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Topic Review
Cisd2 in Aging
Cisd2 (CDGSH Iron Sulfur Domain 2) is an oxidative stress-sensitive gene, the expression of which is able to prolong the lifespan in mice.
  • 954
  • 14 Jan 2021
Topic Review
Pseudomonas Lipopeptides
The Pseudomonas genus is ubiquitous and comprises species which are well known phytopathogens, such as P. syringae, or opportunistic human pathogens, such as P. aeruginosa, but also host members associated with water, soil and plant surfaces. Pseudomonas spp. are well adapted to growing in the rhizosphere and are well suited for biocontrol and growth promotion. Pseudomonas lipopeptides (Ps-LPs) play crucial roles in bacterial physiology, host–microbe interactions and plant disease control.
  • 953
  • 09 Feb 2022
Topic Review
The Role of Polysaccharide in Treating Neurodegenerative Disorders
The prevalence of neurodegenerative pathologies increases significantly with growing life expectancy. Neurodegenerative diseases including common diseases such as Alzheimer’s disease (AD) and Parkinson’s disease (PD) impose a global public health burden. In this context, natural products could play a leading role in the search for new drugs for the treatment of neurodegeneration. Of note, more than 80 percent of drugs are of natural origin. Natural polysaccharides (general formula of Cx(H2O)y; where x is number 200_2500) occurs naturally in living matter (on the contrary to polysaccharides combined artificially in the process of organic synthesis) and principally play structural and storage functions. Natural polysaccharides can be classified according to their origin, namely plants (e.g., starch, cellulose), algae (e.g., agar, alginates), animals (e.g., chitin, hyaluronic acid), bacteria (e.g., dextran, polylactosamine), and fungal (e.g., chitosan, elsinan). As one of the most widely distributed biomolecules in nature, natural polysaccharides have received considerable attention because of their diverse pharmacological activity as inhibitors of cellular processes, with their antioxidant, anticoagulant, antithrombotic and anticancer effects.
  • 953
  • 09 Feb 2022
Topic Review
Monitoring of Bone Health
Changing lifestyle and food habits are responsible for health problems, especially those related to bone in an aging population. Poor bone health has now become a serious matter of concern for many of us. In order to avoid serious consequences, the early prediction of symptoms and diagnosis of bone diseases have become the need of the hour. From this inspiration, the evolution of different bone health monitoring techniques and measurement methods practiced by researchers and healthcare companies has been discussed. This paper focuses on various types of bone diseases along with the modeling and remodeling phenomena of bones. The evolution of various diagnosis tests for bone health monitoring has been also discussed. Various types of bone turnover markers, their assessment techniques, and recent developments for the monitoring of biochemical markers to diagnose the bone conditions are highlighted. Then, the paper focuses on the potential assessment of the recent sensing techniques (physical sensors and biosensors) that are currently available for bone health monitoring. Considering the importance of electrochemical biosensors in terms of high sensitivity and reliability, specific attention has been given to the recent development of electrochemical biosensors and significance in real-time monitoring of bone health.
  • 948
  • 02 Nov 2020
Topic Review
Production of Fungal Xylanases
Lignocellulose is the most abundant and renewable plant resource and its utilisation for biotechnological applications has increased over the past few years. Xylan is the second most abundant carbohydrate in plant cell walls that is composed of β-1,4-d-xylopyranosyl units connected with glycosidic bonds. Fungal xylanases degrade this complex structure of xylan present in lignocellulosic substrates. Lignocellulosic biomass is the most economical substrate for the production of fungal xylanases. Fungal xylanases are produced in submerged and solid state fermentations using lignocellulosic biomass as substrates. Production of fungal xylanases is affected by physical and chemical parameters. The bioconversion of lignocellulosic biomass to industrially important products, i.e., xylooligosaccharides and biofuels, is possible via the application of fungal xylanases. These enzymes also play a key role in enhancing the nutrition and the bio-bleaching of paper and kraft pulp.
  • 945
  • 17 Feb 2024
Topic Review
On-Line Monitoring of Biological Parameters in Microalgal Bioprocesses
Microalgae are promising sources of fuels and other chemicals. To operate microalgal cultivations efficiently, process control based on monitoring of process variables is needed. On-line sensing has important advantages over off-line and other analytical and sensing methods in minimizing the measurement delay. Consequently, on-line, in-situ sensors are preferred. In this respect, optical sensors occupy a central position since they are versatile and readily implemented in an on-line format. In biotechnological processes, measurements are performed in three phases (gaseous, liquid and solid (biomass)), and monitored process variables can be classified as physical, chemical and biological. 
  • 944
  • 18 Feb 2022
Topic Review
Plant-Derived Antimicrobial Peptides
Food spoilage is a widespread issue brought on by the undesired growth of microbes in food products. Thousands of tons of usable food or food products are wasted every day due to rotting in different parts of the world. Several food preservation techniques are employed to prevent food from rotting, including the use of natural or manufactured chemicals or substances; however, the issue persists. One strategy for halting food deterioration is the use of plant-derived antimicrobial peptides (AMPs), which have been investigated for possible bioactivities against a range of human, plant, and food pathogens. The food industry may be able to benefit from the development of synthetic AMPs, produced from plants that have higher bioactivity, better stability, and decreased cytotoxicity as a means of food preservation.
  • 944
  • 02 Sep 2022
Topic Review
Renewable Feedstocks on PHA Production by Extremophiles
Polyhydroxyalkanoates (PHAs) are biodegradable polymers with immense potential in addressing the global plastic pollution crisis and advancing sustainable bioplastics production. Extremophiles are capable of utilizing a broad range of carbonaceous substrates for their growth and metabolism. Production of PHA using refined or pure sugar substrates leads to an increase in overall production cost (approximately 30–50%). Thus, the use of renewable feedstocks may reduce the overall cost, provided that the processing of such biomass to generate simple sugars should not be complex and/or expensive. Few studies have shown PHA production by extremophiles fed on renewable feedstocks such as those from agricultural wastes and industrial wastes. Among them, spent cooking oils, crude glycerol, and cheese whey are some of the important and low-cost substrates that come from various industries. In addition, it has been argued that the use of methane by thermophilic methanotrophs results in a reduction of up to 22% in PHA production cost. Other C1 carbon sources such as CO2 can also be used for PHA production. 
  • 943
  • 02 Feb 2024
Topic Review
Polysaccharide-Based Nanoparticles
Polysaccharide biomaterials have gained significant importance in the manufacture of nanoparticles used in colon-targeted drug delivery systems. These systems are a form of non-invasive oral therapy used in the treatment of various diseases. To achieve successful colonic delivery, the chemical, enzymatic and mucoadhesive barriers within the gastrointestinal (GI) tract must be analyzed.
  • 942
  • 20 Aug 2021
Topic Review
Biocontrol of Nosemosis in Honey Bees
Nosemosis is a disease triggered by the single-celled spore-forming fungi Nosema apis and Nosema ceranae, which can cause extensive colony losses in honey bees (Apis mellifera L.). Fumagillin is an effective antibiotic treatment to control nosemosis, but due to its toxicity, it is currently banned in many countries. Accordingly, in the beekeeping sector, there is a strong demand for alternative ecological methods that can be used for the prevention and therapeutic control of nosemosis in honey bee colonies. Numerous studies have shown that plant extracts, RNA interference (RNAi) and beneficial microbes could provide viable non-antibiotic alternatives.
  • 937
  • 27 May 2022
Topic Review
Peptide Stapling Applied to Antimicrobial Peptides
Antimicrobial peptides (AMPs) are considered a promising therapeutic approach against multi-drug resistant microorganisms. Besides their advantages, there are limitations to be overcome so that these molecules can become market competitive. One of the biggest limitations is proteolytic susceptibility, which could be overcome by structural modifications such as cyclization, especially for helix-constraining strategies. Over the years, many helix stabilization techniques have arisen, such as lactam-bridging, triazole-based, N-alkylation and all-hydrocarbon stapling. All-hydrocarbon stapling takes advantage of modified amino acid residues and olefinic cross-linking to constrain peptide helices. Despite being a well-established strategy and presenting efficient stability results, there are different limitations especially related to toxicity. In the research, some studies on stapled AMPs for antimicrobial usage are explored with the aim of understanding the future of these molecules as putative antimicrobial agents.
  • 937
  • 22 Sep 2023
Topic Review
Outer Membrane Vesicles as an Emerging Vaccine Platform
Vaccine adjuvants are substances that improve the immune capacity of a recombinant vaccine to a great extent and have been in use since the early 1900s; they are primarily short-lived and initiate antigen activity, mainly an inflammatory response. With the developing technologies and innovation, early options such as alum were modified, yet the inorganic nature of major vaccine adjuvants caused several side effects. Outer membrane vesicles, which respond to the stressed environment, are small nano-sized particles secreted by gram-negative bacteria. The secretory nature of outer membrane vesicles (OMV) gives us many benefits in terms of infection bioengineering. 
  • 934
  • 01 Dec 2022
Topic Review
Tissue Engineering of the Urethra—Clinical Applications
Tissue engineering (TE) is a promising approach for repair/substitution of damaged tissues and organs. Urethral strictures are common and serious health conditions that impair quality of life and may lead to serious organ damage. The TE approach is promising and effective, but many issues remain that need to be addressed for broader adoption of TE in urethral repair. Better design of trials, better cooperation of research groups and centralization could lead to reduction of costs and slowly proceed to commercialization and routine use of TE products for urethral reconstruction.
  • 933
  • 23 Dec 2021
Topic Review
Challenges for Biocatalysts and the Circular Economy
In a circular economy era the transition towards renewable and sustainable materials is very urgent. The development of bio-based solutions, that can ensure technological circularity in many priority areas (e.g., agriculture, biotechnology, ecology, green industry, etc.), is very strategic. 
  • 932
  • 19 Dec 2022
Topic Review
Legionella in Domestic Water Systems
Legionella is able to remain in water as free-living planktonic bacteria or to grow within biofilms that adhere to the pipes. It is also able to enter amoebas or to switch into a viable but not culturable (VBNC) state, which contributes to its resistance to harsh conditions and hinders its detection in water.
  • 929
  • 05 Feb 2022
Topic Review
Evaluation of Microalgae Antiviral Activity
Chlamydomonas reinhardtii, una microalga verde, viene utilizzata come vettore per esprimere l'RNA a doppio filamento nel virus della testa gialla (YHV), un virus a RNA a filamento singolo della famiglia Roniviridae che infetta gamberetti e gamberi. Viene somministrato agli animali per introduzione orale. Gli organismi trattati con queste microalghe bioingegnerizzate sopravvivono all'infezione di questo virus.
  • 928
  • 25 Jun 2021
Topic Review
Pathogenic Fungus and Cucurbitaceous Vegetables’ Gummy Stem Blight
Cucurbits are an important vegetable crop of the gourd family. Unfortunately, gummy stem blight (GSB) causes a major fungal disease on Cucurbitaceous vegetable crops. It is also known as black root when affecting fruits, and it is found all over the world. GSB is caused by the fungal pathogen Didymella bryoniae. 
  • 928
  • 07 Jun 2022
Topic Review
Whole Genome Amplification and the appropriate DNA polymerases
In the same way that specialized DNA polymerases (DNAPs) replicate cellular and viral genomes, only a handful of dedicated proteins from various natural origins as well as engineered versions are appropriate for competent exponential amplification of whole genomes and metagenomes (WGA). Different applications have led to the development of diverse protocols, based on various DNAPs. Isothermal whole genomes and metagenomes (WGA) is currently widely used due to the high performance of Φ29 DNA polymerase, but polymerase chain reaction (PCR)-based methods are also available and can provide competent amplification of certain samples. Replication fidelity and processivity must be considered when selecting a suitable enzyme for WGA. However, other properties, such as thermostability, capacity to couple replication, and double helix unwinding, or the ability to maintain DNA replication opposite to damaged bases, are also very relevant for some applications.
  • 928
  • 29 Jun 2023
Topic Review
Cyanobacteria as a Biocatalyst for Biofuel Production
Photosynthetic microorganisms such as algae and cyanobacteria exhibit significant potential as third-generation biofuel catalysts, devoid of the limitations associated with contemporary biofuels. Cyanobacteria, a type of photosynthetic prokaryotes, exhibit significant potential for the direct conversion of carbon dioxide (CO2) into biofuels, chemicals, and various other valuable compounds. There has been a growing interest in the concept of utilising biological processes to convert carbon dioxide into fuels and chemicals.
  • 927
  • 18 Jan 2024
Topic Review
Smartphone Apps in Tinnitus
Smartphones containing sophisticated high-end hardware and offering high computational capabilities at extremely manageable costs have become mainstream and an integral part of users' lives. Widespread adoption of smartphone devices has encouraged the development of many smartphone applications, resulting in a well-established ecosystem, which is easily discoverable and accessible via respective marketplaces of differing mobile platforms. These smartphone applications are no longer exclusively limited to entertainment purposes but are increasingly established in the scientific and medical field. In the context of tinnitus, the ringing in the ear, these smartphone apps range from relief, management, self-help, all the way to interfacing external sensors to better understand the phenomenon. In this paper, we aim to bring forth the smartphone applications in and around tinnitus. Based on the PRISMA guidelines, we systematically analyze and investigate the current state of smartphone apps, that are directly applied in the context of tinnitus. In particular, we explore Google Scholar, CiteSeerX, Microsoft Academics, Semantic Scholar for the identification of scientific contributions. Additionally, we search and explore Google's Play and Apple's App Stores to identify relevant smartphone apps and their respective properties. This review work gives (1) an up-to-date overview of existing apps, and (2) lists and discusses scientific literature pertaining to the smartphone apps used within the context of tinnitus.
  • 922
  • 29 Oct 2020
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