Olivibacter flavus sp. nov., a novel endophytic bacterium isolated from the root of Camellia sinensis

Abstract

A novel Gram-negative rod, endophytic bacterium, designated strain TMCC 8258^T, was isolated from the root of Camellia sinensis collected from Puer, south-west China. Comparative 16S rRNA gene sequence analysis showed that the strain belongs to the family Sphingobacteriaceae and a neighbour-joining phylogenetic tree suggested that strain TMCC 8258^T formed a cluster with the type strain of Olivibacter ginsengisoli (showed the highest 16S rRNA gene sequence similarity of 95.8%). Chemotaxonomic data [major fatty acid iso-C_15:0, summed feature 3 (C_16:1ω7c and/or C_16:1ω6c), iso-C_17:0 3-OH and major respiratory quinone MK-7] confirmed the affiliation of strain TMCC 8258^T to the genus Olivibacter. The G + C content was 39.1 mol %. The results of the phylogenetic analysis, together with the physiological, morphological and biochemical tests, suggested that strain TMCC 8258^T should be classified as representing a novel species of the genus Olivibacter, for which the name Olivibacter flavus is proposed. The type strain is TMCC 8258^T (=CGMCC 1.16141 = KCTC 42683).

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Chirped self-similar optical pulses in tapered centrosymmetric nonlinear waveguides doped with resonant impurities

Abstract

Exact chirped self-similar optical pulses propagating in tapered centrosymmetric nonlinear waveguides doped with resonant impurities are reported. The propagation behaviors of the pulses are studied by tailoring of the tapering function. Numerical simulations and stability analysis reveal that the tapering can be used to postpone the wave dispersion and the addition of a small cubic self-focusing term to the governing equation could stabilize the chirped bright pulses. An example of possible experimental protocol that may generate the pulses in realistic waveguides is given. The obtained chirped self-similar optical pulses are particularly useful in the design of amplifying or attenuating pulse compressors for chirped solitary waves in tapered centrosymmetric nonlinear waveguides doped with resonant impurities.

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Patterns of Care Related to Post-Operative Radiotherapy for Patients with Prostate Cancer among Canadian Radiation Oncologists and Urologists

Abstract

The American Society for Radiation Oncology (ASTRO) and American Urological Association (AUA) developed post-prostatectomy radiotherapy (RT) guidelines to aid patient counseling on adjuvant (ART) and salvage radiotherapy (SRT). Our study compared how aware and compliant Canadian radiation oncologists and urologists are to these guidelines. Our online survey was distributed through the Canadian Association of Radiation Oncology (CARO) and Canadian Urology Association (CUA) to radiation oncologists and urologists that treat prostate cancer. We used Wilcoxon rank-sum test and Chi-square test to compare radiation oncologists and urologists. P values for significant findings are reported. A total of 128 participants responded the survey, 52 radiation oncologists, and 76 urologists. The majority (82%) of radiation oncologists had read these guidelines, compared to only 49% of urologists (p < 0.001). Radiation oncologists were more likely to recommend ART >50% for adverse pathological findings post-radical prostatectomy compared to urologists (76 vs. 51%, p = 0.011). Urologists were more likely to monitor their patient's PSA level post-prostatectomy compared to radiation oncologists (93 vs. 77%, p = 0.016). Post-thematic analysis of open-ended questions revealed that urologists rarely refer patients to radiation oncologists for ART, with radiation oncologists confirming that they rarely receive referrals. This study demonstrates the low compliance to ASTRO/AUA guidelines. While radiation oncologists were more aware and compliant to guidelines, urologists were significantly more likely to monitor their patient's PSA. This study highlighted the need for better communication between urologists and radiation oncologists, especially in referrals for ART, to facilitate treatment delivery that is concordant with ASTRO/AUA guidelines.

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Efficient schemes for deterministic joint remote preparation of an arbitrary four-qubit W-type entangled state

Abstract

We present three schemes for the joint remote state preparation (JRSP) of an arbitrary four-qubit W-type entangled state with complex coefficients via four and two three-qubit GHZ states as the quantum channel. In these schemes, two senders (or N senders) share the original state which they wish to help the receiver to remotely prepare. To complete the JRSP schemes, some novel sets of mutually orthogonal basis vectors are introduced. It is shown that, only if two senders (or N senders) collaborate with each other, and perform projective measurements under suitable measuring basis on their own qubits, the receiver can reconstruct the original state by means of some appropriate unitary operations. It is shown that, in all our schemes, the total success probability of the JRSP can reach 1. Specially, compared with the first scheme in our paper, the entanglement resource in the second scheme can be reduced. This means that the scheme is more efficient and economical.

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Hepatic progenitor cell expansion in early-stage nonalcoholic steatohepatitis: evidence from immunohistochemistry and immunoelectron microscopy of matrix metalloproteinase-1

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Evidenz der Kompressionstherapie

Zusammenfassung

Hintergrund

Der Einsatz von medizinischer Kompressionstherapie in der Therapie phlebologischer Krankheitsbilder findet breite Anwendung. Mehrlagen- und Mehrkomponentenkompressionsbandagen und medizinische Kompressionsstrümpfe bewirken die Entstauung der Extremität und bessern die klinische Symptomatik. Es wird die Evidenz für den Einsatz der medizinischen Kompressionstherapie bei chronischer venöser Insuffizienz, bei entzündlichen Dermatosen und nach phlebochirurgischen Eingriffen und Interventionen aufgezeigt.

Material und Methoden

Die Übersichtsarbeit gibt eine systemische Darstellung des evidenzbasierten Einsatzes von Kompression. Aktuelle Literatur, insbesondere Leitlinien wurden durchsucht und die Indikationen für die Kompressionstherapie dargestellt.

Ergebnisse

Es besteht eine hohe Evidenz in der Therapie des Ulcus cruris venosum und in der Prophylaxe des Ulkusrezidivs. Der Einsatz nach interventionellen und operativen Eingriffen am Venensystem ist gängige Praxis, die Wirksamkeit kann jedoch nicht durch Studien belegt werden. Ebenso auf Empirie, nicht durch Studien untermauert, basiert die Anwendung der Kompression bei kutanen entzündlichen Erkrankungen wie Erythema nodosum, Pyoderma gangraenosum, Necrobiosis lipoidica, kutane leukozytoklastische Angiitis und Psoriasis der Extremitäten.

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Spezifische Indikationen zur Schaumsklerosierung

Zusammenfassung

Hintergrund

Die Schaumsklerosierungstherapie ist eine etablierte Methode zur Ausschaltung von Varizen unterschiedlichsten Kalibers.

Methode

Zur Beantwortung der Frage, ob spezifische Indikationen zur Schaumsklerosierung formuliert werden können, erfolgte eine Sichtung der Literatur.

Ergebnisse

Als spezifische Indikationen zur Schaumsklerosierung wurden die Behandlung von periulzerösen, pudendalen, rupturgefährdeten Varizen, Rezidivvarizen, Varizen bei geriatrischen Patienten und die Sklerosierung von Seromen detektiert.

Schlussfolgerung

Die Schaumsklerosierung gilt in einigen Fällen als Therapie der Wahl und stellt eine sichere und effiziente Therapieform dar.

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