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https://www.readbyqxmd.com/read/29164072/a-new-strain-collection-for-improved-expression-of-outer-membrane-proteins
#1
Ina Meuskens, Marcin Michalik, Nandini Chauhan, Dirk Linke, Jack C Leo
Almost all integral membrane proteins found in the outer membranes of Gram-negative bacteria belong to the transmembrane β-barrel family. These proteins are not only important for nutrient uptake and homeostasis, but are also involved in such processes as adhesion, protein secretion, biofilm formation, and virulence. As surface exposed molecules, outer membrane β-barrel proteins are also potential drug and vaccine targets. High production levels of heterologously expressed proteins are desirable for biochemical and especially structural studies, but over-expression and subsequent purification of membrane proteins, including outer membrane proteins, can be challenging...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29109183/mutation-and-suppressor-analysis-of-the-essential-lps-transport-protein-lpta-reveals-strategies-to-overcome-severe-outer-membrane-permeability-defects-in-escherichia-coli
#2
Federica A Falchi, Elisa A Maccagni, Simone Puccio, Clelia Peano, Cristina De Castro, Angelo Palmigiano, Domenico Garozzo, Alessandra M Martorana, Alessandra Polissi, Gianni Dehò, Paola Sperandeo
In Gram-negative bacteria, lipopolysaccharide (LPS) contributes to the robust permeability barrier of the outer membrane (OM), preventing the entry of toxic molecules such as detergents and antibiotics. LPS is transported from the inner membrane (IM) to the OM by the Lpt multiprotein machinery. Defects in LPS transport compromise LPS assembly at the OM and result in increased antibiotic sensitivity. LptA is a key component of the Lpt machine that interacts with the IM protein LptC and chaperons LPS through the periplasm...
November 6, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/29062634/septic-shock-following-prostate-biopsy-aggressive-limb-salvage-for-extremities-after-pressor-induced-ischemic-gangrene
#3
Jocelyn Lu, Tammer Elmarsafi, Chrisovalantis Lakhiani, Sarah R Sher, Christopher Attinger, Karen K Evans
Vasopressors used to treat patients with septic shock can cause ischemic necrosis of appendages such as the ears and nose, as well as the extremities. Cases of quadruple-extremity necrosis have high morbidity and mortality, and a profound negative impact on quality of life. This case report details the successful limb salvage and return to function using free tissue transfer as a means to salvage bilateral lower extremities in a patient who suffered vasopressor-induced ischemia of upper and lower extremities after prostate biopsy-induced septic shock...
September 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/29036509/medication-usage-change-in-older-people-65-in-england-over-20-years-findings-from-cfas-i-and-cfas-ii
#4
L Gao, Ian Maidment, Fiona E Matthews, Louise Robinson, Carol Brayne
Background: medical practice has changed over the last decades reflecting the ageing population, when multi-morbidity requiring multiple medications is more common. Objective: describe and quantify self-reported medicine use including both prescription and over the counter medicines in two comparable population-based studies of older people (65+) in England and to assess the nature and scale of polypharmacy. Methods: data used were from two separate population-based studies; the Cognitive Function Ageing Study I and II...
September 26, 2017: Age and Ageing
https://www.readbyqxmd.com/read/28957341/efficacy-and-safety-of-sequential-versus-quadruple-therapy-as-second-line-treatment-for-helicobacter-pylori-infection-a-randomized-controlled-trial
#5
RANDOMIZED CONTROLLED TRIAL
Daniela Munteanu, Ohad Etzion, Gil Ben-Yakov, Daniel Halperin, Leslie Eidelman, Doron Schwartz, Victor Novack, Naim Abufreha, Pavel Krugliak, Alexander Rozenthal, Nava Gaspar, Alexander Moshkalo, Vitaly Dizingof, Alexander Fich
BACKGROUND AND AIMS: Quadruple therapy is recommended as second-line treatment for Helicobacter pylori eradication failure. However, high cost, multiple side effects, and low adherence rates are major drawbacks to its routine use. Our aim was to compare the efficacy and safety of sequential versus quadruple regimens as second line treatment for persistent Helicobacter pylori infection. METHODS: Prospective, randomized, open label trial was conducted at a large academic, tertiary care center in Israel...
2017: PloS One
https://www.readbyqxmd.com/read/28877572/safety-efficacy-and-physicochemical-characterization-of-tinospora-crispa-ointment-a-community-based-formulation-against-pediculus-humanus-capitis
#6
Gerwin Louis Tapan Dela Torre, Kerstin Mariae Gonzales Ponsaran, Angelica Louise Dela Peña de Guzman, Richelle Ann Mallapre Manalo, Erna Custodio Arollado
The high prevalence of pediculosis capitis, commonly known as head lice (Pediculus humanus capitis) infestation, has led to the preparation of a community-based pediculicidal ointment, which is made of common household items and the extract of Tinospora crispa stem. The present study aimed to evaluate the safety, efficacy, and physicochemical characteristics of the T. crispa pediculicidal ointment. The physicochemical properties of the ointment were characterized, and safety was determined using acute dermal irritation test (OECD 404), while the efficacy was assessed using an in vitro pediculicidal assay...
August 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28861689/superactive-human-leptin-antagonist-shla-triple-lan1-and-quadruple-lan2-leptin-mutein-as-a-promising-treatment-for-human-folliculoma
#7
E Fiedor, E L Gregoraszczuk
PURPOSE: There are no data showing a direct correlation between obesity and increased blood leptin levels with folliculoma. Moreover, folliculoma is not the best studied among other ovarian cancer types. We investigated whether oestradiol can modulate ObR expression in some oestrogen-responsive tissues and that leptin exerts its activity not only via the leptin receptor but also through cross talk with other signalling systems. We hypothesise that blocking ObR expression could be a novel treatment for gonadal ovarian cancer...
October 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28814829/antibiotic-susceptibility-heteroresistance-and-updated-treatment-strategies-in-helicobacter-pylori-infection
#8
REVIEW
Maria Teresa Mascellino, Barbara Porowska, Massimiliano De Angelis, Alessandra Oliva
In this review, we discuss the problem of antibiotic resistance, heteroresistance, the utility of cultures and antibiotic susceptibility tests in Helicobacter pylori (Hp) eradication, as well as the updated treatment strategies for this infection. The prevalence of antibiotic resistance is increasing all over the world, especially for metronidazole and clarithromycin, because of their heavy use in some geographical areas. Heteroresistance (simultaneous presence of both susceptible and resistant strains in different sites of a single stomach) is another important issue, as an isolate could be mistakenly considered susceptible if a single biopsy is used for antimicrobial tests...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28736579/changes-of-myocardial-lipidomics-profiling-in-a-rat-model-of-diabetic-cardiomyopathy-using-uplc-q-tof-ms-analysis
#9
Shifen Dong, Rong Zhang, Yaoyue Liang, Jiachen Shi, Jiajia Li, Fei Shang, Xuezhou Mao, Jianning Sun
BACKGROUND: Diabetic cardiomyopathy (DCM) is a serious cardiac dysfunction induced by changes in the structure and contractility of the myocardium that are initiated in part by alterations in energy substrates. The underlying mechanisms of DCM are still under controversial. The observation of lipids, especially lipidomics profiling, can provide an insight into the know the biomarkers of DCM. The aim of our research was to detect changes of myocardial lipidomics profiling in a rat model of diabetic cardiomyopathy...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28702150/adding-ofloxacin-to-standard-triple-drug-regimens-increased-the-helicobacter-pylori-eradication-rate-data-from-randomized-clinical-trial
#10
Mahmoud Sadeghi-Hadad-Zavareh, Seyyedsaeid Mohammadi, Mahmoud Hajiahmadi, Mostafa Javanian, Masoomeh Habibian
BACKGROUND: The rate of Helicobacter pylori (H.pylori) eradication in dyspeptic patients using bismuth- based triple therapy is low due to bacterial that are resistant to antibiotics. The results of recent studies regarding levofloxacin have been encouraging, but the high cost of treatment prevents its routine administration. We, therefore, performed the present double-blind clinical trial to compare the efficiency of quadruple-drug regimen containing ofloxacin, clarithromycin, amoxicillin, and omeprazole and the same standard triple-therapy regimen minus ofloxacin in H...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/28658273/a-structural-variant-in-the-5-flanking-region-of-the-twist2-gene-affects-melanocyte-development-in-belted-cattle
#11
Nivedita Awasthi Mishra, Cord Drögemüller, Vidhya Jagannathan, Irene Keller, Daniel Wüthrich, Rémy Bruggmann, Julia Beck, Ekkehard Schütz, Bertram Brenig, Steffi Demmel, Simon Moser, Heidi Signer-Hasler, Aldona Pieńkowska-Schelling, Claude Schelling, Marcos Sande, Ronald Rongen, Stefan Rieder, Robert N Kelsh, Nadia Mercader, Tosso Leeb
Belted cattle have a circular belt of unpigmented hair and skin around their midsection. The belt is inherited as a monogenic autosomal dominant trait. We mapped the causative variant to a 37 kb segment on bovine chromosome 3. Whole genome sequence data of 2 belted and 130 control cattle yielded only one private genetic variant in the critical interval in the two belted animals. The belt-associated variant was a copy number variant (CNV) involving the quadruplication of a 6 kb non-coding sequence located approximately 16 kb upstream of the TWIST2 gene...
2017: PloS One
https://www.readbyqxmd.com/read/28627321/diabetes-knowledge-management-and-prevention-among-haitian-immigrants-in-philadelphia
#12
Rhoda K Moise, Donaldson F Conserve, Bilikisu Elewonibi, Lori A Francis, Rhonda BeLue
Purpose Guided by the PEN-3 Cultural Model, the purpose of this study is to generate culturally framed insight into diabetes knowledge, management, and prevention among Haitians. Despite the disproportionate distribution of type II diabetes mellitus among US minorities, limited research explores outcomes within racial ethnic groups. It is particularly important to disaggregate the large racial-ethnic groups of black given the population growth among foreign-born blacks, such as Haitians, whose population has more than quadrupled in recent decades...
August 2017: Diabetes Educator
https://www.readbyqxmd.com/read/28617030/a-real-life-study-of-helicobacter-pylori-eradication-with-bismuth-quadruple-therapy-in-na%C3%A3-ve-and-previously-treated-patients
#13
Blas José Gómez Rodríguez, Luisa Castro Laria, Federico Argüelles Arias, Cristina Castro Márquez, Ángel Caunedo Álvarez, Manuel Romero Gómez
OBJECTIVE: To evaluate the efficacy and safety of a quadruple regimen (BMTO) of the "3-in-1 capsule" (containing bismuth subcitrate potassium, metronidazole and tetracycline) plus omeprazole in naïve and previously treated patients diagnosed with Helicobacter pylori (H. pylori) infection in the clinical setting in Seville (Spain). METHODS: This is a prospective study carried out on consecutive patients with a confirmed H. pylori infection and upper gastrointestinal symptoms...
June 15, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28553699/generation-of-cmahko-gtko-shtnfri-fc-ho-1-quadruple-gene-modified-pigs
#14
Geon A Kim, Eun Mi Lee, Jun-Xue Jin, Sanghoon Lee, Anukul Taweechaipaisankul, Jong Ik Hwang, Zahid Alam, Curie Ahn, Byeong Chun Lee
As an alternative source of organs for transplantation into humans, attention has been directed to pigs due to their similarities in biological features and organ size. However, severe immune rejection has prevented successful xenotransplantation using pig organs and tissues. To overcome immune rejection, recently developed genetic engineering systems such as TALEN coupled with somatic cell nuclear transfer (SCNT) to make embryos could be used to produce pigs compatible with xenotransplantation. We used the TALEN system to target the non-Gal antigen cytidine monophosphate-N-acetylneuraminic acid hydroxylase (CMAH) gene in pigs that is naturally deleted in humans...
August 2017: Transgenic Research
https://www.readbyqxmd.com/read/28485775/determination-of-phloroglucinol-by-hplc-ms-ms-and-its-application-to-a-bioequivalence-study-in-healthy-volunteers
#15
X-Q Li, R-T Wang, Q-H Wang, X-L Tang, C-T Lu, H-G Gong, A-D Wen
OBJECTIVE: The aim of this study was to compare the pharmacokinetic characteristics of phloroglucinol between an orally disintegrating tablet and an orally lyophilized tablet of phloroglucinol in healthy volunteers under fasting condition. PATIENTS AND METHODS: A rapid and simple method based on high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method has been developed and validated for the determination of phloroglucinol in human plasma...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28475418/asp30-of-aspergillus-oryzae-cutinase-cutl1-is-involved-in-the-ionic-interaction-with-fungal-hydrophobin-rola
#16
Yuki Terauchi, Yoon-Kyung Kim, Takumi Tanaka, Kei Nanatani, Toru Takahashi, Keietsu Abe
Aspergillus oryzae hydrophobin RolA adheres to the biodegradable polyester polybutylene succinate-co-adipate (PBSA) and promotes PBSA degradation by interacting with A. oryzae polyesterase CutL1 and recruiting it to the PBSA surface. In our previous studies, we found that positively charged amino acid residues (H32, K34) of RolA and negatively charged residues (E31, D142, D171) of CutL1 are important for the cooperative ionic interaction between RolA and CutL1, but some other charged residues in the triple mutant CutL1-E31S/D142S/D171S are also involved...
July 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28464095/breeding-and-genetics-symposium-resilience-and-lessons-from-studies-in-genetics-of-heat-stress
#17
I Misztal
Production environments are expected to change, mostly to a hotter climate but also possibly more extreme and drier. Can the current generation of farm animals cope with the changes or should it be specifically selected for changing conditions? In general, genetic selection produces animals with a smaller environmental footprint but also with smaller environmental flexibility. Some answers are coming from heat-stress research across species, with heat tolerance partly understood as a greater environmental flexibility...
April 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28357445/the-decade-of-roma-inclusion-did-it-make-a-difference-to-health-and-use-of-health-care-services
#18
János Sándor, Zsigmond Kósa, Klára Boruzs, Julianna Boros, Ildikó Tokaji, Martin McKee, Róza Ádány
OBJECTIVES: We investigated whether the severely disadvantaged health of Hungarian Roma adults living in segregated settlements changed by the Decade of Roma Inclusion program. METHODS: We compared the results of two paired health interview surveys that we carried out using the same methodology before and after the Decade, on the general Hungarian and Roma populations. RESULTS: Self-perceived health status of younger Roma worsened, while it improved among older Roma...
March 29, 2017: International Journal of Public Health
https://www.readbyqxmd.com/read/28314101/dielectrophoresis-system-for-testing-antimicrobial-susceptibility-of-gram-negative-bacteria-to-%C3%AE-lactam-antibiotics
#19
I-Hsiu Su, Wen-Chien Ko, Chung-Hsin Shih, Fang-Hao Yeh, Yung-Nien Sun, Jung-Chih Chen, Po-Lin Chen, Hsien-Chang Chang
Gram-negative bacteria (GNBs) are common pathogens causing severe sepsis. Rapid evaluation of drug susceptibility would guide effective antibiotic treatment and promote life-saving. A total of 78 clinical isolates of 13 Gram-negative species collected between April 2013 and November 2013 from two medical centers in Tainan were tested. Bacterial morphology changes in different concentrations of antibiotics were observed under the electric field of a quadruple electrode array using light microscopy. The minimal inhibitory concentrations (MICs) of four antimicrobial agents, namely, cefazolin, ceftazidime, cefepime, and doripenem, were determined by the dielectrophoretic antimicrobial susceptibility testing (dAST) and by the conventional broth dilution testing (BDT)...
March 31, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28274128/-evaluation-of-a-new-immunochromatographic-kit-for-enhanced-detection-of-influenza-b-virus
#20
Yasushi Ashikawa, Yoshio Takasaki, Shizuo Shindo, Yuji Yamashita, Keigo Shibao, Takashi Yokoyama, Takato Yokoyama, Minako Iwaya, Yumi Kiyomatsu, Hiroshi Miyamoto
We have evaluated a new immunochromatographic kit, "KBM LineCheck Flu AB", which had been developed for enhanced detection of influenza B viruses. Five strains of influenza A and B viruses were tested for reactivity and detection limits of the kit. Compared with the detection limits of commercially available kit of QuickNavi-Flu, "KBM LineCheck Flu AB" showed a nearly equal reactivity to influenza A viruses, but quadruple reactivity to 2 influenza B viruses. Also, "KBM LineCheck Flu AB" exhibited high specificity when tested in 130 influenza-negative culture specimens derived from 24 adult volunteers...
March 22, 2017: JARMAM: Journal of the Association for Rapid Method and Automation in Microbiology
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