1.The Effects of Nicotine on Re-endothelialization, Inflammation, and Neoatherosclerosis After Drug-Eluting Stent Implantation in a Porcine Model
Seok OH ; Ju Han KIM ; Saleem AHMAD ; Yu Jeong JIN ; Mi Hyang NA ; Munki KIM ; Jeong Ha KIM ; Dae Sung PARK ; Dae Young HYUN ; Kyung Hoon CHO ; Min Chul KIM ; Doo Sun SIM ; Young Joon HONG ; Seung-won LEE ; Youngkeun AHN ; Myung Ho JEONG
Korean Circulation Journal 2025;55(1):50-64
Background and Objectives:
Cigarette smoking is a major risk factor for atherosclerosis.Nicotine, a crucial constituent of tobacco, contributes to atherosclerosis development and progression. However, evidence of the association between nicotine and neointima formation is limited. We aimed to evaluate whether nicotine enhances neointimal hyperplasia in the native epicardial coronary arteries of pigs after percutaneous coronary intervention (PCI) with drug-eluting stents (DES).
Methods:
After coronary angiography (CAG) and quantitative coronary angiography (QCA), we implanted 20 DES into 20 pigs allocated to 2 groups: no-nicotine (n=10) and nicotine (n=10) groups. Post-PCI CAG and QCA were performed immediately. Follow-up CAG, QCA, optical coherence tomography (OCT), and histopathological analyses were performed 2 months post-PCI.
Results:
Despite intergroup similarities in the baseline QCA findings, OCT analysis showed that the nicotine group had a smaller mean stent and lumen areas, a larger mean neointimal area, greater percent area stenosis, and higher peri-strut fibrin and inflammation scores than the no-nicotine group. In immunofluorescence analysis, the nicotine group displayed higher expression of CD68 and α-smooth muscle actin but lower CD31 expression than the no-nicotine group.
Conclusions
Nicotine inhibited re-endothelialization and promoted inflammation and NIH after PCI with DES in a porcine model.
2.Distal Biceps Brachii Rupture
Ahmad ALMIGDAD ; Saharish SALEEM ; Amar MALHAS
Clinics in Orthopedic Surgery 2025;17(2):267-273
Background:
Distal biceps tendon ruptures are rare injuries that predominantly affect active men between the fourth and sixth decades, with a higher incidence in weightlifters and bodybuilders. This study aimed to comprehensively review cases involving distal biceps tendon ruptures, focusing on sociodemographic factors (such as sex, age, occupation, and smoking status), injury mechanisms, postoperative outcomes, and recorded complications.
Methods:
This retrospective review examines distal biceps injuries at Royal Berkshire Foundation Trust NHS Hospital from 2017 to 2023. Analyzed data encompasses demographic information, injury mechanisms, clinical findings, and complications. Outcomes were assessed using the range of movement and Elbow Oxford Score.
Results:
The average age of 73 patients (72 men and 1 woman) was 45.6 ± 9.4 years, with 75.3% falling between 36 and 55 years.Manual workers represented 46.6%, and 9.6% reported comorbidities and 6.8% steroid use. Lifting heavy objects and sports injuries were the predominant causes, constituting 43.8% and 13.7%, respectively. Most injuries (91.8%) involved complete tears, and most underwent acute surgery within the initial 4 weeks (84.9%). The most common complications were heterotopic ossification (23.3%) and neurological injury (16.4%). Ongoing weakness and fatigue were reported by 6.8%. At final follow-up, 75.7% of patients demonstrated a range of movement comparable to the contralateral side. However, 13.7% had a limited pronationsupination arch with a mean loss of 20° ± 14°, 11% had an extension lag with a mean of 15° ± 7°, and 2.7% showed a 10° flexion loss compared to the contralateral side.
Conclusions
Distal biceps injuries are rare but lead to substantial functional loss without operative treatment. Surgical repair yields positive functional outcomes. Our study aligns with existing literature, emphasizing a predominance of middle-aged men and manual workers. It underscores the impact of corticosteroids and smoking, highlights surgical efficacy, and advocates for increased research in distal biceps injury prevention and treatment understanding.
3.The Effects of Nicotine on Re-endothelialization, Inflammation, and Neoatherosclerosis After Drug-Eluting Stent Implantation in a Porcine Model
Seok OH ; Ju Han KIM ; Saleem AHMAD ; Yu Jeong JIN ; Mi Hyang NA ; Munki KIM ; Jeong Ha KIM ; Dae Sung PARK ; Dae Young HYUN ; Kyung Hoon CHO ; Min Chul KIM ; Doo Sun SIM ; Young Joon HONG ; Seung-won LEE ; Youngkeun AHN ; Myung Ho JEONG
Korean Circulation Journal 2025;55(1):50-64
Background and Objectives:
Cigarette smoking is a major risk factor for atherosclerosis.Nicotine, a crucial constituent of tobacco, contributes to atherosclerosis development and progression. However, evidence of the association between nicotine and neointima formation is limited. We aimed to evaluate whether nicotine enhances neointimal hyperplasia in the native epicardial coronary arteries of pigs after percutaneous coronary intervention (PCI) with drug-eluting stents (DES).
Methods:
After coronary angiography (CAG) and quantitative coronary angiography (QCA), we implanted 20 DES into 20 pigs allocated to 2 groups: no-nicotine (n=10) and nicotine (n=10) groups. Post-PCI CAG and QCA were performed immediately. Follow-up CAG, QCA, optical coherence tomography (OCT), and histopathological analyses were performed 2 months post-PCI.
Results:
Despite intergroup similarities in the baseline QCA findings, OCT analysis showed that the nicotine group had a smaller mean stent and lumen areas, a larger mean neointimal area, greater percent area stenosis, and higher peri-strut fibrin and inflammation scores than the no-nicotine group. In immunofluorescence analysis, the nicotine group displayed higher expression of CD68 and α-smooth muscle actin but lower CD31 expression than the no-nicotine group.
Conclusions
Nicotine inhibited re-endothelialization and promoted inflammation and NIH after PCI with DES in a porcine model.
4.Distal Biceps Brachii Rupture
Ahmad ALMIGDAD ; Saharish SALEEM ; Amar MALHAS
Clinics in Orthopedic Surgery 2025;17(2):267-273
Background:
Distal biceps tendon ruptures are rare injuries that predominantly affect active men between the fourth and sixth decades, with a higher incidence in weightlifters and bodybuilders. This study aimed to comprehensively review cases involving distal biceps tendon ruptures, focusing on sociodemographic factors (such as sex, age, occupation, and smoking status), injury mechanisms, postoperative outcomes, and recorded complications.
Methods:
This retrospective review examines distal biceps injuries at Royal Berkshire Foundation Trust NHS Hospital from 2017 to 2023. Analyzed data encompasses demographic information, injury mechanisms, clinical findings, and complications. Outcomes were assessed using the range of movement and Elbow Oxford Score.
Results:
The average age of 73 patients (72 men and 1 woman) was 45.6 ± 9.4 years, with 75.3% falling between 36 and 55 years.Manual workers represented 46.6%, and 9.6% reported comorbidities and 6.8% steroid use. Lifting heavy objects and sports injuries were the predominant causes, constituting 43.8% and 13.7%, respectively. Most injuries (91.8%) involved complete tears, and most underwent acute surgery within the initial 4 weeks (84.9%). The most common complications were heterotopic ossification (23.3%) and neurological injury (16.4%). Ongoing weakness and fatigue were reported by 6.8%. At final follow-up, 75.7% of patients demonstrated a range of movement comparable to the contralateral side. However, 13.7% had a limited pronationsupination arch with a mean loss of 20° ± 14°, 11% had an extension lag with a mean of 15° ± 7°, and 2.7% showed a 10° flexion loss compared to the contralateral side.
Conclusions
Distal biceps injuries are rare but lead to substantial functional loss without operative treatment. Surgical repair yields positive functional outcomes. Our study aligns with existing literature, emphasizing a predominance of middle-aged men and manual workers. It underscores the impact of corticosteroids and smoking, highlights surgical efficacy, and advocates for increased research in distal biceps injury prevention and treatment understanding.
5.Distal Biceps Brachii Rupture
Ahmad ALMIGDAD ; Saharish SALEEM ; Amar MALHAS
Clinics in Orthopedic Surgery 2025;17(2):267-273
Background:
Distal biceps tendon ruptures are rare injuries that predominantly affect active men between the fourth and sixth decades, with a higher incidence in weightlifters and bodybuilders. This study aimed to comprehensively review cases involving distal biceps tendon ruptures, focusing on sociodemographic factors (such as sex, age, occupation, and smoking status), injury mechanisms, postoperative outcomes, and recorded complications.
Methods:
This retrospective review examines distal biceps injuries at Royal Berkshire Foundation Trust NHS Hospital from 2017 to 2023. Analyzed data encompasses demographic information, injury mechanisms, clinical findings, and complications. Outcomes were assessed using the range of movement and Elbow Oxford Score.
Results:
The average age of 73 patients (72 men and 1 woman) was 45.6 ± 9.4 years, with 75.3% falling between 36 and 55 years.Manual workers represented 46.6%, and 9.6% reported comorbidities and 6.8% steroid use. Lifting heavy objects and sports injuries were the predominant causes, constituting 43.8% and 13.7%, respectively. Most injuries (91.8%) involved complete tears, and most underwent acute surgery within the initial 4 weeks (84.9%). The most common complications were heterotopic ossification (23.3%) and neurological injury (16.4%). Ongoing weakness and fatigue were reported by 6.8%. At final follow-up, 75.7% of patients demonstrated a range of movement comparable to the contralateral side. However, 13.7% had a limited pronationsupination arch with a mean loss of 20° ± 14°, 11% had an extension lag with a mean of 15° ± 7°, and 2.7% showed a 10° flexion loss compared to the contralateral side.
Conclusions
Distal biceps injuries are rare but lead to substantial functional loss without operative treatment. Surgical repair yields positive functional outcomes. Our study aligns with existing literature, emphasizing a predominance of middle-aged men and manual workers. It underscores the impact of corticosteroids and smoking, highlights surgical efficacy, and advocates for increased research in distal biceps injury prevention and treatment understanding.
6.The Effects of Nicotine on Re-endothelialization, Inflammation, and Neoatherosclerosis After Drug-Eluting Stent Implantation in a Porcine Model
Seok OH ; Ju Han KIM ; Saleem AHMAD ; Yu Jeong JIN ; Mi Hyang NA ; Munki KIM ; Jeong Ha KIM ; Dae Sung PARK ; Dae Young HYUN ; Kyung Hoon CHO ; Min Chul KIM ; Doo Sun SIM ; Young Joon HONG ; Seung-won LEE ; Youngkeun AHN ; Myung Ho JEONG
Korean Circulation Journal 2025;55(1):50-64
Background and Objectives:
Cigarette smoking is a major risk factor for atherosclerosis.Nicotine, a crucial constituent of tobacco, contributes to atherosclerosis development and progression. However, evidence of the association between nicotine and neointima formation is limited. We aimed to evaluate whether nicotine enhances neointimal hyperplasia in the native epicardial coronary arteries of pigs after percutaneous coronary intervention (PCI) with drug-eluting stents (DES).
Methods:
After coronary angiography (CAG) and quantitative coronary angiography (QCA), we implanted 20 DES into 20 pigs allocated to 2 groups: no-nicotine (n=10) and nicotine (n=10) groups. Post-PCI CAG and QCA were performed immediately. Follow-up CAG, QCA, optical coherence tomography (OCT), and histopathological analyses were performed 2 months post-PCI.
Results:
Despite intergroup similarities in the baseline QCA findings, OCT analysis showed that the nicotine group had a smaller mean stent and lumen areas, a larger mean neointimal area, greater percent area stenosis, and higher peri-strut fibrin and inflammation scores than the no-nicotine group. In immunofluorescence analysis, the nicotine group displayed higher expression of CD68 and α-smooth muscle actin but lower CD31 expression than the no-nicotine group.
Conclusions
Nicotine inhibited re-endothelialization and promoted inflammation and NIH after PCI with DES in a porcine model.
7.Distal Biceps Brachii Rupture
Ahmad ALMIGDAD ; Saharish SALEEM ; Amar MALHAS
Clinics in Orthopedic Surgery 2025;17(2):267-273
Background:
Distal biceps tendon ruptures are rare injuries that predominantly affect active men between the fourth and sixth decades, with a higher incidence in weightlifters and bodybuilders. This study aimed to comprehensively review cases involving distal biceps tendon ruptures, focusing on sociodemographic factors (such as sex, age, occupation, and smoking status), injury mechanisms, postoperative outcomes, and recorded complications.
Methods:
This retrospective review examines distal biceps injuries at Royal Berkshire Foundation Trust NHS Hospital from 2017 to 2023. Analyzed data encompasses demographic information, injury mechanisms, clinical findings, and complications. Outcomes were assessed using the range of movement and Elbow Oxford Score.
Results:
The average age of 73 patients (72 men and 1 woman) was 45.6 ± 9.4 years, with 75.3% falling between 36 and 55 years.Manual workers represented 46.6%, and 9.6% reported comorbidities and 6.8% steroid use. Lifting heavy objects and sports injuries were the predominant causes, constituting 43.8% and 13.7%, respectively. Most injuries (91.8%) involved complete tears, and most underwent acute surgery within the initial 4 weeks (84.9%). The most common complications were heterotopic ossification (23.3%) and neurological injury (16.4%). Ongoing weakness and fatigue were reported by 6.8%. At final follow-up, 75.7% of patients demonstrated a range of movement comparable to the contralateral side. However, 13.7% had a limited pronationsupination arch with a mean loss of 20° ± 14°, 11% had an extension lag with a mean of 15° ± 7°, and 2.7% showed a 10° flexion loss compared to the contralateral side.
Conclusions
Distal biceps injuries are rare but lead to substantial functional loss without operative treatment. Surgical repair yields positive functional outcomes. Our study aligns with existing literature, emphasizing a predominance of middle-aged men and manual workers. It underscores the impact of corticosteroids and smoking, highlights surgical efficacy, and advocates for increased research in distal biceps injury prevention and treatment understanding.
8.The Effects of Nicotine on Re-endothelialization, Inflammation, and Neoatherosclerosis After Drug-Eluting Stent Implantation in a Porcine Model
Seok OH ; Ju Han KIM ; Saleem AHMAD ; Yu Jeong JIN ; Mi Hyang NA ; Munki KIM ; Jeong Ha KIM ; Dae Sung PARK ; Dae Young HYUN ; Kyung Hoon CHO ; Min Chul KIM ; Doo Sun SIM ; Young Joon HONG ; Seung-won LEE ; Youngkeun AHN ; Myung Ho JEONG
Korean Circulation Journal 2025;55(1):50-64
Background and Objectives:
Cigarette smoking is a major risk factor for atherosclerosis.Nicotine, a crucial constituent of tobacco, contributes to atherosclerosis development and progression. However, evidence of the association between nicotine and neointima formation is limited. We aimed to evaluate whether nicotine enhances neointimal hyperplasia in the native epicardial coronary arteries of pigs after percutaneous coronary intervention (PCI) with drug-eluting stents (DES).
Methods:
After coronary angiography (CAG) and quantitative coronary angiography (QCA), we implanted 20 DES into 20 pigs allocated to 2 groups: no-nicotine (n=10) and nicotine (n=10) groups. Post-PCI CAG and QCA were performed immediately. Follow-up CAG, QCA, optical coherence tomography (OCT), and histopathological analyses were performed 2 months post-PCI.
Results:
Despite intergroup similarities in the baseline QCA findings, OCT analysis showed that the nicotine group had a smaller mean stent and lumen areas, a larger mean neointimal area, greater percent area stenosis, and higher peri-strut fibrin and inflammation scores than the no-nicotine group. In immunofluorescence analysis, the nicotine group displayed higher expression of CD68 and α-smooth muscle actin but lower CD31 expression than the no-nicotine group.
Conclusions
Nicotine inhibited re-endothelialization and promoted inflammation and NIH after PCI with DES in a porcine model.
9.Colorectal carcinoma and chronic inflammatory demyelinating polyneuropathy: is there a possible paraneoplastic association?
Adnan MALIK ; Faisal INAYAT ; Muhammad Hassan Naeem GORAYA ; Gul NAWAZ ; Ahmad MEHRAN ; Atif AZIZ ; Saad SALEEM
Clinical Endoscopy 2023;56(2):245-251
A plethora of paraneoplastic syndromes have been reported as remote effects of colorectal carcinoma (CRC). However, there is a dearth of data pertaining to the association of this cancer with demyelinating neuropathies. Herein, we describe the case of a young woman diagnosed with chronic inflammatory demyelinating polyneuropathy (CIDP). Treatment with intravenous immunoglobulins and prednisone did not improve her condition, and her neurological symptoms worsened. Subsequently, she was readmitted with exertional dyspnea, lightheadedness, malaise, and black stools. Colonoscopy revealed a necrotic mass in the ascending colon, which directly invaded the second part of the duodenum. Pathologic results confirmed the diagnosis of locally advanced CRC. Upon surgical resection of the cancer, her CIDP showed dramatic resolution without any additional therapy. Patients with CRC may develop CIDP as a type of paraneoplastic syndrome. Clinicians should remain cognizant of this potential association, as it is of paramount importance for the necessary holistic clinical management.
10.Impact of inland waters on highly pathogenic avian influenza outbreaks in neighboring poultry farms in South Korea
Saleem AHMAD ; Kyeyoung KOH ; Daesung YOO ; Gukhyun SUH ; Jaeil LEE ; Chang-Min LEE
Journal of Veterinary Science 2022;23(3):e36-
Background:
Since 2003, the H5 highly pathogenic avian influenza (HPAI) subtype has caused massive economic losses in the poultry industry in South Korea. The role of inland water bodies in avian influenza (AI) outbreaks has not been investigated. Identifying water bodies that facilitate risk pathways leading to the incursion of the HPAI virus (HPAIV) into poultry farms is essential for implementing specific precautionary measures to prevent viral transmission.
Objectives:
This matched case-control study (1:4) examined whether inland waters were associated with a higher risk of AI outbreaks in the neighboring poultry farms.
Methods:
Rivers, irrigation canals, lakes, and ponds were considered inland water bodies.The cases and controls were chosen based on the matching criteria. The nearest possible farms located within a radius of 3 km of the case farms were chosen as the control farms.The poultry farms were selected randomly, and two HPAI epidemics (H5N8 [2014–2016] and H5N6 [2016–2017]) were studied. Conditional logistic regression analysis was applied.
Results:
Statistical analysis revealed that inland waters near poultry farms were significant risk factors for AI outbreaks. The study speculated that freely wandering wild waterfowl and small animals contaminate areas surrounding poultry farms.
Conclusions
Pet birds and animals raised alongside poultry birds on farm premises may wander easily to nearby waters, potentially increasing the risk of AI infection in poultry farms. Mechanical transmission of the AI virus occurs when poultry farm workers or visitors come into contact with infected water bodies or their surroundings. To prevent AI outbreaks in the future, poultry farms should adopt strict precautions to avoid contact with nearby water bodies and their surroundings.

Result Analysis
Print
Save
E-mail