Objective To investigate the proliferation effects induced by triiodothyronine (T3) in thyroid cancer cell lines,including follicular thyroid carcinoma cells (WRO),interstitial thyroid cancer cells (ARO) and papillary thyroid cancer cells (FB-2) and relationship with the thyroid receptor.Methods Different concentrations of thyroid hormone T3 inter acted on the three thyroid cancer cell lines,detected by MTT assay,achieved effective biological dose.To detect proliferation rates in all the cell lines using MTT assay,under the effective biological dose.RT-PCR and Western blot were used to detect the mRNA and protein expression of thyroid receptor.Results Cell proliferation induced depend on different concentrations (10 nmol/L,100 nmol/L and 1 μmol/L) thyroid hormone T3 in thyroid cancer cells FB-2,the proliferation rates were (128.78±0.31) ％,(171.94±0.40) ％,(178.04±0.14) ％,had dose-dependent relationship,which was the most effective physiological dose of 100 nmol/L,cell proliferation was significantly in WRO and ARO under 100 nmol/L[(149.06±0.06) ％,(158.87±0.03) ％],obviously in FB-2 [(167.92±0.08) ％].The expression in mRNA levels of thyroid receptor subtype TRα1 in WRO cells was more,low and no expression in the FB-2 and ARO,did not protein expression,mRNA and protein of subtype TRβ1 expressed in FB-2 and WRO cells,while expressed very little in ARO cells.Conclusion Thyroid hormone T3 can induce thyroid cell proliferation and expression of TRβ1 is relatively important.

Marine medicine is an important part of Chinese medicine and a growth point of marine economy development.Exploration on the exact weight ratios and curative effect to expand marine medicine clinical application is a significant issue in marine medicine research at this stage. This paper presented a research supposition of“documents retrieval, extraction of marine medicine cases, establishment of case database, statistic analysis, data mining, herb pair Game Theory model establishment, herb pair usage under fixed dosage and matching, in order to explore a new idea of researching marine medicine combined with Game Theory. Through the literature retrieval and text extraction, 458 cases with the herb pair ofLong-Gu (LG) andMu-Li(ML) were received to establish the partnership game model. The iterative removals of strictly dominated strategies were adopted. Assuming that LG and ML used with an equal amount of 30 g was the best response, which reached the Nash equilibrium. The results suggested that dosages of LG and ML used equally at the amount of 30 g, 25 g, 24 g, 20 g, 18 g, 15 g were rationalizable strategies. Frequencies of using an equal amount of 30 g LG and ML was the most of mathematical statistics. LG and ML of 30 g were used equivalently to treat symptoms such as insomnia, inappetence, chills, tinnitus, physically and mentally fatigued, spontaneous sweating and night sweating, and so on with the effect of tranquilizing and constricting. The results can be validated and complemented among association rules analysis, mathematical statistics and game model. It implied that it was feasible to apply mathematical statistics and data mining in combination with Game Theory to study the marine medicine herb pair.

OBJECTIVE To discuss the clinical traits,pathogenesis and TCM stepwise treatments of fungal urinary tract infection.METHODS According to the risk factors and clinical character of fungal urinary tract infection,we clarified the mechanism of the disease.The principal aspect was spleen-kidney vacuity detriment and the secondary incidental was accumulated damp-heat and static blood in the lower burner,viz weaken healthy qi and excessive pathogenic factor.Hence during the clinical treatment we should regulate faculty condition.In the acute infection period we should give priority to dispel evils supplemented by the recovery of right qi.In the convalescence we should pay more attention to support right supplemented by dispelling.RESULTS The most common pathogen of fungal urinary tract infection was Candida albicans.The TCM stepwise treatments of fungal urinary tract infection together with regulatiy entire faculty condition had the characteristics of high efficacy and few side effects.CONCLUSIONS The TCM stepwise treatments of fungal urinary tract infection has more potentiality which deserves further study.

Betaine supplementation has been shown to alleviate altered glucose and lipid metabolism in mice fed a high-fat diet or a high-sucrose diet. We investigated the beneficial effects of betaine in diabetic db/db mice. Alleviation of endoplasmic reticulum (ER) and oxidative stress was also examined in the livers and brains of db/db mice fed a betaine-supplemented diet. Male C57BL/KsJ-db/db mice were fed with or without 1% betaine for 5 wk (referred to as the db/db-betaine group and the db/db group, respectively). Lean non-diabetic db/+ mice were used as the control group. Betaine supplementation significantly alleviated hyperinsulinemia in db/db mice. Betaine reduced hepatic expression of peroxisome proliferator-activated receptor gamma coactivator 1 alpha, a major transcription factor involved in gluconeogenesis. Lower serum triglyceride concentrations were also observed in the db/db-betaine group compared to the db/db group. Betaine supplementation induced hepatic peroxisome proliferator-activated receptor alpha and carnitine palmitoyltransferase 1a mRNA levels, and reduced acetyl-CoA carboxylase activity. Mice fed a betaine-supplemented diet had increased total glutathione concentrations and catalase activity, and reduced lipid peroxidation levels in the liver. Furthermore, betaine also reduced ER stress in liver and brain. c-Jun N-terminal kinase activity and tau hyperphosphorylation levels were lower in db/db mice fed a betaine-supplemented diet, compared to db/db mice. Our findings suggest that betaine improves hyperlipidemia and tau hyperphosphorylation in db/db mice with insulin resistance by alleviating ER and oxidative stress.
Acetyl-CoA Carboxylase ; Animals ; Betaine ; Brain ; Carnitine O-Palmitoyltransferase ; Catalase ; Diet ; Diet, High-Fat ; Endoplasmic Reticulum ; Gluconeogenesis ; Glucose ; Glutathione ; Humans ; Hyperinsulinism ; Hyperlipidemias ; Insulin Resistance ; JNK Mitogen-Activated Protein Kinases ; Lipid Metabolism ; Lipid Peroxidation ; Liver ; Male ; Mice ; Oxidative Stress ; PPAR alpha ; PPAR gamma ; RNA, Messenger ; Transcription Factors

Objective: Undifferentiated and dedifferentiated endometrial carcinoma is a rare type of uterine malignancy. This study assesses disease characteristics, treatment and survival outcomes in patients with undifferentiated and dedifferentiated endometrial carcinoma treated at BC Cancer. Methods: All patients diagnosed with undifferentiated and dedifferentiated endometrial carcinoma between 2000 and 2019 at BC Cancer were reviewed centrally. Clinical, pathologic, treatment and outcomes were reviewed retrospectively. The Kaplan-Meier method was used to evaluate overall survival (OS) and disease-free survival (DFS). Multivariable analysis was performed using Cox regression analysis. Results: Fifty-two patients were included, 33% had undifferentiated carcinoma and 67% dedifferentiated carcinoma. Sixty-nine percent of those who had mismatch repair (MMR) testing of their tumor had an abnormal profile. The 5-year DFS was 80% (95% confidence interval [CI]=71%–89%) for stage I/II, 29% (95% CI=28%–40%) for stage III and 10% (95% CI 1%–19%) for stage IV. The 5-year OS was 84% (95% CI=75%–92%) for stage I/II, 38% (95% CI=26%–50%) for stage III and 12% (95% CI=1%–24%) for stage IV. Multivariate analysis showed that receiving adjuvant chemotherapy, adjuvant radiotherapy, lower stage and better Eastern Cooperative Group performance status were associated with improved DFS (p<0.05). Conclusion Patients with stage I/II undifferentiated and dedifferentiated endometrial carcinoma had excellent survival outcomes, those with stage III/IV had worse outcomes, similar to previously reported. Adjuvant chemotherapy and radiotherapy were associated with improved DFS. MMR testing should be performed for these patients due to the high incidence of abnormal profiles.

Adequate vitamin D status is essential for bone health. New randomized controlled trials investigating the effect of vitamin D supplementation on bone health have recently been published. This position statement updates and expands on the previous 2015 position statement of the Korean Society for Bone and Mineral Research on the adequate vitamin D status for healthy older adults (age ≥ 70 years) and those at high risk of osteoporosis and fracture (adults on osteoporosis medications) to maintain serum 25-hydroxy-vitamin D (25[OH]D) levels ≥ 20 ng/mL but < 50 ng/mL. A serum 25(OH)D level of 30 ng/mL may be beneficial for those on anti-resorptives. Vitamin D can be obtained from ultraviolet light exposure and diet. To reach the target vitamin D status through intake, adults must consume at least 400 IU/day to reach 20 ng/mL and 800 to 1,000 IU/day to reach 30 ng/mL. Foods familiar to the Korean diet that are high in vitamin D content or consumed frequently enough to positively impact vitamin D status are introduced in addition to the amount required to help reach one’s target vitamin D status.

BACKGROUND/OBJECTIVES: Oxidative stress is caused by an imbalance between harmful free radicals and antioxidants. Long-term oxidative stress can lead to an “exhausted” status of antioxidant defense system triggering development of metabolic syndrome and chronic inflammation. Green perilla (Perilla frutescens) is commonly used in Asian cuisines and traditional medicine in southeast Asia. Green perilla possesses numerous beneficial effects including anti-inflammatory and antioxidant functions. To investigate the potentials of green perilla leaf extract (PE) on oxidative stress, we induced oxidative stress by high-fat diet (HFD) in aging mice.MATERIALS/METHODS: C57BL/6J male mice were fed HFD continuously for 53 weeks.Then, mice were divided into three groups for 12 weeks: a normal diet fed reference group (NDcon), high-fat diet fed group (HDcon), and high-fat diet PE treated group (HDPE, 400 mg/kg of body weight). Biochemical analyses of serum and liver tissues were performed to assess metabolic and inflammatory damage and oxidative status. Hepatic gene expression of oxidative stress and inflammation related enzymes were evaluated by quantitative real-time polymerase chain reaction (qRT-PCR). RESULTS: PE improved hepatopathology. PE also improved the lipid profiles and antioxidant enzymes, including hepatic glutathione peroxidase (GPx) and superoxide dismutase (SOD) and catalase (CAT) in serum and liver. Hepatic gene expressions of antioxidant and antiinflammatory related enzymes, such as SOD-1, CAT, interleukin 4 (IL-4) and nuclear factor erythroid 2-related factor (Nrf2) were significantly enhanced by PE. PE also reduced the levels of hydrogen peroxide (H 2 O 2 ) and malondialdehyde (MDA) in the serum and liver;moreover, PE suppressed hepatic gene expression involved in pro-inflammatory response;Cyclooxygenase-2 (COX-2), nitric oxide synthase (NOS), interleukin 1 beta (IL-1β), and interleukin 6 (IL-6). CONCLUSIONS This research opens opportunities for further investigations of PE as a functional food and possible anti-aging agent due to its attenuative effects against oxidative stress, resulting from HFD and aging in the future.

PURPOSE: The purpose of this study is to clarify the relevance of breastfeeding and its preventive effect on maternal hypertension as well as to evaluate the theoretical mechanism behind of it through systematic evaluation of existing articles. METHODS: For systematic evaluation of literatures in recent 5 years, 5 most suitable articles were selected with the key words, (breastfeeding or breastfeed or lactation) AND (hypertension or high blood pressure or hypertensive disorders) from PubMed, EMBASE, and Cochran Library, and carefully reviewed by 2 researchers. RESULTS: Breastfeeding women have less frequently developed hypertension in their later life. Depending on the duration of breastfeeding, compared to nonbreastfeeding women, breastfeeding women's odds ratio for developing hypertension are 0.87 (95% confidence interval [CI], 0.76–0.99), 0.83 (95% CI, 0.68–1.00), and 0.79 (95% CI, 0.65–0.97) each for 0–6 months, 6–12 months, and greater than 12 months of breastfeeding. As the number of breastfeeding children increases, the incidence of maternal hypertension decreases. In addition, both partial and exclusive breastfeeding lower the risk of developing maternal hypertension. Though the mechanism of prophylactic effect of breastfeeding on hypertension is not conclusive, reset hypothesis, oxytocin release, the increase of ghrelin and protein peptide YY, as well as epigenetic programming are considered to be relevant to the etiology of the condition. CONCLUSION: Breastfeeding prevents maternal hypertension later in life. Studies show dose-response relationship of breastfeeding as the duration matters. In addition, both partial and exclusive breastfeeding have preventive effect on maternal hypertension. Numerous mechanisms are continuously being reported and further studies are needed for clarification.
Breast Feeding ; Child ; Epigenomics ; Female ; Ghrelin ; Humans ; Hypertension ; Incidence ; Odds Ratio ; Oxytocin ; Peptide YY

Purpose: We examined United States medical students’ self-reported feedback encounters during clerkship training to better understand in situ feedback practices. Specifically, we asked: Who do students receive feedback from, about what, when, where, and how do they use it? We explored whether curricular expectations for preceptors’ written commentary aligned with feedback as it occurs naturalistically in the workplace. Methods: This study occurred from July 2021 to February 2022 at Southern Illinois University School of Medicine. We used qualitative survey-based experience sampling to gather students’ accounts of their feedback encounters in 8 core specialties. We analyzed the who, what, when, where, and why of 267 feedback encounters reported by 11 clerkship students over 30 weeks. Code frequencies were mapped qualitatively to explore patterns in feedback encounters. Results: Clerkship feedback occurs in patterns apparently related to the nature of clinical work in each specialty. These patterns may be attributable to each specialty’s “social learning ecosystem”—the distinctive learning environment shaped by the social and material aspects of a given specialty’s work, which determine who preceptors are, what students do with preceptors, and what skills or attributes matter enough to preceptors to comment on. Conclusion Comprehensive, standardized expectations for written feedback across specialties conflict with the reality of workplace-based learning. Preceptors may be better able—and more motivated—to document student performance that occurs as a natural part of everyday work. Nurturing social learning ecosystems could facilitate workplace-based learning such that, across specialties, students acquire a comprehensive clinical skillset appropriate for graduation.