alaa_fahmy

أ.د/علاء يسري مصطفي

Professor - Professor of invertebrates and marine toxins

Faculty of science

Address: Zoology Department -Faculty of Science

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REDESCRPTION AND SOME ECOLOGICAL TRAITS OF THREE PLEUROBRANCH SPECIES (GASTROPODA: MOLLUSCA) INHABITING THE NORTH-WESTERN COAST OF THE RED SEA, EGYPT

2013 | Keywords Pleurobranchus grandis, Pleurobranchus albiguttatus, Red Sea, Berthellina citrina, Temporal distribution,
REDESCRPTION AND SOME ECOLOGICAL TRAITS OF THREE PLEUROBRANCH SPECIES (GASTROPODA: MOLLUSCA) INHABITING THE NORTH-WESTERN COAST OF THE RED SEA, EGYPT
Three pleurobranch species; Berthellina citrina (Ruppel and Leuckart, 1828), Pleurobranchus grandis (Pease, 1868) and Pleurobranchus albiguttatus (Bergh, 1905) were collected from seven sites in the upper intertidal zone, on the North Western Coast of the Red Sea; Egypt. They inhabit the lower surfaces of medium sized stones in pools containing water all the time. A redescrpition of Berthellina citrina was ... Read more

Histological and immunohistochemical effects of the ink fluid of the sea hare Aplysia dactylomela on splenic macrophages of mice

2012 | Keywords Splenic macrophages, Aplysia dactylomela, Apoptosis, Ink fluid, Sea hares,
Histological and immunohistochemical effects of the ink fluid of the sea hare Aplysia dactylomela on splenic macrophages of mice
Sea hares, _Aplysia dactylomela_, are soft bodied Opisthobranch mollusks which inhabit the shallow water of the Red sea. They release purple and sticky ink secretion towards the attacker to defend themselves. Sea hares caused many cases of human toxicity especially in people of some Asian countries who used to feed on it as in Japan, China, Philippines and Fiji. The ... Read more

Cytotoxic cembranoids from the Red sea soft coral Sarcophyton glaucum

2011 | Keywords dihydroxydeepoxysarcophine,
Cytotoxic cembranoids from the Red sea soft coral Sarcophyton glaucum
One new cembrane diterpene, 2R,7R,8R-dihydroxydeepoxysarcophine (1), together with three known compounds, 7α,8β-dihydroxydeepoxysarcophine (2), 7β-acetoxy-8α-hydroxydeepoxysarcophine (3), and sarcophine (4), have been isolated from the Red Sea soft coral Sarcophyton glaucum. Their structures were determined using 1D and 2D NMR spectroscopy. 7β-Acetoxy-8α-hydroxydeepoxysarcophine (3) exhibits cytotoxic activity against HepG2, HCT-116, and HeLa cells with IC50 values of 3.6, 2.3, and 6.7 µg/mL, respectively ... Read more

Heat shock protein 70 expression and apoptotic DNA fragmentation induced by the ink fluid of the sea hare Aplysia oculifera on male mice

2010 | Keywords Hsp70,
Heat shock protein 70 expression and apoptotic DNA fragmentation induced by the ink fluid of the sea hare Aplysia oculifera on male mice
_Aplysia__oculifera _like other sea hares (Mollusca: Opisthobranchia) discharging ink to protect themselves against predators. The ink contains many of bioactive factors acting against potential enemies with toxic activities. The aim of the present study is to test the effect of ink fluid of _A. oculifera_ on Hsp70, apoptotic DNA fragmentation and liver and kidney functions on mice. The animals were ... Read more

Anatomical and histological studies on the digestive tract of octopus vulgaris Cuvier, 1797, from the Red Sea,

2010 | Keywords Octopus vulgaris, Red Sea, SEM, intestine, Radula, Digestive tract, Anatomy,
Anatomical and histological studies on the digestive tract of octopus vulgaris Cuvier, 1797, from the Red Sea,
The digestive tract of _Octopus vulgaris_ consists of the buccal mass complex with a beak and radula, oesophagus, crop, stomach, caecum, digestive gland, intestine and salivary glands. The buccal mass contains the lower and upper beaks, radular apparatus and salivary papilla. Each beak consists of a hood and lateral walls; two wings are present in the lower beak only. The ... Read more

Numerical taxonomic studies of some species of sea hares (Opisthobranchia: Anaspidea: Aplysiidae) from the Red sea Egypt.

2009 | Keywords Aplysiidae, Numerical taxonomy, UPGAMA cluster, Sea hares, Red Sea,
Numerical taxonomic studies of some species of sea hares (Opisthobranchia: Anaspidea: Aplysiidae) from the Red sea Egypt.
A numerical taxonomic study of ten species of sea hares collected from the Egyptian coast of the Red Sea was conducted based on 135 morphological and anatomical characters. The family Aplysiidae represents two clades; the first clade includes the subfamily Aplysiinae and the second includes the remaining subfamilies namely: Dolabellinae, Dolabriferinae and Notarchinae. For the first clade, the subfamily Aplysiinae ... Read more

Ultrastructural study on the effect of ink fluid of the sea hare Aplysia dactylomela on mice hepatocytes and kidney tubules of male mice.

2007 | Keywords Aplysia dactylomela, Hepatocytes, Kidney Tubules, Sea hares, Liver functions, Apoptosis,
Ultrastructural study on the effect of ink fluid of the sea hare Aplysia dactylomela on mice hepatocytes and kidney tubules of male mice.
SEA HARES ARE A GROUP OF MARINE MOLLUSCS WHICH POSSESS MANY WAYS FOR DEFENSE INCLUDING THE CHEMICAL DEFENSE. THE HARES PRODUCE INK FLUID FROM THE INK GLAND TO ESCAPE AND PROTECT THEMSELVES FROM THEIR ENEMIES. THE INK GLAND OF SEA HARES SECRETE, THE INK FLUID WHICH CONTAINS MANY BIOACTIVE FACTORS ACTING AGAINST POTENTIAL ENEMIES WITH TOXIC ACTIVITIES. _APLYSIA DACTYLOMELA_ IS ... Read more