فهرست مطالب marzei momeninezhad amiri

Diabetes caused by insulin production disturbance is considered as the most common metabolic disorder all over the world. Diabetes may outbreak because of low insulin secretion by Islets of Langerhans β-cells, insulin resistance or both of them. In this way, using stem cells, which have the capability to differentiate into Pancreatic β-cells, is one of novel methods in this field. MSCs are the most important candidates for cellular therapy.
Insulin level was examined using ELIZA method. In order to examine the morphology of differentiated cells, they were stained by Dithizone. Insulin-producer cells are cells which turn into red as a result of staining. Specific gene involving insulin-producing cells was evaluated by Real Time-PCR method.
The ELISA results showed that the treated cells secreted more insulin than the control group. Moreover, we found differentiation of MSCs toward insulin-secreting cells. In order to evaluate insulin production in clusters on day 21 of differentiation, we used dithizone (DTZ) staining. PDX-1 gene was confirmed by RT- PCR analysis.
In this study, we differentiated MSCs into insulin-producing cells in vitro. It is concluded that MSCs may be considered as an excellent candidate in β-cell therapy in diabetes patients.

With regards to the high potential of medicinal plants in the production of biopharmaceuticals, one can rely on the promising prospect of insulin production via plant resources.
This study was conducted with the aim of using plant extract for insulin-producing cells.
This was a quasi-experimental study using critical case sampling. Six samples were gathered from the umbilical cord (Wharton’s jelly) in a governmental university affiliated hospital, Sari, Iran in 2017 after successful isolation of mesenchymal stem cells. Initially, Nigella sativa seeds extraction was performed to prepare the extract for cellular differentiation. Next, dithizone (DTZ) staining was used to evaluate insulin production, and insulin level was examined by the enzyme-linked immunosorbent assay (ELISA). Data were analyzed was analyzed with the SPSS version 16 software using independent sample t-test.
The mean of the amount of insulin secretion was 92.33 ± 5.13 ng/ml for the intervention and 0.33 ± 0.15 ng/ml for the control group. The results showed that there was a significant difference in the average insulin in the culture obtained from Nigella sativa seeds between control and intervention groups (P = 0.001). In addition, via the ELISA kit and specific dithizone staining, insulin-producing cells were proven.
In this regard, it could be concluded that the extract of Nigella sativa seeds was capable of including differentiation of mesenchymal stem cells derived from Wharton’s jelly to IPCs.

Wharton`s jelly-derived mesenchymal stem cells (WJ-MSCs), have a high proliferation valency and they do not produce teratogen or carcinogen after subsequent transplantation. They are known as regenerative medicine. Thus more research is needed on the isolation and characterization of mesenchymal stem cells. In this experimental study, we obtained Wharton's jelly tissues from mothers during normal vaginal delivery, after obtaining their informed consent. Mesenchymal stem cells were isolated from cultured Wharton`s jelly, cultured, and were then examined for their proliferation, immunophenotypes, and differentiation capacities. The immunophenotypes of WJ-MSCs were analyzed by flow cytometry. Differentiation was performed resulting in osteogenic, chondrogenic and adipogenic cells. WJ-MSCs formed a homogenous monolayer of adherent spindle-shaped cells. Our results showed the high capacity of the proliferation of WJ-MSCs. Immunophenotyping further confirmed the purity of the isolated cells; their surface antigen expression showed the phenotypical properties like those of WJ-MSCs. The expanded cells were positive for CD 90, CD105, and CD44; they were negative for CD34 and HLA-DR surface markers. The cells had the adipocytic, osteocytic and chondrogenic differentiation capacity. The isolation and characterization of WJ-MSCs with high purity had been conducted, and the results were obtained in a short span. The present study has revealed the feasibility of the culture medium with high glucose and 15% FBS in isolation and proliferation of WJ-MSCs. When Wharton`s jelly pieces were put in the dry bottom of the flask, very effective separation of the MSCs was achieved.

Background and Today, increased rate of demand for insulin is predictable due to increasing cases of diabetics in the world. Therefore, it is necessary to develop economic approaches and increasing the production of insulin for the future and medicinal plants could be regarded as a promising prospect for insulin production.
The Allium ursinum and Silybum marianum were collected. Each herbarium was identified in School of Pharmacy affiliated with Mazandaran University of Medical Sciences and the extract was used by percolation with 70% ethanol extraction, after the solvent was evaporated by using the rotary. After the successful isolation of mesenchymal stem cells (MSCs), Wharton's jelly was derived and approved. Then, the mesenchymal stem cells were differentiated to pancreatic beta cells with two herbal extracts.
Compared with the control group, there was a significant difference between the levels of insulin in the culture medium obtained from the two plants (P= 0.0001). In addition, via specific dithizone staining, the insulin producing cells (IPCs) were proven.
The extracts of Allium ursinum and Silybum marianum were found capable in inducing differentiation of the mesenchymal stem cells derived from Wharton's jelly into IPCs. Allium ursinum was seen with the highest rate of insulin production, while Silybum marianum had the lowest rate of insulin production, therefore, Allium ursinum could be more effective in treatment of diabetes.