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1.
J Clin Ultrasound ; 52(3): 315-317, 2024.
Article in English | MEDLINE | ID: mdl-38009956

ABSTRACT

Although the clinical manifestations of membranous supravalvular aortic stenosis (SVAS) are distinctive, its diagnosis remains challenging. Failure to initiate surgical treatment in a timely manner greatly increases the risk of sudden cardiac death. We report a case of membranous SVAS, detailing the clinical presentation and imaging manifestations.


Subject(s)
Aortic Stenosis, Supravalvular , Aortic Valve Insufficiency , Aortic Valve Stenosis , Humans , Aortic Stenosis, Supravalvular/complications , Aortic Stenosis, Supravalvular/diagnostic imaging , Aortic Stenosis, Supravalvular/surgery , Aortic Valve Insufficiency/complications , Aortic Valve Insufficiency/diagnostic imaging , Aortic Valve Insufficiency/surgery
2.
J Clin Ultrasound ; 51(8): 1364-1365, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37817347

ABSTRACT

Morning glory syndrome (MGS) and persistent hyperplastic primary vitreous (PHPV) are congenital abnormity, which may be related to the increased incidence of systemic abnormalities and retinal detachment,diagnosed by ultrasound, identified by CT, MRI, and with the confirmation of fundus examination.


Subject(s)
Optic Disk , Persistent Hyperplastic Primary Vitreous , Humans , Persistent Hyperplastic Primary Vitreous/diagnostic imaging , Optic Disk/abnormalities , Optic Disk/diagnostic imaging , Ultrasonography , Syndrome , Multimodal Imaging
3.
Zhongguo Shi Yan Xue Ye Xue Za Zhi ; 31(3): 843-849, 2023 Jun.
Article in Chinese | MEDLINE | ID: mdl-37356949

ABSTRACT

OBJECTIVE: To analyze the RHD genotype of a blood donor with Del phenotype in Yunnan. METHODS: Rh serological phenotype was identified. RHD gene was detected by PCR-SSP typing, and its 10 exons were sequenced. Exon 9 was amplified for sequencing and analysis. RHD zygosity was detected. RESULTS: The Rh phenotype of this specimen was CcDelee. Genomic DNA exhibited a 1 003 bp deletion spanning from intron 8, across exon 9 into intron 9. The deletion breakpoints occurred between two 7-bp short tandem repeat sequences. There was no variation in the sequences of the remaining exons. The Rh hybridization box test showed that there was one RHD negative allele. CONCLUSION: This specimen is Del type caused by deletion of RHD exon 9.


Subject(s)
Blood Donors , Rh-Hr Blood-Group System , Humans , Rh-Hr Blood-Group System/genetics , China , Phenotype , Exons , Genotype , Alleles
4.
J Clin Ultrasound ; 51(6): 1067-1069, 2023.
Article in English | MEDLINE | ID: mdl-37130036

ABSTRACT

The giant prostatic utricle cyst, located behindthe bladder with removable irregular mixed echo, communicating with the urethraat the level of the seminal colliculus, was diagnosed by ultrasound andverified by pathology and surgery.


Subject(s)
Cysts , Prostatic Diseases , Male , Humans , Prostatic Diseases/diagnostic imaging , Prostatic Diseases/pathology , Prostate/diagnostic imaging , Pelvis/pathology , Urinary Bladder , Cysts/diagnostic imaging , Cysts/surgery
5.
Insect Sci ; 30(1): 2-14, 2023 Feb.
Article in English | MEDLINE | ID: mdl-35275442

ABSTRACT

The unscientific application of synthetic pesticides has brought various negative effects on the environment, hindering the sustainable development of agriculture. Nanoparticles can be applied as carriers to improve pesticide delivery, showing great potential in the development of pesticide formulation in recent years. Herein, a star polymer (SPc) was constructed as an efficient pesticide nanocarrier/adjuvant that could spontaneously assemble with thiocyclam or monosultap into a complex, through hydrophobic association and hydrogen bonding, respectively, with the pesticide-loading contents of 42.54% and 19.3%. This complexation reduced the particle sizes of thiocyclam from 543.54 to 52.74 nm for pure thiocyclam, and 3 814.16 to 1 185.89 nm for commercial preparation (cp) of thiocyclam. Interestingly, the introduction of SPc decreased the contact angles of both pure and cp thiocyclam on plant leaves, and increased the plant uptake of cp thiocyclam to 2.4-1.9 times of that without SPc. Meanwhile, the SPc could promote the bioactivity of pure/cp thiocyclam against green peach aphids through leaf dipping method and root application. For leaf dipping method, the 50% lethal concentration decreased from 0.532 to 0.221 g/L after the complexation of pure thiocyclam with SPc, and that decreased from 0.390 to 0.251 g/L for cp thiocyclam. SPc seems a promising adjuvant for nanometerization of both pure and cp insecticides, which is beneficial for improving the delivery efficiency and utilization rate of pesticides.


Subject(s)
Aphids , Insecticides , Pesticides , Animals , Heterocyclic Compounds, 1-Ring , Pesticides/chemistry
6.
World J Surg Oncol ; 19(1): 312, 2021 Oct 23.
Article in English | MEDLINE | ID: mdl-34686196

ABSTRACT

BACKGROUND: The present study aims to investigate the preliminary mechanism underlying the peritoneal metastasis of gastric cancer cells. METHODS: Exosomes from GC9811 cells (Con-Exo) and from GC9811-P cells (PM-Exo) were extracted by ultracentrifugation, which were identified with transmission electron microscopy (TEM) and nanoparticle trafficking analysis, as well as the expression of CD9, CD63, and CD81 detected by Western blot assay. α-SMA expression was determined by immunofluorescence assay and Western blot assay. The levels of Snail1, E-cadherin, and Actin-related protein 3 (ACTR3) were evaluated by Western blot assay. MiRNA array was performed on exosomes to screen the differentially expressed miRNAs. The expressions of miRNAs, SMAD2, CDK4, and ACTR3 were determined by QRT-PCR. The delivery of miR-486-5p was confirmed by laser confocal detection. RESULTS: Firstly, TEM, nanoparticle trafficking analysis, and Western blot assays were used to confirm the successful extraction of Con-Exo and PM-Exo. The incubation of Con-Exo and PM-Exo could decrease E-cadherin expression and increase of α-SMA respectively in HMrSV5 cells, with the increased proportion of fusiform cells. More significant changes were observed in PM-Exo-treated HMrSV5 cells. Secondary, compared to Con-Exo, miR-486-5p and miR-132-3p were found downregulated, and miR-132-5p was found upregulated in PM-Exo. The transfection of miR-486-5p and miR-132-3p was observed to suppress EMT, and the transfection of miR-132-3p was observed to induce EMT. Laser confocal detection confirmed the delivery of miR-486-5p from gastric cancer cells to HMrSV5 cells through exosomes. Lastly, the expression of Mothers against decapentaplegic homolog 2 (SMAD2), cyclin-dependent kinase 4 (CDK4), and ACTR3 was found to be downregulated via miR-486-5p. CONCLUSION: Decreased delivery of miR-486-5p via exosomes might be responsible for the peritoneal metastasis of gastric cancer cells by promoting epithelial-mesenchymal transition progress.


Subject(s)
Exosomes , MicroRNAs , Peritoneal Neoplasms , Stomach Neoplasms , Humans , MicroRNAs/genetics , Prognosis , Stomach Neoplasms/genetics
7.
Micron ; 150: 103143, 2021 Nov.
Article in English | MEDLINE | ID: mdl-34517293

ABSTRACT

In order to explore the mechanism underlying chemosensation in Eocanthecona furcellata, the external morphology of its antennae and the type, quantity, distribution and ultrastructure of the sensilla were observed on both sexes of adults and 5th-instar nymphs using scanning electron microscopy. The results showed that the antennae of E. furcellata consisted of three parts: scape, pedicel and flagellum. There were five types of sensilla on the antennae, which included sensilla trichoidea (ST), sensilla chaetica (SCh), sensilla coeloconica (SCo), sensilla basiconica (SB) and squamifornia denticles (SD). Further, there were 4 subtypes of ST and SB and 2 subtypes of SCo and SCh. The number of sensilla on nymphs was significantly lower than that on adults. The antennae of adults showed sexual dimorphism, as the number of sensilla on female adults was higher than that on male adults. SB4 was found only on females and SCo2 was found only on males. These inter-sexual differences may be related to chemoreception of sex pheromone and chemical predation location. The morphology and putative functions of each sensilla were compared and discussed. These results provide a reference for further study of the behavioral biology, chemical ecology and electrophysiology of insects, and also provides a scientific basis for new ways of biological control.


Subject(s)
Heteroptera , Sensilla , Animals , Arthropod Antennae , Female , Male , Microscopy, Electron, Scanning , Sex Characteristics
8.
Parkinsonism Relat Disord ; 90: 15-20, 2021 09.
Article in English | MEDLINE | ID: mdl-34340003

ABSTRACT

BACKGROUND: Cervical dystonia (CD) is the most common form of focal dystonia with involuntary movements and postures of the head. The pathogenesis and neural mechanisms underlying CD have not been fully elucidated. METHODS: Twenty-seven newly drug-naïve patients with CD and 21 healthy controls (HCs) were recruited with clinical assessment and resting-state functional magnetic resonance imaging (rs-fMRI) scanning. Severity of CD was measured by Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) and Tsui scores. Whole-brain voxel-wise intrinsic connectivity (IC) and seed-based functional connectivity (FC) analyses were performed for detection of changes in the CD group relative to HCs, controlling for age, gender, and global time series correlation, followed by correlation analyses of IC, seed-based FC and clinically relevant features, respectively. RESULTS: In comparison with HCs, CD patients showed significantly increased IC measurement in the anterior part of the left supramarginal gyrus and extended to the inferior left postcentral gyrus (AL-SMG/IL-PCG). With this cluster as a seed, decreased FC was found in the right precentral and postcentral gyrus. Moreover, the regional IC value in the AL-SMG/IL-PCG was significantly positively correlated with TWSTRS-1 (severity) score, and significantly negatively correlated with the associated seed-based FC strength. CONCLUSIONS: Our results showed signs of both hyper- and hypo-connectivity in bilateral regions of the sensorimotor network related to CD. The imbalance of functional connectivity (both hyper- and hypo-) may hint both overloading and disrupted somatosensory or sensorimotor integration dysfunction within the sensorimotor network underlying the pathophysiology of CD, thus providing a network target for future therapies.


Subject(s)
Magnetic Resonance Imaging , Nerve Net/physiopathology , Psychomotor Disorders/physiopathology , Torticollis/physiopathology , Adult , Case-Control Studies , Correlation of Data , Female , Humans , Male , Middle Aged , Psychomotor Disorders/diagnostic imaging , Psychomotor Disorders/etiology , Sensorimotor Cortex/diagnostic imaging , Sensorimotor Cortex/physiopathology , Severity of Illness Index , Somatosensory Cortex/diagnostic imaging , Somatosensory Cortex/physiopathology , Torticollis/complications , Torticollis/diagnostic imaging
9.
Front Genet ; 11: 554502, 2020.
Article in English | MEDLINE | ID: mdl-33193628

ABSTRACT

BACKGROUND: Pancreatic ductal adenocarcinoma (PDAC) is the most aggressive form of pancreatic cancer. Its 5-year survival rate is only 3-5%. Perineural invasion (PNI) is a process of cancer cells invading the surrounding nerves and perineural spaces. It is considered to be associated with the poor prognosis of PDAC. About 90% of pancreatic cancer patients have PNI. The high incidence of PNI in pancreatic cancer limits radical resection and promotes local recurrence, which negatively affects life quality and survival time of the patients with pancreatic cancer. OBJECTIVES: To investigate the mechanism of PNI in pancreatic cancer, we analyzed the gene expression profiles of tumors and adjacent tissues from 50 PDAC patients which included 28 patients with perineural invasion and 22 patients without perineural invasion. METHOD: Using Monte-Carlo feature selection and Incremental Feature Selection (IFS) method, we identified 26 key features within which 15 features were from tumor tissues and 11 features were from adjacent tissues. RESULTS: Our results suggested that not only the tumor tissue, but also the adjacent tissue, was informative for perineural invasion prediction. The SVM classifier based on these 26 key features can predict perineural invasion accurately, with a high accuracy of 0.94 evaluated with leave-one-out cross validation (LOOCV). CONCLUSION: The in-depth biological analysis of key feature genes, such as TNFRSF14, XPO1, and ATF3, shed light on the understanding of perineural invasion in pancreatic ductal adenocarcinoma.

10.
Biochim Biophys Acta Mol Basis Dis ; 1866(6): 165747, 2020 06 01.
Article in English | MEDLINE | ID: mdl-32109492

ABSTRACT

OBJECTIVE: Pancreatic carcinoma (PANC) is one of the important aggressive cancers, with deficiency in effective therapeutics. The study aimed to investigate the effects and molecular mechanism of miR-139-5p/SLC7A11 on the proliferation and metastasis of PANC. METHODS: Bioinformatics was used to analyze the differentially expressed genes in the TCGA database. PANC cell lines with overexpressed miR-139-5p and Solute Carrier Family 7, Member 11 (SLC7A11) was established, and have been used to detect cell proliferation, invasion and metastasis of PANC Subsequently, bioinformatic analysis and dual luciferase reporter assay were performed to confirm that SLC7A11 was a target gene of miR-139-5p. Xenograft mice model was used to explore the functions of miR-139-5p in PANC tumorigenicity. RESULTS: MiR-139-5p could regulate and affect the protein expression of P13K and Akt associated with phosphatidylinositol signaling pathway by inhibiting SLC7A11. MiR-139-5p was found to be lowly expressed in PANC tissues, while SLC7A11 was highly expressed. Low expression of miR-139-5p and high expression of SLC7A11 were positively associated with poor clinical outcomes. PANC cell proliferation, invasion and metastasis could be inhibited by miR-139-5p overexpression and be promoted by SLC7A11 overexpression. MiR-139-5p overexpression could suppress PANC tumor growth and the expressions of SLC7A11, p-PI3K, p-Akt in tumor tissues. Therefore, the inhibitory of miR-139-5p to PANC cell proliferation, invasion and metastasis was partly due to its inhibiting effect on SLC7A11 expression. CONCLUSION: Our study proves that miR-139-5p/SLC7A11 has important functions on PANC, suggesting that miR-139-5p can be used as a biomarker for PANC patients.


Subject(s)
Amino Acid Transport System y+/genetics , Carcinogenesis/genetics , MicroRNAs/genetics , Pancreatic Neoplasms/genetics , Animals , Cell Line, Tumor , Cell Movement/genetics , Cell Proliferation/genetics , Female , Gene Expression Regulation, Neoplastic/genetics , Heterografts , Humans , Male , Mice , Middle Aged , Neoplasm Invasiveness/genetics , Neoplasm Invasiveness/pathology , Neoplasm Metastasis , Oncogene Protein v-akt/genetics , Pancreatic Neoplasms/pathology , Phosphatidylinositol 3-Kinases/genetics , Signal Transduction/genetics , Pancreatic Neoplasms
11.
J Laparoendosc Adv Surg Tech A ; 29(12): 1571-1576, 2019 Dec.
Article in English | MEDLINE | ID: mdl-31682205

ABSTRACT

Objectives: To investigate the effect of autologous blood transfusion (ABT) and Pringle maneuver (PM) on postoperative early liver function and short-term postoperative results following laparoscopic liver resection in patients with benign hepatic neoplasms. Materials and Methods: We retrospectively analyzed the clinical data for 125 consecutive patients who underwent laparoscopic segmental hepatectomy from January 2015 to May 2018 (68 in the ABT group versus 57 in the PM group). We compared patients' characteristics and intra- and postoperative short-term outcomes between the groups. Results: The 2 groups were well matched regarding patients' clinical characteristics, types of liver resection, operative time, and histopathological findings (P > .05). Median blood loss was significantly lower in the PM group versus the ABT group (200 mL versus 750 mL, respectively; P < .01), and overall complication rates were similar (n = 12 [17%] versus n = 9 [16%], respectively; P > .05). The ABT group had significantly lower mean levels of total bilirubin, indirect bilirubin, aspartate transaminase, and alanine aminotransferase on postoperative days 1 and 3 (P < .05). The ABT group had a shorter hospital stay compared with the PM group (5.8 days versus 7.7 days, respectively; P < .05) and lower hospitalization costs (55,400 ± 15,400 versus 667,000 ± 21,600 CN dollars, respectively; P < .05). Conclusions: Compared with Pringle's maneuver, laparoscopic hepatectomy with ABT promoted early recovery of liver function and reduced hospitalization costs in select patients with benign hepatic neoplasms.


Subject(s)
Blood Transfusion, Autologous , Hepatectomy/methods , Laparoscopy/methods , Liver Neoplasms/surgery , Adult , Aged , Alanine Transaminase/blood , Aspartate Aminotransferases/blood , Bilirubin/blood , Blood Loss, Surgical/statistics & numerical data , Female , Humans , Length of Stay/statistics & numerical data , Male , Middle Aged , Operative Time , Postoperative Period , Retrospective Studies
12.
Int J Biol Macromol ; 117: 116-123, 2018 Oct 01.
Article in English | MEDLINE | ID: mdl-29802922

ABSTRACT

To gain insight into the effect of Cu2+ on the activity and structure of alkaline phosphatase (ALP) from Macrobrachium rosenbergii, the enzyme was purified using ammonium sulfate fractionation, Sephacryl S-200, and DEAE anion exchange chromatography. We studied Cu2+-mediated inhibition and aggregation of ALP, and found that Cu2+ significantly inactivated ALP activity with an IC50 of 1.47 ±â€¯0.02 mM. We further revealed that Cu2+ reversibly inhibited ALP in a mixed-type manner with Ki = 0.41 ±â€¯0.02 mM. Time-interval kinetics showed that the inhibition followed first-order reaction kinetics. This process was associated with conformational changes and significant transient free-energy change. Spectrofluorometry results showed that Cu2+ induced ALP tertiary structural changes, including the exposure of hydrophobic surfaces that directly induced ALP aggregation. The results provide new information regarding ALP from M. rosenbergii.


Subject(s)
Alkaline Phosphatase/chemistry , Alkaline Phosphatase/metabolism , Copper/chemistry , Ions/chemistry , Palaemonidae/enzymology , Alkaline Phosphatase/isolation & purification , Animals , Copper/pharmacology , Dose-Response Relationship, Drug , Enzyme Activation/drug effects , Enzyme Inhibitors/chemistry , Enzyme Inhibitors/pharmacology , Kinetics , Molecular Conformation/drug effects , Protein Aggregates
13.
Int J Biol Macromol ; 112: 667-674, 2018 Jun.
Article in English | MEDLINE | ID: mdl-29408614

ABSTRACT

Fucoidans are complex sulfated polysaccharides that have a wide range of biological activities. Previously, we reported the various effects of Fucus vesiculosus fucoidan on tyrosinase and B16 melanoma cells. In this study, to identify fucoidan-targeted proteins in B16 melanoma cells, we performed a proteomics study and integrated enzyme kinetics. We detected 19 candidate proteins dysregulated by fucoidan treatment. Among the probed proteins, the enzyme kinetics of two candidate enzymes, namely lactate dehydrogenase (LDH) as an upregulated protein and superoxide dismutase (SOD) as a downregulated enzyme, were determined. The enzyme kinetics results showed that Fucus vesiculosus fucoidan significantly inhibited LDH catalytic function while it did not affect SOD activity even at a high dose, while only slightly decreased activity (up to 10%) at a low dose. Based on our previous and present observations, fucoidan could inhibit B16 melanoma cells growth via regulating proteins/enzymes expression levels such as LDH and SOD known as cell survival biomarkers. Interestingly, both expression level and enzyme catalytic activity of LDH were regulated by fucoidan, which could directly induce the apoptotic effect on B16 melanoma cells along with SOD downregulation. This study highlights how combining proteomics with enzyme kinetics can yield valuable insights into fucoidan targets.


Subject(s)
Fucus/metabolism , Melanoma, Experimental/enzymology , Polysaccharides/pharmacology , Proteomics/methods , Animals , Electrophoresis, Gel, Two-Dimensional , Enzyme Assays , Kinetics , L-Lactate Dehydrogenase/metabolism , Melanoma, Experimental/metabolism , Melanoma, Experimental/pathology , Mice , Neoplasm Proteins/metabolism , Sargassum/chemistry , Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization , Superoxide Dismutase/metabolism
14.
J Neuroinflammation ; 14(1): 186, 2017 Sep 13.
Article in English | MEDLINE | ID: mdl-28903766

ABSTRACT

BACKGROUND: The NLRP3 inflammasome is a multiprotein complex that regulates the innate immune inflammatory response by activating caspase-1 and subsequent IL-1ß and IL-18. Fluoxetine has been shown to have the anti-inflammatory properties in many disease models. However, the effects and mechanisms of these effects of fluoxetine in early brain injury after subarachnoid hemorrhage (SAH) have not been defined. METHODS: The SAH model was induced by an endovascular perforation in adult male Sprague-Dawley (SD) rats weighing 300-320 g. N-Ac-Tyr-Val-Ala-Asp-chloromethyl ketone (AC-YVAD-CMK) was injected intraperitoneally (5 mg/kg) 1 h after SAH. Fluoxetine was administered via intravenous route 6 h after SAH. 3-Methyladenine (3-MA) was intracerebroventricularly injected 20 min before SAH. SAH grade, neurological function, brain water content, propidium iodide (PI) staining, western blot, double immunostaining, and transmission electron microscopy were performed. RESULTS: Expression of caspase-1 increased and peaked at 24 h after SAH. Caspase activation was along with the increased necrotic cells, which occurred mainly in neurons. Necrotic cell death of microglia and astrocyte were also found. Administration of AC-YVAD-CMK, a caspase-1 inhibitor, reduced the expression of IL-1ß and IL-18 and the number of PI-positive cells, attenuated brain edema, and improved neurological function, which was also observed in fluoxetine-treated rats. Furthermore, fluoxetine treatment significantly decreased the expression of NLRP3 and cleaved caspase-1 and upregulated the expression of beclin-1, a marker for autophagy. Finally, the effects of fluoxetine in NLRP3 inflammasome activation were reversed by additional 3-MA administration. CONCLUSIONS: Together, our present study indicated that NLRP3 inflammasome and caspase-1 activation play a deleterious role in early brain injury and fluoxetine mitigates NLRP3 inflammasome and caspase-1 activation through autophagy activation after SAH, providing a potential therapeutic agent for SAH treatment.


Subject(s)
Anti-Inflammatory Agents/pharmacology , Autophagy/drug effects , Fluoxetine/pharmacology , Inflammasomes/metabolism , NLR Family, Pyrin Domain-Containing 3 Protein/immunology , Subarachnoid Hemorrhage/pathology , Animals , Brain Injuries/immunology , Brain Injuries/metabolism , Brain Injuries/pathology , Inflammasomes/drug effects , Inflammasomes/immunology , Male , NLR Family, Pyrin Domain-Containing 3 Protein/metabolism , Rats , Rats, Sprague-Dawley , Subarachnoid Hemorrhage/immunology , Subarachnoid Hemorrhage/metabolism
15.
Free Radic Biol Med ; 112: 336-349, 2017 11.
Article in English | MEDLINE | ID: mdl-28790012

ABSTRACT

Aberrant modulation of mitochondrial dynamic network, which shifts the balance of fusion and fission towards fission, is involved in brain damage of various neurodegenerative diseases including Parkinson's disease, Huntington's disease and Alzheimer's disease. A recent research has shown that the inhibition of mitochondrial fission alleviates early brain injury after experimental subarachnoid hemorrhage, however, the underlying molecular mechanisms have remained to be elucidated. This study was undertaken to characterize the effects of the inhibition of dynamin-related protein-1 (Drp1, a dominator of mitochondrial fission) on blood-brain barrier (BBB) disruption and neuronal apoptosis following SAH and the potential mechanisms. The endovascular perforation model of SAH was performed in adult male Sprague Dawley rats. The results indicated Mdivi-1(a selective Drp1 inhibitor) reversed the morphologic changes of mitochondria and Drp1 translocation, reduced ROS levels, ameliorated the BBB disruption and brain edema remarkably, decreased the expression of MMP-9 and prevented degradation of tight junction proteins-occludin, claudin-5 and ZO-1. Mdivi-1 administration also inhibited the nuclear translocation of nuclear factor-kappa B (NF-κB), leading to decreased expressions of TNF-ɑ, IL-6 and IL-1ß. Moreover, Mdivi-1 treatment attenuated neuronal cell death and improved neurological outcome. To investigate the underlying mechanisms further, we determined that Mdivi-1 reduced p-PERK, p-eIF2α, CHOP, cleaved caspase-3 and Bax expression as well as increased Bcl-2 expression. Rotenone (a selective inhibitor of mitochondrial complexes I) abolished both the anti-BBB disruption and anti-apoptosis effects of Mdivi-1. In conclusion, these data implied that excessive mitochondrial fission might inhibit mitochondrial complex I to become a cause of oxidative stress in SAH, and the inhibition of Drp1 by Mdivi-1 attenuated early brain injury after SAH probably via the suppression of inflammation-related blood-brain barrier disruption and endoplasmic reticulum stress-based apoptosis.


Subject(s)
Blood-Brain Barrier/drug effects , Dynamins/genetics , Mitochondria/drug effects , Mitochondrial Dynamics/drug effects , Quinazolinones/pharmacology , Subarachnoid Hemorrhage/drug therapy , Animals , Apoptosis/drug effects , Blood-Brain Barrier/metabolism , Claudin-5/genetics , Claudin-5/metabolism , Dynamins/antagonists & inhibitors , Dynamins/metabolism , Endoplasmic Reticulum Stress/drug effects , Interleukin-1beta/antagonists & inhibitors , Interleukin-1beta/genetics , Interleukin-1beta/metabolism , Interleukin-6/antagonists & inhibitors , Interleukin-6/genetics , Interleukin-6/metabolism , Male , Matrix Metalloproteinase 9/genetics , Matrix Metalloproteinase 9/metabolism , Mitochondria/genetics , Mitochondria/metabolism , Mitochondrial Dynamics/genetics , NF-kappa B/antagonists & inhibitors , NF-kappa B/genetics , NF-kappa B/metabolism , Occludin/genetics , Occludin/metabolism , Proto-Oncogene Proteins c-bcl-2/agonists , Proto-Oncogene Proteins c-bcl-2/genetics , Proto-Oncogene Proteins c-bcl-2/metabolism , Rats , Rats, Sprague-Dawley , Reactive Oxygen Species/antagonists & inhibitors , Reactive Oxygen Species/metabolism , Subarachnoid Hemorrhage/genetics , Subarachnoid Hemorrhage/mortality , Subarachnoid Hemorrhage/pathology , Subarachnoid Space/drug effects , Subarachnoid Space/metabolism , Subarachnoid Space/pathology , Survival Analysis , Tumor Necrosis Factor-alpha/antagonists & inhibitors , Tumor Necrosis Factor-alpha/genetics , Tumor Necrosis Factor-alpha/metabolism , Zonula Occludens-1 Protein/genetics , Zonula Occludens-1 Protein/metabolism , bcl-2-Associated X Protein/antagonists & inhibitors , bcl-2-Associated X Protein/genetics , bcl-2-Associated X Protein/metabolism
16.
J Geriatr Cardiol ; 14(4): 245-253, 2017 Apr.
Article in English | MEDLINE | ID: mdl-28663762

ABSTRACT

BACKGROUND: Transradial coronary procedure (TRP) traumatizes the radial artery (RA), especially resulting in changes to arterial wall morphology. This study explored the significance of the early onset of traumatic effects to wall layers of the RA following the first TRP (FTRP) and repeat TRP (RTRP) using very-high-frequency ultrabiomicroscopy (VHFUBM). METHODS: A total of 1431 patients that received TRP were divided into the FTRP group that comprised 781 patients and the RTRP group that comprised 650 patients depending on the number of procedures. Two-dimensional RA images were acquired by 30-55 MHz ultrasound one day before and one day after the procedure. RESULTS: After TRP, the incidence of intimal tears, medial dissections and external elastic lamina fracture were greater in the RTRP (P < 0.001). The RTRP group showed significantly thicker intimal thickness (IT), media thickness (MT), adventitia thickness and all complex layer thicknesses as compared with the FTRP group (P < 0.001). CONCLUSIONS: Multivariate linear regression analysis discovered that repeated TRP and other observations were independent predictors of increased IT in post-operative RA. VHFUBM provides an approach to study structural and histopathological injury in the wall layers of RA which showed increased trauma to the RA following RTRP.

17.
Afr J Tradit Complement Altern Med ; 14(4): 149-155, 2017.
Article in English | MEDLINE | ID: mdl-28638878

ABSTRACT

BACKGROUND: Fucoidan is a complex sulfated polysaccharide extracted from brown seaweed and has a wide variety of biological activities. It not only inhibits cancer cell growth but also inhibits tyrosinase in vitro. Therefore, it is of interest to investigate the effect of fucoidan on B16 murine melanoma cells as the findings may provide new insights into the underlying mechanism regarding the inhibition of melanin formation by fucoidan. In the present study, we aimed to investigate the anti-melanogenic effect of fucoidan and its inhibitory effect on B16 cells. MATERIALS AND METHODS: The influence of fucoidan on B16 melanoma cells and cellular tyrosinase was examined. Cell viability was examined by the cell counting kit-8 assay. Cellular tyrosinase activity and melanin content were determined using spectrophotometric methods and protein expression was analyzed by immunoblotting. Morphological changes in B16 melanoma cells were examined by phase contrast microscopy and apoptosis was analyzed by flow cytometry. RESULTS: In vitro studies were performed using cell viability analysis and showed that fucoidan significantly decreased viable cell number in a dose-response manner with an IC50 of 550 ±4.3 µg/mL. Cell morphology was altered and significant apoptosis was induced when cells were exposed to 550 µg/mL fucoidan for 48 h. CONCLUSION: This study provides substantial evidence to show that fucoidan inhibits B16 melanoma cell proliferation and cellular tyrosinase activity. Fucoidan may be useful in the treatment of hyperpigmentation and as a skin-whitening agent in the cosmetics industry.


Subject(s)
Apoptosis/drug effects , Melanins/metabolism , Melanoma, Experimental/drug therapy , Polysaccharides/pharmacology , Animals , Cell Proliferation/drug effects , Cell Survival/drug effects , Humans , Melanoma, Experimental/metabolism , Melanoma, Experimental/physiopathology , Mice
18.
Mar Drugs ; 15(4)2017 Mar 29.
Article in English | MEDLINE | ID: mdl-28353631

ABSTRACT

Substances with valuable antitumor properties have been identified in many marine algae, including an edible polysaccharide from the marine alga Gracilariopsis lemaneiformis (PGL). We previously reported transcriptome profiling data showing that PGL induced transcriptional alterations generate anti-lung cancer activity. To identify how PGL is detrimental to tumors, we purified PGL to characterize its chemical composition, molecular weight, and sugar and protein content and investigated its antitumor activity. We demonstrated that PGL exerted its antitumor activities by modulating cell viability, morphology, apoptosis, and the apoptosis-related Fas/FasL signaling pathway in the human lung cancer cell line A549, the gastric cancer cell line MKN28, and the mouse melanoma cell line B16. Our data provide the first evidence that PGL inhibits cell proliferation by inducing apoptosis, which is largely mediated by Fas/FasL in cancer cells, suggesting that PGL might be a novel therapeutic agent against cancer.


Subject(s)
Antineoplastic Agents/pharmacology , Polysaccharides/pharmacology , Rhodophyta/chemistry , A549 Cells , Animals , Apoptosis/drug effects , Cell Line, Tumor , Cell Proliferation/drug effects , Cell Survival/drug effects , Fas Ligand Protein/metabolism , Humans , Lung Neoplasms/drug therapy , Lung Neoplasms/metabolism , Melanoma, Experimental/drug therapy , Melanoma, Experimental/metabolism , Mice , Signal Transduction/drug effects
19.
CNS Neurosci Ther ; 21(10): 855-66, 2015 Oct.
Article in English | MEDLINE | ID: mdl-26387576

ABSTRACT

AIMS: Postural instability/gait difficulty (PIGD) and tremor-dominant (TD) subtypes of Parkinson's disease (PD) show different clinical manifestations; however, their underlying neural substrates remain incompletely understood. This study aimed at investigating the subtype-specific patterns of spontaneous brain activity in PD. METHODS: Thirty-one patients with PD (12 TD/19 PIGD) and 22 healthy gender- and age-matched controls were recruited. Resting-state functional magnetic resonance imaging data were collected, and amplitude of low-frequency fluctuations (ALFF) was measured. Voxelwise one-way analysis of covariance and post hoc analyses of ALFF were performed among the three groups, with age and gender as covariates (levodopa daily dosage and gray matter volume as additional covariates for validation analysis). Correlations of clinical variables (e.g., disease duration and PIGD/tremor subscale score) with ALFF values were examined. RESULTS: Compared with controls, patients with TD exhibited higher ALFF in the right cerebellar posterior lobe and patients with PIGD exhibited lower ALFF in the bilateral putamen and cerebellar posterior lobe, and higher values primarily in several cortical areas including the inferior and superior temporal gyrus, superior frontal, and parietal gyrus. Compared with patients with PIGD, patients with TD had higher ALFF in the bilateral putamen and the cerebellar posterior lobe, as well as lower ALFF in the bilateral temporal gyrus and the left superior parietal lobule. In all patients, ALFF in the bilateral cerebellar posterior lobe positively correlated with tremor score and ALFF in the bilateral putamen negatively correlated with PIGD score. CONCLUSION: Different patterns of spontaneous neural activity in the cerebellum and putamen may underlie the neural substrate of PD motor subtypes.


Subject(s)
Brain/physiopathology , Gait Disorders, Neurologic/physiopathology , Parkinson Disease/physiopathology , Tremor/physiopathology , Adult , Aged , Antiparkinson Agents/therapeutic use , Brain/drug effects , Brain/pathology , Brain Mapping , Female , Gait Disorders, Neurologic/drug therapy , Gait Disorders, Neurologic/pathology , Gray Matter/drug effects , Gray Matter/pathology , Gray Matter/physiopathology , Humans , Levodopa/therapeutic use , Magnetic Resonance Imaging/methods , Male , Middle Aged , Neural Pathways/drug effects , Neural Pathways/pathology , Neural Pathways/physiopathology , Organ Size , Parkinson Disease/drug therapy , Parkinson Disease/pathology , Rest , Tremor/drug therapy , Tremor/pathology
20.
Food Chem ; 186: 256-64, 2015 Nov 01.
Article in English | MEDLINE | ID: mdl-25976819

ABSTRACT

Soy germ rich in isoflavones has attracted much attention for health-promoting characteristics. An effective approach via Monascus aged vinegar soaking was adopted to enhance the aglycone amount. The profiles and interconversion of soy germ isoflavones via Monascus aged vinegar soaking were investigated, and the distribution in vinegars were also explored. The aglycones were dramatically increased by 40.76 times. Concomitantly, ß-glycosides and malonylglycosides were significantly decreased. The proportion of aglycones presented a sharp increase with the endogenous ß-glucosidase activity at the initial 4h incubation. There appeared to be correlations between ß-glucosidase activity and the hydrolysis of conjugated isoflavones. The results demonstrated that the reactions of decarboxylation, de-esterification and de-glycosylation were involved in the Monascus aged vinegar soaking, supporting synergistic effects of enzymolysis by endogenous ß-glucosidase from soy germ and acid hydrolysis of vinegars. Soaking by vinegar is a promising pathway for preparing aglycone-rich soy germ.


Subject(s)
Acetic Acid/pharmacology , Glycine max , Isoflavones/analysis , Seeds/drug effects , Seeds/metabolism , Food Handling/methods , Glycosides/analysis , Glycosylation , Humans , Hydrolysis , Monascus/metabolism , Soybean Proteins/metabolism , beta-Glucosidase/metabolism
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