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Mouse drug study results and what they mean for patients will be published in each newsletter. For more in-depth, complete and up-to-date information on each drug study, please visit our website at als-tdf, for example, clozapine overdose.
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Several treatment options for drug-induced weight gain are available. Non-pharmacological interventions include dieting, exercise, and behavioral therapy. Pharmacological measures include decreasing the drug dose, if possible, and changing to an agent with less propensity to cause weight gain. Weight reduction drugs can be considered e.g., sirbutamine ; , but, in general, polypharmacy should be avoided because there is a potential risk for exacerbation of psychotic symptoms. There is little published research on managing weight gain caused by atypical agents. Glucose Dysregulation. As with weight gain, early reports documented elevations in blood glucose after treatment with conventional antipsychotic agents. So called "phenothiazine diabetes" was known to occur with drugs, such as chlorpromazine. However, an increasing number of case reports and retrospective studies have now documented hyperglycemia, diabetic ketoacidosis, and new-onset diabetes mellitus DM ; with atypical antipsychotic drugs. Although not conclusive, there appears to be a strong association between atypical agents and possible drug-induced DM. Whether these agents precipitate subclinical DM or disrupt glucose homeostasis, the potential mechanism is unclear. In addition, disruptions in glucose metabolism may occur secondarily to drug-induced weight gain. However, not all suspected cases of atypical agent-induced DM involve patients who have gained significant weight. Nevertheless, the atypical agents that have been the most frequently reported to cause disruptions in glucose homeostasis clozapine and olanzapine ; are those associated with the greatest weight gain potential and show the greatest structural similarities. Presently, risperidone and quetiapine appear no more likely than conventional agents to cause perturbations in glucose homeostasis. Although only preliminary data exist, risk factors for atypical agent-induced DM include male gender, African descent, and family history of DM. The phenomenon does not appear to be dose related. Treatment of suspected drug-induced DM should include prompt discontinuation of the suspected agent if clinically practical; a change to another agent less likely to produce this effect, dietary modification, and or weight reduction; or initiation of a hypoglycemic treatment regimen as indicated. Elevated Triglyceride Levels. Many recently published studies have documented significantly elevated fasting triglyceride levels in patients receiving atypical agents compared to control groups receiving conventional antipsychotic agents e.g., haloperidol ; . Cholesterol is unaffected. As with the reports of glucose dysregulation, available published literature suggest clozapine and olanzapine as the most likely drugs to result in hypertriglyceridemia followed by quetiapine. Risperidone appears to be relatively free of this metabolic effect, whereas, of interest, ziprasidone treatment may actually decrease plasma triglyceride levels and cholesterol Table 1-4 ; . The mechanism of atypical agent-induced hypertriglyceridemia is presently unknown and the effect does not appear to be dose related. Although there is an association between obesity and hypertriglyceridemia, not all patients who have experienced elevated triglyceride levels with atypical agents have experienced substantial weight gain or had baseline obesity. Hypertriglyceridemia Psychoses.
Overall, J. & Gorham, D. E. 1962 ; The brief psychiatric rating scale. Psychological Reports, 10, Reports, 10, 799 812. Pilowsky, L. S., Mulligan, R. S., Acton, P. D., et al 1997 ; Limbic selectivity of clozapine. Lancet, 350, Lancet, 350, Montgomery, S. A. & sberg, M. 1979 ; A new.
1. Young CR, Bowers MB, Mazure CM. Management of the adverse effects of clozapine. Schizophrenia Bulletin 1998; 24 3 ; : 381-390. Hayes G, Gibler B. Clozapine-induced constipation. J Psychiatry 1995; 152 2 ; : 298. Management of clozapine-induced constipation. Graylands Hospital Drug Bulletin 1998; 7 1 ; . Drew L, Herdson P. Clozapihe and constipation: a serious issue. Aust NZ J Psychiatry 1997; 31 1 ; : 149-150. Levin TT, Barrett J, Mendelowitz A. Death from clozapineinduced constipation: case report and literature review. Psychosomatics 2002; 43 1 ; : 71-73. Theret l, Germain ML, Burde A. [Current aspects of the use of clozapine in the Chalons-sur-Marne psychiatric hospital: intestinal occlusion with clozapine]. [French]. Annales Medico-Psychologiques 1995; 153 7 ; : 474-477. Tang WK, Ungvari GS. Clozapine-induced intestinal obstruction. Aust NZ J Med 1999; 29 4 ; : 560. Lu MK. Clinical analysis in the main side effects of clozapine: enclosed 600 cases report]. [Chinese]. [Chinese Journal of Neurology and Psychiatry] 1991; 2492 ; : 71-74. Erickson B, Morris DM. Clozapine-associated postoperative ileus: case report and review of the literature. Arch Gen Psychiatry 1995; 52 6 ; : 508-509. Freudenreich O, Goff DC. Colon perforation and peritonitis associated with clozapine. J Clin Psychiatry 2000; 61 12 ; : 950-951. Schwartz BJ, Frisolone JA. A case report of clozapineinduced gastric outlet obstruction. J Psychiatry 1993; 150 10 ; : 1563. Shammi CM, Remington G. Clozapine-induced necrotizing colitis. J Clin Psychopharmacol 1997; 17 3 ; : 230-231. Simpson GM, Pi EH, Sramek JJ. Neuroleptic and antipsychotic drugs. In: Dukes MNG, Aronson JK, editors. Meyler's side effects of drugs. 14th ed. Amsterdam: Elsevier Science B.V.; 2000. p.139-163. Ausser A, Leroy C, Bazin B, Sarraz-Bournet B, Oureib J, Georges H. [Acute necrotizing enterocolitis during a prolonged treatment with neuroleptic]. [French]. Presse Medicale 1995: 24 12 ; : 577-579. Hay Am. Association between chlorpromazine therapy and necrotizing colitis: report of a case. Dis Colon Rectum 1978; 21 5 ; : 380-382. deSilva P, Deb S, Drummond Rd, Rankin R. A fatal case of ischaemic colitis following long-term use of neuroleptic medication. J Intellect Disabil Res 1992; 36 4 ; : 371-375. Patel Yj, Scherl ND, Elias S, Chessler RK, Zingler BM. Ischaemic colitis associated with psychotropic drugs. Dig Dis Sci 1992; 37 7 ; : 1148-1149. Gollock JM, Thomson JP. Ischaemic colitis associated with psychotropic drugs. Postgraduate Medical Journal 1984; 60 706 ; : 564-565. Giordano J, Canter JW, Huang A. Fatal paralytic ileus complicating phenothiazine therapy. Southern Medical Journal 1975; 68 3 ; : 351-353. Gaszner G, Kosza P. [Paralytic ileus during haloperidol therapy] [abstract]. [Hungarian]. Neuropsychopharmacologica Hungarica 2004: 6 1 ; : 36-38. Feneyrou B, Alauzen M, Bourgine N, Carabalona P. [Necrotizing colitis caused by neuroleptics]. [French]. Gastroenterol Clin Biol 1985; 9 8-9 ; : 635-636.
Clozapine weight gain
3.2. intervene in time in order to prevent any Abuse of horse by riders, grooms, owners or any other person; 3.3. intervene in order to prevent any contravention of the Statutes, Regulations or Rules or of the common principles of behaviour, fairness and accepted standards of sportsmanship; 3.4. be familiar and assist with medication control procedures. 4. use. One Steward must be on duty at the collecting ring whenever it is in and mebeverine.
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A total of 1032 days were monitored with a mean duration of 54 8 days per patient. 1290 openings were recorded whereas 1499 were expected 86.0% of the prescribed doses ; . The mean adherence rates as well as the individual adherence rates are summarised in table 1. Pc data yielded an adherence rate of 96.8 19.6% range: 34.7 132.7% ; , with seven patients taking more tablets than prescribed. Three patients returned the exact number of pills 100% adherence ; . MEMSd number of bottle openings divided by prescribed openings in percent ; was 92.6 19.9% range: 34.5111.0% ; , with eight patients opening the bottle more often than prescribed. MEMSr number of days with correct openings in percent ; was 78.6 28.3% range: 11.2100.0% ; . The mean value given for Sr on medication accuracy was 8.3 1.2 with 9 being the best value on a visual analogue-scale ranging from 1 to 9 ; , whereas Sr concerning diet yielded a mean score of 6.9 2.0 on the same scale ; . Correlations between the different measurements of adherence are shown in table 2. Pc data correlated significantly with MEMSd r 0.560, p 0.0114 ; . MEMSd correlated well with Sr adherence rates concerning diet r 0.637, p 0.0026 ; , but it did not correlate significantly with Sr adherence rates concerning tablet intake r 0.367, p 0.1231 ; . The best correlation was found between MEMSd and MEMSr r 0.864, p 0.0001 ; . A very weak partial correlation coefficient was found between Pc and MEMSr rpartial 0.096 ; , indicating that a combination of these two parameters could be especially helpful in identifying non-compliers. To assign patients to categories the "compliant" and "non-compliant", a definition proposed by other authors [15, 16], was applied: If the patient achieved an adherence rate of 90% he was considered compliant. Assessed by Pc as well as by MEMSd, 15 patients 78.9% ; were compliant table 3 ; . Assessed by MEMSr on the other hand, only nine patients 47.4% ; were compliant. Of the ten patients identified as non-compliant by MEMSr, five 26.3% ; would have been misclassified as compliant if only Pc or MEMSd had been considered. Pill counting detected 40%, MEMSd 40% and MEMSr detected 100% of non-compliers identified by one or more methods. Combining Pc and MEMSd 50% of non-compliers were detected. Eight patients 42.1% ; had an adherence rate of 100% assessed by MEMSd. Over-adherence with sulfonylureas can lead to serious side effects hypoglycaemia ; . Therefore, as an alternative, an upper limit for adherence was also set, and adherence rates of 90110% were considered compliant.
On average, individuals who use weight loss drugs lose about 5 percent to 10 percent of their original weight, though some will lose less and some more, says the fda's colman and lamivudine.
Both urinary incontinence and urinary retention and, in a few cases, priapism have been reported. Very rarely, cases of acute interstitial nephritis have been reported in association with clozapine therapy. Respiratory Respiratory depression or arrest has been reported rarely, with or without circulatory collapse See Precautions, Orthostatic hypotension and Interactions with Other Drugs ; . Rarely, aspiration of ingested food may occur in patients presenting with dysphagia or as a consequence of acute overdosage. One case of allergic asthma has been reported. Metabolic Hyperthermia not related to NMS ; may occur, especially in the initial weeks of treatment. The overall incidence is 5%; individual studies have reported incidences of up to 20% see also Precautions ; . Increases in creatinine phosphokinase have been reported rarely. Endocrine Severe hyperglycaemia, sometimes leading to ketoacidosis hyperosmolar coma, has been reported rarely during clozapine treatment in patients with no prior history of hyperglycaemia see Precautions ; . With prolonged treatment, considerable weight gain has been observed in some patients. Dermatological Isolated reports of skin reactions have been received. Other Sudden, unexplained deaths are known to occur among psychiatric patients who receive antipsychotic medication as well as those who do not. Isolated cases of such deaths have been reported in patients receiving clozapine. Rare and rare very rare reactions are those that have been reported at an incidence of 0.1% and 0.01% of cumulated adverse reactions respectively. ; 8 Dosage and administration See also Precautions ; . The dosage must be adjusted individually. For each patient the lowest effective dose should be used. Appropriate resuscitative facilities should be available and the patient adequately supervised during initiation of therapy. The recommended dosages which follow are for oral administration. Starting therapy 12.5 mg half of a 25 mg tablet ; once or twice daily on the first day, followed by one or two 25 mg tablets on the second day. If well tolerated, the daily dose may then be increased slowly in increments of 25 to mg in order to achieve a dose level of up to 300 mg day within two to three weeks!
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2. SHARE YOUR KNOWLEDGE. As a health worker, your first job is to teach. This means helping people learn more about how to keep from getting sick. It also means helping people learn how to recognize and manage their illnesses--including the sensible use of home remedies and common medicines. There is nothing you have learned that, if carefully explained, should be of danger to anyone. Some doctors talk about self-care as if it were dangerous, perhaps because they like people to depend on their costly services. But in truth, most common health problems could be handled earlier and better by people in their own homes.
T B E1 SWORT DRUG INTERACTIONS Hypericum perforatum ; 26, 33, 36, A L . TJ St. John's Wort induces or potentially induces the metabolism of the following substrates, which may decrease serum level of drug: 1. P-450 2C9 or CYP 2C9 substrate Speculative-direct significance not established--additional research needed ; 2. P-450 1A2 or CYP 1A2 substrate Significance not established--additional research needed ; 3. P-450 3A4 or CYP450 3A substrate Interaction of drugs cleared by CYP450 3A reported clinical significance established ; 4. Induction of P-glycoprotein 8. P-450 2D6 or CYP 2D6 substrate Speculative-direct significance not established--additional research needed ; Other Interactions: 5. Case reports Clinical studies 6. Possible serotonin excess 7. Increased risk of photosensitivity 5-Hydroxy-Tryptophan 6 Achromycin 7 Actiq 3 Accutane 7 Adriamycin 3 Agenerase 3, 4 Adalat 3, 4 Alfenta 3 Alfentanil 3 Allegra PGP 3 Alprazolam 3, 5 no study interaction - small sample size, short duration ; Amaryl 1 Ambien 3 Amerge 6 Amiodarone 3 Amitriptyline 5, 7, 8 Amlodipine 3 Amprenavir 3, 4 Anafranil 8 Ansaid 1 Antidepressants 6 Aricept 8 Atorvastatin 3 Aventyl 8 Avita 7 Benzodiazepines 3 Certain Long Acting ; Bepridil 3 Beta Blockers, Various Betimol 8 Biaxin 3 Bisoprolol 8 Calan 2, 3, 4 Calcium Channel Blockers 3 Carbamazepine 3 Cardene 3 Cardizem 3 Cataflam 1 Celexa 6 Chlorpromazine 7 Cisapride 3 Citalopram 6 Clarithromycin 3 Claritin 3 Clomipramine 8 Clonazepam 3 Clozwpine 2, 8 Clozaril 2 Codeine 8 Cognex 2 Cordarone 3 Corticosteroids 3 Cortisone 3 Cortone 3 Coumadin 1, 2, 3 Cozaar 1, 3 Crixivan 3 Cyclobenzaprine 2, 3, 8 Cyclophosphamide 3 Cyclosporine 3, 4, 5 Cytoxan 3 Dapsone 1, 3 Decadron 3, 4 Delavirdine 3 Deltasone 3 Desipramine 8 Desoxyn 8 Desyrel 6 Dexamethasone 3, 4 Dextromethorphan 3, 5, 8 No study interaction small sample size, short duration ; Diazepam 2, 3 Diclofenac 1 Digitoxin 4 Digoxin 4, 5 Dilantin 1 Diltiazem 3 Disopyramide 3 Donepezil 8 Doxorubicin 3 Doxycycline 7 Duragesic 3 Dynacirc 3 Efavirenz 3 Effexor 6 Elavil 2, 3, 7 Elixophyllin 2 Erythromycin 3, 4 Estrogens 2, 3 Ethinyl Estradiol 3, 5 Etopophos 3 Etoposide 3 Eulexin 3 Felbamate 7 Felbatol 7 Feldene 1, 7 Felodipine 3 Fentanyl 3 Fexofenadine 3, 4 Finasteride 3 Flecainide 8 Flexeril 2, 3 Flurbiprofen 1 Flutamide 3 Fluvastatin 1 Fluoxetine 6, 8 Fluvoxamine 6 Fortovase 3, 4 Gantanol 1 Glimepiride 1 Glipizide 1 Grifulvin 7 Grisactin 7 Griseofulvin 7 Glucotrol 1 Granisetron 3 Haldol 2, 3 Haloperidol 2, 3, 8 Hydrocodone 8 Ifex 3 Ifosfamide 3 Ilotycin 3, 4 Ibuprofen 1 Imipramine 2, 3, 8 Imitrex 6 Imodium 4 Inderal 2 Indinavir 3, 5 Interferon 7 Ivermectin 4 Invirase 3, 4 Isoptin 2, 3, 4 Isotretinoin 7 Isradipine 3 Ketoconazole 3, 4 Klonopin 3 Kytril 3 L-Tryptophan 6 Lamisil 3, 4 Lanoxin 4 Lescol 1 Lidocaine 3 Lipitor 3 Loperamide 4 Lopressor 3 Loratadine 3 Losartan 1, 3 Lovastatin 3 Luvox 6 Macrolide Antibiotics 3 Maois 6 Maprotiline 8 Maxalt 6 Medrol 3 Mellaril 8 Mellaril-S 8 Methadone 3, 8 Methadose 3 Methylprednisolone 3 Metoprolol 3, 8 Mevacor 3 Mexiletine 8 Mibefradil 3 Miconazole 3 Midazolam 3 Monistat 3 Morphine 4, 8 Ms Contin 4 Mycobutin 3 Naprosyn 1 Naratriptan 6 Nardil 6 Naproxen 1 Nefazodone 3, 5 1 case report-elderly patient ; Nelfinavir 3, 4 Nevirapine 3 Nicardipine 3 Nifedipine 3, 4 Nimodipine 3 Nimotop 3 Nisoldipine 3 Nizoral 3, 4 Nolvadex 1, 3, 4 NNRTIS metabolized similar to protease inhibitors ; Norpramin 8 Nortriptyline 8 Norpace 3 Norvasc 3 Norvir 3, 4 Nsaids 1 Olanzapine 2 Oncovin 3, 4 Ondansetron 3, 4 Oral Contraceptives 3, 5 Orinase 1 Oxycodone 8 Oxycontin 8 Oxyir 8 Paclitaxel 3, 4 Pamelor 8 Paracetamol 2, 3 Paroxetine 6, 8 Paxil 6 Percolone 8 Phenelzine 6 Phenprocoumon 5 Phenytoin 1 Photofrin 7 Pimozide 3 Piroxicam 1, 7 Plendil 3 Porfirmer 7 Posicor 3 Prednisone 3 Procardia 3, 4 Prograf 3 Propafenone 8 Propranolol 2, 8 Propulsid 3 Proscar 3 Protease Inhibitors 3, 4 Prozac 6 Quinaglute 3, 4 Quinine 3 Quinidine 3, 4 Renova 7 Requip 2 Reserpine may sleep ; Rescriptor 3 Restoril 3 Retin-A 7 Retinoic Acid 3 Rifabutin 3 Risperdal 8 Risperidone 8 Ritonavir 3, 4 Rizatriptan 6 Ropinirole 2 Roxicodone 8 Rythmol 2, 3, 8 Sandimmune 3 Saquinavir 3, 4 Seldane 3, 4 removed from U.S. market in 1998 ; Sertraline 3, 5 4 case reports-elderly patients ; Serzone 3 Sildenafil 3 Simvastatin 3 Ssris 6 Steroids 3 Sufenta 3 Sufentanil 3 Sular 3 Sulfa Drugs 7 Sulphamethoxazole 1 Sular 3 Sulfa Drugs 7 Sulphamethoxazole 1 Sumatriptan 6 Sumycin 7 Tacrine 2 Tacrolimus 3 Tambocor 8 Tamoxifen 1, 3, 4 Taxol 3, 4 Tegretol 3 Temazepam 3 Teniposide 3 Terbinafine 3, 4 Terfenadine 3, 4 Not in the U.S. market as of '98 ; Testosterone 3 Tetracycline 7 Theophylline 2, 5 Thioridazine 8 Thorazine 7 Timolol 8 Timoptic 8 Tofranil 2, 3 Tolbutamide 1 Toprol 3 Tramadol 8 Trazodone 6, 8 Tretinoin 7 Triptans 6 Troleandomycin 3 Ultram 8 Valium 2, 3 Vascor 3 Velban 3, 4 Venlafaxine 6, 8 Vepesid 3 Verapamil 2, 3, 4 Verelan 2, 3, 4 Versed 3 Viagra 3 Vibramycin 7 Vinblastine 3, 4 Vincasar 3, 4 Vincristine 3, 4 Viracept 3, 4 Viramune 3 Voltaren 1 Vumon 3 Warfarin 1, 2, 3, Xanax 3 no study interaction - small sample, short duration Xylocaine 3 Zebeta 8 Ziac 8 Zocor 3 Zofran 1, 3, 4 Zolmitriptan 6 Zolpidem 3 Zoloft 3 Z mg 6 oi TM Zonegran 3 Zonisamide 3 Zyprexa 2 and compazine.
A number of antipsychotic medications have been approved by the FDA to treat bipolar disorder. These medications are called antipsychotics because they were were first approved for the treatment of psychotic symptoms, such as hallucinations and delusions, that may occur in disorders such as schizophrenia or severe depression or mania. There are 2 kinds of antipsychotics: older antipsychotics called typical or conventional antipsychotics ; and newer antipsychotics called atypical or second-generation antipsychotics ; . Older antipsychotics, such as haloperidol Haldol ; , perphenazine Trilafon ; , and chlorpromazine Thorazine ; , can cause a permanent movement disorder called tardive dyskinesia TD ; and may also cause muscle stiffness, restlessness, and tremors. For this reason, the older antipsychotics are not usually a first-choice treatment, but they can sometimes be helpful for patients who do not respond to or have troublesome side effects with the newer atypical antipsychotics. The atypical antipsychotics have a much lower risk of causing TD roughly 1% per year ; and movement and muscle side effects. Because of this, they are usually the first choice in any situation when an antipsychotic is needed. The atypical antipsychotic medications have been found to be effective in treating bipolar mania even when no psychotic symptoms are present, so that they are now considered mood stabilizers as well as antipsychotics. Five of these agents are currently approved by the FDA for use in bipolar mania: aripiprazole Abilify ; olanzapine Zyprexa ; quetiapine Seroquel ; risperidone Risperdal ; ziprasidone Geodon ; Another atypical antipsychotic, vlozapine Clozaril ; , is also available. However, it can cause a rare and serious blood side effect, requiring weekly or biweekly blood tests, so that it is only used when patients have not responded to other antipsychotics. Some of the atypical antipsychotics can cause side effects such as drowsiness and weight gain. Weight gain is most often associated with clozapije and olanzapine, followed by risperidone and quetiapine, while ziprasidone and aripiprazole have the lowest risk of weight gain. Because substantial weight gain can increase the risk for type II diabetes mellitus, the American Diabetes Association recommends that weight, blood sugar, and cholesterol levels be monitored in patients taking atypical antipsychotics.
COOPER, G., R. L. KENT, C. E. UBOH, E. W. THOMPSON, AND T. A. MARINO. Hemodynamic versus adrenergic control of cat right ventricular hypertrophy. J. Clin. Inuest. 75: 1403-1414, 1985.-The purpose of this study was to determine whether cardiac hypertrophy in response to hemodynamic overloading is a primary result of the increased load or is instead a secondary result of such other factors as concurrent sympathetic activation. To make this distinction, four experiments were done; the major experimental result, cardiac hypertrophy, was assessed in terms of ventricular mass and cardiocyte crosssectional area. In the first experiment, the cat right ventricle was loaded differentially by pressure overloading the ventricle, while unloading a constituent papillary muscle; this model was used to ask whether any endogenous or exogenous substance caused uniform hypertrophy, or whether locally appropriate load responses caused ventricular hypertrophy with papillary muscle atrophy. The latter result obtained, both when each aspect of differential loading was simultaneous and when a previously hypertrophied papillary muscle was unloaded in a pressure overloaded right ventricle. In the second experiment, epicardial denervation and then pressure overloading was used to assess the role of local neurogenic catecholamines in the genesis of hypertrophy. The degree of hypertrophy caused by these procedures was the same as that caused by pressure overloading alone. In the third and fourth experiments, P-adrenoceptor or a-adrenceptor blockade was produced before and maintained during pressure overloading. The hypertrophic response did not differ in either case from that caused by pressure overloading without adrenoceptor blockade. These experiments demonstrate the following: first, cardiac hypertrophy is a local response to increased load, so that any factor serving as a mediator of this response must be either locally generated or selectively active only in those cardiocytes in which stress and or strain are increased; second, catecholamines are not that mediator, in that adrenergic activation is neither necessary for nor importantly modifies the cardiac hypertrophic response to an increased hemodynamic load and prochlorperazine.
Clozapine leaflet
Infections can increase cloapine levels, resulting in delirium: an update. Introduction In 1999 the Netherlands Pharmacovigilance Centre Lareb informed the Medicines Evaluation Board on 4 cases of increased clozapine levels and delirium during an episode of infection [1]. At that time there were no similar cases published in the medical literature. Another case was received since by Lareb from the same reporter and all five cases were published in the Dutch Medical Journal Ned Tijdschr Geneesk ; in 2001 [2]. In 2002 a case report on this issue was reported by Raaska et al. [3] and in 2003 a similar case report was published by De Leon and Diaz [4]. No additations concerning this ADR were made to the SPCs of clozapine. Reports In table 1 all published cases are summarized. Cases A to E were reported to the Netherlands Pharmacovigilance Centre Lareb. Cases F and G were recently published in the medical literature [3, 4].
Figure 36. Clozapjne vs chlorpromazine: BPRS score in treatment-resistant patients. Reproduced from Kane J et al. The Clozapune Collaborative Group. Clozapkne for the treatmentresistant schizophrenic: a double-blind comparison with chlorpromazine. Arch Gen Psychiat 1988; 45: 789796.244 and coreg.
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Were able to follow one patient as she was being established on an antipsychotic drug. This patient exhibited a lowering of mean lobe number over the course of treatment; from an initial mean lobe number of 2.55 falling to a low of 2.34 as medication proceeded; see case example. We tentatively conclude therefore that lowering of mean lobe number seen in patients is an effect of medication. This is in keeping with patients medicated using clozapine or chlorpromazine reported earlier Delieu et al., 2001 ; . Our results would seem to parallel many investigations of induction of neutropenia and agranulocytosis by antipsychotics, with evidence having being offered for both direct toxicity Gerson and Meltzer, 1992; Mason and Fisher, 1992; Uetrecht, 1996 ; and an immune-system mediated mechanism Yunis et al., 1992 ; . The magnitude of the left shifts we observed with different drugs varied considerably. So, is there any relationship between the magnitude of these left shifts and the frequency of occurrence of neutropenia and agranulocytosis in patients treated with these drugs? This question is of considerable practical significance but is extremely awkward to assess, given the information available in the literature. Nevertheless we searched the literature for reports of these neutrophil pathologies, both for the drugs considered in the present study, and also for chlorpromazine and clozapine, whose effects on mean lobe number has been previously reported Delieu et al., 2001 ; , with outcomes as displayed in Table 2. Inspection of the table shows a marked inverse relationship between mean of the mean lobe number and the number of reports of episodes of druginduced neutrophil pathology Spearman Rank Order Correlation 0.88, p 0.001 ; . The table also shows that neither frequency of use nor dosage have any correspondingly simple relationship to the left shifts. Consequently, considering the data from eight antipsychotic.
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