For HEK 293 and MCL-5 cells the effects seen were in agreement with the cytological examinations. Since the Annexin V-conjugate-7-AAD double staining
provide inconclusive results especially for the SH-SY5Y cells further experiments looking at biochemical effects of MSE treatment was warranted. Discovery of a family of cysteine protesases named caspases (Srinivasula et al 2001; Alnemri et al 1996) in mammalian cells has made important discoveries towards its function in cell death mainly in apoptosis.
MS E 5 9 h E 0 G inh . Kratom Ban Florida Chilmark m 1 0 e G n. M SE 0 en nh S 5 . Groups of treatment Fig. Flow cytometry analysis of the subG1 population (apoptotic cells) of SHSY5Y cells after 48 hr treatment with various caspase inhibitors and MSE.
The term of apoptosis was first coined by Kerr et al (1972) and it was described as an active way of killing the cells and organising its disposal which was easily detected under a mitragyna speciosa korth microscope as cells undergo condensation of nuclear chromatin followed by formation of blebbing and segregation of the nucleus into fragments known as apoptotic bodies and finally disposed of by digestion via lysosomal pathway (Kerr et al 1972). Kratom Ban Florida Chilmark Whereas necrosis described as a passive way of cell death is morphologically marked by cellular swelling chromatin condensation followed Kratom Ban Florida Chilmark by kratom opiate withdrawal dosage
cellular and nuclear lysis with subsequent inflammation (Wyllie
et al 1980). Recently necrosis was described as morphological alterations of cells after cell death (Majno and Joris 1995; Cruchten and Broeck 2002).
The results from the wound study provided information that MSE itself is not able to promote cellular migration in vitro. The results from different cell lines used in the viability studies demonstrated that the human neuronal SH-SY5Y cell was the most sensitive cell line examined. The IC50 following 24 hr treatment of SHSY5Y cells were 91
- Takayama H
- BMJ 332: 175-176 Weinert T
- Nat Rev Cancer
- Cell death by necrosis: towards a molecular definition
- Four deaths and a funeral: from caspases to alternative mechanisms
- ANOVA with Tukey-Kramer post test
- Based on the results of the three different cell lines examined it is suggested that MSE causes cell cycle arrest at G1 phase and S phase
. MSE and MIT respectively.
In the absence of rat liver S9 (Table 3. MIT was reduced to 17% of the concurrent vehicle control implying excessive toxicity effects. This was due to the measured RSG value being very low (18.
Effect of MSE and MIT on p53 protein levels SH-SY5Y a neuroblastoma cell known to have wild type p53 (Moll et al 1995 1996) was examined by immunoblotting as described in section 4. Image J version 1. The effects of MSE on p53 expression levels were assessed. The indo bali kratom
p53 protein level was found to be decreased in a dose-dependant manner especially at lower concentrations of MSE treatment for 24 hr as shown in fig.