مجله زیست شناسی جانوری
سال شانزدهم شماره 2 (زمستان 1402)

Over 100 million sperm are daily produced by the male reproductive system for the purpose of reproduction and fertility in male gender. During embryonic development, primordial germ cells migrate to the testes and transform into undifferentiated germ cells called spermatogonia, which are destined to develop into mature sperm through a process called spermatogenesis. Successful spermatogenesis and thus efficient fertility are dependent upon various factors, including Sertoli cell efficiency. Studies have reported a direct correlation between the morphology of Sertoli and germ cells indicating the importance of these somatic cells inside the spermatogenic tubes. The first structural investigations and possibilities about the function of these cells date back over 150 years when 23-year-old Enrico Sertoli first assessed the structure of these somatic cells. The results of years of research on various functions and effects of these cells have contributed significantly to studies on infertility. This has drawn more attention to the characteristics and mechanisms of physiological action of Sertoli cells, as well as the analysis of disorders related to them so that an effective step can be taken in the treatment of male fertility problems.

Colon cancer is one of the most common tumors in the human population. There are many drugs on the market to treat different types of cancer, but their use is limited due to toxic effects and side effects, and in the last ten, experts in this field are looking for suitable alternatives to common anti-cancer drugs. This study was aimed to assess the comparison of the effects of oxaliplatin on the nitric oxide level in colorectal adenocarcinoma SW480 and non-tumor HEK293 cell lines. In this experimental study, Oxaliplatin was prepared at concentrations of 1.95, 3.90, 7.8, 15.6, 32.25, 62.5, 125, 250 and 500 μg/ml and the cytotoxic effect was investigated on HEK293 and SW480 cell lines using MTT method. Nitric oxide was measured by Grease method and Real Time PCR technique was applied to evaluate the iNOS gene expression. Finally, one-way ANOVA and t-test were used to analyze the data. The results of this study indicated that Oxaliplatin had a lethal effect on the SW480 cell line at concentrations of 7.8 to 250 μg/ml, but showed no cytotoxic effects on normal cell lines at other concentrations. Oxaliplatin at concentrations of 10, 20, and 40 μg/ml significantly increased nitric oxide production in SW480 cells compared to HEK293 cells, which served as the normal cell line. The results of Real Time PCR showed that the expression of the iNOS gene in both SW480 and HEK293 cells was not significantly different from the control group, but was higher. The results indicated that use of oxaliplatin can cause excellent therapeutic effects on cancer cell lines with minimum side effects.

Today, due to the indiscriminate use of poisons and the resistance of pests to them, new types of poisons are produced every year. Movento is the latest insecticide that is used in pistachio orchards to control the psyllid pest, whose side effects on the reproductive system have not been investigated. The aim of this study was to investigate the effect of Movento on fertility in Balb/c mice. In this study, 18 adult and healthy male Balb/c mice were prepared and kept under standard conditions. Each group consisted of 9 mice. Mice were randomly divided into experimental and control groups. The experimental group received 79 mg/kg Movento and the control group received the same amount of distilled water daily for 60 days through oral gavage. At the end of the study, the mice were euthanized by injecting a mixture of xylazine and ketamine. Epididymal tail of the testes of mice was separated and placed in HTF culture medium. The parameters of sperm count, sperm viability, DNA damage of sperm, immature sperms and fertilization ability of sperms and blastocyst were evaluated. The data obtained from the study were analyzed by ANOVA method. The findings showed that sperm viability, the percentage of fertilized oocytes, two-celled and four-celled embryos, and the number of blastocysts were significantly reduced in the experimental group compared to the control. Also, sperms count in the experimental group compared to the control group decreased but was not significant. However, immature sperms and DNA damage of sperm in the experimental group was increased compared to the control group. Therefore, it can be concluded that Movento poison reduces fertility in mice by DNA damage of sperm and chromatin.

Diazinon (DZN) is an organophosphate insecticide that causes a wide range of pathological effects on the male reproductive system, disturbances in sperm production and quality, and fertility problems. This study investigated the protective effect of coenzyme Q10 treatment on sperm quality, oxidant/antioxidant system, and histopathology of testicular tissue in male rats after exposure to diazinon. This experimental study was carried out on 16 adult male Wistar albino rats with an approximate weight of 150 to 230 gr, which were obtained from the animal care center.The animals were randomly divided into four groups (n=4) and were tested by intraperitoneal injection for 30 days which including the diazinon exposure group (50 mg/kg of diazinon dissolved in sesame oil intraperitoneally injected), the coenzyme Q10 and diazinon exposure group (50 mg/kg of diazinon and 10 mg/kg of coenzyme Q10 dissolved in sesame oil intraperitoneally injected), group of coenzyme Q10 (10 mg/kg of coenzyme Q10 dissolved in sesame oil intraperitoneally injected), and the control group (1.5 mg/kg of sesame oil intraperitoneally injected). After treating coenzyme Q10 with diazinon, a significant increase in the number and motility of sperm and a decrease in sperm mortality were observed (P<0/05). Exposure to diazinon with coenzyme Q10 treatment was able to decrease the level of malondialdehyde (MDA) and increase the activity of superoxide dismutase (SOD) compared to the diazinon group (P<0/05). Simultaneous exposure to diazinon and coenzyme Q10 treatment led to a decrease in testicular histopathological damage after exposure to diazinon. It seems that coenzyme Q10 can have a good protective effect against oxidative damage in the male reproductive system caused by exposure to diazinon.

The current study was conducted to evaluate the interaction between different levels of protein and feed structure on performance in calves. Accordingly, a total number of 48 Holstein calves (A mixture of both sexes) were randomly assigned to 4 dietary treatments with 12 replicate pens, based on a factorial design. Dietary treatments consisted of 1) ground starter with % 18 CP, 2) ground starter with % 22 CP, 3) texture starter with % 18 CP and 4) texture starter with % 22 CP. In this study, digestibility of nutrients, rumen and blood parameters of suckling calves were measured. The interaction between the main effects for the amount of beta-hydroxybutyrate in the blood on the 70th day of the experiment was significant (p < 0.05). In this way, flour feed with 18% protein had the lowest amount of beta-hydroxybutyrate. The interaction between the main effects for other blood parameters was not significant (p < 0.05). The interaction between the main effects for ruminal parameters and digestibility was not affected by the form and protein level of the initial feed (p < 0.05). In general, there was no significant difference between the textured feed and coarse grinding, and the protein level of 18 and 22% was not observed in the tested groups.

Alpha-amylase enzyme inhibitors prevent the conversion of polysaccharides into monosaccharides. Inhibiting this enzyme from the absorption of simple sugars in the digestive system and thus preventing the increase in blood glucose levels has been effective. The purpose of this study is to investigate the effect of ethyl acetate, methanol and water-methanol extracts of Holothuria parva on alpha-amylase enzyme inhibition. In this research, first extraction was done from the body wall, intestines and viscera of Holothuria parva based on increasing polarity, and in the next step, alpha-amylase enzyme activity was determined in the presence of different extracts under enzyme activity measurement conditions by DNSA colorimetric method, and IC50 were obtained and compared with the amount of acarbose as a positive control. In this study, the results showed that the percentage of inhibition increased with the increase in the concentration of the extracts and among all the extracts, the highest inhibitory percentage related to acarbose at a concentration of 0.8 mg/ml equals 96.92% and the lowest amount related to the water-methanol extract of the body wall at a concentration of 0.2 mg/ml equals 61.79% and the inhibition percentage of acarbose in both body parts is higher than other extracts (IC50=88.18-91.74 mg/ml). Considering the inhibitory effect of extracts extracted from Holothuria parva species on alpha-amylase enzyme, in the future, it can be used in the field of producing antidiabetic drugs of marine origin with minimal adverse side effects.

This study was performed to evaluate the effect of hydroalcoholic extract of black radish (Raphanus sativua) on complete blood cell count and kidney function in mice. Forty white mice were divided into four equal groups. Mice in the control group received only saline solution and mice in the second to fourth groups received 50, 100 and 150 mg/kg body weight of black radish plant extract, respectively, by intraperitoneal injection. After a 21-day trial period, blood samples were taken from the heart to count complete blood cells (hematocrit, hemoglobin, red and white blood cells) and urea nitrogen and creatinine in serum were measured. The results showed that treatment with black radish extract in any of the studied doses did not cause a significant change in blood cell count and nitrogen urea and creatinine (p < 0.05). These results were confirmed by histopathological examination of the kidney. Treatment of mice with horseradish extract resulted in a non-significant decrease in blood urea nitrogen and creatinine compared to the control group. Also, with increasing the dose of the extract, the amount of urea nitrogen and creatinine in each group decreased compared to the previous group, although this decrease was not significant (p < 0.05). The results of the present study indicate the extract in the doses used in the study, is not nephrotoxic and it can be said that under physiological conditions, the use of hydroalcoholic extract of radish not only has no toxic effect on the kidney in high doses, but also has positive effects on kidney function.

Newcastle disease (ND) is one of the most important viral disease which make lots of casualty in poultry flocks. Therefor vaccination against ND is the main way to prevents the damages. The aim of this research was evaluation of antibody titer from ND vaccines and histopathological effects in Sebright chickens. In this research, 72 one-day-old Sebright chickens were tested in a completely random format in two groups (with three replications). From day one to the end of period, the breeding conditions were the same for all quails and the differences between the groups were only in the Newcastle disease vaccination program. Vaccination in the first group was based on using: Clone ND vaccine in day old (eye drop), injection of ND/AI + Clone ND (eye drop) in day 8 and using Avinew vaccine (drinking water) in day 15. The second group was considered as the control group (without vaccination). Blood samples were taken at day 25 and 35 and evaluated by HI test. Also, a sample was taken from the intestine and a histopathology specimen was prepared. The results of statistical analysis by Tukey test showed that the mean titer of Newcastle antibody in the vaccinated groups was significantly different (p < 0.01). Also, the results of morphometry and morphology of Newcastle vaccine in the intestinal tissue in the vaccinated groups showed a significant difference compared to the control group (p < 0.05). This study presents as a strategy in terms of antibody production and histological effects after vaccination in Sebright farms.

The aim of this study was to evaluate the anatomical structures of the urinary system in the nephrogram and pyelogram phases, and also to determine an accurate standard for the size of kidneys, ureters, and bladder in German shepherd dogs. This study was conducted on 14 German shepherd dogs with mean age of 2.7 years and an average weight of 35.12 kg. For urography studies, xylazine and diazepam were first administered to each animal to sedate, and then meglumine compound was slowly injected into the cephalic vein. Radiography was performed in the lateral and ventro-dorsal positions at 0, 1 and 5 minutes after injection, and then this procedure was continued every 5 minutes until the 60th minute to visualized the pyelogram phase completely. In the lateral radiographs of each dog, the length of the second lumbar vertebra body was measured to be used as an index in determining the standard size of the kidneys. Based on the results of this study, the mean ratio of the length, width and thickness of the left kidney and the ratio of the left ureter length to the length of the second lumbar vertebra body in German shepherd dogs were 2.69, 1.21, 1.24 and 6.47, respectively. The same ratios in the right kidney were 2.77, 1.30, 1.28 and 8.28, respectively. According to the radiological results, 15 minutes after the injection of the contrast media, the nephrogram and pyelogram phases are observed, which indicates the normal functioning of the kidneys. The exact standards obtained in this study can be used in the interpretation of results and clinical decisions to determine the normal and abnormal size of kidneys, ureters and bladder in German shepherd dogs.

Hepatic insulin resistance is associated with NAFLD and it is a major factor in the pathogenesis of type 2 diabetes and metabolic syndrome. Insulin resistance causes lipolysis in adipose tissue and disturbance in the regulation of lipid metabolism causes fat accumulation in the liver. In this study, the biological activities of Berberine and Sitagliptin to improve insulin resistance and lipid profile in Sprague-Dawley rats with type 2 diabetes was investigated. groups include 1: control (physiological serum as an alloxan solvent); 2: model (fatty liver + Alloxan); 3: Sitagliptin (fatty liver + Alloxan and Sitagliptin 10 mg/kg); 4: Berberine (fatty liver + Alloxan and Berberine 150mg/kg); 5: Berberine/Sitagliptin (fatty liver + Alloxan and Sitagliptin 5 mg/kg and Berberine 75 mg/kg). At the end of the treatment period, under anesthesia, Blood sampling done from the heart and lipid profile, glucose and insulin measured. The amount of triglyceride (p < 0.01), cholesterol (p < 0.05), LDL (p < 0.01), FFA (p < 0.05), fasting glucose (p < 0.05) and insulin (p < 0.01) in the coadministration group decreased compared to the model group and HDL increased, which was not significant. Berberine and Sitagliptin, especially when administered together, have a favorable effect on lipid metabolism and insulin resistance and can be considered as an effective treatment regimen for hyperlipidemia and fatty liver.

Nowadays, skin grafts use to replace lost or damaged skin around the world. Natural contaminants can exist on the skin and this contamination can be a threat to graft recipients. In this study, after obtaining human full thickness skin graft sample and culturing it in-vitro condition, skin samples were evaluated for cell viability and the presence of bacterial contamination during 72 hr. The amount of microbial contamination in the presence and absence of antibiotic gentamicin 0.02% was also investigated by standard methods. High cell viability during 72 hr in normal skin tissue samples was confirmed by the acridine orange staining. Electron scanning microscope observations, hematoxylin-eosin, and Masson's trichrome staining images clearly showed the difference between the two experimental groups. Skin graft samples lost the layers of dermis and epidermis (except the stratum corneum layer), in the absence of gentamicin due to contamination with bacteria which can be seen in the obtained images. Finally, the obtained results clearly showed the effect of high microbial contamination on the skin tissue structure, which can be caused by various factors.

The aim of this study was to determine the effect of different levels of Algae on performance and meat quality in Japanese quail. For this purpose, the numbers of 306 pieces of 3-days age of Japanese quail were used in a completely randomized design by; 6 experimental treatments, 3 replicates and 17 chickens per replication. The experimental treatments comprised different levels of Algae as; T1: no Algae (control group), T2; 0.05 %, T3: 0.1 %, T4: 0.15%, T5: 0.20 %and T5: 0.25% of this Algae was added to the basic diet. In addition to measuring yield performance at 35 days of age, 4 pieces of quail in both sexes (males and females) were randomly selected and slaughtered from each replicate for evaluation of meat quality. Our results showed that the effect of different levels of Algae in quail’s diets doesn’t have any significant effect on average body weight gaining, feed intake, feed conversion ratio and live weights (p > 0.05). Feeding different levels of Algae had significant effect on carcass weight (p < 0.05). Also, feeding other levels of Algae had significant effect on carcass yield rate (p < 0.05). Although, there was no significant difference between all treatments for meat malondialdehyde index (p > 0.05) But, it had significant effect on meat pH, water holding capacity and blood loss percentage between treatments (p < 0.05). In general, the results revealed that using Algae at level of % 0.1 of the diet could be effective for improving performance and meat quality in Japanese quail.

Esophageal cancer is the sixth cause of cancer death in the world and the eighth most common cancer in the world. One of the most characteristic features of this cancer is the resistance to chemo-radiotherapy and the high percentage of recurrence in patients. Beta-catenin marker is one of the main factors of metastasis and invasion in patients. EZH2 gene is a regulatory factor of gene expression and increases the proliferation of tumor cells and maintains the pluripotency of stem cells. EZH2 is aberrantly expressed in a variety of malignant cancers. β-Catenin is a structural component of adherens junctions along with cadherin and the main signaling agent of the Wnt pathway in the nucleus. Aberrant expression of beta-catenin often leads to cancer and metastasis. In this study, the EZH2 gene silencing vector was cloned in Escherichia coli bacteria and then extracted, and the EZH2 gene was silenced in YM-1 esophageal cancer cells. Then RNA extraction and cDNA synthesis were evaluated after confirming EZH2 gene silencing, beta-catenin expression using Real-time PCR technique. Cell migration test was used to check the invasion rate of cells after genetic manipulation. The results showed a decrease in beta-catenin expression in cell lines induced by EZH2 silencing. EZH2 silencing significantly reduced the growth and migration rate of esophageal cancer cells. The results indicate the role of EZH2 gene in regulating beta-catenin gene expression in esophageal squamous cell cancer. Considering that tumor spread is one of the most important factors in the malignancy of ESCC cancer, and on the other hand, these features of esophageal cancer cause premature death of patients due to metastasis and invasion, finding an effective marker in controlling cancer stem cells can be promising for the treatment of ESCC patients.

Amyloid fibrils are string-like aggregates that form due to the disruption of natural structure and misfolding of various types of peptides and proteins. These amyloid aggregates are associated with some neurodegenerative and systemic diseases such as Alzheimer's, Parkinson's, and type 2 diabetes. The aim of this study was to investigate the inhibitory effects of Trans-chalcone on insulin fibrillation (as a model protein). In this study, insulin was incubated for 24 hours in the presence and absence of Trans-chalcone under amyloid formation conditions. The formed fibrils were analyzed using various techniques including Congo red absorption spectral changes by spectroscopy, electron microscopy images by TEM, and fluorescent staining of amyloid aggregates by fluorescent microscopy. Then, possible interactions between Trans-chalcone and insulin were analyzed using molecular docking method by AutoDock software. The results showed a significant reduction in amyloid fibril formation in the additive-containing sample compared to the control sample. This study provides evidence that Trans-chalcone has an inhibitory effect on insulin fibrillation and could be a potential therapeutic agent for amyloid-related diseases.

Diabetes affects the reproductive system and causes fertility disorders. Regarding the anti-oxidant and hypoglycemic properties of A. marina, the aim of this study was to determine the effect of total flavonoid contents on Bax, Bcl-2 level, and stress-oxidative stress indices of epididymis sperm in type 1 diabetic rats. In this experimental study, 32 male Wistar rats were divided into control, control diabetic, and two diabetic treated groups. The last two groups received 50 and 100 mg / kg Flavonoids in A. marina leaf for 30 days. At the end of the treatment period, sperms were extracted from the epididymis. Then Bax, Bcl-2, malondialdehyde, superoxide dismutase, glutathione peroxidase, catalase, and HOdG levels in sperm samples also FBS were measured by ELISA method. According to the results, the levels of Bcl-2, superoxide dismutase, glutathione peroxidase and catalase in sperm samples of diabetic rats treated with 50 and 100 mg / kg flavonoid concentrations of A. marina in Comparison with the control group, the diabetic was significantly increased, and the Bax, malondialdehyde and HOdG levels decreased significantly, Depending on the injectable dose (p <0.05). Flavonoid administration of A. marina leaves decreased apoptosis and stress-oxidative stress in spermatozoa of type I diabetic rats.

In order to investigate the effect of consuming diets supplemented with different levels of vitamin E, sesamin and thymoquinone on cellular immune system challenges, intestinal morphology, intestinal microbial population and MUC2 gene expression in laying Japanese quails, 210 female Japanese quails aged 85-35 days with 7 experimental treatments including the control group and those consuming vitamin E, thymoquinone and sesamin at levels of 100 and 200 ml.gram/kg of standard feed was used with 5 repetitions and 6 pieces of laying quail in each repetition. At the end of the period (85 days), after killing two quails from each repetition, the relative weight of thymus, spleen and bursa of fabricius and the liver enzymes activity indices such as albumin, alkaline phosphatase (ALP), alanine transaminase (ALT) and aspartate transaminase (AST) were investigated. Dinitrochlorobenzene sensitization challenge test and response to the injection of mitogen phytohemagglutinin into the left wing web were studied. Sampling was done to evaluate the morphology of the intestinal tissue and the microbial flora population of the small intestine. To investigate the expression of MUC2 gene, samples from jejunum were collected and RT-PCR method was performed. The results showed that the consumption of supplemented diets caused a significant increase in the bursa.f relative weight (p ≤ 0.05) and a non-significant improvement of the liver enzyemes activity (p ≥ 0.05). The significant increase of beneficial microbial flora (Lactobacillus) and decrease of the colony population of (Escherichia coli and Salmonella enterica) bacteria in the intestine along with the increase in the surface of the villi and the density of the number of goblet cells indicated the beneficial effects of the active compounds used in improving the health status of quails (p ≤ 0.05). Consuming supplemented diets with levels of vitamin E, sesamin and thymoquinone caused an increase in MUC2 mRNA expression in the intestine. The results showed the benefits of vitamin E, sesamin and thymoquinone consumption on cell mediated mediated immunity, intestinal morphology, intestinal microbial flora and MUC2 mRNA expression in laying Japanese quails.

Chitosan, made of deacetylated of chitin and the amino polysaccharide, is one of the greatest convenient biopolymers, which has large possibilities to be modified for new features of nano-medicine and being used in biomedical fields. Having responsibility of various features such as cationic nature and controlled drug release, are to the primary amine functional groups in chitosan. There are great properties, such as biocompatibility, biodegradability, loading capacity and an efficient way to avoid undesirable reactions, since the toxicity and side effects of systemic administration are reduced by adjusting Chitosan NPs, they are commonly synthesized as drug carriers. Achieving targeted delivery of drug is due to using peptides, antibodies, aptamer or small molecules. Mentioned methods lower using dosage of adequate drugs. Additionally, they lead the drugs to the targets. Also, the cytotoxicity studies of various nanoparticles and their pharmacokinetic studies have been carried out. The purpose of this review article is to show the importance of the characteristics of antibody-bound, magnetic, pH-sensitive conjugated chitosan nanoparticles in targeted drug delivery and to investigate the effect of these nanoparticles on different types of cancer cells.

Today, the use of nanoparticles in various fields is increasing. Cerium oxide nanoparticles are one of the types of nanoparticles that are widely used in the nanomedicine as an antioxidant. The specific antioxidant property of cerium oxide nanoparticles made us investigate its antioxidant effect on mesenchymal stem cell line derived from adipose tissue. After preparation and passage of mesenchymal stem cells derived from adipose tissue, these cells were tested for oxidative stress with different concentrations of hydrogen peroxide, which was checked by MTT test, treated and the amount of free radical ROS was measured. Then, the cells were treated with different concentrations of cerium oxide which checked by MTT test and the cell survival investigated by Annexin 5-propidium iodide test by flow cytometry to check apoptosis and finally the results were statistically analyzed. became. The greatest effect of hydrogen peroxide oxidative stress was calculated in 24 h at a concentration of 200 μM and the results of MTT were calculated to determine the IC50 of cerium oxide nanoparticles at a concentration of 100 μM/ml in 24 h. The results showed that this nanoparticle is not only non-toxic for these cells, but also increases their proliferation in certain concentrations. The results of the flow cytometry tests and the evaluation of the effects of cerium oxide nanoparticles also showed that these nanoparticles have a good antioxidant capacity and the survival of cells treated with cerium oxide was similar to the group treated with vitamin C. This shows the effective and beneficial effects of cerium oxide nanoparticles and the potential of this compound in cell regeneration and survival. Based on these results, cerium oxide can be an improving factor in cell proliferation and cell therapy.

Anxiety is a common disorder that many people in the society suffer from and is associated with physiological symptoms such as tachycardia, sweating, breathing disorder, feeling numb and sometimes paralysis of limbs, etc. In this study, the anti-anxiety effects of black tea (Camellia sinensis) were evaluated compared to Valerian sisymbriifolium herbal tea in female rats. For this work, 21 female rats weighing 150-200 grams were used. The animals were divided into 3 groups of seven including control, hyacinth recipient and black tea recipient. During the 24 hours before the anxiety test, the experimental groups received valerian tea and black tea with a dose of 0.3%, respectively, and the control group received drinking water instead of herbal tea. Then, the behavior of the mice was evaluated in order to investigate anxiety, motor activity for 5 minutes in an elevated plus-shaped maze. The obtained results were compared using the one-way analysis of variance test. Based on the findings of this study, no significant difference was observed between the anxiety-like behaviors of the black tea group compared to the valerian group. It seems that valerian tea in female rats not only does not have anti-anxiety effects, but also has no superiority over black tea.

In the last two decades, given the importance of biotechnological drugs and their important role in the treatment of chronic wounds, studies have predicted that the market for advanced wound care targeting surgical wounds and chronic wounds is likely to reach $15-22 billion by 2024. Therefore, in the present study, the recent advances in biotechnology in the field of preparing wound dressings from compounds obtained from plants and animals for people with diabetic foot ulcers have been discussed. In this research, the methods and approaches of delivery of therapeutic agents for the treatment of DFUs and in fact the recent results of in vitro and in vivo studies, emphasizing the unique potential of wound dressings based on natural polymers in the treatment of DFUs, have been collected and analyzed. This expansion is expected to be driven by advances in technology, increased incidence of chronic wounds, and an increasing elderly population. A review of the challenges ahead in the treatment of chronic wounds reveals the inadequacy of the effectiveness of some wound care products, suggesting that families and governments must contend with medical challenges for longer periods. Diabetic foot ulcer (DFIU) is a chronic ulcer that can cause severe infections and even amputation. Biomaterials that are currently used as matrices for wound healing can be classified into natural and synthetic types according to their origin. Natural biomaterials such as chitosan, alginate, cellulose, hyaluronic acid, silk fibroin, and collagen have been widely recommended for diabetic foot wound healing due to their easy degradability, remarkable biocompatibility, reduced inflammatory responses, and non-immunogenic nature. Biotechnology guarantees the possibility of using natural biomaterials to develop advanced wound dressings with appropriate and patient-friendly therapeutic results.