scholarly journals Comparative evaluation of proximate composition and anti-sickling potential of Annona muricata Linn seeds and leaves

2021 ◽  
Vol 01 (02) ◽  
pp. 29-35
Author(s):  
Chinyere Henrietta Onuoha ◽  
Charity Chinenye Nwachukwu ◽  
Ruth Tochukwu Nwachukwu ◽  
Chinwe Glory Nwogu Nwogu ◽  
Chieme Sunday Chukwudoruo ◽  
...  
Keyword(s):  
Proximate Composition ◽  
Poor Health ◽  
Annona Muricata ◽  
In Vivo Models ◽  
Plant Parts ◽  
Health Indices ◽  
Therapeutic Value ◽  
Ethanol Extracts ◽  
Haem Protein

Background: Annona muricata Linn is a notable, well-studied plant of therapeutic value. Based on the abundant pharmacological constituents contained in the understudied plant, it is imperative that the plant parts are investigated for nutritional value and anti-sickling potentials. Sickle cell anaemia (SCA) is an inheritable haematological disorder, caused by an amino acid substitution on the haem protein. The outcomes for SCA are poor health indices and high mortality. Therefore, the use of natural products is necessary and widely promoted in countries with poor health infrastructure. Methods: In this study, A. muricata seeds and leaves were comparatively analysed for the proximate compositions. In addition, aqueous and ethanol extracts of A. muricata seeds and leaves were respectively analysed for anti-sickling potentials with the use of spectrophotometry. Results: Proximate composition of A. muricata seeds and leaves showed that both plant parts contain ash, carbohydrate, fat, fibre, moisture and protein. However, percentage proximate composition of A. muricata seeds was not significantly different from the percentage proximate composition of A. muricata leaves (p ≤ 0.05). From anti-sickling analysis, the aqueous extracts of A. muricata seeds and leaves were observed to inhibit HbSS polymerisation, while the ethanol extracts of A. muricata seeds and leaves showed limitations to the inhibition of HbSS polymerisation. Conclusion: A. muricata seeds and leaves possess potentials as health or nutritional supplements for the management of SCA. Further studies are necessary in order to ascertain efficacy and safety in in vivo models

scholarly journals Annona muricata Linn and Khaya grandifoliola C.DC. Reduce Oxidative Stress In Vitro and Ameliorate Plasmodium berghei-Induced Parasitemia and Cytokines in BALB/c Mice

2021 ◽  
Vol 26 ◽  
pp. 2515690X2110366
Author(s):  
Hope Onohuean ◽  
Abdullateef I. Alagbonsi ◽  
Ibe M. Usman ◽  
Keneth Iceland Kasozi ◽  
Athanasios Alexiou ◽  
...  
Keyword(s):  
Plasmodium Berghei ◽  
Radical Scavenging ◽  
Experimental Period ◽  
Annona Muricata ◽  
Tnf Α ◽  
Anti Oxidant ◽  
Ethanol Extracts ◽  
Radical Scavenging Properties

Background. Annona muricata and Khaya grandifoliola are ethnomedicinally used for the treatment of malaria and have been experimentally shown to have an anti-plasmodial effect, but the mechanisms involved are not fully understood. This study investigated the effect of the ethanol extracts of their leaves on parasitemia, radical scavenging and cytokines in Plasmodium berghei ANKA-infected BALB/c mice. Methods. BALB/c mice were infected with P. berghei and treated with chloroquine, A. muricata or K. grandifoliola extract for 4 days. The percentage of parasitemia and the level of cytokine expression were determined after treatment. Trace element, phytochemical and nitric oxide (NO) scavenging activity, 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging properties assays were done to study the antioxidant effects of AN and KG in vitro. Results. P. berghei consistently increased parasitemia in BALB/c mice. The tested doses (100-, 200-, and 400 mg/kg) of A. muricata and K. grandifoliola attenuated the P. berghei-induced elevation of parasitemia and cytokines (TNF-α, IL-5, and IL-6) in vivo during the experimental period, though not as much as chloroquine. Moreover, both extracts scavenged the DPPH and NO radicals, though A. muricata had more anti-oxidant effect than K. grandifoliola in-vitro. Conclusion. The ethanol extracts of A. muricata and K. grandifoliola reduce parasitemia in P. berghei-treated mice BALB/c by scavenging free radicals and reducing cytokines, though the extracts were not as effective as chloroquine.

scholarly journals Influence of Hypothermic Storage Fluids on Mesenchymal Stem Cell Stability: A Comprehensive Review and Personal Experience

Cells ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1043
Author(s):  
Aneta Ścieżyńska ◽  
Marta Soszyńska ◽  
Patrycja Szpak ◽  
Natalia Krześniak ◽  
Jacek Malejczyk ◽  
...  
Keyword(s):  
Stem Cell ◽  
Cell Viability ◽  
Advanced Therapy Medicinal Product ◽  
In Vivo Models ◽  
Therapeutic Value ◽  
Advanced Therapy ◽  
Key Factor ◽  
Cell Stability ◽  
Preservation Solutions

Mesenchymal stem cells have generated a great deal of interest due to their potential use in regenerative medicine and tissue engineering. Examples illustrating their therapeutic value across various in vivo models are demonstrated in the literature. However, some clinical trials have not proved their therapeutic efficacy, showing that translation into clinical practice is considerably more difficult and discrepancies in clinical protocols can be a source of failure. Among the critical factors which play an important role in MSCs’ therapeutic efficiency are the method of preservation of the stem cell viability and various characteristics during their storage and transportation from the GMP production facility to the patient’s bedside. The cell storage medium should be considered a key factor stabilizing the environment and greatly influencing cell viability and potency and therefore the effectiveness of advanced therapy medicinal product (ATMP) based on MSCs. In this review, we summarize data from 826 publications concerning the effect of the most frequently used cell preservation solutions on MSC potential as cell-based therapeutic medicinal products.

scholarly journals Antitumor Potential of Annona muricata Linn. An Edible and Medicinal Plant in Mexico: In Vitro, In Vivo, and Toxicological Studies

Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7675
Author(s):  
Verenice Merlín-Lucas ◽  
Rosa María Ordoñez-Razo ◽  
Fernando Calzada ◽  
Aida Solís ◽  
Normand García-Hernández ◽  
...  
Keyword(s):  
Cytotoxic Activity ◽  
Flavonoid Glycosides ◽  
Annona Muricata ◽  
Oral Toxicity ◽  
Brine Shrimp Lethality Assay ◽  
Toxicological Studies ◽  
4T1 Cells ◽  
Ethanol Extracts

Annona muricata (Am) is a plant used in traditional Mexican medicine to treat cancer. In this study, ethanol extracts of Am collected in Acapulco and Tecpan from Guerrero state were evaluated orally on Balb/c mice inoculated with 4T1 cells, for cytotoxic activity (CA) on 4T1 cells, in brine shrimp lethality assay (BSLA), and for acute oral toxicity in mice. In addition, ethanol extracts were subjected to high-performance liquid chromatography (HPLC) with diode array detection. Results showed that the extracts collected in December in Acapulco (AcDe) and Tecpan (TeDe) exhibited the most significant antitumor and cytotoxic activity. In the BSLA, the most important effect was observed in the extracts from Acapulco and Tecpan collected in June (AcJu) and August (TeAg), respectively. The samples from Acapulco (AcJu, and AcAg) and Tecpan (TeJu and TeAg) showed the highest toxicity. The analysis of the extracts, AcDe and TeDe, by HPLC revealed that flavonoids, rutin, narcissin, and nicotinflorin were the major components. These findings suggest that extracts from Am collected in Acapulco and Tecpan in the month of December may be an important source to obtain flavonoid glycosides with anticancer potential specifically against breast cancer. This also supports the use of Am to treat cancer in Mexican traditional medicine.

scholarly journals Ubisol-Q10, a Nanomicellar and Water-Dispersible Formulation of Coenzyme-Q10 as a Potential Treatment for Alzheimer’s and Parkinson’s Disease

Antioxidants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 764
Author(s):  
Darcy Wear ◽  
Caleb Vegh ◽  
Jagdeep K. Sandhu ◽  
Marianna Sikorska ◽  
Jerome Cohen ◽  
...  
Keyword(s):  
Coenzyme Q10 ◽  
Water Soluble ◽  
In Vivo Models ◽  
Federal Drug Administration ◽  
Water Dispersible ◽  
Therapeutic Value ◽  
Effective Doses ◽  
First Time

The world continues a desperate search for therapies that could bring hope and relief to millions suffering from progressive neurodegenerative diseases such as Alzheimer’s (AD) and Parkinson’s (PD). With oxidative stress thought to be a core stressor, interests have long been focused on applying redox therapies including coenzyme-Q10. Therapeutic use has failed to show efficacy in human clinical trials due to poor bioavailability of this lipophilic compound. A nanomicellar, water-dispersible formulation of coenzyme-Q10, Ubisol-Q10, has been developed by combining coenzyme-Q10 with an amphiphilic, self-emulsifying molecule of polyoxyethanyl α-tocopheryl sebacate (derivatized vitamin E). This discovery made possible, for the first time, a proper assessment of the true therapeutic value of coenzyme-Q10. Micromolar concentrations of Ubisol-Q10 show unprecedented neuroprotection against neurotoxin exposure in in vitro and in vivo models of neurodegeneration and was extremely effective when delivered either prior to, at the time of, and most significantly, post-neurotoxin exposure. These findings indicate a possible way forward for clinical development due to effective doses well within Federal Drug Administration guidelines. Ubisol-Q10 is a potent mobilizer of astroglia, antioxidant, senescence preventer, autophagy activator, anti-inflammatory, and mitochondrial stabilizer. Here we summarize the work with oil-soluble coenzyme-Q10, its limitations, and focus mainly on efficacy of water-soluble coenzyme-Q10 in neurodegeneration.

Melatonin modifies tumor hypoxia and metabolism by inhibiting HIF-1α and energy metabolic pathway in the in vitro and in vivo models of breast cancer

2019 ◽  
Vol 2 (4) ◽  
pp. 83-98 ◽  
Author(s):  
André De Lima Mota ◽  
Bruna Vitorasso Jardim-Perassi ◽  
Tialfi Bergamin De Castro ◽  
Jucimara Colombo ◽  
Nathália Martins Sonehara ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Glucose Metabolism ◽  
Tumor Growth ◽  
Tumor Cells ◽  
Carbonic Anhydrases ◽  
In Vivo Models ◽  
Ca Ix ◽  
Gene And Protein Expression

Breast cancer is the most common cancer among women and has a high mortality rate. Adverse conditions in the tumor microenvironment, such as hypoxia and acidosis, may exert selective pressure on the tumor, selecting subpopulations of tumor cells with advantages for survival in this environment. In this context, therapeutic agents that can modify these conditions, and consequently the intratumoral heterogeneity need to be explored. Melatonin, in addition to its physiological effects, exhibits important anti-tumor actions which may associate with modification of hypoxia and Warburg effect. In this study, we have evaluated the action of melatonin on tumor growth and tumor metabolism by different markers of hypoxia and glucose metabolism (HIF-1α, glucose transporters GLUT1 and GLUT3 and carbonic anhydrases CA-IX and CA-XII) in triple negative breast cancer model. In an in vitro study, gene and protein expressions of these markers were evaluated by quantitative real-time PCR and immunocytochemistry, respectively. The effects of melatonin were also tested in a MDA-MB-231 xenograft animal model. Results showed that melatonin treatment reduced the viability of MDA-MB-231 cells and tumor growth in Balb/c nude mice (p <0.05). The treatment significantly decreased HIF-1α gene and protein expression concomitantly with the expression of GLUT1, GLUT3, CA-IX and CA-XII (p <0.05). These results strongly suggest that melatonin down-regulates HIF-1α expression and regulates glucose metabolism in breast tumor cells, therefore, controlling hypoxia and tumor progression. 

Current Challenges in the Development of Vaccines and Drugs Against Emerging Vector-borne Diseases

2019 ◽  
Vol 26 (16) ◽  
pp. 2974-2986 ◽  
Author(s):  
Kwang-sun Kim
Keyword(s):  
New Host ◽  
In Vivo Models ◽  
Vector Borne Diseases ◽  
Novel Drugs ◽  
Huge Impact ◽  
Tick Borne Disease ◽  
Vector Borne ◽  
Living Organisms

Vectors are living organisms that transmit infectious diseases from an infected animal to humans or another animal. Biological vectors such as mosquitoes, ticks, and sand flies carry pathogens that multiply within their bodies prior to delivery to a new host. The increased prevalence of Vector-Borne Diseases (VBDs) such as Aedes-borne dengue, Chikungunya (CHIKV), Zika (ZIKV), malaria, Tick-Borne Disease (TBD), and scrub typhus has a huge impact on the health of both humans and livestock worldwide. In particular, zoonotic diseases transmitted by mosquitoes and ticks place a considerable burden on public health. Vaccines, drugs, and vector control methods have been developed to prevent and treat VBDs and have prevented millions of deaths. However, development of such strategies is falling behind the rapid emergence of VBDs. Therefore, a comprehensive approach to fighting VBDs must be considered immediately. In this review, I focus on the challenges posed by emerging outbreaks of VBDs and discuss available drugs and vaccines designed to overcome this burden. Research into promising drugs needs to be upgraded and fast-tracked, and novel drugs or vaccines being tested in in vitro and in vivo models need to be moved into human clinical trials. Active preventive tactics, as well as new and upgraded diagnostics, surveillance, treatments, and vaccination strategies, need to be monitored constantly if we are to manage VBDs of medical importance.

Potential for Treatment of Neurodegenerative Diseases with Natural Products or Synthetic Compounds that Stabilize Microtubules

2020 ◽  
Vol 26 (35) ◽  
pp. 4362-4372
Author(s):  
John H. Miller ◽  
Viswanath Das
Keyword(s):  
Natural Products ◽  
Neurodegenerative Diseases ◽  
In Vivo Models ◽  
Synthetic Compounds ◽  
Stabilizing Agents ◽  
Animal Models Of Disease ◽  
Model Studies ◽  
Models Of Disease

No effective therapeutics to treat neurodegenerative diseases exist, despite significant attempts to find drugs that can reduce or rescue the debilitating symptoms of tauopathies such as Alzheimer’s disease, Parkinson’s disease, frontotemporal dementia, amyotrophic lateral sclerosis, or Pick’s disease. A number of in vitro and in vivo models exist for studying neurodegenerative diseases, including cell models employing induced-pluripotent stem cells, cerebral organoids, and animal models of disease. Recent research has focused on microtubulestabilizing agents, either natural products or synthetic compounds that can prevent the axonal destruction caused by tau protein pathologies. Although promising results have come from animal model studies using brainpenetrant natural product microtubule-stabilizing agents, such as paclitaxel analogs that can access the brain, epothilones B and D, and other synthetic compounds such as davunetide or the triazolopyrimidines, early clinical trials in humans have been disappointing. This review aims to summarize the research that has been carried out in this area and discuss the potential for the future development of an effective microtubule stabilizing drug to treat neurodegenerative disease.

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