By W. Asam. Concordia College, Ann Arbor Michigan. 2018.
Te risk of cancer of the prostate purchase 25 mg phenergan overnight delivery anxiety bc, estrogen receptor-positive tumours of the breast another cancer that is infuenced by hormones, in the same study. Te metabolism of digoxin in rats and humans Te cohort study in Norway reported a posi- involves stepwise hydrolytic cleavage of the digi- tive association with leukaemia and lymphoma toxoses to form digoxigenin bis- and mono-dig- combined. Digoxin has structural homology with Digoxin is possibly carcinogenic to humans steroid hormones, suggesting functional simi- (Group 2B). Te structurally related glycoside digi- Te Working Group recognized a possible toxin competes with estrogen for the rat uterine association between digoxin and an increased estrogen cytosolic receptor; however, no evidence incidence of endocrine-related human cancers. Consistent with an endocrine-medi- digoxin and an increased incidence of endo- ated mechanism, the increase in risk was largely crine-related human cancers (primarily breast) for estrogen receptor-positive tumours; further, suggests a mechanism that is estrogen recep- risk of uterus cancer was increased and cancer tor-mediated. Te evidence in and digitoxin act through estrogen-signalling humans favoured a promoter efect that is seen pathways was limited to a demonstration that only in current users. Te molecular targets associated with epidemiological studies, in particular, obesity. Tere is inadequate evidence in experimental Digoxin treatment is associated with an increased inci- animals for the carcinogenicity of digoxin. Aromaa A, Hakama M, Hakulinen T, Saxén E, Teppo Pharmacokinetic considerations for digoxin in L, Idä lan-Heikkilä J (1976). Lack of improvement in for the diagnosis and treatment of acute and chronic outpatient management of congestive heart failure in heart failure 2008: the Task Force for the Diagnosis and the United States. P-glycoprotein-mediated intes- estrogen-sensitive cancers–risks and possible ther- tinal and biliary digoxin transport in humans. Digoxin use and highlights: a review of digoxin and its use in contem- the risk of cancers of the corpus uteri, ovary and cervix. Acta Oncol, Gerlof T, Schaefer M, Johne A, Oselin K, Meisel C, Cascorbi 40(4):467–71. Br J Clin Pharmacol, Guan F, Ishii A, Seno H, Watanabe-Suzuki K, Kumazawa 17(3):353–5. Initial screening for Validation and application of a 96-well format solid- carcinogenicity of commonly used drugs. J Natl Cancer phase extraction and liquid chromatography-tandem Inst, 65(4):723–33. Digitoxin American Heart Association Task Force on Practice medication and cancer; case control and internal Guidelines; ; European Society of Cardiology dose-response studies. Development of a quantifcation Practice Guidelines (Writing Committee to Revise method for digoxin, a typical P-glycoprotein probe in the 2001 Guidelines for the Management of Patients clinical and non-clinical studies, using high perfor- With Atrial Fibrillation): developed in collaboration mance liquid chromatography-tandem mass spec- with the European Heart Rhythm Association and the trometry: the usefulness of negative ionization mode to Heart Rhythm Society. Metabolism of digoxin, digoxi- collaboration with the International Society for Heart genin digitoxosides and digoxigenin in human hepat- and Lung Transplantation. Te metab- glycosides by liquid chromatography-hybrid mass olism of digoxin in normal subjects. J Pharmacol Exp spectrometry for the purity assessment of the ther- Ter, 145:203–9. Inhibitory long-term digoxin accumulation in the brain by the efects of digoxin and ouabain on aldosterone synthesis mdr 1a P-glycoprotein. Management of atrial fbrillation: review Physiologically based pharmacokinetics of digoxin of the evidence for the role of pharmacologic in mdr1a knockout mice. Available Pharmacologic efect kinetics and apparent volume of from: http://reference. Mechanism of characterization of a digoxin transporter and its rat interaction of digitalis with estradiol binding sites in homologue expressed in the kidney. Interaction of digitalis and spironolactone with glycosides as novel cancer therapeutic agents. J Chromatogr tation of digoxin in human plasma and urine using A, 1216(15):3260–9. J Liquid Chromatogr Relat Technol, Pharmaceuticals and Medical Devices Agency (2011). Absence of the mdr1a P-Glycoprotein expression in mice: correlation with digoxin renal in mice afects tissue distribution and pharmacoki- clearance. Is digoxin a ciplinary study identifes digoxin as a possible drug for designer oestrogen?
This force is delivered via the piston to the drug reservoir buy cheap phenergan 25 mg line anxiety xanax forums, forcing the contents of the drug reservoir to exit through the orifice. Duros technology is demonstrating considerable promise for the controlled delivery of peptides and proteins. The use of non-aqueous vehicles to disperse peptides/proteins in the reservoir compartment is also being investigated. Although peptides and proteins are prone to degradation in aqueous solutions, adverse physicochemical reactions are sometimes avoided by dispersing them in a nonaqueous dispersion medium. Typical nonaqueous vehicles used in the drug reservoir compartment of the Duros implantable pump include waxes that soften around body temperature, hydrogenated vegetable oils such as peanut oil, sesame oil and olive oil, silicone oil, fatty acid monoglycerides or polyols. In addition, suspending agents, such as hydroxypropyl cellulose, poly(vinyl pyrrolidone) and poly(acrylic acid) are added to minimize the sedimentation rate of proteins inside the reservoir compartment. Such pumps were finally developed in the early 1980s and they allow physicians and patients to precisely control the infusion rate of a drug. Most implantable pumps are made of titanium which has proven records of excellent biocompatibility and long life. They are usually implanted intraperitoneally, in a pocket created in the abdominal wall of patients, under the subcutaneous fat layers, but above the muscular fascias. They are secured to the muscular fascia by suturing, which prevents pumps from flipping over or migrating in the pump pocket, thereby allowing patients to resume routine physical activities. Intraperitoneal insulin pump therapy is advantageous over a subcutaneous injection, as insulin infused into the peritoneal membrane surrounding abdominal organs is absorbed faster and more completely than via subcutaneous injection. Arterial or intraspinal delivery is also possible with a proper surgical procedure. A silicone rubber catheter is attached to the pumps, through which infusate is delivered to various body sites. The catheter is replaced if it becomes blocked, for example, by the deposition of infusate inside the lumen, fibrous tissue encapsulation or clotting at the tip. The major components are a miniature peristaltic pump, a drug reservoir (18 ml), a battery, an antenna, a microprocessor and a catheter through which infusate is delivered to a specific site. The infusion rate of a drug solution can be programmed by a portable computer with specialized software which transmits instructions by radiotelemetry to the pump. The pump is driven by a step motor, controlled by signals from the micropocessor and is capable of delivering infusate at varying rates (0. The programmer provides the implantable pump with versatile delivery patterns, including a straight continuous-flow pattern or a more complex pattern that allows a varying dose at different times of the day to meet the patient’s changing metabolic requirements. The SynchroMed pump is approved for use in: • chemotherapy (using floxuridine, doxorubicin, cisplatin, or methotrexate); • the treatment of chronic, intractable cancer pain (using morphine sulfate); • osteomyelitis treatment (using clindamycin); • spasticity therapy (using the muscle relaxant, baclofen). The pressure of the roller heads on the tubing in the peristaltic pump causes intensive shear stresses which lead to stability problems for labile peptides and proteins. A patented solenoid motor controls the piston movement, to aspirate insulin from the reservoir chamber into the piston chamber and then push it through the insulin delivery catheter. A hand-held programmer can change the pumping rate to administer the desired insulin dose to the diabetic patient. Many conventional insulin preparations are prone to denaturation when exposed to body fluids and temperature, or when agitated (see Section 1. The ensuing aggregation and precipitation may cause blockage of the catheter attached to the pump. However, the Minimed pump uses an insulin formulation, developed by Hoechst, which includes a small amount of Genapol (polyethylene glycol and polypropylene glycol), to increase the stability of the polypeptide. Infusate is placed in the inner drug reservoir chamber and Freon propellant in the outer chamber (Figure 4. When the Arrow pump is implanted subcutaneously, it is warmed by the patient’s body temperature so that the propellant-containing chamber expands and exerts pressure on the movable bellows. Infusate is thus forced out of the reservoir chamber to an attached catheter through a filter and flow restrictor. This mechanism allows the delivery of infusate at a fairly constant rate to surrounding tissues or blood vessels. It should be noted, however, that the vapour pressure exerted by the outer chamber can be affected by changes in altitude/elevation or body temperature. The Infusaid pump is another fixed-rate implantable pump that shares many similar features, including the Freon pumping principle, with the Arrow pump.
Tissues from all rats in the untreated discount 25mg phenergan with mastercard anxiety symptoms in 9 year old boy, vehicle control and high-dose groups were examined microscopically. In addition, the vaginas from all female rats at the low and intermediate doses were examined. Treatment with zidovudine did not affect the survival rate in either of the sexes, and the rate at 18 months was 50% or greater. Two squamous-cell carcinomas of the distal vagina were observed in females at the high dose, but no vaginal tumours occurred in the other groups, or in the untreated or vehicle control groups. Treatment with zidovudine did not affect the incidence of any other benign or malignant tumour in any tissue or organ examined [specific tumour incidences not reported] (Ayers et al. At weaning, zidovudine was admi- nistered to the offspring at the same doses in the drinking-water for 17–35 days and then by gavage for 24 months. Two additional groups were treated similarly with 40 mg/kg bw per day, but one group was treated only until day 21 of lactation and the second by gavage for 90 days after birth. Two groups each of 60 female mice were either untreated or were given the vehicle, beginning on day 10 of gestation and throughout gestation, parturition and lactation, and then in the drinking-water for 17–35 days, followed by daily gavage for 24 months. The study was designed to give a total of 70 male and 70 female progeny in each dose group. No treatment- related increase in the incidence of neoplastic or non-neoplastic lesions was observed in males [specific tumour incidences not reported]. Ten pups of each sex from each group were killed 13, 26 and 52 weeks after delivery. At week 52, the observation of lung and liver tumours prompted the authors to kill additional mice and to report the results. The numbers of mice in each group were 31 male controls and 23 and 26 at the low and high doses and 30 female controls and 22 and 24 at the low and high doses. In the two sexes combined, the incidence of lung carcinomas was 3% in controls, 7% at the low dose and 14% at the high dose (p = 0. Neoplasms of the ovary, uterus and vagina were seen in 0% of controls, 14% at the low dose and 17% at the high dose (p = 0. The incidence of hepatocellular tumours (mainly adenomas) was increased in males, being about 13% in controls, 30% at the low dose and 52% at the high dose; the multiplicity of hepatocellular tumours was 0. Most (82%) of the skin tumours were papillomas; the rest (18%) were keratoacanthomas (Zhang et al. Two additional groups of 50 female mice were either left untreated or were given the vehicle intravaginally. Vaginal squamous-cell carcinomas were observed in 2/50 mice at the low dose and 13/50 at the high dose [p < 0. Vaginal epithelial-cell tumours were not seen in either control group (Ayers et al. All groups also received subcutaneous injections of 500 or 5000 U α-interferon three times per week for 105 weeks. Survival rates and body weights were similar in treated and vehicle control groups. The incidences of squamous-cell carcinoma of the vagina in the groups receiving 500 U α-interferon were 0/49, 0/44, 5/48 (p = 0. Epithelial hyperplasia of the vagina was seen in 0/49 controls and 4/44, 8/48 and 12/48 at the three doses, respectively (p = 0. In the groups receiving 5000 U α-interferon, the incidences of squamous-cell carcinoma or papilloma (combined) of the vagina were 1/50, 1/48, 5/48 and 4/50 (p = 0. There was no significant increase in the incidence of tumours at other sites (National Toxicology Program, 1999). The half-time for removal of the drug from plasma is about 1 h, and the clearance rate is 5–12. The renal clearance rate has been reported to be about 12 L/h for zidovudine and 18 L/h for 3′-azido-3′- deoxy-5′-O-α-D-glucopyranosyl-thymidine (Morse et al. These values are reduced in patients with compromised renal function (Dudley, 1995; Acosta et al. In patients with normal kidney and liver function, the pharmacokinetics of zidovudine is similar after the first dose and during long-term dosing (Gallicano et al.
Various writers have invested the techniques of interrogators with the magic of science by attaching technical labels to what actually have been traditional and pragmatic practices (2) cheap phenergan 25mg on-line anxiety definition. In assuming the attitude of the "hard-headed" scientist toward the problem, there is a danger in falling into an equivalent misuse of science. This would be the case were one, in effect, to attempt to counter those who present a diabolical image of the "brainwasher" by invoking superior scientific deities to frighten this specter away. Thus, magical thinking and projections, as has been indicated, pervade prevalent judgments regarding the significance of the behavioral alterations that interrogators can effect. By substituting impassive scientific names for ordinary language with its intense connotations for human values, the impression may be given of eliminating not only these extravagant judgments but also almost all the human significance of these effects. Difficulties inhere in dealing scientifically with a problem that relates so immediately to basic human values. Assumptions in this work hold the person against whom the interrogation efforts are -6- directed — who is designated following common intelligence usage as "the source" — to be highly motivated to safeguard the information; and that, at least initially, the source regards denying information to his interrogator as "more important than life itself. Similarly, Western jurisprudence recognizes that lengthy interrogation, even without physical coercion, can produce "unwilling" confessions, true or false, of capital crimes. Divergent interpretations have been placed on reported cases of individuals who have resisted very intensive interrogations without divulging information. Some use it to demonstrate the existence of an unconquerable, inextinguishable human will. Others regard the instances of successful resistance to interrogation as mere illustrations of remediable deficiencies in interrogation technique. Neither this nor any other scientific volume, in the opinion of the editors, can resolve the differences implicit in these two orientations, or yet other interpretations. On the basis of scientific tests alone, they are difficult to resolve even with a completely deterministic set of assumptions. As the approach of this review illustrates, for any given set of motivations of the source, however powerful, one can at least speculate about possible manipulations to overcome them. On the other hand, it is possible to speculate about methods of heightening motivations and defenses against any conceivable manipulative assault. Exclusively scientific tests probably cannot foreclose either possibility at this time. Another important qualification to conventional ideas about the ultimate limits of the control of human behavior will become apparent in some of the discussions that follow. The purposes that men have in seeking to control, or to influence, the behavior of others involve the distinctively human capabilities of men and their significance for one another. The major fallacy of the totalitarian interrogator grows out of a poor appreciation of this fact. Some of the chapters here indicate that there are limits to which the ability of a source to reveal information can be separated from his willingness to do so. The analytic divisions we make between such aspects of mental activity as the recall and transmittal of information on the one hand and motivations on the other do not correspond to behaviors that are totally independent of one another in the organism. The fallacy of belief in the possibility of total control for any purpose stands out as bizarre in the extreme when acted on by those whose purposes involve the control of self-initiated behavior. An example, simultaneously tragic and ridiculous, is the ideological interrogation. A system in which mental conformity is sought through coercion and manipulation embodies an ever-present fear on the part of the controllers that conformity will be based on opportunism rather than conviction. In oppressive ideological systems, such as modern Communism, which demand "true sincerity" from their subjects rather than mere outward conformity, the inquisitorial process appears to be a natural development. In a vicious circle, coercion is used to produce conformity, generating fears that the conformity produced is insincere, generating in turn further coercion to make it "sincere. Under these circumstances, the ultimate test of the loyalty and sincere devotion of the individual to the system is his acceptance of the inquisitorial process itself: the purge, coercion, confession, and the entire paraphernalia of enforced conversion. Malleus Maleficarum (22, page 212) provides an illustration of the manner in which the victim is compelled to adopt the frame of reference of the inquisitor: He [the suspected witch] must be asked if he believes that there are such things as witches, and that such things as were mentioned could be done, as that tempests could be raised or men and animals bewitched.