1.Bone marrow stem cells incubated with ellipticine regenerate articular cartilage by attenuating inflammation and cartilage degradation in rabbit model
Mohammad Amjad HOSSAIN ; Soyeon LIM ; Kiran D. BHILARE ; Md Jahangir ALAM ; Baicheng CHEN ; Ajay VIJAYAKUMAR ; Hakyoung YOON ; Chang Won KANG ; Jong-Hoon KIM
Journal of Veterinary Science 2023;24(6):e83-
Background:
Ellipticine (Ellip.) was recently reported to have beneficial effects on the differentiation of adipose-derived stem cells into mature chondrocyte-like cells. On the other hand, no practical results have been derived from the transplantation of bone marrow stem cells (BMSCs) in a rabbit osteoarthritis (OA) model.
Objectives:
This study examined whether autologous BMSCs incubated with ellipticine (Ellip.+BMSCs) could regenerate articular cartilage in rabbit OA, a model similar to degenerative arthritis in human beings.
Methods:
A portion of rabbit articular cartilage was surgically removed, and Ellip.+BMSCs were transplanted into the lesion area. After two and four weeks of treatment, the serum levels of proinflammatory cytokines, i.e., tumor necrosis factor α (TNF-α) and prostaglandin E2 (PGE2), were analyzed, while macroscopic and micro-computed tomography (CT) evaluations were conducted to determine the intensity of cartilage degeneration.Furthermore, immuno-blotting was performed to evaluate the mitogen-activated protein kinases, PI3K/Akt, and nuclear factor-κB (NF-κB) signaling in rabbit OA models. Histological staining was used to confirm the change in the pattern of collagen and proteoglycan in the articular cartilage matrix.
Results:
The transplantation of Ellip.+BMSCs elicited a chondroprotective effect by reducing the inflammatory factors (TNF-α, PGE2) in a time-dependent manner. Macroscopic observations, micro-CT, and histological staining revealed articular cartilage regeneration with the downregulation of matrix-metallo proteinases (MMPs), preventing articular cartilage degradation. Furthermore, histological observations confirmed a significant boost in the production of chondrocytes, collagen, and proteoglycan compared to the control group. Western blotting data revealed the downregulation of the p38, PI3K-Akt, and NF-κB inflammatory pathways to attenuate inflammation.
Conclusions
The transplantation of Ellip.+BMSCs normalized the OA condition by boosting the recovery of degenerated articular cartilage and inhibiting the catabolic signaling pathway.
2.Efficacy and Safety of Valganciclovir in Congenital Cytomegalovirus Infection with Isolated Intrahepatic Cholestasis:A Randomized Controlled Trial
Salahuddin MAHMUD ; Tanzila FARHANA ; Ataul Mustufa ANIK ; Fayaza AHMED ; Mashud PARVEZ ; Madhabi BAIDYA ; Rafia RASHID ; Farhana TASNEEM ; Ahmed Rashidul HASAN ; Mohammad Jahangir ALAM ; Shafi Ahmed MUAZ
Pediatric Gastroenterology, Hepatology & Nutrition 2024;27(5):298-312
Purpose:
Cytomegalovirus (CMV) infection affects the hepatic, neurologic, hematopoietic, respiratory, gastrointestinal, and other organs, resulting in a high mortality rate and longterm sequelae. It may cause acute or chronic hepatitis, or even lead to hepatic cirrhosis.Valganciclovir (VGCV) is an effective, safe, and well-tolerated treatment for congenital CMV infection, without any serious adverse effects. This study was conducted to evaluate the clinical, biochemical, and virological profiles of infants with CMV with intrahepatic cholestasis and to determine the outcomes with or without treatment with VGCV.
Methods:
Twenty infants aged <6 months diagnosed with congenital CMV infection with evidence of intrahepatic cholestasis were included in this study. Randomization was used to divide the study participants into 2 groups. The control group (n=10) was treated with only supportive management, and the intervention group (n=10) was treated with oral VGCV at 16 mg/kg/dose 12 hours a day for 6 weeks plus supportive treatments. Physical examinations and biochemical, serological, and virological tests were performed at the time of diagnosis and at the end of 6 weeks and 6 months.
Results:
The control and intervention groups were compared in terms of clinical and laboratory parameters such as jaundice, dark urine, pale stool, hepatomegaly, total bilirubin, aminotransferases, gamma-glutamyl transferase, alkaline phosphatase, and CMV polymerase chain reaction load, which showed a significant reduction after treatment in the intervention group (p<0.05) with oral VGCV, with very few side effects, whereas the control group showed no significant changes.
Conclusion
Oral VGCV can be used to effectively treat CMV infection with intrahepatic cholestasis without notable side effects.
3.Efficacy and Safety of Valganciclovir in Congenital Cytomegalovirus Infection with Isolated Intrahepatic Cholestasis:A Randomized Controlled Trial
Salahuddin MAHMUD ; Tanzila FARHANA ; Ataul Mustufa ANIK ; Fayaza AHMED ; Mashud PARVEZ ; Madhabi BAIDYA ; Rafia RASHID ; Farhana TASNEEM ; Ahmed Rashidul HASAN ; Mohammad Jahangir ALAM ; Shafi Ahmed MUAZ
Pediatric Gastroenterology, Hepatology & Nutrition 2024;27(5):298-312
Purpose:
Cytomegalovirus (CMV) infection affects the hepatic, neurologic, hematopoietic, respiratory, gastrointestinal, and other organs, resulting in a high mortality rate and longterm sequelae. It may cause acute or chronic hepatitis, or even lead to hepatic cirrhosis.Valganciclovir (VGCV) is an effective, safe, and well-tolerated treatment for congenital CMV infection, without any serious adverse effects. This study was conducted to evaluate the clinical, biochemical, and virological profiles of infants with CMV with intrahepatic cholestasis and to determine the outcomes with or without treatment with VGCV.
Methods:
Twenty infants aged <6 months diagnosed with congenital CMV infection with evidence of intrahepatic cholestasis were included in this study. Randomization was used to divide the study participants into 2 groups. The control group (n=10) was treated with only supportive management, and the intervention group (n=10) was treated with oral VGCV at 16 mg/kg/dose 12 hours a day for 6 weeks plus supportive treatments. Physical examinations and biochemical, serological, and virological tests were performed at the time of diagnosis and at the end of 6 weeks and 6 months.
Results:
The control and intervention groups were compared in terms of clinical and laboratory parameters such as jaundice, dark urine, pale stool, hepatomegaly, total bilirubin, aminotransferases, gamma-glutamyl transferase, alkaline phosphatase, and CMV polymerase chain reaction load, which showed a significant reduction after treatment in the intervention group (p<0.05) with oral VGCV, with very few side effects, whereas the control group showed no significant changes.
Conclusion
Oral VGCV can be used to effectively treat CMV infection with intrahepatic cholestasis without notable side effects.
4.Efficacy and Safety of Valganciclovir in Congenital Cytomegalovirus Infection with Isolated Intrahepatic Cholestasis:A Randomized Controlled Trial
Salahuddin MAHMUD ; Tanzila FARHANA ; Ataul Mustufa ANIK ; Fayaza AHMED ; Mashud PARVEZ ; Madhabi BAIDYA ; Rafia RASHID ; Farhana TASNEEM ; Ahmed Rashidul HASAN ; Mohammad Jahangir ALAM ; Shafi Ahmed MUAZ
Pediatric Gastroenterology, Hepatology & Nutrition 2024;27(5):298-312
Purpose:
Cytomegalovirus (CMV) infection affects the hepatic, neurologic, hematopoietic, respiratory, gastrointestinal, and other organs, resulting in a high mortality rate and longterm sequelae. It may cause acute or chronic hepatitis, or even lead to hepatic cirrhosis.Valganciclovir (VGCV) is an effective, safe, and well-tolerated treatment for congenital CMV infection, without any serious adverse effects. This study was conducted to evaluate the clinical, biochemical, and virological profiles of infants with CMV with intrahepatic cholestasis and to determine the outcomes with or without treatment with VGCV.
Methods:
Twenty infants aged <6 months diagnosed with congenital CMV infection with evidence of intrahepatic cholestasis were included in this study. Randomization was used to divide the study participants into 2 groups. The control group (n=10) was treated with only supportive management, and the intervention group (n=10) was treated with oral VGCV at 16 mg/kg/dose 12 hours a day for 6 weeks plus supportive treatments. Physical examinations and biochemical, serological, and virological tests were performed at the time of diagnosis and at the end of 6 weeks and 6 months.
Results:
The control and intervention groups were compared in terms of clinical and laboratory parameters such as jaundice, dark urine, pale stool, hepatomegaly, total bilirubin, aminotransferases, gamma-glutamyl transferase, alkaline phosphatase, and CMV polymerase chain reaction load, which showed a significant reduction after treatment in the intervention group (p<0.05) with oral VGCV, with very few side effects, whereas the control group showed no significant changes.
Conclusion
Oral VGCV can be used to effectively treat CMV infection with intrahepatic cholestasis without notable side effects.
5.Efficacy and Safety of Valganciclovir in Congenital Cytomegalovirus Infection with Isolated Intrahepatic Cholestasis:A Randomized Controlled Trial
Salahuddin MAHMUD ; Tanzila FARHANA ; Ataul Mustufa ANIK ; Fayaza AHMED ; Mashud PARVEZ ; Madhabi BAIDYA ; Rafia RASHID ; Farhana TASNEEM ; Ahmed Rashidul HASAN ; Mohammad Jahangir ALAM ; Shafi Ahmed MUAZ
Pediatric Gastroenterology, Hepatology & Nutrition 2024;27(5):298-312
Purpose:
Cytomegalovirus (CMV) infection affects the hepatic, neurologic, hematopoietic, respiratory, gastrointestinal, and other organs, resulting in a high mortality rate and longterm sequelae. It may cause acute or chronic hepatitis, or even lead to hepatic cirrhosis.Valganciclovir (VGCV) is an effective, safe, and well-tolerated treatment for congenital CMV infection, without any serious adverse effects. This study was conducted to evaluate the clinical, biochemical, and virological profiles of infants with CMV with intrahepatic cholestasis and to determine the outcomes with or without treatment with VGCV.
Methods:
Twenty infants aged <6 months diagnosed with congenital CMV infection with evidence of intrahepatic cholestasis were included in this study. Randomization was used to divide the study participants into 2 groups. The control group (n=10) was treated with only supportive management, and the intervention group (n=10) was treated with oral VGCV at 16 mg/kg/dose 12 hours a day for 6 weeks plus supportive treatments. Physical examinations and biochemical, serological, and virological tests were performed at the time of diagnosis and at the end of 6 weeks and 6 months.
Results:
The control and intervention groups were compared in terms of clinical and laboratory parameters such as jaundice, dark urine, pale stool, hepatomegaly, total bilirubin, aminotransferases, gamma-glutamyl transferase, alkaline phosphatase, and CMV polymerase chain reaction load, which showed a significant reduction after treatment in the intervention group (p<0.05) with oral VGCV, with very few side effects, whereas the control group showed no significant changes.
Conclusion
Oral VGCV can be used to effectively treat CMV infection with intrahepatic cholestasis without notable side effects.
6.Efficacy and Safety of Valganciclovir in Congenital Cytomegalovirus Infection with Isolated Intrahepatic Cholestasis:A Randomized Controlled Trial
Salahuddin MAHMUD ; Tanzila FARHANA ; Ataul Mustufa ANIK ; Fayaza AHMED ; Mashud PARVEZ ; Madhabi BAIDYA ; Rafia RASHID ; Farhana TASNEEM ; Ahmed Rashidul HASAN ; Mohammad Jahangir ALAM ; Shafi Ahmed MUAZ
Pediatric Gastroenterology, Hepatology & Nutrition 2024;27(5):298-312
Purpose:
Cytomegalovirus (CMV) infection affects the hepatic, neurologic, hematopoietic, respiratory, gastrointestinal, and other organs, resulting in a high mortality rate and longterm sequelae. It may cause acute or chronic hepatitis, or even lead to hepatic cirrhosis.Valganciclovir (VGCV) is an effective, safe, and well-tolerated treatment for congenital CMV infection, without any serious adverse effects. This study was conducted to evaluate the clinical, biochemical, and virological profiles of infants with CMV with intrahepatic cholestasis and to determine the outcomes with or without treatment with VGCV.
Methods:
Twenty infants aged <6 months diagnosed with congenital CMV infection with evidence of intrahepatic cholestasis were included in this study. Randomization was used to divide the study participants into 2 groups. The control group (n=10) was treated with only supportive management, and the intervention group (n=10) was treated with oral VGCV at 16 mg/kg/dose 12 hours a day for 6 weeks plus supportive treatments. Physical examinations and biochemical, serological, and virological tests were performed at the time of diagnosis and at the end of 6 weeks and 6 months.
Results:
The control and intervention groups were compared in terms of clinical and laboratory parameters such as jaundice, dark urine, pale stool, hepatomegaly, total bilirubin, aminotransferases, gamma-glutamyl transferase, alkaline phosphatase, and CMV polymerase chain reaction load, which showed a significant reduction after treatment in the intervention group (p<0.05) with oral VGCV, with very few side effects, whereas the control group showed no significant changes.
Conclusion
Oral VGCV can be used to effectively treat CMV infection with intrahepatic cholestasis without notable side effects.
7.Enterococcal species distribution, antibiotic susceptibility and Van gene frequency among patients at a tertiary hospital in Sabah
Nur Nashyiroh Izayati Mastor ; Vijay Kumar Subbiah ; Wan Nazirah Wan Abu Bakar ; Khurshida Begum ; M. Jahangir Alam ; Mohammad Zahirul Hoque
Malaysian Journal of Microbiology 2023;19(no.6):628-635
Aims:
Enterococcus bacteria, including some strains that are resistant to antibiotics like vancomycin can pose a threat to public health. The purpose of this study is to identify the species, antibiotic susceptibility profile and VanA/VanB gene frequencies in Enterococci isolated from patients at a tertiary hospital in Kota Kinabalu, Sabah.
Methodology and results :
Various bodily fluid specimens were collected from 162 patients between July 2019 and June 2021. Species confirmation and susceptibility testing were performed using an automated system. Subsequently, PCR was used to determine the presence of VanA and VanB genes. Species identification revealed the presence of five enterococcal species, namely E. faecalis (91), E. faecium (64), E. gallinarum (3) E. casseliflavus (2), along with one isolate each of E. hirae and E. avium. Overall, resistance to antibiotics like ampicillin, quinolones, tetracycline, gentamicin-syn, nitrofurantoin, glycopeptides and linezolid was generally low (<50%). However, a significant number of isolates displayed high resistance to erythromycin (>50% of samples), while resistance to tetracycline was more moderate. The frequencies of VanA and VanB genes were low (0.6 and 0%, respectively) and they were only detected in E. faecium.
Conclusion, significance and impact of study
The results indicate that while the prevalence of vancomycin-resistant enterococci (VRE) may be low, there is an increasing incidence of multidrug-resistant enterococci, particularly with regards to erythromycin.