Cord blood. Child 1 year blood Child 5 year blood. Parental venous blood. Saliva samples. Urine samples. Stool samples. Breast milk samples. Nasal swabs.

Asthma in Children

Allergy in Children

Environmental Exposure

Genetic Predisposition

Project 500 CHILD Study

Skin prick tests to food and inhalant allergies

Malcolm Sears

Professor of Medicine

McMaster University

Allergy, Genes and Environment Network (AllerGen) NCE

Canadian Institutes of Health Research (CIHR)

St. Joseph's Healthcare Hamilton

University of Toronto

University of Manitoba

University of Alberta

University of British Columbia

Subjects will be prescribed progesterone 200 mg capsules by the study Principal Investigator. Subjects will take 200 mg of progesterone daily for four days.

Subjects will be prescribed progesterone 200 mg look-alike placebo capsules by the study Principal Investigator. Subjects will take look-alike placebo capsules daily for four days.

Nicotine Dependence

Nicotine Withdrawal

Participants will consume four pills of Progesterone over a period of four days. Participants will be asked to remain abstinent from smoking while taking Progesterone.

Progesterone

Participants will consume four pills of Placebo over a period of four days. Participants will be asked to remain abstinent from smoking while taking Placebo.

Placebo

Penn Center for Women's Behavioral Wellness

Progesterone and Brain Imaging Study

Multimodal Imaging of Progesterone/Neurosteroid Effects in Nicotine Addiction

Occipital cortex GABA and glutamate concentrations pre and post placebo administration. GABA and glutamate concentrations will be obtained using the non-invasive neuroimaging method of proton magnetic resonance spectroscopy (1H-MRS) both before and after placebo administration and smoking abstinence. In total subjects will undergo 6 1H-MRS scans.
The 6 1H-MRS scans take place over a period of approximately 1-2 months. Each paradigm (placebo/progesterone) takes approximately one week, with an approximately two-week wash in between paradigms for men and an approximately 1-month wash in between paradigms for women. The subject will undergo a smoking session on Test Day #1 and Test Day #5, MRS scans are conducted on Test Day #2 (2 scans) and Test Day #5 (1 scan).

Withdrawal symptoms will be measured using the Nicotine Withdrawal Symptoms Checklist (NWSC). Craving will be assessed using the Brief Questionnaire on Smoking Urges (BQSU) and the Tiffany Questionnaire for Smoking Urges and mood will be assessed using a variety of ratings including the Profile of Mood States (POMS), the Visual Analogue Scale (VAS) and the Positive and Negative Affect Scales (PANAS). Effects of nicotine will be assessed using the Nicotine Effects Questionnaire (NEQ). Premenstrual syndrome symptoms will be assessed daily during the screening and study phases using the Daily Record of Severity of Problems (DRSP).

Occipital cortex GABA and glutamate concentrations pre and post progesterone administration. GABA and glutamate concentrations will be obtained using the non-invasive neuroimaging method of proton magnetic resonance spectroscopy (1H-MRS) both before and after progesterone administration and smoking abstinence. In total, subjects will undergo 6 1H-MRS scans.
The 6 1H-MRS scans take place over a period of approximately 1-2 months. Each paradigm (placebo/progesterone) takes approximately one week, with an approximately two-week wash in between paradigms for men and an approximately 1 month wash in between paradigms for women. The subject will undergo a smoking session on Test Day #1 and Test Day #5, MRS scans are conducted on Test Day #2 (2 scans) and Test Day #5 (1 scan).

peanut hypersensitivity/ניקוטין

Project 500 CHILD Study

Progesterone and Brain Imaging Study

המאגר השלם ביותר של צמחי מרפא המגובה על ידי המדע