Specialized Proresolving Mediators for Therapeutic Interventions Targeting Metabolic and Inflammatory Disorders

Uncontrolled inflammation is considered the pathophysiological basis of many prevalent metabolic disorders, such as nonalcoholic fatty liver disease, diabetes, obesity, and neurodegenerative diseases. The inflammatory response is a self-limiting process that produces a superfamily of chemical mediators, called specialized proresolving mediators (SPMs). SPMs include the ω-3-derived family of molecules, such as resolvins, protectins, and maresins, as well as arachidonic acid-derived (ω-6) lipoxins that stimulate and promote resolution of inflammation, clearance of microbes, and alleviation of pain and promote tissue regeneration via novel mechanisms. SPMs function by binding and activating G protein-coupled receptors, such as FPR2/ALX, GPR32, and ERV1, and nuclear orphan receptors, such as RORα. Recently, several studies reported that SPMs have the potential to attenuate lipid metabolism disorders. However, the understanding of pharmacological aspects of SPMs, including tissue-specific biosynthesis, and specific SPM receptors and signaling pathways, is currently limited. Here, we summarize recent advances in the role of SPMs in resolution of inflammatory diseases with metabolic disorders, such as nonalcoholic fatty liver disease and obesity, obtained from preclinical animal studies. In addition, the known SPM receptors and their intracellular signaling are reviewed as targets of resolution of inflammation, and the currently available information on the therapeutic effects of major SPMs for metabolic disorders is summarized.

Specialized Proresolving Mediators for Therapeutic Interventions Targeting Metabolic and Inflammatory Disorders

Uncontrolled inflammation is considered the pathophysiological basis of many prevalent metabolic disorders, such as nonalcoholic fatty liver disease, diabetes, obesity, and neurodegenerative diseases. The inflammatory response is a self-limiting process that produces a superfamily of chemical mediators, called specialized proresolving mediators (SPMs). SPMs include the ω-3-derived family of molecules, such as resolvins, protectins, and maresins, as well as arachidonic acid-derived (ω-6) lipoxins that stimulate and promote resolution of inflammation, clearance of microbes, and alleviation of pain and promote tissue regeneration via novel mechanisms. SPMs function by binding and activating G protein-coupled receptors, such as FPR2/ALX, GPR32, and ERV1, and nuclear orphan receptors, such as RORα. Recently, several studies reported that SPMs have the potential to attenuate lipid metabolism disorders. However, the understanding of pharmacological aspects of SPMs, including tissue-specific biosynthesis, and specific SPM receptors and signaling pathways, is currently limited. Here, we summarize recent advances in the role of SPMs in resolution of inflammatory diseases with metabolic disorders, such as nonalcoholic fatty liver disease and obesity, obtained from preclinical animal studies. In addition, the known SPM receptors and their intracellular signaling are reviewed as targets of resolution of inflammation, and the currently available information on the therapeutic effects of major SPMs for metabolic disorders is summarized.

Prevalence and Risk Factors for Carbapenem-Resistant Enterobacteriaceae Colonization in Patients with Stroke

This retrospective case-control study investigated the prevalence and risk factors of carbapenem-resistant Enterobacteriaceae (CRE) colonization in stroke patients within 6 months of onset. Forty-three patients confirmed to have CRE colonization in our hospital from January 2017 to December 2018 were included in this study. The control group included 44 stroke patients who had carbapenem-susceptible Enterobacteriaceae colonization. The patients were age- (± 3 years) and sex-matched. Their demographic and clinical characteristics were analyzed to identify the risk factors for CRE colonization using multivariate logistic regression analysis. During the study period, the prevalence of CRE was 2.9% (105/3,657). In the univariate analysis, factors associated with CRE colonization included the use and duration of antibiotic intake; admission to intensive care unit (ICU); and use of enteral feeding tube, urethral Foley catheter, tracheostomy, and central venous catheter. In the multivariate analysis, use and duration of antibiotic intake and admission to ICU persisted as independent factors. CRE should be considered when antibiotics are administered to a stroke patient, especially if the administration period is more than 2 weeks, and if the stroke patient has been admitted to the ICU. This study suggests preventing post-stroke infections and, if possible, reducing ICU admissions and preventing CRE transmission in all stroke patients admitted to the ICU.

Calcaneal Osteomyelitis Presenting as a Paradoxical Reaction during Treatment of Multidrug-Resistant Tuberculosis

Tuberculosis in the foot progresses gradually; thus, diagnosis is usually delayed, and early treatment is rarely provided. If osteomyelitis occurs due to delayed diagnosis and treatment, surgical treatment should be considered. We report the case of a 46-year-old man with osteomyelitis of the calcaneus who was diagnosed with multidrug-resistant pulmonary tuberculosis and he was treated with anti-tuberculosis drugs. Bilateral adrenal masses, abscess of both testes and a small wound in the left plantar heel were observed. Both adrenal masses and abscess were regarded as paradoxical reaction of anti-tuberculosis treatment. After 1 month, he developed a pain in the left plantar heel that was compatible with calcaneal osteomyelitis in radiological features. He underwent right orchiectomy for right scrotal abscess aggravation and surgical treatment for left calcaneal osteomyelitis. Mycobacterium tuberculosis was confirmed by polymerase chain reaction. The patient was immobilized by cast for 8 weeks and the heel pain gradually improved.

Association of Brain Lesions and Videofluoroscopic Dysphagia Scale Parameters on Patients With Acute Cerebral Infarctions

OBJECTIVE: To investigate the characteristics and risk factors of dysphagia using the videofluoroscopic dysphagia scale (VDS) with a videofluoroscopic swallowing study (VFSS) in patients with acute cerebral infarctions. METHODS: In this retrospective study, the baseline VFSS in 275 stroke patients was analyzed. We divided patients into 8 groups according to lesion areas commonly observed on brain magnetic resonance imaging. Dysphagia characteristics and severity were evaluated using the VDS. We also analyzed the relationship between clinical and functional parameters based on medical records and VDS scores. RESULTS: In comparison studies of lesions associated with swallowing dysfunction, several groups with significant differences were identified. Apraxia was more closely associated with cortical middle cerebral artery territory lesions. Vallecular and pyriform sinus residue was more common with lesions in the medulla or pons. In addition, the results for the Korean version of the Modified Barthel Index (K-MBI), a functional assessment tool, corresponded to those in the quantitative evaluation of swallowing dysfunctions. CONCLUSION: A large cohort of patients with cerebral infarction was evaluated to determine the association between brain lesions and swallowing dysfunction. The results can be used to establish a specific treatment plan. In addition, the characteristic factors associated with swallowing dysfunctions were also confirmed.

Effect of Computerized Neuropsychologic Test in Subacute Post-Stroke Patient With Cognitive Impairment / 고신대학교의과대학학술지

OBJECTIVES: To investigate the effects of Computerized Neuropsychologic Test (CNT) on cognitive function and daily life performance in subacute post-stroke patients with cognitive impairment. METHODS: Korean Mini-Mentals State Examination (K-MMSE), Korean version of Modified Barthel Index (K-MBI) were investigated in 125 subacute post-stroke patients with cognitive impairment. We analyzed K-MMSE and K-MBI which were conducted 63 patients who had received CNT and 62 patient who had not received CNT from baseline to 8 weeks follow-up. In the experimental group, initial K-MMSE and K-MBI were conducted 13.3 ± 6.8 weeks after the onset of stroke and their age was 63.4 ± 13.3. In the control group, initial K-MMSE and K-MBI were conducted 13.2 ± 7.7 weeks after the onset of stroke and their age was 65.1 ± 11.6. RESULTS: The 8 weeks follow-up total K-MMSE score and total K-MBI score of experimental group were significantly higher than control group (P 0.05). In K-MMSE subsection, change of orientation, registration, language and visual reconstruction were correlated with total K-MBI s core after CNT. Especially, the experimental group, total K-MBI score of the left hemisphere damage group was significantly higher than the right hemisphere damage group (P < 0.05). CONCLUSIONS: This study shows that CNT is effective on subacute post-stroke patients with cognitive impairment. Improvement of cognitive function can expect a positive outcome on daily life performance, in particular, it can be expected to improve the prognosis of patients with stroke, the left hemisphere lesions.

Features of Golf-Related Shoulder Pain in Korean Amateur Golfers

OBJECTIVE: To investigate the causes and characteristics of golf-related shoulder injuries in Korean amateur golfers. METHODS: Golf-related surveys were administered to, and ultrasonography were conducted on, 77 Korean amateur golfers with golf-related shoulder pain. The correlation between the golf-related surveys and ultrasonographic findings were investigated. RESULTS: The non-dominant shoulder is more likely to have golf-related pain and abnormal findings on ultrasonography than is the dominant shoulder. Supraspinatus muscle tear was the most frequent type of injury on ultrasonography, followed by subscapularis muscle tear. Investigation of the participants' golf-related habits revealed that only the amount of time spent practicing golf was correlated with supraspinatus muscle tear. No correlation was observed between the most painful swing phases and abnormal ultrasonographic findings. Participants who had not previously visited clinics were more likely to present with abnormal ultrasonographic findings, and many of the participants complained of additional upper limb pain. CONCLUSION: Golf-related shoulder injuries and pain are most likely to be observed in the non-dominant shoulder. The supraspinatus muscle was the most susceptible muscle to damage. A correlation was observed between time spent practicing golf and supraspinatus muscle tear.