1.Inflammatory Responses in the Muscle Coat of Stomach and Small Bowel in the Postoperative Ileus Model of Guinea Pig.
Hong Kyu CHOI ; Young Ho LEE ; Jong Pil PARK ; Kevin MIN ; Hyojin PARK
Yonsei Medical Journal 2013;54(6):1336-1341
PURPOSE: Small intestinal function returns first after surgery, and then the function of the stomach returns to normal after postoperative ileus (POI). The aim of this study was to investigate inflammatory responses in the muscle coat of stomach and small intestine in guinea pig POI model. MATERIALS AND METHODS: The distance of charcoal migration from pylorus to the distal intestine was measured. Hematoxylin and eosin (H&E) and immunohistochemical stain for calprotectin were done from the histologic sections of stomach, jejunum and ileum obtained at 3 and 6 hour after operation. Data were compared between sham operation and POI groups. RESULTS: The distance of charcoal migration was significantly reduced in the 3 and 6 hour POI groups compared with sham operated groups (p<0.05). On H&E staining, the degree of inflammation was significantly higher in the stomach of 3 hour POI groups compared with jejunum and ileum of POI groups or sham operated groups (p<0.05). Calprotectin positive cells were significantly increased in the muscle coat of stomach of 3 hour POI groups compared with jejunum and ileum of POI groups or sham operated groups (p<0.05). There was strong association between the degree of inflammation and calprotectin positive cells in stomach. CONCLUSION: Postoperative ileus induced by cecal manipulation significantly increased the degree of inflammation and calprotectin positive cells in the muscle coat of stomach as a remote organ. The relevance of degree of inflammation and the recovery time of ileus should be pursued in the future research.
Animals
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Charcoal
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Guinea Pigs
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Ileus/*immunology
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Male
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Muscle, Smooth/*immunology
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Stomach/*immunology
2.Glucagon-Like Peptide-1 Receptor Agonist Differentially Affects Brain Activation in Response to Visual Food Cues in Lean and Obese Individuals with Type 2 Diabetes Mellitus
Jae Hyun BAE ; Hyung Jin CHOI ; Kang Ik Kevin CHO ; Lee Kyung KIM ; Jun Soo KWON ; Young Min CHO
Diabetes & Metabolism Journal 2020;44(2):248-259
Background:
To investigate the effects of a glucagon-like peptide-1 receptor agonist on functional brain activation in lean and obese individuals with type 2 diabetes mellitus (T2DM) in response to visual food cues.
Methods:
In a randomized, single-blinded, crossover study, 15 lean and 14 obese individuals with T2DM were administered lixisenatide or normal saline subcutaneously with a 1-week washout period. We evaluated brain activation in response to pictures of high-calorie food, low-calorie food, and nonfood using functional magnetic resonance imaging and measured appetite and caloric intake in participants who were given access to an ad libitum buffet.
Results:
Obese individuals with T2DM showed significantly greater activation of the hypothalamus, pineal gland, parietal cortex (high-calorie food vs. low-calorie food, P<0.05), orbitofrontal cortex (high-calorie food vs. nonfood, P<0.05), and visual cortex (food vs. nonfood, P<0.05) than lean individuals with T2DM. Lixisenatide injection significantly reduced the functional activation of the fusiform gyrus and lateral ventricle in obese individuals with T2DM compared with that in lean individuals with T2DM (nonfood vs. high-calorie food, P<0.05). In addition, in individuals who decreased their caloric intake after lixisenatide injection, there were significant interaction effects between group and treatment in the posterior cingulate, medial frontal cortex (high-calorie food vs. low-calorie food, P<0.05), hypothalamus, orbitofrontal cortex, and temporal lobe (food vs. nonfood, P<0.05).
Conclusion
Brain responses to visual food cues were different in lean and obese individuals with T2DM. In addition, acute administration of lixisenatide differentially affected functional brain activation in these individuals, especially in those who decreased their caloric intake after lixisenatide injection.
3.Choroid plexus arteriovenous malformations: A systematic review
Patricia ZHAO ; Georgios A. MARAGKOS ; Kevin S. LIVINGSTONE ; Kathryn N. KEARNS ; Min S. PARK
Journal of Cerebrovascular and Endovascular Neurosurgery 2023;25(4):373-379
To systematically review the reported outcomes and complications of different treatment options for choroid plexus arteriovenous malformations (AVMs), specifically focusing on surgical resection and endovascular embolization.A systematic literature review was performed using a PubMed query for studies published between January 1975 and July 2021. All studies describing the clinical presentation, management, and outcome of confirmed choroid plexus AVM cases were included.A total of 20 studies were included in the final analysis. Of these, 18 were singlepatient case reports, one article contained two patients, and a single study was a cohort of 24 patients. Patient age ranged from one day to 61 years, with a mean of 31.8±20.4 years. Most choroid plexus AVMs were located in the lateral ventricles (14 patients, 70.0%), while there were four (20.0%) located in the third ventricle, and two in the fourth ventricle (10.0%). Almost all patients were treated with surgical resection (18 patients, 90%). In 14 patients (77.8%), complete resection of the AVM was achieved. A residual AVM was reported in one case (5.6%). Most patients were reported to have improved from their presentation status over time (14 patients, 70.0%). Presence or absence of long-term sequelae (e.g., neurologic deficits) were reported for 14 patients (70%). Eleven of these patients (78.6%) were reported to have no neurological sequelae.While data on choroid plexus AVMs remains limited, the available evidence suggests gross total resection of lesions in this location can be safely achieved with subsequent reduction in preoperative symptoms.
4.Causes, functional outcomes and healthcare utilisation of people with cerebral palsy in Singapore.
Zhi Min NG ; Jeremy B LIN ; Poh Choo KHOO ; Victor Samuel RAJADURAI ; Derrick W S CHAN ; Hian Tat ONG ; Janice WONG ; Chew Thye CHOONG ; Kim Whee LIM ; Kevin B L LIM ; Tong Hong YEO
Annals of the Academy of Medicine, Singapore 2021;50(2):111-118
INTRODUCTION:
A voluntary cerebral palsy (CP) registry was established in 2017 to describe the clinical characteristics and functional outcomes of CP in Singapore.
METHODS:
People with CP born after 1994 were recruited through KK Women's and Children's Hospital, National University Hospital and Cerebral Palsy Alliance Singapore. Patient-reported basic demographics, service utilisation and quality of life measures were collected with standardised questionnaires. Clinical information was obtained through hospital medical records.
RESULTS:
Between 1 September 2017 and 31 March 2020, 151 participants were recruited. A majority (n=135, 89%) acquired CP in the pre/perinatal period, where prematurity (n=102, 76%) and the need for emergency caesarean section (n=68, 50%) were leading risk factors. Sixteen (11%) of the total participants had post-neonatally acquired CP. For predominant CP motor types, 109 (72%) had a spastic motor type; 32% with spastic mono/hemiplegia, 41% diplegia, 6% triplegia and 21% quadriplegia. The remaining (42, 27.8%) had dyskinetic CP. Sixty-eight (45.0%) participants suffered significant functional impairment (Gross Motor Functional Classification System levels IV-V). Most participants (n=102, 67.5%) required frequent medical follow-up (≥4 times a year).
CONCLUSION
Optimisation of pre- and perinatal care to prevent and manage prematurity could reduce the burden of CP and their overall healthcare utilisation.
5.One-year survival in recipients older than 50 bridged to heart transplant with Impella 5.5 via axillary approach.
Smit PAGHDAR ; Smruti DESAI ; Ji-Min JANG ; Jose RUIZ ; Sharan MALKANI ; Parag PATEL ; Daniel S YIP ; Juan C LEONI ; Jose NATIVI ; Basar SAREYYUPOGLU ; Kevin LANDOLFO ; Si PHAM ; Rohan M GOSWAMI
Journal of Geriatric Cardiology 2023;20(5):319-329
BACKGROUND:
Optimizing patients with advanced heart failure before orthotopic heart transplantation (OHT), especially in patients greater than 50 years old, is imperative to achieving successful post-transplant outcomes. Complications are well-described for patients bridged to transplant (BTT) with durable left ventricular assist device (LVAD) support. Given the lack of data available in older recipients after the recent increase in mechanical support use, we felt it crucial to report our center's one-year outcomes in older recipients after heart transplantation with percutaneously placed Impella 5.5 as a BTT.
METHODS:
Forty-nine OHT patients were supported with the Impella 5.5 intended as a bridge between December 2019 and October 2022 at Mayo Clinic in Florida. Data were extracted from the electronic health record at baseline and during their transplant episode of care after Institutional Review Boards approval as exempt for retrospective data collection.
RESULTS:
Thirty-eight patients aged 50 or older were supported with Impella 5.5 as BTT. Ten patients underwent heart and kidney transplantation within this cohort. The median age at OHT was 63 (58-68) years, with 32 male (84%) and six female patients (16%). Etiology was divided into ischemic (63%) and non-ischemic cardiomyopathy (37%). The baseline median ejection fraction was 19% (15-24). Most patients were in blood group O (60%), and 50% were diabetic. The average duration of support was 27 days (range 6-94). The median duration of follow-up is 488 days (185-693). For patients that have reached the 1-year follow-up timeframe (22 of 38, 58%), the 1-year post-transplant survival is 95%.
CONCLUSION
Our single-center data provides awareness for using the Impella 5.5 percutaneously placed axillary support device in older heart failure patients in cardiogenic shock as a bridge to transplantation. One-year survival outcomes after heart transplantation are excellent despite the older recipient's age and prolonged pre-transplant support.