Rudolf Bauer

Rudolf Bauer
Karl-Franzens-Universität Graz | KFU Graz · Institute of Pharmaceutical Sciences

Univ.-Prof. Dr.

About

710
Publications
138,134
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15,425
Citations
Additional affiliations
January 2010 - present
Medizinische Universität Graz
January 2004 - December 2011
Universität Innsbruck
March 2002 - present
Karl-Franzens-Universität Graz

Publications

Publications (710)
Conference Paper
The use of mushrooms in human diet is reflected in their high nutritional value and their positive impact on human health. The edible mushroom species Volvopluteus gloiocephalus (Fr.) Gillet and Fistulina hepatica (Schaeff.) With., collected and determined in Novi Sad (Serbia) locality, have been selected for this study. This research sought to qua...
Article
The unambiguous identification of plant material is a prerequisite of rational phytotherapy. Misidentification can even cause serious health problems, as in the case of the Chinese medicinal herb Zicao. Commercial material labelled “Zicao” may be derived from the roots of Arnebia euchroma (ruan zicao), Lithospermum erythrorhizon (ying zicao), or On...
Article
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Background Although chondrosarcoma is the second most common primary malignant bone tumor, treatment options are limited due to its extensive resistance to a chemo- and radiation therapy. Since shikonin has shown potent anticancer activity in various types of cancer cells, it represents a promising compound for the development of a new therapeutic...
Article
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Lunaria annua L. (Brassicaceae) in contrast to its name is a biennial plant native to the Balkans and southwest Asia. This research aimed to evaluate the composition of phenolic compounds (total phenolics, phenolic acids, flavonoids, flavonols, and gallotannins) of methanolic extracts of the aboveground parts (LAA) and roots (LAR) of L. annua, as w...
Article
Coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2, continues to be a global concern. Traditional Chinese medicines (TCMs) are an important element of the fight against COVID-19 in China. The combined application of TCMs and conventional medicines in the treatment of COVID-19 has achieved beneficial r...
Article
Background Osteoarthritis (OA) is one of the most common joint disorders and is characterized by the degeneration and loss of articular cartilage with chronic arthritis of the joint edge and subchondral bone. OA is causally influenced by several factors, including age, gender, familial susceptibility, as well as local biomechanics, cartilage cell a...
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Melanoma is a complex and heterogenous disease, displays the deadliest form of skin cancer, and accounts for approx. 80% of all skin cancer deaths. In this study, we reported on the synthesis and pharmacological effects of a novel shikonin derivative (SK119), which is active in a nano-molar range and exhibits several promising in vitro effects in d...
Article
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This study centered on detecting potentially anti-inflammatory active constituents in ethanolic extracts of Chinese Lonicera species by taking an UHPLC-HRMS-based metabolite profiling approach. Extracts from eight different Lonicera species were subjected to both UHPLC-HRMS analysis and to pharmacological testing in three different cellular inflamm...
Article
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Osteoarthritis (OA) is the most common joint disorder and is characterized by the degeneration of articular cartilage. To develop new therapeutic approaches, we investigated the effect of shikonin derivatives on inflammation, MMP expression, and the regulation of MAPK signaling in human healthy (HC) and OA chondrocytes (pCH-OA). Viability was analy...
Article
Respiratory viruses pose a significant threat to global health. They initially infect the naso‐ and oropharyngeal regions, where they amplify, cause symptoms, and may also be transmitted to new hosts. Preventing initial infection or reducing viral loads upon infection might soothe symptoms, prevent dissemination into the lower airways, or transmiss...
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Ethnopharmacological relevance Medicinal properties of hyssop have been used in traditional medicine since ancient times, inter alia, in diseases/conditions with an inherent inflammatory process. Aim of the study: Accordingly, the aim of this study was to investigate the anti-inflammatory properties of hyssop herb preparations (essential oil and me...
Article
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Background The COVID-19 pandemic will continue to threaten our health care systems in the next years. In addition to vaccination there is a need for effective tools for prevention and treatment. Products from natural sources, like standardized plant extracts offer a wide range of antiviral effects and possible applications. Purpose The aim of this...
Article
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Garcinia picrorhiza, a woody plant native to Sulawesi and Maluku Islands, Indonesia, has been traditionally used as a wound healing ointment. In our continuous search for bioactive compounds from this plant, 15 phenolic compounds were isolated from its stem bark, including a previously undescribed dihydroisocoumarin, 2′-hydroxyannulatomarin, and tw...
Article
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The reaction of 2,3-dihydropyridines with sulfonyl halides surprisingly yielded open chain dienes with sulfonylimine structure. The products were specific out of several possible isomers and, therefore, a separation of isomers was not necessary. All new compounds were characterized using FT-IR spectroscopy, HRMS, and NMR spectroscopy. A bicyclic by...
Article
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Sesuvium sesuvioides(Fenzl) Verdc. (Aizoaceae) is commonly known as BarriUlwaiti and used in folklore remedies; i.e. arthritis, gout, epistaxis, hemorrhage, smallpox, chickenpox, cold and flu by the local practitioners in the Cholistan desert. In the current study, fresh and dried plant material was examined macroscopically and microscopically. Tra...
Article
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Context: Ginkgo biloba L. (Ginkgoaceae) leaf extract is one of the most frequently sold herbal extracts. There have been reports on poor quality and adulteration of ginkgo leaf extracts or the powdered plant material with extracts or powder of Styphnolobium japonicum (L.) Schott (Fabaceae) (syn. Sophora japonica L.) fruits, which is rich in flavone...
Article
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Melanoma is the deadliest form of skin cancer and accounts for about three quarters of all skin cancer deaths. Especially at an advanced stage, its treatment is challenging, and survival rates are very low. In previous studies, we showed that the constituents of the roots of Onosma paniculata as well as a synthetic derivative of the most active con...
Article
Natural products and their structural analogues have historically made a major contribution to pharmacotherapy, especially for cancer and infectious diseases. Nevertheless, natural products also present challenges for drug discovery, such as technical barriers to screening, isolation, characterization and optimization, which contributed to a declin...
Article
Objective: Gegen Qinlian decoction (GQD) is a classical traditional Chinese medicine formulation which has been used for almost 2000 years. At Guang'anmen Hospital, Beijing, a modified GQD version (mGQD) with seven instead of four herbal ingredients has been applied to treat Type 2 diabetes. Quality control is a crucial prerequisite for the therape...
Article
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In times of health crisis, including the current COVID‐19 pandemic, the potential benefit of botanical drugs and supplements emerges as a focus of attention, although controversial efficacy claims are rightly a concern. Phytotherapy has an established role in everyday self‐care and health care, but, since botanical preparations contain many chemica...
Preprint
Full-text available
In times of health crisis, including the current COVID-19 pandemic, the potential benefit of botanical drugs and supplements emerges as a focus of attention, although controversial efficacy claims are rightly a concern. Phytotherapy has an established role in everyday selfcare and health care, and since botanical preparations contain many chemical...
Article
New 1,3 dibenzyl -tetrahydropyridinylidene ammonium salts have been prepared from unsubstituted or N-benzylated tetrahydropyridinylidene ammonium salts. The antiplasmodial and antitrypanosomal activities as well as their cytotoxic effects were determined using microplate assays. In addition, their activities against two gram positive and two gram n...
Article
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Carvotacetones (1-7) isolated from Sphaeranthus africanus were screened for their antimycobacterial and efflux pump (EP) inhibitory potential against the mycobacterial model strains Mycobacterium smegmatis mc 2 155, Mycobacterium aurum ATCC 23366, and Mycobacterium bovis BCG ATCC 35734. The minimum inhibitory concentrations (MICs) of the carvotacet...
Article
Eight new polyprenylated benzoylphloroglucinol derivatives (1–8) and four known analogues (9–12) were isolated from the stem bark of Garcinia picrorhiza. Their structures were determined by spectroscopic data analysis (1D and 2D NMR and HRESIMS), and the absolute configurations were established by single-crystal X-ray diffraction combined with expe...
Article
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Background : Periploca sepium is traditionally used in Chinese medicine to treat particularly rheumatic disorders and as a tonic. Periplocin was found as the most cytotoxic compound of its root bark and induced death receptor mediated apoptosis in liposarcoma cells. Sarcomas are a rare type of cancer with only a few treatment options. The five-year...
Article
As viral infections are an increasing threat to human societies, the need for new therapeutic strategies is becoming even more obvious. As no vaccine is available for COVID-19, the development of directly acting antiviral agents and preventive strategies have to be considered. Nature provides a huge reservoir of anti-infectious compounds, from whic...
Article
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Background STW 5 is a fixed herbal combination containing extracts from nine medicinal plants: bitter candytuft, greater celandine, garden angelica roots, lemon balm leaves, peppermint leaves, caraway fruits, licorice roots, chamomile flowers, and milk thistle fruit. STW 5 has known beneficial effects on functional dyspepsia and irritable bowel syn...
Article
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Oplopanax horridus and Panax ginseng are members of the plant family Araliaceae, which is rich in structurally diverse polyacetylenes. In this work, we isolated and determined structures of 23 aliphatic C17 and C18 polyacetylenes, of which five are new compounds. Polyacetylenes have a suitable scaffold for binding to PPARγ, a ligand-activated trans...
Article
Blackstonia perfoliata (L.) Huds. is known as a highly bitter secoiridoid glycosides-containing plant and as a possible substitute for some Gentianaceae plants in herbal preparations. Nevertheless, its bioactive properties are still unknown. The present study aimed to characterize both, secoiridoid glycosides and phenolic constituents, and to inves...
Article
Melanoma is the most aggressive form of skin cancer, with high metastasis rates and poor prognosis. Survival rates and possible therapies depend on the state of the tumor and its mutational profile. BRAF and NRAS are the most frequent driver mutations. Currently, there is no efficient therapy for NRAS-mutated or late-stage melanoma. In this study,...
Article
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In order to identify active constituents and to gain some information regarding their mode of action, extracts from leaves of Epipremnum pinnatum were tested for their ability to inhibit inflammatory gene expression in endothelial- and monocyte-like cells (HUVECtert and THP-1, respectively). Bioactivity-guided fractionation using expression of PTGS...
Article
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Biotechnology is an evolving research field that covers a broad range of topics. Here we aimed to evaluate the latest research literature, to identify prominent research themes, major contributors in terms of institutions, countries/regions, and journals. The Web of Science Core Collection online database was searched to retrieve biotechnology arti...
Article
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Within non-communicable diseases, chronic inflammatory conditions represent one of the biggest challenges for modern medicine. Traditional Chinese Medicine (TCM) has been practiced over centuries and has accumulated tremendous empirical knowledge on the treatment of such diseases. Huangqi Jianzhong Tang (HQJZT) is a famous TCM herbal formula compos...
Article
Full-text available
Within non-communicable diseases, chronic inflammatory conditions represent one of the biggest challenges for modern medicine. Traditional Chinese Medicine (TCM) has been practiced over centuries and has accumulated tremendous empirical knowledge on the treatment of such diseases. Huangqi Jianzhong Tang (HQJZT) is a famous TCM herbal formula compos...
Article
Zusammenfassung Die drei Sonnenhutarten Echinacea angustifolia, E. pallida und E. purpurea werden als Ausgangsmaterial für die Produktion phytotherapeutischer und homöopathischer Zubereitungen genutzt, welche als unspezifische Immunstimulanzien Einsatz finden. Dabei sind vermutlich sowohl nieder- als auch hochmolekulare Inhaltsstoffe an der Wirkung...
Article
Ethnopharmacological relevance: Many medicinal plants have been traditionally used for the treatment of gastrointestinal disorders. According to the monographs published by the Committee on Herbal Medicinal Products (HMPC) at the European Medicines Agency, currently 44 medicinal plants are recommended in the European Union for the treatment of gas...
Article
Coleonema album is a South African shrub which is used as an anti-inflammatory. A methanolic leaf extract of C. album was here tested in vitro in various anti-inflammatory assays to establish a possible mode of action, as well as for cytotoxicity. The C. album extract did not change the signaling of anti-inflammatory activity in vitro. The extract...
Poster
Full-text available
Investigation of anti-inflammatory activity of constituents from Sphaeranthus africanus
Article
Background Sphaeranthus africanus has been used in traditional Vietnamese medicine to treat sore throat, and to relieve pain and swelling. However, the anti-inflammatory activity of this plant had not yet been investigated. Previously, we isolated five carvotacetones (1-5) from this plant that displayed cytotoxicity against several cancer cell line...