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Home > Genetic Transformation and Withanolides Analysis of Withania Coagulans Dunal .

Genetic Transformation and Withanolides Analysis of Withania Coagulans Dunal .

Thesis Info

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Author

Rehman, Samiya

Program

PhD

Institute

Quaid-I-Azam University

City

Islamabad

Province

Islamabad.

Country

Pakistan

Thesis Completing Year

2019

Thesis Completion Status

Completed

Subject

Biochemistry

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/12585/1/Samiya%20rehman%20biochemistry%202019%20qau%20isb%20prr.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726314508

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Withania coagulans is a valuable medicinal plant that holds a key place in folk medicine due to its extensive use in the treatment of many ailments. Biological activities like antimicrobial, anti-inflammatory, antitumor, hepatoprotective, antihyperglycemic, immunosuppressive, and antitumor, free radical scavenging and anti-depressant have been attributed to the plant due to the presence of secondary metabolites. Withanolides are the major class of secondary metabolites found in W. coagulans. In the present study, bioactive withanolides of Withania coagulans collected from 11 different sites in Pakistan were analyzed. Total withanolide concentration differed by ~17-fold between sites, ranging from 1.01 ± 0.01 mg/g dry weight (mean ± SE) at Jand to 16.83 ± 0.02 mg/g at Mohmand Agency. Different tissues varied in their total withanolide content and there were strong inverse correlations between site annual precipitation versus withanolide amounts in fruits (r = -0.84, P = 0.001), leaves (r = -0.88, P< 0.001), roots (r = -0.91, P< 0.001), and total (r = -0.89, P< 0.001), but not stems (r = -0.20, P = 0.556). Leaf extracts of plants collected from Mianwali and Mohmand Agency possessed high anti-cancer activity in terms of increased induction of apoptosis and decreased cell viability, cell proliferation, cell invasion, and cell migration of different prostate cancer cell lines. These results are useful for the selection of withanolide rich germplasm with potent anti-cancer properties. Owing to the therapeutic importance of these secondary metabolites in W. coagulans, it would be useful to enhance its withanolide content. Therefore, W. coagulans was transformed with the rol A gene which is known to enhance secondary metabolites. Prior to producing transgenic plants, an effective protocol for in vitro regeneration was developed. Maximum embryogenic callus induction response was observed at MS(Murashige and Skooj) enriched with 4.0 μM naphthalene acetic acid and 6.0 μM benzyl adenine, whereas maximum shoot formation response (100%) was observed at 8 μM benzyl adenine. Elongated shoots demonstrated good in vitro rooting (80%) with 2.5 μM indole butyric acid. To produce transgenic plants, pre-culturing of explants was done for 3 days. The GV3101 strain of A. tumefaciens, containing pCV002-A vector harboring the rolA gene of Agrobacterium rhizogenes, was used for infection for 48 hours. Three independent transgenic lines were generated that showed stable integration of the transgene confirmed by PCR analysis. These transgenic lines were selected and screened for eight biologically active withanolides using ultra-highpressure liquid chromatography (UHPLC) with mass spectrometry (MS). Results revealed that transformed lines possessed higher withanolide content as compared to untransformed ones. Extracts of these transgenic lines, which possessed higher levels of total withanolide content, were tested for bioactivity against different prostate cancer cell lines. The results showed that transformed plants extracts had higher anticancer activity in terms of decreased cell viability of prostate cancer cell lines. The data presented could be useful for the selection of potent and withanolide-rich germplasm from natural populations or transformed cell culture.
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اُس نے بھی کیا چاہے وہ اقرار نہیں تھا

اُس نے تو کیا چاہے وہ اقرار نہیں تھا
ایسا بھی نہیںمجھ سے اُسے پیار نہیں تھا
اب شکل مری مجھ سے بھی تو ملتی نہیں ہے
ایسا تو کبھی مَیں اے مرے یار نہیں تھا

A True Vision of Human Rights in Islam

If one accepts the premise of the Old Testament that Adam was created in the image of God, this implies that the divine stamp gives human beings a high value of worth. In similar vein, the Quran says: Surely we have accorded dignity to the Sons of Man. So too, in the Bhagavad-Gita: Who sees his Lord Within every creature deathlessly dwelling amidst the mortal: That man sees truly. Put another way, in a religious context, every human being is considered sacred. Believing in a common universal Divine force, which gives rise to a common humanity and from this flows a universality of certain rights. Since the rights stem from a divine source, they are inalienable by mortal authority. This concept is found not only in the Judaeo-Christian tradition but in Islam in its more advanced and wider perspective. The present study is an attempt to provide an epilogue on human rights given in the Qur’an and Sunnah. It is an in-depth analysis of Human Rights and dignity of person, encompassing its various dimensions. The study is an attempt to understand the true philosophy of human rights in Islam. It aims at providing an ethical and legal basis for the realization of implementation of human rights in the world states in general and in the Muslim states in particular.

Biomedical Potential of Silver and Gold Nanoparticles Synthesized from Daphne Mucronata and Monotheca Buxifolia As New Precursors

Traditional treatment of diseases is primarily based on empirical learning without scientific proofs. Monotheca buxifolia (M. buxifolia) and Daphne mucronata (D. mucronata) has been used traditionally across the globe in different communities including Pakistan, for the treatment of arthritis, tooth ache, rheumatism, flue like conditions, inflammations, ulcers, urinary track diseases,fevers and vermifuge. The present study was designed for synthesis and characterization of biogenic nanoparticles (NPs) and their biomedical potential comparison to that of plant extracts. From the plant D. mucronata (leaves, bark and roots) and M. buxifolia (leaves, seeds and fruits) crude methanolic extracts and fractions were obtained. Phytochemical analysis for the presence of carbohydrates, phenols/tannins, flavonoid, saponins and glycosides was performed. Elemental analysis through atomic absorption spectroscopy (AAS) was performed for determination of various trace and heavy metals. Nutritional analysis of the plants was also determined. Synthesis of NPs included silver nitrate (AgNO3) and gold chloride (AuCl4) that were reduced using aqueous extracts of both plants. The biogenic NPs were then characterized by UV Visible spectroscopy, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Fourier Transform Infra-Red (FTIR) Spectroscopy, X-Ray Diffraction(XRD), Thermo gravimetric-Differential Thermal Analysis (TG-DTA) and Energy Dispersive X-Ray Detection (EDX) techniques. The synthesized NPs and methanolic, n-hexane, chloroform, ethyl acetate and aqueous fractions of both plants were tested for biological activities including antioxidant, anti-bacterial, anti-fungal, haemagglutination, phytotoxic, insecticidal, anti-termite and cytotoxic activities. The aqueous extracts and synthesized silver nanoparticles (AgNPs) of both plants and gold nanoparticles (AuNPs) mediated by M. buxifolialeaves were screened for DNA damage, hemolytic and anti-thrombolytic activities. Crude methanolic extracts and synthesized NPs of both plants were screened for acute toxicity assay, anti-analgesic, anti-pyretic, GIT motility and anti-inflammatory activities. Hematological parameters were also evaluated using male Guinea pigs and Rabbits. All data were then analyzed and interpreted using Microsoft Excel, Origin Pro 8.5 and Graph Pad Prism 6. Phytochemical screening oftest samplesrevealed the presence of reducing sugars and carbohydrates. Saponins were detected in D. mucronata leaves, roots and M. buxifolialeaves and fruits. Phenols and tannins were present in all parts except D. mucronata roots. Glycosides were present in D. mucronate bark, leaves and roots and M. buxifolia leaves. Flavonoids were present in D. mucronata bark and all parts of M. buxifolia. Elemental analysis revealed that D. mucronata contains Fe (0.316), Zn (0.176), Ca (42.26), Cr (0.001), Ni (0.018), Pb (0.404), Mn (0.285), Co (0.051) and Cu (0.035). The M. buxifolia contains Fe (0.169), Zn (0.060), Ca (20.24), Cd (0.022), Pb (0.119), Mn (0.150), Co (0.012) and Cu (0.016). Nutritional analysis determined that D. mucronata contains carbohydrates (61.56), proteins (4.12), fat (2.733), fibers (23.58), ash (9.94) and moisture (3.85). M. buxifolia contains carbohydrates (56.53), proteins (3.15), fat (0.87), fibers (24.08), ash (10.71) and moisture (2.54%). Synthesized NPs were first detected by change in color i.e. Brown for AgNPs and cherry red for AuNPs. The UV-Vis spectral patterns of D. mucronataleaves derived AgNPs were observed with corresponding Surface Plasmon Resonance (SPR) peak at 425 nm, whereas M. buxifolia leaves derived AgNPsand AuNPs at 405 and 540 nm peaks. The FTIR results demonstrated that -CH and -OH groups were involved in synthesis of D. mucronataleaves derived AgNPs as reducing agents. The OH, -CH and COOH groups were involved in synthesis of M. buxifolialeaves derived AgNPs. In case of M. buxifolialeaves derived AuNPsthe -OH, -CH and -CO groups were involved in synthesis of AuNPs. Crystal size through XRD analysis observed in D. mucronataleaves derived AgNPswas 94.779°A whereas M. buxifolialeaves derived AgNPsand AuNPs was 96.18°A and 109.94°A. The EDX analysis confirmed D. mucronataleaves derived AgNPs by containing 42.90% silver (Ag), whereas in M. buxifolialeaves derived AgNPs 53.68% Ag and in AuNPs 15.43% gold (Au) along some other elements in different amounts. The SEM and TEM analysis revealed AgNPs derived from D. mucronata and M. buxifolialeaves possess well dispersed spherical shape with size range 8-30 nm and 8 20 nm respectively. Nano prisms, Nano rods and hexagonal shaped structures were observed in case of M. buxifolialeaves derived AuNPs with approximate size of 10-60 nm. The TGA profile of D. mucronataleaves derived AgNPswas observed with weight loss at 320 and 440°C, whereas M. buxifolialeaves derived AgNPs at 320, 500 and 900 °C, and AuNPs at 320, 480 and 906 °C. The DTA graphs showed endothermic and exothermic reactionsoccurrence of both plants at various degrees. D. mucronate andM. buxifolia extracts and D. mucronataleaves derived AgNPs (86.4%), M. buxifolialeaves derivedAgNPs (84.58%) and AuNPs (86.31%) showed significant antioxidant activity at 600 μg/ml. Potential anti-bacterial activity of both plants extracts and synthesized NPs was observed against Acenatobacter baumanni, Morganella morganii, Escherichia coli, Pseudomonas aeruginosa, Vancomycin-Resistant Staphylococcus aureus (VRSA) and Proteus vulgaris. Both plants mediated AgNPs showed moderate activity against Candida albicans and low activity against Aspergillus niger. These samples were inactive against Fusariumoxysporum, Aspergillus flavus, Aspergillus parasiticus and Penicillium digitatum. The tested samples did not show heameagglutination activity which means phytolectins were absent in them. Highest phytotoxic activity was observed for ethyl acetate extract with 80% inhibitory effect in D. mucronata at 20 mg/ml against Lemna minor. Resultant insecticidal and anti-termite activity of tested samples showed 100% activity against Tribolium castaneum, Rhyzopertha dominica, Callosobruchus analis and Heterotermes indicola. Brine shrimp lethality assay revealed that plants leaves extract derived AgNPs and AuNPs exhibited higher cytotoxic activity than plants extracts alone. Mild thrombolytic activity was observed that ranges from 15.9 to 25.8% clot lysis by the tested samples. Hemolytic and mutagenic activity showed negative results for the tested samples. All extracts were found safe as no lethality was observed. D. mucronataleaves derived AgNPs showed higher percent of writhihng inhibition than both the plants alone and M. buxifolia leaves derived NPs. Anti-pyretic activity observed in tested samples showed that D. mucronataleaves derived AgNPs exhibited better antipyretic activity as compared to M. buxifolialeaves derived AgNPs and AuNPs at both the doses tested. Gastro intestinal track motility (GIT motility) showed that with increase in sample concentration, decrease in% GIT motility was observed. Both plants mediated AgNPs and AuNPs were observed to possess significant anti-inflammatory properties. Biochemical parameters analyzed fortest samples revealed a slight increase and decrease in all hematological parameters, liver function tests, body weight, feed and water intake which did not affect the normal health.