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Topic Review
Molecular Mechanisms of Immunoregulatory Function of DPSCs
Dental pulp stem cells (DPSCs) are mesenchymal stem cells (MSCs) derived from dental pulp tissue, which have high self-renewal ability and multi-lineage differentiation potential. With the discovery of the immunoregulatory ability of stem cells, DPSCs have attracted much attention because they have similar or even better immunomodulatory effects than MSCs from other sources. DPSCs and their exosomes can exert an immunomodulatory ability by acting on target immune cells to regulate cytokines. DPSCs can also migrate to the lesion site to differentiate into target cells to repair the injured tissue, and play an important role in tissue regeneration.
  • 629
  • 05 May 2023
Topic Review
Clinical Application of Hypoxia-Inducible Factor-1α Inhibitors
Hypoxia is a common phenomenon amongst physiological and pathological conditions, and is a strong stressor for cells and organisms, which can lead to metabolic disorders, and even cause cell death. Hypoxia-inducible factor-1α (HIF-1α) is the only transcription factor that has been found to be active under hypoxia, and is also the main nuclear transcription factor that mediates the adaptive response to hypoxia in mammals. It is closely related to the growth and development of organisms and the pathogenesis of some diseases. HIF-1α has low expression in the human brain, lung, placenta, heart, skeletal muscle, kidney, and pancreas under normoxia, but there is an exponentially large increase of HIF-1α in the brain, lung, kidney, heart, and other tissues under hypoxia. HIF-1α inhibitors can be widely used in the treatment of various diseases related to HIF-1 overexpression, such as tumors; leukemia; diabetes and its complications; ischemic, cardiovascular and brain diseases; and inflammatory diseases, etc.
  • 627
  • 20 Jul 2023
Topic Review
Pharmaceutical Properties of Gabapentin
Gabapentin (GBP) is a common name for 1-(aminomethyl)cyclohexaneacetic acid (C9H17NO2, CAS Registry No. 60142-96-3), a GABA (γ-aminobutyric acid) derivative and a popular active pharmaceutical ingredient (API). It has a molecular weight of 171.34 and two pKa values of 3.68 and 10.70.
  • 627
  • 13 Mar 2024
Topic Review
Fusarium-Derived Secondary Metabolites with Antimicrobial Effects
Fungal microbes are important in the creation of new drugs, given their unique genetic and metabolic diversity. As one of the most commonly found fungi in nature, Fusarium spp. has been well regarded as a prolific source of secondary metabolites (SMs) with diverse chemical structures and a broad spectrum of biological properties. However, little information is available concerning their derived SMs with antimicrobial effects. By extensive literature search and data analysis, as many as 185 antimicrobial natural products as SMs had been discovered from Fusarium strains by the end of 2022.
  • 626
  • 21 Apr 2023
Topic Review
Chemical Structures and Biological Activities of of Aplysinopsins
Marine products are among the most promising sources of biologically active molecules. Aplysinopsins, tryptophan-derived marine natural products, were isolated from different natural marine sources including sponges, stony corals (hard corals) especially genus scleractinian, as well as sea anemone, in addition to one nudibranch. Aplysinopsins were reported to be isolated from different marine organisms related to various geographic areas such as Pacific, Indonesia, Caribbean, and Mediterranean regions.
  • 623
  • 09 May 2023
Topic Review
Polyphenols Mediate Neuroprotection in Cerebral Ischemic Stroke
Stroke is one of the main causes of mortality and disability, and it is due to be included in monetary implications on wellbeing frameworks around the world. Ischemic stroke is caused by interference in cerebral blood flow, leading to a deficit in the supply of oxygen to the affected region. It accounts for nearly 80–85% of all cases of stroke. Oxidative stress has a significant impact on the pathophysiologic cascade in brain damage leading to stroke. In the acute phase, oxidative stress mediates severe toxicity, and it initiates and contributes to late-stage apoptosis and inflammation. Oxidative stress conditions occur when the antioxidant defense in the body is unable to counteract the production and aggregation of reactive oxygen species (ROS).
  • 620
  • 17 Mar 2023
Topic Review
Plant-Derived Proteasome Inhibitors in Developing Cancer Therapeutics
Homeostasis between protein synthesis and degradation is a critical biological function involving a lot of precise and intricate regulatory systems. The ubiquitin-proteasome pathway (UPP) is a large, multi-protease complex that degrades most intracellular proteins and accounts for about 80% of cellular protein degradation. The proteasome, a massive multi-catalytic proteinase complex that plays a substantial role in protein processing, has been shown to have a wide range of catalytic activity and is at the center of this eukaryotic protein breakdown mechanism. As cancer cells overexpress proteins that induce cell proliferation, while blocking cell death pathways, UPP inhibition has been used as an anticancer therapy to change the balance between protein production and degradation towards cell death. Natural products have unique chemical diversity, which results in diversity in their biological activities and drug-like properties. Physical chemistry has been able to recognize the high structural diversity of natural products. Their efficacy is related to the complexity of their well-organized three-dimensional chemical and steric properties, which offer many advantages in terms of efficiency and the selectivity of molecular targets.
  • 616
  • 18 Apr 2023
Topic Review
Nanoemulsion in Management of Colorectal Cancer
The second most significant cause of cancer-related mortality and morbidity in the United States is colorectal cancer (CRC), the third most diagnosed malignancy. People over 50 have an increased risk of CRC everywhere in the world. Genetic and environmental risk factors significantly influence CRC development. Early detection is critical in the treatment and prevention of CRC. The population’s incidence rate of CRC is reduced by screening techniques and medicines, although recurrence of the disease may result from the cancer’s ability to spread locally. Nanotechnology is crucial for cancer treatment because it allows for the delivery of targeted chemotherapies to cancer cells directly and with greater therapeutic potency. Nanoemulsions have broad application in pharmaceutics, cosmetics, and food; their outstanding properties include enhanced dispersion of active hydrophobic components, small size, high surface area per unit volume, and improved absorption in cancer treatment.
  • 615
  • 14 Aug 2023
Topic Review
Natural Products as Novel Medications for Parkinson’s Disease
As the global population ages, the prevalence of Parkinson’s disease (PD) is steadily on the rise. PD demonstrates chronic and progressive characteristics, and many cases can transition into dementia. This increases societal and economic burdens, emphasizing the need to find effective treatments. Among the widely recognized causes of PD is the abnormal accumulation of proteins, and autophagy dysfunction accelerates this accumulation. The resultant Lewy bodies are also commonly found in Alzheimer’s disease patients, suggesting an increased potential for the onset of dementia. Additionally, the production of free radicals due to mitochondrial dysfunction contributes to neuronal damage and degeneration. The activation of astrocytes and the M1 phenotype of microglia promote damage to dopamine neurons. The drugs currently used for PD only delay the clinical progression and exacerbation of the disease without targeting its root cause, and come with various side effects. Thus, there is a demand for treatments with fewer side effects, with much potential offered by natural products. 
  • 612
  • 26 Jan 2024
Topic Review
pH-Responsive Vaccine Delivery System in Cancer Vaccines Formulation
Cancer vaccination as an immunotherapy to increase the immune system’s anti-tumor immunity has been extensively studied.  Extracellular and intracellular pH measurements reveal that the endocytic spaces of DCs have a somewhat acidic pH. While being surrounded by endosomal structures, proteases are more quickly destroyed as a consequence of antigen import by endocytosis and the consequent acidification of the lysosome. Low endosomal pH is a suitable internal signal for pH-responsive vaccine delivery techniques for regulating antigen production. Reacting to changes in pH, this intracellular distribution may be achieved by using acid-catalyzed disintegration, particle phase shift, and the “proton sponge effect”. When it comes to the administration of cancer vaccines, pH-responsive biomaterials have attracted the greatest attention.
  • 610
  • 14 Aug 2023
Topic Review
Chronic Oral Methylphenidate Behavioral, Neurochemical and Developmental Effects
The majority of animal studies on methylphenidate (MP) use intraperitoneal (IP) injections, subcutaneous (SC) injections, or the oral gavage route of administration. While all these methods allow for delivery of MP, it is the oral route that is clinically relevant. IP injections commonly deliver an immediate and maximum dose of MP due to their quick absorption. This quick-localized effect can give timely results but will only display a small window of the psychostimulant’s effects on the animal model. On the opposite side of the spectrum, a SC injection does not accurately represent the pathophysiology of an oral exposure because the metabolic rate of the drug would be much slower. The oral-gavage method, while providing an oral route, possesses some adverse effects such as potential animal injury and can be stressful to the animal compared to voluntary drinking. It is thus important to allow the animal to have free consumption of MP, and drinking it to more accurately mirror human treatment. The use of a two-bottle drinking method allows for this. Rodents typically have a faster metabolism than humans, which means this needs to be considered when administering MP orally while reaching target pharmacokinetic levels in plasma.
  • 609
  • 31 Mar 2023
Topic Review
Piper sarmentosum on Metabolic Syndrome
Piper sarmentosum (PS) is a traditional medicinal herb used by South East Asians. It demonstrates promising properties against various non-communicable diseases and infectious agents due to its antioxidant and anti-inflammatory properties. Given that oxidative stress and inflammation are involved in developing and exacerbating metabolic syndrome (MetS) and its principal components (central obesity, hyperglycaemia, hypertension, and dyslipidaemia), PS could manage MetS and its complications. 
  • 608
  • 25 Oct 2021
Topic Review
Anti-Breast Cancer Effects of Fucoxanthin
Breast cancer (BC) is one of the most common cancers diagnosed and the leading cause of cancer-related death in women. Although there are first-line treatments for BC, drug resistances and adverse events have been reported. Given the incidence of BC keeps increasing, seeking novel therapeutics is urgently needed. Fucoxanthin (Fx) is a dietary carotenoid commonly found in seaweeds and diatoms. Both in vitro and in vivo studies show that Fx and its deacetylated metabolite fucoxanthinol (Fxol) inhibit and prevent BC growth. The NF-κB signaling pathway is considered the major pathway contributing to the anti-proliferation, anti-angiogenesis and pro-apoptotic effects of Fx and Fxol. Other signaling molecules such as MAPK, MMP2/9, CYP and ROS are also involved in the anti-cancer effects by regulating the tumor microenvironment, cancer metastasis, carcinogen metabolism and oxidation. Besides, Fx also possesses anti-obesity effects by regulating UCP1 levels and lipid metabolism, which may help to reduce BC risk. More importantly, mounting evidence demonstrates that Fx overcomes drug resistance.
  • 607
  • 27 Jun 2022
Topic Review
Potassium Ion Channels in Glioma
Ion channels are transmembrane proteins that create a regulated pore structure through which ions can pass across the lipid bilayer of biological membranes. Ion channels, specifically those controlling the flux of potassium across cell membranes, have been shown to exhibit an important role in the pathophysiology of glioma, the most common primary central nervous system tumor with a poor prognosis.
  • 606
  • 25 Apr 2023
Topic Review
Therapeutic Cancer Vaccines
Vaccines have played a significant role in protecting public and personal health against infectious diseases and proved their great potential in battling cancers as well. 
  • 600
  • 20 Jul 2022
Topic Review
Impact of Solute Carrier Transporters in Glioma Pathology
Solute carriers (SLCs) are the largest family of transmembrane transporters (consisting of 439 proteins without the pseudogenes), which are divided into 65 subfamilies (60 of which have been identified in the brain). They play a crucial role in exchanging different substances such as nutrients, ions, metabolites, as well as drugs through biological membranes. Most SLCs share the same protein structure consisting of 12 presumed transmembrane segments with molecular mass ranging between 50 to 100 kDa.
  • 598
  • 06 Jun 2023
Topic Review
Metastasis Suppression through Primary Tumour Targeting with Nanoparticles
Nanotechnology’s use has expanded, demonstrating its efficacy in enhancing fields such as cancer treatment, radiation therapy, diagnostics, and imaging. Applications for nanomaterials are diverse, ranging from enhanced radiation adjuvants to more sensitive early detection instruments. Cancer, particularly when it has spread beyond the original site of cancer, is notoriously tough to combat. Many people die from metastatic cancer, which is why it remains a huge issue. Cancer cells go through a sequence of events known as the “metastatic cascade” throughout metastasis, which may be used to build anti-metastatic therapeutic techniques. Conventional treatments and diagnostics for metastasis have their drawbacks and hurdles that must be overcome. 
  • 597
  • 10 Jul 2023
Topic Review
Active Substances in Cannabis, Endocannabinoid System, and Metabolism
Since legalization, cannabis/marijuana has been gaining considerable attention as a functional ingredient in food. ∆-9 tetrahydrocannabinol (THC), cannabidiol (CBD), and other cannabinoids are key bioactive compounds with health benefits. Endocannabinoids have been shown to regulate a variety of different receptors and channels, including TRP channels and the G-protein-coupled receptors GPR55, GPR18, GPR119, γ-aminobutyric acid (GABA), and glycine receptors.
  • 594
  • 06 Apr 2023
Topic Review
Anticancer Effects of α-Linolenic Acid
α-linolenic acid (ALA) belongs to the family of n-3 polyunsaturated fatty acids (n-3 PUFAs) and contains a carbon–carbon double bond on the third carbon atom at the methyl end of the carbon chain. This family of essential fatty acids also includes eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). ALA has gradually attracted increased attention due to its nutritional and medicinal advantages. Studies have shown that ALA exerts beneficial effects on a variety of diseases, including cancer.
  • 590
  • 19 Mar 2024
Topic Review
Nano-Formulations for Pulmonary Delivery
With the development of nanotechnology and confronting the problems of traditional pharmaceutical formulations in treating lung diseases, inhalable nano-formulations have attracted interest. Inhalable nano-formulations for treating lung diseases allow for precise pulmonary drug delivery, overcoming physiological barriers, improving aerosol lung deposition rates, and increasing drug bioavailability. They are expected to solve the difficulties faced in treating lung diseases. 
  • 589
  • 07 Feb 2024
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