Previous reports showed that p16(INK4) could be activated by p21(Waf1) through transcriptional factor Sp1 in HeLa cells. This study was undertaken to determine the effects of p16(INK4) on the expression and functions of p21(Waf1).
View Article and Find Full Text PDF