Serum enzyme activities in athletes in association with cardiorespiratory fitness parameters. - Paper published in Benha Medical journal. Sept. (2000), 17(3). Assessment of joint damage from analysis of released bone sialoprotein into synovial fluid of rheumatoid arthritis patients. - Paper published in Benha Medical journal. Jan. (2001), 18(1). Assessment of fatigue in rheumatoid arthritis. - Paper published in Benha Medical journal. Sept. (2001), 18(3) Cardiac disease in systemic lupus erythematosus and its relation to antiphospholipid antibodies. - Paper published in Benha Medical journal. Sept. (2002), 19(3). Study of vascular endothelial growth factor and fibroblast growth factor-2 in rheumatoid arthritis and osteoarthritis patients. - Single author paper published in the journal of the Egyptian Rheumatologist. Jan. (2003), 25(1). Behcet’s disease: HLA B51 subtypes distribution in Egyptian patients. - Single author paper published in the Pan arab journal of Dermatology. February (2003), 14(1). Pulmonary involvement in systemic connective tissue diseases and assessment of their effect on pulmonary functions. - Paper published in the journal of the Egyptian Rheumatologist. May (2003), 25(2) Serum and synovial fluid osteocalcin in rheumatoid arthritis and osteoarthritis. Insight into the relation between markers of bone, cartilage and synovial tissue turnover. - Single author paper published in the journal of the Egyptian Rheumatologist. May (2003), 25(2) Prevalence and clinical significance of antikeratin antibodies in patients with rheumatoid arthritis. - Paper published in the journal of the Egyptian Rheumatologist. Sept. (2003), 25(3). Relationship between serum levels of cartilage oligomeric matrix protein (COMP) and radiographic progression of knee osteoarthritis. - Single author paper published in the journal of the Egyptian Rheumatologist. Sept. (2003), 25(3). Serum and synovial fluid TGF-β1 in ankylosing spondylitis patients. Paper published in the journal of the Egyptian Rheumatology & Rehabilitation. December (2004), 31(5). Prevalence and clinical significance of anti-cyclic citrullinated peptide antibodies in rheumatoid arthritis. Paper published in the journal of the Egyptian Rheumatologist. Jan. (2005), 26(1). Study of physiological and health related quality of life changes following exercise training in female patients with successful percutaneous coronary intervention for acute myocardial infarction. Paper published in the journal of the Egyptian Rheumatologist. Jan. (2006), 28(1). Matrix metalloproteinases 3, 9 and tissue inhibitor metalloproteinase 1 in paired serum and synovial fluid samples of patients with early rheumatoid arthritis. Paper published in the journal of the Egyptian Rheumatologist. May. (2006), 28(2). Markers of type II collagen synthesis and degradation as a predictor of radiographic progression in knee osteoarthritis. Single author paper published in Benha Medical journal. Sept. (2007), 24(3). A study of serum and synovial fluid concentrations of soluble granzyme B in patients with early rheumatoid arthritis. Paper published in the journal of the Egyptian Rheumatology & Rehabilitation. October (2007), 34(4). Clinical associations of autoantibodies against monomeric C-reactive protein in systemic lupus erythematosus. Single author paper published in Benha Medical journal. May. (2008), 25(2). Circulating levels of endothelin 1 in patients with systemic sclerosis: relationship to specific organ involvement. Single author paper published in Benha Medical journal. Sept. (2008), 25(3). Anti-nucleosome antibodies in patients with systemic lupus erythematosus as a diagnostic tool and useful marker for lupus nephropathy. Single author paper published in the journal of the Egyptian Rheumatology & Rehabilitation. October (2008), 35(4).