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https://www.readbyqxmd.com/read/29777796/identification-of-a-sodium-pump-na-k-atpase-%C3%AE-1-targeted-peptide-for-pet-imaging-of-breast-cancer
#1
Qian Wang, Shi-Bing Li, Yi-Ying Zhao, Da-Nian Dai, Hui Du, Yan-Zhu Lin, Jia-Cong Ye, Jing Zhao, Wei Xiao, Yan Mei, Yi-Tai Xiao, Shi-Chu Liu, Yan Li, Yun-Fei Xia, Er-Wei Song, Gang-Hua Tang, Wei-Guang Zhang, Zhi-Jiang Li, Xiao-Bin Zheng, De-Hai Cao, Man-Zhi Li, Qian Zhong, Zhong-Ping Chen, Chao-Nan Qian, Wei Fan, Guo-Kai Feng, Mu-Sheng Zeng
The sodium pump Na+ /K+ ATPase a1 subunit(NKA a1), an attractive cancer-related biomarker and therapeutic target, is closely related to the development and progression of several cancers including breast cancer. Currently, a NKA a1 inhibitor, UNBS1450, has already evidenced its great therapeutic potential in personalized cancer treatment. The ability of non-invasive imaging of NKA a1 expression would be useful for selecting cancer patients who may benefit from this drug. Here, we identified an S3 peptide that is specifically homed to breast cancer by phage display...
May 16, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29777275/overexpression-of-abcb4-contributes-to-acquired-doxorubicin-resistance-in-breast-cancer-cells-in-vitro
#2
Jia-Feng Huang, Chun-Jie Wen, Guo-Zhi Zhao, Yi Dai, Ying Li, Lan-Xiang Wu, Hong-Hao Zhou
PURPOSE: Doxorubicin is one of the most active agents in the first-line therapy for metastatic breast cancer, but its utility is partially limited by the frequent emergence of doxorubicin resistance. In this study, we aimed to investigate the role of ATP-binding cassette sub-family B, member 4 (ABCB4) in acquired doxorubicin resistance in breast cancer cells, as well as its potential mechanism. METHODS: In doxorubicin-sensitive and -resistant breast cancer cell lines MCF-7 and MDA-MB-231, the expression levels of ABCB4 were detected using real-time quantitative PCR and Western blot analysis, the DNA methylation and histone acetylation status of ABCB4 gene were investigated by bisulfite-sequencing PCR (BSP) and chromatin immunoprecipitation (ChIP) assays, and the doxorubicin sensitivity and intracellular doxorubicin accumulation were observed using cell cytotoxicity assay and flow cytometry...
May 18, 2018: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/29750760/prospective-randomized-controlled-comparison-of-local-anesthetic-infusion-pump-versus-depofoam-bupivacaine-for-pain-management-after-unilateral-delayed-deep-inferior-epigastric-perforator-free-flap-reconstruction
#3
James Gatherwright, Rebecca Knackstedt, Amir Ghaznavi, Steven Bernard, Graham Schwarz, Andrea Moreira, Raffi Gurunluoglu, Risal Djohan
BACKGROUND: Effective postsurgical analgesia is a critical aspect of patient recovery. The goal of this prospective, randomized, controlled, blinded study was to examine the effect that liposomal bupivacaine delivered via a transversus abdominis plane (TAP) block has on pain control in women undergoing unilateral deep inferior epigastic perforator reconstruction. METHODS: IRB approval was granted for this prospective study. Patients were eligible if they were undergoing unilateral, delayed DIEP reconstruction...
March 15, 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29741914/barriers-to-breastfeeding-in-female-physicians
#4
Rebecca M Cantu, Marie S Gowen, Xinyu Tang, Kristin Mitchell
BACKGROUND: Breast milk is considered the normative nutrition for human infants, and exclusive breastfeeding for the first 6 months of life is recommended by several national and global societies. Female physicians are a high-risk group for early unintended weaning. We aimed to assess and compare the most common barriers to successful breastfeeding perceived by female physicians in various stages of training and practice. MATERIALS AND METHODS: Female faculty physicians and trainees (medical students, resident physicians, and fellows) affiliated with a large medical university in 2016 were surveyed via an anonymous web-based survey distributed through institutional e-mail lists...
May 9, 2018: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
https://www.readbyqxmd.com/read/29737828/light-activated-ros-responsive-nanoplatform-co-delivering-apatinib-and-doxorubicin-for-enhanced-chemo-photodynamic-therapy-of-multidrug-resistant-tumors
#5
Xiao Wei, Lingqiao Liu, Xing Guo, Yi Wang, Jingya Zhao, Shaobing Zhou
Cancer chemotherapy faces the problem of the multidrug resistance (MDR) of tumor cells, which is a puzzling issue that leads to treatment failure. To address it, an innovative approach is proposed to construct a light-activated reactive oxygen species (ROS)-responsive nanoplatform based on a protoporphyrin (PpIX)-conjugated and dual chemotherapeutics-loaded polymer micelle. This system combines chemotherapy and photodynamic therapy (PDT) to defeat the MDR of tumors. Such an intelligent nanocarrier can prolong the blood circulation due to the negatively charged polysaccharide component of chondroitin sulfate (CS) and subsequently being selectively internalized by DOX-resistant human breast cancer MCF-7 cells (MCF-7/ADR)...
May 8, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29708764/human-milk-biomarkers-of-secretory-activation-in-breast-pump-dependent-mothers-of-premature-infants
#6
Rebecca Hoban, Aloka L Patel, Clarisa Medina Poeliniz, Ching Tat Lai, Judy Janes, Donna Geddes, Paula P Meier
OBJECTIVE: Mothers of premature infants confront barriers to coming to volume (CTV; ≥500 mL/day mother's own milk [MOM] by postpartum day 14), a strong predictor of continued MOM provision at neonatal intensive care unit (NICU) discharge. We sought to determine concentrations of secretory activation biomarkers (MOM sodium, total protein, lactose, and citrate) during the first 14 postpartum days and to describe relationships among these biomarkers, pumped MOM volume, CTV, and pumping frequency...
April 30, 2018: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
https://www.readbyqxmd.com/read/29702465/galnt14-involves-the-regulation-of-multidrug-resistance-in-breast-cancer-cells
#7
Jinshuai Shan, Yang Liu, Yukun Wang, Yimiao Li, Xiaochun Yu, Chen Wu
GALNT14 is a member of N-acetylgalactosaminyltransferase enzyme family and mediates breast cancer cell development. Here, we find that GALNT14 regulates multidrug resistance (MDR) in breast cancer. The expression of GALNT14 is associated with MDR in breast cancer. Higher level of GALNT14 facilitates MCF-7 cells to resist Adriamycin, whereas knockdown of GALNT14 sensitizes cells to Adriamycin. Moreover, the expression of GALNT14 associates with the expression of P-gp, the efflux pump localized on the cell membrane, which could be the underlying mechanism of how GALNT14 induces MDR...
April 23, 2018: Translational Oncology
https://www.readbyqxmd.com/read/29701706/anticancer-profiling-for-coumarins-and-related-o-naphthoquinones-from-mansonia-gagei-against-solid-tumor-cells-in-vitro
#8
Mohammed A Baghdadi, Fahad A Al-Abbasi, Ali M El-Halawany, Ali H Aseeri, Ahmed M Al-Abd
Napthoquinones and coumarins are naturally occurring compounds with potential anticancer activity. In the current study, two O -naphthoquinons (mansonone-G and mansonone-N) and six coumarins (mansorin-A, mansorin-B, mansorin-C, mansorins-I, mansorin-II, and mansorin-III) were isolated from the heartwood of Mansonia gagei family Sterculariaceae. Isolated compounds were examined for their potential anticancer activity against breast (MCF-7), cervix (HeLa), colorectal (HCT-116) and liver (HepG2) cancer cells using Sulfarhodamine-B (SRB) assay...
April 26, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29694586/-guidance-on-breastfeeding-in-primary-health-care-and-the-association-with-exclusive-breastfeeding
#9
Jessica de Souza Alves, Maria Inês Couto de Oliveira, Rosane Valéria Viana Fonseca Rito
This article aims to analyze the association between guidance on breastfeeding in primary health care and exclusive breastfeeding. It involved a cross-sectional study conducted in 2013 in the city of Rio de Janeiro, Brazil, by means of interviews with 429 mothers of infants below six months of age in primary care units. We estimated adjusted prevalence ratios by Poisson regression. In the final model, the variables associated with the outcome (p ≤ 0.05) were retained. The prevalence of exclusive breastfeeding was 50...
April 2018: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/29689288/self-assembled-amphiphilic-zein-lactoferrin-micelles-for-tumor-targeted-co-delivery-of-rapamycin-and-wogonin-to-breast-cancer
#10
Sally A Sabra, Ahmed O Elzoghby, Salah A Sheweita, Medhat Haroun, Maged W Helmy, Maha A Eldemellawy, Ying Xia, David Goodale, Alison L Allan, Sohrab Rohani
Protein-based micelles have shown significant potential for tumor-targeted delivery of anti-cancer drugs. In this light, self-assembled nanocarriers based on GRAS (Generally recognized as safe) amphiphilic protein co-polymers were synthesized via carbodiimide coupling reaction. The new nano-platform is composed of the following key components: i) hydrophobic zein core to encapsulate the hydrophobic drugs rapamycin (RAP) and wogonin (WOG) with high encapsulation efficiency, ii) hydrophilic lactoferrin (Lf) corona to enhance the tumor targeting, and prolong systemic circulation of the nanocarriers, and iii) glutaraldehyde (GLA)-crosslinking to reduce the particle size and improve micellar stability...
April 21, 2018: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29658114/proton-pump-inhibitor-use-and-cancer-mortality
#11
Siri A Tvingsholm, Christian Dehlendorff, Kell Østerlind, Søren Friis, Marja Jäättelä
Proton pump inhibitors (PPIs) are commonly used as a supplement to cancer therapy. Yet, their effect on cancer mortality is largely unknown. Using data from Danish nationwide registries and Cox models regressing of both propensity scores and drug use, we estimated hazard ratios (HRs) with 95% confidence intervals (CIs) for cancer-specific and noncancer death among PPI users (≥2 prescriptions within six months after diagnosis; n = 36,066) compared with nonusers (<2 prescriptions, n = 311,853) or users of histamine H2 -receptor antagonists (H2 RA; n = 5,152)...
April 15, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29656039/maternal-adherence-to-guidance-on-breast-milk-collection-process
#12
M Carré, D Dumoulin, R Jounwaz, B Mestdagh, V Pierrat
INTRODUCTION: Breast milk expression with a breast pump increases the risk of contaminating milk with pathogenic bacteria; how to decontaminate breast pumps is controversial. The aim of this study was to investigate maternal adherence to updated French guidance on the breast milk collection process, including breast pump decontamination, and to identify potential sources of increased bacterial counts in breast milk in order to improve prevention messages to mothers. METHODS: Descriptive prospective study conducted between November 2015 and April 2016 in a French tertiary perinatal center...
April 11, 2018: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/29643996/selective-lysis-of-breast-carcinomas-by-simultaneous-stimulation-of-sodium-channels-and-blockade-of-sodium-pumps
#13
Harry J Gould, Jack Norleans, T David Ward, Chasiti Reid, Dennis Paul
Sodium influx through voltage-gated sodium channels (VGSCs) coupled with balanced removal of sodium ions via Na+ , K+ -ATPase is a major determinant of cellular homeostasis and intracellular ionic concentration. Interestingly, many metastatic carcinomas express high levels of these channels. We hypothesized that if excess VGSCs are activated and Na+ , K+ -ATPase is simultaneously blocked, the intracellular Na+ concentration should increase, resulting in water movement into the cell, causing swelling and lytic cell death...
March 20, 2018: Oncotarget
https://www.readbyqxmd.com/read/29604616/a-porous-graphitized-carbon-lc-esi-ms-method-for-the-quantitation-of-metronidazole-and-fluconazole-in-breast-milk-and-human-plasma
#14
Ariadni Geballa-Koukoula, Irene Panderi, Konstantinos Zervas, Khalil Geballa-Koukoulas, Eirini Kavvalou, Eirini Panteri-Petratou, Panagiota Vourna, Dimitra Gennimata
Information on drug transfer into the breast milk is essential to protect the infant from undesirable adverse effects of maternal consumption of drugs and to allow effective pharmacological treatment of breastfeeding mothers. Metronidazole and fluconazole are two drugs frequently used in nursing women to treat various infections, thus questioning infant's safety due to drug exposure through breast milk. In this article a porous graphitized carbon LC/ESI-MS assay was developed for the quantitation of metronidazole and fluconazole in breast milk and human plasma...
March 22, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29599904/targeting-multidrug-resistant-ovarian-cancer-through-estrogen-receptor-%C3%AE-dependent-atp-depletion-caused-by-hyperactivation-of-the-unfolded-protein-response
#15
Xiaobin Zheng, Neal Andruska, Michael J Lambrecht, Sisi He, Amadeo Parissenti, Paul J Hergenrother, Erik R Nelson, David J Shapiro
Ovarian cancers often recur and tumors acquire resistance to chemotherapy due to overexpression of the ATP-dependent efflux pump, multidrug resistance protein 1 (MDR1/P-glycoprotein/ABCB1). Nontoxic small molecule inhibitors targeting MDR1 have remained largely elusive. Instead, in a novel application of our recently described estrogen receptor α (ERα) biomodulator, BHPI, we targeted MDR1's substrate, ATP. BHPI depletes intracellular ATP and nearly blocks MDR1-mediated drug efflux in ovarian cancer cells by inducing toxic hyperactivation of the endoplasmic reticulum stress sensor, the unfolded protein response (UPR)...
March 13, 2018: Oncotarget
https://www.readbyqxmd.com/read/29561513/two-overlapping-clusters-of-group-b-streptococcus-late-onset-disease-in-a-nicu
#16
Alberto Berardi, Isotta Guidotti, Roberta Creti, Giovanna Alfarone, Antonella Grottola, Claudia Venturelli, Giulia Fregni Serpinid, Elisa Della Casa, Elena Vecchi, Alessandra Boncompagni, Carlotta Toffoli, Fabrizio Ferrari
OBJECTIVES: Current predominant routes of group B Streptococcus (GBS) transmission in preterm neonates admitted to neonatal intensive care unit (NICU) are poorly defined. We report two overlapping clusters of GBS late-onset disease (LOD) from June to September 2015 in an Italian NICU. METHODS: During the outbreak, possible sources of transmission (equipment, feeding bottles, breast pumps) were swabbed. Specimens from throat and rectum were collected on a weekly basis from all neonates admitted to NICU...
March 14, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29556575/pentoxifylline-and-vitamin-e-drug-compliance-after-adjuvant-breast-radiation-therapy
#17
Justin M Famoso, Brady Laughlin, Ali McBride, Victor J Gonzalez
Purpose: Breast fibrosis is a common late effect after therapeutic irradiation that can result in pain, poor cosmesis, and functional impairment. Randomized trials have demonstrated that radiation fibrosis may be preventable with a medication regimen of pentoxifylline and vitamin E. This study investigates patient compliance with pentoxifylline therapy while examining possible correlations to compliance. Methods and materials: We identified 90 patients who were prescribed pentoxifylline (400 mg 3 times daily) and vitamin E (400 IU once daily) after adjuvant breast radiation...
January 2018: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/29553558/breast-milk-enhances-growth-of-enteroids-an-ex-vivo-model-of-cell-proliferation
#18
Wyatt E Lanik, Lily Xu, Cliff J Luke, Elise Z Hu, Pranjal Agrawal, Victoria S Liu, Rajesh Kumar, Alexa M Bolock, Congrong Ma, Misty Good
Human small intestinal enteroids are derived from the crypts and when grown in a stem cell niche contain all of the epithelial cell types. The ability to establish human enteroid ex vivo culture systems are important to model intestinal pathophysiology and to study the particular cellular responses involved. In recent years, enteroids from mice and humans are being cultured, passaged, and banked away for future use in several laboratories across the world. This enteroid platform can be used to test the effects of various treatments and drugs and what effects are exerted on different cell types in the intestine...
February 15, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29519632/total-antioxidant-status-in-fresh-and-stored-human-milk-from-mothers-of-term-and-preterm-neonates
#19
Luminiţa Păduraru, Daniela Cristina Dimitriu, Andreea Luciana Avasiloaiei, Mihaela Moscalu, Gabriela Ildiko Zonda, Maria Stamatin
BACKGROUND: Antioxidant defense of the body is assured by both endogenous and exogenous factors comprising several enzymes, vitamins, protein components and derivates and oligoelements. Breast milk has been proven to have important and essential antioxidant composition to prevent and protect against diseases in infancy. The objective of this study was to determine the total antioxidant status (TAS) of human milk and to evaluate the differences between premature milk and term milk at different moments of lactation (colostrum, transitional milk and mature milk)...
February 8, 2018: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/29487350/winging-it-maternal-perspectives-and-experiences-of-breastfeeding-newborns-with-complex-congenital-surgical-anomalies
#20
Jill Demirci, Erin Caplan, Beverly Brozanski, Debra Bogen
OBJECTIVE: To describe the experience of breastfeeding (inclusive of breast milk expression/pumping, provision of breast milk via devices, and at-breastfeeding) among mothers of newborns with complex congenital surgical anomalies and the contexts under which pro-breastfeeding behaviors and attitudes are facilitated or compromised. STUDY DESIGN: We used qualitative description to analyze 23 interviews conducted with 15 mothers of newborns undergoing surgery for gastrointestinal, cardiac, or neural tube defects...
February 27, 2018: Journal of Perinatology: Official Journal of the California Perinatal Association
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