There are about 28871 clinical studies being (or have been) conducted in Canada. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The purpose of this study is to find what effects, good and/or bad, treatment with two drugs has on leukemia. The first medicine is tretinoin (also called all-trans retinoic acid, ATRA, or Vesanoid). It is an approved medicine that causes the leukemia cells in APL to mature. It is related to vitamin A. The second is arsenic trioxide (Trisenox). It is an approved medicine for APL that comes back after earlier treatment. APL is most often treated with tretinoin and standard chemotherapy drugs. These chemotherapy drugs can cause infection and bleeding. They can also damage the heart and normal bone marrow cells. This can lead to a second leukemia years later. In this study, the investigators are using tretinoin and arsenic trioxide together. Both drugs work to treat APL. They have been used together in only a limited number of people. The investigators want to use these drugs together to reduce the amount of standard chemotherapy and decrease side effects. The patient will receive standard chemotherapy with a drug called idarubicin only if they have a higher chance of the leukemia coming back or a higher risk of side effects.
In this study, the investigators hope to study a number of variables the investigators believe may help us predict why some people respond better to some medications than others. Participants will be randomly assigned to receive one of two typical medications for OCD, clomipramine or escitalopram. Individuals who would like to participate but who have previously tried one or both of these medications may instead take a newer drug, duloxetine, and undergo the identical procedures. The factors the investigators will be studying include demographics (i.e. age, gender, age of onset of OCD), genetic markers (such as variants in genes involved in breaking down drugs in the liver (cytochrome P450 system), and genes involved in several brain chemical systems, such as serotonin), the dimensions of OCD symptoms (i.e. checking, washing, and hoarding) and cortical inhibition. Cortical inhibition will be measured transcranial magnetic stimulation and is being studied because deficits in this process may be important in the development of OCD. The investigators hypothesize that certain pretreatment clinical characteristics will correlate with poor treatment response including earlier age of onset, longer duration of illness, increased YBOCS severity and presence of significant hoarding symptoms. The investigators expect that increasing degree of deficit in CI pre-treatment will predict poor treatment response, but that increase in CI from pre- to post-treatment will correlate with a positive treatment response. Differences in genetic marker status for cytochrome P450 genes will correlate with tolerability and/or response, as well as differences in genetic marker status in SLC1A1, GRIN2B, 5HT1B and 5HT2A will correlate with response.
Standard anesthetic management of liver transplantation patients includes a general anesthetic using multiple drugs, including the neuromuscular relaxant rocuronium. Pharmacokinetic modelling of this agent has been poorly described during liver transplantation, which impacts on appropriate dosing of this agent within this population where plasma concentrations can vary with fluid shifts and hepatic drug metabolism during the various phases of liver transplantation. Plasma drug and drug metabolite concentrations will be measured using the technique of solid phase micro-extraction (SPME). Measuring and correlating the levels of rocuronium and other liver metabolites with the degree of post transplantation hepatic dysfunction may serve as a simple and cost-effective marker to aid diagnosis, identify those at risk of hepatic dysfunction and potentially grade the severity
Patients undergoing chest surgery often require insertion of a breathing tube (double lumen tube) after they are unconscious. The double lumen tube enables the anaesthetist to ventilate (assist breathing) one lung at a time. The other lung is partially deflated to enable enough space for the surgeon to perform the procedure. The breathing tube is inserted with a laryngoscope (blade with a light at the end) so the vocal cords can be seen. This is standard medical practise. Two laryngoscopes are commonly used at Toronto General Hospital to insert the tube. The Macintosh laryngoscope has been is use for over 50 years and the Glidescope for over 10 years. Both devices have been extensively researched for single lumen tubes insertion and found to be very safe and effective. Research is limited to say which of the two laryngoscope is the most effective for double lumen tubes.
This pilot study examined the effect of providing a 4 weeks of cost free quit smoking medications to smokers identified in a stroke prevention clinic who were interested in quitting smoking compared to providing a prescription for the medication only.
What is the difference in subscapularis strength between two different methods of subscapularis mobilization: incision of the tendon (tenotomy) versus peel. It is the investigators' hypothesis that a peel of the subscapularis will result in greater strength, a higher healing rate, and a greater improvement in shoulder function and quality of life following shoulder replacement.
Temsirolimus is a drug that is being studied to possibly treat kidney cancer. It works by starving the cancer of nutrients, by cutting off the blood supply, which is hoping to shrink the cancer. This study will look at the experimental use of temsirolimus, 12 weeks prior to the surgical removal of the entire kidney or a portion of the kidney that is involved by the tumor.
The purpose of this trial is to conduct an assessment of brain nociceptin/orphanin FQ peptide (NOP) receptor occupancy (RO) in healthy subjects.
Stem cells can be transplanted from a healthy donor to a patient to combat blood cancers and other disorders. This process is called stem cell transplantation. Stem cells normally live in the bone marrow. A bone marrow transplantation (BMT) is when the bone marrow is directly transplanted into a patient. However, stem cells can also be stimulated to move from the bone marrow to the blood where they can be collected, a process is called mobilization. When these stem cells are transplanted it is called peripheral blood stem cell transplantation (PBSCT). Both stem cell sources are used for different reasons, but PBSCT is much more common. There is considerable debate as to which stem cell source, BMT or PBSCT, is optimal. There are differences between the two sources in important transplant outcomes. The stem cell product that is transplanted, also called the stem cell graft, contains more than just stem cells. Results from studies suggest that the variation in the cells with grafts may account for the variation in outcomes. Preliminary data from a recent study conducted by the Canadian Blood and Bone Marrow Transplant Group has associated relative frequencies of particular cell populations with leukemic relapse and another important outcome called graft versus host disease (GVHD). While the later essentially equates to a failed transplant, the former is the most common and devastating complication of stem cell transplantation. The only drug used to mobilize stem cells into the blood of health donors for collection is G-CSF. However there is a new mobilization drug recently approved called plerixafor. This drug is able to mobilize stem cells when G-CSF has failed and pre-clinical studies suggest that it may produce a superior stem cell graft to G-CSF alone. There is little information available, besides safety and efficacy data, about the effects that plerixafor has on the stem cell graft of normal healthy donors. This study will compare the stem cell graft in normal healthy donors following plerixafor mobilization versus plerixafor and G-CSF mobilization. Specifically, they will look at the cell populations that have been previously correlated with important transplantation outcomes like relapse and GVHD. The investigators suspect that the stem cell graft mobilized by plerixafor and G-CSF will provide a superior graft to that mobilized by plerixafor alone.
Long-term studies have emphasized that depressive symptoms and episodes account for majority of the illness burden experienced by individuals with bipolar disorder (BD). Previous studies have shown that blood levels of proteins called pro-inflammatory cytokines are abnormal in individuals with bipolar depression. The investigators hypothesize that preventing the production or release of pro-inflammatory cytokines will result in improvement of depressive symptoms in individuals with bipolar depression. Minocycline is a medication that inhibits the activation of immune cells (i.e. microglia) in the brain and reduces the production of pro-inflammatory cytokines. Treatment with minocycline has been shown to have antidepressant-like effects in animal studies and improve symptoms of individuals with schizophrenia. In this study, minocycline (100 mg twice a day) will be administered for 8 weeks to determine if it is an efficacious antidepressant for individuals with bipolar depression.