scholarly journals A brief history of taxol

2014 ◽  
Vol 83 (1) ◽  
pp. 47-52
Author(s):  
Justyna Żwawiak ◽  
Lucjusz Zaprutko

Traditional application of plant in folk medicine is a base for discovery of new active chemical substances. In the second half of 20th century, significant antitumor activity of extract from bark of the Yew tree was recognized. The compound that was responsible for this kind of properties has called taxol and had structure of diterpene with acyl groups. Low availability forced researchers to find different ways of taxol gaining. In the further years, many synthetic and semi-synthetic methods were developed. Nowadays, biotechnological methods with use of cell suspension cultures are introduced.

Author(s):  
Aziza M. Taj ALdeen ◽  
Marwa ElsebaiAbd El-Sadek ◽  
Abdul-hakim S. Abdul-hakim ◽  
Esam A. Hussein ◽  
Ali G. Al-kaf

Objectives: The main objective of the present study is to obtain callus and cell suspension culture from Balanitesa egyptiaca sterile plantlets grown in vitro and to compare growth and the biosynthetic potential of saponins, flavonoids and glycosides by callus and cell suspension culture Balanitisa egyptiaca. Methods: Callus was induced from the mother plants on MS culture media supplemented with  2.0 mg/l  BA + 2.0 mg/l  2,4-D with and without agar gelling. Total saponins, glycosides and flavonoids were estimated in both types of cultures over a period extending from 1 to 5 weeks to compare the productivity of such secondary metabolites in callus and cell suspension cultures. Results: The results obtained indicated that both calli and cell suspension cultures were able to synthesize the target active ingredients and that cell suspension culture was superior to the callus culture in the biosynthesis and accumulation processes. By the end of the incubation period, the amount of total saponins in cell suspension culture reached up 51.97±0.26 dry biomass compared to 35.02 ±0.06 mg/g in callus culture. The amount of total flavonoids in cell suspension culture reached up 10.88±0.24 dry biomass compared to 6.40±0.02 mg/g in callus culture and of total glycosides reached up 6.11±0.25 dry biomass compared to 5.06 ±0.05 mg/g in callus culture. Conclusions: The results obtained in this study may indicate the promising role that plant cell culture will play in the future in phytopharmaceutical industry. Peer Review History: Received 16 July 2020; Revised 12 August; Accepted 26 August, Available online 15 September 2020 UJPR follows the most transparent and toughest ‘Advanced OPEN peer review’ system. The identity of the authors and, reviewers will be known to each other. This transparent process will help to eradicate any possible malicious/purposeful interference by any person (publishing staff, reviewer, editor, author, etc) during peer review. As a result of this unique system, all reviewers will get their due recognition and respect, once their names are published in the papers. We expect that, by publishing peer review reports with published papers, will be helpful to many authors for drafting their article according to the specifications. Auhors will remove any error of their article and they will improve their article(s) according to the previous reports displayed with published article(s). The main purpose of it is ‘to improve the quality of a candidate manuscript’. Our reviewers check the ‘strength and weakness of a manuscript honestly’. There will increase in the perfection, and transparency. Received file Average Peer review marks at initial stage: 6.0/10 Average Peer review marks at publication stage: 7.5/10 Reviewer(s) detail: Name: Dr. Gehan Fawzy Abdel Raoof Kandeel Affiliation: Researcher at pharmacognosy Department, National Research Centre, Egypt. E-mail: [email protected]   Name: Ahmad Najib Affiliation: Department of Pharmacognosy-Phytochemystry Universitas Muslim Indonesia-Indonesia E-mail: [email protected]   Comments of reviewer(s): Similar Articles: PHYTOCHEMICAL ANALYSIS AND ANTIMICROBIAL ACTIVITY OF COLOCASIA ESCULENTA (TARO) MEDICINAL PLANT LEAVES USED IN FOLK MEDICINE FOR TREATMENT OF WOUNDS AND BURNS IN HUFASH DISTRICT AL MAHWEET GOVERNORATE–YEMEN PHYTOCHEMICAL SCREENING AND THIN LAYER CHROMATOGRAPHIC OF PRUNUS DULCIS (ALMOND) MEDICINAL PLANT LEAVES USED IN FOLK MEDICINE FOR TREATMENT OF WOUNDS AND BURNS IN HUFASH DISTRICT AL MAHWEET GOVERNORATE–YEMEN  


2004 ◽  
pp. 142-157
Author(s):  
M. Voeikov ◽  
S. Dzarasov

The paper written in the light of 125th birth anniversary of L. Trotsky analyzes the life and ideas of one of the most prominent figures in the Russian history of the 20th century. He was one of the leaders of the Russian revolution in its Bolshevik period, worked with V. Lenin and played a significant role in the Civil War. Rejected by the party bureaucracy L. Trotsky led uncompromising struggle against Stalinism, defending his own understanding of the revolutionary ideals. The authors try to explain these events in historical perspective, avoiding biases of both Stalinism and anticommunism.


2020 ◽  
Vol 99 (11) ◽  

The authors present an outline of the development of thyroid surgery from the ancient times to the beginning of the 20th century, when the definitive surgical technique have been developed and the physiologic and pathopfysiologic consequences of thyroid resections have been described. The key representatives, as well as the contribution of the most influential czech surgeons are mentioned.


2007 ◽  
Vol 62 (3) ◽  
pp. 407-420
Author(s):  
Magda Ritoókné Ádám ◽  
Olivér Nagybányai Nagy ◽  
Csaba Pléh ◽  
Attila Keresztes

VárinéSzilágyiIbolya: Építészprofilok, akik a 70-es, 80-as években indultak(Ritoókné Ádám Magda)      407RacsmányMihály(szerk.): Afejlődés zavarai és vizsgálómódszerei(Nagybányai Nagy Olivér)     409Új irányzatok és a bejárt út a pszichológiatörténet-írásban (Mandler, G.: Interesting times. An encounter with the 20th century; Hergenhahn, B. N.: An introduction to the history of psychology; Schultz, D. P.,Schultz, S. E.: A history of modern psychology; Greenwood, J. D.: The disappearance of the social in American social psychology;Bem, S.,LoorendeJong, H.: Theoretical issues in psychology. An introduction; Sternberg, R. J. (ed.)Unity in psychology: Possibility or pipedream?;Dalton, D. C.,Evans, R. B. (eds): __


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