1.Risk Factors for “Adjacent-Level Ossification Development” Other Than Short Plate-to-Disc Distance and Clinical Implications for Adjacent-Segment Pathology
Sang Hun LEE ; Micheal RAAD ; David B. COHEN ; Khaled M. KEBAISH ; Lee H. RILEY III
Neurospine 2025;22(1):194-201
Purpose:
To identify factors associated with adjacent-level ossification development (ALOD) after anterior cervical discectomy and fusion (ACDF) and associated clinical outcomes.
Methods:
We retrospectively reviewed records of 140 adults who underwent primary ACDF for degenerative disc disease. We compared patients with and without ALOD after ACDF. Radiographic measurements and factors associated with ALOD were assessed preoperatively and at minimum 24-month follow-up. Clinical outcomes were incidence of clinical adjacent-segment pathologies (CASP), revision surgery, and patient-reported outcomes.
Results:
Factors associated with both cranial and caudal ALOD were short plate-to-disc distance (PDD), adjacent-segment kyphosis, hyperlordotic ACDF causing junctional segment kyphosis, and preoperative ossification of the anterior longitudinal ligament (OALL). Mean final adjacent-segment range of motion (ROM) was less in those with cranial ALOD (6.9° ± 2.8°) than in those without cranial ALOD (12° ± 4.2°) (p < 0.01). Mean final adjacent-segment ROM was also less in those with caudal ALOD (5.5° ± 2.4º) than in those without caudal ALOD (8.2º ± 3.7º) (p < 0.01). The incidence of CASP-required surgery was higher in those with caudal ALOD (p = 0.02) but no different in those with cranial ALOD (p = 0.69) compared with those without ALOD.
Conclusion
Factors associated with ALOD were a kyphotic segment adjacent to ACDF, hyperlordotic fusion, preoperative OALL, and short PDD. ALOD was associated with less segmental ROM and, for those with caudal but not cranial ALOD, higher incidence of revision surgery for CASP.
2.Prevalence of asymptomatic malaria in high- and low-transmission areas of Tanzania: The role of asymptomatic carriers in malaria persistence and the need for targeted surveillance and control efforts
Ernest MAZIGO ; Hojong JUN ; Wang-Jong LEE ; Johnsy Mary LOUIS ; Fadhila FITRIANA ; Jadidan Hada SYAHADA ; Fauzi MUH ; Feng LU ; Md Atique AHMED ; Seok Ho CHA ; Wanjoo CHUN ; Won Sun PARK ; Se Jin LEE ; Sunghun NA ; Joon-Hee HAN ; Nyalali KIJA ; Smart GEODFREY ; Eun-Teak HAN ; Jim TODD ; Alphaxard MANJURANO ; Winifrida KIDIMA ; Jin-Hee HAN
Parasites, Hosts and Diseases 2025;63(1):57-65
As many countries implement different programs aimed at eliminating malaria, attention should be given to asymptomatic carriers that may interrupt the progress. This was a community-based cross-sectional study conducted in Tanzania from December 2022 to July 2023 within 4 villages from each of the 3 regions, Geita and Kigoma, which are high malaria transmission, and Arusha, which is low transmission. Malaria was diagnosed in asymptomatic individuals aged 1 year and older using the malaria rapid diagnostic test and light microscope. A total of 2,365 of 3,489 (67.9%) participants were enrolled from high-transmission villages. The overall prevalence was 25.5% and 15.8% by malaria rapid diagnostic test and light microscope, respectively. Using the respective tools, the prevalence was significantly higher at 35.6% (confidence interval (CI)=23.6–49.9) and 23.1% (CI=16.2–35.1) in the high-transmission regions (Geita and Kigoma) compared with 2.9% (CI=1.1–3.5) and 1.1% (CI=0.7–1.8) in the low-transmission region (Arusha). Children younger than 15 years and males accounted for the greatest proportion of infections. In the study area, the prevalence of asymptomatic cases was higher than that of reported symptomatic cases in health facilities. We hypothesize that these parasite reservoirs may contribute to the persistence of malaria in the country. Therefore, to achieve comprehensive malaria control in the country, the surveillance and screening of asymptomatic malaria cases are vital.
3.Stem Cell-Based Approaches in Parkinson’s Disease Research
Min Seong KIM ; Subeen YOON ; Jiwoo CHOI ; Yong Jun KIM ; Gabsang LEE
International Journal of Stem Cells 2025;18(1):21-36
Parkinson’s disease (PD) is a neurodegenerative condition characterized by the loss of midbrain dopaminergic neurons, leading to motor symptoms. While current treatments provide limited relief, they don’t alter disease progression. Stem cell technology, involving patient-specific stem cell-derived neurons, offers a promising avenue for research and personalized regenerative therapies. This article reviews the potential of stem cell-based research in PD, summarizing ongoing efforts, their limitations, and introducing innovative research models. The integration of stem cell technology and advanced models promises to enhance our understanding and treatment strategies for PD.
4.Hederacoside C Modulates EGF-Induced MUC5AC Mucin Gene Expression by Regulating the MAPK Signaling Pathway in Human Airway Epithelial Cells
Rajib HOSSAIN ; Md. Solayman HOSSAIN ; Hyun Jae LEE ; Choong Jae LEE
Biomolecules & Therapeutics 2025;33(3):510-517
This study aimed to evaluate the potential of hederacoside C, an active compound isolated from Hedera helix, which has been used for managing inflammatory respiratory diseases, in attenuating epidermal growth factor (EGF)-induced airway MUC5AC mucin gene expression. Human pulmonary mucoepidermoid NCI-H292 cells were pretreated with hederacoside C for 30 min and subsequently stimulated with EGF for 24 h. The study also examined the effect of hederacoside C on the EGF-induced mitogenactivated protein kinase (MAPK) signaling pathway. The results showed that hederacoside C inhibited MUC5AC mucin mRNA expression and the production of mucous glycoproteins by suppressing the phosphorylation of the EGF receptor (EGFR), as well as the phosphorylation of MAPK/extracellular signal-regulated kinase (ERK) 1/2 (MEK1/2), p38 MAPK, ERK 1/2 (p44/42), and the nuclear expression of specificity protein-1 (Sp1). These findings suggest that hederacoside C has the potential to reduce EGFinduced mucin gene expression by inhibiting the EGFR-MAPK-Sp1 signaling pathway in NCI-H292 cells.
5.Risk Factors for “Adjacent-Level Ossification Development” Other Than Short Plate-to-Disc Distance and Clinical Implications for Adjacent-Segment Pathology
Sang Hun LEE ; Micheal RAAD ; David B. COHEN ; Khaled M. KEBAISH ; Lee H. RILEY III
Neurospine 2025;22(1):194-201
Purpose:
To identify factors associated with adjacent-level ossification development (ALOD) after anterior cervical discectomy and fusion (ACDF) and associated clinical outcomes.
Methods:
We retrospectively reviewed records of 140 adults who underwent primary ACDF for degenerative disc disease. We compared patients with and without ALOD after ACDF. Radiographic measurements and factors associated with ALOD were assessed preoperatively and at minimum 24-month follow-up. Clinical outcomes were incidence of clinical adjacent-segment pathologies (CASP), revision surgery, and patient-reported outcomes.
Results:
Factors associated with both cranial and caudal ALOD were short plate-to-disc distance (PDD), adjacent-segment kyphosis, hyperlordotic ACDF causing junctional segment kyphosis, and preoperative ossification of the anterior longitudinal ligament (OALL). Mean final adjacent-segment range of motion (ROM) was less in those with cranial ALOD (6.9° ± 2.8°) than in those without cranial ALOD (12° ± 4.2°) (p < 0.01). Mean final adjacent-segment ROM was also less in those with caudal ALOD (5.5° ± 2.4º) than in those without caudal ALOD (8.2º ± 3.7º) (p < 0.01). The incidence of CASP-required surgery was higher in those with caudal ALOD (p = 0.02) but no different in those with cranial ALOD (p = 0.69) compared with those without ALOD.
Conclusion
Factors associated with ALOD were a kyphotic segment adjacent to ACDF, hyperlordotic fusion, preoperative OALL, and short PDD. ALOD was associated with less segmental ROM and, for those with caudal but not cranial ALOD, higher incidence of revision surgery for CASP.
6.Prevalence of asymptomatic malaria in high- and low-transmission areas of Tanzania: The role of asymptomatic carriers in malaria persistence and the need for targeted surveillance and control efforts
Ernest MAZIGO ; Hojong JUN ; Wang-Jong LEE ; Johnsy Mary LOUIS ; Fadhila FITRIANA ; Jadidan Hada SYAHADA ; Fauzi MUH ; Feng LU ; Md Atique AHMED ; Seok Ho CHA ; Wanjoo CHUN ; Won Sun PARK ; Se Jin LEE ; Sunghun NA ; Joon-Hee HAN ; Nyalali KIJA ; Smart GEODFREY ; Eun-Teak HAN ; Jim TODD ; Alphaxard MANJURANO ; Winifrida KIDIMA ; Jin-Hee HAN
Parasites, Hosts and Diseases 2025;63(1):57-65
As many countries implement different programs aimed at eliminating malaria, attention should be given to asymptomatic carriers that may interrupt the progress. This was a community-based cross-sectional study conducted in Tanzania from December 2022 to July 2023 within 4 villages from each of the 3 regions, Geita and Kigoma, which are high malaria transmission, and Arusha, which is low transmission. Malaria was diagnosed in asymptomatic individuals aged 1 year and older using the malaria rapid diagnostic test and light microscope. A total of 2,365 of 3,489 (67.9%) participants were enrolled from high-transmission villages. The overall prevalence was 25.5% and 15.8% by malaria rapid diagnostic test and light microscope, respectively. Using the respective tools, the prevalence was significantly higher at 35.6% (confidence interval (CI)=23.6–49.9) and 23.1% (CI=16.2–35.1) in the high-transmission regions (Geita and Kigoma) compared with 2.9% (CI=1.1–3.5) and 1.1% (CI=0.7–1.8) in the low-transmission region (Arusha). Children younger than 15 years and males accounted for the greatest proportion of infections. In the study area, the prevalence of asymptomatic cases was higher than that of reported symptomatic cases in health facilities. We hypothesize that these parasite reservoirs may contribute to the persistence of malaria in the country. Therefore, to achieve comprehensive malaria control in the country, the surveillance and screening of asymptomatic malaria cases are vital.
7.Risk Factors for “Adjacent-Level Ossification Development” Other Than Short Plate-to-Disc Distance and Clinical Implications for Adjacent-Segment Pathology
Sang Hun LEE ; Micheal RAAD ; David B. COHEN ; Khaled M. KEBAISH ; Lee H. RILEY III
Neurospine 2025;22(1):194-201
Purpose:
To identify factors associated with adjacent-level ossification development (ALOD) after anterior cervical discectomy and fusion (ACDF) and associated clinical outcomes.
Methods:
We retrospectively reviewed records of 140 adults who underwent primary ACDF for degenerative disc disease. We compared patients with and without ALOD after ACDF. Radiographic measurements and factors associated with ALOD were assessed preoperatively and at minimum 24-month follow-up. Clinical outcomes were incidence of clinical adjacent-segment pathologies (CASP), revision surgery, and patient-reported outcomes.
Results:
Factors associated with both cranial and caudal ALOD were short plate-to-disc distance (PDD), adjacent-segment kyphosis, hyperlordotic ACDF causing junctional segment kyphosis, and preoperative ossification of the anterior longitudinal ligament (OALL). Mean final adjacent-segment range of motion (ROM) was less in those with cranial ALOD (6.9° ± 2.8°) than in those without cranial ALOD (12° ± 4.2°) (p < 0.01). Mean final adjacent-segment ROM was also less in those with caudal ALOD (5.5° ± 2.4º) than in those without caudal ALOD (8.2º ± 3.7º) (p < 0.01). The incidence of CASP-required surgery was higher in those with caudal ALOD (p = 0.02) but no different in those with cranial ALOD (p = 0.69) compared with those without ALOD.
Conclusion
Factors associated with ALOD were a kyphotic segment adjacent to ACDF, hyperlordotic fusion, preoperative OALL, and short PDD. ALOD was associated with less segmental ROM and, for those with caudal but not cranial ALOD, higher incidence of revision surgery for CASP.
8.Prevalence of asymptomatic malaria in high- and low-transmission areas of Tanzania: The role of asymptomatic carriers in malaria persistence and the need for targeted surveillance and control efforts
Ernest MAZIGO ; Hojong JUN ; Wang-Jong LEE ; Johnsy Mary LOUIS ; Fadhila FITRIANA ; Jadidan Hada SYAHADA ; Fauzi MUH ; Feng LU ; Md Atique AHMED ; Seok Ho CHA ; Wanjoo CHUN ; Won Sun PARK ; Se Jin LEE ; Sunghun NA ; Joon-Hee HAN ; Nyalali KIJA ; Smart GEODFREY ; Eun-Teak HAN ; Jim TODD ; Alphaxard MANJURANO ; Winifrida KIDIMA ; Jin-Hee HAN
Parasites, Hosts and Diseases 2025;63(1):57-65
As many countries implement different programs aimed at eliminating malaria, attention should be given to asymptomatic carriers that may interrupt the progress. This was a community-based cross-sectional study conducted in Tanzania from December 2022 to July 2023 within 4 villages from each of the 3 regions, Geita and Kigoma, which are high malaria transmission, and Arusha, which is low transmission. Malaria was diagnosed in asymptomatic individuals aged 1 year and older using the malaria rapid diagnostic test and light microscope. A total of 2,365 of 3,489 (67.9%) participants were enrolled from high-transmission villages. The overall prevalence was 25.5% and 15.8% by malaria rapid diagnostic test and light microscope, respectively. Using the respective tools, the prevalence was significantly higher at 35.6% (confidence interval (CI)=23.6–49.9) and 23.1% (CI=16.2–35.1) in the high-transmission regions (Geita and Kigoma) compared with 2.9% (CI=1.1–3.5) and 1.1% (CI=0.7–1.8) in the low-transmission region (Arusha). Children younger than 15 years and males accounted for the greatest proportion of infections. In the study area, the prevalence of asymptomatic cases was higher than that of reported symptomatic cases in health facilities. We hypothesize that these parasite reservoirs may contribute to the persistence of malaria in the country. Therefore, to achieve comprehensive malaria control in the country, the surveillance and screening of asymptomatic malaria cases are vital.
9.Hederacoside C Modulates EGF-Induced MUC5AC Mucin Gene Expression by Regulating the MAPK Signaling Pathway in Human Airway Epithelial Cells
Rajib HOSSAIN ; Md. Solayman HOSSAIN ; Hyun Jae LEE ; Choong Jae LEE
Biomolecules & Therapeutics 2025;33(3):510-517
This study aimed to evaluate the potential of hederacoside C, an active compound isolated from Hedera helix, which has been used for managing inflammatory respiratory diseases, in attenuating epidermal growth factor (EGF)-induced airway MUC5AC mucin gene expression. Human pulmonary mucoepidermoid NCI-H292 cells were pretreated with hederacoside C for 30 min and subsequently stimulated with EGF for 24 h. The study also examined the effect of hederacoside C on the EGF-induced mitogenactivated protein kinase (MAPK) signaling pathway. The results showed that hederacoside C inhibited MUC5AC mucin mRNA expression and the production of mucous glycoproteins by suppressing the phosphorylation of the EGF receptor (EGFR), as well as the phosphorylation of MAPK/extracellular signal-regulated kinase (ERK) 1/2 (MEK1/2), p38 MAPK, ERK 1/2 (p44/42), and the nuclear expression of specificity protein-1 (Sp1). These findings suggest that hederacoside C has the potential to reduce EGFinduced mucin gene expression by inhibiting the EGFR-MAPK-Sp1 signaling pathway in NCI-H292 cells.
10.Stem Cell-Based Approaches in Parkinson’s Disease Research
Min Seong KIM ; Subeen YOON ; Jiwoo CHOI ; Yong Jun KIM ; Gabsang LEE
International Journal of Stem Cells 2025;18(1):21-36
Parkinson’s disease (PD) is a neurodegenerative condition characterized by the loss of midbrain dopaminergic neurons, leading to motor symptoms. While current treatments provide limited relief, they don’t alter disease progression. Stem cell technology, involving patient-specific stem cell-derived neurons, offers a promising avenue for research and personalized regenerative therapies. This article reviews the potential of stem cell-based research in PD, summarizing ongoing efforts, their limitations, and introducing innovative research models. The integration of stem cell technology and advanced models promises to enhance our understanding and treatment strategies for PD.

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