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Journal of Biomedical Research

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https://www.readbyqxmd.com/read/29752428/angiopoietin-like-protein-3-angptl3-deficiency-and-familial-combined-hypolipidemia
#1
Tarugi Patrizia, Bertolini Stefano, Calandra Sebastiano
Three members of the angiopoietin-like (ANGPTL) protein family-ANGPTL3, ANGPTL4 and ANGPTL8- are important regulators of plasma lipoproteins. They inhibit the enzyme lipoprotein lipase, which plays a key role in the intravascular lipolysis of triglycerides present in some lipoprotein classes. This review focuses on the role of ANGPTL3 as emerged from the study of genetic variants of Angptl3 gene in mice and humans. Both loss of function genetic variants and inactivation of Angptl3 gene in mice are associated with a marked reduction of plasma levels of triglyceride and cholesterol and an increased activity of lipoprotein lipase and endothelial lipase...
April 12, 2018: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29353820/cervical-spine-fractures-in-osteopetrosis-a-case-report-and-review-of-the-literature
#2
Arjang Ahmadpour, Amir Goodarzi, Darrin J Lee, Ripul R Panchal, Kee D Kim
While management of appendicular fractures has been well described in the setting of osteopetrosis, there is limited information on managing fractures of the axial spine. Here we present an osteopetrotic patient with multiple traumatic multiple, comminuted, unstable cervical spinal fractures managed with non-operative stabilization, and provide a review of the pathophysiology, genetic characteristics, and special considerations that must be explored when determining operative versus non-operative management of spinal injury in osteopetrosis...
January 18, 2018: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29353819/interference-with-the-c-terminal-structure-of-marf1-causes-defective-oocyte-meiotic-division-and-female-infertility-in-mice
#3
Guang-Yi Cao, Ming-Zhe Li, Hao Wang, Lan-Ying Shi, You-Qiang Su
Meiosis-arrest female 1 (MARF1) is a recently identified key oogenic regulator essential for the maintenance of female fertility and genome integrity in mice. However, the detailed functions and the underlying mechanisms of MARF1 remain elusive. Here, in an attempt to create a mouse model expressing fluorescent protein-tagged MARF1 to facilitate further exploration of the roles of MARF1 in oocytes, we produced a Marf1-eGFP knockin (KI) mouse line in which the C-terminal structure and function of MARF1 were interfered by its fusing eGFP peptide...
January 18, 2018: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29353818/safety-of-axitinib-and-sorafenib-monotherapy-for-patients-with-renal-cell-carcinoma-a-meta-analysis
#4
Fei Qin, Hao Yu, Chang-Rong Xu, Hui-Hui Chen, Jian-Ling Bai
We sought to investigate safety of axitinib or sorafenib in renal cell carcinoma (RCC) patients and compare toxicity of these two vascular endothelial growth factor receptor inhibitors. Databases of PubMed and Embase were searched. We included phase II and III prospective trials, as well as retrospective studies, in which patients diagnosed with RCC were treated with axitinib or sorafenib monotherapy at a starting dose of 5 mg and 400 mg twice daily, respectively. The overall incidence of high grade hypertension, fatigue, gastrointestinal toxicity and hand-foot syndrome, along with their 95% confidence intervals (CI), were calculated using fixed- or random- effects model according to heterogeneity test results...
January 18, 2018: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29353817/transforming-growth-factor-%C3%AE-signaling-in-systemic-sclerosis
#5
Nolan B Ayers, Chen-Ming Sun, Shi-You Chen
Systemic sclerosis (SSc) is a complex, multiorgan autoimmune disease of unknown etiology. Manifestation of the disease results from an interaction of three key pathologic features including irregularities of the antigen-specific immune system and the non-specific immune system, resulting in autoantibody production, vascular endothelial activation of small blood vessels, and tissue fibrosis as a result of fibroblast dysfunction. Given the heterogeneity of clinical presentation of the disease, a lack of universal models has impeded adequate testing of potential therapies for SSc...
January 18, 2018: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29353816/human-parvovirus-b19-associated-hematopathy-in-hiv-disease-need-for-clinicopathological-revisit
#6
Nasir Idris Abdullahi, Medugu Jessy Thomas, Amos Dangana
No abstract text is available yet for this article.
January 18, 2018: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29109330/vanishing-cerebral-vasculitis-in-a-patient-with-lewy-pathology
#7
Natalia Liapounova, Kamran H Azar, J Max Findlay, Jian-Qiang Lu
Immune-mediated mechanisms are involved in the pathogenesis of both cerebral vasculitis and Parkinson's disease (PD, brainstem-predominant Lewy pathology), but the presentation of cerebral vasculitis with comorbid Lewy pathology has not yet been reported. Here we present a case of pathologically confirmed vasculitis in a 73-year-old male patient whose postmortem examination revealed Lewy pathology diagnostic of PD. This case study suggests a comorbidity of cerebral vasculitis and Lewy pathology, as well as potential pathogenic interactions between these two disorders with immune-mediated mechanisms...
November 7, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29109328/semi-automated-carotid-lumen-segmentation-in-computed-tomography-angiography-images
#8
Hamid Reza Hemmati, Mahdi Alizadeh, Alireza Kamali-Asl, Shapour Shirani
Carotid artery stenosis causes narrowing of carotid lumens and may lead to brain infarction. The purpose of this study was to develop a semi-automated method of segmenting vessel walls, surrounding tissues, and more importantly, the carotid artery lumen by contrast computed tomography angiography (CTA) images and to define the severity of stenosis and present a three-dimensional model of the carotid for visual inspection. In vivo contrast CTA images of 14 patients (7 normal subjects and 7 patients undergoing endarterectomy) were analyzed using a multi-step segmentation algorithm...
November 5, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29109329/role-of-apolipoproteins-abca1-and-lcat-in-the-biogenesis-of-normal-and-aberrant-high-density-lipoproteins
#9
Vassilis I Zannis, Shi Su, Panagiotis Fotakis
In this review, we focus on the pathway of biogenesis of HDL, the essential role of apoA-I, ATP binding cassette transporter A1 (ABCA1), and lecithin: cholesterol acyltransferase (LCAT) in the formation of plasma HDL; the generation of aberrant forms of HDL containing mutant apoA-I forms and the role of apoA-IV and apoE in the formation of distinct HDL subpopulations. The biogenesis of HDL requires functional interactions of the ABCA1 with apoA-I (and to a lesser extent with apoE and apoA-IV) and subsequent interactions of the nascent HDL species thus formed with LCAT...
November 4, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29770779/effect-of-neoadjuvant-chemotherapy-on-the-expression-of-hormone-receptors-and-ki-67-in-chinese-breast-cancer-patients-a-retrospective-study-of-525-patients
#10
Yu-Tuan Wu, Xin Li, Lin-Jie Lu, Lu Gan, Wei Dai, Yan-Ling Shi, Vishnu Prasad Adhikari, Kai-Nan Wu, Ling-Quan Kong
This study was designed to investigate the effect of neoadjuvant chemotherapy on the expression of hormone receptors and ki67 in Chinese female breast cancer patients. The expression of estrogen receptor (ER), progesterone receptor (PR) and Ki67 among 525 neoadjuvant chemotherapy cases was studied by immunohistochemistry (IHC). Differences between specimens made through preoperative core needle biopsy (CB) and excised tissue biopsy (EB) were observed. The positive rates of ER, PR and Ki67 in CB and EB were 65...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29770778/apolipoprotein-e-in-diet-induced-obesity-a-paradigm-shift-from-conventional-perception
#11
Kyriakos E Kypreos, Eleni A Karavia, Caterina Constantinou, Aikaterini Hatziri, Christina Kalogeropoulou, Eva Xepapadaki, Evangelia Zvintzou
Apolipoprotein E (APOE) is a major protein component of peripheral and brain lipoprotein transport systems. APOE in peripheral circulation does not cross blood brain barrier or blood cerebrospinal fluid barrier. As a result, peripheral APOE expression does not affect brain APOE levels and vice versa. Numerous epidemiological studies suggest a key role of peripherally expressed APOE in the development and progression of coronary heart disease while brain APOE has been associated with dementia and Alzheimer's disease...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29760297/follicular-hyperandrogenism-and-insulin-resistance-in-polycystic-ovary-syndrome-patients-with-normal-circulating-testosterone-levels
#12
Andi Li, Lu Zhang, Jiajia Jiang, Nan Yang, Ying Liu, Lingbo Cai, Yugui Cui, Feiyang Diao, Xiao Han, Jiayin Liu, Yujie Sun
Polycystic ovary syndrome (PCOS) is a common reproductive disease with high heterogeneity. The role of excess androgen in PCOS etiology remains disputed, since around 20%-50% of PCOS women do not display hyperandrogenemia. The microenvironment of the ovary critically influences follicular development. In the present study, we assessed the role of androgen in PCOS by investigating whether excessive follicular fluid androgen was present in PCOS patients with normal serum androgen levels and influenced by follicular fluid insulin resistance (IR)...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29760296/hydroxytyrosol-and-olive-leaf-extract-exert-cardioprotective-effects-by-inhibiting-grp78-and-chop-expression
#13
Lixing Wu, Yuyu Xu, Zhijian Yang, Qing Feng
Myocardial infarction triggers massive biochemical changes, even cardiac cell death. Endoplasmic reticulum stress is involved in the pathology of myocardial infarction-mediated apoptosis. In the present study, myocardial cell line H9c2 cells were treated with cobalt chloride (CoCl2 ) to induce hypoxia. Isoproterenol was used for two successive days to induce myocardial infarction in SD rats. The cardioprotective effect of olive leaf extract (OLE) and its main constituent hydroxytyrosol and the underlying mechanisms were evaluated...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29760295/cognitive-function-assessment-should-be-included-in-preoperative-evaluation
#14
Li David, Liu Hong
No abstract text is available yet for this article.
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29569577/effects-of-volatile-anesthetic-preconditioning-on-expression-of-nfkb-regulated-genes-in-aged-rat-myocardium
#15
Zhong Cai-Yun, Qiu Hong, Chen Jun, Liu Hong
Volatile anesthetic preconditioning has been shown to be a potent way to provide myocardium protection against ischemia/reperfusion (I/R) injury; however, this cardioprotection is lost in senescent animal models and elderly patients. NFkB-regulated genes have been linked to myocardial I/R injury and anesthetic preconditioning. Here, we investigated NFkB activation related to anesthetic preconditioning in aging rat myocardium. Isolated, Langendorff perfused rat hearts from Fischer 344 male rats, 24 months old, were randomly assigned to one of the three groups...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29569576/urinary-tract-infection-due-to-fusarium-oxysporum-in-an-immunocompetent-patient-with-chronic-kidney-disease
#16
Khetan Seema, Khetan Prakash, Katkar Venkatesh, Kusulkar Minal
Infections due to Fusarium species are collectively referred to as fusariosis. Fusarium oxysporum has been reported to cause keratitis, onychomycosis, skin infections, catheter associated fungemia and has not been described as a cause of urinary tract infection. Here, we present the first case of fusariosis with urinary tract involvement in a 67 year old male, with chronic kidney disease and type 2 diabetes mellitus. This case illustrates the ever increasing spectrum of rare but offending pathogenic fungi. Early diagnosis of infection with a specific pathogen may lead to changes in antifungal therapy and may be critical for an improved outcome...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29497025/in-silico-prediction-of-monovalent-and-chimeric-tetravalent-vaccines-for-prevention-and-treatment-of-dengue-fever
#17
Subramaniyan Vijayakumar, Venkatachalam Ramesh, Srinivasan Prabhu, Palani Manogar
Reverse vaccinology method was used to predict the monovalent peptide vaccine candidate to produce antibodies for therapeutic purpose and to predict tetravalent vaccine candidate to act as a common vaccine to cover all the fever dengue virus serotypes. Envelope (E)-proteins of DENV-1-4 serotypes were used for vaccine prediction using NCBI, Uniprot/Swissprot, Swiss-prot viewer, VaxiJen V2.0, TMHMM, BCPREDS, Propred-1, Propred and MHC Pred,. E-proteins of DENV-1-4 serotypes were identified as antigen from which T cell epitopes, through B cell epitopes, were predicted to act as peptide vaccine candidates...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29497024/atypical-chemokine-receptor-ccrl2-is-overexpressed-in-prostate-cancer-cells
#18
Reyes Niradiz, Benedetti Ines, Rebollo Juan, Correa Oscar, Geliebter Jan
Atypical chemokine receptors have recently emerged as important molecular players in health and diseases; they affect chemokine availability and function and impact a multitude of pathophysiological events, including the tumorigenesis process. This family of atypical receptors comprises five members: ACKR1/DARC, ACKR2/D6, ACKR3/CXCR7, ACKR4/CCRL1, and ACKR5/CCRL2. This work evaluated the differential expression of these receptors in prostate cancer using quantitative PCR. Further evaluation of CCRL2 at the protein level confirmed its overexpression in a metastatic cell line and in malignant prostatic tissues from patients...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29358566/generation-and-functional-characterization-of-a-conditional-pumilio2-null-allele
#19
Kai-Bo Lin, Shi-Kun Zhang, Jie-Li Chen, Ding Yang, Meng-Yi Zhu, Eugene Yujun Xu
The highly conserved RNA binding protein PUF (Pumilio/FBF) family is present throughout eukaryotes from yeast to mammals, with critical roles in development, fertility and the nervous system. However, the function of the mammalian PUF family members remains underexplored. Our previous study reported that a gene-trap mutation of Pum2 results in a smaller testis but does not impact fertility and viability. Although the gene-trap mutation disrupted the key functional domain of PUM protein-PUM-HD (Pumilio homology domain), but still produced a chimeric Pum2-β-geo protein containing part of PUM2, raising a question if such a chimeric protein may provide any residual function or contribute to the reproductive phenotype...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29358565/microglia-activation-mediated-by-toll-like-receptor-4-impairs-brain-white-matter-tracts-in-rats
#20
Xing-Long Yang, Jing-Dong Zhang, Lian Duan, Huan-Gui Xiong, Yan-Ping Jiang, Hou-Cheng Liang
Microglia activation and white matter injury coexist after repeated episodes of mild brain trauma and ischemic stroke. Axon degeneration and demyelination can activate microglia; however, it is unclear whether early microglia activation can impair the function of white matter tracts and lead to injury. Rat corpus callosum (CC) slices were treated with lipopolysaccharide (LPS) or LPS + Rhodobacter sphaeroides (RS)-LPS that is a toll-like receptor 4 (TLR-4) antagonist. Functional changes reflected by the change of axon compound action potentials (CAPs) and the accumulation of β-amyloid precursor protein (β-APP) in CC nerve fibers...
November 1, 2017: Journal of Biomedical Research
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