Sajjad A. Khan

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A growing body of behavioral and molecular genetics literature has indicated that the development of attention-deficit/hyperactivity disorder (ADHD) may be attributed to both genetic and environmental factors. Family, twin, and adoption studies provide compelling evidence that genes play a strong role in mediating susceptibility to ADHD. Molecular genetic(More)
Investigations into the genetic basis of attention-deficit/hyperactivity disorder (ADHD) continue to yield compelling results as candidate gene studies reveal more information about this elusive disorder. Family, twin, and adoption studies further the notion that ADHD is a highly heritable disorder with direct genetic and environmental influence. The year(More)
OBJECTIVE Treatment-resistant depression (TRD) imposes substantial cost from the perspective of employers. The objective of this study was to assess direct healthcare costs and indirect (disability and medical-related absenteeism) costs associated with TRD compared with non-treatment-resistant major depressive disorder (MDD). METHODS Employees with one or(More)
Serotonin is an endogenous neurotransmitter that regulates aggressive and impulsive behavior and may be involved in the development of attention deficit hyperactivity disorder (ADHD). 5-HT1B knockout mice display hyperactivity, increased exploratory activity and aggression, reduced anxiety, increased vulnerability to cocaine self-administration, and(More)
OBJECTIVE The objectives of this study were to: 1) examine the psychometric properties of three shortened versions of the Asthma Control Questionnaire (ACQ) and their comparative performance with the original 7-item ACQ in persistent asthma patients; and 2) explore the concordance of asthma control outcomes from the four versions of the ACQ when compared(More)
Aim: To evaluate and compare the efficacy of the treatment by intra articular hyaluronic acid injections and arthroscopic debridement of knee osteoarthritis in terms of alleviating pain and functional outcome. Study design: A randomized experimental study Place and duration of study: Department of Orthopedics, Ch. Rehmat Ali Memorial Trust Hospital,(More)
Billions of objects connect to the internet by using Internet of Things (IoT). Current trends of IoT are developing protocols, platforms make objects accessible across domains. The purpose of these studies is to combine all IoT devices on main host systems. However, the host systems have a problem about the mismatch between devices and the host. To solve(More)