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Biomedicines, Volume 6, Issue 3

September 2018 - 21 articles

Cover Story: Spider venoms are rich in insecticidal peptides, but as venoms are usually injected, there has been no evolutionary pressure to produce venom peptides with oral activity. Nevertheless, some orally active venom peptides were recently reported, although their oral activity was significantly lower than by injection. Therefore, we systematically evaluated several chemical strategies to increase the oral potency of the insecticidal spider-venom peptide ω-HXTX-Hv1a (Hv1a). N- to C-terminal cyclisation and replacement of disulfide by diselenide bonds failed to improve oral activity. Cyclization of Hv1a dramatically reduced the translocation of Hv1a across the insect midgut, highlighting the importance of bioavailability for oral activity. Hadronyche versuta photo courtesy of Mike Gray (Australian Museum) View the paper here.
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Articles (21)

  • Article
  • Open Access
9 Citations
7,633 Views
14 Pages

Cancer treatment with specific chemotherapeutic agents has been well documented to have an adverse impact on female fertility leading to premature ovarian failure (POF). The objective of this study is to investigate if chemotherapeutic induced POF ca...

  • Article
  • Open Access
33 Citations
6,399 Views
9 Pages

Aflibercept Nanoformulation Inhibits VEGF Expression in Ocular In Vitro Model: A Preliminary Report

  • Shannon J. Kelly,
  • Anjali Hirani,
  • Vishal Shahidadpury,
  • Aum Solanki,
  • Kathleen Halasz,
  • Sheeba Varghese Gupta,
  • Brian Madow and
  • Vijaykumar Sutariya

Age-related macular degeneration (AMD) is one of the leading causes of blindness in the United States, affecting approximately 11 million patients. AMD is caused primarily by an upregulation of vascular endothelial growth factor (VEGF). In recent yea...

  • Review
  • Open Access
891 Citations
47,820 Views
20 Pages

Resveratrol: A Double-Edged Sword in Health Benefits

  • Bahare Salehi,
  • Abhay Prakash Mishra,
  • Manisha Nigam,
  • Bilge Sener,
  • Mehtap Kilic,
  • Mehdi Sharifi-Rad,
  • Patrick Valere Tsouh Fokou,
  • Natália Martins and
  • Javad Sharifi-Rad

Resveratrol (3,5,4′-trihydroxy-trans-stilbene) belongs to polyphenols’ stilbenoids group, possessing two phenol rings linked to each other by an ethylene bridge. This natural polyphenol has been detected in more than 70 plant species, esp...

  • Article
  • Open Access
14 Citations
6,082 Views
16 Pages

Evaluation of Chemical Strategies for Improving the Stability and Oral Toxicity of Insecticidal Peptides

  • Volker Herzig,
  • Aline Dantas De Araujo,
  • Kathryn P. Greenwood,
  • Yanni K.-Y. Chin,
  • Monique J. Windley,
  • Youmie Chong,
  • Markus Muttenthaler,
  • Mehdi Mobli,
  • Neil Audsley and
  • Graham M. Nicholson
  • + 2 authors

Spider venoms are a rich source of insecticidal peptide toxins. Their development as bioinsecticides has, however, been hampered due to concerns about potential lack of stability and oral bioactivity. We therefore systematically evaluated several syn...

  • Review
  • Open Access
40 Citations
6,801 Views
11 Pages

Contributions of Thyroid Hormone to Cancer Metastasis

  • Shaker A. Mousa,
  • Gennadi V. Glinsky,
  • Hung-Yun Lin,
  • Osnat Ashur-Fabian,
  • Aleck Hercbergs,
  • Kelly A. Keating and
  • Paul J. Davis

Acting at a cell surface receptor on the extracellular domain of integrin αvβ3, thyroid hormone analogues regulate downstream the expression of a large panel of genes relevant to cancer cell proliferation, to cancer cell survival pathways,...

  • Article
  • Open Access
9 Citations
5,535 Views
14 Pages

Advanced glycation end products (AGEs) represent a set of molecules that contribute directly to the initiation and aggravation of diseases associated with ageing. AGEs are produced by the reaction between reducing sugars (or α-dicarbonyl compou...

  • Review
  • Open Access
9 Citations
5,926 Views
18 Pages

Biomarkers refer to a plethora of biological characteristics that can be quantified to facilitate cancer diagnosis, forecast the prognosis of disease, and predict a response to treatment. The identification of objective biomarkers is among the most c...

  • Review
  • Open Access
32 Citations
7,981 Views
21 Pages

Emerging Medical Treatments for Meningioma in the Molecular Era

  • Fares Nigim,
  • Hiroaki Wakimoto,
  • Ekkehard M. Kasper,
  • Linda Ackermans and
  • Yasin Temel

Meningiomas are the most common type of primary central nervous system tumors. Approximately, 80% of meningiomas are classified by the World Health Organization (WHO) as grade I, and 20% of these tumors are grade II and III, considered high-grade men...

  • Article
  • Open Access
16 Citations
5,389 Views
12 Pages

Numerous studies provide robust evidence for a protective effect of red wine against many diseases. This bioactivity has been mainly associated with phenolic fractions of wines. However, the health effects of melanoidins in red sweet wines has been i...

  • Review
  • Open Access
100 Citations
18,651 Views
14 Pages

Relapsing Polychondritis: An Updated Review

  • Francesco Borgia,
  • Roberta Giuffrida,
  • Fabrizio Guarneri and
  • Serafinella P. Cannavò

Relapsing polychondritis is an immune-mediated systemic disease characterized by recurrent episodes of inflammation of cartilaginous and proteoglycan-rich tissues, resulting in progressive anatomical deformation and functional impairment of the invol...

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Biomedicines - ISSN 2227-9059