@article{UeberschaarGoebelerKneitz2020,
  author    = {Ueberschaar, Simon and Goebeler, Matthias and Kneitz, Hermann},
  title     = {CD10-Positive Cutaneous PEComa: An Extremely Rare Skin Tumour},
  series = {Case Reports in Dermatology},
  volume    = {12},
  journal   = {Case Reports in Dermatology},
  doi       = {10.1159/000510718},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-236151},
  pages     = {192-198},
  year      = {2020},
  abstract  = {We here present the case of a 67-year-old woman with a history of a slowly progressive, polypous nodule on her left wrist. The lesion was excised, and the histological analysis revealed a clear cell tumour that was relatively sharply demarked from the surrounding tissue extending into the subcutaneous tissue. The tumour showed a characteristic trabecular pattern in which the tumour cells were arranged around numerous vessels. The neoplastic cells had a predominantly epithelioid shape, granular eosinophilic to clear cytoplasm and prominent centrally located nucleoli. The histological differential diagnosis included a metastatic clear-cell renal cell carcinoma and a primary cutaneous perivascular epithelioid cell tumour (PEComa). Immunohistochemically, the tumour cells revealed homogenous expression of HMB-45, MiTF and CD10, whereas MART-1 and S100 were negative. Antibodies against actin marked the trabecularly arranged vessels, and the neoplastic cells yielded a patchy positivity against actin and desmin. Additional immunohistochemical stains against pan-cytokeratin, CAIX, PAX-8 and EMA were negative. Based on the morphologic and immunophenotypic findings, the histological diagnosis of a CD10-positive cutaneous PEComa was made.},
  language  = {en}
}
@article{AbimannanSumathiKrishnarajasekharetal.2019,
  author    = {Abimannan, Nagarajan and Sumathi, G. and Krishnarajasekhar, O. R. and Sinha, Bhanu and Krishnan, Padma},
  title     = {Clonal Clusters and Virulence Factors of Methicillin-Resistant \(Staphylococcus\) \(Aureus\): Evidence for Community-Acquired Methicillin-Resistant \(Staphylococcus\) \(Aureus\) Infiltration into Hospital Settings in Chennai, South India},
  series = {Indian Journal of Medical Microbiology},
  volume    = {37},
  journal   = {Indian Journal of Medical Microbiology},
  number    = {3},
  doi       = {10.4103/ijmm.IJMM_18_271},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-226963},
  pages     = {326-336},
  year      = {2019},
  abstract  = {Background and Objective: Staphylococcus aureus is one of the major pathogens of nosocomial infections as wells as community-acquired (CA) infections worldwide. So far, large-scale comprehensive molecular and epidemiological characterisation of S. aureus from very diverse settings has not been carried out in India. The objective of this study is to evaluate the molecular, epidemiological and virulence characteristics of S. aureus in both community and hospital settings in Chennai, southern India. Methods: S. aureus isolates were obtained from four different groups (a) healthy individuals from closed community settings, (b) inpatients from hospitals, (c) outpatients from hospitals, representing isolates of hospital-community interface and (d) HIV-infected patients to define isolates associated with the immunocompromised. Antibiotic susceptibility testing, multiplex polymerase chain reactions for detection of virulence and resistance determinants, molecular typing including Staphylococcal cassette chromosome mec (SCCmec) and agr typing, were carried out. Sequencing-based typing was done using spa and multilocus sequence typing (MLST) methods. Clonal complexes (CC) of hospital and CA methicillin-resistant S. aureus (MRSA) were identified and compared for virulence and resistance. Results and Conclusion: A total of 769 isolates of S. aureus isolates were studied. The prevalence of MRSA was found to be 7.17\%, 81.67\%, 58.33\% and 22.85\% for groups a, b, c and d, respectively. Of the four SCCmec types (I, III, IV and V) detected, SCCmec V was found to be predominant. Panton-Valentine leucocidin toxin genes were detected among MRSA isolates harbouring SCCmec IV and V. A total of 78 spa types were detected, t657 being the most prevalent. 13 MLST types belonging to 9 CC were detected. CC1 (ST-772, ST-1) and CC8 (ST238, ST368 and ST1208) were found to be predominant among MRSA. CA-MRSA isolates with SCCmec IV and V were isolated from all study groups including hospitalised patients and were found to be similar by molecular tools. This shows that CA MRSA has probably infiltrated into the hospital settings.},
  language  = {en}
}
@article{PlauthGeikowskiCichonetal.2016,
  author    = {Plauth, Annabell and Geikowski, Anne and Cichon, Susanne and Wowro, Sylvia J. and Liedgens, Linda and Rousseau, Morten and Weidner, Christopher and Fuhr, Luise and Kliem, Magdalena and Jenkins, Gail and Lotito, Silvina and Wainwright, Linda J. and Sauer, Sascha},
  title     = {Hormetic shifting of redox environment by pro-oxidative resveratrol protects cells against stress},
  series = {Free Radical Biology and Medicine},
  volume    = {99},
  journal   = {Free Radical Biology and Medicine},
  doi       = {10.1016/j.freeradbiomed.2016.08.006},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-187186},
  pages     = {608-622},
  year      = {2016},
  abstract  = {Resveratrol has gained tremendous interest owing to multiple reported health-beneficial effects. However, the underlying key mechanism of action of this natural product remained largely controversial. Here, we demonstrate that under physiologically relevant conditions major biological effects of resveratrol can be attributed to its generation of oxidation products such as reactive oxygen species (ROS). At low nontoxic concentrations (in general < 50 mu M), treatment with resveratrol increased viability in a set of representative cell models, whereas application of quenchers of ROS completely truncated these beneficial effects. Notably, resveratrol treatment led to mild, Nrf2-specific gene expression reprogramming. For example, in primary epidermal keratinocytes derived from human skin this coordinated process resulted in a 1.3-fold increase of endogenously generated glutathione (GSH) and subsequently in a quantitative reduction of the cellular redox environment by 2.61 mV mmol GSH per g protein. After induction of oxidative stress by using 0.78\% (v/v) ethanol, endogenous generation of ROS was consequently reduced by 24\% in resveratrol pre-treated cells. In contrast to the common perception that resveratrol acts mainly as a chemical antioxidant or as a target protein-specific ligand, we propose that the cellular response to resveratrol treatment is essentially based on oxidative triggering. In physiological microenvironments this molecular training can lead to hormetic shifting of cellular defense towards a more reductive state to improve physiological resilience to oxidative stress.},
  language  = {en}
}