By B. Ur-Gosh. John Carroll University. 2018.
A remarkable decrease in rosavin content and increase of the content of its aglycone (trans-cinnamic alcohol) indicates that freezing was not effective in inactivating hydrolytic enzymes purchase zantac 150mg with amex, which is essential for plant material stabilisation buy generic zantac 300mg line. In order to reliably evaluate the quality of a raw material it is necessary to fnd the best method for extraction of the main biologically active compounds buy zantac 150 mg with visa. Data concerning the recommended solvent and extraction method for standardisa- tion of roseroot is contradictory [39, 40, 49]. Our studies indicate that periodi- cal ultrasonic extraction and continuous exhaustive extraction (in a Soxhlet-like Büchi Universal Extraction System) allowed to get extracts characterised by a similar content of phenolic compounds. Both 70 % ethanol and 100 % methanol appeared to be better extraction media than water (Table 16. The results of several years studies carried out in the Warsaw Agricultural University indicate that the cultivation of roseroot in the lowlands of the tem- perate zone is possible. In comparison with the natural mountain habitats of roseroot, the region of central Poland is characterised by a longer vegetation period, which results in a faster increment in the weight of its underground organs, which are used as a medicinal raw material. In such conditions it is pos- sible to obtain a high yield and good quality of the raw material as early as in the 5th year of plant vegetation. In the 6th year, the plants divide into smaller autonomic parts that are characterised by a lower content of salidroside and rosavin, the compounds regarded to be the most important for the pharmaco- logical activity of roseroot preparations. Taking into consideration the high intraspecifc variability of roseroot, it is advisable to undertake research on basic breeding problems, as well as on effec- tive methods of vegetative propagation (e. Post-harvest treatment of the medicinal raw materials may distinctly af- fect their quality (i. Convection drying is the most common method of roseroot raw mate- rial stabilisation. Our studies proved that comparable results might be obtained using lyophilisation. Regarding the necessity for the fast, cheap and reliable evaluation of a raw material, it seems that the best extraction method for determination of pheno- lic compounds in roseroot is ultrasonic extraction with methanol as a solvent. Abidov M, Crendal F, Grachev S, Seifulla R, Ziegenfuss T (2003) Bull Exp Biol Med 136:585 3. Darbinyan V, Kteyan A, Panossian A, Gabrielian E, Wilkman G, Wagner H (2000) Phytomedicine 7:365 6. Tolonen A, Pakonen M, Hohtola A, Jalonen J (2003) Chem Pharm Bull (Tokyo) 51:467 39. Syrov YuP (1985) Pravila sbora i suszki lekarstvennych rastenij, Moskwa Chapter 17 Apoptosis and Plant-Derived Pharmaceuticals L. Brisson Department of Biochemistry and Microbiology, Research in Heath and Life Science Building, Laval University, Quebec, Quebec, Canada, G1K 7P4, e-mail: louise. Many plant-derived antitumoral compounds such as paclitaxel, the vinca alkaloids, and catechin derivatives exhibit an extraor- dinary diversity of chemical structures that might exert their effects either by impairing cell division (mitosis) or by stimulating cells to undergo a cell-death program known as apoptosis. This review focuses on the effects of some plant- derived antitumoral substances on programmed cell death in animals. Several studies have shown a correlation between plant-derived drug-induced cell death and expression of apoptotic regulators or altered signaling pathways. Among the regulators of programmed cell death that have a modifed expression is the protein p53 (a protein that effects either arrest of the cell cycle or activation of cell death) and proteins belonging to the Bcl-2 family, including members that activate or inhibit cell death. In several studies, it was shown that interactions with those regulators involved changes in signal transduction, especially with specialized protein kinases. Although some antitumoral substances are used ex- tensively in the clinical setting, their precise mechanism of action on cell death remains to be elucidated. On the other hand, since apoptosis could be initiated through diverse mechanisms, it appears that the molecular targets of various plant molecules that exhibit a wide diversity of chemical structures could also be diverse and may depend on the cellular context. Brisson prescription drugs contain active ingredients derived from plants, including many anti-tumor agents such as paclitaxel, vinca alkaloids, and catechin de- rivatives, to mention the most studied ones. Many plant-derived antitumoral compounds exhibit an extraordinary diversity of chemical structures that might work either by impairing cell division (mitosis) or by stimulating cells to undergo a program of cell death referred to as apoptosis. The latter process is a genetically encoded cell-elimination program for removing unnecessary or harmful cells during normal development or pathological conditions (for re- cent reviews see [1–4]). In animal cells, two major pathways are com- monly described for apoptosis; the death-receptor pathway, referred to as the extrinsic pathway, and the mitochondrial route. Both pathways lead to caspase (cysteine proteases that their substrates following specifc aspartate residues) activation and cleavage of their specifc substrates. Therefore, members of Bcl-2 family are regarded as key elements in maintaining a balance between cell growth and cell death. It is believed that in animal cells, apoptosis is controlled by an equilibrium between antiapoptotic and proapoptotic members. For ex- ample, a high level of Bcl-2 relative to Bax promotes survival, while an excess of Bax results in cell death. Pro- and antiapoptotic Bcl-2 members are known to interact with each other at the level of protein–protein interactions; such interaction may play a regulatory role in the induction or the suppression of cell death. Among them, the Bax protein can promote apoptosis by interfering with mitochondria features either by forming a channel leading to the release of the electron transfer protein, cytochrome c, or by perturbing the oxidative state. Several other factors, such as post-translational modifcations, may also regulate the fnal cellular outcome. Accordingly, some reports have suggested the importance of Bcl-2 phosphorylation . Since killing cancer cells remain a signifcant topic, the scope of this paper is to review the known effects of plant antitumoral substances on apoptosis. Alternatively, other substances known as chemopreventive agents have low toxicities com- pared to the chemotherapeutic agents, but they appear promising for prevent- Chapter 17 Apoptosis and Plant-Derived Pharmaceuticals 319 ing, arresting, and reversing cancer . Among the most studied antitumoral drugs fgure: (1) the taxanes, (2) the vinca alkaloids, (3) the lapachone, (4) the polyphenol derivatives, and 5) the catechin derivatives from tea plants.
The receptacle and antimicrobial effect in vitro and an antiphlogistic effect in epicalyx are hairy order 300mg zantac visa. In addition zantac 150mg on line, there are about 100 disc flowers purchase zantac 150 mg line, cardiovascular effect (increase of contraction amplitude with which are tubular. The rhizome may also be 3-headed with many • Fever and colds yellow-brown secondary roots. The glandu- • Inflammation of the mouth and pharynx lar-haired stem has 2 to 6 smaller leaves, which are ovate to • Rheumatism lanceolate, entire-margined or somewhat dentate. Unproven Uses: External folk medicine uses include conse- Habitat: Arnica is found in Europe from Scandinavia to quences of injury such as traumatic edema, hematoma, southern Europe. It is also found in southern Russia and contusions, as well as rheumatic muscle and joint problems. Other applications are inflammation of the oral and throat Production: Arnica flower consists of the fresh or dried region, furunculosis, inflammation caused by insect bites and inflorescence of Arnica montana or Arnica chamissonis. In Russian folk medicine, the drug is used to treat flower should be dried quickly at 45° to 50°C. Furthermore, the drug is used for myocarditis, arteriosclerosis, angina pectoris, exhaustion, Not to be Confused With: Other yellow-flowering Asteracea. While some uses are plausible, Bane, Mountain Tobacco, Wolfsbane most are unproven. Frequent administration, in particular of the undi- with short-chained fatty acids such as acetic acid, isobutyric luted tincture, as well as with contacts with the plant, can acid, 2- methyl-butyric acid, methylacrylic acid, isovaleric nevertheless lead to sensitization. Drug Interactions: The coumarin componant may theoreti- cally interact with warfarin, resulting in an additive antico- Thesen R, Phytotherapeutika - nicht immer harmlos. Untersuchung zur qualitativen und quantitativen Variabilitat des For mat reason, internal administration of the drug is Sesquiterepnelactongehaltes der offizinellen Arzneidroge. How Supplied: Commercial pharmaceutical preparations include gels, ointments, tinctures, oils and plasters. Arnica oil is an extract of 1 part herb and 5 Handbuch der Pharmazeutischen Praxis, 5. Heidelberg, New York, 1992- up to 15% Arnica oil or with 10 to 25% tinctures in a neutral 1994. Mouthwashes are prepared as a tincture in Hausen B, Allergiepflanzen, Pflanzenallergene, ecomed lOx dilution. Storage: When stored, die drug should be tightly sealed and Lewin L, Gifte und Vergiftungen, 6. Rom L, Daunderer M, Kormann K, Giftpflanzen, Pflanzengifte, Merfort I, (1984) Planta Med 50 (1):107. Mono-, di- and trimethylamine : only in the fresh plant due to their volatility Steinegger E, Hansel R, Pharmakognosie, 5. Betaine Teuscher E, Lindequist U, Biogene Gifte - Biologie, Chemie, Tannins Pharmakologie, 2. A double-blind Unproven Uses: Arrach is used internally and externally to randomized trial during the Oslo Marathon 1990. Flower and Fruit: The flowers are small, yellow-green and Flower and Fruit: The flowers are in pairs, 3. The fruit is enclosed by the tubular-fused corolla with 1 hanging and two erect tips. Characteristics: Arrach has a distinctive unpleasant smell of Leaves, Stem and Root: The plant is a herbaceous perennial, musty herring brine. The rhizome produces, along with the usual root, a Habitat: Europe, northern Africa and the Caucacus sturdy, fusiform, swollen, up to 8 cm thick and 35 cm long Production: Arrach is the complete flowering plant of tuber. They have long sheaths and up to 13 Artemisia absinthium cm long and 6 cm ovate-lanceolate leaf blades. See Wormwood Habitat: The plant is indigenous to Central America and is found today in all tropical regions around the world. The rhizome is washed, peeled and macerated, and See Wormseed the starch is then extracted, using water in a process of elutriation. Not to be Confused With: Cheaper starches, such as potato, Artemisia dracunculus maize, wheat, or rice starch. Medicinal Parts: The medicinal parts are the dried whole or In humans, the drug is a demulcent and soothing agent. The epicalyx is ovate to gastrointestinal disorders, and also for diarrhea, especially in globose. The fruit is a pubescent achaene 4 to 5 mm in diameter and 7 to 8 Indian Medicine: Arrowroot is used in dysentery, diarrhea, mm long. The No health hazards or side effects are known in conjunction stalk is up to 2 m high, thickly covered in lanceolate, prickly witfi the proper administration of designated therapeutic pinnate to double pinnate leaves. Artichoke leaf consists of the fresh or dried basal Hansel R, Keller K, Rimpler H, Schneider G (Hrsg. The main active principles are sesquiterpenes (amaroids), Fintelmann V, Antidyspetische und lipidsenkende Wirkung von hydroxy cinnamic acid and flavonoids. The cholesterol levels were reduced in the rats; a Erkenntnis zur Wirkung als Lipidsenker und Antidyspeptikum. Meding B, Allergic contact dermatitis from artichoke Cynara In folk medicine, Artichoke is also used for digestion scolymus. Because of the stimulating effect of the drug upon the biliary Schmidt M, Phytotherapie: Pflanzliche Gallenwegstherapeutika. Toxicol Appl Pharmacol, 144:279-86, 1997 Jun Leaves, Stem and Root: Arum maculatum is a 30 to 60 cm spit- to arrow-shaped plant.
Testing for Differentially- Expressed Genes by Maximum-Likelihood Analysis of Microarray Data 300 mg zantac sale. Model-based analysis of oligonucleotides arrays: model validation generic zantac 300mg line, design issues and standard error application buy 300mg zantac. Time Course Analysis of Microarray Data for the Pathway of Reproductive Development in Female Rainbow Trout Statistical Analysis and Datamining, Vol. Microarray Analysis in Drug Discovery and Biomarker Identification 225 Lonnstedt, I. Accurate Ranking of Differentially Expressed Genes by a Distribution-Free Shrinkage Approach. Statistical tests for identifying differentially expressed genes in time-course microarray experiments. A multivariate empirical Bayes statistic for replicated microarray time course data. Significance Analysis of Microarrays Applied o Transcriptional Response to Ionizing Radiation. Discovery of adrenomedullin in rat ischemic cortex and evidence for its role in exacerbating focal brain ischemic damage. Hidden Markov Models for Microarray Time Course Data in Multiple Biological Conditions. Introduction Ensuring analgesia both intraoperatively and postoperatively by the administration of local anesthetics or opioid through epidural catheter is a widespread method. On the other hand, after thoracic and major abdominal surgery, optimal perioperative anesthesia and analgesia can be provided through thoracic epidural analgesia and thus, postoperative morbidity and mortality can be decreased specifically by blocking sympathetic nerve fibers (1). In spite of the availability of epidural technique, in cases of the inadvertent administration of nonepidural medications into the epidural space, serious morbidity and mortality can be caused by a direct drug or drug-additive neurotoxic, pH, or osmolality effect (2). In literature, there are several reports of various substances infused through epidural catheter inadvertently (2-10). However, there have been no reports describing inadvertent administration of dopamine through epidural catheter as in the case we present here. All hemodynamic data were within normal limits with the help of inotropic support. It is our policy to use thoracal epidural anlgesia for all patients following open heart surgery. The catheter is placed a night before the operation after getting informed consent. The infusion liquid that is administered through the epidural catheter in order to ensure analgesia in the patient in the postoperative period in intensive care unit is prepared as 100 mg of mepedrine in 50 mL of isotonic solution and according to the clinical status of the patient, the infusion speed of the infusion device is adjusted as *Corresponding Author 228 Medicinal Chemistry and Drug Design 0. After 10 hours following the operation, while there was no instability regarding his hemodynamical status, he suddenly started to complain of severe abdominal pain and dizziness followed by vomiting with intervals of two or three seconds. His physical findings were evaluated as normal except tachycardia and high blood pressure. He had no abnormal abdominal findings and there was no reason for projectile vomiting. Both of them, besides laboratory findings, revealed no positive answer to what caused all these suddenly developed symptoms. The constrained period lasted for about 20 minutes until it was recognized that a nursing mistake had been made while transferring the meperidine mixed solution into microperfusion device. Dopamine solution had been placed into perfusion device instead of meperidine solution and the patient had received 5 μg/kg/min of dopamin through epidural catheter for 20 minutes. The intravenous infusion liquid that contains dopamine is prepared as 200 mg of dopamine in 50 mL of isotonic solution and the infusion speed is adjusted according to the clinical status of the patient. Once the nursing mistake was discovered, the records were studied and it was understood that the patient’s complaints had started about 7 minutes after the onset of the infusion of dopamine through epidural catheter. The patient’s complaints started to improve 3 minutes after the discontinuation of the infusion and eventually all the symptoms disappeared. The patient’s follow-up was uneventful during his stay in intensive care unit and he was discharged from the hospital in the 5th post-operative day. A long-term follow-up including all laboratory evaluations revealed no abnormal findings. Besides, there were no pathological findings in the neurological examination of the patient during the 6-month-period following the operation. Discussion Thoracic epidural anesthesia which is followed by postoperative epidural analgesia is increasingly being used for abdominal, major vascular and cardiothoracic surgery. The main merit of thoracic epidural postoperative analgesia is the optimal analgesia which it provides for several days and its minimal side-effects without the need for rescue medication (11). Segmental sympathetic block and analgesia are among the potential mechanisms for thorasic epidural analgesia that may influence mortality and myocardial infarction after coronary artery bypass graft surgery in a favorable way (12). It has been reported that the use of local anesthetics in thoracic epidural analgesia may reduce myocardial oxygen demand by way of decreasing heart rate, inotropy, and systemic vascular resistance (13). It has also been reported that thoracic epidural anesthesia may improve myocardial oxygen supply by dilating stenotic coronary arteries (14). Fewer arrhythmic episodes and postoperative myocardial infarction were reported, and patients could be extubated earlier with the aid of thoracic epidural analgesia. The risk of pulmonary complications is Supraventricular Tachycardia Due to Dopamine Infused Through Epidural Catheter Accidentally (A Case Report and Review) 229 decreased by optimized pain control and early mobilization, and this results in a shortened stay in intensive care units. When combined with early enteral nutrition, thoracal epidural analgesia ensures an earlier return of gastrointestinal function. It has been reported that patients treated with thoracic epidural anesthesia and analgesia have a better health-related quality of life (1). However, apart from all these advantages, in patients who have undergone full anticoagulation for cardiopulmonary bypass, the risk of spinal hematoma associated with central neuraxial analgesia is still unknown (12).
Laboratory practical knowledge of the students will be tested at the end of the first semester as part of the Closing Lab generic zantac 300mg online, evaluation with two level marks (accepted or not accepted) buy discount zantac 300mg online. As a precondition of attending the Closing Lab discount zantac 300mg with mastercard, the fully completed Exercise Book (with all the verified topics) must be presented during the Closing Lab. Students are expected to perform the given experiment on their own and must be familiar with theoretical background also. If the final evaluation of the Closing lab is "Not Accepted", then the student will be given laboratory practical questions on the end-semester examination. If the final evaluation of the Closing lab is "not accepted", then the student will be given laboratory practical questions, too. Gross anatomy of the brain stem and Demonstration of the cerebral hemispheres and its structures. Opening of the vertebral canal on a membranes is followed by surface separate torso. Demonstration: blood portion of the lateral ventricle, then its frontal supply of the brain. Spinal cord Establish the position of the temporal horn with (Golgi impregnation) 4. Remove the intracellular labeling trunk of the corpus callosum, cut and fold back the fornix. Explore the The structure and pathways of the pons and brainstem by removing the remaining parts of the mesencephalon. Follow the Cut out a wedge-shaped part of the cerebellum instructions given at the dissection of the excised for the observation of the 4th ventricle. The basal ganglia and the significance of the central excitatory and cerebellum as part of the somatomotor system. The educational activities of the Neurobiology course include lectures, seminars and practices. Most of the regulations concerning these activities are specific to the individual departments and will be introduced by the respective education officers. In the detailed program of the course (which, in fact, corresponds to the list of requirements) as well as here, both the compulsory and suggested textbooks are listed. Note, however, that the requirements of the course include material delivered in the lecture hall only, not necessarily available in the recommended textbooks, while in other cases some information in the suggested textbook is not regarded as part of the exam material. Attendance of the lectures, seminars and practices is compulsory, although one may have five absences from the lectures and two absences of in the following distribution: neuroanatomy and neurohistology together: two absences; neurophysiology (seminar and practices) two absences together. If one collects six or more lecture absences (regardless of the reason of the absences) all the exam advantages are withdrawn without further notice. In the case of three or more absences from either the practices or seminars, the verification of the lecture book may be refused. Making up the missed seminars and practices may be possible, but the individual departments determine the actual procedure. If one meets the passing conditions (see below), the end-semester examination may be substituted with the result achieved on the basis of these tests (i. All three departments participate, however, in the second (week 10) and third (week 14) self-controls (both of them are written tests). If someone fails to reach the 60 % in the case of any of the subjects of a department then the student must take the examination on the appropriate subject(s) during the examination period (the actual dates will be determined later). The preconditions of the exam exemption: at least 6 points on histology practicum; at least 12 points on neuroanatomy oral/practicum and at least 12 points on the written tests. Four extra points can be collected from neurophysiology practicals on the 14th academic week during the Neurophysiology closing lab. Nevertheless, the maximum achievable neurophysiology score is 40 points and these extra 4 points are valid only and exclusively in the current academic year (students repeating Neurobiology can register for the end-semester neurophysiology closing lab again. Year, Semester: 2nd year/2nd semester Number of teaching hours: Lecture: 45 Seminar: 15 Practical: 30 1st week: Practical: Study on blood clotting Lecture: Levels of eucariotic gene expression. Practical: Fractionation and quantitative 2nd week: determination of plasma proteins. Significance and interrelationship between 6th week: metabolic, cytokine, hormonal and neuronal Lecture: Tumor suppressor genes and their regulation. Biochemistry of sensitivity of regulation: allosteria, substrate programmed cell death. Signalling Practical: Fractionation and quantitative pathways of nonpenetrating signals. The 7th week: adenylate cyclase and the phospholipase C Lecture: Stress proteins and enzymes in signalling pathway. Heat shock proteins and their The adenylate cyclase and the phospholipase C functions under normal circumstances. Coupling of signaling pathways 9th week: to the regulation of genes and to the actin Lecture: Biochemistry of the blood. Structure and transport, storage and distribution in the human functional domains of fibronectins. Molecular regulation of the iron level in tissue fibronectins, genetic background: cells: stability of transferrin receptor and ferritin alternative splicing. Other adhesion proteins (laminin, Practical: Study on neurotransmitters entactin, thrombospondin, von Willebrand factor, tenascin, etc). Limiting factors , inhibitors and activators of Requirements Requirements for signing the semester: attendance in laboratory practices and seminars. Attendance on the lectures is not compulsory, but recommended: in case of one lecture absence seminar bonus points are erased, in case of two lecture absences all collected points (control test points of the semester) are also erased.