• Title/Summary/Keyword: Atrophy of lung

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Acute Toxicity Test of KH-502 (Flupyrazofos) in Rats and Mice (KH-502의 랫트 및 마우스를 이용한 급성독성시험)

  • 송시환;김형진;신천철;임광현;하창수;한상섭
    • Toxicological Research
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    • v.14 no.2
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    • pp.227-235
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    • 1998
  • KH-502 (Flupyrazofos), a new organophosphorus insecticide synthesized by Korea Re-search Institute of Chemical Technology, was found to be effective against diamond-back moth(Plutella xylostella). This study was carried out to determine the acute toxicity of KH-502 in Sprague-Dawley rats and ICR mice. The test article was orally or dermally administered to the animals. Death, tremors, salivation, lacrimation, abnormal gait and corneal opacity were observed. Decrease in body weight gain was observed in all treatment groups. At necropsy, dark red coloration of lung, enlargement of adrenal glands and atrophy of spleen were observed. The oral $LD_{50}$ value was 372 mg/kg in male rats, 605 mg/kg in female rats, 186 mg/kg in male mice, and 115 mg/kg in female mice. And the dermal $LD_{50}$ was 4086 mg/kg in male and 3881 mg/kg in female rats.

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A Case of Eventration of the Diaphragm (횡경막성 내장탈출증: 1례 보고)

  • 박광훈;최인환
    • Journal of Chest Surgery
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    • v.6 no.2
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    • pp.243-248
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    • 1973
  • Eventration of the diaphragm is, by definition, abnormally high or elevated position of diaphragm as a result of paralysis, aplasia or atrophy of varing degrees of muscle fibers, and the cause of which may be congenital or acquired. The unbroken continuity of the diaphragm differentiates it from diaphragmatic hernia. The clinical manifestations of the condition, if present, are usually due to the interference of the ventilatory function of the lung and digesive dysfunction due to gastrointestinal distorsion. Treatment consists of surgical repair of the relaxed diaphragm to it`s normal position. A ease of left sided eventuration of the diaphragm, 31 year old officer, was found by chance after traffic accident with chief complaints of hemoptysis and multiple superficial contusions. Routine chest roentgenogram and barium study of the colon revealed moderately elevated left hemidiaphragm with displacement of the splenic flexure of the colon into the left chest. Past history revealed frequent attack of upper respiratory infection and some abnormal condition on his left chest announced by screen cheek of chest X-ray at the time of entrance for his army service 3 years before. Plication of the relaxed diaphragm through left thoracotomy was done and result was excellent as seen on Fig. 5. Cause of eventration of the left hemidiaphragm was due to paralysis of the left phrenic nerve which was tested during thoracotomy.

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Disseminated Postnatal Cytomegalovirus Infection in a Preterm Neonate: Autopsy Case Report

  • Kim, Ka-Young;Kim, Ee-Kyung;Park, Sung-Hye;Kim, Yoo Jinie;Shin, Seung-Han;Kim, Han-Suk
    • Neonatal Medicine
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    • v.28 no.2
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    • pp.83-88
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    • 2021
  • Treatment guidelines for postnatal cytomegalovirus (pCMV) infection in preterm have not been established yet. Neutropenia, thrombocytopenia, hepatitis, colitis, and sepsis-like disease are among the clinical manifestations, which range from moderate to serious. We present a case of autopsy diagnosed as pCMV infection in a premature infant delivered at gestational age of 24 weeks and 5 days. On the 7th and 14th days of birth, urinary CMV polymerase chain reaction samples were negative, ruling out congenital CMV infection. However, autopsy examination revealed that the patient had disseminated pCMV infection. CMV inclusion bodies were found in the majority of tissues, including the lung, liver, pancreas, breast, kidney, and adrenal gland, but not the placenta. The thymus exhibited significant cortical atrophy and T-cell immunodeficiency, possibly induced by dexamethasone treatment for bronchopulmonary dysplasia or by pCMV infection itself. If dexamethasone treatment is extended or high doses are considered, it may be beneficial to test the CMV infection status to prevent aggravation of infection. This case demonstrates that, despite the low prevalence, pCMV infection should be considered a differential diagnosis in preterm if other conditions or etiology cannot justify clinical deterioration.

The impact of cancer cachexia on gut microbiota composition and short-chain fatty acid metabolism in a murine model

  • Seung Min Jeong;Eun-Ju Jin;Shibo Wei;Ju-Hyeon Bae;Yosep Ji;Yunju Jo;Jee-Heon Jeong;Se Jin Im;Dongryeol Ryu
    • BMB Reports
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    • v.56 no.7
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    • pp.404-409
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    • 2023
  • This study investigates the relationship between cancer cachexia and the gut microbiota, focusing on the influence of cancer on microbial composition. Lewis lung cancer cell allografts were used to induce cachexia in mice, and body and muscle weight changes were monitored. Fecal samples were collected for targeted metabolomic analysis for short chain fatty acids and microbiome analysis. The cachexia group exhibited lower alpha diversity and distinct beta diversity in gut microbiota, compared to the control group. Differential abundance analysis revealed higher Bifidobacterium and Romboutsia, but lower Streptococcus abundance in the cachexia group. Additionally, lower proportions of acetate and butyrate were observed in the cachexia group. The study observed that the impact of cancer cachexia on gut microbiota and their generated metabolites was significant, indicating a host-to-gut microbiota axis.

A Case-Study of Taeeumin Patient with Atypical Parkinsonian Disorders Having Dizziness and Gait Disturbance (비정형파킨슨증후군 태음인의 어지럼증과 보행장애 치험례)

  • Park, Jieun;Kim, Kukhwa;Lee, Seul;Lee, Yong-jae;Lee, Jeongyun
    • Journal of Sasang Constitutional Medicine
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    • v.34 no.3
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    • pp.69-80
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    • 2022
  • A 52-year-old female diagnosed with Atypical Parkinsonian Disorders (APD) about one year ago suffered from dizziness and gait disturbance. The patient was identified as Taeeumin esophagus-cold lung-dry symptomatology pattern and was treated with Jowisengcheong-tang. The patient's symptoms of dizziness and night sweats were assessed using Global Assessment Scale (GAS). And, the Unified Multiple System Atrophy Rating Scale (UMSARS) and the Unified Parkinson's Disease Rating Scale (MDS-UPDRS) were used to assess the overall function of the patient. The patient's symptoms of dizziness and night sweats were significantly improved, and UMSARS and MDS-UPDRS scores were decreased. This case showed that Sasang constitutional medicine treatment can improve APD symptoms and improve the quality of life of the patient.

Pathological and immunohistochemical studies in Syrian hamsters experimentally infected with encephalomyocarditis virus isolated in Korea (국내 분리 encephalomyocarditis virus의 실험적 감염 Syrian hamster에 대한 병리학적 및 면역조직화학적 연구)

  • Yoon, Won-kee;Cho, Sung-whan
    • Korean Journal of Veterinary Research
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    • v.34 no.2
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    • pp.349-359
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    • 1994
  • To elucidate pathogenicity to hamster of encephalomyocarditis virus $K_3$ strain that was isolated in Korea from the swine with reproductive failures, adult male syrian hamsters were experimentally infected intraperitoneally with the virus at $10^{7.0}\;TCID_{50}/0.1ml$ and pathological and immunohistochemical studies were performed. The results obtained through the experiment were as follows. 1. Clinical signs such as depression, unkempt hair and bilateral parlysis of hind limbs were observed. 2. At necropsy, mild congestion was observed in the cerebrum, liver, kidney and lung, and atrophy was evident in testis. 3. In microscopic observation, degeneration and necrosis of the nervous cells and perivascular mononuclear cell infiltration were manifested in central nerve system, and various degrees of degeneration and necrosis of parenchymal cells were detected in pancreas, lacrimal gland, liver, kidney and testis. 4. In immunohistochemical observation, strong positive reactions were observed in degenerated parenchymal cell of testis, and weak positive reactions, in hepatocytes.

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Current Evidence for a Paradigm Shift in Gastric Cancer Prevention From Endoscopic Screening to Helicobacter pylori Eradication in Korea

  • Kim, Young-Il;Choi, Il Ju
    • Journal of Gastric Cancer
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    • v.22 no.3
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    • pp.169-183
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    • 2022
  • Gastric cancer is prevalent in Korea and ranked as the third most common cancer in 2019, followed by lung and thyroid cancers. The National Cancer Screening Program (NCSP) for gastric cancer has been implemented in adults aged ≥ 40 since 1999 and involves endoscopic screening every 2 years. The beneficial effects of the current NCSP on early cancer detection, cost-effectiveness, and mortality reduction are evident. However, the screening program results in a large socioeconomic burden and the consumption of medical resources, as it focuses solely on secondary prevention (early detection) rather than primary prevention of cancer. Helicobacter pylori is defined as a group I carcinogen by the International Agency for Research on Cancer. Hence, its eradication has been suggested as an important primary gastric cancer prevention strategy. Well-designed randomized controlled trials involving high-risk groups (post-endoscopic resection of early gastric cancer and family history of gastric cancer) and long-term follow-up studies in the general population have provided high-quality evidence regarding the effects of H. pylori eradication on gastric cancer prevention. In this review, we discussed the evidences for a possible modification of the current gastric cancer secondary prevention strategy by introducing primary prevention through H. pylori eradication. Areas for future research to optimize primary prevention strategies were also suggested.

5-Day Repeated Intravenous Dose Toxicity Study of a New Camptothecin Anticancer Agent CKD-602 in Rats

  • Kim, Jong-Choon;Shin, Dong-Ho;Kim, Sung-Ho;Bae, Chun-Sik;Kim, Joon-Kyum;Cha, Shin-Woo;Han, Jung-Hee;Lee, Hyun-Sook;Chung, Moon-Koo
    • Toxicological Research
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    • v.20 no.1
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    • pp.83-88
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    • 2004
  • The present study was carried out to investigate the potential adverse effects of CKD-602 by a 5-day repeated intravenous dose in Sprague-Dawley rats. The test article, CKD-602, was administered intravenously to male and female rats at dose levels of 0.07, 0.22, 0.67, 2.0 and 6.0 mg/kg/day for 5 days consecutively. Mortalities, clinical findings, and body weight changes were monitored for the 14-day period after cessation of the administration. At the end of 14-day observation period, all animals were sacrificed and complete gross postmortem examinations were performed. There were 2 and 5 treatment related deaths in the 0.67 and 2.0 mg/kg/day dose groups of both genders, respectively. Treatment related clinical signs, including hair loss, skin paleness, decreased locomotor activity, emaciation, and changes in stool were observed in a dose-dependent manner from the third day after initiation of the injection. Decrease or suppression of body weight was also observed dose-dependently in males and females of the treated groups. Gross postmortem examinations revealed a dose-dependent increase in the incidence and severity of atrophy or hypertrophy and white membrane formation in the spleen, atrophy of the thymus, diffuse white spots and paleness of the liver, paleness of the lung, kidney and adrenal gland, and dark red discoloration and dark red contents in the alimentary tract. Based on these results, it was concluded that the 5-repeated intravenous injection of CKD-602 to male and female rats resulted in increased incidence of abnormal clinical signs and death, decreased or suppressed body weight, and increased incidence of abnormal gross findings. In the present experimental conditions, the $LD_{50}$ value was 2.07 (95% confidence limit not specified) mg/kg/day in both genders and the $LD_{10}$ value was 1.72 (95% confidence limit not specified) mg/kg/day in both genders.

Three-Phase Bone Scintigraphy in Reflex Sympathetic Dystrophy Syndrome of the Hand (반사성 교감신경계 기능장애 증후군(RSDS)의 손 3상 골스캔 소견)

  • Ahn, Myeong-Im;Park, Jeong-Mi;Park, Young-Ha;Kim, Sung-Hoon;Chung, Soo-Kyo;Shinn, Kyung-Sub;Bahk, Yong-Whee
    • The Korean Journal of Nuclear Medicine
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    • v.25 no.1
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    • pp.81-86
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    • 1991
  • Reflex sympathetic dystrophy syndrome (RSDS), known also as Sudeck's atrophy, is an uncommon disorder recognized by its distinctive symptom complex consisting of pain and tenderness, vasomotor instability, swelling, and dystrophic skin changes and radiologic changes. The present study has been carried out to prospectively establish scintigraphic diagnostic criteria for RSDS using three-phase radionuclide bone scintigraphy (TPBS). In addition, the usefulness in the evaluation of treatment of RSDS was assessed. Patients included were 6 men and 7 women with the age ranging from 25 to 63 years (average 47 years). Diagnosis was based on typical clinical symptoms and signs as described above. Associated clinical conditions in these patients were cerebral infarction (4 patients), lung cancer (2 patients), trauma (1 patient), lymphoma (1 patient), and unknown cause (5 patients). All patients showed diffuse radionuclide accumulation in juxtaarticular region on the delayed static image and 11 patients showed diffusely increased activities also on scintiangiogram and blood-pool image. Fillow-up TPBS after corticosteroid therapy in 4 patients revealed near normal return of abnormal radionuclide accumulations in the affected hand. TPBS is an useful test for the diagnosis of as well as the evaluation of the therapeutic effects of RSDS.

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Laryngeal Inhalation Injury (흡인성 화상에 의한 후두 손상)

  • 조정일;김영모;임정혁;김용재;이철우;이명택
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.12 no.1
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    • pp.11-16
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    • 2001
  • Background and Objectives : A burn injury to the glottis differs from a burn injury to the trachea, bronchi, and lung parenchyma, in that thermal injury does not occur to any significant degree below the level of the larynx, due to the effective cooling of air by the upper airway and to reflex closure of the vocal cords from a blast of hot air. Therefore, the laryngeal inhalation injury give rise to airway problem and voice change. The objectives of this study is to assess management of laryngeal inhalation injury and voice change after management. Materials and Methods : Voice choses and laryngeal injuries of eight laryngeal inhalation patients were analyzed through questionnaire, voice dynamic laboratory, and laryngeal stroboscopy. Operative management was performed to five patients for airway patiency and vocal cord movement on laryngeal pathology ind voice therapy was performed to all patients. One-year after, voice changes and laryngeal injuries were reanalyzed with same methods. Results : Vocal breathiness, decreased voice intensity, reduced voice range, and easy fatigability were major complaints of laryngeal inhalation patients. Glottic stenosis were developed to five of eight patients, and vocal cord atrophy, bowing were developed to others. Vocal cord mucosal waves were significantly decreased in all patients. Jitter(%), Shimmer(dB) were increased and Maximal phonation time(MPT) was decreased. One-year after, subjective voice changes and objective voice parameters were improved. And vocal cord mucosal waves were recovered in all patients. Conclusions : Subjective voice quality and objective voice parameters were improved after operative management for laryngeal pathology and voice therapy. And we observed recovery of vocal fold mucosal waves by laryngeal stroboscopy. We think that early preventable tracheotomy is necessary to reduce the laryngeal contact injury in laryngeal inhalation patients.

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