Biochemical and Histopathological Evaluation of the Radioprotective Effects of Melatonin Against Gamma Ray-Induced Skin Damage

2019 ◽  
Vol 12 (1) ◽  
pp. 72-81 ◽  
Author(s):  
Dheyauldeen Shabeeb ◽  
Masoud Najafi ◽  
Ahmed Eleojo Musa ◽  
Mansoor Keshavarz ◽  
Alireza Shirazi ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Histopathological Examination ◽  
Radical Scavenging ◽  
Limiting Factor ◽  
Skin Damage ◽  
Exposed Skin ◽  
Male Wistar Rats ◽  
Time Periods ◽  
Skin Damages ◽  
The Right

Background:Radiotherapy is one of the treatment methods for cancers using ionizing radiations. About 70% of cancer patients undergo radiotherapy. Radiation effect on the skin is one of the main complications of radiotherapy and dose limiting factor. To ameliorate this complication, we used melatonin as a radioprotective agent due to its antioxidant and anti-inflammatory effects, free radical scavenging, improving overall survival after irradiation as well as minimizing the degree of DNA damage and frequency of chromosomal abrasions.Methods:Sixty male Wistar rats were randomly assigned to 4 groups: control (C), melatonin (M), radiation (R) and melatonin + radiation (MR). A single dose of 30 Gy gamma radiation was exposed to the right hind legs of the rats while 40 mg/ml of melatonin was administered 30 minutes before irradiation and 2 mg/ml once daily in the afternoon for one month till the date of rat’s sacrifice. Five rats from each group were sacrificed 4, 12 and 20 weeks after irradiation. Afterwards, their exposed skin tissues were examined histologically and biochemically.Results:In biochemical analysis, we found that malondialdehyde (MDA) levels significantly increased in R group and decreased significantly in M and MR groups after 4, 12, and 20 weeks, whereas catalase (CAT) and superoxide dismutase (SOD) activities decreased in the R group and increased in M and MR groups during the same time periods compared with the C group (p<0.05). Histopathological examination found there were statistically significant differences between R group compared with the C and M groups for the three different time periods (p<0.005, p<0.004 and p<0.004) respectively, while R group differed significantly with MR group (p<0.013). No significant differences were observed between C and M compared with MR group (p>0.05) at 4 and 20 weeks except for inflammation and hair follicle atrophy, while there were significant effects at 12 weeks (p<0.05).Conclusion:Melatonin can be successfully used for the prevention and treatment of radiation-induced skin injury. We recommend the use of melatonin in optimal and safe doses. These doses should be administered over a long period of time for effective radioprotection and amelioration of skin damages as well as improving the therapeutic ratio of radiotherapy.

scholarly journals Development of blood vessels of the greater omentum in the hepatic lobe after vascular ligation: an experimental model in the rats

2006 ◽  
Vol 21 (6) ◽  
pp. 416-421 ◽  
Author(s):  
Paulo Cesar Silva ◽  
Nelson Jamel ◽  
Ricardo Antonio Refinetti ◽  
Eduardo Ferreira Manso ◽  
Alberto Schanaider
Keyword(s):  
Blood Flow ◽  
Blood Vessels ◽  
Wistar Rats ◽  
Histopathological Examination ◽  
Greater Omentum ◽  
Hepatic Lobe ◽  
Vascular Lumen ◽  
Vascular Ligation ◽  
Male Wistar Rats ◽  
The Right

PURPOSE: To verify the development of blood vessels between the greater omentum and the liver in the presence of distinct liver blood intake blockages. METHODS: Two hundred and eighty conventional male Wistar rats were used, divided into 5 groups: control (n=35), laparotomy (n=35); hepatic artery ligature (n=70), ligature of the right-hand branch of the portal vein (n=70); and ligature of both blood vessels (n=70). The last three groups were divided into two subgroups each (n=35), according to the presence or absence of the transposition of the greater omentum onto the right hepatic lobe. The postoperative periods were 1, 3, 7, 15, 30, 60 and 90 days. At the end of each period, the greater omentum and right hepatic lobe were collected for histopathological examination. The presence of blood vessels between the referred tissues was verified by the administration of Indian ink as a marker of vascular lumen. RESULTS: Macroscopic and microscopic observation and the dye marker demonstrated the distribution of blood vessels between the greater omentum and liver tissues. CONCLUSION: The greater omentum was capable of developing blood vessels when fixed to the parenchyma of the liver after the suppression of hepatic blood flow.

Popliteal artery thrombosis secondary to a tibial osteochondroma

VASA ◽  
2011 ◽  
Vol 40 (3) ◽  
pp. 251-255 ◽  
Author(s):  
Gruber-Szydlo ◽  
Poreba ◽  
Belowska-Bien ◽  
Derkacz ◽  
Badowski ◽  
...  
Keyword(s):  
Case Report ◽  
Magnetic Resonance Angiography ◽  
Popliteal Artery ◽  
Doppler Ultrasonography ◽  
Histopathological Examination ◽  
Previous History ◽  
Plain Radiography ◽  
Artery Thrombosis ◽  
History Of ◽  
The Right

Popliteal artery thrombosis may present as a complication of an osteochondroma located in the vicinity of the knee joint. This is a case report of a 26-year-old man with symptoms of the right lower extremity ischaemia without a previous history of vascular disease or trauma. Plain radiography, magnetic resonance angiography and Doppler ultrasonography documented the presence of an osteochondrous structure of the proximal tibial metaphysis, which displaced and compressed the popliteal artery, causing its occlusion due to intraluminal thrombosis..The patient was operated and histopathological examination confirmed the diagnosis of osteochondroma.

Successful Control of a Co-Infection Caused by Candida albicans and Pseudomonas aeruginosa in Keratitis

2020 ◽  
Vol 20 ◽  
Author(s):  
Debarati Paul ◽  
Suman Saha ◽  
Neelam Singh ◽  
Jayansgu Sengupta ◽  
Santi M. Mandal
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Candida Albicans ◽  
Histopathological Examination ◽  
Specific Interaction ◽  
Major Threat ◽  
Effective Combination ◽  
Male Farmer ◽  
Successful Control ◽  
The Right ◽  
Corneal Button

Introduction: Nowadays, co-infection by interspecific organisms is major threat in infection control. To identify the effective combination of drugs to control the keratitis caused by Candida albicans with Pseudomonas aeruginosa are attributed in this study. Materilas and Methods: The patient of a 47 years old male farmer with infection in the right eye which showed redness and watering was treated with fortified cefazolin and fortified tobramycin before referral. No pigmentation or vascularisation was noted. The excised corneal button was also subjected to microbiological and histopathological examination. Results: A rare case of keratitis caused by co-infection of Candida albicans with Pseudomonas aeruginosa was identified. Results confirmed the inter-specific interaction of the two microorganisms. Conclusion: Cases of co-infection by Candida and Pseudomonas are not abundantly reported and difficult to treat. In this case, treatment involved Amphotercin-B and ciprofloxacin, effectively eradicated the infection. This therapy may be successfully implied for such cases of co-infection in future.

scholarly journals Stereotactic Body Radiotherapy of a Solitary Metachronous Sphenoid Metastasis from Renal Cell Cancer: A Case Report

2021 ◽  
pp. 269-273
Author(s):  
Charles Marchand Crety ◽  
Estelle Vigneau ◽  
Camille Invernizzi
Keyword(s):  
Renal Cell Cancer ◽  
Renal Cell ◽  
Stereotactic Body Radiation Therapy ◽  
Clinical Presentation ◽  
Histopathological Examination ◽  
Cell Cancer ◽  
Papillary Renal Cell Carcinoma ◽  
Complete Response ◽  
Resonance Imaging ◽  
The Right

Nasosinus metastases from kidney cancer are an unusual clinical presentation although some cases are reported in the literature. Among these cases, sphenoidal metastases are even rarer. Here we report a case of lone sphenoid metastasis in patients with papillary renal cell cancer. Eight months after radical nephrectomy, the patient presented with progressively worsening diplopia. Magnetic resonance imaging showed a mass in the right sphenoid sinus. Histopathological examination of the biopsy sample confirmed diagnosis of sinonasal metastasis from papillary renal cell carcinoma. The patient was declined for surgical management and received stereotactic body radiation therapy. Reassessment MRI at 4 months showed a complete response of the treated sphenoid lesion.

scholarly journals Growth factors in the regulation of reparative response in the presence of peritoneal damage

2020 ◽  
Vol 5 (4) ◽  
Author(s):  
Irina A. Shurygina ◽  
Мichael G. Shurygin ◽  
Lubov V. Rodionova ◽  
Nataliya I. Ayushinova
Keyword(s):  
Growth Factors ◽  
Growth Factor ◽  
Extended Period ◽  
Tissue Growth ◽  
Tissue Response ◽  
Heparin Binding ◽  
Lower Quadrant ◽  
Male Wistar Rats ◽  
The Right ◽  
Endothelial Growth Factor

AbstractObjectivesTo study the expression of growth factors in the regulation of tissue repair after peritoneal damage tissue response to peritoneal damage.MethodsExperimental study in 35 male Wistar rats determining the evolution over time of the tissue response to aseptic peritoneal damage. A standardized bowel and peritoneal lesions were created in the right lower quadrant by laparotomy. Then, tissular expression of growth factors was evaluated by multiplex polymerase chain reaction at seven timepoints between 6 h and 30 days, postoperatively.ResultsTissular responses of granulocyte-stimulating factors (Csf2, Csf3), connective tissue growth factor (Ctgf), epidermal growth factors and receptor (Egf, Egfr), fibroblast growth factors (Fgf2, 7 and 10), heparin binding EGF-like growth factor (Hbegf), hepatocyte growth factor (Hgf), insulin-like growth factor-1 (Igf1), mitogenic transforming growth factors (Tgfa, Tgfb1, Tgfbr3), and vascular endothelial growth factor A (Vegfa) were biphasic with a first expression peak at day 3, followed by a more pronounced peak at day 14.ConclusionsWe observed a long-lasting, widespread response of tissular growth factors for at least two weeks after peritoneal damage. To be clinically effective, the prophylaxis of postoperative adhesions might be needed for an extended period of time.

scholarly journals Immunohistochemical detection of procalcitonin in fibrolamellar hepatocellular carcinoma

2021 ◽  
Author(s):  
Kotaro Matsumoto ◽  
Kentaro Kikuchi ◽  
Ayako Hara ◽  
Hiromichi Tsunashima ◽  
Koichi Tsuneyama ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Histopathological Examination ◽  
Epigastric Pain ◽  
Positive Staining ◽  
C Reactive Protein ◽  
Fibrolamellar Hepatocellular Carcinoma ◽  
Tumor Biopsy ◽  
Reactive Protein ◽  
Right Lobe ◽  
The Right

AbstractA 25-year-old woman with fever and epigastric pain was referred to our hospital. Blood examination showed significant liver dysfunction, markedly high C-reactive protein (CRP 19.1 mg/dL) and procalcitonin (48.3 ng/mL) levels. Dynamic computed tomography showed a tumor approximately 120 mm in size in the right lobe of the liver, but with no abscess formation. The patient was hospitalized and started on antibiotics; her CRP level improved, but the procalcitonin level did not decrease. Histopathological examination of the liver tumor biopsy revealed fibrolamellar hepatocellular carcinoma (FLC). Positive staining of the FLC with an anti-procalcitonin antibody suggested the production of procalcitonin.

scholarly journals Percutaneous C-Arm Free O-Arm Navigated Biopsy for Spinal Pathologies: A Technical Note

Diagnostics ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 636
Author(s):  
Masato Tanaka ◽  
Sumeet Sonawane ◽  
Koji Uotani ◽  
Yoshihiro Fujiwara ◽  
Kittipong Sessumpun ◽  
...  
Keyword(s):  
Histopathological Examination ◽  
Correct Diagnosis ◽  
Standard Technique ◽  
Percutaneous Biopsy ◽  
Technical Note ◽  
Spinal Tumors ◽  
Histopathological Diagnosis ◽  
Ct Guided ◽  
Ct Guided Biopsy ◽  
The Right

Background: Percutaneous biopsy under computed tomography (CT) guidance is a standard technique to obtain a definitive diagnosis when spinal tumors, metastases or infections are suspected. However, specimens obtained using a needle are sometimes inadequate for correct diagnosis. This report describes a unique biopsy technique which is C-arm free O-arm navigated using microforceps. This has not been previously described as a biopsy procedure. Case description: A 74-year-old man with T1 vertebra pathology was referred to our hospital with muscle weakness of the right hand, clumsiness and cervicothoracic pain. CT-guided biopsy was performed, but histopathological diagnosis could not be obtained due to insufficient tissue. The patient then underwent biopsy under O-arm navigation, so we could obtain sufficient tissue and small cell carcinoma was diagnosed on histopathological examination. A patient later received chemotherapy and radiation. Conclusions: C-arm free O-arm navigated biopsy is an effective technique for obtaining sufficient material from spine pathologies. Tissue from an exact pathological site can be obtained with 3-D images. This new O-arm navigation biopsy may provide an alternative to repeat CT-guided or open biopsy.

scholarly journals Evaluation of Juniperus communis L. seed extract on benign prostatic hyperplasia induced in male Wistar rats

2021 ◽  
Vol 27 (1) ◽  
Author(s):  
Fatemeh Akbari ◽  
Mohammad Azadbakht ◽  
Kanu Megha ◽  
Ayat Dashti ◽  
Lale Vahedi ◽  
...  
Keyword(s):  
Benign Prostatic Hyperplasia ◽  
Wistar Rats ◽  
Histopathological Examination ◽  
Seed Extract ◽  
Prostatic Hyperplasia ◽  
Vehicle Group ◽  
Common Disease ◽  
Therapeutic Effects ◽  
Juniperus Communis ◽  
Male Wistar Rats

Abstract Background Benign prostatic hyperplasia (BPH) is a common disease which causes various health problems for elderly men such as urinary retention, recurring urinary tract infection and bladder stones. The aim of this study is to evaluate the therapeutic effects of Juniperus communis L. seed extract (JCS) on BPH in male Wistar rats. Methods To this end, 30 rats were divided into 5 groups (N = 6): group 1 (vehicle), group 2 (disease control), group 3 (standard medicine; 10 mg/kg finasteride), and groups 4 and 5 were treated with 300 mg/kg and 600 mg/kg of the hydroalcoholic JCS seed extract, respectively. Groups 2, 3, 4 and 5 received testosterone enanthate to induce prostatic hyperplasia. At the end of experimental period (28 days), prostate glands were cut off under anesthesia. Histopathological examination was done and biochemical parameters such as Malondialdehyde, Glutathione and protein carbonyl were also measured. Their body weights were also observed during the study. At the end of the experiment, prostate weights and prostate specific antigen (PSA) levels were measured. Prostate index, inhibition prostate weight and inhibition prostate index were also calculated. Results Both histopathological examination and biochemical parameter results showed significant improvements in rats treated with finasteride and 600 mg/kg JCS extract (p < 0.01). In addition, PSA levels showed significant decrease in comparison with the disease group. But acute toxicity test indicated that using JCS extract resulted in an increase in liver enzymes (ALP, LDH, SGOT, SGPT). As a result, the extract should be used with caution. Conclusions Oral administration of JCS extract is effective on preventing testosterone-induced benign prostatic hyperplasia.

scholarly journals Histopathological analysis of gangliosides use in peripheral nerve regeneration after axonotmesis in rats

2008 ◽  
Vol 23 (4) ◽  
pp. 364-371 ◽  
Author(s):  
Camila Maria Beder Ribeiro ◽  
Belmiro Cavalcanti do Egito Vasconcelos ◽  
Joaquim Celestino da Silva Neto ◽  
Valdemiro Amaro da Silva Júnior ◽  
Nancy Gurgel Figueiredo
Keyword(s):  
Sciatic Nerve ◽  
Peripheral Nerve ◽  
Nerve Regeneration ◽  
Schwann Cells ◽  
Peripheral Nerve Regeneration ◽  
Cell Activity ◽  
Control Group ◽  
Histopathological Analysis ◽  
Male Wistar Rats ◽  
The Right

PURPOSE: To analyze the action of gangliosides in peripheral nerve regeneration in the sciatic nerve of the rat. METHODS: The sample was composed of 96 male Wistar rats. The animals were anaesthetized and, after identification of the anaesthesic plane, an incision was made in the posterior region of the thigh, followed by skin and muscle divulsion. The right sciatic nerve was isolated and compressed for 2 minutes. Continuous suture of the skin was performed. The animals were randomly divided into two groups: the experimental group (EG), which received subcutaneous injection of gangliosides, and the control group (CG), which received saline solution (0.9%) to mimic the effects of drug administration. RESULTS: No differences were observed between the experimental and control groups evaluated on the eighth day of observation. At 15 and 30 days the EG showed an decrease in Schwann cell activity and an apparent improvement in fibre organization; at 60 days, there was a slight presence of Schwann cells in the endoneural space and the fibres were organized, indicating nerve regeneration. At 15 and 30 days, the level of cell reaction in the CG had diminished, but there were many cells with cytoplasm in activity and in mitosis; at 60 days, hyperplastic Schwann cells and mitotic activity were again observed, as well as nerve regeneration, but to a lesser extent than in the EG. CONCLUSION: The administration of exogenous gangliosides seems to improve nerve regeneration.

scholarly journals Acute Abdomen due to Mutual Tangle of Two Small Paratubal Cysts

2018 ◽  
Vol 2018 ◽  
pp. 1-4
Author(s):  
Hiroharu Kobayashi ◽  
Shinichi Shibuya ◽  
Kentaro Iga ◽  
Keiichiro Kato ◽  
Airi Kato ◽  
...  
Keyword(s):  
Acute Abdomen ◽  
Histopathological Examination ◽  
Lower Abdominal Pain ◽  
Cystic Teratoma ◽  
Cystic Mass ◽  
Mature Cystic Teratoma ◽  
Contrast Enhanced ◽  
The Right ◽  
Enhanced Computed Tomography ◽  
Paratubal Cyst

A 30-year-old woman (gravida 0) visited our hospital with a complaint of right lower abdominal pain. Transvaginal ultrasonography revealed a 5-cm swollen right ovary, which was suspected to be a mature cystic teratoma. Pelvic examination revealed moderate pain. Contrast-enhanced computed tomography showed a 44-mm cystic mass containing fat and calcified material in the right pelvis. Since torsion was suspected, emergent laparoscopic surgery was performed. Intraoperative findings were a swollen right ovary without torsion or congestion. Two small pedunculated 1- and 2-cm diameter paratubal cysts that grew from almost the same place of the ampulla of the right fallopian tube were observed. The thin stalk of the 1-cm paratubal cyst was entangled around the stalk of the 2-cm paratubal cyst, with its head congested. Through a small abdominal laparoscopic incision, the tumor of the right ovary and the two paratubal cysts were excised. Histopathological examination revealed that the right ovarian tumor was a mature cystic teratoma, and the two paratubal cysts had no malignancy. This case showed that only a 2-cm tumor with congestion caused the acute abdomen.

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