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Journal of Biomedical Research

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https://www.readbyqxmd.com/read/28630394/moringa-oleifera-based-diet-protects-against-nickel-induced-hepatotoxicity-in-rats
#1
Stephen Adeyemi Oluyomi, Sokolayemji Aroge Cincin, Adewumi Akanji Musbau
Multiple health-promoting effects have been attributed to the consumption of Moringa oleifera leaves, as part of diet without adequate scientific credence. This study evaluated the effect of M. oleifera-based diets on nickel (Ni) - induced hepatotoxicity in rats. Male rats assigned into six groups were given oral administration of 20 mg/kg body weight nickel sulfate in normal saline and either fed normal diet or M. oleifera-based diets for 21 days. All animals were sacrificed under anesthesia 24 hours after the last treatment...
June 20, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28630393/sample-size-re-estimation-without-un-blinding-for-time-to-event-outcomes-in-oncology-clinical-trials
#2
Huang Lihong, Bai Jianling, Yu Hao, Chen Feng
Sample size re-estimation is essential in oncology studies. However, the use of blinded sample size reassessment for survival data has been rarely reported. Based on the density function of the exponential distribution, an expectation-maximization (EM) algorithm of the hazard ratio was derived, and several simulation studies were used to verify its applications. The method had obvious variation in the hazard ratio estimates and overestimation for the relatively small hazard ratios. Our studies showed that the stability of the EM estimation results directly correlated with the sample size, the convergence of the EM algorithm was impacted by the initial values, and a balanced design produced the best estimates...
June 20, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28630392/nighttime-snacking-is-associated-with-risk-of-obesity-and-hyperglycemia-in-adults-a-cross-sectional-survey-from-chinese-adult-teachers
#3
Liu Xiaoyang, Zheng Chunlin, Xu Cheng, Liu Qian, Wang Jin, Hong Yongzhi, Zhao Peng
Relationship between nighttime snack and human health conditions remains unclear. In this paper, we analyzed the association of frequency of nighttime snacking with obesity, hyperlipidemia and hyperglycemia using a Chinese teacher cohort. The Chinese teacher study contains 22,176 of the general adult population operated on in 2015. Information of nighttime snacking frequency was acquired by questionnaire. Overweight and obesity outcome were assessed by body mass index (BMI), and hypertension; hyperlipidemia and hyperglycemia were self-reported...
June 20, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28630391/cost-and-value-in-medical-education-the-role-of-statistical-process-control
#4
Walsh Kieran
Medical education is associated with significant costs. These costs have led to a growing interest in how to deliver high quality or high quantity education on a limited budget. This in turn has led to an interest in how best to measure quantity, quality and cost and how to track these variables over time. The ultimate aim of the interest in cost and value in medical education is to improve quality or quantity over time and to reduce costs. This may occur by a number of methods - which might include e-learning or simple simulations...
June 20, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28630390/kavalactone-yangonin-induces-autophagy-and-sensitizes-bladder-cancer-cells-to-flavokawain-a-and-docetaxel-via-inhibition-of-the-mtor-pathway
#5
Liu Zhongbo, Ha U-Syn, Yu Ke, Wu Chunli, Yokoyama Noriko, Zi Xiaolin
Consumption of kava (Piper methysticum Forst) has been linked to reduced cancer risk in the South Pacific Islands. Kavalactones are major bioactive components in kava root extracts, which have recently demonstrated anti-cancer activities. However, molecular mechanisms of kavalactones' anti-cancer action remain largely unknown. We have identified two kavalactones, yangonin and 5' 6'-dehydrokawain, as potent inducers of autophagic cell death in bladder cancer cells. The effect of yangonin inducing autophagy is associated with increased expression of beclin and ATG5...
June 20, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28550276/synthetic-plasma-liquid-and-silicon-tubular-harness-based-pure-biological-transistor-amplifier-circuit
#6
Pandya Killol, Kosta Shivprasad
Kosta et al.first ever reported the development of biologic electronic components viz resistance R, capacitance C, diode D and transistor T using human tissues and human skin. In our early study, we have demonstrated the feasibility of liquid medium (synthetic blood plasma) to develop bio-transistor, bio-resistor, and bio-capacitor and combined them to form an amplifier using the metallic harness (the interconnecting copper wires and pieces).
May 26, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28550275/detection-of-small-bowel-tumor-in-wireless-capsule-endoscopy-images-using-an-adaptive-neuro-fuzzy-inference-system
#7
Alizadeh Mahdi, Haji Maghsoudi Omid, Sharzehi Kaveh, Reza Hemati Hamid, Kamali Asl Alireza, Talebpour Alireza
Automatic diagnosis tool helps physicians to evaluate capsule endoscopic examinations faster and more accurate. The purpose of this study was to evaluate the validity and reliability of an automatic post-processing method for identifying and classifying wireless capsule endoscopic images, and investigate statistical measures to differentiate normal and abnormal images. The proposed technique consists of two main stages, namely, feature extraction and classification. Primarily, 32 features incorporating four statistical measures (contrast, correlation, homogeneity and energy) calculated from co-occurrence metrics were computed...
May 26, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28550274/herpes-zoster-in-breast-cancer-a-case-report
#8
Darvishi Mohammad, Vasei Narges
There is little information on herpes zoster infection in breast cancer patients as a complication during adjuvant chemotherapy. We report a case of herpes zoster in a 65-year-old woman presented with low grade fever and vital signs together with skin symptoms such as severe edema, irritation and itching in the left breast where there was wound drainage. PCR test revealed varicella zoster virus. To the best of our knowledge, the histologic features coupled with PCR led to a diagnosis of herpes zoster.
May 26, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28550273/effects-of-leptin-on-femoral-fracture-in-rats
#9
Wang Lei, Sun Sixin, Yang Lei, Lu Chun, Cao Xiaojian
In this study, our objective was to evaluate effects of leptin on fracture healing in rats. Seventy two male Sprague-Dawley (SD) rats were randomized into 3 groups. Standardized femoral fractures were created in all the rats. Group A was treated with 1 mL normal saline (NS), group B with 0.3 μg/kg leptin in 1 mL NS, and group C with 0.5 μg/kg leptin in 1 mL NS for 2 weeks intraperitoneally. Each group was divided into three subgroups including 8 rats for evaluation at 2, 4 and 8 weeks. Radiological evaluation showed that callus formation of group B and C was all significantly higher than group A at 8 weeks (P=0...
May 26, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28550272/non-alcoholic-fatty-liver-disease-a-chronic-disease-of-the-21-st-century
#10
Metrakos Peter, Nilsson Tommy
Non-alcoholic fatty liver disease (NAFLD) comprises a spectrum of metabolic states ranging from simple steatosis to inflammation with associated fibrosis to cirrhosis. Though accumulation of hepatic fat is not associated with a significant increase in mortality rates, hepatic inflammation is, as this augments the risk of terminal liver disease, i.e., cirrhosis, hepatic decompensation (liver failure) and/or hepatocellular carcinoma. Disease progression is usually slow, over a decade or more and, for the most part, remains asymptomatic...
May 26, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28550271/the-pleiotropic-vasoprotective-functions-of-high-density-lipoproteins-hdl
#11
Boyce Guilaine, Button Emily, Soo Sonja, Wellington Cheryl
The pleiotropic functions of circulating high density lipoprotein (HDL) on peripheral vascular health are well established. HDL plays a pivotal role in reverse cholesterol transport and is also known to suppress inflammation, endothelial activation and apoptosis in peripheral vessels. Although not expressed in the central nervous system, HDL has nevertheless emerged as a potential resilience factor for dementia in multiple epidemiological studies. Animal model data specifically support a role for HDL in attenuating the accumulation of β-amyloid within cerebral vessels concomitant with reduced neuroinflammation and improved cognitive performance...
May 26, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28546519/association-of-three-single-nucleotide-polymorphisms-of-esr1-with-breast-cancer-susceptibility-a-meta-analysis
#12
Xu Hu, Linfei Jiang, Chenhui Tang, Yuehong Ju, Li Jiu, Yongyue Wei, Guo Li, Zhao Yang
Expression of estrogen receptors is correlated with breast cancer risk, but inconsistent results have been reported. To clarify potential estrogen receptor (ESR)-related breast cancer risk, we analyzed genetic variants of ESR1 in association with breast cancer susceptibility. We performed a meta-analysis to investigate the association between rs2234693, rs1801132, and rs2046210 (single nucleotide polymorphisms of ESR1), and breast cancer risk. Our analysis included 44 case-control studies. For rs2234693, the CC genotype had a higher risk of breast cancer compared to the TT or CT genotype...
April 6, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28546518/safety-immunogenicity-and-cross-species-protection-of-a-plasmid-dna-encoding-plasmodium-falciparum-sera5-polypeptide-microbial-epitopes-and-chemokine-genes-in-mice-and-olive-baboons
#13
Nyamongo Onkoba, Ruth M Mumo, Horace Ochanda, Charles Omwandho, Hastings S Ozwara, Thomas G Egwang
Incorporation of biomolecular epitopes to malarial antigens should be explored in the development of strain-transcending malarial vaccines. The present study sought to determine safety, immunogenicity and cross-species efficacy ofPlasmodium falciparum serine repeat antigen 5 polypeptide co-expressed with epitopes of Bacille-Calmette Guerin (BCG), tetanus toxoid (TT) and a chemokine gene. Olive baboons and BALB/c mice were randomly assigned into vaccine and control groups. The vaccine group animals were primed and boosted twice with pIRES plasmids encoding the SERA5+ BCG+ TT alone, or with either CCL5 or CCL20 and the control group with pIRES plasmid vector backbone...
April 6, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28546517/host-guest-interaction-of-%C3%AE-cyclodextrin-with-isomeric-ursolic-acid-and-oleanolic-acid-physicochemical-characterization-and-molecular-modeling-study
#14
Yuan Huang, Peng Quan, Yongwei Wang, Dongsheng Zhang, Mingwan Zhang, Rui Li, Nan Jiang
Ursolic acid (UA) and oleanolic acid (OA) are insoluble drugs. The objective of this study was to encapsulate them into β-cyclodextrin (β-CD) and compare the solubility and intermolecular force of β-CD with the two isomeric triterpenic acids. The host-guest interaction was explored in liquid and solid state by ultraviolet-visible absorption, 1 H NMR, phase solubility analysis, and differential scanning calorimetry, X-ray powder diffractometry, and molecular modeling studies. Both experimental and theoretical studies revealed that β-CD formed 1: 1 water soluble inclusion complexes and the complexation process was naturally favorable...
April 6, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28546516/re-evaluating-the-role-of-epithelial-mesenchymal-transition-in-cancer-progression
#15
Andrew Sulaiman, Zemin Yao, Lisheng Wang
Epithelial-mesenchymal transition (EMT) and mesenchymal-epithelial transition (MET) are essential for embryonic development and also important in cancer progression. In a conventional model, epithelial-like cancer cells transit to mesenchymal-like tumor cells with great motility via EMT transcription factors; these mesenchymal-like cells migrate through the circulation system, relocate to a suitable site and then convert back to an epithelial-like phenotype to regenerate the tumor. However, recent findings challenge this conventional model and support the existence of a stable hybrid epithelial/mesenchymal (E/M) tumor population...
April 6, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28546515/the-interaction-between-the-wnt-%C3%AE-catenin-signaling-cascade-and-pkg-activation-in-cancer
#16
Kevin Lee, Gary A Piazza
The activation of the Wnt/β-catenin signaling cascade has been well studied and documented in colorectal cancer (CRC). The long-term use of non-steroidal anti-inflammatory drugs (NSAIDs) has been shown to reduce the incidence and risk of death from CRC in numerous epidemiological studies. The NSAID sulindac has also been reported to cause regression of precancerous adenomas in individuals with familial adenomatous polyposis who are at high risk of developing CRC. The mechanism responsible for cancer chemopreventive activity of NSAIDs is not well understood but may be unrelated to their cyclooxygenase inhibitory activity...
April 6, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28536325/association-of-three-single-nucleotide-polymorphisms-of-esr1-with-breast-cancer-susceptibility-a-meta-analysis
#17
Xu Hu, Linfei Jiang, Chenhui Tang, Yuehong Ju, Li Jiu, Yongyue Wei, Guo Li, Zhao Yang
Expression of estrogen receptors is correlated with breast cancer risk, but inconsistent results have been reported. To clarify potential estrogen receptor (ESR)-related breast cancer risk, we analyzed genetic variants of ESR1 in association with breast cancer susceptibility. We performed a meta-analysis to investigate the association between rs2234693, rs1801132, and rs2046210 (single nucleotide polymorphisms of ESR1), and breast cancer risk. Our analysis included 44 case-control studies. For rs2234693, the CC genotype had a higher risk of breast cancer compared to the TT or CT genotype...
April 6, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110321/recent-advances-in-arsenic-trioxide-encapsulated-nanoparticles-as-drug-delivery-agents-to-solid-cancers
#18
Akhtar Anam, Wang Scarlet Xiaoyan, Ghali Lucy, Bell Celia, Wen Xuesong
Since arsenic trioxide was first approved as the front line therapy for acute promyelocytic leukemia 25 years ago, its anti-cancer properties for various malignancies have been under intense investigation. However, the clinical successes of arsenic trioxide in treating hematological cancers have not been translated to solid cancers. This is due to arsenic's rapid clearance by the body's immune system before reaching the tumor site. Several attempts have henceforth been made to increase its bioavailability toward solid cancers without increasing its dosage albeit without much success...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110320/acute-on-chronic-liver-failure-recent-update
#19
Alam Azeem, Chun Suen Ka, Ma Daqing
Acute on chronic liver failure (ACLF) was first described in 1995 as a clinical syndrome distinct to classic acute decompensation. Characterized by complications of decompensation, ACLF occurs on a background of chronic liver dysfunction and is associated with high rates of organ failure and significant short-term mortality estimated between 45% and 90%. Despite the clinical relevance of the condition, it still remains largely undefined with continued disagreement regarding its precise etiological factors, clinical course, prognostic criteria and management pathways...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110319/perioperative-remote-acute-lung-injury-recent-update
#20
Jin Zhaosheng, Suen Ka Chun, Ma Daqing
Perioperative acute lung injury (ALI) is a syndrome characterised by hypoxia and chest radiograph changes. It is a serious post-operative complication, associated with considerable mortality and morbidity. In addition to mechanical ventilation, remote organ insult could also trigger systemic responses which induce ALI. Currently, there are limited treatment options available beyond conservative respiratory support. However, increasing understanding of the pathophysiology of ALI and the biochemical pathways involved will aid the development of novel treatments and help to improve patient outcome as well as to reduce cost to the health service...
January 19, 2017: Journal of Biomedical Research
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