Is it coincidence that iron and melanin coexist in hepatic and other melanomacrophages?

نویسندگان

  • J M Henninger
  • W A Beresford
چکیده

Use of a Prussian-blue histochemical method shows iron in some but not all hepatic melanomacrophages of turtle, alligator, caiman and anole. The hypothesis prompted is that melanomacrophages in general synthesize melanin to render less noxious free radicals arising from catalysis by the iron.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Internal pigment cells respond to external UV radiation in frogs.

Fish and amphibians have pigment cells that generate colorful skins important for signaling, camouflage, thermoregulation and protection against ultraviolet radiation (UVR). However, many animals also have pigment cells inside their bodies, on their internal organs and membranes. In contrast to external pigmentation, internal pigmentation is remarkably little studied and its function is not wel...

متن کامل

اندکس‌های آهن سرم، رسوب کبدی آهن و فیبروز/نکروز التهابی کبدی در هپاتیت C مزمن

Background: We studied the effects of serum iron level, hepatic iron deposition and other metabolic disorders i.e., insulin resistance in hepatic fibrosis development. Materials and methods: Among 60 patients with chronic hepatitis C, we measured serum iron, ferritin and transferrin level. Meanwhile, hepatic biopsies were obtained from 43 patients for whom iron deposition, inflammatory necrosi...

متن کامل

Evaluation of the relationship between hepatic and cardiac iron overload with MRI T2* and carotid intima media thickness with Doppler ultrasound in beta thalassemia major patients

Background: Iron overload is caused early progression of atherosclerosis in beta thalassemia patients due to regular repeated blood transfusion. MRI T2* is a gold standard non-invasive method for detecting hepatic and cardiac iron overload. The aim of this study was the comparison of carotid intima media thickness (CIMT) in the patients and healthy control groups with Doppler ultrasound for ear...

متن کامل

Isolation and Characterization of Melanin Producing Pseudomonas stutzeri Strain UIS2 in the Presence of l-tyrosine and Survey of Biological Properties of Its Melanin

Background: Melanin is a negative charge hydrophobic complex pigment. Melanin is produced naturally in bacteria to protect them against UV, free radicals and environmental stresses. Pigment production in bacteria has more advantages than other biosources due to its rapid growth, higher efficiency and easier extraction. The aim of this study was the isolation, biochemical and molecular identific...

متن کامل

Coincidence of Material and Mental Elements: Nature and Approache

According to accepted principles of criminal law, whether in written Civil Law system or common law System, the mere existence of material and mental elements of a crime is not suffice, but their coincidence is also required. Only when they coincide in time, it may be said that the crime has occurred and criminal responsibility is completed. Many discussions have been put-forward in legal writi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Histology and histopathology

دوره 5 4  شماره 

صفحات  -

تاریخ انتشار 1990