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Choi D, Choi S, Chang J, Park SM. Exposure to oral bisphosphonates and risk of gastrointestinal cancer. Osteoporos Int 2020; 31:775-782. [PMID: 32034451 DOI: 10.1007/s00198-020-05327-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 01/30/2020] [Indexed: 01/09/2023]
Abstract
UNLABELLED Few studies have explored the association of oral bisphosphonate exposure and gastrointestinal cancer within Asian populations. In this study, we investigated 45,397 Korean women from the nationwide population-based cohort from 2002 to 2013. Oral bisphosphonate exposure did not appear to be associated with elevated or reduced risk for gastrointestinal cancer. INTRODUCTION While several studies suggested increased risk in upper gastrointestinal (GI) cancer or reduced risk in colorectal cancer upon bisphosphonate exposure, the association is less explored within Asian populations. We investigated the effect of oral bisphosphonate exposure on the risk of GI cancers within a nationwide population-based cohort. METHODS This study used two separate cohorts. The first cohort included 45,397 women aged 60 years or older from the National Health Insurance Service-Health Screening Cohort during 2002-2013. Participants were classified into bisphosphonate users and non-users based on drug exposure during 2002-2007, and followed-up from the index date of January 1, 2008. The second cohort included 25,665 newly diagnosed osteoporosis patients who started taking oral bisphosphonate during 2003-2008. After 4 years of drug exposure period, patients were separated into quartiles based on cumulative oral bisphosphonate exposure. Participants were followed-up until December 31, 2013 for GI cancer, stomach cancer, and colorectal cancer. Cox proportional hazard regression models were used to assess the hazard ratios (HRs) and 95% confidence intervals (CIs) for the cancer risks. RESULTS Compared to bisphosphonate non-users, no significant risk difference was observed among bisphosphonate users on GI (HR 1.06; 95% CI 0.87-1.28), stomach (HR 1.11; 95% CI 0.85-1.47) and colorectal cancers (HR 1.04; 95% CI 0.79-1.37). Among bisphosphonate users, increasing doses of bisphosphonate exposure was not associated with elevated or reduced risk for GI cancer (p for trend 0.573). CONCLUSION Oral bisphosphonate use did not appear to be associated with elevated or reduced risk for GI cancers.
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Kim TH, Kim HJ, Lee SH, Cheon YP, Choi D. Expressions of Semenogelin Gene in Male Syrian Hamsters according to Photoperiod. Dev Reprod 2020; 23:355-365. [PMID: 31993541 PMCID: PMC6985293 DOI: 10.12717/dr.2019.23.4.355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/12/2019] [Accepted: 11/25/2019] [Indexed: 11/17/2022]
Abstract
The morphogenetically matured spermatozoa (sperm) are generated in the testes by
the spermatogenesis. They travel male reproductive tract with many substances
secreted from the accessory reproductive organs. One of the substances is the
semenogelin (SEMG) released from the seminal vesicles that is involved in the
post-testicular maturation. The expression of SEMG gene was investigated in
seminal vesicle tissues of sexually matured and regressed male Syrian hamsters
by reverse transcription polymerase chain reaction (RT-PCR). The SEMG gene was
uniquely identified in the seminal vesicles of the matured Syrian hamsters and
compared to the genes reported previously. But the expression of SEMG gene was
not observed in reproductively and completely regressed testes of Syrian
hamsters. These results indicate that the expressions of the SEMG gene are
related to the reproductive capability in the male Syrian hamsters.
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Carr AS, Shah S, Choi D, Blake J, Phadke R, Gilbertson J, Whelan CJ, Wechalekar AD, Gillmore JD, Hawkins PN, Reilly MM. Spinal Stenosis in Familial Transthyretin Amyloidosis. J Neuromuscul Dis 2019; 6:267-270. [PMID: 30856118 DOI: 10.3233/jnd-180348] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Here we describe a patient with genetically confirmed ATTR, a family history of the disease and histological confirmation following carpal tunnel release surgery but no other manifestations. The first major neurological or systemic manifestation was cauda equina syndrome with ATTR deposits contributing to lumbar spinal stenosis. Recent gene therapy trials showed improvement in the neuropathy in TTR amyloidosis. This case highlights the need for awareness of the heterogeneous neurological phenotype seen in ATTR to aid earlier diagnosis especially now that disease modifying therapies are available.
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Kim YH, Her AY, Jeong MH, Kim BK, Lee SY, Hong SJ, Shin DH, Ahn CM, Kim JS, Ko YG, Choi D, Hong MK, Jang Y. P4393Current smoking and gender difference in South Korean AMI patients who underwent PCI with DES. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
There is some debate on whether or not there is a gender difference is present between current smoking and cardiovascular disease.
Purpose
We decide to evaluate the impact of sex difference on the 2-year clinical outcomes in Korean acute myocardial infarction (AMI) patients who currently smoke and who underwent percutaneous coronary intervention (PCI) with drug-eluting stents (DES).
Methods
The data of this study was obtained from the Korea Acute Myocardial Infarction (KAMIR) registry. More than fifty high-volume universites or community hospitals with facilities for primary PCI and onsite cardiac surgery participated in this KAMIR registry. A total of 12565 current smoker AMI patients were enrolled and divided into the male (n=11767, 93.6%) or female (n=798, 6.4%) group. The clinical endpoint was the occurrence of major adverse cardiac events (MACE) defined as all-cause death, recurrent myocardial infarction (re-MI), and total repeat revascularization.
Results
Before risk adjustment, the cumulative incidences of MACE (7.2% vs. 10.0%, hazard ratio [HR], 1.419; 95% confidence interval [CI], 1.125–1.790; P=0.003), all-cause death (HR, 1.988; 95% CI, 1.417–2.789; P<0.001), and re-MI (HR, 1.885; 95% CI, 1.154–3.078; P=0.011) were significantly higher in the female group compared with the male group. However, after adjustment the cumulative incidences of MACE (adjusted HR, 1.047; 95% CI, 0.756–1.450; P=0.782), all-cause death, re-MI, total repeat revascularization, TLR, TVR, and non-TVR were similar between the two groups.
Clinical outcomes at 2-year Outcomes Cumulative Events at 2-year (%) Unadjusted Adjusted* Propensity-score adjusted Male Female Log-rank Hazard Ratio (95% CI) p value Hazard Ratio (95% CI) p value Hazard Ratio (95% CI) p value MACE 819 (7.2) 78 (10.0) 0.003 1.419 (1.125–1.790) 0.003 1.047 (0.756–1.450) 0.782 1.133 (0.871–1.473) 0.352 All-cause death 283 (2.5) 38 (4.8) <0.001 1.988 (1.417–2.789) <0.001 0.764 (0.457–1.279) 0.306 1.105 (0.744–1.641) 0.620 Cardiac death 224 (1.9) 25 (3.2) 0.016 1.654 (1.094–2.500) 0.017 0.512 (0.261–1.005) 0.052 0.822 (0.511–1.322) 0.419 Re-MI 142 (1.3) 18 (2.4) 0.010 1.885 (1.154–3.078) 0.011 1.741 (0.887–3.419) 0.107 1.835 (1.109–3.375) 0.062 Total revascularization 444 (4.0) 27 (3.6) 0.594 0.900 (0.610–1.327) 0.594 1.069 (0.654–1.748) 0.789 0.956 (0.627–1.458) 0.835 TLR 121 (1.1) 8 (1.1) 0.956 0.980 (0.479–2.004) 0.956 0.955 (0.366–2.497) 0.926 0.868 (0.395–1.910) 0.726 TVR 228 (2.1) 14 (1.9) 0.726 0.908 (0.529–1.558) 0.726 1.051 (0.518–2.135) 0.890 0.935 (0.519–1.684) 0.823 Non-TVR 223 (2.0) 13 (1.7) 0.602 0.862 (0.493–1.508) 0.602 1.060 (0.536–2.097) 0.867 0.942 (0.514–1.726) 0.847
Conclusion
Before risk adjustment, a gender difference was suggested in the female group compared with the male in these current smoker South Korean AMI patients during a 2-year follow-up period. However, after adjustment, gender difference was not observed in these AMI patients with a history of current smoking.
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Kim YH, Her AY, Jeong MH, Kim BK, Lee SY, Hong SJ, Shin DH, Ahn CM, Kim JS, Ko YG, Choi D, Hong MK, Jang Y. P833Two-year clinical outcomes between statin with ACE inhibitor or ARB in patients with ST-segment elevation myocardial infarction after successful PCI with DES. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Limited comparative data are available.
Purpose
We decided to compare 2-year major clinical outcomes between statin with ACEI and statin ARB therapy in patients with STEMI after PCI with drug-eluting stents (DES).
Methods
A total 11706 STEMI patients who underwent PCI with DES and who prescribed statin were enrolled and they were divided into two groups, the statin with ACEI group (n=8705) and the statin with ARB group (n=3001). The primary endpoint was the major adverse cardiac events (MACE) defined as all-cause death, recurrent myocardial infarction (re-MI), target lesion revascularization (TLR), target vessel revascularization (TVR), non-TVR. The secondary endpoints were the cumulative incidences of individual components of MACE and target vessel failure (TVF), a composite of death related to the target vessel, re-MI, or clinically driven TVR.
Results
Two PSM groups (2835 pairs, n=5670, C-statistic = 0.680) were generated. The relative risk of MACE was higher in the statin with ARB group compared to statin with ACEI groups after propensity score-matched (PSM) analysis (hazard ratio [HR]: 1.323, 95% confidence interval [CI]: 1.085–1.613, p=0.006). The relative risks of cardiac death (HR: 1.831, 95% CI: 1.199–2.740, p=0.005), total repeat revascularization (HR: 1.487, 95% CI: 1.133–1.950, p=0.004), and non-TVR (HR: 1.696, 95% CI: 1.122–2.564, p=0.012) were also higher in the statin with ARB group after PSM.
Outcomes Cumulative Events at 2-year (%) Hazard Ratio (95% CI) p value Statin + ACEI Statin + ARB Log-rank Propensity score matched Patients MACE 173 (6.5) 225 (8.5) 0.006 1.323 (1.085–1.613) 0.006 All-cause death 58 (2.2) 80 (3.0) 0.054 1.391 (0.992–1.950) 0.056 Cardiac death 35 (1.3) 63 (2.3) 0.004 1.831 (1.199–2.740) 0.005 Re-MI 39 (1.5) 44 (1.7) 0.548 1.141 (0.742–1.756) 0.548 Total repeat revascularization 88 (3.4) 128 (4.9) 0.004 1.487 (1.133–1.950) 0.004 TLR 26 (1.0) 40 (1.5) 0.075 1.561 (0.953–2.558) 0.077 TVR 53 (2.0) 71 (2.8) 0.086 1.364 (0.955–1.946) 0.088 Non-TVR 36 (1.4) 60 (2.3) 0.011 1.696 (1.122–2.564) 0.012 TVF 140 (5.3) 173 (6.6) 0.050 1.249 (1.000–1.561) 0.050
Conclusions
In this study, we suggest that the combination of statin with ACEI may be beneficial for reducing the cumulative incidences of MACE, total repeat revascularization rate, and non-TVR rather than the statin with ARB after PCI with DES in STEMI patients.
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Kim YH, Her AY, Jeong MH, Kim BK, Lee SY, Hong SJ, Shin DH, Ahn CM, Kim JS, Ko YG, Choi D, Hong MK, Jang Y. P5362Impact of statin therapy on long-term clinical outcomes between STEMI and NSTEMI after stent implantation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Although European guideline recommends that statin should be given to all patients with acute myocardial infarction (AMI), irrespective of cholesterol concentration, limited studies were focused on the long-term effects of statin therapy between ST-segment elevation MI (STEMI) and non-ST-segment elevation MI (NSTEMI).
Purpose
The authors conducted the study to compare the relative beneficial role of statin on 2-year major clinical outcomes between STEMI and NSTEMI in patients who underwent successful PCI with DES.
Methods
Finally, a total of 26317 AMI patients who underwent stent implantation and who were prescribed the statin were enrolled and they were separated into two groups; the STEMI group (n=15002) and the NSTEMI group (n=11315). The clinical endpoint was the occurrence of major adverse cardiac events (MACE) defined as all-cause death, recurrent myocardial infarction (re-MI), total coronary revascularization (target lesion revascularization [TLR], target vessel revascularization [TVR], non-TVR) during 2-year follow-up period.
Results
After propensity score-matched (PSM) analysis, two PSM groups (7746 pairs, n=15492, C-statistic = 0.766) were generated. In the total study population, the cumulative incidences of MACE, all-cause death, and cardiac death were significantly higher in the NSTEMI group. However, after PSM, the cumulative incidence of all-cause death (Hazard ratio, 1.386; 95% CI, 1.133–1.696; p=0.002) was significantly higher in the NSTEMI group. The cumulative incidences of MACE, cardiac death, re-MI, total revascularization, TLR, TVR, and non-TVR were similar between the two groups (Table 1).
Outcomes Cumulative Events at 2-year (%) Hazard Ratio (95% CI) p value STEMI NSTEMI Log-rank Propensity score matched patients MACE 532 (7.2) 584 (8.1) 0.092 1.106 (0.984–1.244) 0.092 All-cause death 163 (2.2) 224 (3.1) 0.001 1.386 (1.133–1.696) 0.002 Cardiac death 121 (1.5) 148 (2.0) 0.088 1.232 (0.969–1.566) 0.089 Re-MI 117 (1.6) 107 (1.5) 0.545 0.922 (0.710–1.199) 0.545 Total revascularization 291 (4.1) 307 (4.4) 0.422 1.068 (0.910–1.254) 0.423 TLR 92 (1.3) 89 (1.2) 0.880 0.978 (0.731–1.309) 0.880 TVR 173 (2.4) 184 (2.6) 0.478 1.078 (0.876–1.327) 0.478 Non-TVR 123 (1.7) 130 (1.9) 0.593 1.070 (0.836–1.369) 0.539
Conclusion
The mortality reduction capability of statin was more prominent in the STEMI group compared with the NSTEMI group.
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Kim YH, Her AY, Jeong MH, Kim BK, Lee SY, Hong SJ, Shin DH, Ahn CM, Kim JS, Ko YG, Choi D, Hong MK, Jang Y. P5494Impact of the gender difference on long-term clinical outcomes in dyslipidemic South Korean AMI patients who underwent PCI with new-generation DES. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
There are limited comparative data concerning long-term major clinical outcomes between male and female in dyslipidemic AMI patients after PCI with new-generation DES.
Purpose
We thought to investigate the impact of gender difference on the 2-year clinical outcomes.
Methods
Finally, a total of 2403 eligible dyslipidemic AMI patients who underwent PCI with new-generation DES were enrolled and they were separated into two groups; the male group (n=1800) and the female group (n=603). The primary endpoint was major adverse cardiac events (MACE) defined as all-cause death, recurrent myocardial infarction (re-MI), target lesion revascularization (TLR), and target vessel revascularization (TVR). The secondary endpoints were the incidence of the individual components of MACE and target vessel failure (TVF), a composite of death related to the target vessel, re-MI, or clinically driven TVR
Results
Two propensity score-matched (PSM) groups (422 pairs, n=844, C-statistic = 0.850) were generated. In the total study population, the cumulative incidences of MACE, all-cause death, re-MI, and TVF were significantly higher in the female group compared with the male group. However, after propensity score-matched (PSM) analysis, the cumulative incidences of MACE (HR, 0.971; 95% CI, 0.628–1.501; p=0.895), all-cause death (HR, 1.061; 95% CI, 0.536–2.100; p=0.865), re-MI (HR, 1.212; 95% CI, 0.433–2.907; p=0.813), and TVF (HR, 0.764; 95% CI, 0.474–1.229; p=0.267) were similar between the two groups. In addition, the cumulative incidences of cardiac death, TLR, TVR were not significantly different between the two groups (Table 1).
Outcomes Cumulative Events at 2-year (%) Hazard Ratio (95% CI) p value Male Female Log-rank Propensity score matched patients MACE 41 (10.4) 40 (10.3) 0.895 0.971 (0.628–1.501) 0.895 All-cause death 16 (4.0) 17 (4.2) 0.865 1.061 (0.536–2.100) 0.865 Cardiac death 13 (3.3) 9 (2.2) 0.391 0.691 (0.295–1.616) 0.393 Re-MI 8 (2.0) 9 (2.4) 0.813 1.212 (0.433–2.907) 0.813 TLR 7 (1.8) 6 (1.6) 0.781 0.857 (0.298–2.550) 0.781 TVR 16 (4.3) 10 (2.7) 0.236 0.623 (0.283–1.373) 0.241 TVF 39 (10.2) 30 (7.8) 0.265 0.764 (0.474–1.229) 0.267
Conclusion
The gender difference was not apparent in these dyslipidemic South Korean AMI patients who underwent PCI with new-generation DES during 2-year follow-up period.
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Kim YB, Cheon YP, Choi D, Lee SH. Adverse Effect of Nonylphenol on the Reproductive System in F2 Male Mice : A Qualitative Change? Dev Reprod 2019; 23:255-262. [PMID: 31660452 PMCID: PMC6812968 DOI: 10.12717/dr.2019.23.3.255] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 08/13/2019] [Accepted: 09/05/2019] [Indexed: 12/20/2022]
Abstract
Previously, we reported negative effects of low-dose nonylphenol (NP) exposure on
the reproductive organs of F1 male mice. In the present study was further
investigated the endocrine disrupting effect of NP exposure to F2 generation
male mice. Mice were divided into 2 groups; (1) CON, control animals and (2)
NP-50 (50 μg/L), animals were treated with NP via drinking water. NP
exposures were continuously conducted from parental pre-mating period until the
postnatal day (PND) 55 of F2 offsprings. Mice were sacrificed on PND 55 and the
reproductive tissue weights were measured. The initial (at PND 21) and terminal
(PND 55) body weights of the NP-50 group animals were not significantly
different from those of control group animals. NP exposure fail to induce a
significant weight change of the testes, seminal vesicle and prostate except
absolute epididymal weight (p<0.05). However,
pathohistological studies revealed that NP-treated F2 animals showed evident
decrease in seminiferous tubule diameters, reduced luminal area and number of
germ cells. Also, sloughing morphologies in the tubules were notable. In the
caudal epididymis, fewer mature sperms and swollen epithelial cells were found
in the NP-treated group. The present study demonstrated that the subchronic
low-dose NP exposure induced pathohistological abnormalities in testis and
epididymis of F2 mice, and we assumed that these ‘qualitative’
changes in reproductive tissues could be derived from the epigenetic
modifications such as DNA methylation, histone modification, altered DNA
accessibility and chromatin structure. Further studies are needed to achieve a
better understanding on the multi- or trans-generational effects of NP on
the reproductive health and a human application.
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Kim J, Cha S, Lee MY, Hwang YJ, Yang E, Choi D, Lee SH, Cheon YP. Chronic and Low Dose Exposure to Nonlyphenol or Di(2-Ethylhexyl) Phthalate Alters Cell Proliferation and the Localization of Steroid Hormone Receptors in Uterine Endometria in Mice. Dev Reprod 2019; 23:263-275. [PMID: 31660453 PMCID: PMC6812976 DOI: 10.12717/dr.2019.23.3.263] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 08/30/2019] [Accepted: 09/19/2019] [Indexed: 02/04/2023]
Abstract
Based on our preliminary results, we examined the possible role of low-dose and
chronic-exposing of the chemicals those are known as endocrine disrupting
chemical (EDC), on the proliferation of uterine endometrium and the localization
of steroid receptors. Immunohistochemical or immunofluorochemical methodology
were employed to evaluate the localization of antigen identified by monoclonal
antibody Ki 67 protein (MKI67), estrogen receptor 1 (ESR1), estrogen receptor 2
(ESR2), and progesterone receptor (PGR). In 133 μg/L and 1,330
μg/L di(2-ethylhexyl) phthalate (DEHP) and 50 μg/L nonylphenol
(NP) groups, the ratio of MKI67 positive stromal cells was significantly
increased but not in 500 μg/L NP group. The ratios of MKI67 positive
glandular and luminal epithelial cells were also changed by the chronic
administration of NP and DEHP in tissue with dose specific manner. ESR1 signals
were localized in nucleus in glandular and luminal epithelia of control group
but its localization was mainly in cytoplasm in DEHP and NP administered groups.
On the other hand, it was decreased at nucleus of stromal cells in 1,330
μg/L DEHP group. The colocalization patterns of these nuclear receptors
were also modified by the administration of these chemicals. Such a tissue
specific and dose specific localization of ESR2 and PGR were detected as ESR1 in
all the uterine endometrial tissues. These results show that the chronic
lows-dose exposing of NP or DEHP modify the localization and colocalization of
ESRs and PGR, and of the proliferation patterns of the endometrial tissues.
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Park J, Kim J, Shin M, Choi D. P02.01 Analysis of Multimodal Intraoperative Monitoring During Intramedullary Spinal Ependymoma Surgery. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
BACKGROUND
To evaluate the validity of intraoperative somatosensory-evoked potential (SSEP) and motor-evoked potential (MEP) monitoring according to two different warning criteria for 6 months after intramedullary spinal ependymoma (IMSE) surgery.
MATERIAL AND METHODS
To evaluate the validity of intraoperative somatosensory-evoked potential (SSEP) and motor-evoked potential (MEP) monitoring according to two different warning criteria for 6 months after intramedullary spinal ependymoma (IMSE) surgery.
RESULTS
The success rates of SSEP and MEP monitoring were 84.9% and 83.7%, respectively. There was one indeterminate case in SSEP and six in MEP. All-or-none criterion in SSEP and MEP monitoring showed higher specificity, PPV, and DOR than 50% decline criterion during 6 months. During the follow up, 37 of 38 extremities (97.4%) and 21 of 29 extremities (72.4%) were observed the improvement of sensory and motor deficit, respectively. Seven indeterminate cases also showed good clinical outcomes. However, most patients remained some degree of neurologic deficit.
CONCLUSION
Many false positive and false negative results of SSEP and MEP monitoring occurred immediately postoperative period. All-or-none criterion was more beneficial for IMSE surgery than 50% decline criterion. This trend was maintained until 6 months after surgery.
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Choi D. Effects of Dietary Supplement Containing Melatonin on Reproductive Activity in Male Golden Hamsters. Dev Reprod 2019; 23:101-110. [PMID: 31321350 PMCID: PMC6635611 DOI: 10.12717/dr.2019.23.2.101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 04/25/2019] [Accepted: 04/02/2019] [Indexed: 11/26/2022]
Abstract
Melatonin is a pineal hormone that is synthesized and released at night under the
light and dark cycles of a day. Its effects on the reproductive activities have
well been established by the administration through various routes in
photoperiodic animals. It was also identified in plants and named
phytomelatonin. The capacity of the phytomelatonin was investigated in this
investigation whether it affects the reproductive function in male golden
hamster. As expected, animals housed in long photoperiod (long photoperiod,
LP>12.5 hours of lights in a day) had large testes and animals kept in
short photoperiod (SP≦12.5 hours of lights in a day) showed remarkably
reduced testes. The dietary supplement with melatonin itself induced the
complete involution of testes. Pistachios that were reported to contain a large
amount of melatonin demonstrated no effects at all in male golden hamsters.
These results suggest that dietary supplement containing melatonin-rich
foodstuff used in this investigation may not be enough to affect the
reproductive endocrine system in male golden hamsters.
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Won D, Choi D, Kim H. Clinical evaluation of the fourth-generation immunodiagnostic reagents “Elecsys HIV Duo” for screening HIV in specimens from Korean subjects. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Taylor MH, Choi D, Fitzpatrick SM, Gunn KN. Characterisation of aluminium release by the enFlow® fluid‐warming system in crystalloids and blood products. Anaesthesia 2019; 74:1374-1380. [DOI: 10.1111/anae.14697] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2019] [Indexed: 11/27/2022]
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Lee S, Jung J, Choi J, Piao M, Choi D, Lee J. 323 Natural antioxidant products from peanuts sprouts and citron seed oils exhibit a potent anti-inflammatory activity in the oxazolone-induced contact dermatitis model in vivo. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Usher I, Choi D. P92 What is a benign notochordal cell tumour? Journal of Neurology, Neurosurgery and Psychiatry 2019. [DOI: 10.1136/jnnp-2019-abn.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
ObjectivesCharacteristics from a large systematic review.DesignThe first systematic review of benign notochordal cell tumours.SubjectsAll studies, in any language, published at any time, identified using specified search terms.MethodsPreferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA).ResultsSo-called benign notochordal cell tumours exhibited the following features: pain was the sole presenting symptom in 37/81 (45.7%) and neurological deficit in 36/81 (44.4%). Incidental discovery upon imaging was reported in 8/81 (9.9%). Radiologically, lesions were small, (≤30 millimetres at their maximum diameter) in 57/65 (87.7%), hypointense on T1 sequences and hyperintense on T2 sequences on magnetic resonance imaging (106/130; 81.5%), did not enhance following contrast administration (62/74; 83.8%) and were non-lytic (80/160; 50.0%). Histologically, these tumours lacked myxoid matrix (66/84; 78.6%) and nuclear atypia (100/112; 89.3%). In those managed conservatively, follow up was between 8.5 and 120 months. Most were stable at follow up (22/25; 88.0%), one lesion grew (4.0%), one patient died of an unrelated cause (4.0%) and outcome was not stated in one case (4.0%).ConclusionsBNCTs exhibit a spectrum of features, none of which are pathognomonic and diagnosis is subjective. The majority of reports describe small, non-progressive, non-lytic lesions that lack contrast enhancement, intercellular myxoid matrix and nuclear atypia. They are nevertheless difficult to distinguish from small chordomas.
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Bartlett RD, Phillips JB, Choi D. P25 Hydrogel systems to enhance the delivery of cell therapy for traumatic spinal cord injury. Journal of Neurology, Neurosurgery and Psychiatry 2019. [DOI: 10.1136/jnnp-2019-abn.100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
ObjectivesCell therapies are an emerging therapeutic approach for spinal cord injury. We assessed the survival and phenotype of olfactory ensheathing cells (OECs) in hydrogel delivery systems suitable for clinical use.DesignLaboratory study.MethodsCell survival in different formulations of collagen and fibrin hydrogels was assessed using Syto 9 and propidium iodide. The proportion of cells staining positive for a key repair marker (p75NTR) was also quantified using immunocytochemistry and fluorescence microscopy.ResultsThere were significant differences in OEC survival between the various collagen and fibrin hydrogel formulations tested (p<0.001 one-way ANOVA, n=17). 10% v/v fibrin conferred the best cell survival with 85% of OECs remaining alive. Incorporating OECs into collagen hydrogels promoted the highest proportion of p75NTR immunopositive cells (78%) and this was significantly higher than both fibrin hydrogels and traditional monolayer culture (53% and 20%, respectively, p<0.0001 one-way ANOVA, n=24).ConclusionsCollagen and fibrin hydrogels both have the potential to enhance the delivery, survival and retention of transplanted OECs for spinal cord repair. Both materials are clinically scalable, promote favourable OEC survival and have the potential to increase the proportion of cells expressing a key repair marker (p75NTR). Optimised hydrogel delivery systems may provide a valuable approach to improve the delivery of OECs for spinal cord repair in the future.
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Kim J, Choi D, Paik E, Lee J, Bae D, Kim T. Laparoendoscopic Single Site Myomectomy with Uterine Artery Ligation via Retroperitoneal Approach is Feasible for Huge Uterine Myoma. J Minim Invasive Gynecol 2018. [DOI: 10.1016/j.jmig.2018.09.583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Park JI, Jeon BH, Kim TH, Kim HJ, Choi D. The Expressional Pattern of Epididymal Protease Inhibitor (EPPIN) in the Male Syrian Hamsters. Dev Reprod 2018; 22:253-262. [PMID: 30324162 PMCID: PMC6182231 DOI: 10.12717/dr.2018.22.3.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 08/22/2018] [Accepted: 09/05/2018] [Indexed: 11/26/2022]
Abstract
The spermatogenesis is the process by which spermatozoa are generated in the
testes. The spermatozoa travel male reproductive tract during which they meet
many substances secreted from reproductive organs. One of the substances is
epididymal protease inhibitor (EPPIN) that is involved in the post-testicular
maturation including capability of fertilizing the eggs. The expression of EPPIN
gene was investigated in various tissues of sexually mature and regressed male
Syrian hamsters by reverse transcription polymerase chain reaction (RT-PCR). The
EPPIN gene was identified in the testis and epididymis of the male Syrian
hamsters and compared to the genes reported previously. There was no expression
of EPPIN gene in reproductively and completely regressed testes of Syrian
hamster. These results suggest that the expressions of the EPPIN gene are
associated with the reproductive capability in the Syrian hamsters.
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Davis C, McCain J, Israel H, Choi D, Behrman D, Grewal N. Arthroscopy of Temporomandibular Joint Prosthesis, Preliminary Experience and Results. J Oral Maxillofac Surg 2018. [DOI: 10.1016/j.joms.2018.06.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Chennakrishnaiah S, Meehan B, D'Asti E, Montermini L, Lee TH, Karatzas N, Buchanan M, Tawil N, Choi D, Divangahi M, Basik M, Rak J. Leukocytes as a reservoir of circulating oncogenic DNA and regulatory targets of tumor-derived extracellular vesicles. J Thromb Haemost 2018; 16:1800-1813. [PMID: 29971917 DOI: 10.1111/jth.14222] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Indexed: 12/11/2022]
Abstract
Essentials Tumor-bearing mice were employed to follow oncogenic HRAS sequences in plasma, and blood cells. Cancer DNA accumulated in leukocytes above levels detected in exosomes, platelets and plasma. Extracellular vesicles and nucleosomes are required for uptake of tumor DNA by leukocytes. Uptake of tumor-derived extracellular vesicles by leukocytes triggers coagulant phenotype. SUMMARY Background Tumor-derived extracellular vesicles (EVs) and free nucleosomes (NSs) carry into the circulation a wealth of cancer-specific, bioactive and poorly understood molecular cargoes, including genomic DNA (gDNA). Objective Here we investigated the distribution of extracellular oncogenic gDNA sequences (HRAS and HER2) in the circulation of tumor-bearing mice. Methods and Results Surprisingly, circulating leukocytes (WBCs), especially neutrophils, contained the highest levels of mutant gDNA, which exceeded the amount of this material recovered from soluble fractions of plasma, circulating EVs, platelets, red blood cells (RBCs) and peripheral organs, as quantified by digital droplet PCR (ddPCR). Tumor excision resulted in disappearance of the WBC-associated gDNA signal within 2-9 days, which is in line with the expected half-life of these cells. EVs and nucleosomes were essential for the uptake of tumor-derived extracellular DNA by neutrophil-like cells and impacted their phenotype. Indeed, the exposure of granulocytic HL-60 cells to EVs from HRAS-driven cancer cells resulted in a selective increase in tissue factor (TF) procoagulant activity and interleukin 8 (IL-8) production. The levels of circulating thrombin-antithrombin complexes (TAT) were markedly elevated in mice harboring HRAS-driven xenografts. Conclusions Myeloid cells may represent a hitherto unrecognized reservoir of cancer-derived, EV/NS-associated oncogenic gDNA in the circulation, and a possible novel platform for liquid biopsy in cancer. In addition, uptake of this material alters the phenotype of myeloid cells, induces procoagulant and proinflammatory activity and may contribute to systemic effects associated with cancer.
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Irani M, Parrella A, O'Neill C, Lu V, Choi D, Rosenwaks Z, Palermo G. In vitro neospermatogenesis of human induced pluripotent stem cells. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.1052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Lu V, Parrella A, Choi D, Irani M, O'Neill C, Rosenwaks Z, Palermo G. Differentiating mouse-induced pluripotent stem cells into male germ cells through embryoid bodies. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.1050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Choi D, Cheung S, Xie P, Parrella A, Rosenwaks Z, Palermo G. Feasibility of gene knockout in human sperm cells using CRISPR-Cas9. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Parrella A, Choi D, Keating D, Rosenwaks Z, Palermo G. A microfluidic device for selecting the most progressively motile spermatozoa yields a higher rate of euploid embryos. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.955] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lee SH, Kim K, Lee CJ, Oh J, Park S, Kang SM, Choi D. P5391Statin and clinical outcome in patients >75 years without atherosclerotic cardiovascular disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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