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https://www.readbyqxmd.com/read/29326867/cavitary-lung-lesion-suspicious-for-malignancy-reveals-mycobacterium-xenopi
#1
Sumit Fogla, Vaishali M Pansare, Luis G Camero, Uzma Syeda, Naveen Patil, Arun Chaudhury
We report the case of a 68-year-old gentleman who presented with musculoskeletal chest pain which appeared suddenly when he bent over with his dog. The chest pain was localized to the left lower chest and increased with movement and deep breathing. The patient did not complain weight loss, night sweat, fever or chill. He complained of mild cough, with expectoration of whitish mucus. Imaging revealed cavitary chest lesion in the right upper lobe, which was initially suspected to be lung cancer. The patient had a 50-year-old history of smoking 2 packs per day...
2018: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29326367/organic-anion-transporter-2-mediates-hepatic-uptake-of-tolbutamide-a-cytochrome-p450-2c9-probe-drug
#2
Yi-An Bi, Sumathy Mathialagan, Laurie Tylaska, Myra Fu, Julie Keefer, Anna Vildhede, Chester Costales, A David Rodrigues, Manthena Varma
Tolbutamide is primarily metabolized by cytochrome P450 (CYP)2C9, and thus, frequently applied as a clinical probe substrate for CYP2C9 activity. However, there is a marked discrepancy in the in vitro-in vivo extrapolation of its metabolic clearance implying potential for additional clearance mechanisms. The goal of this study was to evaluate the role of hepatic uptake transport in the pharmacokinetics of tolbutamide and identify the molecular mechanism thereof. Transport studies using singly-transfected cells expressing six major hepatic uptake transporters showed that tolbutamide is a substrate to organic anion transporter (OAT)2 alone -- with transporter affinity (Km) of 19...
January 11, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29326013/a-cluster-of-multidrug-resistant-mycobacterium-tuberculosis-among-patients-arriving-in-europe-from-the-horn-of-africa-a-molecular-epidemiological-study
#3
Timothy M Walker, Matthias Merker, Astrid M Knoblauch, Peter Helbling, Otto D Schoch, Marieke J van der Werf, Katharina Kranzer, Lena Fiebig, Stefan Kröger, Walter Haas, Harald Hoffmann, Alexander Indra, Adrian Egli, Daniela M Cirillo, Jérôme Robert, Thomas R Rogers, Ramona Groenheit, Anne T Mengshoel, Vanessa Mathys, Marjo Haanperä, Dick van Soolingen, Stefan Niemann, Erik C Böttger, Peter M Keller
BACKGROUND: The risk of tuberculosis outbreaks among people fleeing hardship for refuge in Europe is heightened. We describe the cross-border European response to an outbreak of multidrug-resistant tuberculosis among patients from the Horn of Africa and Sudan. METHODS: On April 29 and May 30, 2016, the Swiss and German National Mycobacterial Reference Laboratories independently triggered an outbreak investigation after four patients were diagnosed with multidrug-resistant tuberculosis...
January 8, 2018: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29325007/rifampicin-treatment-of-blattella-germanica-evidences-a-fecal-transmission-route-of-their-gut-microbiota
#4
Tania Rosas, Carlos García-Ferris, Rebeca Domínguez-Santos, Pablo Llop, Amparo Latorre, Andrés Moya
Eukaryotes have established symbiotic relationship with microorganisms, which enables them to accomplish functions that they cannot perform alone. In the German cockroach Blattella germanica, the obligate endosymbiont Blattabacterium coexists with a rich gut microbiota. The transmission of Blattabacterium is vertical but little is known about how the gut microbiota colonizes newborn individuals. In this study, we treated B. germanica populations with rifampicin, a broad-spectrum antibiotic, during two generations and analyzed gut bacterial composition and the Blattabacterium load in control and rifampicin-treated populations...
January 9, 2018: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29321414/the-platelet-count-can-predict-in-hospital-death-in-hiv-negative-smear-positive-pulmonary-tuberculosis-inpatients
#5
Hideto Goto, Nobuyuki Horita, Ken Tashiro, Kenjiro Nagai, Masaki Yamamoto, Takashi Sato, Yu Hara, Hideyuki Nagakura, Yuji Shibata, Hiroki Watanabe, Kentaro Nakashima, Ryota Ushio, Akimichi Nagashima, Misako Ikeda, Atsuya Narita, Katsuhito Sasaki, Nobuaki Kobayashi, Makoto Kudo, Takeshi Kaneko
Introduction This retrospective cohort study investigated whether the three components of the blood cell count have prognostic implications in HIV-negative Japanese adult inpatients with smear-positive pulmonary tuberculosis. Methods We reviewed patients who were treated by the isoniazid, rifampicin, pyrazinamide, and ethambutol regimen or by the isoniazid, rifampicin, and ethambutol regimen. The association between the patient data on admission and the survival outcome was evaluated. Results We reviewed 367 consecutive patients (male, 60...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29319262/successful-management-of-elizabethkingia-meningoseptica-meningitis-with-intraventricular-vancomycin
#6
Rajeev Soman, Umang Agrawal, Mitesh Suthar, Ketan Desai, Anjali Shetty
Elizabethkingia meningoseptica, formerly Chryseobacterium meningosepticum usually causes neonatal meningitis and is a rare cause of nosocomial meningitis in adults. E. meningoseptica is resistant to most antibiotics, and the use of inactive drugs as empirical therapy may contribute to poor outcome in many patients. Vancomycin, alone or in combination with rifampicin, has been successful in the treatment of meningitis in infants1. We present a case of E. meningoseptica meningitis in an adult who was treated initially with intravenous vancomycin and oral rifampicin, but did not respond to the treatment...
October 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29319042/multidrug-resistant-tuberculosis-rifampicin-resistant-tuberculosis-principles-of-management
#7
Rajendra Prasad, Nikhil Gupta, Amitabh Banka
Multidrug-resistant tuberculosis (MDR-TB)/rifampicin-resistant TB (RR-TB) is human-made problem and emerging due to poor management of TB and is a threat to control of TB. Early suspicion and diagnosis are important. Culture and drug susceptibility testing are gold standards, but newer molecular methods help in rapid diagnosis. Once diagnosed, prompt treatment should be started, preferably under direct observation. Treatment can be standardized or individualized. Conventional regimen takes up to 24 months but recently shorter regimen of up to 12 months was introduced in specific subset of MDR-TB/RR-TB patients...
January 2018: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/29315976/the-therapeutic-role-of-rifampicin-in-alzheimer-s-disease
#8
REVIEW
Burak Yulug, Lütfü Hanoglu, Mehmet Ozansoy, Dogan Isık, Ulkan Kilic, Ertugrul Kilic, Wolf Rüdiger Schabitz
Rifampicin exerts significant brain protective functions in multiple experimental models. Here we summarized the underlying mechanisms of the neuroprotective and pro-cognitive effects of rifampicin that is mediated by its anti-inflammatory, anti-tau, anti-amyloid and cholinergic effects. Beyond suggesting that rifampicin shows strong brain protective effects in preclinical models of Alzheimer's Disease we also have provided substantial clinical evidence for the neuroprotective and pro-cognitive effects of rifampicin...
January 8, 2018: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/29313577/a-randomized-controlled-phase-iii-clinical-trial-to-evaluate-the-efficacy-and-tolerability-of-risorine-with-conventional-rifampicin-in-the-treatment-of-newly-diagnosed-pulmonary-tuberculosis-patients
#9
Naresh Patel, K Jagannath, Agam Vora, Mukesh Patel, Anand Patel
Background: The overall goals for treatment of Tuberculosis (TB) are to cure individual patient and to minimize the transmission of Mycobacterium tuberculosis. At the time of study conduction, the standard treatment for newly diagnosed tuberculosis patients consisted of an intensive phase for two months with four drugs (HRZE), followed by continuation phase for four months with two drugs (HR). Rifampicin, which is very effective against Mycobacterium tuberculosis, in both the phases of treatment, has certain concerns, which includes, decreased bioavailability with chronic use and hepatotoxicity...
September 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29311276/species-specific-interactions-of-arr-with-rplk-mediate-stringent-response-in-bacteria
#10
Priyanka Agrawal, Rajagopal Varada, Shivjee Sah, Souvik Bhattacharyya, Umesh Varshney
Bacteria respond to stressful growth conditions through a conserved phenomenon of 'stringent response' mediated by synthesis of stress alarmones, ppGpp or pppGpp [referred to as (p)ppGpp]. The (p)ppGpp synthesis is known to occur by ribosome associated RelA. In addition, a dual function protein SpoT (with both the synthetase and hydrolase activities) maintains (p)ppGpp homeostasis. The presence of (p)ppGpp is also known to contribute to antibiotic resistance in bacteria. Mycobacterium smegmatis possesses Arr, which inactivates rifampicin by its ADP-ribosylation...
January 8, 2018: Journal of Bacteriology
https://www.readbyqxmd.com/read/29304832/dalbavancin-treatment-in-a-deep-sternal-wound-mrsa-infection-after-coronary-artery-bypass-surgery-a-case-report
#11
Aneta Guzek, Grzegorz Suwalski, Dariusz Tomaszewski, Zbigniew Rybicki
BACKGROUND: A deep sternal wound infection (DSWI) can become a severe complication after cardiac surgery, with in-hospital mortality rates reaching up to 35%. Staphylococci, particularly methicillin resistant Staphylococcus aureus (MRSA), play important roles in its etiology. CASE PRESENTATION: This case report presents a patient who underwent coronary artery bypass surgery, and suffered postoperatively from a DSWI caused by MRSA. The pathogen was susceptible to vancomycin and rifampicin in vitro; however, this therapy was clinically ineffective...
January 5, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29303284/-current-approach-to-diagnostics-treatment-and-prevention-of-tuberculosis
#12
Martina Vašáková
Tuberculosis is world-wide spread infectious disease with persistant high incidence, mainly in the densely populated countries with low income. Czech Republic belongs to the countries with highly efficient control of tuberculosis and continuously decreasing incidence of the disease. High-risk population for tuberculosis in the Czech Republic are the homeless people, who together with migrants from the countries with high incidence of tuberculosis represent reservoir of infection for our population. Treatment of tuberculosis is long-term, combined and controlled...
2018: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/29300156/comparative-activity-of-tedizolid-and-glycopeptide-combination-therapies-for-the-treatment-of-staphylococcus-aureus-infections-an-in-vitro-and-in-vivo-evaluation-against-strains-with-reduced-susceptibility-to-glycopeptides
#13
J W Betts, H F Abdul Momin, L M Phee, D W Wareham
PURPOSE: Glycopeptides are widely used for the treatment of meticillin-resistant Staphylococcus aureus (MRSA) infections. Although difficult to detect, isolates with reduced (GISA), hetero (hGISA) or complete (GRSA) resistance to glycopeptides are increasingly reported. Optimal therapy for such strains is unknown. We compared the in vitro and in vivo activity of tedizolid (TED), a recently licensed oxazolidonone, with vancomycin (VAN) and teicoplanin (TEIC) combined with fusidic acid (FD) or rifampicin (RIF) against S...
January 4, 2018: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29298757/vitamin-c-potentiates-the-killing-of-mycobacterium-tuberculosis-by-the-first-line-tuberculosis-drugs-isoniazid-and-rifampicin-in-mice
#14
Catherine Vilchèze, John Kim, William R Jacobs
The treatment of drug-susceptible tuberculosis (TB) is long and cumbersome. Mismanagement of TB treatment can lead to the emergence of drug resistance in patients, so shortening the treatment duration could significantly improve TB chemotherapy and prevent the development of drug resistance. We had previously discovered that high concentrations of vitamin C sterilize cultures of drug-susceptible and drug-resistant Mycobacterium tuberculosis Here, we tested sub-inhibitory concentration of vitamin C in combination with TB drugs against M...
January 3, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29297423/meropenem-clavulanate-for-drug-resistant-tuberculosis-a-follow-up-of-relapse-free-cases
#15
M C Payen, I Muylle, O Vandenberg, V Mathys, M Delforge, S Van den Wijngaert, N Clumeck, S De Wit
BACKGROUND: Extensively drug-resistant tuberculosis (XDR-TB), defined as TB caused by a Mycobacterium strain resistant to at least rifampicin, isoniazid, any fluoroquinolone and one of the injectable anti-tuberculosis drugs, remains a worldwide public health threat. Among repurposed drugs empirically used for XDR-TB cases, carbapenems have been studied in vitro and in animal models, with encouraging results. However, only short-term follow-up data from clinical studies are currently available...
January 1, 2018: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29296643/successful-combined-antibiotic-therapy-with-oral-clindamycin-and-oral-rifampicin-for-pyoderma-gangrenosum-in-patient-with-pash-syndrome
#16
Marie Lamiaux, Fadia Dabouz, Maud Wantz, Damien Lebas, Audrey Lasek, Domitille Courivaud, Philippe Modiano
No abstract text is available yet for this article.
January 2018: JAAD Case Reports
https://www.readbyqxmd.com/read/29289558/retrospective-active-case-finding-in-cambodia-an-innovative-approach-to-leprosy-control-in-a-low-endemic-country
#17
Thomas Fürst, Arielle Cavaliero, Sambath Lay, Chrystel Dayer, Chan Saren, Ajda Smrekar, So Visal, Tanja Barth-Jaeggi, Peter Steinmann
Currently, leprosy control relies on the clinical diagnosis of leprosy and the subsequent administration of multidrug therapy (MDT). However, many health workers are not familiar with the cardinal signs of leprosy, particularly in low-endemic settings including Cambodia. In response, a new approach to early diagnosis was developed in the country, namely retrospective active case finding (RACF) through small mobile teams. In the frame of RACF, previously diagnosed leprosy patients are traced and their contacts screened through "drives"...
December 28, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29288283/associations-between-mycobacterium-tuberculosis-beijing-genotype-and-drug-resistance-to-four-first-line-drugs-a-survey-in-china
#18
Haican Liu, Yuanyuan Zhang, Zhiguang Liu, Jinghua Liu, Yolande Hauck, Jiao Liu, Haiyan Dong, Jie Liu, Xiuqin Zhao, Bing Lu, Yi Jiang, Gilles Vergnaud, Christine Pourcel, Kanglin Wan
Investigations on the genetic diversity of Mycobacterium tuberculosis in China have shown that Beijing genotype strains play a dominant role. To study the association between the M. tuberculosis Beijing genotype and the drug-resistance phenotype, 1286 M. tuberculosis clinical isolates together with epidemiological and clinical information of patients were collected from the center for tuberculosis (TB) prevention and control or TB hospitals in Beijing municipality and nine provinces or autonomous regions in China...
December 29, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/29287806/antibiotic-susceptibility-of-259-listeria-monocytogenes-strains-isolated-from-food-food-processing-plants-and-human-samples-in-germany
#19
Matthias Noll, Sylvia Kleta, Sascha Al Dahouk
BACKGROUND: The objective of this study was to evaluate the susceptibility of 259 Listeria monocytogenes strains isolated from food and food-processing environments and patient samples in Germany to 14 antibiotics widely used in veterinary and human medicine. L. monocytogenes strains were isolated mainly from milk and milk products and classified according to their molecular serotypes IIa (n=112), IIb (n=41), IIc (n=36), IVa (n=1), IVb (n=66), and IVb-v1 (n=3). METHODS: Susceptibility tests were performed by using the automated 96-well based microdilution system Micronaut-S...
December 26, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/29285606/the-formation-of-estrogen-like-tamoxifen-metabolites-and-their-influence-on-enzyme-activity-and-gene-expression-of-adme-genes
#20
Janina Johänning, Patrick Kröner, Maria Thomas, Ulrich M Zanger, Astrid Nörenberg, Michel Eichelbaum, Matthias Schwab, Hiltrud Brauch, Werner Schroth, Thomas E Mürdter
Tamoxifen, a standard therapy for breast cancer, is metabolized to compounds with anti-estrogenic as well as estrogen-like action at the estrogen receptor. Little is known about the formation of estrogen-like metabolites and their biological impact. Thus, we characterized the estrogen-like metabolites tamoxifen bisphenol and metabolite E for their metabolic pathway and their influence on cytochrome P450 activity and ADME gene expression. The formation of tamoxifen bisphenol and metabolite E was studied in human liver microsomes and Supersomes™...
December 28, 2017: Archives of Toxicology
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