scholarly journals Formulation and Pharmacological Studies of Leaves of Moringa (Moringa oleifera), a Novel Hepatoprotection in Oral Drug Formulations

2021 ◽  
Vol 9 (A) ◽  
pp. 151-156
Author(s):  
Aristianti Aristianti ◽  
Nurkhaeri Nurkhaeri ◽  
Vanny Y. Tandiarrang ◽  
Akbar Awaluddin ◽  
Lukman Muslimin
Keyword(s):  
Physical Properties ◽  
Moringa Oleifera ◽  
Oral Drug ◽  
Stable Suspension ◽  
Serum Glutamate Pyruvate Transaminase ◽  
Accelerated Studies ◽  
The Stability ◽  
Per Oral ◽  
Serum Glutamate

BACKGROUND: Moringa oleifera, Moringaceae, is a tree that is native to South East Asia. Various parts of this tree are commonly used in traditional medicine to treat inflammation, hepatitis, gastric ulcer, and other ailments. AIM: M. oleifera leaves extract was formulated into stable suspensions, characterized, and then evaluated for hepatoprotection activity against isoniazid. MATERIALS AND METHODS: The leaves were extracted using cold maceration, and suspensions of extract were prepared using sodium carboxymethyl cellulose (Na-CMC) as suspension agent at various concentrations (0.1, 0.5, and 1.0%). The formulations were analyzed by their appearance, color, odor, and taste. Density, pH, viscosity, re-dispersibility test, and sedimentation volume were observed. The stability of oral suspensions was analyzed in accelerated studies (5°C ± 2°C and 35°C ± 2°C for 12 h for 7 cycles) to find stable formulation, while the hepatoprotection activity was analyzed using an in vivo isoniazid-induced model. RESULTS: The appearance, color, odor, and taste of the suspensions were shown to be characteristic of the extract. Na-CMC at concentration 0.5% showed good physical properties. Stable suspension at dose 400 mg/kg BW per oral for 28 days exhibited a significant (p < 0.05) decrease in the serum glutamate oxaloacetate transaminase and serum glutamate pyruvate transaminase. CONCLUSION: Suspension containing M. oleifera leaves extract at 50 mg/5 mL was successfully obtained and showed physical properties that were appropriate and characteristic of this dosage form, suitable for hepatoprotection (400 mg/kg BW), making this an alternative to tablets.

scholarly journals Efek Proteksi Pemberian Ekstrak Daun Jamblang (Syzygium cumini) Terhadap Peningkatan Aktivitas Serum Glutamate Pyruvate Transaminase Tikus (Rattus norvegicus) Jantan Yang Diinduksi Timbal Asetat

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
ADILLA OKTARIZA ZARWIN
Keyword(s):  
Pyridoxal Phosphate ◽  
Glutamate Pyruvate Transaminase ◽  
Group Design ◽  
Post Test ◽  
Serum Glutamate Pyruvate Transaminase ◽  
Glutamate Pyruvate ◽  
Post Hoc ◽  
Per Oral ◽  
Serum Glutamate ◽  
One Way Anova

Timbal (Pb) merupakan suatu logam berat yang bersifat toksik bagi tubuh. Timbal dapat menginduksi pembentukan radikal bebas yang dapat menimbulkan stres oksidatif sehingga berujung pada kematian sel. Kematian sel menstimulasi peningkatan enzim hati seperti SGPT dan SGOT. Tubuh memerlukan antioksidan eksogen untuk menghambat stres oksidatif akibat radikal bebas. Daun jamblang mengandung antioksidan alami seperti flavonoid dan fenolik yang dapat menangkal radikal bebas. Penelitian ini bertujuan untuk mengetahui efek proteksi pemberian ekstrak daun jamblang terhadap peningkatan aktivitas serum glutamate pyruvate transaminase (SGPT) tikus jantan yang diinduksi timbal asetat. Penelitian ini adalah penelitian eksperimental dengan rancangan randomized post test only group design menggunakan 15 ekor tikus jantan yang dibagi atas 3 kelompok yaitu kelompok kontrol negatif (K-) yang diberikan pakan standar, kelompok kontrol positif (K+) yang diberikan pakan standar dan timbal asetat dosis 40 mg/KgBB per oral, kelompok perlakuan 1 (P1) yang diberikan pakan standar serta timbal asetat dosis 40 mg/KgBB dan ekstrak daun jamblang dosis 150 mg/KgBB per oral. Penelitian ini dilakukan selama 28 hari dan di hari ke-29 tikus dimatikan lalu diambil serumnya untuk diperiksa kadar SGPT. Pemeriksaan kadar SGPT menggunakan tes berdasarkan kriteria IFCC tanpa pyridoxal phosphate dengan metode Sample Start. Data dianalisis dengan uji Shapiro Wilk, uji One Way Anova dan uji Post Hoc Tukey’s HSD. Hasil penelitian ini menunjukkan rerata kadar SGPT kelompok kontrol negatif (K-) 46,6 U/L, kelompok kontrol positif (K+) 73,9 U/L, dan kelompok perlakuan 1 (P1) 62,0 U/L. Hasil ini menunjukkan perbedaan bermakna rerata kadar SGPT semua kelompok hewan coba yang dibuktikan dengan nilai p < 0,05. Kesimpulan penelitian ini adalah adanya efek proteksi pemberian ekstrak daun jamblang terhadap peningkatan aktivitas SGPT tikus yang diiinduksi oleh timbal asetat. Kata Kunci: Timbal asetat, ekstrak daun jamblang, SGPT.

Preparation, stability and wettability of nanofluid: A review

2020 ◽  
Vol 14 (3) ◽  
pp. 7244-7257
Author(s):  
W. Safiei ◽  
M.M. Rahman ◽  
A.R. Yusoff ◽  
M.R. Radin
Keyword(s):  
Physical Properties ◽  
Working Fluid ◽  
Hybrid Nanofluid ◽  
Engineering Applications ◽  
Performance Preparation ◽  
Stable Suspension ◽  
The Stability ◽  
The Impact ◽  
Thermal Physical Properties

Nanofluids possess many advantages over conventional working fluid especially in physical, thermal and rheology properties. Nowadays, nanofluids have been applied extensively in many engineering applications in enhancing the overall performance. Preparation and characterization of nanofluids are vital as the nanomaterials have significant effects on the dispersion and stability of nanofluids. On the other hand, there is a trend to employ more than a single nanoparticle for preparing nanofluid. The hybrid nanofluid receives wide attention due to its capability in improving the thermal-physical properties of single phase nanofluids. In this paper, the flow of formulating nanofluid from preparation method, characterization, wettability analysis and stability techniques are discussed comprehensively. Furthermore, the challenges for obtaining stable suspension and wettability behaviour of nanofluids are discussed as well. The main objective when preparing the nanofluids is to obtain a well-dispersed nanoparticle into the base fluid. Based on the literature review, the impact of surfactant on the stability and the correlation between nanofluids wettability and thermal-physical properties of nanofluids have great potential to discover. There are some aspects that can be considered to expand the knowledge of nanofluids such as the composition ratio of hybrid nanofluid with regards to achieving the best stability and wettability study of hybrid nanofluid with and without surfactant in the suspension. Therefore, a lot of research should be conducted in order to explore the behaviour of nanofluid and the effect of various surfactants in terms of stability as well as its thermal and viscosity effect on the engineering applications.

scholarly journals Development of O/W emulsions containing Euterpe oleracea extract and evaluation of photoprotective efficacy

2014 ◽  
Vol 50 (3) ◽  
pp. 639-652 ◽  
Author(s):  
Cláudia Cecilio Daher ◽  
Ipojucan Silva Fontes ◽  
Rayllan de Oliveira Rodrigues ◽  
Gabriel Azevedo de Brito Damasceno ◽  
Daiane dos Santos Soares ◽  
...  
Keyword(s):  
Physical Stability ◽  
Antioxidant Properties ◽  
Polymeric Surfactant ◽  
Palm Tree ◽  
Sodium Polyacrylate ◽  
Euterpe Oleracea ◽  
Protection Factor ◽  
Accelerated Studies ◽  
The Stability

Euterpe oleraceaMart. is a palm tree popularly known as açai, which is primarily found in northern Brazil. The açai's fruits contain anthocyanins, a class of polyphenols to which antioxidant properties have been attributed. The aim of this work was to develop O/W sunscreens emulsions containing açai glycolic extract (AGE) and to evaluate both their physical stability and photoprotective efficacy. Emulsions containing AGE and sunscreens were formulated using different types and concentrations of polymeric surfactant (acrylates/C 10-30 alkyl acrylate crosspolymer and sodium polyacrylate). The influence of two rheology modifiers (polyacrylamide (and) C13-14/isoparaffin (and) Laureth-7 and Carbomer) on the stability was also investigated. Physical stability was evaluated by preliminary and accelerated studies. Emulsions with 1.0% sodium polyacrylate were stable and exhibited non-newtonian pseudoplastic behavior and thixotropy. Photoprotective efficacy was evaluated by in vivo Sun Protection Factor (SPF) and determination of Protection Factor of UVA (PF-UVA). When AGE was added to the sunscreen emulsion, no significant increase in the in vivo SPF value was observed. The emulsion containing AGE showed PF-UVA = 14.97, 1.69 of the SPF/PF-UVA ratio and a critical wavelength value of 378 nm, and may therefore be considered a sunscreen with UVA and UVB protection.

Amelioration of Oxidative Stress by Trans-anethole via Modulating Phase I and Phase II Enzymes Against Hepatic Damage Induced by Ccl4 in Male Wistar Rats

2021 ◽  
Author(s):  
Kritika Pandit ◽  
Ajay Kumar ◽  
Sandeep Kaur ◽  
Vinod Kumar ◽  
Subheet Jain ◽  
...  
Keyword(s):  
Phase I ◽  
Phase Ii ◽  
Histopathological Examination ◽  
Serum Markers ◽  
Star Anise ◽  
Male Wistar Rats ◽  
Serum Glutamate Pyruvate Transaminase ◽  
Pre Treatment ◽  
Serum Glutamate

Abstract The current study was designed to assess the in vivo hepatoprotective properties of trans-Anethole and it is a principal aromatic component of star anise possessed several therapeutic properties. Results showed that CCl4 treatment elevated the levels of different serum markers like serum glutamate oxaloacetate transaminase (SGOT) by 4.74 fold, serum glutamate pyruvate transaminase (SGPT) by 3.47 fold, aspartate alkaline phosphatase (ALP) by 3.55 fold, direct bilirubin by 3.48 fold and total bilirubin by 2.38 fold in contrast with control. It was observed that decreased levels of various liver antioxidant enzymes viz. CAT, GR, and GSH were significantly ameliorated by the pre-administration of rats with different doses (40, 80, and 160 mg kg-1 bw) of trans-Anethole. Furthermore, pre-treatment of trans-Anethole reduced phase I enzymes level, whereas elevated level of phase II detoxifying enzymes. Furthermore, histopathological examination showed that the treatment with trans-Anethole was potent in defending the liver from CCl4 toxic injury and restored normal hepatic architecture. Also, trans-Anethole regulated p53 and Cyclin D1 expressions in liver tissue relative to group II treated with CCl4. Collectively, the findings of the study showed a strong efficiency of trans-Anethole in ameliorating the effects caused by CCl4 through modulation of antioxidants and xenobiotic-metabolizing enzymes.

The Infection of Cells by Bullet-Shaped Viruses

1969 ◽  
Vol 27 ◽  
pp. 372-373
Author(s):  
Frederick A. Murphy ◽  
Alyne K. Harrison ◽  
Sylvia G. Whitfield
Keyword(s):  
Electron Microscopy ◽  
Physical Properties ◽  
Host Cell ◽  
Thin Section ◽  
Cultured Cells ◽  
Cell Infection ◽  
Thin Section Electron Microscopy ◽  
Section Electron ◽  
Section Electron Microscopy

The bullet-shaped viruses are currently classified together on the basis of similarities in virion morphology and physical properties. Biologically and ecologically the member viruses are extremely diverse. In searching for further bases for making comparisons of these agents, the nature of host cell infection, both in vivo and in cultured cells, has been explored by thin-section electron microscopy.

Formation and Structure of Casein Micelles in Lactating Mammary Tissue

1970 ◽  
Vol 28 ◽  
pp. 150-151
Author(s):  
Robert J. Carroll ◽  
Marvin P. Thompson ◽  
Harold M. Farrell
Keyword(s):  
Size Distribution ◽  
G Protein ◽  
Milk Proteins ◽  
Mammary Tissue ◽  
Colloidal System ◽  
Casein Micelles ◽  
The Stability

Milk is an unusually stable colloidal system; the stability of this system is due primarily to the formation of micelles by the major milk proteins, the caseins. Numerous models for the structure of casein micelles have been proposed; these models have been formulated on the basis of in vitro studies. Synthetic casein micelles (i.e., those formed by mixing the purified αsl- and k-caseins with Ca2+ in appropriate ratios) are dissimilar to those from freshly-drawn milks in (i) size distribution, (ii) ratio of Ca/P, and (iii) solvation (g. water/g. protein). Evidently, in vivo organization of the caseins into the micellar form occurs in-a manner which is not identical to the in vitro mode of formation.

Kinetics of Various 99mTc-Sn-Pyrophosphate Compounds in the Rat

1977 ◽  
Vol 16 (04) ◽  
pp. 157-162 ◽  
Author(s):  
C. Schümichen ◽  
B. Mackenbrock ◽  
G. Hoffmann
Keyword(s):  
Normal Saline ◽  
Half Life ◽  
Compound A ◽  
Short Half Life ◽  
Low Concentrations ◽  
The Stability ◽  
Kinetics Of ◽  
In Vitro Stability

SummaryThe bone-seeking 99mTc-Sn-pyrophosphate compound (compound A) was diluted both in vitro and in vivo and proved to be unstable both in vitro and in vivo. However, stability was much better in vivo than in vitro and thus the in vitro stability of compound A after dilution in various mediums could be followed up by a consecutive evaluation of the in vivo distribution in the rat. After dilution in neutral normal saline compound A is metastable and after a short half-life it is transformed into the other 99mTc-Sn-pyrophosphate compound A is metastable and after a short half-life in bone but in the kidneys. After dilution in normal saline of low pH and in buffering solutions the stability of compound A is increased. In human plasma compound A is relatively stable but not in plasma water. When compound B is formed in a buffering solution, uptake in the kidneys and excretion in urine is lowered and blood concentration increased.It is assumed that the association of protons to compound A will increase its stability at low concentrations while that to compound B will lead to a strong protein bond in plasma. It is concluded that compound A will not be stable in vivo because of a lack of stability in the extravascular space, and that the protein bond in plasma will be a measure of its in vivo stability.

Applicability of Instability Index for In vitro Protein Stability Prediction

2019 ◽  
Vol 26 (5) ◽  
pp. 339-347 ◽  
Author(s):  
Dilani G. Gamage ◽  
Ajith Gunaratne ◽  
Gopal R. Periyannan ◽  
Timothy G. Russell
Keyword(s):  
Protein Stability ◽  
Caulobacter Crescentus ◽  
Effect Of Temperature ◽  
Instability Index ◽  
Dipeptide Composition ◽  
Experimental Conditions ◽  
The Stability ◽  
Vitro Protein

Background: The dipeptide composition-based Instability Index (II) is one of the protein primary structure-dependent methods available for in vivo protein stability predictions. As per this method, proteins with II value below 40 are stable proteins. Intracellular protein stability principles guided the original development of the II method. However, the use of the II method for in vitro protein stability predictions raises questions about the validity of applying the II method under experimental conditions that are different from the in vivo setting. Objective: The aim of this study is to experimentally test the validity of the use of II as an in vitro protein stability predictor. Methods: A representative protein CCM (CCM - Caulobacter crescentus metalloprotein) that rapidly degrades under in vitro conditions was used to probe the dipeptide sequence-dependent degradation properties of CCM by generating CCM mutants to represent stable and unstable II values. A comparative degradation analysis was carried out under in vitro conditions using wildtype CCM, CCM mutants and two other candidate proteins: metallo-β-lactamase L1 and α -S1- casein representing stable, borderline stable/unstable, and unstable proteins as per the II predictions. The effect of temperature and a protein stabilizing agent on CCM degradation was also tested. Results: Data support the dipeptide composition-dependent protein stability/instability in wt-CCM and mutants as predicted by the II method under in vitro conditions. However, the II failed to accurately represent the stability of other tested proteins. Data indicate the influence of protein environmental factors on the autoproteolysis of proteins. Conclusion: Broader application of the II method for the prediction of protein stability under in vitro conditions is questionable as the stability of the protein may be dependent not only on the intrinsic nature of the protein but also on the conditions of the protein milieu.

Evaluation of the In Vivo Acute Toxicity and In Vitro Hemolytic and Immunomodulatory Activities of the Moringa oleifera Flower Trypsin Inhibitor (MoFTI)

2020 ◽  
Vol 27 ◽  
Author(s):  
Leydianne Leite de Siqueira Patriota ◽  
Dayane Kelly Dias do Nascimento Santos ◽  
Bárbara Rafaela da Silva Barros ◽  
Lethícia Maria de Souza Aguiar ◽  
Yasmym Araújo Silva ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Trypsin Inhibitor ◽  
Hemolytic Activity ◽  
Moringa Oleifera ◽  
Biological Activities ◽  
Hematological Parameters ◽  
Behavioral Alterations ◽  
Female Mice

Background: Protease inhibitors have been isolated from plants and present several biological activities, including immunomod-ulatory action. Objective: This work aimed to evaluate a Moringa oleifera flower trypsin inhibitor (MoFTI) for acute toxicity in mice, hemolytic activity on mice erythrocytes and immunomodulatory effects on mice splenocytes. Methods: The acute toxicity was evaluated using Swiss female mice that received a single dose of the vehicle control or MoFTI (300 mg/kg, i.p.). Behavioral alterations were observed 15–240 min after administration, and survival, weight gain, and water and food consumption were analyzed daily. Organ weights and hematological parameters were analyzed after 14 days. Hemolytic activity of MoFTI was tested using Swiss female mice erythrocytes. Splenocytes obtained from BALB/c mice were cultured in the absence or presence of MoFTI for the evaluation of cell viability and proliferation. Mitochondrial membrane potential (ΔΨm) and reactive oxygen species (ROS) levels were also determined. Furthermore, the culture supernatants were analyzed for the presence of cytokines and nitric oxide (NO). Results: MoFTI did not cause death or any adverse effects on the mice except for abdominal contortions at 15–30 min after administration. MoFTI did not exhibit a significant hemolytic effect. In addition, MoFTI did not induce apoptosis or necrosis in splenocytes and had no effect on cell proliferation. Increases in cytosolic and mitochondrial ROS release, as well as ΔΨm reduction, were observed in MoFTI-treated cells. MoFTI was observed to induce TNF-α, IFN-γ, IL-6, IL-10, and NO release. Conclusion: These results contribute to the ongoing evaluation of the antitumor potential of MoFTI and its effects on other immunological targets.

Sign in / Sign up

Export Citation Format

Share Document