• Title/Summary/Keyword: Retinopathy

Search Result 148, Processing Time 0.025 seconds

Pharmacokinetic Changes of Gentamycin After Intravenous Administration to Rabbits with Alloxan-Induced Diabetes Mellitus (알록산으로 유도된 당뇨병 토끼에서 겐타마이신의 약물동태 변화)

  • Kang, T.S.;Choi, J.S.;Lee, J.H.
    • YAKHAK HOEJI
    • /
    • v.44 no.6
    • /
    • pp.539-544
    • /
    • 2000
  • Many diabetic patients develop serious complications during the course of the disease, including cardiovascalar disorders, nepropathy, neuropathy and retinopathy. Because some physiological changes occurring in diabetes mellitus patients could alter the pharmacokinetics of drugs used to treat the disease, the pharmacokinetics of gentamycin was investigated after intravenous administration (2 mg/kg) to control rabbits and acute or chronic alloxan-induced diabetes mellitus rabbits (AIDRs). After intravenous administration, the serum concentrations of gentamycin were significantly higher between 6 and 12 hr in chronic AIDRs compared with those in control rabbits. The AUC was significant greater in chronic ($31.91\;{\pm}\;3.76\;{\mu}g/ml{\cdot}hr$) AIDRs than that in control ($21.60\;{\pm}\;2.45\;{\mu}g/ml{\cdot}hr$) rabbits. Total body clearance (CLt) in AIDRs were significantly decreased compared with that in control rabbits. Cumulative urinary excretion of gentamycin was decreased, although not significantly, in AIDRs compared with that in control rabbits.

  • PDF

Automatic Control of Fraction of Inspired Oxygen in Neonatal Oxygen Therapy using Fuzzy Logic Control

  • Chanyagorn, Pornchai;Kiratiwudhikul, Phattaradanai
    • IEIE Transactions on Smart Processing and Computing
    • /
    • v.5 no.2
    • /
    • pp.107-116
    • /
    • 2016
  • Premature babies of less than 37 weeks gestation might require oxygen therapy as an integral part of treatment and respiratory support. Because of their under-developed lungs, these so-called "preemies" might contract respiratory distress syndrome (RDS). To treat RDS, neonatal oxygen therapy is administered, where controlled oxygen gas is measured as a fraction of inspired oxygen ($FiO_2$). However, exposure to high oxygen content during long treatment could cause oxygen intoxication, which might cause permanent blindness due to retinopathy of prematurity (ROP), whereas insufficient oxygen exposure could cause severe hypoxia. A doctor would use oxygen saturation ($SpO_2$) data and prescribe a dose of $FiO_2$ to maintain $SpO_2$ within a suitable range. One objective is to maintain $SpO_2$ within the acceptable range using $FiO_2$ that is as low as possible. Adjustment of $FiO_2$ would normally be done by nurses every 15 to 30 minutes, which might not be safe in many situations. An error in $FiO_2$ adjustment during a manual procedure could be as large as +/- 2.5%. This paper presents a system that can determine an $FiO_2$ value suitable to the current $SpO_2$ and that automatically adjusts $FiO_2$ with an error clearance of +/- 0.25%.

An update on necrotizing enterocolitis: pathogenesis and preventive strategies

  • Lee, Jang-Hoon
    • Clinical and Experimental Pediatrics
    • /
    • v.54 no.9
    • /
    • pp.368-372
    • /
    • 2011
  • Necrotizing enterocolitis (NEC) is one of the most critical morbidities in preterm infants. The incidence of NEC is 7% in very-low-birthweight infants, and its mortality is 15 to 30%. Infants who survive NEC have various complications, such as nosocomial infection, malnutrition, growth failure, bronchopulmonary dysplasia, retinopathy of prematurity, and neurodevelopmental delays. The most important etiology in the pathogenesis of NEC is structural and immunological intestinal immaturity. In preterm infants with immature gastrointestinal tracts, development of NEC may be associated with a variety of factors, such as colonization with pathogenic bacteria, secondary ischemia, genetic polymorphisms conferring NEC susceptibility, anemia with red blood cell transfusion, and sensitization to cow milk proteins. To date, a variety of preventive strategies has been accepted or attempted in clinical practice with regard to the pathogenesis of NEC. These strategies include the use of breast feeding, various feeding strategies, probiotics, prebiotics, glutamine and arginine, and lactoferrin. There is substantial evidence for the efficacy of breast feeding and the use of probiotics in infants with birth weights above 1,000 g, and these strategies are commonly used in clinical practice. Other preventive strategies, however, require further research to establish their effect on NEC.

Gold Nanoparticles Inhibit AGEs Induced Migration and Invasion in Bovine Retinal Endothelial Cells (소망막내피세포에서 금 나노입자의 최종당화산물에 의한 세포 이동 및 침윤성 억제 효과)

  • Chae, Soo-Chul
    • Korean Journal of Environmental Biology
    • /
    • v.28 no.1
    • /
    • pp.8-13
    • /
    • 2010
  • This study aimed the role of gold nanoparticles (AuNP) in advanced glycation end-products (AGEs) induced migration and invasion in bovine retinal endothelial cells (BRECs). BRECs were isolated from the retina. Cell viability was confirmed by the MTT assay. In vitro wound migration assay was performed to investigate the migration of BRECs. In vitro tube formation was measured by on-gel system. Apoptosis induced by AuNP was confirmed by caspase-3 assay. AGE-bovine serum albumin (BSA) demonstrated increase of cell migration and proliferation in BRECs. In addition, AuNP regardless of the existence of AGE-BSA suppressed proliferation, migration, and angiogenesis. AuNP suppressed AGE-BSA induced migration and invasion, and induced apoptosis through caspase-3. As a results, AuNP have a potential anti-angiogenic effect for AGE-induced angiogenesis in vitro and offer possibility for the treatment of diabetic retinopathy.

A Case of Congenital Toxoplasmosis with Chorioretinitis Diagnosed by an Examination for Retinopathy of Prematurity (미숙아 망막증 검사 중 맥락망막염으로 진단된 선천성 톡소포자충증 1례)

  • Cho, Kyoung Soon;Kim, Sang Eun;Kim, Jong-Hyun;Oh, Jin Hee;Koh, Dae Kyun
    • Pediatric Infection and Vaccine
    • /
    • v.13 no.2
    • /
    • pp.196-200
    • /
    • 2006
  • Congenital toxoplasmosis is caused by vertical transmission of Toxoplasma gondii from mother during pregnancy. The broad clinical spectrum of congenital toxoplasmosis ranges from stillbirth or death shortly after birth to survival with either cerebral damage or mild or subclinical disease, consisting usually of ocular involvement. The authors experienced a case of congenital toxoplasmosis in prematurity baby whose mother had lived recently in Africa. The diagnosis of congenital toxoplasmosis was confirmed on the basis of clinical finding of chorioretinitis and positive serologic test for toxoplasma IgM antibody.

  • PDF

Effect of Byakangelicin from Angelica dahurica and its Semi-synthetic Derivatives on Aldose Reductase, Galactosemic Cataracts, the Polyol Contents and $Na^{+}$, $K^{+}$-ATPase activity in Sciatic Nerves of Streptozotocin-induced Diabetic Rats.

  • Lim, Soon-Sung;Jung, Sang-Hoon;Shin, Kuk-Hyun
    • Proceedings of the Korean Society of Applied Pharmacology
    • /
    • 1998.11a
    • /
    • pp.184-184
    • /
    • 1998
  • Aldose reductase(AR), a rate-limiting enzyme in the polyol pathway, has been demonstrated to cause the intracellular accumulation of sorbitol or galactitol and hence to play key roles not only in the cataract formation in the lens but also in the pathogenesis of diabetic complications such as neuropathy, retinopathy and nephropathy, etc. In a series of investigations to evaluate potential AR inhibitors from medicinal plants, we have shown that some hot water extracts exhibited a significant inhibition of a significant inhibition of bovine lens AR in vitro. Among active plants, the roots of Angelica dahuria (Umbelliferae) were shown to have relatively potent AR inhibitory activity. Systematic fractionation of the ether soluble fraction monitored by bioassay led to isolation of two furanocoumarins, byakangelicin(I) and ter-O-methyl byakangelicin( II), were identified as potential AR inhibitors, their $IC_{50}$ values being 6.2 M and 2.8 M, respectively.

  • PDF

A Case Study of One Patient Who Has Diabetic Gangrene in Foot and Finger Due to Diabetes (당뇨로 인한 우측(右側 ) 족저부(足底部) 및 좌수지(左手指) 궤양(潰瘍)을 동반한 환자 치험 1 예)

  • Lee, Sang-Gi;Lee, Kyung-Lo;Song, Jeong-Mo
    • Journal of Sasang Constitutional Medicine
    • /
    • v.16 no.3
    • /
    • pp.129-132
    • /
    • 2004
  • 1. Objectives Besides Diabetes Mellitus, its complications are matter of concerns as well. Its following complications are cardiovascular disease, glomerulopathy, retinopathy, neuropathy and diabetic gangrene. These complications can cause overall damage in major organs. In traditional oriental medicine it has been perceived that gangrene is mainly caused by "hwa(火)" but under sasang constitutional medicine its has been diagnosed as Taeumin superficial-disease(太陰人 表病) and Taeumin Jowiseungchung-tang(調胃升淸湯) was prescribed. As a result, significal improvments was noted and thefore we report the outcome. 2. Methods We have given Taeumin Jowiseungchung-tang(太陰人 調胃升淸湯) to a patient for treating diabetes complications. 3. Results This patient was treated with Sasang Constitional Medicine and acupuncture for about three weeks. After treatment, ulcer and whole body edema were improved considerbly. 4. Conclusions We have dianosed the patient as Taeumin superficial-disease(太陰人 表病) by undergoing several diagnostic method used in sasang constutional medicine. Therefore we have given Taeumin Jowiseungchung-tang(太陰人 調胃升淸湯) to the patient and has obtained satisfactory results in curing several diabetic complications especially ulcer due to diabetes.

  • PDF

Factors Associated with Senile Macular Degeneration in Elders within Communities (지역사회거주 노인의 황반변성 관련 요인)

  • Kim, Chul-Gyu;Park, Yungeong;Park, Seungmi
    • Research in Community and Public Health Nursing
    • /
    • v.24 no.1
    • /
    • pp.1-10
    • /
    • 2013
  • Purpose: This study was conducted to examine the degree of senile macular degeneration in elders aged 65 or older and identify factors associated with senile macular degeneration in elders within communities. Methods: Participants in this cross-sectional descriptive study were 388 elders without cataract, glaucoma, and diabetic retinopathy. Data were collected through face to face interviews using a questionnaire in an urban area from June 2010 to December 2011. To detect senile macular degeneration, the participants' self-tests were carried out with Amsler grid testing. Stepwise multivariate logistic regression was performed to evaluate the effects of health behavior and knowledge about eye health on senile macular degeneration. Results: The proportion of participants with senile macular degeneration was 11.6%. Factors that significantly increased the risk of senile macular degeneration included eye discomfort and history of ophthalmic examination (p<.05). Factors that significantly decreased the risk of senile macular degeneration included regular change of magnifiers, non-use of magnifiers, and knowledge about preventive effects of non-smoking and antioxidant vitamin intake on senile macular degeneration (p<.05). Conclusion: This study showed that programs for preventing senile macular degeneration were necessary for elders within communities and the results of this study can be used for developing those programs.

Clinical Observation on Hearing Impairment in Diabetes Mellitus Patients (당뇨병 환자의 청각장애에 대한 관찰)

  • 지정민;송재권
    • Proceedings of the KOR-BRONCHOESO Conference
    • /
    • 1977.06a
    • /
    • pp.3.3-3
    • /
    • 1977
  • For a year from Jan. 1976 to Dec. 1976, the authors have performed the clinical observation in accordance with audiometric test and clinical findings of 43 cases (male 25: female 18) who were diagnosed of diabetes mellitus in diabetic clinic of our hospital. The results are as follows; 1) Eight of 43 cases reveal hearing impairment, and almostly abrupt drop or descending in hearing types. 2) The incidence of hearing impairment is higher in middle and older age group. 3) Hearing impairment has not related to duration of the disease but blood sugar level and total serum cholesterol level in some extent. 4) The incidence of hearing impairment is higher in cases accompanied by complications such as retinopathy, hypertension, neuropathy etc. 5) In etiology of hearing impairment, multiple factors seem to be concerned.

  • PDF

Studies on Angiogenesis Inhibition Activity of Traditional Herb Extract (한약재의 신생혈관생성 억제 활성에 관한 연구)

  • Jeon, Won-Kyung;Lee, Tae-Hee;Yoon, Yoo-Sik;Kim, Yeon-Ok;Sung, Hyun-Jea
    • Korean Journal of Oriental Medicine
    • /
    • v.4 no.1 s.4
    • /
    • pp.129-138
    • /
    • 1998
  • Angiogenesis, the formation of new blood vessels, is considered to be involved in many pathological symptoms such as diabetic retinopathy, arthritis, inflammation and solid tumour. In particular, it is thought that angiogenesis is critical for development and growth of solid tumour. Recent study shows that there is a highly significant association of microvessel density with overall survival and relapse-free survival in patients with breast tumour In this study, the inhibition effect of angiogenesis of traditional herbs used for the treatment of cancer was examined. It was found out that the extract of Agaricus blazei by boiling water is a possible inhibitor of angiogenesis. It inhibited normal developmental angiogenesis In the chorioallantoic membrane of chick embryos and also inhibited capillary-like tube formation by endotherial cells on matrigel in vitro. These results suggest that Agaricus blazei can be a potent angiogenesis inhibitor.

  • PDF